Merge commit '059a934806d61f7af9ab3fd9f74994b838ea5eba'
authorMichael Niedermayer <michael@niedermayer.cc>
Mon, 27 Jul 2015 20:53:16 +0000 (22:53 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Mon, 27 Jul 2015 21:15:19 +0000 (23:15 +0200)
* commit '059a934806d61f7af9ab3fd9f74994b838ea5eba':
  lavc: Consistently prefix input buffer defines

Conflicts:
doc/examples/decoding_encoding.c
libavcodec/4xm.c
libavcodec/aac_adtstoasc_bsf.c
libavcodec/aacdec.c
libavcodec/aacenc.c
libavcodec/ac3dec.h
libavcodec/asvenc.c
libavcodec/avcodec.h
libavcodec/avpacket.c
libavcodec/dvdec.c
libavcodec/ffv1enc.c
libavcodec/g2meet.c
libavcodec/gif.c
libavcodec/h264.c
libavcodec/h264_mp4toannexb_bsf.c
libavcodec/huffyuvdec.c
libavcodec/huffyuvenc.c
libavcodec/jpeglsenc.c
libavcodec/libxvid.c
libavcodec/mdec.c
libavcodec/motionpixels.c
libavcodec/mpeg4videodec.c
libavcodec/mpegvideo.c
libavcodec/noise_bsf.c
libavcodec/nuv.c
libavcodec/nvenc.c
libavcodec/options.c
libavcodec/parser.c
libavcodec/pngenc.c
libavcodec/proresenc_kostya.c
libavcodec/qsvdec.c
libavcodec/svq1enc.c
libavcodec/tiffenc.c
libavcodec/truemotion2.c
libavcodec/utils.c
libavcodec/utvideoenc.c
libavcodec/vc1dec.c
libavcodec/wmalosslessdec.c
libavformat/adxdec.c
libavformat/aiffdec.c
libavformat/apc.c
libavformat/apetag.c
libavformat/avidec.c
libavformat/bink.c
libavformat/cafdec.c
libavformat/flvdec.c
libavformat/id3v2.c
libavformat/isom.c
libavformat/matroskadec.c
libavformat/mov.c
libavformat/mpc.c
libavformat/mpc8.c
libavformat/mpegts.c
libavformat/mvi.c
libavformat/mxfdec.c
libavformat/mxg.c
libavformat/nutdec.c
libavformat/oggdec.c
libavformat/oggparsecelt.c
libavformat/oggparseflac.c
libavformat/oggparseopus.c
libavformat/oggparsespeex.c
libavformat/omadec.c
libavformat/rawdec.c
libavformat/riffdec.c
libavformat/rl2.c
libavformat/rmdec.c
libavformat/rtpdec_latm.c
libavformat/rtpdec_mpeg4.c
libavformat/rtpdec_qdm2.c
libavformat/rtpdec_svq3.c
libavformat/sierravmd.c
libavformat/smacker.c
libavformat/smush.c
libavformat/spdifenc.c
libavformat/takdec.c
libavformat/tta.c
libavformat/utils.c
libavformat/vqf.c
libavformat/westwood_vqa.c
libavformat/xmv.c
libavformat/xwma.c
libavformat/yop.c

Merged-by: Michael Niedermayer <michael@niedermayer.cc>
152 files changed:
1  2 
doc/examples/decoding_encoding.c
ffmpeg.c
ffserver.c
libavcodec/4xm.c
libavcodec/a64multienc.c
libavcodec/aac_adtstoasc_bsf.c
libavcodec/aac_parser.c
libavcodec/aacdec.c
libavcodec/aacdec_template.c
libavcodec/aacenc.c
libavcodec/ac3_parser.c
libavcodec/ac3dec.h
libavcodec/adpcmenc.c
libavcodec/alacenc.c
libavcodec/asvenc.c
libavcodec/atrac3.c
libavcodec/avcodec.h
libavcodec/avpacket.c
libavcodec/avuienc.c
libavcodec/binkaudio.c
libavcodec/cdxl.c
libavcodec/cook.c
libavcodec/crystalhd.c
libavcodec/dca_parser.c
libavcodec/dss_sp.c
libavcodec/dump_extradata_bsf.c
libavcodec/dvdec.c
libavcodec/eamad.c
libavcodec/ffv1enc.c
libavcodec/flashsv2enc.c
libavcodec/flicvideo.c
libavcodec/g2meet.c
libavcodec/get_bits.h
libavcodec/gif.c
libavcodec/h264.c
libavcodec/h264_mp4toannexb_bsf.c
libavcodec/hevc_filter.c
libavcodec/hevc_mp4toannexb_bsf.c
libavcodec/hevc_parse.c
libavcodec/hevcdsp.h
libavcodec/hevcdsp_template.c
libavcodec/huffyuvdec.c
libavcodec/huffyuvenc.c
libavcodec/iff.c
libavcodec/imc.c
