Merge remote-tracking branch 'qatar/master'
authorMichael Niedermayer <michaelni@gmx.at>
Sun, 24 Nov 2013 04:21:19 +0000 (05:21 +0100)
committerMichael Niedermayer <michaelni@gmx.at>
Sun, 24 Nov 2013 04:21:19 +0000 (05:21 +0100)
* qatar/master:
  Add missing #includes for *INT64_MAX and *INT64_C

Conflicts:
ffmpeg.c
ffmpeg_filter.c
ffplay.c
libavformat/assdec.c
libavformat/avidec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
37 files changed:
1  2 
cmdutils.c
ffmpeg.c
ffmpeg_filter.c
ffplay.c
libavcodec/aacdec.c
libavcodec/huffman.c
libavcodec/iff.c
libavcodec/mpeg12enc.c
libavcodec/mpegvideo_enc.c
libavcodec/options_table.h
libavcodec/parser.c
libavfilter/af_asyncts.c
libavfilter/src_movie.c
libavfilter/trim.c
libavfilter/vf_fps.c
libavformat/aiffenc.c
libavformat/assdec.c
libavformat/avidec.c
libavformat/ffmdec.c
libavformat/hlsenc.c
libavformat/matroskaenc.c
libavformat/mov.c
libavformat/movenc.c
libavformat/mpegenc.c
libavformat/mxfdec.c
libavformat/nutenc.c
libavformat/oggenc.c
libavformat/rl2.c
libavformat/rpl.c
libavformat/seek.c
libavformat/utils.c
libavformat/wavdec.c
libavformat/xwma.c
libavresample/options.c
libavutil/channel_layout.c
libavutil/common.h
libavutil/cpu.c

diff --cc cmdutils.c
Simple merge
diff --cc ffmpeg.c
index 26cbbe3,0000000..554cde6
mode 100644,000000..100644
--- /dev/null
+++ b/ffmpeg.c
@@@ -1,3543 -1,0 +1,3546 @@@
 +/*
 + * Copyright (c) 2000-2003 Fabrice Bellard
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +/**
 + * @file
 + * multimedia converter based on the FFmpeg libraries
 + */
 +
 +#include "config.h"
 +#include <ctype.h>
 +#include <string.h>
 +#include <math.h>
 +#include <stdlib.h>
 +#include <errno.h>
 +#include <limits.h>
++#include <stdint.h>
++
 +#if HAVE_ISATTY
 +#if HAVE_IO_H
 +#include <io.h>
 +#endif
 +#if HAVE_UNISTD_H
 +#include <unistd.h>
 +#endif
 +#endif
++
 +#include "libavformat/avformat.h"
 +#include "libavdevice/avdevice.h"
 +#include "libswresample/swresample.h"
 +#include "libavutil/opt.h"
 +#include "libavutil/channel_layout.h"
 +#include "libavutil/parseutils.h"
 +#include "libavutil/samplefmt.h"
 +#include "libavutil/fifo.h"
 +#include "libavutil/intreadwrite.h"
 +#include "libavutil/dict.h"
 +#include "libavutil/mathematics.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/avstring.h"
 +#include "libavutil/libm.h"
 +#include "libavutil/imgutils.h"
 +#include "libavutil/timestamp.h"
 +#include "libavutil/bprint.h"
 +#include "libavutil/time.h"
 +#include "libavformat/os_support.h"
 +
 +#include "libavformat/ffm.h" // not public API
 +
 +# include "libavfilter/avcodec.h"
 +# include "libavfilter/avfilter.h"
 +# include "libavfilter/buffersrc.h"
 +# include "libavfilter/buffersink.h"
 +
 +#if HAVE_SYS_RESOURCE_H
 +#include <sys/time.h>
 +#include <sys/types.h>
 +#include <sys/resource.h>
 +#elif HAVE_GETPROCESSTIMES
 +#include <windows.h>
 +#endif
 +#if HAVE_GETPROCESSMEMORYINFO
 +#include <windows.h>
 +#include <psapi.h>
 +#endif
 +
 +#if HAVE_SYS_SELECT_H
 +#include <sys/select.h>
 +#endif
 +
 +#if HAVE_TERMIOS_H
 +#include <fcntl.h>
 +#include <sys/ioctl.h>
 +#include <sys/time.h>
 +#include <termios.h>
 +#elif HAVE_KBHIT
 +#include <conio.h>
 +#endif
 +
 +#if HAVE_PTHREADS
 +#include <pthread.h>
 +#endif
 +
 +#include <time.h>
 +
 +#include "ffmpeg.h"
 +#include "cmdutils.h"
 +
 +#include "libavutil/avassert.h"
 +
 +const char program_name[] = "ffmpeg";
 +const int program_birth_year = 2000;
 +
 +static FILE *vstats_file;
 +
 +const char *const forced_keyframes_const_names[] = {
 +    "n",
 +    "n_forced",
 +    "prev_forced_n",
 +    "prev_forced_t",
 +    "t",
 +    NULL
 +};
 +
 +static void do_video_stats(OutputStream *ost, int frame_size);
 +static int64_t getutime(void);
 +static int64_t getmaxrss(void);
 +
 +static int run_as_daemon  = 0;
 +static int64_t video_size = 0;
 +static int64_t audio_size = 0;
 +static int64_t subtitle_size = 0;
 +static int64_t extra_size = 0;
 +static int nb_frames_dup = 0;
 +static int nb_frames_drop = 0;
 +static int64_t decode_error_stat[2];
 +
 +static int current_time;
 +AVIOContext *progress_avio = NULL;
 +
 +static uint8_t *subtitle_out;
 +
 +#if HAVE_PTHREADS
 +/* signal to input threads that they should exit; set by the main thread */
 +static int transcoding_finished;
 +#endif
 +
 +#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 +
 +InputStream **input_streams = NULL;
 +int        nb_input_streams = 0;
 +InputFile   **input_files   = NULL;
 +int        nb_input_files   = 0;
 +
 +OutputStream **output_streams = NULL;
 +int         nb_output_streams = 0;
 +OutputFile   **output_files   = NULL;
 +int         nb_output_files   = 0;
 +
 +FilterGraph **filtergraphs;
 +int        nb_filtergraphs;
 +
 +#if HAVE_TERMIOS_H
 +
 +/* init terminal so that we can grab keys */
 +static struct termios oldtty;
 +static int restore_tty;
 +#endif
 +
 +static void free_input_threads(void);
 +
 +
 +/* sub2video hack:
 +   Convert subtitles to video with alpha to insert them in filter graphs.
 +   This is a temporary solution until libavfilter gets real subtitles support.
 + */
 +
 +static int sub2video_get_blank_frame(InputStream *ist)
 +{
 +    int ret;
 +    AVFrame *frame = ist->sub2video.frame;
 +
 +    av_frame_unref(frame);
 +    ist->sub2video.frame->width  = ist->sub2video.w;
 +    ist->sub2video.frame->height = ist->sub2video.h;
 +    ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 +    if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 +        return ret;
 +    memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 +    return 0;
 +}
 +
 +static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 +                                AVSubtitleRect *r)
 +{
 +    uint32_t *pal, *dst2;
 +    uint8_t *src, *src2;
 +    int x, y;
 +
 +    if (r->type != SUBTITLE_BITMAP) {
 +        av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 +        return;
 +    }
 +    if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 +        av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 +        return;
 +    }
 +
 +    dst += r->y * dst_linesize + r->x * 4;
 +    src = r->pict.data[0];
 +    pal = (uint32_t *)r->pict.data[1];
 +    for (y = 0; y < r->h; y++) {
 +        dst2 = (uint32_t *)dst;
 +        src2 = src;
 +        for (x = 0; x < r->w; x++)
 +            *(dst2++) = pal[*(src2++)];
 +        dst += dst_linesize;
 +        src += r->pict.linesize[0];
 +    }
 +}
 +
 +static void sub2video_push_ref(InputStream *ist, int64_t pts)
 +{
 +    AVFrame *frame = ist->sub2video.frame;
 +    int i;
 +
 +    av_assert1(frame->data[0]);
 +    ist->sub2video.last_pts = frame->pts = pts;
 +    for (i = 0; i < ist->nb_filters; i++)
 +        av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 +                                     AV_BUFFERSRC_FLAG_KEEP_REF |
 +                                     AV_BUFFERSRC_FLAG_PUSH);
 +}
 +
 +static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 +{
 +    int w = ist->sub2video.w, h = ist->sub2video.h;
 +    AVFrame *frame = ist->sub2video.frame;
 +    int8_t *dst;
 +    int     dst_linesize;
 +    int num_rects, i;
 +    int64_t pts, end_pts;
 +
 +    if (!frame)
 +        return;
 +    if (sub) {
 +        pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 +                                 AV_TIME_BASE_Q, ist->st->time_base);
 +        end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 +                                 AV_TIME_BASE_Q, ist->st->time_base);
 +        num_rects = sub->num_rects;
 +    } else {
 +        pts       = ist->sub2video.end_pts;
 +        end_pts   = INT64_MAX;
 +        num_rects = 0;
 +    }
 +    if (sub2video_get_blank_frame(ist) < 0) {
 +        av_log(ist->st->codec, AV_LOG_ERROR,
 +               "Impossible to get a blank canvas.\n");
 +        return;
 +    }
 +    dst          = frame->data    [0];
 +    dst_linesize = frame->linesize[0];
 +    for (i = 0; i < num_rects; i++)
 +        sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 +    sub2video_push_ref(ist, pts);
 +    ist->sub2video.end_pts = end_pts;
 +}
 +
 +static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 +{
 +    InputFile *infile = input_files[ist->file_index];
 +    int i, j, nb_reqs;
 +    int64_t pts2;
 +
 +    /* When a frame is read from a file, examine all sub2video streams in
 +       the same file and send the sub2video frame again. Otherwise, decoded
 +       video frames could be accumulating in the filter graph while a filter
 +       (possibly overlay) is desperately waiting for a subtitle frame. */
 +    for (i = 0; i < infile->nb_streams; i++) {
 +        InputStream *ist2 = input_streams[infile->ist_index + i];
 +        if (!ist2->sub2video.frame)
 +            continue;
 +        /* subtitles seem to be usually muxed ahead of other streams;
 +           if not, substracting a larger time here is necessary */
 +        pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 +        /* do not send the heartbeat frame if the subtitle is already ahead */
 +        if (pts2 <= ist2->sub2video.last_pts)
 +            continue;
 +        if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 +            sub2video_update(ist2, NULL);
 +        for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 +            nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 +        if (nb_reqs)
 +            sub2video_push_ref(ist2, pts2);
 +    }
 +}
 +
 +static void sub2video_flush(InputStream *ist)
 +{
 +    int i;
 +
 +    for (i = 0; i < ist->nb_filters; i++)
 +        av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 +}
 +
 +/* end of sub2video hack */
 +
 +void term_exit(void)
 +{
 +    av_log(NULL, AV_LOG_QUIET, "%s", "");
 +#if HAVE_TERMIOS_H
 +    if(restore_tty)
 +        tcsetattr (0, TCSANOW, &oldtty);
 +#endif
 +}
 +
 +static volatile int received_sigterm = 0;
 +static volatile int received_nb_signals = 0;
 +
 +static void
 +sigterm_handler(int sig)
 +{
 +    received_sigterm = sig;
 +    received_nb_signals++;
 +    term_exit();
 +    if(received_nb_signals > 3)
 +        exit_program(123);
 +}
 +
 +void term_init(void)
 +{
 +#if HAVE_TERMIOS_H
 +    if(!run_as_daemon){
 +        struct termios tty;
 +        int istty = 1;
 +#if HAVE_ISATTY
 +        istty = isatty(0) && isatty(2);
 +#endif
 +        if (istty && tcgetattr (0, &tty) == 0) {
 +            oldtty = tty;
 +            restore_tty = 1;
 +
 +            tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 +                             |INLCR|IGNCR|ICRNL|IXON);
 +            tty.c_oflag |= OPOST;
 +            tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 +            tty.c_cflag &= ~(CSIZE|PARENB);
 +            tty.c_cflag |= CS8;
 +            tty.c_cc[VMIN] = 1;
 +            tty.c_cc[VTIME] = 0;
 +
 +            tcsetattr (0, TCSANOW, &tty);
 +        }
 +        signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 +    }
 +#endif
 +    avformat_network_deinit();
 +
 +    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 +    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 +#ifdef SIGXCPU
 +    signal(SIGXCPU, sigterm_handler);
 +#endif
 +}
 +
 +/* read a key without blocking */
 +static int read_key(void)
 +{
 +    unsigned char ch;
 +#if HAVE_TERMIOS_H
 +    int n = 1;
 +    struct timeval tv;
 +    fd_set rfds;
 +
 +    FD_ZERO(&rfds);
 +    FD_SET(0, &rfds);
 +    tv.tv_sec = 0;
 +    tv.tv_usec = 0;
 +    n = select(1, &rfds, NULL, NULL, &tv);
 +    if (n > 0) {
 +        n = read(0, &ch, 1);
 +        if (n == 1)
 +            return ch;
 +
 +        return n;
 +    }
 +#elif HAVE_KBHIT
 +#    if HAVE_PEEKNAMEDPIPE
 +    static int is_pipe;
 +    static HANDLE input_handle;
 +    DWORD dw, nchars;
 +    if(!input_handle){
 +        input_handle = GetStdHandle(STD_INPUT_HANDLE);
 +        is_pipe = !GetConsoleMode(input_handle, &dw);
 +    }
 +
 +    if (stdin->_cnt > 0) {
 +        read(0, &ch, 1);
 +        return ch;
 +    }
 +    if (is_pipe) {
 +        /* When running under a GUI, you will end here. */
 +        if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 +            // input pipe may have been closed by the program that ran ffmpeg
 +            return -1;
 +        }
 +        //Read it
 +        if(nchars != 0) {
 +            read(0, &ch, 1);
 +            return ch;
 +        }else{
 +            return -1;
 +        }
 +    }
 +#    endif
 +    if(kbhit())
 +        return(getch());
 +#endif
 +    return -1;
 +}
 +
 +static int decode_interrupt_cb(void *ctx)
 +{
 +    return received_nb_signals > 1;
 +}
 +
 +const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 +
 +static void ffmpeg_cleanup(int ret)
 +{
 +    int i, j;
 +
 +    if (do_benchmark) {
 +        int maxrss = getmaxrss() / 1024;
 +        printf("bench: maxrss=%ikB\n", maxrss);
 +    }
 +
 +    for (i = 0; i < nb_filtergraphs; i++) {
 +        avfilter_graph_free(&filtergraphs[i]->graph);
 +        for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 +            av_freep(&filtergraphs[i]->inputs[j]->name);
 +            av_freep(&filtergraphs[i]->inputs[j]);
 +        }
 +        av_freep(&filtergraphs[i]->inputs);
 +        for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 +            av_freep(&filtergraphs[i]->outputs[j]->name);
 +            av_freep(&filtergraphs[i]->outputs[j]);
 +        }
 +        av_freep(&filtergraphs[i]->outputs);
 +        av_freep(&filtergraphs[i]->graph_desc);
 +        av_freep(&filtergraphs[i]);
 +    }
 +    av_freep(&filtergraphs);
 +
 +    av_freep(&subtitle_out);
 +
 +    /* close files */
 +    for (i = 0; i < nb_output_files; i++) {
 +        AVFormatContext *s = output_files[i]->ctx;
 +        if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 +            avio_close(s->pb);
 +        avformat_free_context(s);
 +        av_dict_free(&output_files[i]->opts);
 +        av_freep(&output_files[i]);
 +    }
 +    for (i = 0; i < nb_output_streams; i++) {
 +        AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 +        while (bsfc) {
 +            AVBitStreamFilterContext *next = bsfc->next;
 +            av_bitstream_filter_close(bsfc);
 +            bsfc = next;
 +        }
 +        output_streams[i]->bitstream_filters = NULL;
 +        avcodec_free_frame(&output_streams[i]->filtered_frame);
 +
 +        av_parser_close(output_streams[i]->parser);
 +
 +        av_freep(&output_streams[i]->forced_keyframes);
 +        av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 +        av_freep(&output_streams[i]->avfilter);
 +        av_freep(&output_streams[i]->logfile_prefix);
 +        av_freep(&output_streams[i]);
 +    }
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +    for (i = 0; i < nb_input_files; i++) {
 +        avformat_close_input(&input_files[i]->ctx);
 +        av_freep(&input_files[i]);
 +    }
 +    for (i = 0; i < nb_input_streams; i++) {
 +        av_frame_free(&input_streams[i]->decoded_frame);
 +        av_frame_free(&input_streams[i]->filter_frame);
 +        av_dict_free(&input_streams[i]->opts);
 +        avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 +        av_frame_free(&input_streams[i]->sub2video.frame);
 +        av_freep(&input_streams[i]->filters);
 +        av_freep(&input_streams[i]->hwaccel_device);
 +        av_freep(&input_streams[i]);
 +    }
 +
 +    if (vstats_file)
 +        fclose(vstats_file);
 +    av_free(vstats_filename);
 +
 +    av_freep(&input_streams);
 +    av_freep(&input_files);
 +    av_freep(&output_streams);
 +    av_freep(&output_files);
 +
 +    uninit_opts();
 +
 +    avformat_network_deinit();
 +
 +    if (received_sigterm) {
 +        av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 +               (int) received_sigterm);
 +    }
 +    term_exit();
 +}
 +
 +void assert_avoptions(AVDictionary *m)
 +{
 +    AVDictionaryEntry *t;
 +    if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 +        exit_program(1);
 +    }
 +}
 +
 +static void abort_codec_experimental(AVCodec *c, int encoder)
 +{
 +    exit_program(1);
 +}
 +
 +static void update_benchmark(const char *fmt, ...)
 +{
 +    if (do_benchmark_all) {
 +        int64_t t = getutime();
 +        va_list va;
 +        char buf[1024];
 +
 +        if (fmt) {
 +            va_start(va, fmt);
 +            vsnprintf(buf, sizeof(buf), fmt, va);
 +            va_end(va);
 +            printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 +        }
 +        current_time = t;
 +    }
 +}
 +
 +static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 +{
 +    AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 +    AVCodecContext          *avctx = ost->st->codec;
 +    int ret;
 +
 +    if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 +        (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 +        pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 +
 +    /*
 +     * Audio encoders may split the packets --  #frames in != #packets out.
 +     * But there is no reordering, so we can limit the number of output packets
 +     * by simply dropping them here.
 +     * Counting encoded video frames needs to be done separately because of
 +     * reordering, see do_video_out()
 +     */
 +    if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 +        if (ost->frame_number >= ost->max_frames) {
 +            av_free_packet(pkt);
 +            return;
 +        }
 +        ost->frame_number++;
 +    }
 +
 +    while (bsfc) {
 +        AVPacket new_pkt = *pkt;
 +        int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 +                                           &new_pkt.data, &new_pkt.size,
 +                                           pkt->data, pkt->size,
 +                                           pkt->flags & AV_PKT_FLAG_KEY);
 +        if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 +            uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
 +            if(t) {
 +                memcpy(t, new_pkt.data, new_pkt.size);
 +                memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 +                new_pkt.data = t;
 +                new_pkt.buf = NULL;
 +                a = 1;
 +            } else
 +                a = AVERROR(ENOMEM);
 +        }
 +        if (a > 0) {
 +            av_free_packet(pkt);
 +            new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 +                                           av_buffer_default_free, NULL, 0);
 +            if (!new_pkt.buf)
 +                exit_program(1);
 +        } else if (a < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 +                   bsfc->filter->name, pkt->stream_index,
 +                   avctx->codec ? avctx->codec->name : "copy");
 +            print_error("", a);
 +            if (exit_on_error)
 +                exit_program(1);
 +        }
 +        *pkt = new_pkt;
 +
 +        bsfc = bsfc->next;
 +    }
 +
 +    if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 +        (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 +        pkt->dts != AV_NOPTS_VALUE &&
 +        ost->last_mux_dts != AV_NOPTS_VALUE) {
 +      int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 +      if (pkt->dts < max) {
 +        int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 +        av_log(s, loglevel, "Non-monotonous DTS in output stream "
 +               "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 +               ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 +        if (exit_on_error) {
 +            av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 +            exit_program(1);
 +        }
 +        av_log(s, loglevel, "changing to %"PRId64". This may result "
 +               "in incorrect timestamps in the output file.\n",
 +               max);
 +        if(pkt->pts >= pkt->dts)
 +            pkt->pts = FFMAX(pkt->pts, max);
 +        pkt->dts = max;
 +      }
 +    }
 +    ost->last_mux_dts = pkt->dts;
 +
 +    pkt->stream_index = ost->index;
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 +                "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 +                av_get_media_type_string(ost->st->codec->codec_type),
 +                av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 +                av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 +                pkt->size
 +              );
 +    }
 +
 +    ret = av_interleaved_write_frame(s, pkt);
 +    if (ret < 0) {
 +        print_error("av_interleaved_write_frame()", ret);
 +        exit_program(1);
 +    }
 +}
 +
 +static void close_output_stream(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +
 +    ost->finished = 1;
 +    if (of->shortest) {
 +        int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 +        of->recording_time = FFMIN(of->recording_time, end);
 +    }
 +}
 +
 +static int check_recording_time(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +
 +    if (of->recording_time != INT64_MAX &&
 +        av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 +                      AV_TIME_BASE_Q) >= 0) {
 +        close_output_stream(ost);
 +        return 0;
 +    }
 +    return 1;
 +}
 +
 +static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 +                         AVFrame *frame)
 +{
 +    AVCodecContext *enc = ost->st->codec;
 +    AVPacket pkt;
 +    int got_packet = 0;
 +
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +
 +    if (!check_recording_time(ost))
 +        return;
 +
 +    if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 +        frame->pts = ost->sync_opts;
 +    ost->sync_opts = frame->pts + frame->nb_samples;
 +
 +    av_assert0(pkt.size || !pkt.data);
 +    update_benchmark(NULL);
 +    if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 +        exit_program(1);
 +    }
 +    update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 +
 +    if (got_packet) {
 +        if (pkt.pts != AV_NOPTS_VALUE)
 +            pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 +        if (pkt.dts != AV_NOPTS_VALUE)
 +            pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 +        if (pkt.duration > 0)
 +            pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 +
 +        if (debug_ts) {
 +            av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 +                   "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 +                   av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 +                   av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 +        }
 +
 +        audio_size += pkt.size;
 +        write_frame(s, &pkt, ost);
 +
 +        av_free_packet(&pkt);
 +    }
 +}
 +
 +static void do_subtitle_out(AVFormatContext *s,
 +                            OutputStream *ost,
 +                            InputStream *ist,
 +                            AVSubtitle *sub)
 +{
 +    int subtitle_out_max_size = 1024 * 1024;
 +    int subtitle_out_size, nb, i;
 +    AVCodecContext *enc;
 +    AVPacket pkt;
 +    int64_t pts;
 +
 +    if (sub->pts == AV_NOPTS_VALUE) {
 +        av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 +        if (exit_on_error)
 +            exit_program(1);
 +        return;
 +    }
 +
 +    enc = ost->st->codec;
 +
 +    if (!subtitle_out) {
 +        subtitle_out = av_malloc(subtitle_out_max_size);
 +    }
 +
 +    /* Note: DVB subtitle need one packet to draw them and one other
 +       packet to clear them */
 +    /* XXX: signal it in the codec context ? */
 +    if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 +        nb = 2;
 +    else
 +        nb = 1;
 +
 +    /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 +    pts = sub->pts;
 +    if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 +        pts -= output_files[ost->file_index]->start_time;
 +    for (i = 0; i < nb; i++) {
 +        ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 +        if (!check_recording_time(ost))
 +            return;
 +
 +        sub->pts = pts;
 +        // start_display_time is required to be 0
 +        sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 +        sub->end_display_time  -= sub->start_display_time;
 +        sub->start_display_time = 0;
 +        if (i == 1)
 +            sub->num_rects = 0;
 +        subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 +                                                    subtitle_out_max_size, sub);
 +        if (subtitle_out_size < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 +            exit_program(1);
 +        }
 +
 +        av_init_packet(&pkt);
 +        pkt.data = subtitle_out;
 +        pkt.size = subtitle_out_size;
 +        pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 +        pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 +        if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 +            /* XXX: the pts correction is handled here. Maybe handling
 +               it in the codec would be better */
 +            if (i == 0)
 +                pkt.pts += 90 * sub->start_display_time;
 +            else
 +                pkt.pts += 90 * sub->end_display_time;
 +        }
 +        subtitle_size += pkt.size;
 +        write_frame(s, &pkt, ost);
 +    }
 +}
 +
 +static void do_video_out(AVFormatContext *s,
 +                         OutputStream *ost,
 +                         AVFrame *in_picture)
 +{
 +    int ret, format_video_sync;
 +    AVPacket pkt;
 +    AVCodecContext *enc = ost->st->codec;
 +    int nb_frames, i;
 +    double sync_ipts, delta;
 +    double duration = 0;
 +    int frame_size = 0;
 +    InputStream *ist = NULL;
 +
 +    if (ost->source_index >= 0)
 +        ist = input_streams[ost->source_index];
 +
 +    if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 +        duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 +
 +    sync_ipts = in_picture->pts;
 +    delta = sync_ipts - ost->sync_opts + duration;
 +
 +    /* by default, we output a single frame */
 +    nb_frames = 1;
 +
 +    format_video_sync = video_sync_method;
 +    if (format_video_sync == VSYNC_AUTO) {
 +        if(!strcmp(s->oformat->name, "avi")) {
 +            format_video_sync = VSYNC_VFR;
 +        } else
 +            format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 +        if (   ist
 +            && format_video_sync == VSYNC_CFR
 +            && input_files[ist->file_index]->ctx->nb_streams == 1
 +            && input_files[ist->file_index]->input_ts_offset == 0) {
 +            format_video_sync = VSYNC_VSCFR;
 +        }
 +    }
 +
 +    switch (format_video_sync) {
 +    case VSYNC_VSCFR:
 +        if (ost->frame_number == 0 && delta - duration >= 0.5) {
 +            av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 +            delta = duration;
 +            ost->sync_opts = lrint(sync_ipts);
 +        }
 +    case VSYNC_CFR:
 +        // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 +        if (delta < -1.1)
 +            nb_frames = 0;
 +        else if (delta > 1.1)
 +            nb_frames = lrintf(delta);
 +        break;
 +    case VSYNC_VFR:
 +        if (delta <= -0.6)
 +            nb_frames = 0;
 +        else if (delta > 0.6)
 +            ost->sync_opts = lrint(sync_ipts);
 +        break;
 +    case VSYNC_DROP:
 +    case VSYNC_PASSTHROUGH:
 +        ost->sync_opts = lrint(sync_ipts);
 +        break;
 +    default:
 +        av_assert0(0);
 +    }
 +
 +    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 +    if (nb_frames == 0) {
 +        nb_frames_drop++;
 +        av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 +        return;
 +    } else if (nb_frames > 1) {
 +        if (nb_frames > dts_error_threshold * 30) {
 +            av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 +            nb_frames_drop++;
 +            return;
 +        }
 +        nb_frames_dup += nb_frames - 1;
 +        av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 +    }
 +
 +  /* duplicates frame if needed */
 +  for (i = 0; i < nb_frames; i++) {
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +
 +    in_picture->pts = ost->sync_opts;
 +
 +#if 1
 +    if (!check_recording_time(ost))
 +#else
 +    if (ost->frame_number >= ost->max_frames)
 +#endif
 +        return;
 +
 +    if (s->oformat->flags & AVFMT_RAWPICTURE &&
 +        enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 +        /* raw pictures are written as AVPicture structure to
 +           avoid any copies. We support temporarily the older
 +           method. */
 +        enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 +        enc->coded_frame->top_field_first  = in_picture->top_field_first;
 +        if (enc->coded_frame->interlaced_frame)
 +            enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 +        else
 +            enc->field_order = AV_FIELD_PROGRESSIVE;
 +        pkt.data   = (uint8_t *)in_picture;
 +        pkt.size   =  sizeof(AVPicture);
 +        pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 +        pkt.flags |= AV_PKT_FLAG_KEY;
 +
 +        video_size += pkt.size;
 +        write_frame(s, &pkt, ost);
 +    } else {
 +        int got_packet, forced_keyframe = 0;
 +        double pts_time;
 +
 +        if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 +            ost->top_field_first >= 0)
 +            in_picture->top_field_first = !!ost->top_field_first;
 +
 +        if (in_picture->interlaced_frame) {
 +            if (enc->codec->id == AV_CODEC_ID_MJPEG)
 +                enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 +            else
 +                enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 +        } else
 +            enc->field_order = AV_FIELD_PROGRESSIVE;
 +
 +        in_picture->quality = ost->st->codec->global_quality;
 +        if (!enc->me_threshold)
 +            in_picture->pict_type = 0;
 +
 +        pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 +            in_picture->pts * av_q2d(enc->time_base) : NAN;
 +        if (ost->forced_kf_index < ost->forced_kf_count &&
 +            in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 +            ost->forced_kf_index++;
 +            forced_keyframe = 1;
 +        } else if (ost->forced_keyframes_pexpr) {
 +            double res;
 +            ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 +            res = av_expr_eval(ost->forced_keyframes_pexpr,
 +                               ost->forced_keyframes_expr_const_values, NULL);
 +            av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 +                    ost->forced_keyframes_expr_const_values[FKF_N],
 +                    ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 +                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 +                    ost->forced_keyframes_expr_const_values[FKF_T],
 +                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 +                    res);
 +            if (res) {
 +                forced_keyframe = 1;
 +                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 +                    ost->forced_keyframes_expr_const_values[FKF_N];
 +                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 +                    ost->forced_keyframes_expr_const_values[FKF_T];
 +                ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 +            }
 +
 +            ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 +        }
 +        if (forced_keyframe) {
 +            in_picture->pict_type = AV_PICTURE_TYPE_I;
 +            av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 +        }
 +
 +        update_benchmark(NULL);
 +        ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 +        update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 +            exit_program(1);
 +        }
 +
 +        if (got_packet) {
 +            if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 +                pkt.pts = ost->sync_opts;
 +
 +            if (pkt.pts != AV_NOPTS_VALUE)
 +                pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 +            if (pkt.dts != AV_NOPTS_VALUE)
 +                pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 +
 +            if (debug_ts) {
 +                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 +                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 +                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 +                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 +            }
 +
 +            frame_size = pkt.size;
 +            video_size += pkt.size;
 +            write_frame(s, &pkt, ost);
 +            av_free_packet(&pkt);
 +
 +            /* if two pass, output log */
 +            if (ost->logfile && enc->stats_out) {
 +                fprintf(ost->logfile, "%s", enc->stats_out);
 +            }
 +        }
 +    }
 +    ost->sync_opts++;
 +    /*
 +     * For video, number of frames in == number of packets out.