libavcodec/imx_dump_header_bsf.c
libavcodec/internal.h
libavcodec/j2kenc.c
libavcodec/jpeg2000.c
libavcodec/jpeglsenc.c
libavcodec/lclenc.c
libavcodec/libaacplus.c
libavcodec/libdcadec.c
libavcodec/libfaac.c
libavcodec/libfdk-aacenc.c
libavcodec/libopenh264enc.c
libavcodec/libopusenc.c
libavcodec/libspeexenc.c
libavcodec/libstagefright.cpp
libavcodec/libvo-aacenc.c
libavcodec/libvorbisenc.c
libavcodec/libx265.c
libavcodec/libxavs.c
libavcodec/libxvid.c
libavcodec/ljpegenc.c
libavcodec/mjpega_dump_header_bsf.c
libavcodec/mjpegdec.c
libavcodec/movsub_bsf.c
libavcodec/movtextenc.c
libavcodec/mp3_header_decompress_bsf.c
libavcodec/mpeg4_unpack_bframes_bsf.c
libavcodec/mpegvideo.c
libavcodec/mpegvideo_enc.c
libavcodec/mss2.c
libavcodec/msvideo1enc.c
libavcodec/noise_bsf.c
libavcodec/nuv.c
libavcodec/nvenc.c
libavcodec/options.c
libavcodec/parser.c
libavcodec/pcx.c
libavcodec/pngenc.c
libavcodec/pnm_parser.c
libavcodec/proresenc_anatoliy.c
libavcodec/proresenc_kostya.c
libavcodec/qsvenc.c
libavcodec/qsvenc_hevc.c
libavcodec/shorten.c
libavcodec/snowenc.c
libavcodec/startcode.c
libavcodec/svq1enc.c
libavcodec/tiff.c
libavcodec/tiffenc.c
libavcodec/utils.c
libavcodec/utvideodec.c
libavcodec/utvideoenc.c
libavcodec/vc1dec.c
libavcodec/wavpack.c
libavcodec/wma.h
libavcodec/wmadec.c
libavcodec/wmalosslessdec.c
libavcodec/wmaprodec.c
libavcodec/wmavoice.c
libavcodec/wmv2enc.c
libavcodec/wnv1.c
libavcodec/x86/hevc_sao.asm
libavdevice/dshow.c
libavdevice/vfwcap.c
libavdevice/xcbgrab.c
libavformat/4xm.c
libavformat/anm.c
libavformat/apetag.c
libavformat/apngdec.c
libavformat/asfdec_f.c
libavformat/asfdec_o.c
libavformat/avc.c
libavformat/avidec.c
libavformat/avio.h
libavformat/aviobuf.c
libavformat/cafdec.c
libavformat/dtsdec.c
libavformat/flac_picture.c
libavformat/flacdec.c
libavformat/flvdec.c
libavformat/hevc.c
libavformat/hls.c
libavformat/id3v2.c
libavformat/iff.c
libavformat/internal.h
libavformat/jacosubdec.c
libavformat/jvdec.c
libavformat/matroskadec.c
libavformat/mov.c
libavformat/movenc.c
libavformat/mpc8.c
libavformat/mpegts.c
libavformat/mxg.c
libavformat/oggdec.c
libavformat/oggparseogm.c
libavformat/oggparsetheora.c
libavformat/oggparsevorbis.c
libavformat/rdt.c
libavformat/redspark.c
libavformat/rmdec.c
libavformat/rtpdec_h264.c
libavformat/rtpdec_hevc.c
libavformat/rtpdec_latm.c
libavformat/rtpdec_qt.c
libavformat/rtpdec_xiph.c
libavformat/spdifenc.c
libavformat/takdec.c
libavformat/utils.c

index e1f4ae3,0000000..fb386eb
mode 100644,000000..100644
--- /dev/null
@@@ -1,665 -1,0 +1,665 @@@
-     uint8_t inbuf[AUDIO_INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE];
 +/*
 + * Copyright (c) 2001 Fabrice Bellard
 + *
 + * Permission is hereby granted, free of charge, to any person obtaining a copy
 + * of this software and associated documentation files (the "Software"), to deal
 + * in the Software without restriction, including without limitation the rights
 + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 + * copies of the Software, and to permit persons to whom the Software is
 + * furnished to do so, subject to the following conditions:
 + *
 + * The above copyright notice and this permission notice shall be included in
 + * all copies or substantial portions of the Software.
 + *
 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 + * THE SOFTWARE.
 + */
 +
 +/**
 + * @file
 + * libavcodec API use example.
 + *
 + * @example decoding_encoding.c
 + * Note that libavcodec only handles codecs (mpeg, mpeg4, etc...),
 + * not file formats (avi, vob, mp4, mov, mkv, mxf, flv, mpegts, mpegps, etc...). See library 'libavformat' for the
 + * format handling
 + */
 +
 +#include <math.h>
 +
 +#include <libavutil/opt.h>
 +#include <libavcodec/avcodec.h>
 +#include <libavutil/channel_layout.h>
 +#include <libavutil/common.h>
 +#include <libavutil/imgutils.h>
 +#include <libavutil/mathematics.h>
 +#include <libavutil/samplefmt.h>
 +
 +#define INBUF_SIZE 4096
 +#define AUDIO_INBUF_SIZE 20480
 +#define AUDIO_REFILL_THRESH 4096
 +
 +/* check that a given sample format is supported by the encoder */
 +static int check_sample_fmt(AVCodec *codec, enum AVSampleFormat sample_fmt)
 +{
 +    const enum AVSampleFormat *p = codec->sample_fmts;
 +
 +    while (*p != AV_SAMPLE_FMT_NONE) {
 +        if (*p == sample_fmt)
 +            return 1;
 +        p++;
 +    }
 +    return 0;
 +}
 +
 +/* just pick the highest supported samplerate */
 +static int select_sample_rate(AVCodec *codec)
 +{
 +    const int *p;
 +    int best_samplerate = 0;
 +
 +    if (!codec->supported_samplerates)
 +        return 44100;
 +
 +    p = codec->supported_samplerates;
 +    while (*p) {
 +        best_samplerate = FFMAX(*p, best_samplerate);
 +        p++;
 +    }
 +    return best_samplerate;
 +}
 +
 +/* select layout with the highest channel count */
 +static int select_channel_layout(AVCodec *codec)
 +{
 +    const uint64_t *p;
 +    uint64_t best_ch_layout = 0;
 +    int best_nb_channels   = 0;
 +
 +    if (!codec->channel_layouts)
 +        return AV_CH_LAYOUT_STEREO;
 +
 +    p = codec->channel_layouts;
 +    while (*p) {
 +        int nb_channels = av_get_channel_layout_nb_channels(*p);
 +
 +        if (nb_channels > best_nb_channels) {
 +            best_ch_layout    = *p;
 +            best_nb_channels = nb_channels;
 +        }
 +        p++;
 +    }
 +    return best_ch_layout;
 +}
 +
 +/*
 + * Audio encoding example
 + */
 +static void audio_encode_example(const char *filename)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    AVFrame *frame;
 +    AVPacket pkt;
 +    int i, j, k, ret, got_output;
 +    int buffer_size;
 +    FILE *f;
 +    uint16_t *samples;
 +    float t, tincr;
 +
 +    printf("Encode audio file %s\n", filename);
 +
 +    /* find the MP2 encoder */
 +    codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate audio codec context\n");
 +        exit(1);
 +    }
 +
 +    /* put sample parameters */
 +    c->bit_rate = 64000;
 +
 +    /* check that the encoder supports s16 pcm input */
 +    c->sample_fmt = AV_SAMPLE_FMT_S16;
 +    if (!check_sample_fmt(codec, c->sample_fmt)) {
 +        fprintf(stderr, "Encoder does not support sample format %s",
 +                av_get_sample_fmt_name(c->sample_fmt));
 +        exit(1);
 +    }
 +
 +    /* select other audio parameters supported by the encoder */
 +    c->sample_rate    = select_sample_rate(codec);
 +    c->channel_layout = select_channel_layout(codec);
 +    c->channels       = av_get_channel_layout_nb_channels(c->channel_layout);
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "wb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +
 +    /* frame containing input raw audio */
 +    frame = av_frame_alloc();
 +    if (!frame) {
 +        fprintf(stderr, "Could not allocate audio frame\n");
 +        exit(1);
 +    }
 +
 +    frame->nb_samples     = c->frame_size;
 +    frame->format         = c->sample_fmt;
 +    frame->channel_layout = c->channel_layout;
 +
 +    /* the codec gives us the frame size, in samples,
 +     * we calculate the size of the samples buffer in bytes */
 +    buffer_size = av_samples_get_buffer_size(NULL, c->channels, c->frame_size,
 +                                             c->sample_fmt, 0);
 +    if (buffer_size < 0) {