 +     * But there may be reordering, so we can't throw away frames on encoder
 +     * flush, we need to limit them here, before they go into encoder.
 +     */
 +    ost->frame_number++;
 +
 +    if (vstats_filename && frame_size)
 +        do_video_stats(ost, frame_size);
 +  }
 +}
 +
 +static double psnr(double d)
 +{
 +    return -10.0 * log(d) / log(10.0);
 +}
 +
 +static void do_video_stats(OutputStream *ost, int frame_size)
 +{
 +    AVCodecContext *enc;
 +    int frame_number;
 +    double ti1, bitrate, avg_bitrate;
 +
 +    /* this is executed just the first time do_video_stats is called */
 +    if (!vstats_file) {
 +        vstats_file = fopen(vstats_filename, "w");
 +        if (!vstats_file) {
 +            perror("fopen");
 +            exit_program(1);
 +        }
 +    }
 +
 +    enc = ost->st->codec;
 +    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        frame_number = ost->st->nb_frames;
 +        fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 +        if (enc->flags&CODEC_FLAG_PSNR)
 +            fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 +
 +        fprintf(vstats_file,"f_size= %6d ", frame_size);
 +        /* compute pts value */
 +        ti1 = ost->st->pts.val * av_q2d(enc->time_base);
 +        if (ti1 < 0.01)
 +            ti1 = 0.01;
 +
 +        bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 +        avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
 +        fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 +               (double)video_size / 1024, ti1, bitrate, avg_bitrate);
 +        fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
 +    }
 +}
 +
 +/**
 + * Get and encode new output from any of the filtergraphs, without causing
 + * activity.
 + *
 + * @return  0 for success, <0 for severe errors
 + */
 +static int reap_filters(void)
 +{
 +    AVFrame *filtered_frame = NULL;
 +    int i;
 +    int64_t frame_pts;
 +
 +    /* Reap all buffers present in the buffer sinks */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        OutputFile    *of = output_files[ost->file_index];
 +        int ret = 0;
 +
 +        if (!ost->filter)
 +            continue;
 +
 +        if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
 +            return AVERROR(ENOMEM);
 +        } else
 +            avcodec_get_frame_defaults(ost->filtered_frame);
 +        filtered_frame = ost->filtered_frame;
 +
 +        while (1) {
 +            ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
 +                                               AV_BUFFERSINK_FLAG_NO_REQUEST);
 +            if (ret < 0) {
 +                if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
 +                }
 +                break;
 +            }
 +            frame_pts = AV_NOPTS_VALUE;
 +            if (filtered_frame->pts != AV_NOPTS_VALUE) {
 +                int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
 +                filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
 +                                                ost->filter->filter->inputs[0]->time_base,
 +                                                ost->st->codec->time_base) -
 +                                    av_rescale_q(start_time,
 +                                                AV_TIME_BASE_Q,
 +                                                ost->st->codec->time_base);
 +            }
 +            //if (ost->source_index >= 0)
 +            //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
 +
 +
 +            switch (ost->filter->filter->inputs[0]->type) {
 +            case AVMEDIA_TYPE_VIDEO:
 +                filtered_frame->pts = frame_pts;
 +                if (!ost->frame_aspect_ratio.num)
 +                    ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
 +
 +                do_video_out(of->ctx, ost, filtered_frame);
 +                break;
 +            case AVMEDIA_TYPE_AUDIO:
 +                filtered_frame->pts = frame_pts;
 +                if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
 +                    ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
 +                    av_log(NULL, AV_LOG_ERROR,
 +                           "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
 +                    break;
 +                }
 +                do_audio_out(of->ctx, ost, filtered_frame);
 +                break;
 +            default:
 +                // TODO support subtitle filters
 +                av_assert0(0);
 +            }
 +
 +            av_frame_unref(filtered_frame);
 +        }
 +    }
 +
 +    return 0;
 +}
 +
 +static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
 +{
 +    char buf[1024];
 +    AVBPrint buf_script;
 +    OutputStream *ost;
 +    AVFormatContext *oc;
 +    int64_t total_size;
 +    AVCodecContext *enc;
 +    int frame_number, vid, i;
 +    double bitrate;
 +    int64_t pts = INT64_MIN;
 +    static int64_t last_time = -1;
 +    static int qp_histogram[52];
 +    int hours, mins, secs, us;
 +
 +    if (!print_stats && !is_last_report && !progress_avio)
 +        return;
 +
 +    if (!is_last_report) {
 +        if (last_time == -1) {
 +            last_time = cur_time;
 +            return;
 +        }
 +        if ((cur_time - last_time) < 500000)
 +            return;
 +        last_time = cur_time;
 +    }
 +
 +
 +    oc = output_files[0]->ctx;
 +
 +    total_size = avio_size(oc->pb);
 +    if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
 +        total_size = avio_tell(oc->pb);
 +
 +    buf[0] = '\0';
 +    vid = 0;
 +    av_bprint_init(&buf_script, 0, 1);
 +    for (i = 0; i < nb_output_streams; i++) {
 +        float q = -1;
 +        ost = output_streams[i];
 +        enc = ost->st->codec;
 +        if (!ost->stream_copy && enc->coded_frame)
 +            q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
 +        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
 +            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
 +                       ost->file_index, ost->index, q);
 +        }
 +        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +            float fps, t = (cur_time-timer_start) / 1000000.0;
 +
 +            frame_number = ost->frame_number;
 +            fps = t > 1 ? frame_number / t : 0;
 +            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
 +                     frame_number, fps < 9.95, fps, q);
 +            av_bprintf(&buf_script, "frame=%d\n", frame_number);
 +            av_bprintf(&buf_script, "fps=%.1f\n", fps);
 +            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
 +                       ost->file_index, ost->index, q);
 +            if (is_last_report)
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
 +            if (qp_hist) {
 +                int j;
 +                int qp = lrintf(q);
 +                if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
 +                    qp_histogram[qp]++;
 +                for (j = 0; j < 32; j++)
 +                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
 +            }
 +            if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
 +                int j;
 +                double error, error_sum = 0;
 +                double scale, scale_sum = 0;
 +                double p;
 +                char type[3] = { 'Y','U','V' };
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
 +                for (j = 0; j < 3; j++) {
 +                    if (is_last_report) {
 +                        error = enc->error[j];
 +                        scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
 +                    } else {
 +                        error = enc->coded_frame->error[j];
 +                        scale = enc->width * enc->height * 255.0 * 255.0;
 +                    }
 +                    if (j)
 +                        scale /= 4;
 +                    error_sum += error;
 +                    scale_sum += scale;
 +                    p = psnr(error / scale);
 +                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
 +                    av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
 +                               ost->file_index, ost->index, type[j] | 32, p);
 +                }
 +                p = psnr(error_sum / scale_sum);
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
 +                av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
 +                           ost->file_index, ost->index, p);
 +            }
 +            vid = 1;
 +        }
 +        /* compute min output value */
 +        if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
 +            pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
 +                                          ost->st->time_base, AV_TIME_BASE_Q));
 +    }
 +
 +    secs = pts / AV_TIME_BASE;
 +    us = pts % AV_TIME_BASE;
 +    mins = secs / 60;
 +    secs %= 60;
 +    hours = mins / 60;
 +    mins %= 60;
 +
 +    bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
 +
 +    if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +                                 "size=N/A time=");
 +    else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +                                 "size=%8.0fkB time=", total_size / 1024.0);
 +    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +             "%02d:%02d:%02d.%02d ", hours, mins, secs,
 +             (100 * us) / AV_TIME_BASE);
 +    if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +                              "bitrate=N/A");
 +    else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +                              "bitrate=%6.1fkbits/s", bitrate);
 +    if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
 +    else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
 +    av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
 +    av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
 +               hours, mins, secs, us);
 +
 +    if (nb_frames_dup || nb_frames_drop)
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
 +                nb_frames_dup, nb_frames_drop);
 +    av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
 +    av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
 +
 +    if (print_stats || is_last_report) {
 +        if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
 +            fprintf(stderr, "%s    \r", buf);
 +        } else
 +            av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
 +
 +    fflush(stderr);
 +    }
 +
 +    if (progress_avio) {
 +        av_bprintf(&buf_script, "progress=%s\n",
 +                   is_last_report ? "end" : "continue");
 +        avio_write(progress_avio, buf_script.str,
 +                   FFMIN(buf_script.len, buf_script.size - 1));
 +        avio_flush(progress_avio);
 +        av_bprint_finalize(&buf_script, NULL);
 +        if (is_last_report) {
 +            avio_close(progress_avio);
 +            progress_avio = NULL;
 +        }
 +    }
 +
 +    if (is_last_report) {
 +        int64_t raw= audio_size + video_size + subtitle_size + extra_size;
 +        av_log(NULL, AV_LOG_INFO, "\n");
 +        av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
 +               video_size / 1024.0,
 +               audio_size / 1024.0,
 +               subtitle_size / 1024.0,
 +               extra_size / 1024.0,
 +               100.0 * (total_size - raw) / raw
 +        );
 +        if(video_size + audio_size + subtitle_size + extra_size == 0){
 +            av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
 +        }
 +    }
 +}
 +
 +static void flush_encoders(void)
 +{
 +    int i, ret;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream   *ost = output_streams[i];
 +        AVCodecContext *enc = ost->st->codec;
 +        AVFormatContext *os = output_files[ost->file_index]->ctx;
 +        int stop_encoding = 0;
 +
 +        if (!ost->encoding_needed)
 +            continue;
 +
 +        if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
 +            continue;
 +        if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
 +            continue;
 +
 +        for (;;) {
 +            int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
 +            const char *desc;
 +            int64_t *size;
 +
 +            switch (ost->st->codec->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                encode = avcodec_encode_audio2;
 +                desc   = "Audio";
 +                size   = &audio_size;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                encode = avcodec_encode_video2;
 +                desc   = "Video";
 +                size   = &video_size;
 +                break;
 +            default:
 +                stop_encoding = 1;
 +            }
 +
 +            if (encode) {
 +                AVPacket pkt;
 +                int got_packet;
 +                av_init_packet(&pkt);
 +                pkt.data = NULL;
 +                pkt.size = 0;
 +
 +                update_benchmark(NULL);
 +                ret = encode(enc, &pkt, NULL, &got_packet);
 +                update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
 +                if (ret < 0) {
 +                    av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
 +                    exit_program(1);
 +                }
 +                *size += pkt.size;
 +                if (ost->logfile && enc->stats_out) {
 +                    fprintf(ost->logfile, "%s", enc->stats_out);
 +                }
 +                if (!got_packet) {
 +                    stop_encoding = 1;
 +                    break;
 +                }
 +                if (pkt.pts != AV_NOPTS_VALUE)
 +                    pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 +                if (pkt.dts != AV_NOPTS_VALUE)
 +                    pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 +                if (pkt.duration > 0)
 +                    pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 +                write_frame(os, &pkt, ost);
 +                if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
 +                    do_video_stats(ost, pkt.size);
 +                }
 +            }
 +
 +            if (stop_encoding)
 +                break;
 +        }
 +    }
 +}
 +
 +/*
 + * Check whether a packet from ist should be written into ost at this time
 + */
 +static int check_output_constraints(InputStream *ist, OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
 +
 +    if (ost->source_index != ist_index)
 +        return 0;
 +
 +    if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
 +        return 0;
 +
 +    return 1;
 +}
 +
 +static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    InputFile   *f = input_files [ist->file_index];
 +    int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
 +    int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
 +    int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
 +    AVPicture pict;
 +    AVPacket opkt;
 +
 +    av_init_packet(&opkt);
 +
 +    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
 +        !ost->copy_initial_nonkeyframes)
 +        return;
 +
 +    if (pkt->pts == AV_NOPTS_VALUE) {
 +        if (!ost->frame_number && ist->pts < start_time &&
 +            !ost->copy_prior_start)
 +            return;
 +    } else {
 +        if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
 +            !ost->copy_prior_start)
 +            return;
 +    }
 +
 +    if (of->recording_time != INT64_MAX &&
 +        ist->pts >= of->recording_time + start_time) {
 +        close_output_stream(ost);
 +        return;
 +    }
 +
 +    if (f->recording_time != INT64_MAX) {
 +        start_time = f->ctx->start_time;
 +        if (f->start_time != AV_NOPTS_VALUE)
 +            start_time += f->start_time;
 +        if (ist->pts >= f->recording_time + start_time) {
 +            close_output_stream(ost);
 +            return;
 +        }
 +    }
 +
 +    /* force the input stream PTS */
 +    if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
 +        audio_size += pkt->size;
 +    else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        video_size += pkt->size;
 +        ost->sync_opts++;
 +    } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
 +        subtitle_size += pkt->size;
 +    }
 +
 +    if (pkt->pts != AV_NOPTS_VALUE)
 +        opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
 +    else
 +        opkt.pts = AV_NOPTS_VALUE;
 +
 +    if (pkt->dts == AV_NOPTS_VALUE)
 +        opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
 +    else
 +        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
 +    opkt.dts -= ost_tb_start_time;
 +
 +    if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
 +        int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
 +        if(!duration)
 +            duration = ist->st->codec->frame_size;
 +        opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
 +                                               (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
 +                                               ost->st->time_base) - ost_tb_start_time;
 +    }
 +
 +    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
 +    opkt.flags    = pkt->flags;
 +
 +    // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
 +    if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
 +       && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
 +       && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
 +       && ost->st->codec->codec_id != AV_CODEC_ID_VC1
 +       ) {
 +        if (av_parser_change(ost->parser, ost->st->codec,
 +                             &opkt.data, &opkt.size,
 +                             pkt->data, pkt->size,
 +                             pkt->flags & AV_PKT_FLAG_KEY)) {
 +            opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
 +            if (!opkt.buf)
 +                exit_program(1);
 +        }
 +    } else {
 +        opkt.data = pkt->data;
 +        opkt.size = pkt->size;
 +    }
 +    av_copy_packet_side_data(&opkt, pkt);
 +
 +    if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
 +        /* store AVPicture in AVPacket, as expected by the output format */
 +        avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
 +        opkt.data = (uint8_t *)&pict;
 +        opkt.size = sizeof(AVPicture);
 +        opkt.flags |= AV_PKT_FLAG_KEY;
 +    }
 +
 +    write_frame(of->ctx, &opkt, ost);
 +    ost->st->codec->frame_number++;
 +}
 +
 +int guess_input_channel_layout(InputStream *ist)
 +{
 +    AVCodecContext *dec = ist->st->codec;
 +
 +    if (!dec->channel_layout) {
 +        char layout_name[256];
 +
 +        if (dec->channels > ist->guess_layout_max)
 +            return 0;
 +        dec->channel_layout = av_get_default_channel_layout(dec->channels);
 +        if (!dec->channel_layout)
 +            return 0;
 +        av_get_channel_layout_string(layout_name, sizeof(layout_name),
 +                                     dec->channels, dec->channel_layout);
 +        av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
 +               "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
 +    }
 +    return 1;
 +}
 +
 +static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVFrame *decoded_frame, *f;
 +    AVCodecContext *avctx = ist->st->codec;
 +    int i, ret, err = 0, resample_changed;
 +    AVRational decoded_frame_tb;
 +
 +    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    decoded_frame = ist->decoded_frame;
 +
 +    update_benchmark(NULL);
 +    ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
 +    update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
 +
 +    if (ret >= 0 && avctx->sample_rate <= 0) {
 +        av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
 +        ret = AVERROR_INVALIDDATA;
 +    }
 +
 +    if (*got_output || ret<0 || pkt->size)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (!*got_output || ret < 0) {
 +        if (!pkt->size) {
 +            for (i = 0; i < ist->nb_filters; i++)
 +#if 1
 +                av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 +#else
 +                av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
 +#endif
 +        }
 +        return ret;
 +    }
 +
 +#if 1
 +    /* increment next_dts to use for the case where the input stream does not
 +       have timestamps or there are multiple frames in the packet */
 +    ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
 +                     avctx->sample_rate;
 +    ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
 +                     avctx->sample_rate;
 +#endif
 +
 +    resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
 +                       ist->resample_channels       != avctx->channels               ||
 +                       ist->resample_channel_layout != decoded_frame->channel_layout ||
 +                       ist->resample_sample_rate    != decoded_frame->sample_rate;
 +    if (resample_changed) {
 +        char layout1[64], layout2[64];
 +
 +        if (!guess_input_channel_layout(ist)) {
 +            av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
 +                   "layout for Input Stream #%d.%d\n", ist->file_index,
 +                   ist->st->index);
 +            exit_program(1);
 +        }
 +        decoded_frame->channel_layout = avctx->channel_layout;
 +
 +        av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
 +                                     ist->resample_channel_layout);
 +        av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
 +                                     decoded_frame->channel_layout);
 +
 +        av_log(NULL, AV_LOG_INFO,
 +               "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
 +               ist->file_index, ist->st->index,
 +               ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
 +               ist->resample_channels, layout1,
 +               decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
 +               avctx->channels, layout2);
 +
 +        ist->resample_sample_fmt     = decoded_frame->format;
 +        ist->resample_sample_rate    = decoded_frame->sample_rate;
 +        ist->resample_channel_layout = decoded_frame->channel_layout;
 +        ist->resample_channels       = avctx->channels;
 +
 +        for (i = 0; i < nb_filtergraphs; i++)
 +            if (ist_in_filtergraph(filtergraphs[i], ist)) {
 +                FilterGraph *fg = filtergraphs[i];
 +                int j;
 +                if (configure_filtergraph(fg) < 0) {
 +                    av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
 +                    exit_program(1);
 +                }
 +                for (j = 0; j < fg->nb_outputs; j++) {
 +                    OutputStream *ost = fg->outputs[j]->ost;
 +                    if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
 +                        !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
 +                        av_buffersink_set_frame_size(ost->filter->filter,
 +                                                     ost->st->codec->frame_size);
 +                }
 +            }
 +    }
 +
 +    /* if the decoder provides a pts, use it instead of the last packet pts.
 +       the decoder could be delaying output by a packet or more. */
 +    if (decoded_frame->pts != AV_NOPTS_VALUE) {
 +        ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
 +        decoded_frame_tb   = avctx->time_base;
 +    } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
 +        decoded_frame->pts = decoded_frame->pkt_pts;
 +        pkt->pts           = AV_NOPTS_VALUE;
 +        decoded_frame_tb   = ist->st->time_base;
 +    } else if (pkt->pts != AV_NOPTS_VALUE) {
 +        decoded_frame->pts = pkt->pts;
 +        pkt->pts           = AV_NOPTS_VALUE;
 +        decoded_frame_tb   = ist->st->time_base;
 +    }else {
 +        decoded_frame->pts = ist->dts;
 +        decoded_frame_tb   = AV_TIME_BASE_Q;
 +    }
 +    if (decoded_frame->pts != AV_NOPTS_VALUE)
 +        decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
 +                                              (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
 +                                              (AVRational){1, ist->st->codec->sample_rate});
 +    for (i = 0; i < ist->nb_filters; i++) {
 +        if (i < ist->nb_filters - 1) {
 +            f = ist->filter_frame;
 +            err = av_frame_ref(f, decoded_frame);
 +            if (err < 0)
 +                break;
 +        } else
 +            f = decoded_frame;
 +        err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
 +                                     AV_BUFFERSRC_FLAG_PUSH);
 +        if (err == AVERROR_EOF)
 +            err = 0; /* ignore */
 +        if (err < 0)
 +            break;
 +    }
 +    decoded_frame->pts = AV_NOPTS_VALUE;
 +
 +    av_frame_unref(ist->filter_frame);
 +    av_frame_unref(decoded_frame);
 +    return err < 0 ? err : ret;
 +}
 +
 +static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVFrame *decoded_frame, *f;
 +    int i, ret = 0, err = 0, resample_changed;
 +    int64_t best_effort_timestamp;
 +    AVRational *frame_sample_aspect;
 +
 +    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
 +        return AVERROR(ENOMEM);
 +    decoded_frame = ist->decoded_frame;
 +    pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
 +
 +    update_benchmark(NULL);
 +    ret = avcodec_decode_video2(ist->st->codec,
 +                                decoded_frame, got_output, pkt);
 +    update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
 +
 +    if (*got_output || ret<0 || pkt->size)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (!*got_output || ret < 0) {
 +        if (!pkt->size) {
 +            for (i = 0; i < ist->nb_filters; i++)
 +#if 1
 +                av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 +#else
 +                av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
 +#endif
 +        }
 +        return ret;
 +    }
 +
 +    if(ist->top_field_first>=0)
 +        decoded_frame->top_field_first = ist->top_field_first;
 +
 +    if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
 +        err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
 +        if (err < 0)
 +            goto fail;
 +    }
 +    ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
 +
 +    best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
 +    if(best_effort_timestamp != AV_NOPTS_VALUE)
 +        ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
 +                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
 +                ist->st->index, av_ts2str(decoded_frame->pts),
 +                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
 +                best_effort_timestamp,
 +                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
 +                decoded_frame->key_frame, decoded_frame->pict_type);
 +    }
 +
 +    pkt->size = 0;
 +
 +    if (ist->st->sample_aspect_ratio.num)
 +        decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
 +
 +    resample_changed = ist->resample_width   != decoded_frame->width  ||
 +                       ist->resample_height  != decoded_frame->height ||
 +                       ist->resample_pix_fmt != decoded_frame->format;
 +    if (resample_changed) {
 +        av_log(NULL, AV_LOG_INFO,
 +               "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
 +               ist->file_index, ist->st->index,
 +               ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
 +               decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
 +
 +        ist->resample_width   = decoded_frame->width;
 +        ist->resample_height  = decoded_frame->height;
 +        ist->resample_pix_fmt = decoded_frame->format;
 +
 +        for (i = 0; i < nb_filtergraphs; i++) {
 +            if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
 +                configure_filtergraph(filtergraphs[i]) < 0) {
 +                av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
 +                exit_program(1);
 +            }
 +        }
 +    }
 +
 +    frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
 +    for (i = 0; i < ist->nb_filters; i++) {
 +        if (!frame_sample_aspect->num)
 +            *frame_sample_aspect = ist->st->sample_aspect_ratio;
 +
 +        if (i < ist->nb_filters - 1) {
 +            f = ist->filter_frame;
 +            err = av_frame_ref(f, decoded_frame);
 +            if (err < 0)
 +                break;
 +        } else
 +            f = decoded_frame;
 +        ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
 +        if (ret == AVERROR_EOF) {
 +            ret = 0; /* ignore */
 +        } else if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL,
 +                   "Failed to inject frame into filter network: %s\n", av_err2str(ret));
 +            exit_program(1);
 +        }
 +    }
 +
 +fail:
 +    av_frame_unref(ist->filter_frame);
 +    av_frame_unref(decoded_frame);
 +    return err < 0 ? err : ret;
 +}
 +
 +static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVSubtitle subtitle;
 +    int i, ret = avcodec_decode_subtitle2(ist->st->codec,
 +                                          &subtitle, got_output, pkt);
 +
 +    if (*got_output || ret<0 || pkt->size)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (ret < 0 || !*got_output) {
 +        if (!pkt->size)
 +            sub2video_flush(ist);
 +        return ret;
 +    }
 +
 +    if (ist->fix_sub_duration) {
 +        if (ist->prev_sub.got_output) {
 +            int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
 +                                 1000, AV_TIME_BASE);
 +            if (end < ist->prev_sub.subtitle.end_display_time) {
 +                av_log(ist->st->codec, AV_LOG_DEBUG,
 +                       "Subtitle duration reduced from %d to %d\n",
 +                       ist->prev_sub.subtitle.end_display_time, end);
 +                ist->prev_sub.subtitle.end_display_time = end;
 +            }
 +        }
 +        FFSWAP(int,        *got_output, ist->prev_sub.got_output);
 +        FFSWAP(int,        ret,         ist->prev_sub.ret);
 +        FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
 +    }
 +
 +    sub2video_update(ist, &subtitle);
 +
 +    if (!*got_output || !subtitle.num_rects)
 +        return ret;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +
 +        if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
 +            continue;
 +
 +        do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
 +    }
 +
 +    avsubtitle_free(&subtitle);
 +    return ret;
 +}
 +
 +/* pkt = NULL means EOF (needed to flush decoder buffers) */
 +static int output_packet(InputStream *ist, const AVPacket *pkt)
 +{
 +    int ret = 0, i;
 +    int got_output = 0;
 +
 +    AVPacket avpkt;
 +    if (!ist->saw_first_ts) {
 +        ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
 +        ist->pts = 0;
 +        if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
 +            ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
 +            ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
 +        }
 +        ist->saw_first_ts = 1;
 +    }
 +
 +    if (ist->next_dts == AV_NOPTS_VALUE)
 +        ist->next_dts = ist->dts;
 +    if (ist->next_pts == AV_NOPTS_VALUE)
 +        ist->next_pts = ist->pts;
 +
 +    if (pkt == NULL) {
 +        /* EOF handling */
 +        av_init_packet(&avpkt);
 +        avpkt.data = NULL;
 +        avpkt.size = 0;
 +        goto handle_eof;
 +    } else {
 +        avpkt = *pkt;
 +    }
 +
 +    if (pkt->dts != AV_NOPTS_VALUE) {
 +        ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
 +        if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
 +            ist->next_pts = ist->pts = ist->dts;
 +    }
 +
 +    // while we have more to decode or while the decoder did output something on EOF
 +    while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
 +        int duration;
 +    handle_eof:
 +
 +        ist->pts = ist->next_pts;
 +        ist->dts = ist->next_dts;
 +
 +        if (avpkt.size && avpkt.size != pkt->size) {
 +            av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
 +                   "Multiple frames in a packet from stream %d\n", pkt->stream_index);
 +            ist->showed_multi_packet_warning = 1;
 +        }
 +
 +        switch (ist->st->codec->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            ret = decode_audio    (ist, &avpkt, &got_output);
 +            break;
 +        case AVMEDIA_TYPE_VIDEO:
 +            ret = decode_video    (ist, &avpkt, &got_output);
 +            if (avpkt.duration) {
 +                duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
 +            } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
 +                int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
 +                duration = ((int64_t)AV_TIME_BASE *
 +                                ist->st->codec->time_base.num * ticks) /
 +                                ist->st->codec->time_base.den;
 +            } else
 +                duration = 0;
 +
 +            if(ist->dts != AV_NOPTS_VALUE && duration) {
 +                ist->next_dts += duration;
 +            }else
 +                ist->next_dts = AV_NOPTS_VALUE;
 +
 +            if (got_output)
 +                ist->next_pts += duration; //FIXME the duration is not correct in some cases
 +            break;
 +        case AVMEDIA_TYPE_SUBTITLE:
 +            ret = transcode_subtitles(ist, &avpkt, &got_output);
 +            break;
 +        default:
 +            return -1;
 +        }
 +
 +        if (ret < 0)
 +            return ret;
 +
 +        avpkt.dts=
 +        avpkt.pts= AV_NOPTS_VALUE;
 +
 +        // touch data and size only if not EOF
 +        if (pkt) {
 +            if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
 +                ret = avpkt.size;
 +            avpkt.data += ret;
 +            avpkt.size -= ret;
 +        }
 +        if (!got_output) {
 +            continue;
 +        }
 +    }
 +
 +    /* handle stream copy */
 +    if (!ist->decoding_needed) {
 +        ist->dts = ist->next_dts;
 +        switch (ist->st->codec->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
 +                             ist->st->codec->sample_rate;
 +            break;
 +        case AVMEDIA_TYPE_VIDEO:
 +            if (ist->framerate.num) {
 +                // TODO: Remove work-around for c99-to-c89 issue 7
 +                AVRational time_base_q = AV_TIME_BASE_Q;
 +                int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
 +                ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
 +            } else if (pkt->duration) {
 +                ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
 +            } else if(ist->st->codec->time_base.num != 0) {
 +                int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
 +                ist->next_dts += ((int64_t)AV_TIME_BASE *
 +                                  ist->st->codec->time_base.num * ticks) /
 +                                  ist->st->codec->time_base.den;
 +            }
 +            break;
 +        }
 +        ist->pts = ist->dts;
 +        ist->next_pts = ist->next_dts;
 +    }
 +    for (i = 0; pkt && i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +
 +        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
 +            continue;
 +
 +        do_streamcopy(ist, ost, pkt);
 +    }
 +
 +    return 0;
 +}
 +
 +static void print_sdp(void)
 +{
 +    char sdp[16384];
 +    int i;
 +    AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
 +
 +    if (!avc)
 +        exit_program(1);
 +    for (i = 0; i < nb_output_files; i++)
 +        avc[i] = output_files[i]->ctx;
 +
 +    av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
 +    printf("SDP:\n%s\n", sdp);
 +    fflush(stdout);
 +    av_freep(&avc);
 +}
 +
 +static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
 +{
 +    int i;
 +    for (i = 0; hwaccels[i].name; i++)
 +        if (hwaccels[i].pix_fmt == pix_fmt)
 +            return &hwaccels[i];
 +    return NULL;
 +}
 +
 +static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
 +{
 +    InputStream *ist = s->opaque;
 +    const enum AVPixelFormat *p;
 +    int ret;
 +
 +    for (p = pix_fmts; *p != -1; p++) {
 +        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
 +        const HWAccel *hwaccel;
 +
 +        if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
 +            break;
 +
 +        hwaccel = get_hwaccel(*p);
 +        if (!hwaccel ||
 +            (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
 +            (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
 +            continue;
 +
 +        ret = hwaccel->init(s);
 +        if (ret < 0) {
 +            if (ist->hwaccel_id == hwaccel->id) {
 +                av_log(NULL, AV_LOG_FATAL,
 +                       "%s hwaccel requested for input stream #%d:%d, "
 +                       "but cannot be initialized.\n", hwaccel->name,
 +                       ist->file_index, ist->st->index);
 +                exit_program(1);
 +            }
 +            continue;
 +        }
 +        ist->active_hwaccel_id = hwaccel->id;
 +        ist->hwaccel_pix_fmt   = *p;
 +        break;
 +    }
 +
 +    return *p;
 +}
 +
 +static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
 +{
 +    InputStream *ist = s->opaque;
 +
 +    if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
 +        return ist->hwaccel_get_buffer(s, frame, flags);
 +
 +    return avcodec_default_get_buffer2(s, frame, flags);
 +}
 +
 +static int init_input_stream(int ist_index, char *error, int error_len)
 +{
 +    int ret;
 +    InputStream *ist = input_streams[ist_index];
 +
 +    if (ist->decoding_needed) {
 +        AVCodec *codec = ist->dec;
 +        if (!codec) {
 +            snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
 +                    avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
 +            return AVERROR(EINVAL);
 +        }
 +
 +        ist->st->codec->opaque      = ist;
 +        ist->st->codec->get_format  = get_format;
 +        ist->st->codec->get_buffer2 = get_buffer;
 +        ist->st->codec->thread_safe_callbacks = 1;
 +
 +        av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
 +
 +        if (!av_dict_get(ist->opts, "threads", NULL, 0))
 +            av_dict_set(&ist->opts, "threads", "auto", 0);
 +        if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
 +            char errbuf[128];
 +            if (ret == AVERROR_EXPERIMENTAL)
 +                abort_codec_experimental(codec, 0);
 +
 +            av_strerror(ret, errbuf, sizeof(errbuf));
 +
 +            snprintf(error, error_len,
 +                     "Error while opening decoder for input stream "
 +                     "#%d:%d : %s",
 +                     ist->file_index, ist->st->index, errbuf);
 +            return ret;
 +        }
 +        assert_avoptions(ist->opts);
 +    }
 +
 +    ist->next_pts = AV_NOPTS_VALUE;
 +    ist->next_dts = AV_NOPTS_VALUE;
 +    ist->is_start = 1;
 +
 +    return 0;
 +}
 +
 +static InputStream *get_input_stream(OutputStream *ost)
 +{
 +    if (ost->source_index >= 0)
 +        return input_streams[ost->source_index];
 +    return NULL;
 +}
 +
 +static int compare_int64(const void *a, const void *b)
 +{
 +    int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
 +    return va < vb ? -1 : va > vb ? +1 : 0;
 +}
 +
 +static void parse_forced_key_frames(char *kf, OutputStream *ost,
 +                                    AVCodecContext *avctx)
 +{
 +    char *p;
 +    int n = 1, i, size, index = 0;
 +    int64_t t, *pts;
 +
 +    for (p = kf; *p; p++)
 +        if (*p == ',')
 +            n++;
 +    size = n;
 +    pts = av_malloc(sizeof(*pts) * size);
 +    if (!pts) {
 +        av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
 +        exit_program(1);
 +    }
 +
 +    p = kf;
 +    for (i = 0; i < n; i++) {
 +        char *next = strchr(p, ',');
 +
 +        if (next)
 +            *next++ = 0;
 +
 +        if (!memcmp(p, "chapters", 8)) {
 +
 +            AVFormatContext *avf = output_files[ost->file_index]->ctx;
 +            int j;
 +
 +            if (avf->nb_chapters > INT_MAX - size ||
 +                !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
 +                                     sizeof(*pts)))) {
 +                av_log(NULL, AV_LOG_FATAL,
 +                       "Could not allocate forced key frames array.\n");
 +                exit_program(1);
 +            }
 +            t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
 +            t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
 +
 +            for (j = 0; j < avf->nb_chapters; j++) {
 +                AVChapter *c = avf->chapters[j];
 +                av_assert1(index < size);
 +                pts[index++] = av_rescale_q(c->start, c->time_base,
 +                                            avctx->time_base) + t;
 +            }
 +
 +        } else {
 +
 +            t = parse_time_or_die("force_key_frames", p, 1);
 +            av_assert1(index < size);
 +            pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
 +
 +        }
 +
 +        p = next;
 +    }
 +
 +    av_assert0(index == size);
 +    qsort(pts, size, sizeof(*pts), compare_int64);
 +    ost->forced_kf_count = size;
 +    ost->forced_kf_pts   = pts;
 +}
 +
 +static void report_new_stream(int input_index, AVPacket *pkt)
 +{
 +    InputFile *file = input_files[input_index];
 +    AVStream *st = file->ctx->streams[pkt->stream_index];
 +
 +    if (pkt->stream_index < file->nb_streams_warn)
 +        return;
 +    av_log(file->ctx, AV_LOG_WARNING,
 +           "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
 +           av_get_media_type_string(st->codec->codec_type),
 +           input_index, pkt->stream_index,
 +           pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
 +    file->nb_streams_warn = pkt->stream_index + 1;
 +}
 +
 +static int transcode_init(void)
 +{
 +    int ret = 0, i, j, k;
 +    AVFormatContext *oc;
 +    AVCodecContext *codec;
 +    OutputStream *ost;
 +    InputStream *ist;
 +    char error[1024];
 +    int want_sdp = 1;
 +
 +    for (i = 0; i < nb_filtergraphs; i++) {
 +        FilterGraph *fg = filtergraphs[i];
 +        for (j = 0; j < fg->nb_outputs; j++) {
 +            OutputFilter *ofilter = fg->outputs[j];
 +            if (!ofilter->ost || ofilter->ost->source_index >= 0)
 +                continue;
 +            if (fg->nb_inputs != 1)
 +                continue;
 +            for (k = nb_input_streams-1; k >= 0 ; k--)
 +                if (fg->inputs[0]->ist == input_streams[k])
 +                    break;
 +            ofilter->ost->source_index = k;
 +        }
 +    }
 +
 +    /* init framerate emulation */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *ifile = input_files[i];
 +        if (ifile->rate_emu)
 +            for (j = 0; j < ifile->nb_streams; j++)
 +                input_streams[j + ifile->ist_index]->start = av_gettime();
 +    }
 +
 +    /* output stream init */
 +    for (i = 0; i < nb_output_files; i++) {
 +        oc = output_files[i]->ctx;
 +        if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
 +            av_dump_format(oc, i, oc->filename, 1);
 +            av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
 +            return AVERROR(EINVAL);
 +        }
 +    }
 +
 +    /* init complex filtergraphs */
 +    for (i = 0; i < nb_filtergraphs; i++)
 +        if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
 +            return ret;
 +
 +    /* for each output stream, we compute the right encoding parameters */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        AVCodecContext *icodec = NULL;
 +        ost = output_streams[i];
 +        oc  = output_files[ost->file_index]->ctx;
 +        ist = get_input_stream(ost);
 +
 +        if (ost->attachment_filename)
 +            continue;
 +
 +        codec  = ost->st->codec;
 +
 +        if (ist) {
 +            icodec = ist->st->codec;
 +
 +            ost->st->disposition          = ist->st->disposition;
 +            codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
 +            codec->chroma_sample_location = icodec->chroma_sample_location;
 +        } else {
 +            for (j=0; j<oc->nb_streams; j++) {
 +                AVStream *st = oc->streams[j];
 +                if (st != ost->st && st->codec->codec_type == codec->codec_type)
 +                    break;
 +            }
 +            if (j == oc->nb_streams)
 +                if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
 +                    ost->st->disposition = AV_DISPOSITION_DEFAULT;
 +        }
 +
 +        if (ost->stream_copy) {
 +            AVRational sar;
 +            uint64_t extra_size;
 +
 +            av_assert0(ist && !ost->filter);
 +
 +            extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
 +
 +            if (extra_size > INT_MAX) {
 +                return AVERROR(EINVAL);
 +            }
 +
 +            /* if stream_copy is selected, no need to decode or encode */
 +            codec->codec_id   = icodec->codec_id;
 +            codec->codec_type = icodec->codec_type;
 +
 +            if (!codec->codec_tag) {
 +                unsigned int codec_tag;
 +                if (!oc->oformat->codec_tag ||
 +                     av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
 +                     !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
 +                    codec->codec_tag = icodec->codec_tag;
 +            }
 +
 +            codec->bit_rate       = icodec->bit_rate;
 +            codec->rc_max_rate    = icodec->rc_max_rate;
 +            codec->rc_buffer_size = icodec->rc_buffer_size;
 +            codec->field_order    = icodec->field_order;
 +            codec->extradata      = av_mallocz(extra_size);
 +            if (!codec->extradata) {
 +                return AVERROR(ENOMEM);
 +            }
 +            memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
 +            codec->extradata_size= icodec->extradata_size;
 +            codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
 +
 +            codec->time_base = ist->st->time_base;
 +            /*
 +             * Avi is a special case here because it supports variable fps but
 +             * having the fps and timebase differe significantly adds quite some
 +             * overhead
 +             */
 +            if(!strcmp(oc->oformat->name, "avi")) {
 +                if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
 +                               && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
 +                               && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
 +                               && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
 +                     || copy_tb==2){
 +                    codec->time_base.num = ist->st->r_frame_rate.den;
 +                    codec->time_base.den = 2*ist->st->r_frame_rate.num;
 +                    codec->ticks_per_frame = 2;
 +                } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
 +                                 && av_q2d(ist->st->time_base) < 1.0/500
 +                    || copy_tb==0){
 +                    codec->time_base = icodec->time_base;
 +                    codec->time_base.num *= icodec->ticks_per_frame;
 +                    codec->time_base.den *= 2;
 +                    codec->ticks_per_frame = 2;
 +                }
 +            } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
 +                      && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
 +                      && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
 +                      && strcmp(oc->oformat->name, "f4v")
 +            ) {
 +                if(   copy_tb<0 && icodec->time_base.den
 +                                && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
 +                                && av_q2d(ist->st->time_base) < 1.0/500
 +                   || copy_tb==0){
 +                    codec->time_base = icodec->time_base;
 +                    codec->time_base.num *= icodec->ticks_per_frame;
 +                }
 +            }
 +            if (   codec->codec_tag == AV_RL32("tmcd")
 +                && icodec->time_base.num < icodec->time_base.den
 +                && icodec->time_base.num > 0
 +                && 121LL*icodec->time_base.num > icodec->time_base.den) {
 +                codec->time_base = icodec->time_base;
 +            }
 +
 +            if (ist && !ost->frame_rate.num)
 +                ost->frame_rate = ist->framerate;
 +            if(ost->frame_rate.num)
 +                codec->time_base = av_inv_q(ost->frame_rate);
 +
 +            av_reduce(&codec->time_base.num, &codec->time_base.den,
 +                        codec->time_base.num, codec->time_base.den, INT_MAX);
 +
 +            ost->parser = av_parser_init(codec->codec_id);
 +
 +            switch (codec->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                if (audio_volume != 256) {
 +                    av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
 +                    exit_program(1);
 +                }
 +                codec->channel_layout     = icodec->channel_layout;
 +                codec->sample_rate        = icodec->sample_rate;
 +                codec->channels           = icodec->channels;
 +                codec->frame_size         = icodec->frame_size;
 +                codec->audio_service_type = icodec->audio_service_type;
 +                codec->block_align        = icodec->block_align;
 +                if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
 +                    codec->block_align= 0;
 +                if(codec->codec_id == AV_CODEC_ID_AC3)
 +                    codec->block_align= 0;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                codec->pix_fmt            = icodec->pix_fmt;
 +                codec->width              = icodec->width;
 +                codec->height             = icodec->height;
 +                codec->has_b_frames       = icodec->has_b_frames;
 +                if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
 +                    sar =
 +                        av_mul_q(ost->frame_aspect_ratio,
 +                                 (AVRational){ codec->height, codec->width });
 +                    av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
 +                           "with stream copy may produce invalid files\n");
 +                }
 +                else if (ist->st->sample_aspect_ratio.num)
 +                    sar = ist->st->sample_aspect_ratio;
 +                else
 +                    sar = icodec->sample_aspect_ratio;
 +                ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
 +                ost->st->avg_frame_rate = ist->st->avg_frame_rate;
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                codec->width  = icodec->width;
 +                codec->height = icodec->height;
 +                break;
 +            case AVMEDIA_TYPE_DATA:
 +            case AVMEDIA_TYPE_ATTACHMENT:
 +                break;
 +            default:
 +                abort();
 +            }
 +        } else {
 +            if (!ost->enc)
 +                ost->enc = avcodec_find_encoder(codec->codec_id);
 +            if (!ost->enc) {
 +                /* should only happen when a default codec is not present. */
 +                snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
 +                         avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
 +                ret = AVERROR(EINVAL);
 +                goto dump_format;
 +            }
 +
 +            if (ist)
 +                ist->decoding_needed++;
 +            ost->encoding_needed = 1;
 +
 +            if (!ost->filter &&
 +                (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
 +                 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
 +                    FilterGraph *fg;
 +                    fg = init_simple_filtergraph(ist, ost);
 +                    if (configure_filtergraph(fg)) {
 +                        av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
 +                        exit_program(1);
 +                    }
 +            }
 +
 +            if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 +                if (ost->filter && !ost->frame_rate.num)
 +                    ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
 +                if (ist && !ost->frame_rate.num)
 +                    ost->frame_rate = ist->framerate;
 +                if (ist && !ost->frame_rate.num)
 +                    ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
 +//                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
 +                if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
 +                    int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
 +                    ost->frame_rate = ost->enc->supported_framerates[idx];
 +                }
 +            }
 +
 +            switch (codec->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
 +                codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
 +                codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
 +                codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
 +                codec->time_base      = (AVRational){ 1, codec->sample_rate };
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                codec->time_base = av_inv_q(ost->frame_rate);
 +                if (ost->filter && !(codec->time_base.num && codec->time_base.den))
 +                    codec->time_base = ost->filter->filter->inputs[0]->time_base;
 +                if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
 +                   && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
 +                    av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
 +                                               "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
 +                }
 +                for (j = 0; j < ost->forced_kf_count; j++)
 +                    ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
 +                                                         AV_TIME_BASE_Q,
 +                                                         codec->time_base);
 +
 +                codec->width  = ost->filter->filter->inputs[0]->w;
 +                codec->height = ost->filter->filter->inputs[0]->h;
 +                codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
 +                    ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
 +                    av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
 +                    ost->filter->filter->inputs[0]->sample_aspect_ratio;
 +                if (!strncmp(ost->enc->name, "libx264", 7) &&
 +                    codec->pix_fmt == AV_PIX_FMT_NONE &&
 +                    ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "No pixel format specified, %s for H.264 encoding chosen.\n"
 +                           "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
 +                           av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
 +                if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
 +                    codec->pix_fmt == AV_PIX_FMT_NONE &&
 +                    ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
 +                           "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
 +                           av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
 +                codec->pix_fmt = ost->filter->filter->inputs[0]->format;
 +
 +                if (!icodec ||
 +                    codec->width   != icodec->width  ||
 +                    codec->height  != icodec->height ||
 +                    codec->pix_fmt != icodec->pix_fmt) {
 +                    codec->bits_per_raw_sample = frame_bits_per_raw_sample;
 +                }
 +
 +                if (ost->forced_keyframes) {
 +                    if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
 +                        ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
 +                                            forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
 +                        if (ret < 0) {
 +                            av_log(NULL, AV_LOG_ERROR,
 +                                   "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
 +                            return ret;
 +                        }
 +                        ost->forced_keyframes_expr_const_values[FKF_N] = 0;
 +                        ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
 +                        ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
 +                        ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
 +                    } else {
 +                        parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
 +                    }
 +                }
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                codec->time_base = (AVRational){1, 1000};
 +                if (!codec->width) {
 +                    codec->width     = input_streams[ost->source_index]->st->codec->width;
 +                    codec->height    = input_streams[ost->source_index]->st->codec->height;
 +                }
 +                break;
 +            default:
 +                abort();
 +                break;
 +            }
 +            /* two pass mode */
 +            if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
 +                char logfilename[1024];
 +                FILE *f;
 +
 +                snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
 +                         ost->logfile_prefix ? ost->logfile_prefix :
 +                                               DEFAULT_PASS_LOGFILENAME_PREFIX,
 +                         i);
 +                if (!strcmp(ost->enc->name, "libx264")) {
 +                    av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
 +                } else {
 +                    if (codec->flags & CODEC_FLAG_PASS2) {
 +                        char  *logbuffer;
 +                        size_t logbuffer_size;
 +                        if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
 +                            av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
 +                                   logfilename);
 +                            exit_program(1);
 +                        }
 +                        codec->stats_in = logbuffer;
 +                    }
 +                    if (codec->flags & CODEC_FLAG_PASS1) {
 +                        f = av_fopen_utf8(logfilename, "wb");
 +                        if (!f) {
 +                            av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
 +                                logfilename, strerror(errno));
 +                            exit_program(1);
 +                        }
 +                        ost->logfile = f;
 +                    }
 +                }
 +            }
 +        }
 +    }
 +
 +    /* open each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +        if (ost->encoding_needed) {
 +            AVCodec      *codec = ost->enc;
 +            AVCodecContext *dec = NULL;
 +
 +            if ((ist = get_input_stream(ost)))
 +                dec = ist->st->codec;
 +            if (dec && dec->subtitle_header) {
 +                /* ASS code assumes this buffer is null terminated so add extra byte. */
 +                ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
 +                if (!ost->st->codec->subtitle_header) {
 +                    ret = AVERROR(ENOMEM);
 +                    goto dump_format;
 +                }
 +                memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
 +                ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
 +            }
 +            if (!av_dict_get(ost->opts, "threads", NULL, 0))
 +                av_dict_set(&ost->opts, "threads", "auto", 0);
 +            if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
 +                if (ret == AVERROR_EXPERIMENTAL)
 +                    abort_codec_experimental(codec, 1);
 +                snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
 +                        ost->file_index, ost->index);
 +                goto dump_format;
 +            }
 +            if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
 +                !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
 +                av_buffersink_set_frame_size(ost->filter->filter,
 +                                             ost->st->codec->frame_size);
 +            assert_avoptions(ost->opts);
 +            if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
 +                av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
 +                                             " It takes bits/s as argument, not kbits/s\n");
 +            extra_size += ost->st->codec->extradata_size;
 +        } else {
 +            av_opt_set_dict(ost->st->codec, &ost->opts);
 +        }
 +    }
 +
 +    /* init input streams */
 +    for (i = 0; i < nb_input_streams; i++)
 +        if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
 +            for (i = 0; i < nb_output_streams; i++) {
 +                ost = output_streams[i];
 +                avcodec_close(ost->st->codec);
 +            }
 +            goto dump_format;
 +        }
 +
 +    /* discard unused programs */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *ifile = input_files[i];
 +        for (j = 0; j < ifile->ctx->nb_programs; j++) {
 +            AVProgram *p = ifile->ctx->programs[j];
 +            int discard  = AVDISCARD_ALL;
 +
 +            for (k = 0; k < p->nb_stream_indexes; k++)
 +                if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
 +                    discard = AVDISCARD_DEFAULT;
 +                    break;
 +                }
 +            p->discard = discard;
 +        }
 +    }
 +
 +    /* open files and write file headers */
 +    for (i = 0; i < nb_output_files; i++) {
 +        oc = output_files[i]->ctx;
 +        oc->interrupt_callback = int_cb;
 +        if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
 +            char errbuf[128];
 +            av_strerror(ret, errbuf, sizeof(errbuf));
 +            snprintf(error, sizeof(error),
 +                     "Could not write header for output file #%d "
 +                     "(incorrect codec parameters ?): %s",
 +                     i, errbuf);
 +            ret = AVERROR(EINVAL);
 +            goto dump_format;
 +        }
 +//         assert_avoptions(output_files[i]->opts);
 +        if (strcmp(oc->oformat->name, "rtp")) {
 +            want_sdp = 0;
 +        }
 +    }
 +
 + dump_format:
 +    /* dump the file output parameters - cannot be done before in case
 +       of stream copy */
 +    for (i = 0; i < nb_output_files; i++) {
 +        av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
 +    }
 +
 +    /* dump the stream mapping */
 +    av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +
 +        for (j = 0; j < ist->nb_filters; j++) {
 +            if (ist->filters[j]->graph->graph_desc) {
 +                av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
 +                       ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
 +                       ist->filters[j]->name);
 +                if (nb_filtergraphs > 1)
 +                    av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
 +                av_log(NULL, AV_LOG_INFO, "\n");
 +            }
 +        }
 +    }
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +
 +        if (ost->attachment_filename) {
 +            /* an attached file */
 +            av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
 +                   ost->attachment_filename, ost->file_index, ost->index);
 +            continue;
 +        }
 +
 +        if (ost->filter && ost->filter->graph->graph_desc) {
 +            /* output from a complex graph */
 +            av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
 +            if (nb_filtergraphs > 1)
 +                av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
 +
 +            av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
 +                   ost->index, ost->enc ? ost->enc->name : "?");
 +            continue;
 +        }
 +
 +        av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
 +               input_streams[ost->source_index]->file_index,
 +               input_streams[ost->source_index]->st->index,
 +               ost->file_index,
 +               ost->index);
 +        if (ost->sync_ist != input_streams[ost->source_index])
 +            av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
 +                   ost->sync_ist->file_index,
 +                   ost->sync_ist->st->index);
 +        if (ost->stream_copy)
 +            av_log(NULL, AV_LOG_INFO, " (copy)");
 +        else
 +            av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
 +                   input_streams[ost->source_index]->dec->name : "?",
 +                   ost->enc ? ost->enc->name : "?");
 +        av_log(NULL, AV_LOG_INFO, "\n");
 +    }
 +
 +    if (ret) {
 +        av_log(NULL, AV_LOG_ERROR, "%s\n", error);
 +        return ret;
 +    }
 +
 +    if (want_sdp) {
 +        print_sdp();
 +    }
 +
 +    return 0;
 +}
 +
 +/* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
 +static int need_output(void)
 +{
 +    int i;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost    = output_streams[i];
 +        OutputFile *of       = output_files[ost->file_index];
 +        AVFormatContext *os  = output_files[ost->file_index]->ctx;
 +
 +        if (ost->finished ||
 +            (os->pb && avio_tell(os->pb) >= of->limit_filesize))
 +            continue;
 +        if (ost->frame_number >= ost->max_frames) {
 +            int j;
 +            for (j = 0; j < of->ctx->nb_streams; j++)
 +                close_output_stream(output_streams[of->ost_index + j]);
 +            continue;
 +        }
 +
 +        return 1;
 +    }
 +
 +    return 0;
 +}
 +
 +/**
 + * Select the output stream to process.