 +        fprintf(stderr, "Could not get sample buffer size\n");
 +        exit(1);
 +    }
 +    samples = av_malloc(buffer_size);
 +    if (!samples) {
 +        fprintf(stderr, "Could not allocate %d bytes for samples buffer\n",
 +                buffer_size);
 +        exit(1);
 +    }
 +    /* setup the data pointers in the AVFrame */
 +    ret = avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
 +                                   (const uint8_t*)samples, buffer_size, 0);
 +    if (ret < 0) {
 +        fprintf(stderr, "Could not setup audio frame\n");
 +        exit(1);
 +    }
 +
 +    /* encode a single tone sound */
 +    t = 0;
 +    tincr = 2 * M_PI * 440.0 / c->sample_rate;
 +    for (i = 0; i < 200; i++) {
 +        av_init_packet(&pkt);
 +        pkt.data = NULL; // packet data will be allocated by the encoder
 +        pkt.size = 0;
 +
 +        for (j = 0; j < c->frame_size; j++) {
 +            samples[2*j] = (int)(sin(t) * 10000);
 +
 +            for (k = 1; k < c->channels; k++)
 +                samples[2*j + k] = samples[2*j];
 +            t += tincr;
 +        }
 +        /* encode the samples */
 +        ret = avcodec_encode_audio2(c, &pkt, frame, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding audio frame\n");
 +            exit(1);
 +        }
 +        if (got_output) {
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +
 +    /* get the delayed frames */
 +    for (got_output = 1; got_output; i++) {
 +        ret = avcodec_encode_audio2(c, &pkt, NULL, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding frame\n");
 +            exit(1);
 +        }
 +
 +        if (got_output) {
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +    fclose(f);
 +
 +    av_freep(&samples);
 +    av_frame_free(&frame);
 +    avcodec_close(c);
 +    av_free(c);
 +}
 +
 +/*
 + * Audio decoding.
 + */
 +static void audio_decode_example(const char *outfilename, const char *filename)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    int len;
 +    FILE *f, *outfile;
-     uint8_t inbuf[INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE];
++    uint8_t inbuf[AUDIO_INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
 +    AVPacket avpkt;
 +    AVFrame *decoded_frame = NULL;
 +
 +    av_init_packet(&avpkt);
 +
 +    printf("Decode audio file %s to %s\n", filename, outfilename);
 +
 +    /* find the mpeg audio decoder */
 +    codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate audio codec context\n");
 +        exit(1);
 +    }
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "rb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +    outfile = fopen(outfilename, "wb");
 +    if (!outfile) {
 +        av_free(c);
 +        exit(1);
 +    }
 +
 +    /* decode until eof */
 +    avpkt.data = inbuf;
 +    avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);
 +
 +    while (avpkt.size > 0) {
 +        int i, ch;
 +        int got_frame = 0;
 +
 +        if (!decoded_frame) {
 +            if (!(decoded_frame = av_frame_alloc())) {
 +                fprintf(stderr, "Could not allocate audio frame\n");
 +                exit(1);
 +            }
 +        }
 +
 +        len = avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
 +        if (len < 0) {
 +            fprintf(stderr, "Error while decoding\n");
 +            exit(1);
 +        }
 +        if (got_frame) {
 +            /* if a frame has been decoded, output it */
 +            int data_size = av_get_bytes_per_sample(c->sample_fmt);
 +            if (data_size < 0) {
 +                /* This should not occur, checking just for paranoia */
 +                fprintf(stderr, "Failed to calculate data size\n");
 +                exit(1);
 +            }
 +            for (i=0; i<decoded_frame->nb_samples; i++)
 +                for (ch=0; ch<c->channels; ch++)
 +                    fwrite(decoded_frame->data[ch] + data_size*i, 1, data_size, outfile);
 +        }
 +        avpkt.size -= len;
 +        avpkt.data += len;
 +        avpkt.dts =