 + *
 + * @return  selected output stream, or NULL if none available
 + */
 +static OutputStream *choose_output(void)
 +{
 +    int i;
 +    int64_t opts_min = INT64_MAX;
 +    OutputStream *ost_min = NULL;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
 +                                    AV_TIME_BASE_Q);
 +        if (!ost->unavailable && !ost->finished && opts < opts_min) {
 +            opts_min = opts;
 +            ost_min  = ost;
 +        }
 +    }
 +    return ost_min;
 +}
 +
 +static int check_keyboard_interaction(int64_t cur_time)
 +{
 +    int i, ret, key;
 +    static int64_t last_time;
 +    if (received_nb_signals)
 +        return AVERROR_EXIT;
 +    /* read_key() returns 0 on EOF */
 +    if(cur_time - last_time >= 100000 && !run_as_daemon){
 +        key =  read_key();
 +        last_time = cur_time;
 +    }else
 +        key = -1;
 +    if (key == 'q')
 +        return AVERROR_EXIT;
 +    if (key == '+') av_log_set_level(av_log_get_level()+10);
 +    if (key == '-') av_log_set_level(av_log_get_level()-10);
 +    if (key == 's') qp_hist     ^= 1;
 +    if (key == 'h'){
 +        if (do_hex_dump){
 +            do_hex_dump = do_pkt_dump = 0;
 +        } else if(do_pkt_dump){
 +            do_hex_dump = 1;
 +        } else
 +            do_pkt_dump = 1;
 +        av_log_set_level(AV_LOG_DEBUG);
 +    }
 +    if (key == 'c' || key == 'C'){
 +        char buf[4096], target[64], command[256], arg[256] = {0};
 +        double time;
 +        int k, n = 0;
 +        fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
 +        i = 0;
 +        while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
 +            if (k > 0)
 +                buf[i++] = k;
 +        buf[i] = 0;
 +        if (k > 0 &&
 +            (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
 +            av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
 +                   target, time, command, arg);
 +            for (i = 0; i < nb_filtergraphs; i++) {
 +                FilterGraph *fg = filtergraphs[i];
 +                if (fg->graph) {
 +                    if (time < 0) {
 +                        ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
 +                                                          key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
 +                        fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
 +                    } else if (key == 'c') {
 +                        fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
 +                        ret = AVERROR_PATCHWELCOME;
 +                    } else {
 +                        ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
 +                    }
 +                }
 +            }
 +        } else {
 +            av_log(NULL, AV_LOG_ERROR,
 +                   "Parse error, at least 3 arguments were expected, "
 +                   "only %d given in string '%s'\n", n, buf);
 +        }
 +    }
 +    if (key == 'd' || key == 'D'){
 +        int debug=0;
 +        if(key == 'D') {
 +            debug = input_streams[0]->st->codec->debug<<1;
 +            if(!debug) debug = 1;
 +            while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
 +                debug += debug;
 +        }else
 +            if(scanf("%d", &debug)!=1)
 +                fprintf(stderr,"error parsing debug value\n");
 +        for(i=0;i<nb_input_streams;i++) {
 +            input_streams[i]->st->codec->debug = debug;
 +        }
 +        for(i=0;i<nb_output_streams;i++) {
 +            OutputStream *ost = output_streams[i];
 +            ost->st->codec->debug = debug;
 +        }
 +        if(debug) av_log_set_level(AV_LOG_DEBUG);
 +        fprintf(stderr,"debug=%d\n", debug);
 +    }
 +    if (key == '?'){
 +        fprintf(stderr, "key    function\n"
 +                        "?      show this help\n"
 +                        "+      increase verbosity\n"
 +                        "-      decrease verbosity\n"
 +                        "c      Send command to first matching filter supporting it\n"
 +                        "C      Send/Que command to all matching filters\n"
 +                        "D      cycle through available debug modes\n"
 +                        "h      dump packets/hex press to cycle through the 3 states\n"
 +                        "q      quit\n"
 +                        "s      Show QP histogram\n"
 +        );
 +    }
 +    return 0;
 +}
 +
 +#if HAVE_PTHREADS
 +static void *input_thread(void *arg)
 +{
 +    InputFile *f = arg;
 +    int ret = 0;
 +
 +    while (!transcoding_finished && ret >= 0) {
 +        AVPacket pkt;
 +        ret = av_read_frame(f->ctx, &pkt);
 +
 +        if (ret == AVERROR(EAGAIN)) {
 +            av_usleep(10000);
 +            ret = 0;
 +            continue;
 +        } else if (ret < 0)
 +            break;
 +
 +        pthread_mutex_lock(&f->fifo_lock);
 +        while (!av_fifo_space(f->fifo))
 +            pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
 +
 +        av_dup_packet(&pkt);
 +        av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
 +
 +        pthread_mutex_unlock(&f->fifo_lock);
 +    }
 +
 +    f->finished = 1;
 +    return NULL;
 +}
 +
 +static void free_input_threads(void)
 +{
 +    int i;
 +
 +    if (nb_input_files == 1)
 +        return;
 +
 +    transcoding_finished = 1;
 +
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +        AVPacket pkt;
 +
 +        if (!f->fifo || f->joined)
 +            continue;
 +
 +        pthread_mutex_lock(&f->fifo_lock);
 +        while (av_fifo_size(f->fifo)) {
 +            av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
 +            av_free_packet(&pkt);
 +        }
 +        pthread_cond_signal(&f->fifo_cond);
 +        pthread_mutex_unlock(&f->fifo_lock);
 +
 +        pthread_join(f->thread, NULL);
 +        f->joined = 1;
 +
 +        while (av_fifo_size(f->fifo)) {
 +            av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
 +            av_free_packet(&pkt);
 +        }
 +        av_fifo_free(f->fifo);
 +    }
 +}
 +
 +static int init_input_threads(void)
 +{
 +    int i, ret;
 +
 +    if (nb_input_files == 1)
 +        return 0;
 +
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +
 +        if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
 +            return AVERROR(ENOMEM);
 +
 +        pthread_mutex_init(&f->fifo_lock, NULL);
 +        pthread_cond_init (&f->fifo_cond, NULL);
 +
 +        if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
 +            return AVERROR(ret);
 +    }
 +    return 0;
 +}
 +
 +static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
 +{
 +    int ret = 0;
 +
 +    pthread_mutex_lock(&f->fifo_lock);
 +
 +    if (av_fifo_size(f->fifo)) {
 +        av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
 +        pthread_cond_signal(&f->fifo_cond);
 +    } else {
 +        if (f->finished)
 +            ret = AVERROR_EOF;
 +        else
 +            ret = AVERROR(EAGAIN);
 +    }
 +
 +    pthread_mutex_unlock(&f->fifo_lock);
 +
 +    return ret;
 +}
 +#endif
 +
 +static int get_input_packet(InputFile *f, AVPacket *pkt)
 +{
 +    if (f->rate_emu) {
 +        int i;
 +        for (i = 0; i < f->nb_streams; i++) {
 +            InputStream *ist = input_streams[f->ist_index + i];
 +            int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
 +            int64_t now = av_gettime() - ist->start;
 +            if (pts > now)
 +                return AVERROR(EAGAIN);
 +        }
 +    }
 +
 +#if HAVE_PTHREADS
 +    if (nb_input_files > 1)
 +        return get_input_packet_mt(f, pkt);
 +#endif
 +    return av_read_frame(f->ctx, pkt);
 +}
 +
 +static int got_eagain(void)
 +{
 +    int i;
 +    for (i = 0; i < nb_output_streams; i++)
 +        if (output_streams[i]->unavailable)
 +            return 1;
 +    return 0;
 +}
 +
 +static void reset_eagain(void)
 +{
 +    int i;
 +    for (i = 0; i < nb_input_files; i++)
 +        input_files[i]->eagain = 0;
 +    for (i = 0; i < nb_output_streams; i++)
 +        output_streams[i]->unavailable = 0;
 +}
 +
 +/*
 + * Return
 + * - 0 -- one packet was read and processed
 + * - AVERROR(EAGAIN) -- no packets were available for selected file,
 + *   this function should be called again
 + * - AVERROR_EOF -- this function should not be called again
 + */
 +static int process_input(int file_index)
 +{
 +    InputFile *ifile = input_files[file_index];
 +    AVFormatContext *is;
 +    InputStream *ist;
 +    AVPacket pkt;
 +    int ret, i, j;
 +
 +    is  = ifile->ctx;
 +    ret = get_input_packet(ifile, &pkt);
 +
 +    if (ret == AVERROR(EAGAIN)) {
 +        ifile->eagain = 1;
 +        return ret;
 +    }
 +    if (ret < 0) {
 +        if (ret != AVERROR_EOF) {
 +            print_error(is->filename, ret);
 +            if (exit_on_error)
 +                exit_program(1);
 +        }
 +        ifile->eof_reached = 1;
 +
 +        for (i = 0; i < ifile->nb_streams; i++) {
 +            ist = input_streams[ifile->ist_index + i];
 +            if (ist->decoding_needed)
 +                output_packet(ist, NULL);
 +
 +            /* mark all outputs that don't go through lavfi as finished */
 +            for (j = 0; j < nb_output_streams; j++) {
 +                OutputStream *ost = output_streams[j];
 +
 +                if (ost->source_index == ifile->ist_index + i &&
 +                    (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
 +                    close_output_stream(ost);
 +            }
 +        }
 +
 +        return AVERROR(EAGAIN);
 +    }
 +
 +    reset_eagain();
 +
 +    if (do_pkt_dump) {
 +        av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
 +                         is->streams[pkt.stream_index]);
 +    }
 +    /* the following test is needed in case new streams appear
 +       dynamically in stream : we ignore them */
 +    if (pkt.stream_index >= ifile->nb_streams) {
 +        report_new_stream(file_index, &pkt);
 +        goto discard_packet;
 +    }
 +
 +    ist = input_streams[ifile->ist_index + pkt.stream_index];
 +    if (ist->discard)
 +        goto discard_packet;
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
 +               "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
 +               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
 +               av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
 +               av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
 +               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
 +               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
 +               av_ts2str(input_files[ist->file_index]->ts_offset),
 +               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
 +    }
 +
 +    if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
 +        int64_t stime, stime2;
 +        // Correcting starttime based on the enabled streams
 +        // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
 +        //       so we instead do it here as part of discontinuity handling
 +        if (   ist->next_dts == AV_NOPTS_VALUE
 +            && ifile->ts_offset == -is->start_time
 +            && (is->iformat->flags & AVFMT_TS_DISCONT)) {
 +            int64_t new_start_time = INT64_MAX;
 +            for (i=0; i<is->nb_streams; i++) {
 +                AVStream *st = is->streams[i];
 +                if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
 +                    continue;
 +                new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
 +            }
 +            if (new_start_time > is->start_time) {
 +                av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
 +                ifile->ts_offset = -new_start_time;
 +            }
 +        }
 +
 +        stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
 +        stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
 +        ist->wrap_correction_done = 1;
 +
 +        if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
 +            pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
 +            ist->wrap_correction_done = 0;
 +        }
 +        if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
 +            pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
 +            ist->wrap_correction_done = 0;
 +        }
 +    }
 +
 +    if (pkt.dts != AV_NOPTS_VALUE)
 +        pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
 +    if (pkt.pts != AV_NOPTS_VALUE)
 +        pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
 +
 +    if (pkt.pts != AV_NOPTS_VALUE)
 +        pkt.pts *= ist->ts_scale;
 +    if (pkt.dts != AV_NOPTS_VALUE)
 +        pkt.dts *= ist->ts_scale;
 +
 +    if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
 +        && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
 +        int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
 +        int64_t delta   = pkt_dts - ifile->last_ts;
 +        if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
 +            (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
 +                ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
 +            ifile->ts_offset -= delta;
 +            av_log(NULL, AV_LOG_DEBUG,
 +                   "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
 +                   delta, ifile->ts_offset);
 +            pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +            if (pkt.pts != AV_NOPTS_VALUE)
 +                pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +        }
 +    }
 +
 +    if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
 +        !copy_ts) {
 +        int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
 +        int64_t delta   = pkt_dts - ist->next_dts;
 +        if (is->iformat->flags & AVFMT_TS_DISCONT) {
 +        if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
 +            (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
 +                ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
 +            pkt_dts + AV_TIME_BASE/10 < ist->pts){
 +            ifile->ts_offset -= delta;
 +            av_log(NULL, AV_LOG_DEBUG,
 +                   "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
 +                   delta, ifile->ts_offset);
 +            pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +            if (pkt.pts != AV_NOPTS_VALUE)
 +                pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +        }
 +        } else {
 +            if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
 +                (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
 +               ) {
 +                av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
 +                pkt.dts = AV_NOPTS_VALUE;
 +            }
 +            if (pkt.pts != AV_NOPTS_VALUE){
 +                int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
 +                delta   = pkt_pts - ist->next_dts;
 +                if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
 +                    (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
 +                   ) {
 +                    av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
 +                    pkt.pts = AV_NOPTS_VALUE;
 +                }
 +            }
 +        }
 +    }
 +
 +    if (pkt.dts != AV_NOPTS_VALUE)
 +        ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
 +               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
 +               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
 +               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
 +               av_ts2str(input_files[ist->file_index]->ts_offset),
 +               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
 +    }
 +
 +    sub2video_heartbeat(ist, pkt.pts);
 +
 +    ret = output_packet(ist, &pkt);
 +    if (ret < 0) {
 +        char buf[128];
 +        av_strerror(ret, buf, sizeof(buf));
 +        av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
 +                ist->file_index, ist->st->index, buf);
 +        if (exit_on_error)
 +            exit_program(1);
 +    }
 +
 +discard_packet:
 +    av_free_packet(&pkt);
 +
 +    return 0;
 +}
 +
 +/**
 + * Perform a step of transcoding for the specified filter graph.
 + *
 + * @param[in]  graph     filter graph to consider
 + * @param[out] best_ist  input stream where a frame would allow to continue
 + * @return  0 for success, <0 for error
 + */
 +static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
 +{
 +    int i, ret;
 +    int nb_requests, nb_requests_max = 0;
 +    InputFilter *ifilter;
 +    InputStream *ist;
 +
 +    *best_ist = NULL;
 +    ret = avfilter_graph_request_oldest(graph->graph);
 +    if (ret >= 0)
 +        return reap_filters();
 +
 +    if (ret == AVERROR_EOF) {
 +        ret = reap_filters();
 +        for (i = 0; i < graph->nb_outputs; i++)
 +            close_output_stream(graph->outputs[i]->ost);
 +        return ret;
 +    }
 +    if (ret != AVERROR(EAGAIN))
 +        return ret;
 +
 +    for (i = 0; i < graph->nb_inputs; i++) {
 +        ifilter = graph->inputs[i];
 +        ist = ifilter->ist;
 +        if (input_files[ist->file_index]->eagain ||
 +            input_files[ist->file_index]->eof_reached)
 +            continue;
 +        nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
 +        if (nb_requests > nb_requests_max) {
 +            nb_requests_max = nb_requests;
 +            *best_ist = ist;
 +        }
 +    }
 +
 +    if (!*best_ist)
 +        for (i = 0; i < graph->nb_outputs; i++)
 +            graph->outputs[i]->ost->unavailable = 1;
 +
 +    return 0;
 +}
 +
 +/**
 + * Run a single step of transcoding.
 + *
 + * @return  0 for success, <0 for error
 + */
 +static int transcode_step(void)
 +{
 +    OutputStream *ost;
 +    InputStream  *ist;
 +    int ret;
 +
 +    ost = choose_output();
 +    if (!ost) {
 +        if (got_eagain()) {
 +            reset_eagain();
 +            av_usleep(10000);
 +            return 0;
 +        }
 +        av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
 +        return AVERROR_EOF;
 +    }
 +
 +    if (ost->filter) {
 +        if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
 +            return ret;
 +        if (!ist)
 +            return 0;
 +    } else {
 +        av_assert0(ost->source_index >= 0);
 +        ist = input_streams[ost->source_index];
 +    }
 +
 +    ret = process_input(ist->file_index);
 +    if (ret == AVERROR(EAGAIN)) {
 +        if (input_files[ist->file_index]->eagain)
 +            ost->unavailable = 1;
 +        return 0;
 +    }
 +    if (ret < 0)
 +        return ret == AVERROR_EOF ? 0 : ret;
 +
 +    return reap_filters();
 +}
 +
 +/*
 + * The following code is the main loop of the file converter
 + */
 +static int transcode(void)
 +{
 +    int ret, i;
 +    AVFormatContext *os;
 +    OutputStream *ost;
 +    InputStream *ist;
 +    int64_t timer_start;
 +
 +    ret = transcode_init();
 +    if (ret < 0)
 +        goto fail;
 +
 +    if (stdin_interaction) {
 +        av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
 +    }
 +
 +    timer_start = av_gettime();
 +
 +#if HAVE_PTHREADS
 +    if ((ret = init_input_threads()) < 0)
 +        goto fail;
 +#endif
 +
 +    while (!received_sigterm) {
 +        int64_t cur_time= av_gettime();
 +
 +        /* if 'q' pressed, exits */
 +        if (stdin_interaction)
 +            if (check_keyboard_interaction(cur_time) < 0)
 +                break;
 +
 +        /* check if there's any stream where output is still needed */
 +        if (!need_output()) {
 +            av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
 +            break;
 +        }
 +
 +        ret = transcode_step();
 +        if (ret < 0) {
 +            if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
 +                continue;
 +
 +            av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
 +            break;
 +        }
 +
 +        /* dump report by using the output first video and audio streams */
 +        print_report(0, timer_start, cur_time);
 +    }
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +
 +    /* at the end of stream, we must flush the decoder buffers */
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +        if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
 +            output_packet(ist, NULL);
 +        }
 +    }
 +    flush_encoders();
 +
 +    term_exit();
 +
 +    /* write the trailer if needed and close file */
 +    for (i = 0; i < nb_output_files; i++) {
 +        os = output_files[i]->ctx;
 +        av_write_trailer(os);
 +    }
 +
 +    /* dump report by using the first video and audio streams */
 +    print_report(1, timer_start, av_gettime());
 +
 +    /* close each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +        if (ost->encoding_needed) {
 +            av_freep(&ost->st->codec->stats_in);
 +            avcodec_close(ost->st->codec);
 +        }
 +    }
 +
 +    /* close each decoder */
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +        if (ist->decoding_needed) {
 +            avcodec_close(ist->st->codec);
 +            if (ist->hwaccel_uninit)
 +                ist->hwaccel_uninit(ist->st->codec);
 +        }
 +    }
 +
 +    /* finished ! */
 +    ret = 0;
 +
 + fail:
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +
 +    if (output_streams) {
 +        for (i = 0; i < nb_output_streams; i++) {
 +            ost = output_streams[i];
 +            if (ost) {
 +                if (ost->stream_copy)
 +                    av_freep(&ost->st->codec->extradata);
 +                if (ost->logfile) {
 +                    fclose(ost->logfile);
 +                    ost->logfile = NULL;
 +                }
 +                av_freep(&ost->st->codec->subtitle_header);
 +                av_freep(&ost->forced_kf_pts);
 +                av_freep(&ost->apad);
 +                av_dict_free(&ost->opts);
 +                av_dict_free(&ost->swr_opts);
 +                av_dict_free(&ost->resample_opts);
 +            }
 +        }
 +    }
 +    return ret;
 +}
 +
 +
 +static int64_t getutime(void)
 +{
 +#if HAVE_GETRUSAGE
 +    struct rusage rusage;
 +
 +    getrusage(RUSAGE_SELF, &rusage);
 +    return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
 +#elif HAVE_GETPROCESSTIMES
 +    HANDLE proc;
 +    FILETIME c, e, k, u;
 +    proc = GetCurrentProcess();
 +    GetProcessTimes(proc, &c, &e, &k, &u);
 +    return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
 +#else
 +    return av_gettime();
 +#endif
 +}
 +
 +static int64_t getmaxrss(void)
 +{
 +#if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
 +    struct rusage rusage;
 +    getrusage(RUSAGE_SELF, &rusage);
 +    return (int64_t)rusage.ru_maxrss * 1024;
 +#elif HAVE_GETPROCESSMEMORYINFO
 +    HANDLE proc;
 +    PROCESS_MEMORY_COUNTERS memcounters;
 +    proc = GetCurrentProcess();
 +    memcounters.cb = sizeof(memcounters);
 +    GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
 +    return memcounters.PeakPagefileUsage;
 +#else
 +    return 0;
 +#endif
 +}
 +
 +static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
 +{
 +}
 +
 +int main(int argc, char **argv)
 +{
 +    int ret;
 +    int64_t ti;
 +
 +    register_exit(ffmpeg_cleanup);
 +
 +    setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
 +
 +    av_log_set_flags(AV_LOG_SKIP_REPEATED);
 +    parse_loglevel(argc, argv, options);
 +
 +    if(argc>1 && !strcmp(argv[1], "-d")){
 +        run_as_daemon=1;
 +        av_log_set_callback(log_callback_null);
 +        argc--;
 +        argv++;
 +    }
 +
 +    avcodec_register_all();
 +#if CONFIG_AVDEVICE
 +    avdevice_register_all();
 +#endif
 +    avfilter_register_all();
 +    av_register_all();
 +    avformat_network_init();
 +
 +    show_banner(argc, argv, options);
 +
 +    term_init();
 +
 +    /* parse options and open all input/output files */
 +    ret = ffmpeg_parse_options(argc, argv);
 +    if (ret < 0)
 +        exit_program(1);
 +
 +    if (nb_output_files <= 0 && nb_input_files == 0) {
 +        show_usage();
 +        av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
 +        exit_program(1);
 +    }
 +
 +    /* file converter / grab */
 +    if (nb_output_files <= 0) {
 +        av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
 +        exit_program(1);
 +    }
 +
 +//     if (nb_input_files == 0) {
 +//         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
 +//         exit_program(1);
 +//     }
 +
 +    current_time = ti = getutime();
 +    if (transcode() < 0)
 +        exit_program(1);
 +    ti = getutime() - ti;
 +    if (do_benchmark) {
 +        printf("bench: utime=%0.3fs\n", ti / 1000000.0);
 +    }
 +    av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
 +           decode_error_stat[0], decode_error_stat[1]);
 +    if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
 +        exit_program(69);
 +
 +    exit_program(received_nb_signals ? 255 : 0);
 +    return 0;
 +}
diff --cc ffmpeg_filter.c
index ad97f0d,0000000..9d945fc
mode 100644,000000..100644
--- /dev/null
@@@ -1,926 -1,0 +1,928 @@@
 +/*
 + * ffmpeg filter configuration
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
++#include <stdint.h>
++
 +#include "ffmpeg.h"
 +
 +#include "libavfilter/avfilter.h"
 +#include "libavfilter/buffersink.h"
 +
 +#include "libavresample/avresample.h"
 +
 +#include "libavutil/avassert.h"
 +#include "libavutil/avstring.h"
 +#include "libavutil/bprint.h"
 +#include "libavutil/channel_layout.h"
 +#include "libavutil/opt.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/pixfmt.h"
 +#include "libavutil/imgutils.h"
 +#include "libavutil/samplefmt.h"
 +
 +enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum AVPixelFormat target)
 +{
 +    if (codec && codec->pix_fmts) {
 +        const enum AVPixelFormat *p = codec->pix_fmts;
 +        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
 +        int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
 +        enum AVPixelFormat best= AV_PIX_FMT_NONE;
 +        if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
 +            if (st->codec->codec_id == AV_CODEC_ID_MJPEG) {
 +                p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE };
 +            } else if (st->codec->codec_id == AV_CODEC_ID_LJPEG) {
 +                p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P,
 +                                                 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE };
 +            }
 +        }
 +        for (; *p != AV_PIX_FMT_NONE; p++) {
 +            best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
 +            if (*p == target)
 +                break;
 +        }
 +        if (*p == AV_PIX_FMT_NONE) {
 +            if (target != AV_PIX_FMT_NONE)
 +                av_log(NULL, AV_LOG_WARNING,
 +                       "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
 +                       av_get_pix_fmt_name(target),
 +                       codec->name,
 +                       av_get_pix_fmt_name(best));
 +            return best;
 +        }
 +    }
 +    return target;
 +}
 +
 +void choose_sample_fmt(AVStream *st, AVCodec *codec)
 +{
 +    if (codec && codec->sample_fmts) {
 +        const enum AVSampleFormat *p = codec->sample_fmts;
 +        for (; *p != -1; p++) {
 +            if (*p == st->codec->sample_fmt)
 +                break;
 +        }
 +        if (*p == -1) {
 +            if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
 +                av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
 +            if(av_get_sample_fmt_name(st->codec->sample_fmt))
 +            av_log(NULL, AV_LOG_WARNING,
 +                   "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
 +                   av_get_sample_fmt_name(st->codec->sample_fmt),
 +                   codec->name,
 +                   av_get_sample_fmt_name(codec->sample_fmts[0]));
 +            st->codec->sample_fmt = codec->sample_fmts[0];
 +        }
 +    }
 +}
 +
 +static char *choose_pix_fmts(OutputStream *ost)
 +{
 +    AVDictionaryEntry *strict_dict = av_dict_get(ost->opts, "strict", NULL, 0);
 +    if (strict_dict)
 +        // used by choose_pixel_fmt() and below
 +        av_opt_set(ost->st->codec, "strict", strict_dict->value, 0);
 +
 +     if (ost->keep_pix_fmt) {
 +        if (ost->filter)
 +            avfilter_graph_set_auto_convert(ost->filter->graph->graph,
 +                                            AVFILTER_AUTO_CONVERT_NONE);
 +        if (ost->st->codec->pix_fmt == AV_PIX_FMT_NONE)
 +            return NULL;
 +        return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
 +    }
 +    if (ost->st->codec->pix_fmt != AV_PIX_FMT_NONE) {
 +        return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
 +    } else if (ost->enc && ost->enc->pix_fmts) {
 +        const enum AVPixelFormat *p;
 +        AVIOContext *s = NULL;
 +        uint8_t *ret;
 +        int len;
 +
 +        if (avio_open_dyn_buf(&s) < 0)
 +            exit_program(1);
 +
 +        p = ost->enc->pix_fmts;
 +        if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
 +            if (ost->st->codec->codec_id == AV_CODEC_ID_MJPEG) {
 +                p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE };
 +            } else if (ost->st->codec->codec_id == AV_CODEC_ID_LJPEG) {
 +                p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P,
 +                                                    AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE };
 +            }
 +        }
 +
 +        for (; *p != AV_PIX_FMT_NONE; p++) {
 +            const char *name = av_get_pix_fmt_name(*p);
 +            avio_printf(s, "%s|", name);
 +        }
 +        len = avio_close_dyn_buf(s, &ret);
 +        ret[len - 1] = 0;
 +        return ret;
 +    } else
 +        return NULL;
 +}
 +
 +/* Define a function for building a string containing a list of
 + * allowed formats. */
 +#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name)           \
 +static char *choose_ ## var ## s(OutputStream *ost)                            \
 +{                                                                              \
 +    if (ost->st->codec->var != none) {                                         \
 +        get_name(ost->st->codec->var);                                         \
 +        return av_strdup(name);                                                \
 +    } else if (ost->enc && ost->enc->supported_list) {                         \
 +        const type *p;                                                         \
 +        AVIOContext *s = NULL;                                                 \
 +        uint8_t *ret;                                                          \
 +        int len;                                                               \
 +                                                                               \
 +        if (avio_open_dyn_buf(&s) < 0)                                         \
 +            exit_program(1);                                                           \
 +                                                                               \
 +        for (p = ost->enc->supported_list; *p != none; p++) {                  \
 +            get_name(*p);                                                      \
 +            avio_printf(s, "%s|", name);                                       \
 +        }                                                                      \
 +        len = avio_close_dyn_buf(s, &ret);                                     \
 +        ret[len - 1] = 0;                                                      \
 +        return ret;                                                            \
 +    } else                                                                     \
 +        return NULL;                                                           \
 +}
 +
 +// DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE,
 +//                   GET_PIX_FMT_NAME)
 +
 +DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
 +                  AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
 +
 +DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
 +                  GET_SAMPLE_RATE_NAME)
 +
 +DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
 +                  GET_CH_LAYOUT_NAME)
 +
 +FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
 +{
 +    FilterGraph *fg = av_mallocz(sizeof(*fg));
 +
 +    if (!fg)
 +        exit_program(1);
 +    fg->index = nb_filtergraphs;
 +
 +    GROW_ARRAY(fg->outputs, fg->nb_outputs);
 +    if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
 +        exit_program(1);
 +    fg->outputs[0]->ost   = ost;
 +    fg->outputs[0]->graph = fg;
 +
 +    ost->filter = fg->outputs[0];
 +
 +    GROW_ARRAY(fg->inputs, fg->nb_inputs);
 +    if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
 +        exit_program(1);
 +    fg->inputs[0]->ist   = ist;
 +    fg->inputs[0]->graph = fg;
 +
 +    GROW_ARRAY(ist->filters, ist->nb_filters);
 +    ist->filters[ist->nb_filters - 1] = fg->inputs[0];
 +
 +    GROW_ARRAY(filtergraphs, nb_filtergraphs);
 +    filtergraphs[nb_filtergraphs - 1] = fg;
 +
 +    return fg;
 +}
 +
 +static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
 +{
 +    InputStream *ist = NULL;
 +    enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
 +    int i;
 +
 +    // TODO: support other filter types
 +    if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
 +               "currently.\n");
 +        exit_program(1);
 +    }
 +
 +    if (in->name) {
 +        AVFormatContext *s;
 +        AVStream       *st = NULL;
 +        char *p;
 +        int file_idx = strtol(in->name, &p, 0);
 +
 +        if (file_idx < 0 || file_idx >= nb_input_files) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
 +                   file_idx, fg->graph_desc);
 +            exit_program(1);
 +        }
 +        s = input_files[file_idx]->ctx;
 +
 +        for (i = 0; i < s->nb_streams; i++) {
 +            enum AVMediaType stream_type = s->streams[i]->codec->codec_type;
 +            if (stream_type != type &&
 +                !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
 +                  type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
 +                continue;
 +            if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
 +                st = s->streams[i];
 +                break;
 +            }
 +        }
 +        if (!st) {
 +            av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
 +                   "matches no streams.\n", p, fg->graph_desc);
 +            exit_program(1);
 +        }
 +        ist = input_streams[input_files[file_idx]->ist_index + st->index];
 +    } else {
 +        /* find the first unused stream of corresponding type */
 +        for (i = 0; i < nb_input_streams; i++) {
 +            ist = input_streams[i];
 +            if (ist->st->codec->codec_type == type && ist->discard)
 +                break;
 +        }
 +        if (i == nb_input_streams) {
 +            av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
 +                   "unlabeled input pad %d on filter %s\n", in->pad_idx,
 +                   in->filter_ctx->name);
 +            exit_program(1);
 +        }
 +    }
 +    av_assert0(ist);
 +
 +    ist->discard         = 0;
 +    ist->decoding_needed++;
 +    ist->st->discard = AVDISCARD_NONE;
 +
 +    GROW_ARRAY(fg->inputs, fg->nb_inputs);
 +    if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
 +        exit_program(1);
 +    fg->inputs[fg->nb_inputs - 1]->ist   = ist;
 +    fg->inputs[fg->nb_inputs - 1]->graph = fg;
 +
 +    GROW_ARRAY(ist->filters, ist->nb_filters);
 +    ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
 +}
 +
 +static int insert_trim(int64_t start_time, int64_t duration,
 +                       AVFilterContext **last_filter, int *pad_idx,
 +                       const char *filter_name)
 +{
 +    AVFilterGraph *graph = (*last_filter)->graph;
 +    AVFilterContext *ctx;
 +    const AVFilter *trim;
 +    enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
 +    const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
 +    int ret = 0;
 +
 +    if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
 +        return 0;
 +
 +    trim = avfilter_get_by_name(name);
 +    if (!trim) {
 +        av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
 +               "recording time.\n", name);
 +        return AVERROR_FILTER_NOT_FOUND;
 +    }
 +
 +    ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
 +    if (!ctx)
 +        return AVERROR(ENOMEM);
 +
 +    if (duration != INT64_MAX) {
 +        ret = av_opt_set_int(ctx, "durationi", duration,
 +                                AV_OPT_SEARCH_CHILDREN);
 +    }
 +    if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
 +        ret = av_opt_set_int(ctx, "starti", start_time,
 +                                AV_OPT_SEARCH_CHILDREN);
 +    }
 +    if (ret < 0) {
 +        av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
 +        return ret;
 +    }
 +
 +    ret = avfilter_init_str(ctx, NULL);
 +    if (ret < 0)
 +        return ret;
 +
 +    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
 +    if (ret < 0)
 +        return ret;
 +
 +    *last_filter = ctx;
 +    *pad_idx     = 0;
 +    return 0;
 +}
 +
 +static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    char *pix_fmts;
 +    OutputStream *ost = ofilter->ost;
 +    OutputFile    *of = output_files[ost->file_index];
 +    AVCodecContext *codec = ost->st->codec;
 +    AVFilterContext *last_filter = out->filter_ctx;
 +    int pad_idx = out->pad_idx;
 +    int ret;
 +    char name[255];
 +
 +    snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
 +    ret = avfilter_graph_create_filter(&ofilter->filter,
 +                                       avfilter_get_by_name("buffersink"),
 +                                       name, NULL, NULL, fg->graph);
 +
 +    if (ret < 0)
 +        return ret;
 +
 +    if (codec->width || codec->height) {
 +        char args[255];
 +        AVFilterContext *filter;
 +
 +        snprintf(args, sizeof(args), "%d:%d:0x%X",
 +                 codec->width,
 +                 codec->height,
 +                 (unsigned)ost->sws_flags);
 +        snprintf(name, sizeof(name), "scaler for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
 +                                                name, args, NULL, fg->graph)) < 0)
 +            return ret;
 +        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
 +            return ret;
 +
 +        last_filter = filter;
 +        pad_idx = 0;
 +    }
 +
 +    if ((pix_fmts = choose_pix_fmts(ost))) {
 +        AVFilterContext *filter;
 +        snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&filter,
 +                                                avfilter_get_by_name("format"),
 +                                                "format", pix_fmts, NULL,
 +                                                fg->graph);
 +        av_freep(&pix_fmts);
 +        if (ret < 0)
 +            return ret;
 +        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
 +            return ret;
 +
 +        last_filter = filter;
 +        pad_idx     = 0;
 +    }
 +
 +    if (ost->frame_rate.num && 0) {
 +        AVFilterContext *fps;
 +        char args[255];
 +
 +        snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
 +                 ost->frame_rate.den);
 +        snprintf(name, sizeof(name), "fps for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
 +                                           name, args, NULL, fg->graph);
 +        if (ret < 0)
 +            return ret;
 +
 +        ret = avfilter_link(last_filter, pad_idx, fps, 0);
 +        if (ret < 0)
 +            return ret;
 +        last_filter = fps;
 +        pad_idx = 0;
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for output stream %d:%d",
 +             ost->file_index, ost->index);
 +    ret = insert_trim(of->start_time, of->recording_time,
 +                      &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +
 +    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    OutputStream *ost = ofilter->ost;
 +    OutputFile    *of = output_files[ost->file_index];
 +    AVCodecContext *codec  = ost->st->codec;
 +    AVFilterContext *last_filter = out->filter_ctx;
 +    int pad_idx = out->pad_idx;
 +    char *sample_fmts, *sample_rates, *channel_layouts;
 +    char name[255];
 +    int ret;
 +
 +    snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
 +    ret = avfilter_graph_create_filter(&ofilter->filter,
 +                                       avfilter_get_by_name("abuffersink"),
 +                                       name, NULL, NULL, fg->graph);
 +    if (ret < 0)
 +        return ret;
 +    if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
 +        return ret;
 +
 +#define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
 +    AVFilterContext *filt_ctx;                                              \
 +                                                                            \
 +    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
 +           "similarly to -af " filter_name "=%s.\n", arg);                  \
 +                                                                            \
 +    ret = avfilter_graph_create_filter(&filt_ctx,                           \
 +                                       avfilter_get_by_name(filter_name),   \
 +                                       filter_name, arg, NULL, fg->graph);  \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    last_filter = filt_ctx;                                                 \
 +    pad_idx = 0;                                                            \
 +} while (0)
 +    if (ost->audio_channels_mapped) {
 +        int i;
 +        AVBPrint pan_buf;
 +        av_bprint_init(&pan_buf, 256, 8192);
 +        av_bprintf(&pan_buf, "0x%"PRIx64,
 +                   av_get_default_channel_layout(ost->audio_channels_mapped));
 +        for (i = 0; i < ost->audio_channels_mapped; i++)
 +            if (ost->audio_channels_map[i] != -1)
 +                av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
 +
 +        AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
 +        av_bprint_finalize(&pan_buf, NULL);
 +    }
 +
 +    if (codec->channels && !codec->channel_layout)
 +        codec->channel_layout = av_get_default_channel_layout(codec->channels);
 +
 +    sample_fmts     = choose_sample_fmts(ost);
 +    sample_rates    = choose_sample_rates(ost);
 +    channel_layouts = choose_channel_layouts(ost);
 +    if (sample_fmts || sample_rates || channel_layouts) {
 +        AVFilterContext *format;
 +        char args[256];
 +        args[0] = 0;
 +
 +        if (sample_fmts)
 +            av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
 +                            sample_fmts);
 +        if (sample_rates)
 +            av_strlcatf(args, sizeof(args), "sample_rates=%s:",
 +                            sample_rates);
 +        if (channel_layouts)
 +            av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
 +                            channel_layouts);
 +
 +        av_freep(&sample_fmts);
 +        av_freep(&sample_rates);
 +        av_freep(&channel_layouts);
 +
 +        snprintf(name, sizeof(name), "audio format for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&format,
 +                                           avfilter_get_by_name("aformat"),
 +                                           name, args, NULL, fg->graph);
 +        if (ret < 0)
 +            return ret;
 +
 +        ret = avfilter_link(last_filter, pad_idx, format, 0);
 +        if (ret < 0)
 +            return ret;
 +
 +        last_filter = format;
 +        pad_idx = 0;
 +    }
 +
 +    if (audio_volume != 256 && 0) {
 +        char args[256];
 +
 +        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
 +        AUTO_INSERT_FILTER("-vol", "volume", args);
 +    }
 +
 +    if (ost->apad && of->shortest) {
 +        char args[256];
 +        int i;
 +
 +        for (i=0; i<of->ctx->nb_streams; i++)
 +            if (of->ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)
 +                break;
 +
 +        if (i<of->ctx->nb_streams) {
 +            snprintf(args, sizeof(args), "%s", ost->apad);
 +            AUTO_INSERT_FILTER("-apad", "apad", args);
 +        }
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for output stream %d:%d",
 +             ost->file_index, ost->index);
 +    ret = insert_trim(of->start_time, of->recording_time,
 +                      &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +#define DESCRIBE_FILTER_LINK(f, inout, in)                         \
 +{                                                                  \
 +    AVFilterContext *ctx = inout->filter_ctx;                      \
 +    AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
 +    int       nb_pads = in ? ctx->nb_inputs   : ctx->nb_outputs;   \
 +    AVIOContext *pb;                                               \
 +                                                                   \
 +    if (avio_open_dyn_buf(&pb) < 0)                                \
 +        exit_program(1);                                           \
 +                                                                   \
 +    avio_printf(pb, "%s", ctx->filter->name);                      \
 +    if (nb_pads > 1)                                               \
 +        avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
 +    avio_w8(pb, 0);                                                \
 +    avio_close_dyn_buf(pb, &f->name);                              \
 +}
 +
 +int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    av_freep(&ofilter->name);
 +    DESCRIBE_FILTER_LINK(ofilter, out, 0);
 +
 +    switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
 +    case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
 +    case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
 +    default: av_assert0(0);
 +    }
 +}
 +
 +static int sub2video_prepare(InputStream *ist)
 +{
 +    AVFormatContext *avf = input_files[ist->file_index]->ctx;
 +    int i, w, h;
 +
 +    /* Compute the size of the canvas for the subtitles stream.