 +        avpkt.pts = AV_NOPTS_VALUE;
 +        if (avpkt.size < AUDIO_REFILL_THRESH) {
 +            /* Refill the input buffer, to avoid trying to decode
 +             * incomplete frames. Instead of this, one could also use
 +             * a parser, or use a proper container format through
 +             * libavformat. */
 +            memmove(inbuf, avpkt.data, avpkt.size);
 +            avpkt.data = inbuf;
 +            len = fread(avpkt.data + avpkt.size, 1,
 +                        AUDIO_INBUF_SIZE - avpkt.size, f);
 +            if (len > 0)
 +                avpkt.size += len;
 +        }
 +    }
 +
 +    fclose(outfile);
 +    fclose(f);
 +
 +    avcodec_close(c);
 +    av_free(c);
 +    av_frame_free(&decoded_frame);
 +}
 +
 +/*
 + * Video encoding example
 + */
 +static void video_encode_example(const char *filename, int codec_id)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    int i, ret, x, y, got_output;
 +    FILE *f;
 +    AVFrame *frame;
 +    AVPacket pkt;
 +    uint8_t endcode[] = { 0, 0, 1, 0xb7 };
 +
 +    printf("Encode video file %s\n", filename);
 +
 +    /* find the mpeg1 video encoder */
 +    codec = avcodec_find_encoder(codec_id);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate video codec context\n");
 +        exit(1);
 +    }
 +
 +    /* put sample parameters */
 +    c->bit_rate = 400000;
 +    /* resolution must be a multiple of two */
 +    c->width = 352;
 +    c->height = 288;
 +    /* frames per second */
 +    c->time_base = (AVRational){1,25};
 +    /* emit one intra frame every ten frames
 +     * check frame pict_type before passing frame
 +     * to encoder, if frame->pict_type is AV_PICTURE_TYPE_I
 +     * then gop_size is ignored and the output of encoder
 +     * will always be I frame irrespective to gop_size
 +     */
 +    c->gop_size = 10;
 +    c->max_b_frames = 1;
 +    c->pix_fmt = AV_PIX_FMT_YUV420P;
 +
 +    if (codec_id == AV_CODEC_ID_H264)
 +        av_opt_set(c->priv_data, "preset", "slow", 0);
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "wb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +
 +    frame = av_frame_alloc();
 +    if (!frame) {
 +        fprintf(stderr, "Could not allocate video frame\n");
 +        exit(1);
 +    }
 +    frame->format = c->pix_fmt;
 +    frame->width  = c->width;
 +    frame->height = c->height;
 +
 +    /* the image can be allocated by any means and av_image_alloc() is
 +     * just the most convenient way if av_malloc() is to be used */
 +    ret = av_image_alloc(frame->data, frame->linesize, c->width, c->height,
 +                         c->pix_fmt, 32);
 +    if (ret < 0) {
 +        fprintf(stderr, "Could not allocate raw picture buffer\n");
 +        exit(1);
 +    }
 +
 +    /* encode 1 second of video */
 +    for (i = 0; i < 25; i++) {
 +        av_init_packet(&pkt);
 +        pkt.data = NULL;    // packet data will be allocated by the encoder
 +        pkt.size = 0;
 +
 +        fflush(stdout);
 +        /* prepare a dummy image */
 +        /* Y */
 +        for (y = 0; y < c->height; y++) {
 +            for (x = 0; x < c->width; x++) {
 +                frame->data[0][y * frame->linesize[0] + x] = x + y + i * 3;
 +            }
 +        }
 +
 +        /* Cb and Cr */
 +        for (y = 0; y < c->height/2; y++) {
 +            for (x = 0; x < c->width/2; x++) {
 +                frame->data[1][y * frame->linesize[1] + x] = 128 + y + i * 2;
 +                frame->data[2][y * frame->linesize[2] + x] = 64 + x + i * 5;
 +            }
 +        }
 +
 +        frame->pts = i;
 +
 +        /* encode the image */
 +        ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding frame\n");
 +            exit(1);
 +        }
 +
 +        if (got_output) {
 +            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +
 +    /* get the delayed frames */
 +    for (got_output = 1; got_output; i++) {
 +        fflush(stdout);
 +
 +        ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