 +       If the subtitles codec has set a size, use it. Otherwise use the
 +       maximum dimensions of the video streams in the same file. */
 +    w = ist->st->codec->width;
 +    h = ist->st->codec->height;
 +    if (!(w && h)) {
 +        for (i = 0; i < avf->nb_streams; i++) {
 +            if (avf->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 +                w = FFMAX(w, avf->streams[i]->codec->width);
 +                h = FFMAX(h, avf->streams[i]->codec->height);
 +            }
 +        }
 +        if (!(w && h)) {
 +            w = FFMAX(w, 720);
 +            h = FFMAX(h, 576);
 +        }
 +        av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
 +    }
 +    ist->sub2video.w = ist->st->codec->width  = ist->resample_width  = w;
 +    ist->sub2video.h = ist->st->codec->height = ist->resample_height = h;
 +
 +    /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
 +       palettes for all rectangles are identical or compatible */
 +    ist->resample_pix_fmt = ist->st->codec->pix_fmt = AV_PIX_FMT_RGB32;
 +
 +    ist->sub2video.frame = av_frame_alloc();
 +    if (!ist->sub2video.frame)
 +        return AVERROR(ENOMEM);
 +    return 0;
 +}
 +
 +static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                        AVFilterInOut *in)
 +{
 +    AVFilterContext *last_filter;
 +    const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
 +    InputStream *ist = ifilter->ist;
 +    InputFile     *f = input_files[ist->file_index];
 +    AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
 +                                         ist->st->time_base;
 +    AVRational fr = ist->framerate;
 +    AVRational sar;
 +    AVBPrint args;
 +    char name[255];
 +    int ret, pad_idx = 0;
 +
 +    if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
 +        return AVERROR(EINVAL);
 +    }
 +
 +    if (!fr.num)
 +        fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
 +
 +    if (ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
 +        ret = sub2video_prepare(ist);
 +        if (ret < 0)
 +            return ret;
 +    }
 +
 +    sar = ist->st->sample_aspect_ratio.num ?
 +          ist->st->sample_aspect_ratio :
 +          ist->st->codec->sample_aspect_ratio;
 +    if(!sar.den)
 +        sar = (AVRational){0,1};
 +    av_bprint_init(&args, 0, 1);
 +    av_bprintf(&args,
 +             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
 +             "pixel_aspect=%d/%d:sws_param=flags=%d", ist->resample_width,
 +             ist->resample_height,
 +             ist->hwaccel_retrieve_data ? ist->hwaccel_retrieved_pix_fmt : ist->resample_pix_fmt,
 +             tb.num, tb.den, sar.num, sar.den,
 +             SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
 +    if (fr.num && fr.den)
 +        av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
 +    snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
 +             ist->file_index, ist->st->index);
 +
 +    if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
 +                                            args.str, NULL, fg->graph)) < 0)
 +        return ret;
 +    last_filter = ifilter->filter;
 +
 +    if (ist->framerate.num) {
 +        AVFilterContext *setpts;
 +
 +        snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
 +                 ist->file_index, ist->st->index);
 +        if ((ret = avfilter_graph_create_filter(&setpts,
 +                                                avfilter_get_by_name("setpts"),
 +                                                name, "N", NULL,
 +                                                fg->graph)) < 0)
 +            return ret;
 +
 +        if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0)
 +            return ret;
 +
 +        last_filter = setpts;
 +    }
 +
 +    if (do_deinterlace) {
 +        AVFilterContext *yadif;
 +
 +        snprintf(name, sizeof(name), "deinterlace input from stream %d:%d",
 +                 ist->file_index, ist->st->index);
 +        if ((ret = avfilter_graph_create_filter(&yadif,
 +                                                avfilter_get_by_name("yadif"),
 +                                                name, "", NULL,
 +                                                fg->graph)) < 0)
 +            return ret;
 +
 +        if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
 +            return ret;
 +
 +        last_filter = yadif;
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for input stream %d:%d",
 +             ist->file_index, ist->st->index);
 +    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
 +                      AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
 +        return ret;
 +    return 0;
 +}
 +
 +static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                        AVFilterInOut *in)
 +{
 +    AVFilterContext *last_filter;
 +    const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
 +    InputStream *ist = ifilter->ist;
 +    InputFile     *f = input_files[ist->file_index];
 +    AVBPrint args;
 +    char name[255];
 +    int ret, pad_idx = 0;
 +
 +    if (ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
 +        return AVERROR(EINVAL);
 +    }
 +
 +    av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
 +    av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
 +             1, ist->st->codec->sample_rate,
 +             ist->st->codec->sample_rate,
 +             av_get_sample_fmt_name(ist->st->codec->sample_fmt));
 +    if (ist->st->codec->channel_layout)
 +        av_bprintf(&args, ":channel_layout=0x%"PRIx64,
 +                   ist->st->codec->channel_layout);
 +    else
 +        av_bprintf(&args, ":channels=%d", ist->st->codec->channels);
 +    snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
 +             ist->file_index, ist->st->index);
 +
 +    if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
 +                                            name, args.str, NULL,
 +                                            fg->graph)) < 0)
 +        return ret;
 +    last_filter = ifilter->filter;
 +
 +#define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
 +    AVFilterContext *filt_ctx;                                              \
 +                                                                            \
 +    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
 +           "similarly to -af " filter_name "=%s.\n", arg);                  \
 +                                                                            \
 +    snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d",      \
 +                fg->index, filter_name, ist->file_index, ist->st->index);   \
 +    ret = avfilter_graph_create_filter(&filt_ctx,                           \
 +                                       avfilter_get_by_name(filter_name),   \
 +                                       name, arg, NULL, fg->graph);         \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    ret = avfilter_link(last_filter, 0, filt_ctx, 0);                       \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    last_filter = filt_ctx;                                                 \
 +} while (0)
 +
 +    if (audio_sync_method > 0) {
 +        char args[256] = {0};
 +
 +        av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
 +        if (audio_drift_threshold != 0.1)
 +            av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
 +        if (!fg->reconfiguration)
 +            av_strlcatf(args, sizeof(args), ":first_pts=0");
 +        AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
 +    }
 +
 +//     if (ost->audio_channels_mapped) {
 +//         int i;
 +//         AVBPrint pan_buf;
 +//         av_bprint_init(&pan_buf, 256, 8192);
 +//         av_bprintf(&pan_buf, "0x%"PRIx64,
 +//                    av_get_default_channel_layout(ost->audio_channels_mapped));
 +//         for (i = 0; i < ost->audio_channels_mapped; i++)
 +//             if (ost->audio_channels_map[i] != -1)
 +//                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
 +//         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
 +//         av_bprint_finalize(&pan_buf, NULL);
 +//     }
 +
 +    if (audio_volume != 256) {
 +        char args[256];
 +
 +        av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
 +               "audio filter instead.\n");
 +
 +        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
 +        AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
 +    }
 +
 +    snprintf(name, sizeof(name), "trim for input stream %d:%d",
 +             ist->file_index, ist->st->index);
 +    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
 +                      AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
 +    if (ret < 0)
 +        return ret;
 +
 +    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                  AVFilterInOut *in)
 +{
 +    av_freep(&ifilter->name);
 +    DESCRIBE_FILTER_LINK(ifilter, in, 1);
 +
 +    switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
 +    case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
 +    case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
 +    default: av_assert0(0);
 +    }
 +}
 +
 +int configure_filtergraph(FilterGraph *fg)
 +{
 +    AVFilterInOut *inputs, *outputs, *cur;
 +    int ret, i, init = !fg->graph, simple = !fg->graph_desc;
 +    const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
 +                                      fg->graph_desc;
 +
 +    avfilter_graph_free(&fg->graph);
 +    if (!(fg->graph = avfilter_graph_alloc()))
 +        return AVERROR(ENOMEM);
 +
 +    if (simple) {
 +        OutputStream *ost = fg->outputs[0]->ost;
 +        char args[512];
 +        AVDictionaryEntry *e = NULL;
 +
 +        snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
 +        fg->graph->scale_sws_opts = av_strdup(args);
 +
 +        args[0] = 0;
 +        while ((e = av_dict_get(ost->swr_opts, "", e,
 +                                AV_DICT_IGNORE_SUFFIX))) {
 +            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
 +        }
 +        if (strlen(args))
 +            args[strlen(args)-1] = 0;
 +        av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
 +
 +        args[0] = '\0';
 +        while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
 +                                AV_DICT_IGNORE_SUFFIX))) {
 +            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
 +        }
 +        if (strlen(args))
 +            args[strlen(args) - 1] = '\0';
 +        fg->graph->resample_lavr_opts = av_strdup(args);
 +
 +        e = av_dict_get(ost->opts, "threads", NULL, 0);
 +        if (e)
 +            av_opt_set(fg->graph, "threads", e->value, 0);
 +    }
 +
 +    if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
 +        return ret;
 +
 +    if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
 +        av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
 +               "exactly one input and output.\n", graph_desc);
 +        return AVERROR(EINVAL);
 +    }
 +
 +    for (cur = inputs; !simple && init && cur; cur = cur->next)
 +        init_input_filter(fg, cur);
 +
 +    for (cur = inputs, i = 0; cur; cur = cur->next, i++)
 +        if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
 +            return ret;
 +    avfilter_inout_free(&inputs);
 +
 +    if (!init || simple) {
 +        /* we already know the mappings between lavfi outputs and output streams,
 +         * so we can finish the setup */
 +        for (cur = outputs, i = 0; cur; cur = cur->next, i++)
 +            configure_output_filter(fg, fg->outputs[i], cur);
 +        avfilter_inout_free(&outputs);
 +
 +        if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
 +            return ret;
 +    } else {
 +        /* wait until output mappings are processed */
 +        for (cur = outputs; cur;) {
 +            GROW_ARRAY(fg->outputs, fg->nb_outputs);
 +            if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
 +                exit_program(1);
 +            fg->outputs[fg->nb_outputs - 1]->graph   = fg;
 +            fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
 +            cur = cur->next;
 +            fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
 +        }
 +    }
 +
 +    fg->reconfiguration = 1;
 +    return 0;
 +}
 +
 +int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
 +{
 +    int i;
 +    for (i = 0; i < fg->nb_inputs; i++)
 +        if (fg->inputs[i]->ist == ist)
 +            return 1;
 +    return 0;
 +}
 +
diff --cc ffplay.c
index 137837c,0000000..c671383
mode 100644,000000..100644
--- /dev/null
+++ b/ffplay.c
@@@ -1,3622 -1,0 +1,3624 @@@
 +/*
 + * Copyright (c) 2003 Fabrice Bellard
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +/**
 + * @file
 + * simple media player based on the FFmpeg libraries
 + */
 +
 +#include "config.h"
 +#include <inttypes.h>
 +#include <math.h>
 +#include <limits.h>
 +#include <signal.h>
++#include <stdint.h>
++
 +#include "libavutil/avstring.h"
 +#include "libavutil/colorspace.h"
 +#include "libavutil/mathematics.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/imgutils.h"
 +#include "libavutil/dict.h"
 +#include "libavutil/parseutils.h"
 +#include "libavutil/samplefmt.h"
 +#include "libavutil/avassert.h"
 +#include "libavutil/time.h"
 +#include "libavformat/avformat.h"
 +#include "libavdevice/avdevice.h"
 +#include "libswscale/swscale.h"
 +#include "libavutil/opt.h"
 +#include "libavcodec/avfft.h"
 +#include "libswresample/swresample.h"
 +
 +#if CONFIG_AVFILTER
 +# include "libavfilter/avcodec.h"
 +# include "libavfilter/avfilter.h"
 +# include "libavfilter/buffersink.h"
 +# include "libavfilter/buffersrc.h"
 +#endif
 +
 +#include <SDL.h>
 +#include <SDL_thread.h>
 +
 +#include "cmdutils.h"
 +
 +#include <assert.h>
 +
 +const char program_name[] = "ffplay";
 +const int program_birth_year = 2003;
 +
 +#define MAX_QUEUE_SIZE (15 * 1024 * 1024)
 +#define MIN_FRAMES 5
 +
 +/* SDL audio buffer size, in samples. Should be small to have precise
 +   A/V sync as SDL does not have hardware buffer fullness info. */
 +#define SDL_AUDIO_BUFFER_SIZE 1024
 +
 +/* no AV sync correction is done if below the minimum AV sync threshold */
 +#define AV_SYNC_THRESHOLD_MIN 0.01
 +/* AV sync correction is done if above the maximum AV sync threshold */
 +#define AV_SYNC_THRESHOLD_MAX 0.1
 +/* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
 +#define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
 +/* no AV correction is done if too big error */
 +#define AV_NOSYNC_THRESHOLD 10.0
 +
 +/* maximum audio speed change to get correct sync */
 +#define SAMPLE_CORRECTION_PERCENT_MAX 10
 +
 +/* external clock speed adjustment constants for realtime sources based on buffer fullness */
 +#define EXTERNAL_CLOCK_SPEED_MIN  0.900
 +#define EXTERNAL_CLOCK_SPEED_MAX  1.010
 +#define EXTERNAL_CLOCK_SPEED_STEP 0.001
 +
 +/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
 +#define AUDIO_DIFF_AVG_NB   20
 +
 +/* polls for possible required screen refresh at least this often, should be less than 1/fps */
 +#define REFRESH_RATE 0.01
 +
 +/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
 +/* TODO: We assume that a decoded and resampled frame fits into this buffer */
 +#define SAMPLE_ARRAY_SIZE (8 * 65536)
 +
 +#define CURSOR_HIDE_DELAY 1000000
 +
 +static int64_t sws_flags = SWS_BICUBIC;
 +
 +typedef struct MyAVPacketList {
 +    AVPacket pkt;
 +    struct MyAVPacketList *next;
 +    int serial;
 +} MyAVPacketList;
 +
 +typedef struct PacketQueue {
 +    MyAVPacketList *first_pkt, *last_pkt;
 +    int nb_packets;
 +    int size;
 +    int abort_request;
 +    int serial;
 +    SDL_mutex *mutex;
 +    SDL_cond *cond;
 +} PacketQueue;
 +
 +#define VIDEO_PICTURE_QUEUE_SIZE 3
 +#define SUBPICTURE_QUEUE_SIZE 4
 +
 +typedef struct VideoPicture {
 +    double pts;             // presentation timestamp for this picture
 +    double duration;        // estimated duration based on frame rate
 +    int64_t pos;            // byte position in file
 +    SDL_Overlay *bmp;
 +    int width, height; /* source height & width */
 +    int allocated;
 +    int reallocate;
 +    int serial;
 +
 +    AVRational sar;
 +} VideoPicture;
 +
 +typedef struct SubPicture {
 +    double pts; /* presentation time stamp for this picture */
 +    AVSubtitle sub;
 +    int serial;
 +} SubPicture;
 +
 +typedef struct AudioParams {
 +    int freq;
 +    int channels;
 +    int64_t channel_layout;
 +    enum AVSampleFormat fmt;
 +} AudioParams;
 +
 +typedef struct Clock {
 +    double pts;           /* clock base */
 +    double pts_drift;     /* clock base minus time at which we updated the clock */
 +    double last_updated;
 +    double speed;
 +    int serial;           /* clock is based on a packet with this serial */
 +    int paused;
 +    int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
 +} Clock;
 +
 +enum {
 +    AV_SYNC_AUDIO_MASTER, /* default choice */
 +    AV_SYNC_VIDEO_MASTER,
 +    AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
 +};
 +
 +typedef struct VideoState {
 +    SDL_Thread *read_tid;
 +    SDL_Thread *video_tid;
 +    AVInputFormat *iformat;
 +    int no_background;
 +    int abort_request;
 +    int force_refresh;
 +    int paused;
 +    int last_paused;
 +    int queue_attachments_req;
 +    int seek_req;
 +    int seek_flags;
 +    int64_t seek_pos;
 +    int64_t seek_rel;
 +    int read_pause_return;
 +    AVFormatContext *ic;
 +    int realtime;
 +    int audio_finished;
 +    int video_finished;
 +
 +    Clock audclk;
 +    Clock vidclk;
 +    Clock extclk;
 +
 +    int audio_stream;
 +
 +    int av_sync_type;
 +
 +    double audio_clock;
 +    int audio_clock_serial;
 +    double audio_diff_cum; /* used for AV difference average computation */
 +    double audio_diff_avg_coef;
 +    double audio_diff_threshold;
 +    int audio_diff_avg_count;
 +    AVStream *audio_st;
 +    PacketQueue audioq;
 +    int audio_hw_buf_size;
 +    uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
 +    uint8_t *audio_buf;
 +    uint8_t *audio_buf1;
 +    unsigned int audio_buf_size; /* in bytes */
 +    unsigned int audio_buf1_size;
 +    int audio_buf_index; /* in bytes */
 +    int audio_write_buf_size;
 +    int audio_buf_frames_pending;
 +    AVPacket audio_pkt_temp;
 +    AVPacket audio_pkt;
 +    int audio_pkt_temp_serial;
 +    int audio_last_serial;
 +    struct AudioParams audio_src;
 +#if CONFIG_AVFILTER
 +    struct AudioParams audio_filter_src;
 +#endif
 +    struct AudioParams audio_tgt;
 +    struct SwrContext *swr_ctx;
 +    int frame_drops_early;
 +    int frame_drops_late;
 +    AVFrame *frame;
 +    int64_t audio_frame_next_pts;
 +
 +    enum ShowMode {
 +        SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
 +    } show_mode;
 +    int16_t sample_array[SAMPLE_ARRAY_SIZE];
 +    int sample_array_index;
 +    int last_i_start;
 +    RDFTContext *rdft;
 +    int rdft_bits;
 +    FFTSample *rdft_data;
 +    int xpos;
 +    double last_vis_time;
 +
 +    SDL_Thread *subtitle_tid;
 +    int subtitle_stream;
 +    AVStream *subtitle_st;
 +    PacketQueue subtitleq;
 +    SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
 +    int subpq_size, subpq_rindex, subpq_windex;
 +    SDL_mutex *subpq_mutex;
 +    SDL_cond *subpq_cond;
 +
 +    double frame_timer;
 +    double frame_last_returned_time;
 +    double frame_last_filter_delay;
 +    int video_stream;
 +    AVStream *video_st;
 +    PacketQueue videoq;
 +    int64_t video_current_pos;      // current displayed file pos
 +    double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
 +    VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
 +    int pictq_size, pictq_rindex, pictq_windex;
 +    SDL_mutex *pictq_mutex;
 +    SDL_cond *pictq_cond;
 +#if !CONFIG_AVFILTER
 +    struct SwsContext *img_convert_ctx;
 +#endif
 +    SDL_Rect last_display_rect;
 +
 +    char filename[1024];
 +    int width, height, xleft, ytop;
 +    int step;
 +
 +#if CONFIG_AVFILTER
 +    AVFilterContext *in_video_filter;   // the first filter in the video chain
 +    AVFilterContext *out_video_filter;  // the last filter in the video chain
 +    AVFilterContext *in_audio_filter;   // the first filter in the audio chain
 +    AVFilterContext *out_audio_filter;  // the last filter in the audio chain
 +    AVFilterGraph *agraph;              // audio filter graph
 +#endif
 +
 +    int last_video_stream, last_audio_stream, last_subtitle_stream;
 +
 +    SDL_cond *continue_read_thread;
 +} VideoState;
 +
 +/* options specified by the user */
 +static AVInputFormat *file_iformat;
 +static const char *input_filename;
 +static const char *window_title;
 +static int fs_screen_width;
 +static int fs_screen_height;
 +static int default_width  = 640;
 +static int default_height = 480;
 +static int screen_width  = 0;
 +static int screen_height = 0;
 +static int audio_disable;
 +static int video_disable;
 +static int subtitle_disable;
 +static int wanted_stream[AVMEDIA_TYPE_NB] = {
 +    [AVMEDIA_TYPE_AUDIO]    = -1,
 +    [AVMEDIA_TYPE_VIDEO]    = -1,
 +    [AVMEDIA_TYPE_SUBTITLE] = -1,
 +};
 +static int seek_by_bytes = -1;
 +static int display_disable;
 +static int show_status = 1;
 +static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 +static int64_t start_time = AV_NOPTS_VALUE;
 +static int64_t duration = AV_NOPTS_VALUE;
 +static int workaround_bugs = 1;
 +static int fast = 0;
 +static int genpts = 0;
 +static int lowres = 0;
 +static int error_concealment = 3;
 +static int decoder_reorder_pts = -1;
 +static int autoexit;
 +static int exit_on_keydown;
 +static int exit_on_mousedown;
 +static int loop = 1;
 +static int framedrop = -1;
 +static int infinite_buffer = -1;
 +static enum ShowMode show_mode = SHOW_MODE_NONE;
 +static const char *audio_codec_name;
 +static const char *subtitle_codec_name;
 +static const char *video_codec_name;
 +double rdftspeed = 0.02;
 +static int64_t cursor_last_shown;
 +static int cursor_hidden = 0;
 +#if CONFIG_AVFILTER
 +static char *vfilters = NULL;
 +static char *afilters = NULL;
 +#endif
 +
 +/* current context */
 +static int is_full_screen;
 +static int64_t audio_callback_time;
 +
 +static AVPacket flush_pkt;
 +
 +#define FF_ALLOC_EVENT   (SDL_USEREVENT)
 +#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 +
 +static SDL_Surface *screen;
 +
 +static inline
 +int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
 +                   enum AVSampleFormat fmt2, int64_t channel_count2)
 +{
 +    /* If channel count == 1, planar and non-planar formats are the same */
 +    if (channel_count1 == 1 && channel_count2 == 1)
 +        return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
 +    else
 +        return channel_count1 != channel_count2 || fmt1 != fmt2;
 +}
 +
 +static inline
 +int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
 +{
 +    if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
 +        return channel_layout;
 +    else
 +        return 0;
 +}
 +
 +static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
 +
 +static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
 +{
 +    MyAVPacketList *pkt1;
 +
 +    if (q->abort_request)
 +       return -1;
 +
 +    pkt1 = av_malloc(sizeof(MyAVPacketList));
 +    if (!pkt1)
 +        return -1;
 +    pkt1->pkt = *pkt;
 +    pkt1->next = NULL;
 +    if (pkt == &flush_pkt)
 +        q->serial++;
 +    pkt1->serial = q->serial;
 +
 +    if (!q->last_pkt)
 +        q->first_pkt = pkt1;
 +    else
 +        q->last_pkt->next = pkt1;
 +    q->last_pkt = pkt1;
 +    q->nb_packets++;
 +    q->size += pkt1->pkt.size + sizeof(*pkt1);
 +    /* XXX: should duplicate packet data in DV case */
 +    SDL_CondSignal(q->cond);
 +    return 0;
 +}
 +
 +static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 +{
 +    int ret;
 +
 +    /* duplicate the packet */
 +    if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
 +        return -1;
 +
 +    SDL_LockMutex(q->mutex);
 +    ret = packet_queue_put_private(q, pkt);
 +    SDL_UnlockMutex(q->mutex);
 +
 +    if (pkt != &flush_pkt && ret < 0)
 +        av_free_packet(pkt);
 +
 +    return ret;
 +}
 +
 +static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
 +{
 +    AVPacket pkt1, *pkt = &pkt1;
 +    av_init_packet(pkt);
 +    pkt->data = NULL;
 +    pkt->size = 0;
 +    pkt->stream_index = stream_index;
 +    return packet_queue_put(q, pkt);
 +}
 +
 +/* packet queue handling */
 +static void packet_queue_init(PacketQueue *q)
 +{
 +    memset(q, 0, sizeof(PacketQueue));
 +    q->mutex = SDL_CreateMutex();
 +    q->cond = SDL_CreateCond();
 +    q->abort_request = 1;
 +}
 +
 +static void packet_queue_flush(PacketQueue *q)
 +{
 +    MyAVPacketList *pkt, *pkt1;
 +
 +    SDL_LockMutex(q->mutex);
 +    for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
 +        pkt1 = pkt->next;
 +        av_free_packet(&pkt->pkt);
 +        av_freep(&pkt);
 +    }
 +    q->last_pkt = NULL;
 +    q->first_pkt = NULL;
 +    q->nb_packets = 0;
 +    q->size = 0;
 +    SDL_UnlockMutex(q->mutex);
 +}
 +
 +static void packet_queue_destroy(PacketQueue *q)
 +{
 +    packet_queue_flush(q);
 +    SDL_DestroyMutex(q->mutex);
 +    SDL_DestroyCond(q->cond);
 +}
 +
 +static void packet_queue_abort(PacketQueue *q)
 +{
 +    SDL_LockMutex(q->mutex);
 +
 +    q->abort_request = 1;
 +
 +    SDL_CondSignal(q->cond);
 +
 +    SDL_UnlockMutex(q->mutex);
 +}
 +
 +static void packet_queue_start(PacketQueue *q)
 +{
 +    SDL_LockMutex(q->mutex);
 +    q->abort_request = 0;
 +    packet_queue_put_private(q, &flush_pkt);
 +    SDL_UnlockMutex(q->mutex);
 +}
 +
 +/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 +static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
 +{
 +    MyAVPacketList *pkt1;
 +    int ret;
 +
 +    SDL_LockMutex(q->mutex);
 +
 +    for (;;) {
 +        if (q->abort_request) {
 +            ret = -1;
 +            break;
 +        }
 +
 +        pkt1 = q->first_pkt;
 +        if (pkt1) {
 +            q->first_pkt = pkt1->next;
 +            if (!q->first_pkt)
 +                q->last_pkt = NULL;
 +            q->nb_packets--;
 +            q->size -= pkt1->pkt.size + sizeof(*pkt1);
 +            *pkt = pkt1->pkt;
 +            if (serial)
 +                *serial = pkt1->serial;
 +            av_free(pkt1);
 +            ret = 1;
 +            break;
 +        } else if (!block) {
 +            ret = 0;
 +            break;
 +        } else {
 +            SDL_CondWait(q->cond, q->mutex);
 +        }
 +    }
 +    SDL_UnlockMutex(q->mutex);
 +    return ret;
 +}
 +
 +static inline void fill_rectangle(SDL_Surface *screen,
 +                                  int x, int y, int w, int h, int color, int update)
 +{
 +    SDL_Rect rect;
 +    rect.x = x;
 +    rect.y = y;
 +    rect.w = w;
 +    rect.h = h;
 +    SDL_FillRect(screen, &rect, color);
 +    if (update && w > 0 && h > 0)
 +        SDL_UpdateRect(screen, x, y, w, h);
 +}
 +
 +/* draw only the border of a rectangle */
 +static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
 +{
 +    int w1, w2, h1, h2;
 +
 +    /* fill the background */
 +    w1 = x;
 +    if (w1 < 0)
 +        w1 = 0;
 +    w2 = width - (x + w);
 +    if (w2 < 0)
 +        w2 = 0;
 +    h1 = y;
 +    if (h1 < 0)
 +        h1 = 0;
 +    h2 = height - (y + h);
 +    if (h2 < 0)
 +        h2 = 0;
 +    fill_rectangle(screen,
 +                   xleft, ytop,
 +                   w1, height,
 +                   color, update);
 +    fill_rectangle(screen,
 +                   xleft + width - w2, ytop,
 +                   w2, height,
 +                   color, update);
 +    fill_rectangle(screen,
 +                   xleft + w1, ytop,
 +                   width - w1 - w2, h1,
 +                   color, update);
 +    fill_rectangle(screen,
 +                   xleft + w1, ytop + height - h2,
 +                   width - w1 - w2, h2,
 +                   color, update);
 +}
 +
 +#define ALPHA_BLEND(a, oldp, newp, s)\
 +((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
 +
 +#define RGBA_IN(r, g, b, a, s)\
 +{\
 +    unsigned int v = ((const uint32_t *)(s))[0];\
 +    a = (v >> 24) & 0xff;\
 +    r = (v >> 16) & 0xff;\
 +    g = (v >> 8) & 0xff;\
 +    b = v & 0xff;\
 +}
 +
 +#define YUVA_IN(y, u, v, a, s, pal)\
 +{\
 +    unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
 +    a = (val >> 24) & 0xff;\
 +    y = (val >> 16) & 0xff;\
 +    u = (val >> 8) & 0xff;\
 +    v = val & 0xff;\
 +}
 +
 +#define YUVA_OUT(d, y, u, v, a)\
 +{\
 +    ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
 +}
 +
 +
 +#define BPP 1
 +
 +static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
 +{
 +    int wrap, wrap3, width2, skip2;
 +    int y, u, v, a, u1, v1, a1, w, h;
 +    uint8_t *lum, *cb, *cr;
 +    const uint8_t *p;
 +    const uint32_t *pal;
 +    int dstx, dsty, dstw, dsth;
 +
 +    dstw = av_clip(rect->w, 0, imgw);
 +    dsth = av_clip(rect->h, 0, imgh);
 +    dstx = av_clip(rect->x, 0, imgw - dstw);
 +    dsty = av_clip(rect->y, 0, imgh - dsth);
 +    lum = dst->data[0] + dsty * dst->linesize[0];
 +    cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
 +    cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
 +
 +    width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
 +    skip2 = dstx >> 1;
 +    wrap = dst->linesize[0];
 +    wrap3 = rect->pict.linesize[0];
 +    p = rect->pict.data[0];
 +    pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
 +
 +    if (dsty & 1) {
 +        lum += dstx;
 +        cb += skip2;
 +        cr += skip2;
 +
 +        if (dstx & 1) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +            cb++;
 +            cr++;
 +            lum++;
 +            p += BPP;
 +        }
 +        for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 +            cb++;
 +            cr++;
 +            p += 2 * BPP;
 +            lum += 2;
 +        }
 +        if (w) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +            p++;
 +            lum++;
 +        }
 +        p += wrap3 - dstw * BPP;
 +        lum += wrap - dstw - dstx;
 +        cb += dst->linesize[1] - width2 - skip2;
 +        cr += dst->linesize[2] - width2 - skip2;
 +    }
 +    for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
 +        lum += dstx;
 +        cb += skip2;
 +        cr += skip2;
 +
 +        if (dstx & 1) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            p += wrap3;
 +            lum += wrap;
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 +            cb++;
 +            cr++;
 +            p += -wrap3 + BPP;
 +            lum += -wrap + 1;
 +        }
 +        for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +            p += wrap3;
 +            lum += wrap;
 +
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
 +
 +            cb++;
 +            cr++;
 +            p += -wrap3 + 2 * BPP;
 +            lum += -wrap + 2;
 +        }
 +        if (w) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            p += wrap3;
 +            lum += wrap;
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 +            cb++;
 +            cr++;
 +            p += -wrap3 + BPP;
 +            lum += -wrap + 1;
 +        }
 +        p += wrap3 + (wrap3 - dstw * BPP);
 +        lum += wrap + (wrap - dstw - dstx);
 +        cb += dst->linesize[1] - width2 - skip2;