 +        if (ret < 0) {
 +            fprintf(stderr, "Error encoding frame\n");
 +            exit(1);
 +        }
 +
 +        if (got_output) {
 +            printf("Write frame %3d (size=%5d)\n", i, pkt.size);
 +            fwrite(pkt.data, 1, pkt.size, f);
 +            av_free_packet(&pkt);
 +        }
 +    }
 +
 +    /* add sequence end code to have a real mpeg file */
 +    fwrite(endcode, 1, sizeof(endcode), f);
 +    fclose(f);
 +
 +    avcodec_close(c);
 +    av_free(c);
 +    av_freep(&frame->data[0]);
 +    av_frame_free(&frame);
 +    printf("\n");
 +}
 +
 +/*
 + * Video decoding example
 + */
 +
 +static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,
 +                     char *filename)
 +{
 +    FILE *f;
 +    int i;
 +
 +    f = fopen(filename,"w");
 +    fprintf(f, "P5\n%d %d\n%d\n", xsize, ysize, 255);
 +    for (i = 0; i < ysize; i++)
 +        fwrite(buf + i * wrap, 1, xsize, f);
 +    fclose(f);
 +}
 +
 +static int decode_write_frame(const char *outfilename, AVCodecContext *avctx,
 +                              AVFrame *frame, int *frame_count, AVPacket *pkt, int last)
 +{
 +    int len, got_frame;
 +    char buf[1024];
 +
 +    len = avcodec_decode_video2(avctx, frame, &got_frame, pkt);
 +    if (len < 0) {
 +        fprintf(stderr, "Error while decoding frame %d\n", *frame_count);
 +        return len;
 +    }
 +    if (got_frame) {
 +        printf("Saving %sframe %3d\n", last ? "last " : "", *frame_count);
 +        fflush(stdout);
 +
 +        /* the picture is allocated by the decoder, no need to free it */
 +        snprintf(buf, sizeof(buf), outfilename, *frame_count);
 +        pgm_save(frame->data[0], frame->linesize[0],
 +                 frame->width, frame->height, buf);
 +        (*frame_count)++;
 +    }
 +    if (pkt->data) {
 +        pkt->size -= len;
 +        pkt->data += len;
 +    }
 +    return 0;
 +}
 +
 +static void video_decode_example(const char *outfilename, const char *filename)
 +{
 +    AVCodec *codec;
 +    AVCodecContext *c= NULL;
 +    int frame_count;
 +    FILE *f;
 +    AVFrame *frame;
-     memset(inbuf + INBUF_SIZE, 0, FF_INPUT_BUFFER_PADDING_SIZE);
++    uint8_t inbuf[INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
 +    AVPacket avpkt;
 +
 +    av_init_packet(&avpkt);
 +
 +    /* set end of buffer to 0 (this ensures that no overreading happens for damaged mpeg streams) */
++    memset(inbuf + INBUF_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 +
 +    printf("Decode video file %s to %s\n", filename, outfilename);
 +
 +    /* find the mpeg1 video decoder */
 +    codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO);
 +    if (!codec) {
 +        fprintf(stderr, "Codec not found\n");
 +        exit(1);
 +    }
 +
 +    c = avcodec_alloc_context3(codec);
 +    if (!c) {
 +        fprintf(stderr, "Could not allocate video codec context\n");
 +        exit(1);
 +    }
 +
 +    if (codec->capabilities & AV_CODEC_CAP_TRUNCATED)
 +        c->flags |= AV_CODEC_FLAG_TRUNCATED; // we do not send complete frames
 +
 +    /* For some codecs, such as msmpeg4 and mpeg4, width and height
 +       MUST be initialized there because this information is not
 +       available in the bitstream. */
 +
 +    /* open it */
 +    if (avcodec_open2(c, codec, NULL) < 0) {
 +        fprintf(stderr, "Could not open codec\n");
 +        exit(1);
 +    }
 +
 +    f = fopen(filename, "rb");
 +    if (!f) {
 +        fprintf(stderr, "Could not open %s\n", filename);
 +        exit(1);
 +    }
 +
 +    frame = av_frame_alloc();
 +    if (!frame) {
 +        fprintf(stderr, "Could not allocate video frame\n");
 +        exit(1);
 +    }
 +
 +    frame_count = 0;
 +    for (;;) {
 +        avpkt.size = fread(inbuf, 1, INBUF_SIZE, f);
 +        if (avpkt.size == 0)
 +            break;
 +
 +        /* NOTE1: some codecs are stream based (mpegvideo, mpegaudio)
 +           and this is the only method to use them because you cannot
 +           know the compressed data size before analysing it.