 +        cr += dst->linesize[2] - width2 - skip2;
 +    }
 +    /* handle odd height */
 +    if (h) {
 +        lum += dstx;
 +        cb += skip2;
 +        cr += skip2;
 +
 +        if (dstx & 1) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +            cb++;
 +            cr++;
 +            lum++;
 +            p += BPP;
 +        }
 +        for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
 +            cb++;
 +            cr++;
 +            p += 2 * BPP;
 +            lum += 2;
 +        }
 +        if (w) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +        }
 +    }
 +}
 +
 +static void free_picture(VideoPicture *vp)
 +{
 +     if (vp->bmp) {
 +         SDL_FreeYUVOverlay(vp->bmp);
 +         vp->bmp = NULL;
 +     }
 +}
 +
 +static void free_subpicture(SubPicture *sp)
 +{
 +    avsubtitle_free(&sp->sub);
 +}
 +
 +static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
 +{
 +    float aspect_ratio;
 +    int width, height, x, y;
 +
 +    if (vp->sar.num == 0)
 +        aspect_ratio = 0;
 +    else
 +        aspect_ratio = av_q2d(vp->sar);
 +
 +    if (aspect_ratio <= 0.0)
 +        aspect_ratio = 1.0;
 +    aspect_ratio *= (float)vp->width / (float)vp->height;
 +
 +    /* XXX: we suppose the screen has a 1.0 pixel ratio */
 +    height = scr_height;
 +    width = ((int)rint(height * aspect_ratio)) & ~1;
 +    if (width > scr_width) {
 +        width = scr_width;
 +        height = ((int)rint(width / aspect_ratio)) & ~1;
 +    }
 +    x = (scr_width - width) / 2;
 +    y = (scr_height - height) / 2;
 +    rect->x = scr_xleft + x;
 +    rect->y = scr_ytop  + y;
 +    rect->w = FFMAX(width,  1);
 +    rect->h = FFMAX(height, 1);
 +}
 +
 +static void video_image_display(VideoState *is)
 +{
 +    VideoPicture *vp;
 +    SubPicture *sp;
 +    AVPicture pict;
 +    SDL_Rect rect;
 +    int i;
 +
 +    vp = &is->pictq[is->pictq_rindex];
 +    if (vp->bmp) {
 +        if (is->subtitle_st) {
 +            if (is->subpq_size > 0) {
 +                sp = &is->subpq[is->subpq_rindex];
 +
 +                if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
 +                    SDL_LockYUVOverlay (vp->bmp);
 +
 +                    pict.data[0] = vp->bmp->pixels[0];
 +                    pict.data[1] = vp->bmp->pixels[2];
 +                    pict.data[2] = vp->bmp->pixels[1];
 +
 +                    pict.linesize[0] = vp->bmp->pitches[0];
 +                    pict.linesize[1] = vp->bmp->pitches[2];
 +                    pict.linesize[2] = vp->bmp->pitches[1];
 +
 +                    for (i = 0; i < sp->sub.num_rects; i++)
 +                        blend_subrect(&pict, sp->sub.rects[i],
 +                                      vp->bmp->w, vp->bmp->h);
 +
 +                    SDL_UnlockYUVOverlay (vp->bmp);
 +                }
 +            }
 +        }
 +
 +        calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
 +
 +        SDL_DisplayYUVOverlay(vp->bmp, &rect);
 +
 +        if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
 +            int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 +            fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
 +            is->last_display_rect = rect;
 +        }
 +    }
 +}
 +
 +static inline int compute_mod(int a, int b)
 +{
 +    return a < 0 ? a%b + b : a%b;
 +}
 +
 +static void video_audio_display(VideoState *s)
 +{
 +    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
 +    int ch, channels, h, h2, bgcolor, fgcolor;
 +    int64_t time_diff;
 +    int rdft_bits, nb_freq;
 +
 +    for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
 +        ;
 +    nb_freq = 1 << (rdft_bits - 1);
 +
 +    /* compute display index : center on currently output samples */
 +    channels = s->audio_tgt.channels;
 +    nb_display_channels = channels;
 +    if (!s->paused) {
 +        int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
 +        n = 2 * channels;
 +        delay = s->audio_write_buf_size;
 +        delay /= n;
 +
 +        /* to be more precise, we take into account the time spent since
 +           the last buffer computation */
 +        if (audio_callback_time) {
 +            time_diff = av_gettime() - audio_callback_time;
 +            delay -= (time_diff * s->audio_tgt.freq) / 1000000;
 +        }
 +
 +        delay += 2 * data_used;
 +        if (delay < data_used)
 +            delay = data_used;
 +
 +        i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
 +        if (s->show_mode == SHOW_MODE_WAVES) {
 +            h = INT_MIN;
 +            for (i = 0; i < 1000; i += channels) {
 +                int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
 +                int a = s->sample_array[idx];
 +                int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
 +                int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
 +                int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
 +                int score = a - d;
 +                if (h < score && (b ^ c) < 0) {
 +                    h = score;
 +                    i_start = idx;
 +                }
 +            }
 +        }
 +
 +        s->last_i_start = i_start;
 +    } else {
 +        i_start = s->last_i_start;
 +    }
 +
 +    bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 +    if (s->show_mode == SHOW_MODE_WAVES) {
 +        fill_rectangle(screen,
 +                       s->xleft, s->ytop, s->width, s->height,
 +                       bgcolor, 0);
 +
 +        fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 +
 +        /* total height for one channel */
 +        h = s->height / nb_display_channels;
 +        /* graph height / 2 */
 +        h2 = (h * 9) / 20;
 +        for (ch = 0; ch < nb_display_channels; ch++) {
 +            i = i_start + ch;
 +            y1 = s->ytop + ch * h + (h / 2); /* position of center line */
 +            for (x = 0; x < s->width; x++) {
 +                y = (s->sample_array[i] * h2) >> 15;
 +                if (y < 0) {
 +                    y = -y;
 +                    ys = y1 - y;
 +                } else {
 +                    ys = y1;
 +                }
 +                fill_rectangle(screen,
 +                               s->xleft + x, ys, 1, y,
 +                               fgcolor, 0);
 +                i += channels;
 +                if (i >= SAMPLE_ARRAY_SIZE)
 +                    i -= SAMPLE_ARRAY_SIZE;
 +            }
 +        }
 +
 +        fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 +
 +        for (ch = 1; ch < nb_display_channels; ch++) {
 +            y = s->ytop + ch * h;
 +            fill_rectangle(screen,
 +                           s->xleft, y, s->width, 1,
 +                           fgcolor, 0);
 +        }
 +        SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
 +    } else {
 +        nb_display_channels= FFMIN(nb_display_channels, 2);
 +        if (rdft_bits != s->rdft_bits) {
 +            av_rdft_end(s->rdft);
 +            av_free(s->rdft_data);
 +            s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
 +            s->rdft_bits = rdft_bits;
 +            s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
 +        }
 +        {
 +            FFTSample *data[2];
 +            for (ch = 0; ch < nb_display_channels; ch++) {
 +                data[ch] = s->rdft_data + 2 * nb_freq * ch;
 +                i = i_start + ch;
 +                for (x = 0; x < 2 * nb_freq; x++) {
 +                    double w = (x-nb_freq) * (1.0 / nb_freq);
 +                    data[ch][x] = s->sample_array[i] * (1.0 - w * w);
 +                    i += channels;
 +                    if (i >= SAMPLE_ARRAY_SIZE)
 +                        i -= SAMPLE_ARRAY_SIZE;
 +                }
 +                av_rdft_calc(s->rdft, data[ch]);
 +            }
 +            /* Least efficient way to do this, we should of course
 +             * directly access it but it is more than fast enough. */
 +            for (y = 0; y < s->height; y++) {
 +                double w = 1 / sqrt(nb_freq);
 +                int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
 +                int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
 +                       + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
 +                a = FFMIN(a, 255);
 +                b = FFMIN(b, 255);
 +                fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
 +
 +                fill_rectangle(screen,
 +                            s->xpos, s->height-y, 1, 1,
 +                            fgcolor, 0);
 +            }
 +        }
 +        SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
 +        if (!s->paused)
 +            s->xpos++;
 +        if (s->xpos >= s->width)
 +            s->xpos= s->xleft;
 +    }
 +}
 +
 +static void stream_close(VideoState *is)
 +{
 +    int i;
 +    /* XXX: use a special url_shutdown call to abort parse cleanly */
 +    is->abort_request = 1;
 +    SDL_WaitThread(is->read_tid, NULL);
 +    packet_queue_destroy(&is->videoq);
 +    packet_queue_destroy(&is->audioq);
 +    packet_queue_destroy(&is->subtitleq);
 +
 +    /* free all pictures */
 +    for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
 +        free_picture(&is->pictq[i]);
 +    for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
 +        free_subpicture(&is->subpq[i]);
 +    SDL_DestroyMutex(is->pictq_mutex);
 +    SDL_DestroyCond(is->pictq_cond);
 +    SDL_DestroyMutex(is->subpq_mutex);
 +    SDL_DestroyCond(is->subpq_cond);
 +    SDL_DestroyCond(is->continue_read_thread);
 +#if !CONFIG_AVFILTER
 +    sws_freeContext(is->img_convert_ctx);
 +#endif
 +    av_free(is);
 +}
 +
 +static void do_exit(VideoState *is)
 +{
 +    if (is) {
 +        stream_close(is);
 +    }
 +    av_lockmgr_register(NULL);
 +    uninit_opts();
 +#if CONFIG_AVFILTER
 +    av_freep(&vfilters);
 +#endif
 +    avformat_network_deinit();
 +    if (show_status)
 +        printf("\n");
 +    SDL_Quit();
 +    av_log(NULL, AV_LOG_QUIET, "%s", "");
 +    exit(0);
 +}
 +
 +static void sigterm_handler(int sig)
 +{
 +    exit(123);
 +}
 +
 +static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
 +{
 +    int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 +    int w,h;
 +    SDL_Rect rect;
 +
 +    if (is_full_screen) flags |= SDL_FULLSCREEN;
 +    else                flags |= SDL_RESIZABLE;
 +
 +    if (vp && vp->width) {
 +        calculate_display_rect(&rect, 0, 0, INT_MAX, vp->height, vp);
 +        default_width  = rect.w;
 +        default_height = rect.h;
 +    }
 +
 +    if (is_full_screen && fs_screen_width) {
 +        w = fs_screen_width;
 +        h = fs_screen_height;
 +    } else if (!is_full_screen && screen_width) {
 +        w = screen_width;
 +        h = screen_height;
 +    } else {
 +        w = default_width;
 +        h = default_height;
 +    }
 +    w = FFMIN(16383, w);
 +    if (screen && is->width == screen->w && screen->w == w
 +       && is->height== screen->h && screen->h == h && !force_set_video_mode)
 +        return 0;
 +    screen = SDL_SetVideoMode(w, h, 0, flags);
 +    if (!screen) {
 +        av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
 +        do_exit(is);
 +    }
 +    if (!window_title)
 +        window_title = input_filename;
 +    SDL_WM_SetCaption(window_title, window_title);
 +
 +    is->width  = screen->w;
 +    is->height = screen->h;
 +
 +    return 0;
 +}
 +
 +/* display the current picture, if any */
 +static void video_display(VideoState *is)
 +{
 +    if (!screen)
 +        video_open(is, 0, NULL);
 +    if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
 +        video_audio_display(is);
 +    else if (is->video_st)
 +        video_image_display(is);
 +}
 +
 +static double get_clock(Clock *c)
 +{
 +    if (*c->queue_serial != c->serial)
 +        return NAN;
 +    if (c->paused) {
 +        return c->pts;
 +    } else {
 +        double time = av_gettime() / 1000000.0;
 +        return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
 +    }
 +}
 +
 +static void set_clock_at(Clock *c, double pts, int serial, double time)
 +{
 +    c->pts = pts;
 +    c->last_updated = time;
 +    c->pts_drift = c->pts - time;
 +    c->serial = serial;
 +}
 +
 +static void set_clock(Clock *c, double pts, int serial)
 +{
 +    double time = av_gettime() / 1000000.0;
 +    set_clock_at(c, pts, serial, time);
 +}
 +
 +static void set_clock_speed(Clock *c, double speed)
 +{
 +    set_clock(c, get_clock(c), c->serial);
 +    c->speed = speed;
 +}
 +
 +static void init_clock(Clock *c, int *queue_serial)
 +{
 +    c->speed = 1.0;
 +    c->paused = 0;
 +    c->queue_serial = queue_serial;
 +    set_clock(c, NAN, -1);
 +}
 +
 +static void sync_clock_to_slave(Clock *c, Clock *slave)
 +{
 +    double clock = get_clock(c);
 +    double slave_clock = get_clock(slave);
 +    if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
 +        set_clock(c, slave_clock, slave->serial);
 +}
 +
 +static int get_master_sync_type(VideoState *is) {
 +    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
 +        if (is->video_st)
 +            return AV_SYNC_VIDEO_MASTER;
 +        else
 +            return AV_SYNC_AUDIO_MASTER;
 +    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
 +        if (is->audio_st)
 +            return AV_SYNC_AUDIO_MASTER;
 +        else
 +            return AV_SYNC_EXTERNAL_CLOCK;
 +    } else {
 +        return AV_SYNC_EXTERNAL_CLOCK;
 +    }
 +}
 +
 +/* get the current master clock value */
 +static double get_master_clock(VideoState *is)
 +{
 +    double val;
 +
 +    switch (get_master_sync_type(is)) {
 +        case AV_SYNC_VIDEO_MASTER:
 +            val = get_clock(&is->vidclk);
 +            break;
 +        case AV_SYNC_AUDIO_MASTER:
 +            val = get_clock(&is->audclk);
 +            break;
 +        default:
 +            val = get_clock(&is->extclk);
 +            break;
 +    }
 +    return val;
 +}
 +
 +static void check_external_clock_speed(VideoState *is) {
 +   if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
 +       is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
 +       set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
 +   } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
 +              (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
 +       set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
 +   } else {
 +       double speed = is->extclk.speed;
 +       if (speed != 1.0)
 +           set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
 +   }
 +}
 +
 +/* seek in the stream */
 +static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
 +{
 +    if (!is->seek_req) {
 +        is->seek_pos = pos;
 +        is->seek_rel = rel;
 +        is->seek_flags &= ~AVSEEK_FLAG_BYTE;
 +        if (seek_by_bytes)
 +            is->seek_flags |= AVSEEK_FLAG_BYTE;
 +        is->seek_req = 1;
 +        SDL_CondSignal(is->continue_read_thread);
 +    }
 +}
 +
 +/* pause or resume the video */
 +static void stream_toggle_pause(VideoState *is)
 +{
 +    if (is->paused) {
 +        is->frame_timer += av_gettime() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
 +        if (is->read_pause_return != AVERROR(ENOSYS)) {
 +            is->vidclk.paused = 0;
 +        }
 +        set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
 +    }
 +    set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
 +    is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
 +}
 +
 +static void toggle_pause(VideoState *is)
 +{
 +    stream_toggle_pause(is);
 +    is->step = 0;
 +}
 +
 +static void step_to_next_frame(VideoState *is)
 +{
 +    /* if the stream is paused unpause it, then step */
 +    if (is->paused)
 +        stream_toggle_pause(is);
 +    is->step = 1;
 +}
 +
 +static double compute_target_delay(double delay, VideoState *is)
 +{
 +    double sync_threshold, diff;
 +
 +    /* update delay to follow master synchronisation source */
 +    if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
 +        /* if video is slave, we try to correct big delays by
 +           duplicating or deleting a frame */
 +        diff = get_clock(&is->vidclk) - get_master_clock(is);
 +
 +        /* skip or repeat frame. We take into account the
 +           delay to compute the threshold. I still don't know
 +           if it is the best guess */
 +        sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
 +        if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
 +            if (diff <= -sync_threshold)
 +                delay = FFMAX(0, delay + diff);
 +            else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
 +                delay = delay + diff;
 +            else if (diff >= sync_threshold)
 +                delay = 2 * delay;
 +        }
 +    }
 +
 +    av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
 +            delay, -diff);
 +
 +    return delay;
 +}
 +
 +static double vp_duration(VideoState *is, VideoPicture *vp, VideoPicture *nextvp) {
 +    if (vp->serial == nextvp->serial) {
 +        double duration = nextvp->pts - vp->pts;
 +        if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
 +            return vp->duration;
 +        else
 +            return duration;
 +    } else {
 +        return 0.0;
 +    }
 +}
 +
 +static void pictq_next_picture(VideoState *is) {
 +    /* update queue size and signal for next picture */
 +    if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
 +        is->pictq_rindex = 0;
 +
 +    SDL_LockMutex(is->pictq_mutex);
 +    is->pictq_size--;
 +    SDL_CondSignal(is->pictq_cond);
 +    SDL_UnlockMutex(is->pictq_mutex);
 +}
 +
 +static int pictq_prev_picture(VideoState *is) {
 +    VideoPicture *prevvp;
 +    int ret = 0;
 +    /* update queue size and signal for the previous picture */
 +    prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
 +    if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
 +        SDL_LockMutex(is->pictq_mutex);
 +        if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
 +            if (--is->pictq_rindex == -1)
 +                is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
 +            is->pictq_size++;
 +            ret = 1;
 +        }
 +        SDL_CondSignal(is->pictq_cond);
 +        SDL_UnlockMutex(is->pictq_mutex);
 +    }
 +    return ret;
 +}
 +
 +static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
 +    /* update current video pts */
 +    set_clock(&is->vidclk, pts, serial);
 +    sync_clock_to_slave(&is->extclk, &is->vidclk);
 +    is->video_current_pos = pos;
 +}
 +
 +/* called to display each frame */
 +static void video_refresh(void *opaque, double *remaining_time)
 +{
 +    VideoState *is = opaque;
 +    double time;
 +
 +    SubPicture *sp, *sp2;
 +
 +    if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
 +        check_external_clock_speed(is);
 +
 +    if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
 +        time = av_gettime() / 1000000.0;
 +        if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
 +            video_display(is);
 +            is->last_vis_time = time;
 +        }
 +        *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
 +    }
 +
 +    if (is->video_st) {
 +        int redisplay = 0;
 +        if (is->force_refresh)
 +            redisplay = pictq_prev_picture(is);
 +retry:
 +        if (is->pictq_size == 0) {
 +            // nothing to do, no picture to display in the queue
 +        } else {
 +            double last_duration, duration, delay;
 +            VideoPicture *vp, *lastvp;
 +
 +            /* dequeue the picture */
 +            vp = &is->pictq[is->pictq_rindex];
 +            lastvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
 +
 +            if (vp->serial != is->videoq.serial) {
 +                pictq_next_picture(is);
 +                redisplay = 0;
 +                goto retry;
 +            }
 +
 +            if (is->paused)
 +                goto display;
 +
 +            /* compute nominal last_duration */
 +            last_duration = vp_duration(is, lastvp, vp);
 +            if (redisplay)
 +                delay = 0.0;
 +            else
 +                delay = compute_target_delay(last_duration, is);
 +
 +            time= av_gettime()/1000000.0;
 +            if (time < is->frame_timer + delay && !redisplay) {
 +                *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
 +                return;
 +            }
 +
 +            is->frame_timer += delay;
 +            if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
 +                is->frame_timer = time;
 +
 +            SDL_LockMutex(is->pictq_mutex);
 +            if (!redisplay && !isnan(vp->pts))
 +                update_video_pts(is, vp->pts, vp->pos, vp->serial);
 +            SDL_UnlockMutex(is->pictq_mutex);
 +
 +            if (is->pictq_size > 1) {
 +                VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
 +                duration = vp_duration(is, vp, nextvp);
 +                if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
 +                    if (!redisplay)
 +                        is->frame_drops_late++;
 +                    pictq_next_picture(is);
 +                    redisplay = 0;
 +                    goto retry;
 +                }
 +            }
 +
 +            if (is->subtitle_st) {
 +                    while (is->subpq_size > 0) {
 +                        sp = &is->subpq[is->subpq_rindex];
 +
 +                        if (is->subpq_size > 1)
 +                            sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
 +                        else
 +                            sp2 = NULL;
 +
 +                        if (sp->serial != is->subtitleq.serial
 +                                || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
 +                                || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
 +                        {
 +                            free_subpicture(sp);
 +
 +                            /* update queue size and signal for next picture */
 +                            if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
 +                                is->subpq_rindex = 0;
 +
 +                            SDL_LockMutex(is->subpq_mutex);
 +                            is->subpq_size--;
 +                            SDL_CondSignal(is->subpq_cond);
 +                            SDL_UnlockMutex(is->subpq_mutex);
 +                        } else {
 +                            break;
 +                        }
 +                    }
 +            }
 +
 +display:
 +            /* display picture */
 +            if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
 +                video_display(is);
 +
 +            pictq_next_picture(is);
 +
 +            if (is->step && !is->paused)
 +                stream_toggle_pause(is);
 +        }
 +    }
 +    is->force_refresh = 0;
 +    if (show_status) {
 +        static int64_t last_time;
 +        int64_t cur_time;
 +        int aqsize, vqsize, sqsize;
 +        double av_diff;
 +
 +        cur_time = av_gettime();
 +        if (!last_time || (cur_time - last_time) >= 30000) {
 +            aqsize = 0;
 +            vqsize = 0;
 +            sqsize = 0;
 +            if (is->audio_st)
 +                aqsize = is->audioq.size;
 +            if (is->video_st)
 +                vqsize = is->videoq.size;
 +            if (is->subtitle_st)
 +                sqsize = is->subtitleq.size;
 +            av_diff = 0;
 +            if (is->audio_st && is->video_st)
 +                av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
 +            else if (is->video_st)
 +                av_diff = get_master_clock(is) - get_clock(&is->vidclk);
 +            else if (is->audio_st)
 +                av_diff = get_master_clock(is) - get_clock(&is->audclk);
 +            av_log(NULL, AV_LOG_INFO,
 +                   "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
 +                   get_master_clock(is),
 +                   (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
 +                   av_diff,
 +                   is->frame_drops_early + is->frame_drops_late,
 +                   aqsize / 1024,
 +                   vqsize / 1024,
 +                   sqsize,
 +                   is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
 +                   is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
 +            fflush(stdout);
 +            last_time = cur_time;
 +        }
 +    }
 +}
 +
 +/* allocate a picture (needs to do that in main thread to avoid
 +   potential locking problems */
 +static void alloc_picture(VideoState *is)
 +{
 +    VideoPicture *vp;
 +    int64_t bufferdiff;
 +
 +    vp = &is->pictq[is->pictq_windex];
 +
 +    free_picture(vp);
 +
 +    video_open(is, 0, vp);
 +
 +    vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
 +                                   SDL_YV12_OVERLAY,
 +                                   screen);
 +    bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
 +    if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
 +        /* SDL allocates a buffer smaller than requested if the video
 +         * overlay hardware is unable to support the requested size. */
 +        av_log(NULL, AV_LOG_FATAL,
 +               "Error: the video system does not support an image\n"
 +                        "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
 +                        "to reduce the image size.\n", vp->width, vp->height );
 +        do_exit(is);
 +    }
 +
 +    SDL_LockMutex(is->pictq_mutex);
 +    vp->allocated = 1;
 +    SDL_CondSignal(is->pictq_cond);
 +    SDL_UnlockMutex(is->pictq_mutex);
 +}
 +
 +static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
 +    int i, width, height;
 +    Uint8 *p, *maxp;
 +    for (i = 0; i < 3; i++) {
 +        width  = bmp->w;
 +        height = bmp->h;
 +        if (i > 0) {
 +            width  >>= 1;
 +            height >>= 1;
 +        }
 +        if (bmp->pitches[i] > width) {
 +            maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
 +            for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
 +                *(p+1) = *p;
 +        }
 +    }
 +}
 +
 +static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
 +{
 +    VideoPicture *vp;
 +
 +#if defined(DEBUG_SYNC) && 0
 +    printf("frame_type=%c pts=%0.3f\n",
 +           av_get_picture_type_char(src_frame->pict_type), pts);
 +#endif
 +
 +    /* wait until we have space to put a new picture */
 +    SDL_LockMutex(is->pictq_mutex);
 +
 +    /* keep the last already displayed picture in the queue */
 +    while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
 +           !is->videoq.abort_request) {
 +        SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +    }
 +    SDL_UnlockMutex(is->pictq_mutex);
 +
 +    if (is->videoq.abort_request)
 +        return -1;
 +
 +    vp = &is->pictq[is->pictq_windex];
 +
 +    vp->sar = src_frame->sample_aspect_ratio;
 +
 +    /* alloc or resize hardware picture buffer */
 +    if (!vp->bmp || vp->reallocate || !vp->allocated ||
 +        vp->width  != src_frame->width ||
 +        vp->height != src_frame->height) {
 +        SDL_Event event;
 +
 +        vp->allocated  = 0;
 +        vp->reallocate = 0;
 +        vp->width = src_frame->width;
 +        vp->height = src_frame->height;
 +
 +        /* the allocation must be done in the main thread to avoid
 +           locking problems. */
 +        event.type = FF_ALLOC_EVENT;
 +        event.user.data1 = is;
 +        SDL_PushEvent(&event);
 +
 +        /* wait until the picture is allocated */
 +        SDL_LockMutex(is->pictq_mutex);
 +        while (!vp->allocated && !is->videoq.abort_request) {
 +            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +        }
 +        /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
 +        if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
 +            while (!vp->allocated) {
 +                SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +            }
 +        }
 +        SDL_UnlockMutex(is->pictq_mutex);
 +
 +        if (is->videoq.abort_request)
 +            return -1;
 +    }
 +
 +    /* if the frame is not skipped, then display it */
 +    if (vp->bmp) {
 +        AVPicture pict = { { 0 } };
 +
 +        /* get a pointer on the bitmap */
 +        SDL_LockYUVOverlay (vp->bmp);
 +
 +        pict.data[0] = vp->bmp->pixels[0];
 +        pict.data[1] = vp->bmp->pixels[2];
 +        pict.data[2] = vp->bmp->pixels[1];
 +
 +        pict.linesize[0] = vp->bmp->pitches[0];
 +        pict.linesize[1] = vp->bmp->pitches[2];
 +        pict.linesize[2] = vp->bmp->pitches[1];
 +
 +#if CONFIG_AVFILTER
 +        // FIXME use direct rendering
 +        av_picture_copy(&pict, (AVPicture *)src_frame,
 +                        src_frame->format, vp->width, vp->height);
 +#else
 +        av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
 +        is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
 +            vp->width, vp->height, src_frame->format, vp->width, vp->height,
 +            AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
 +        if (is->img_convert_ctx == NULL) {
 +            av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
 +            exit(1);
 +        }
 +        sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
 +                  0, vp->height, pict.data, pict.linesize);
 +#endif
 +        /* workaround SDL PITCH_WORKAROUND */
 +        duplicate_right_border_pixels(vp->bmp);
 +        /* update the bitmap content */
 +        SDL_UnlockYUVOverlay(vp->bmp);
 +
 +        vp->pts = pts;
 +        vp->duration = duration;
 +        vp->pos = pos;
 +        vp->serial = serial;
 +
 +        /* now we can update the picture count */
 +        if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
 +            is->pictq_windex = 0;
 +        SDL_LockMutex(is->pictq_mutex);
 +        is->pictq_size++;
 +        SDL_UnlockMutex(is->pictq_mutex);
 +    }
 +    return 0;
 +}
 +
 +static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *serial)
 +{
 +    int got_picture;
 +
 +    if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
 +        return -1;
 +
 +    if (pkt->data == flush_pkt.data) {
 +        avcodec_flush_buffers(is->video_st->codec);
 +
 +        SDL_LockMutex(is->pictq_mutex);
 +        // Make sure there are no long delay timers (ideally we should just flush the queue but that's harder)
 +        while (is->pictq_size && !is->videoq.abort_request) {
 +            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +        }
 +        is->video_current_pos = -1;
 +        is->frame_timer = (double)av_gettime() / 1000000.0;
 +        SDL_UnlockMutex(is->pictq_mutex);
 +        return 0;
 +    }
 +
 +    if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
 +        return 0;
 +
 +    if (!got_picture && !pkt->data)
 +        is->video_finished = *serial;
 +
 +    if (got_picture) {
 +        int ret = 1;
 +        double dpts = NAN;
 +
 +        if (decoder_reorder_pts == -1) {
 +            frame->pts = av_frame_get_best_effort_timestamp(frame);
 +        } else if (decoder_reorder_pts) {
 +            frame->pts = frame->pkt_pts;
 +        } else {
 +            frame->pts = frame->pkt_dts;
 +        }
 +
 +        if (frame->pts != AV_NOPTS_VALUE)
 +            dpts = av_q2d(is->video_st->time_base) * frame->pts;
 +
 +        frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
 +
 +        if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
 +            if (frame->pts != AV_NOPTS_VALUE) {
 +                double diff = dpts - get_master_clock(is);
 +                if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
 +                    diff - is->frame_last_filter_delay < 0 &&
 +                    *serial == is->vidclk.serial &&
 +                    is->videoq.nb_packets) {
 +                    is->frame_drops_early++;
 +                    av_frame_unref(frame);
 +                    ret = 0;
 +                }
 +            }
 +        }
 +
 +        return ret;
 +    }
 +    return 0;
 +}
 +
 +#if CONFIG_AVFILTER
 +static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
 +                                 AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
 +{
 +    int ret;
 +    AVFilterInOut *outputs = NULL, *inputs = NULL;
 +
 +    if (filtergraph) {
 +        outputs = avfilter_inout_alloc();
 +        inputs  = avfilter_inout_alloc();
 +        if (!outputs || !inputs) {
 +            ret = AVERROR(ENOMEM);
 +            goto fail;
 +        }
 +
 +        outputs->name       = av_strdup("in");
 +        outputs->filter_ctx = source_ctx;
 +        outputs->pad_idx    = 0;
 +        outputs->next       = NULL;
 +
 +        inputs->name        = av_strdup("out");
 +        inputs->filter_ctx  = sink_ctx;
 +        inputs->pad_idx     = 0;
 +        inputs->next        = NULL;
 +
 +        if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
 +            goto fail;
 +    } else {
 +        if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
 +            goto fail;
 +    }
 +
 +    ret = avfilter_graph_config(graph, NULL);
 +fail:
 +    avfilter_inout_free(&outputs);
 +    avfilter_inout_free(&inputs);
 +    return ret;
 +}
 +
 +static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
 +{
 +    static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
 +    char sws_flags_str[128];
 +    char buffersrc_args[256];
 +    int ret;
 +    AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
 +    AVCodecContext *codec = is->video_st->codec;
 +    AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
 +
 +    av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
 +    snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
 +    graph->scale_sws_opts = av_strdup(sws_flags_str);
 +
 +    snprintf(buffersrc_args, sizeof(buffersrc_args),
 +             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
 +             frame->width, frame->height, frame->format,
 +             is->video_st->time_base.num, is->video_st->time_base.den,
 +             codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
 +    if (fr.num && fr.den)
 +        av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
 +
 +    if ((ret = avfilter_graph_create_filter(&filt_src,
 +                                            avfilter_get_by_name("buffer"),
 +                                            "ffplay_buffer", buffersrc_args, NULL,
 +                                            graph)) < 0)
 +        goto fail;
 +
 +    ret = avfilter_graph_create_filter(&filt_out,
 +                                       avfilter_get_by_name("buffersink"),
 +                                       "ffplay_buffersink", NULL, NULL, graph);
 +    if (ret < 0)
 +        goto fail;
 +
 +    if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
 +        goto fail;
 +
 +    /* SDL YUV code is not handling odd width/height for some driver
 +     * combinations, therefore we crop the picture to an even width/height. */
 +    if ((ret = avfilter_graph_create_filter(&filt_crop,
 +                                            avfilter_get_by_name("crop"),
 +                                            "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
 +        goto fail;
 +    if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
 +        goto fail;
 +
 +    if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
 +        goto fail;
 +
 +    is->in_video_filter  = filt_src;
 +    is->out_video_filter = filt_out;
 +
 +fail:
 +    return ret;
 +}
 +
 +static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
 +{
 +    static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
 +    int sample_rates[2] = { 0, -1 };
 +    int64_t channel_layouts[2] = { 0, -1 };
 +    int channels[2] = { 0, -1 };
 +    AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
 +    char aresample_swr_opts[512] = "";
 +    AVDictionaryEntry *e = NULL;
 +    char asrc_args[256];
 +    int ret;
 +
 +    avfilter_graph_free(&is->agraph);
 +    if (!(is->agraph = avfilter_graph_alloc()))
 +        return AVERROR(ENOMEM);
 +
 +    while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
 +        av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
 +    if (strlen(aresample_swr_opts))
 +        aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
 +    av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
 +
 +    ret = snprintf(asrc_args, sizeof(asrc_args),
 +                   "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
 +                   is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
 +                   is->audio_filter_src.channels,
 +                   1, is->audio_filter_src.freq);
 +    if (is->audio_filter_src.channel_layout)
 +        snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
 +                 ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
 +
 +    ret = avfilter_graph_create_filter(&filt_asrc,
 +                                       avfilter_get_by_name("abuffer"), "ffplay_abuffer",
 +                                       asrc_args, NULL, is->agraph);
 +    if (ret < 0)
 +        goto end;
 +
 +
 +    ret = avfilter_graph_create_filter(&filt_asink,
 +                                       avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
 +                                       NULL, NULL, is->agraph);
 +    if (ret < 0)
 +        goto end;
 +
 +    if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
 +        goto end;
 +    if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
 +        goto end;
 +
 +    if (force_output_format) {
 +        channel_layouts[0] = is->audio_tgt.channel_layout;
 +        channels       [0] = is->audio_tgt.channels;
 +        sample_rates   [0] = is->audio_tgt.freq;
 +        if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
 +            goto end;
 +        if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
 +            goto end;
 +        if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
 +            goto end;
 +        if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
 +            goto end;
 +    }
 +
 +
 +    if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
 +        goto end;
 +
 +    is->in_audio_filter  = filt_asrc;
 +    is->out_audio_filter = filt_asink;
 +
 +end:
 +    if (ret < 0)
 +        avfilter_graph_free(&is->agraph);
 +    return ret;
 +}
 +#endif  /* CONFIG_AVFILTER */
 +
 +static int video_thread(void *arg)
 +{
 +    AVPacket pkt = { 0 };
 +    VideoState *is = arg;
 +    AVFrame *frame = av_frame_alloc();
 +    double pts;
 +    double duration;
 +    int ret;
 +    int serial = 0;
 +    AVRational tb = is->video_st->time_base;
 +    AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
 +
 +#if CONFIG_AVFILTER
 +    AVFilterGraph *graph = avfilter_graph_alloc();
 +    AVFilterContext *filt_out = NULL, *filt_in = NULL;
 +    int last_w = 0;
 +    int last_h = 0;
 +    enum AVPixelFormat last_format = -2;
 +    int last_serial = -1;
 +#endif
 +
 +    for (;;) {
 +        while (is->paused && !is->videoq.abort_request)
 +            SDL_Delay(10);
 +
 +        avcodec_get_frame_defaults(frame);
 +        av_free_packet(&pkt);
 +
 +        ret = get_video_frame(is, frame, &pkt, &serial);
 +        if (ret < 0)
 +            goto the_end;
 +        if (!ret)
 +            continue;
 +
 +#if CONFIG_AVFILTER
 +        if (   last_w != frame->width
 +            || last_h != frame->height
 +            || last_format != frame->format
 +            || last_serial != serial) {
 +            av_log(NULL, AV_LOG_DEBUG,
 +                   "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
 +                   last_w, last_h,
 +                   (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
 +                   frame->width, frame->height,
 +                   (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
 +            avfilter_graph_free(&graph);
 +            graph = avfilter_graph_alloc();
 +            if ((ret = configure_video_filters(graph, is, vfilters, frame)) < 0) {
 +                SDL_Event event;
 +                event.type = FF_QUIT_EVENT;
 +                event.user.data1 = is;
 +                SDL_PushEvent(&event);
 +                av_free_packet(&pkt);
 +                goto the_end;
 +            }
 +            filt_in  = is->in_video_filter;
 +            filt_out = is->out_video_filter;
 +            last_w = frame->width;
 +            last_h = frame->height;
 +            last_format = frame->format;
 +            last_serial = serial;
 +            frame_rate = filt_out->inputs[0]->frame_rate;
 +        }
 +
 +        ret = av_buffersrc_add_frame(filt_in, frame);
 +        if (ret < 0)
 +            goto the_end;
 +        av_frame_unref(frame);
 +        avcodec_get_frame_defaults(frame);
 +        av_free_packet(&pkt);
 +
 +        while (ret >= 0) {
 +            is->frame_last_returned_time = av_gettime() / 1000000.0;
 +
 +            ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
 +            if (ret < 0) {
 +                if (ret == AVERROR_EOF)
 +                    is->video_finished = serial;
 +                ret = 0;
 +                break;
 +            }
 +
 +            is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
 +            if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
 +                is->frame_last_filter_delay = 0;
 +            tb = filt_out->inputs[0]->time_base;
 +#endif
 +            duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
 +            pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
 +            ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), serial);
 +            av_frame_unref(frame);
 +#if CONFIG_AVFILTER
 +        }
 +#endif
 +
 +        if (ret < 0)
 +            goto the_end;
 +    }
 + the_end:
 +    avcodec_flush_buffers(is->video_st->codec);
 +#if CONFIG_AVFILTER
 +    avfilter_graph_free(&graph);
 +#endif
 +    av_free_packet(&pkt);
 +    av_frame_free(&frame);
 +    return 0;
 +}
 +
 +static int subtitle_thread(void *arg)
 +{
 +    VideoState *is = arg;
 +    SubPicture *sp;
 +    AVPacket pkt1, *pkt = &pkt1;
 +    int got_subtitle;
 +    int serial;
 +    double pts;
 +    int i, j;
 +    int r, g, b, y, u, v, a;
 +
 +    for (;;) {
 +        while (is->paused && !is->subtitleq.abort_request) {
 +            SDL_Delay(10);
 +        }
 +        if (packet_queue_get(&is->subtitleq, pkt, 1, &serial) < 0)
 +            break;
 +
 +        if (pkt->data == flush_pkt.data) {
 +            avcodec_flush_buffers(is->subtitle_st->codec);
 +            continue;
 +        }
 +        SDL_LockMutex(is->subpq_mutex);
 +        while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
 +               !is->subtitleq.abort_request) {
 +            SDL_CondWait(is->subpq_cond, is->subpq_mutex);
 +        }
 +        SDL_UnlockMutex(is->subpq_mutex);
 +
 +        if (is->subtitleq.abort_request)
 +            return 0;
 +
 +        sp = &is->subpq[is->subpq_windex];
 +
 +       /* NOTE: ipts is the PTS of the _first_ picture beginning in
 +           this packet, if any */
 +        pts = 0;
 +        if (pkt->pts != AV_NOPTS_VALUE)
 +            pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
 +
 +        avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
 +                                 &got_subtitle, pkt);
 +        if (got_subtitle && sp->sub.format == 0) {
 +            if (sp->sub.pts != AV_NOPTS_VALUE)
 +                pts = sp->sub.pts / (double)AV_TIME_BASE;
 +            sp->pts = pts;
 +            sp->serial = serial;
 +
 +            for (i = 0; i < sp->sub.num_rects; i++)
 +            {
 +                for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
 +                {
 +                    RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
 +                    y = RGB_TO_Y_CCIR(r, g, b);
 +                    u = RGB_TO_U_CCIR(r, g, b, 0);
 +                    v = RGB_TO_V_CCIR(r, g, b, 0);
 +                    YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
 +                }
 +            }
 +
 +            /* now we can update the picture count */
 +            if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
 +                is->subpq_windex = 0;
 +            SDL_LockMutex(is->subpq_mutex);
 +            is->subpq_size++;
 +            SDL_UnlockMutex(is->subpq_mutex);
 +        } else if (got_subtitle) {
 +            avsubtitle_free(&sp->sub);
 +        }
 +        av_free_packet(pkt);
 +    }
 +    return 0;
 +}
 +
 +/* copy samples for viewing in editor window */
 +static void update_sample_display(VideoState *is, short *samples, int samples_size)
 +{
 +    int size, len;
 +
 +    size = samples_size / sizeof(short);
 +    while (size > 0) {
 +        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
 +        if (len > size)
 +            len = size;
 +        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
 +        samples += len;
 +        is->sample_array_index += len;
 +        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
 +            is->sample_array_index = 0;
 +        size -= len;
 +    }
 +}
 +
 +/* return the wanted number of samples to get better sync if sync_type is video
 + * or external master clock */
 +static int synchronize_audio(VideoState *is, int nb_samples)
 +{
 +    int wanted_nb_samples = nb_samples;
 +
 +    /* if not master, then we try to remove or add samples to correct the clock */
 +    if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
 +        double diff, avg_diff;
 +        int min_nb_samples, max_nb_samples;
 +
 +        diff = get_clock(&is->audclk) - get_master_clock(is);
 +
 +        if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
 +            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
 +            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
 +                /* not enough measures to have a correct estimate */
 +                is->audio_diff_avg_count++;
 +            } else {
 +                /* estimate the A-V difference */
 +                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
 +
 +                if (fabs(avg_diff) >= is->audio_diff_threshold) {
 +                    wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
 +                    min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
 +                    max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
 +                    wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
 +                }
 +                av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
 +                        diff, avg_diff, wanted_nb_samples - nb_samples,
 +                        is->audio_clock, is->audio_diff_threshold);
 +            }
 +        } else {
 +            /* too big difference : may be initial PTS errors, so
 +               reset A-V filter */
 +            is->audio_diff_avg_count = 0;
 +            is->audio_diff_cum       = 0;
 +        }
 +    }
 +
 +    return wanted_nb_samples;
 +}
 +
 +/**
 + * Decode one audio frame and return its uncompressed size.
 + *
 + * The processed audio frame is decoded, converted if required, and
 + * stored in is->audio_buf, with size in bytes given by the return
 + * value.
 + */
 +static int audio_decode_frame(VideoState *is)
 +{
 +    AVPacket *pkt_temp = &is->audio_pkt_temp;
 +    AVPacket *pkt = &is->audio_pkt;
 +    AVCodecContext *dec = is->audio_st->codec;
 +    int len1, data_size, resampled_data_size;
 +    int64_t dec_channel_layout;
 +    int got_frame;
 +    av_unused double audio_clock0;
 +    int wanted_nb_samples;
 +    AVRational tb;
 +    int ret;
 +    int reconfigure;
 +
 +    for (;;) {
 +        /* NOTE: the audio packet can contain several frames */
 +        while (pkt_temp->stream_index != -1 || is->audio_buf_frames_pending) {
 +            if (!is->frame) {
 +                if (!(is->frame = av_frame_alloc()))
 +                    return AVERROR(ENOMEM);
 +            } else {
 +                av_frame_unref(is->frame);
 +                avcodec_get_frame_defaults(is->frame);
 +            }
 +
 +            if (is->audioq.serial != is->audio_pkt_temp_serial)
 +                break;
 +
 +            if (is->paused)
 +                return -1;
 +
 +            if (!is->audio_buf_frames_pending) {
 +                len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
 +                if (len1 < 0) {
 +                    /* if error, we skip the frame */
 +                    pkt_temp->size = 0;
 +                    break;
 +                }
 +
 +                pkt_temp->dts =
 +                pkt_temp->pts = AV_NOPTS_VALUE;
 +                pkt_temp->data += len1;
 +                pkt_temp->size -= len1;
 +                if (pkt_temp->data && pkt_temp->size <= 0 || !pkt_temp->data && !got_frame)
 +                    pkt_temp->stream_index = -1;
 +                if (!pkt_temp->data && !got_frame)
 +                    is->audio_finished = is->audio_pkt_temp_serial;
 +
 +                if (!got_frame)
 +                    continue;
 +
 +                tb = (AVRational){1, is->frame->sample_rate};
 +                if (is->frame->pts != AV_NOPTS_VALUE)
 +                    is->frame->pts = av_rescale_q(is->frame->pts, dec->time_base, tb);
 +                else if (is->frame->pkt_pts != AV_NOPTS_VALUE)
 +                    is->frame->pts = av_rescale_q(is->frame->pkt_pts, is->audio_st->time_base, tb);
 +                else if (is->audio_frame_next_pts != AV_NOPTS_VALUE)
 +#if CONFIG_AVFILTER
 +                    is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_filter_src.freq}, tb);
 +#else
 +                    is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_src.freq}, tb);
 +#endif
 +
 +                if (is->frame->pts != AV_NOPTS_VALUE)
 +                    is->audio_frame_next_pts = is->frame->pts + is->frame->nb_samples;
 +
 +#if CONFIG_AVFILTER
 +                dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));
 +
 +                reconfigure =
 +                    cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
 +                                   is->frame->format, av_frame_get_channels(is->frame))    ||
 +                    is->audio_filter_src.channel_layout != dec_channel_layout ||
 +                    is->audio_filter_src.freq           != is->frame->sample_rate ||
 +                    is->audio_pkt_temp_serial           != is->audio_last_serial;
 +
 +                if (reconfigure) {
 +                    char buf1[1024], buf2[1024];
 +                    av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
 +                    av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
 +                    av_log(NULL, AV_LOG_DEBUG,
 +                           "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
 +                           is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, is->audio_last_serial,
 +                           is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->audio_pkt_temp_serial);
 +
 +                    is->audio_filter_src.fmt            = is->frame->format;
 +                    is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
 +                    is->audio_filter_src.channel_layout = dec_channel_layout;
 +                    is->audio_filter_src.freq           = is->frame->sample_rate;
 +                    is->audio_last_serial               = is->audio_pkt_temp_serial;
 +
 +                    if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
 +                        return ret;
 +                }
 +
 +                if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
 +                    return ret;
 +                av_frame_unref(is->frame);
 +#endif
 +            }
 +#if CONFIG_AVFILTER
 +            if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
 +                if (ret == AVERROR(EAGAIN)) {
 +                    is->audio_buf_frames_pending = 0;
 +                    continue;
 +                }
 +                if (ret == AVERROR_EOF)
 +                    is->audio_finished = is->audio_pkt_temp_serial;
 +                return ret;
 +            }
 +            is->audio_buf_frames_pending = 1;
 +            tb = is->out_audio_filter->inputs[0]->time_base;
 +#endif
 +
 +            data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
 +                                                   is->frame->nb_samples,
 +                                                   is->frame->format, 1);
 +
 +            dec_channel_layout =
 +                (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
 +                is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
 +            wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
 +
 +            if (is->frame->format        != is->audio_src.fmt            ||
 +                dec_channel_layout       != is->audio_src.channel_layout ||
 +                is->frame->sample_rate   != is->audio_src.freq           ||
 +                (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
 +                swr_free(&is->swr_ctx);
 +                is->swr_ctx = swr_alloc_set_opts(NULL,
 +                                                 is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
 +                                                 dec_channel_layout,           is->frame->format, is->frame->sample_rate,
 +                                                 0, NULL);
 +                if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
 +                    av_log(NULL, AV_LOG_ERROR,
 +                           "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
 +                            is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
 +                            is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
 +                    break;
 +                }
 +                is->audio_src.channel_layout = dec_channel_layout;
 +                is->audio_src.channels       = av_frame_get_channels(is->frame);
 +                is->audio_src.freq = is->frame->sample_rate;
 +                is->audio_src.fmt = is->frame->format;
 +            }
 +
 +            if (is->swr_ctx) {
 +                const uint8_t **in = (const uint8_t **)is->frame->extended_data;
 +                uint8_t **out = &is->audio_buf1;
 +                int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
 +                int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
 +                int len2;
 +                if (out_size < 0) {
 +                    av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
 +                    break;
 +                }
 +                if (wanted_nb_samples != is->frame->nb_samples) {
 +                    if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
 +                                                wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
 +                        av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
 +                        break;
 +                    }
 +                }
 +                av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
 +                if (!is->audio_buf1)
 +                    return AVERROR(ENOMEM);
 +                len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
 +                if (len2 < 0) {
 +                    av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
 +                    break;
 +                }
 +                if (len2 == out_count) {
 +                    av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
 +                    swr_init(is->swr_ctx);
 +                }
 +                is->audio_buf = is->audio_buf1;
 +                resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
 +            } else {
 +                is->audio_buf = is->frame->data[0];
 +                resampled_data_size = data_size;
 +            }
 +
 +            audio_clock0 = is->audio_clock;
 +            /* update the audio clock with the pts */
 +            if (is->frame->pts != AV_NOPTS_VALUE)
 +                is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
 +            else
 +                is->audio_clock = NAN;
 +            is->audio_clock_serial = is->audio_pkt_temp_serial;
 +#ifdef DEBUG
 +            {
 +                static double last_clock;
 +                printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
 +                       is->audio_clock - last_clock,
 +                       is->audio_clock, audio_clock0);
 +                last_clock = is->audio_clock;
 +            }
 +#endif
 +            return resampled_data_size;
 +        }
 +
 +        /* free the current packet */
 +        if (pkt->data)
 +            av_free_packet(pkt);
 +        memset(pkt_temp, 0, sizeof(*pkt_temp));
 +        pkt_temp->stream_index = -1;
 +
 +        if (is->audioq.abort_request) {
 +            return -1;
 +        }
 +
 +        if (is->audioq.nb_packets == 0)
 +            SDL_CondSignal(is->continue_read_thread);
 +
 +        /* read next packet */
 +        if ((packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
 +            return -1;
 +
 +        if (pkt->data == flush_pkt.data) {
 +            avcodec_flush_buffers(dec);
 +            is->audio_buf_frames_pending = 0;
 +            is->audio_frame_next_pts = AV_NOPTS_VALUE;
 +            if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek)
 +                is->audio_frame_next_pts = is->audio_st->start_time;
 +        }
 +
 +        *pkt_temp = *pkt;
 +    }
 +}
 +
 +/* prepare a new audio buffer */
 +static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
 +{
 +    VideoState *is = opaque;
 +    int audio_size, len1;
 +    int bytes_per_sec;
 +    int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
 +
 +    audio_callback_time = av_gettime();
 +
 +    while (len > 0) {
 +        if (is->audio_buf_index >= is->audio_buf_size) {
 +           audio_size = audio_decode_frame(is);
 +           if (audio_size < 0) {
 +                /* if error, just output silence */
 +               is->audio_buf      = is->silence_buf;
 +               is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
 +           } else {
 +               if (is->show_mode != SHOW_MODE_VIDEO)
 +                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
 +               is->audio_buf_size = audio_size;
 +           }
 +           is->audio_buf_index = 0;
 +        }
 +        len1 = is->audio_buf_size - is->audio_buf_index;
 +        if (len1 > len)
 +            len1 = len;
 +        memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
 +        len -= len1;
 +        stream += len1;
 +        is->audio_buf_index += len1;
 +    }
 +    bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
 +    is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
 +    /* Let's assume the audio driver that is used by SDL has two periods. */
 +    if (!isnan(is->audio_clock)) {
 +        set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
 +        sync_clock_to_slave(&is->extclk, &is->audclk);
 +    }
 +}
 +
 +static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
 +{
 +    SDL_AudioSpec wanted_spec, spec;
 +    const char *env;
 +    static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
 +
 +    env = SDL_getenv("SDL_AUDIO_CHANNELS");
 +    if (env) {
 +        wanted_nb_channels = atoi(env);
 +        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
 +    }
 +    if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
 +        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
 +        wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
 +    }
 +    wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
 +    wanted_spec.freq = wanted_sample_rate;
 +    if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
 +        av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
 +        return -1;
 +    }
 +    wanted_spec.format = AUDIO_S16SYS;
 +    wanted_spec.silence = 0;
 +    wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
 +    wanted_spec.callback = sdl_audio_callback;
 +    wanted_spec.userdata = opaque;
 +    while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
 +        av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
 +        wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
 +        if (!wanted_spec.channels) {
 +            av_log(NULL, AV_LOG_ERROR,
 +                   "No more channel combinations to try, audio open failed\n");
 +            return -1;
 +        }
 +        wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
 +    }
 +    if (spec.format != AUDIO_S16SYS) {
 +        av_log(NULL, AV_LOG_ERROR,
 +               "SDL advised audio format %d is not supported!\n", spec.format);
 +        return -1;
 +    }
 +    if (spec.channels != wanted_spec.channels) {
 +        wanted_channel_layout = av_get_default_channel_layout(spec.channels);
 +        if (!wanted_channel_layout) {
 +            av_log(NULL, AV_LOG_ERROR,
 +                   "SDL advised channel count %d is not supported!\n", spec.channels);
 +            return -1;
 +        }
 +    }
 +
 +    audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
 +    audio_hw_params->freq = spec.freq;
 +    audio_hw_params->channel_layout = wanted_channel_layout;
 +    audio_hw_params->channels =  spec.channels;
 +    return spec.size;
 +}
 +
 +/* open a given stream. Return 0 if OK */
 +static int stream_component_open(VideoState *is, int stream_index)
 +{
 +    AVFormatContext *ic = is->ic;
 +    AVCodecContext *avctx;
 +    AVCodec *codec;
 +    const char *forced_codec_name = NULL;
 +    AVDictionary *opts;
 +    AVDictionaryEntry *t = NULL;
 +    int sample_rate, nb_channels;
 +    int64_t channel_layout;
 +    int ret;
 +    int stream_lowres = lowres;
 +
 +    if (stream_index < 0 || stream_index >= ic->nb_streams)
 +        return -1;
 +    avctx = ic->streams[stream_index]->codec;
 +
 +    codec = avcodec_find_decoder(avctx->codec_id);
 +
 +    switch(avctx->codec_type){
 +        case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
 +        case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
 +        case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
 +    }
 +    if (forced_codec_name)
 +        codec = avcodec_find_decoder_by_name(forced_codec_name);
 +    if (!codec) {
 +        if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
 +                                      "No codec could be found with name '%s'\n", forced_codec_name);
 +        else                   av_log(NULL, AV_LOG_WARNING,
 +                                      "No codec could be found with id %d\n", avctx->codec_id);
 +        return -1;
 +    }
 +
 +    avctx->codec_id = codec->id;
 +    avctx->workaround_bugs   = workaround_bugs;
 +    if(stream_lowres > av_codec_get_max_lowres(codec)){
 +        av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
 +                av_codec_get_max_lowres(codec));
 +        stream_lowres = av_codec_get_max_lowres(codec);
 +    }
 +    av_codec_set_lowres(avctx, stream_lowres);
 +    avctx->error_concealment = error_concealment;
 +
 +    if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
 +    if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
 +    if(codec->capabilities & CODEC_CAP_DR1)
 +        avctx->flags |= CODEC_FLAG_EMU_EDGE;
 +
 +    opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
 +    if (!av_dict_get(opts, "threads", NULL, 0))
 +        av_dict_set(&opts, "threads", "auto", 0);
 +    if (stream_lowres)
 +        av_dict_set(&opts, "lowres", av_asprintf("%d", stream_lowres), AV_DICT_DONT_STRDUP_VAL);
 +    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
 +        av_dict_set(&opts, "refcounted_frames", "1", 0);
 +    if (avcodec_open2(avctx, codec, &opts) < 0)
 +        return -1;
 +    if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
 +        return AVERROR_OPTION_NOT_FOUND;
 +    }
 +
 +    ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
 +    switch (avctx->codec_type) {
 +    case AVMEDIA_TYPE_AUDIO:
 +#if CONFIG_AVFILTER
 +        {
 +            AVFilterLink *link;
 +
 +            is->audio_filter_src.freq           = avctx->sample_rate;
 +            is->audio_filter_src.channels       = avctx->channels;
 +            is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
 +            is->audio_filter_src.fmt            = avctx->sample_fmt;
 +            if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
 +                return ret;
 +            link = is->out_audio_filter->inputs[0];
 +            sample_rate    = link->sample_rate;
 +            nb_channels    = link->channels;
 +            channel_layout = link->channel_layout;
 +        }
 +#else
 +        sample_rate    = avctx->sample_rate;
 +        nb_channels    = avctx->channels;
 +        channel_layout = avctx->channel_layout;
 +#endif
 +
 +        /* prepare audio output */
 +        if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
 +            return ret;
 +        is->audio_hw_buf_size = ret;
 +        is->audio_src = is->audio_tgt;
 +        is->audio_buf_size  = 0;
 +        is->audio_buf_index = 0;
 +
 +        /* init averaging filter */
 +        is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
 +        is->audio_diff_avg_count = 0;
 +        /* since we do not have a precise anough audio fifo fullness,
 +           we correct audio sync only if larger than this threshold */
 +        is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1);
 +
 +        memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
 +        memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
 +        is->audio_pkt_temp.stream_index = -1;
 +
 +        is->audio_stream = stream_index;
 +        is->audio_st = ic->streams[stream_index];
 +
 +        packet_queue_start(&is->audioq);
 +        SDL_PauseAudio(0);
 +        break;
 +    case AVMEDIA_TYPE_VIDEO:
 +        is->video_stream = stream_index;
 +        is->video_st = ic->streams[stream_index];
 +
 +        packet_queue_start(&is->videoq);
 +        is->video_tid = SDL_CreateThread(video_thread, is);
 +        is->queue_attachments_req = 1;
 +        break;
 +    case AVMEDIA_TYPE_SUBTITLE:
 +        is->subtitle_stream = stream_index;
 +        is->subtitle_st = ic->streams[stream_index];
 +        packet_queue_start(&is->subtitleq);
 +
 +        is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
 +        break;
 +    default:
 +        break;
 +    }
 +    return 0;
 +}
 +
 +static void stream_component_close(VideoState *is, int stream_index)
 +{
 +    AVFormatContext *ic = is->ic;
 +    AVCodecContext *avctx;
 +
 +    if (stream_index < 0 || stream_index >= ic->nb_streams)
 +        return;
 +    avctx = ic->streams[stream_index]->codec;
 +
 +    switch (avctx->codec_type) {
 +    case AVMEDIA_TYPE_AUDIO:
 +        packet_queue_abort(&is->audioq);
 +
 +        SDL_CloseAudio();
 +
 +        packet_queue_flush(&is->audioq);
 +        av_free_packet(&is->audio_pkt);
 +        swr_free(&is->swr_ctx);
 +        av_freep(&is->audio_buf1);
 +        is->audio_buf1_size = 0;
 +        is->audio_buf = NULL;
 +        av_frame_free(&is->frame);
 +
 +        if (is->rdft) {
 +            av_rdft_end(is->rdft);
 +            av_freep(&is->rdft_data);
 +            is->rdft = NULL;
 +            is->rdft_bits = 0;
 +        }
 +#if CONFIG_AVFILTER
 +        avfilter_graph_free(&is->agraph);
 +#endif
 +        break;
 +    case AVMEDIA_TYPE_VIDEO:
 +        packet_queue_abort(&is->videoq);
 +
 +        /* note: we also signal this mutex to make sure we deblock the
 +           video thread in all cases */
 +        SDL_LockMutex(is->pictq_mutex);
 +        SDL_CondSignal(is->pictq_cond);
 +        SDL_UnlockMutex(is->pictq_mutex);
 +
 +        SDL_WaitThread(is->video_tid, NULL);
 +
 +        packet_queue_flush(&is->videoq);
 +        break;
 +    case AVMEDIA_TYPE_SUBTITLE:
 +        packet_queue_abort(&is->subtitleq);
 +
 +        /* note: we also signal this mutex to make sure we deblock the
 +           video thread in all cases */
 +        SDL_LockMutex(is->subpq_mutex);
 +        SDL_CondSignal(is->subpq_cond);
 +        SDL_UnlockMutex(is->subpq_mutex);
 +
 +        SDL_WaitThread(is->subtitle_tid, NULL);
 +
 +        packet_queue_flush(&is->subtitleq);
 +        break;
 +    default:
 +        break;
 +    }
 +
 +    ic->streams[stream_index]->discard = AVDISCARD_ALL;
 +    avcodec_close(avctx);
 +    switch (avctx->codec_type) {
 +    case AVMEDIA_TYPE_AUDIO:
 +        is->audio_st = NULL;
 +        is->audio_stream = -1;
 +        break;
 +    case AVMEDIA_TYPE_VIDEO:
 +        is->video_st = NULL;
 +        is->video_stream = -1;
 +        break;
 +    case AVMEDIA_TYPE_SUBTITLE:
 +        is->subtitle_st = NULL;
 +        is->subtitle_stream = -1;
 +        break;
 +    default:
 +        break;
 +    }
 +}
 +
 +static int decode_interrupt_cb(void *ctx)
 +{
 +    VideoState *is = ctx;
 +    return is->abort_request;
 +}
 +
 +static int is_realtime(AVFormatContext *s)
 +{
 +    if(   !strcmp(s->iformat->name, "rtp")
 +       || !strcmp(s->iformat->name, "rtsp")
 +       || !strcmp(s->iformat->name, "sdp")
 +    )
 +        return 1;
 +
 +    if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
 +                 || !strncmp(s->filename, "udp:", 4)
 +                )
 +    )
 +        return 1;
 +    return 0;
 +}
 +
 +/* this thread gets the stream from the disk or the network */
 +static int read_thread(void *arg)
 +{
 +    VideoState *is = arg;
 +    AVFormatContext *ic = NULL;
 +    int err, i, ret;
 +    int st_index[AVMEDIA_TYPE_NB];
 +    AVPacket pkt1, *pkt = &pkt1;
 +    int eof = 0;
 +    int64_t stream_start_time;
 +    int pkt_in_play_range = 0;
 +    AVDictionaryEntry *t;
 +    AVDictionary **opts;
 +    int orig_nb_streams;
 +    SDL_mutex *wait_mutex = SDL_CreateMutex();
 +
 +    memset(st_index, -1, sizeof(st_index));
 +    is->last_video_stream = is->video_stream = -1;
 +    is->last_audio_stream = is->audio_stream = -1;
 +    is->last_subtitle_stream = is->subtitle_stream = -1;
 +
 +    ic = avformat_alloc_context();
 +    ic->interrupt_callback.callback = decode_interrupt_cb;
 +    ic->interrupt_callback.opaque = is;
 +    err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
 +    if (err < 0) {
 +        print_error(is->filename, err);
 +        ret = -1;
 +        goto fail;
 +    }
 +    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
 +        ret = AVERROR_OPTION_NOT_FOUND;
 +        goto fail;
 +    }
 +    is->ic = ic;
 +
 +    if (genpts)
 +        ic->flags |= AVFMT_FLAG_GENPTS;
 +
 +    opts = setup_find_stream_info_opts(ic, codec_opts);
 +    orig_nb_streams = ic->nb_streams;
 +
 +    err = avformat_find_stream_info(ic, opts);
 +    if (err < 0) {
 +        av_log(NULL, AV_LOG_WARNING,
 +               "%s: could not find codec parameters\n", is->filename);
 +        ret = -1;
 +        goto fail;
 +    }
 +    for (i = 0; i < orig_nb_streams; i++)
 +        av_dict_free(&opts[i]);
 +    av_freep(&opts);
 +
 +    if (ic->pb)
 +        ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
 +
 +    if (seek_by_bytes < 0)
 +        seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
 +
 +    is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
 +
 +    if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
 +        window_title = av_asprintf("%s - %s", t->value, input_filename);
 +
 +    /* if seeking requested, we execute it */
 +    if (start_time != AV_NOPTS_VALUE) {
 +        int64_t timestamp;
 +
 +        timestamp = start_time;
 +        /* add the stream start time */
 +        if (ic->start_time != AV_NOPTS_VALUE)
 +            timestamp += ic->start_time;
 +        ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
 +                    is->filename, (double)timestamp / AV_TIME_BASE);
 +        }
 +    }
 +
 +    is->realtime = is_realtime(ic);
 +
 +    for (i = 0; i < ic->nb_streams; i++)
 +        ic->streams[i]->discard = AVDISCARD_ALL;
 +    if (!video_disable)
 +        st_index[AVMEDIA_TYPE_VIDEO] =
 +            av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
 +                                wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
 +    if (!audio_disable)
 +        st_index[AVMEDIA_TYPE_AUDIO] =
 +            av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
 +                                wanted_stream[AVMEDIA_TYPE_AUDIO],
 +                                st_index[AVMEDIA_TYPE_VIDEO],
 +                                NULL, 0);
 +    if (!video_disable && !subtitle_disable)
 +        st_index[AVMEDIA_TYPE_SUBTITLE] =
 +            av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
 +                                wanted_stream[AVMEDIA_TYPE_SUBTITLE],
 +                                (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
 +                                 st_index[AVMEDIA_TYPE_AUDIO] :
 +                                 st_index[AVMEDIA_TYPE_VIDEO]),
 +                                NULL, 0);
 +    if (show_status) {
 +        av_dump_format(ic, 0, is->filename, 0);
 +    }
 +
 +    is->show_mode = show_mode;
 +
 +    /* open the streams */
 +    if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
 +        stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
 +    }
 +
 +    ret = -1;
 +    if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
 +        ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
 +    }
 +    if (is->show_mode == SHOW_MODE_NONE)
 +        is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
 +
 +    if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
 +        stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
 +    }
 +
 +    if (is->video_stream < 0 && is->audio_stream < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
 +               is->filename);
 +        ret = -1;
 +        goto fail;
 +    }
 +
 +    if (infinite_buffer < 0 && is->realtime)
 +        infinite_buffer = 1;
 +
 +    for (;;) {
 +        if (is->abort_request)
 +            break;
 +        if (is->paused != is->last_paused) {
 +            is->last_paused = is->paused;
 +            if (is->paused)
 +                is->read_pause_return = av_read_pause(ic);
 +            else
 +                av_read_play(ic);
 +        }
 +#if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
 +        if (is->paused &&
 +                (!strcmp(ic->iformat->name, "rtsp") ||
 +                 (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
 +            /* wait 10 ms to avoid trying to get another packet */
 +            /* XXX: horrible */
 +            SDL_Delay(10);
 +            continue;
 +        }
 +#endif
 +        if (is->seek_req) {
 +            int64_t seek_target = is->seek_pos;
 +            int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
 +            int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
 +// FIXME the +-2 is due to rounding being not done in the correct direction in generation
 +//      of the seek_pos/seek_rel variables
 +
 +            ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
 +            if (ret < 0) {
 +                av_log(NULL, AV_LOG_ERROR,
 +                       "%s: error while seeking\n", is->ic->filename);
 +            } else {
 +                if (is->audio_stream >= 0) {
 +                    packet_queue_flush(&is->audioq);
 +                    packet_queue_put(&is->audioq, &flush_pkt);
 +                }
 +                if (is->subtitle_stream >= 0) {
 +                    packet_queue_flush(&is->subtitleq);
 +                    packet_queue_put(&is->subtitleq, &flush_pkt);
 +                }
 +                if (is->video_stream >= 0) {
 +                    packet_queue_flush(&is->videoq);
 +                    packet_queue_put(&is->videoq, &flush_pkt);
 +                }
 +                if (is->seek_flags & AVSEEK_FLAG_BYTE) {
 +                   set_clock(&is->extclk, NAN, 0);
 +                } else {
 +                   set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
 +                }
 +            }
 +            is->seek_req = 0;
 +            is->queue_attachments_req = 1;
 +            eof = 0;
 +            if (is->paused)
 +                step_to_next_frame(is);
 +        }
 +        if (is->queue_attachments_req) {
 +            if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
 +                AVPacket copy;
 +                if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
 +                    goto fail;
 +                packet_queue_put(&is->videoq, &copy);
 +                packet_queue_put_nullpacket(&is->videoq, is->video_stream);
 +            }
 +            is->queue_attachments_req = 0;
 +        }
 +
 +        /* if the queue are full, no need to read more */
 +        if (infinite_buffer<1 &&
 +              (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
 +            || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
 +                && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
 +                    || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
 +                && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
 +            /* wait 10 ms */
 +            SDL_LockMutex(wait_mutex);
 +            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
 +            SDL_UnlockMutex(wait_mutex);
 +            continue;
 +        }
 +        if (!is->paused &&
 +            (!is->audio_st || is->audio_finished == is->audioq.serial) &&
 +            (!is->video_st || (is->video_finished == is->videoq.serial && is->pictq_size == 0))) {
 +            if (loop != 1 && (!loop || --loop)) {
 +                stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
 +            } else if (autoexit) {
 +                ret = AVERROR_EOF;
 +                goto fail;
 +            }
 +        }
 +        if (eof) {
 +            if (is->video_stream >= 0)
 +                packet_queue_put_nullpacket(&is->videoq, is->video_stream);
 +            if (is->audio_stream >= 0)
 +                packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
 +            SDL_Delay(10);
 +            eof=0;
 +            continue;
 +        }
 +        ret = av_read_frame(ic, pkt);
 +        if (ret < 0) {
 +            if (ret == AVERROR_EOF || url_feof(ic->pb))
 +                eof = 1;
 +            if (ic->pb && ic->pb->error)
 +                break;
 +            SDL_LockMutex(wait_mutex);
 +            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
 +            SDL_UnlockMutex(wait_mutex);
 +            continue;
 +        }
 +        /* check if packet is in play range specified by user, then queue, otherwise discard */
 +        stream_start_time = ic->streams[pkt->stream_index]->start_time;
 +        pkt_in_play_range = duration == AV_NOPTS_VALUE ||
 +                (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
 +                av_q2d(ic->streams[pkt->stream_index]->time_base) -
 +                (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
 +                <= ((double)duration / 1000000);
 +        if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
 +            packet_queue_put(&is->audioq, pkt);
 +        } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
 +                   && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
 +            packet_queue_put(&is->videoq, pkt);
 +        } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
 +            packet_queue_put(&is->subtitleq, pkt);
 +        } else {
 +            av_free_packet(pkt);
 +        }
 +    }
 +    /* wait until the end */
 +    while (!is->abort_request) {
 +        SDL_Delay(100);
 +    }
 +
 +    ret = 0;
 + fail:
 +    /* close each stream */
 +    if (is->audio_stream >= 0)
 +        stream_component_close(is, is->audio_stream);
 +    if (is->video_stream >= 0)
 +        stream_component_close(is, is->video_stream);
 +    if (is->subtitle_stream >= 0)
 +        stream_component_close(is, is->subtitle_stream);
 +    if (is->ic) {
 +        avformat_close_input(&is->ic);
 +    }
 +
 +    if (ret != 0) {
 +        SDL_Event event;
 +
 +        event.type = FF_QUIT_EVENT;
 +        event.user.data1 = is;
 +        SDL_PushEvent(&event);
 +    }
 +    SDL_DestroyMutex(wait_mutex);
 +    return 0;
 +}
 +
 +static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
 +{
 +    VideoState *is;
 +
 +    is = av_mallocz(sizeof(VideoState));
 +    if (!is)
 +        return NULL;
 +    av_strlcpy(is->filename, filename, sizeof(is->filename));
 +    is->iformat = iformat;
 +    is->ytop    = 0;
 +    is->xleft   = 0;
 +
 +    /* start video display */
 +    is->pictq_mutex = SDL_CreateMutex();
 +    is->pictq_cond  = SDL_CreateCond();
 +
 +    is->subpq_mutex = SDL_CreateMutex();
 +    is->subpq_cond  = SDL_CreateCond();
 +
 +    packet_queue_init(&is->videoq);
 +    packet_queue_init(&is->audioq);
 +    packet_queue_init(&is->subtitleq);
 +
 +    is->continue_read_thread = SDL_CreateCond();
 +
 +    init_clock(&is->vidclk, &is->videoq.serial);
 +    init_clock(&is->audclk, &is->audioq.serial);
 +    init_clock(&is->extclk, &is->extclk.serial);
 +    is->audio_clock_serial = -1;
 +    is->audio_last_serial = -1;
 +    is->av_sync_type = av_sync_type;
 +    is->read_tid     = SDL_CreateThread(read_thread, is);
 +    if (!is->read_tid) {
 +        av_free(is);
 +        return NULL;
 +    }
 +    return is;
 +}
 +
 +static void stream_cycle_channel(VideoState *is, int codec_type)
 +{
 +    AVFormatContext *ic = is->ic;
 +    int start_index, stream_index;
 +    int old_index;
 +    AVStream *st;
 +    AVProgram *p = NULL;
 +    int nb_streams = is->ic->nb_streams;
 +
 +    if (codec_type == AVMEDIA_TYPE_VIDEO) {
 +        start_index = is->last_video_stream;
 +        old_index = is->video_stream;
 +    } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
 +        start_index = is->last_audio_stream;
 +        old_index = is->audio_stream;
 +    } else {
 +        start_index = is->last_subtitle_stream;
 +        old_index = is->subtitle_stream;
 +    }
 +    stream_index = start_index;
 +
 +    if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
 +        p = av_find_program_from_stream(ic, NULL, is->video_stream);
 +        if (p) {
 +            nb_streams = p->nb_stream_indexes;
 +            for (start_index = 0; start_index < nb_streams; start_index++)
 +                if (p->stream_index[start_index] == stream_index)
 +                    break;
 +            if (start_index == nb_streams)
 +                start_index = -1;
 +            stream_index = start_index;
 +        }
 +    }
 +
 +    for (;;) {
 +        if (++stream_index >= nb_streams)
 +        {
 +            if (codec_type == AVMEDIA_TYPE_SUBTITLE)
 +            {
 +                stream_index = -1;
 +                is->last_subtitle_stream = -1;
 +                goto the_end;
 +            }
 +            if (start_index == -1)
 +                return;
 +            stream_index = 0;
 +        }
 +        if (stream_index == start_index)
 +            return;
 +        st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
 +        if (st->codec->codec_type == codec_type) {
 +            /* check that parameters are OK */
 +            switch (codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                if (st->codec->sample_rate != 0 &&
 +                    st->codec->channels != 0)
 +                    goto the_end;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                goto the_end;
 +            default:
 +                break;
 +            }
 +        }
 +    }
 + the_end:
 +    if (p && stream_index != -1)
 +        stream_index = p->stream_index[stream_index];
 +    stream_component_close(is, old_index);
 +    stream_component_open(is, stream_index);
 +}
 +
 +
 +static void toggle_full_screen(VideoState *is)
 +{
 +#if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
 +    /* OS X needs to reallocate the SDL overlays */
 +    int i;
 +    for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
 +        is->pictq[i].reallocate = 1;
 +#endif
 +    is_full_screen = !is_full_screen;
 +    video_open(is, 1, NULL);
 +}
 +
 +static void toggle_audio_display(VideoState *is)
 +{
 +    int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 +    int next = is->show_mode;
 +    do {
 +        next = (next + 1) % SHOW_MODE_NB;
 +    } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
 +    if (is->show_mode != next) {
 +        fill_rectangle(screen,
 +                    is->xleft, is->ytop, is->width, is->height,
 +                    bgcolor, 1);
 +        is->force_refresh = 1;
 +        is->show_mode = next;
 +    }
 +}
 +
 +static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
 +    double remaining_time = 0.0;
 +    SDL_PumpEvents();
 +    while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
 +        if (!cursor_hidden && av_gettime() - cursor_last_shown > CURSOR_HIDE_DELAY) {
 +            SDL_ShowCursor(0);
 +            cursor_hidden = 1;
 +        }
 +        if (remaining_time > 0.0)
 +            av_usleep((int64_t)(remaining_time * 1000000.0));
 +        remaining_time = REFRESH_RATE;
 +        if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
 +            video_refresh(is, &remaining_time);
 +        SDL_PumpEvents();
 +    }
 +}
 +
 +/* handle an event sent by the GUI */
 +static void event_loop(VideoState *cur_stream)
 +{
 +    SDL_Event event;
 +    double incr, pos, frac;
 +
 +    for (;;) {
 +        double x;
 +        refresh_loop_wait_event(cur_stream, &event);
 +        switch (event.type) {
 +        case SDL_KEYDOWN:
 +            if (exit_on_keydown) {
 +                do_exit(cur_stream);
 +                break;
 +            }
 +            switch (event.key.keysym.sym) {
 +            case SDLK_ESCAPE:
 +            case SDLK_q:
 +                do_exit(cur_stream);
 +                break;
 +            case SDLK_f:
 +                toggle_full_screen(cur_stream);
 +                cur_stream->force_refresh = 1;
 +                break;
 +            case SDLK_p:
 +            case SDLK_SPACE:
 +                toggle_pause(cur_stream);
 +                break;
 +            case SDLK_s: // S: Step to next frame
 +                step_to_next_frame(cur_stream);
 +                break;
 +            case SDLK_a:
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
 +                break;
 +            case SDLK_v:
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
 +                break;
 +            case SDLK_c:
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
 +                break;
 +            case SDLK_t:
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
 +                break;
 +            case SDLK_w:
 +                toggle_audio_display(cur_stream);
 +                break;
 +            case SDLK_PAGEUP:
 +                incr = 600.0;
 +                goto do_seek;
 +            case SDLK_PAGEDOWN:
 +                incr = -600.0;
 +                goto do_seek;
 +            case SDLK_LEFT:
 +                incr = -10.0;
 +                goto do_seek;
 +            case SDLK_RIGHT:
 +                incr = 10.0;
 +                goto do_seek;
 +            case SDLK_UP:
 +                incr = 60.0;
 +                goto do_seek;
 +            case SDLK_DOWN:
 +                incr = -60.0;
 +            do_seek:
 +                    if (seek_by_bytes) {
 +                        if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
 +                            pos = cur_stream->video_current_pos;
 +                        } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
 +                            pos = cur_stream->audio_pkt.pos;
 +                        } else
 +                            pos = avio_tell(cur_stream->ic->pb);
 +                        if (cur_stream->ic->bit_rate)
 +                            incr *= cur_stream->ic->bit_rate / 8.0;
 +                        else
 +                            incr *= 180000.0;
 +                        pos += incr;
 +                        stream_seek(cur_stream, pos, incr, 1);
 +                    } else {
 +                        pos = get_master_clock(cur_stream);
 +                        if (isnan(pos))
 +                            pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
 +                        pos += incr;
 +                        if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
 +                            pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
 +                        stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
 +                    }
 +                break;
 +            default:
 +                break;
 +            }
 +            break;
 +        case SDL_VIDEOEXPOSE:
 +            cur_stream->force_refresh = 1;
 +            break;
 +        case SDL_MOUSEBUTTONDOWN:
 +            if (exit_on_mousedown) {
 +                do_exit(cur_stream);
 +                break;
 +            }
 +        case SDL_MOUSEMOTION:
 +            if (cursor_hidden) {
 +                SDL_ShowCursor(1);
 +                cursor_hidden = 0;
 +            }
 +            cursor_last_shown = av_gettime();
 +            if (event.type == SDL_MOUSEBUTTONDOWN) {
 +                x = event.button.x;
 +            } else {
 +                if (event.motion.state != SDL_PRESSED)
 +                    break;
 +                x = event.motion.x;
 +            }
 +                if (seek_by_bytes || cur_stream->ic->duration <= 0) {
 +                    uint64_t size =  avio_size(cur_stream->ic->pb);
 +                    stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
 +                } else {
 +                    int64_t ts;
 +                    int ns, hh, mm, ss;
 +                    int tns, thh, tmm, tss;
 +                    tns  = cur_stream->ic->duration / 1000000LL;
 +                    thh  = tns / 3600;
 +                    tmm  = (tns % 3600) / 60;
 +                    tss  = (tns % 60);
 +                    frac = x / cur_stream->width;
 +                    ns   = frac * tns;
 +                    hh   = ns / 3600;
 +                    mm   = (ns % 3600) / 60;
 +                    ss   = (ns % 60);
 +                    av_log(NULL, AV_LOG_INFO,
 +                           "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
 +                            hh, mm, ss, thh, tmm, tss);
 +                    ts = frac * cur_stream->ic->duration;
 +                    if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
 +                        ts += cur_stream->ic->start_time;
 +                    stream_seek(cur_stream, ts, 0, 0);
 +                }
 +            break;
 +        case SDL_VIDEORESIZE:
 +                screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
 +                                          SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
 +                if (!screen) {
 +                    av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
 +                    do_exit(cur_stream);
 +                }
 +                screen_width  = cur_stream->width  = screen->w;
 +                screen_height = cur_stream->height = screen->h;
 +                cur_stream->force_refresh = 1;
 +            break;
 +        case SDL_QUIT:
 +        case FF_QUIT_EVENT:
 +            do_exit(cur_stream);
 +            break;
 +        case FF_ALLOC_EVENT:
 +            alloc_picture(event.user.data1);
 +            break;
 +        default:
 +            break;
 +        }
 +    }
 +}
 +
 +static int opt_frame_size(void *optctx, const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
 +    return opt_default(NULL, "video_size", arg);
 +}
 +
 +static int opt_width(void *optctx, const char *opt, const char *arg)
 +{
 +    screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
 +    return 0;
 +}
 +
 +static int opt_height(void *optctx, const char *opt, const char *arg)
 +{
 +    screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
 +    return 0;
 +}
 +
 +static int opt_format(void *optctx, const char *opt, const char *arg)
 +{
 +    file_iformat = av_find_input_format(arg);
 +    if (!file_iformat) {
 +        av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
 +        return AVERROR(EINVAL);
 +    }
 +    return 0;
 +}
 +
 +static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
 +    return opt_default(NULL, "pixel_format", arg);
 +}
 +
 +static int opt_sync(void *optctx, const char *opt, const char *arg)
 +{
 +    if (!strcmp(arg, "audio"))
 +        av_sync_type = AV_SYNC_AUDIO_MASTER;
 +    else if (!strcmp(arg, "video"))
 +        av_sync_type = AV_SYNC_VIDEO_MASTER;
 +    else if (!strcmp(arg, "ext"))
 +        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
 +    else {
 +        av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
 +        exit(1);
 +    }
 +    return 0;
 +}
 +
 +static int opt_seek(void *optctx, const char *opt, const char *arg)
 +{
 +    start_time = parse_time_or_die(opt, arg, 1);
 +    return 0;
 +}
 +
 +static int opt_duration(void *optctx, const char *opt, const char *arg)
 +{
 +    duration = parse_time_or_die(opt, arg, 1);
 +    return 0;
 +}
 +
 +static int opt_show_mode(void *optctx, const char *opt, const char *arg)
 +{
 +    show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
 +                !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
 +                !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
 +                parse_number_or_die(opt, arg, OPT_INT, 0,&nbs