 +
 +           BUT some other codecs (msmpeg4, mpeg4) are inherently frame
 +           based, so you must call them with all the data for one
 +           frame exactly. You must also initialize 'width' and
 +           'height' before initializing them. */
 +
 +        /* NOTE2: some codecs allow the raw parameters (frame size,
 +           sample rate) to be changed at any frame. We handle this, so
 +           you should also take care of it */
 +
 +        /* here, we use a stream based decoder (mpeg1video), so we
 +           feed decoder and see if it could decode a frame */
 +        avpkt.data = inbuf;
 +        while (avpkt.size > 0)
 +            if (decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 0) < 0)
 +                exit(1);
 +    }
 +
 +    /* some codecs, such as MPEG, transmit the I and P frame with a
 +       latency of one frame. You must do the following to have a
 +       chance to get the last frame of the video */
 +    avpkt.data = NULL;
 +    avpkt.size = 0;
 +    decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 1);
 +
 +    fclose(f);
 +
 +    avcodec_close(c);
 +    av_free(c);
 +    av_frame_free(&frame);
 +    printf("\n");
 +}
 +
 +int main(int argc, char **argv)
 +{
 +    const char *output_type;
 +
 +    /* register all the codecs */
 +    avcodec_register_all();
 +
 +    if (argc < 2) {
 +        printf("usage: %s output_type\n"
 +               "API example program to decode/encode a media stream with libavcodec.\n"
 +               "This program generates a synthetic stream and encodes it to a file\n"
 +               "named test.h264, test.mp2 or test.mpg depending on output_type.\n"
 +               "The encoded stream is then decoded and written to a raw data output.\n"
 +               "output_type must be chosen between 'h264', 'mp2', 'mpg'.\n",
 +               argv[0]);
 +        return 1;
 +    }
 +    output_type = argv[1];
 +
 +    if (!strcmp(output_type, "h264")) {
 +        video_encode_example("test.h264", AV_CODEC_ID_H264);
 +    } else if (!strcmp(output_type, "mp2")) {
 +        audio_encode_example("test.mp2");
 +        audio_decode_example("test.pcm", "test.mp2");
 +    } else if (!strcmp(output_type, "mpg")) {
 +        video_encode_example("test.mpg", AV_CODEC_ID_MPEG1VIDEO);
 +        video_decode_example("test%02d.pgm", "test.mpg");
 +    } else {
 +        fprintf(stderr, "Invalid output type '%s', choose between 'h264', 'mp2', or 'mpg'\n",
 +                output_type);
 +        return 1;
 +    }
 +
 +    return 0;
 +}
diff --cc ffmpeg.c
index be09cff,0000000..07c62a4
mode 100644,000000..100644
--- /dev/null
+++ b/ffmpeg.c
@@@ -1,4141 -1,0 +1,4141 @@@
-         ost->st->codec->extradata = av_mallocz(ost->enc_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
 +/*
 + * 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/internal.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 "libavutil/threadmessage.h"
 +#include "libavcodec/mathops.h"
 +#include "libavformat/os_support.h"
 +
 +# 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_SETCONSOLECTRLHANDLER
 +#include <windows.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 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;
 +
 +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
 +
 +#if HAVE_PTHREADS
 +static void free_input_threads(void);
 +#endif
 +
 +/* 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 * 1000LL,
 +                                 AV_TIME_BASE_Q, ist->st->time_base);
 +        end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
 +                                 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->dec_ctx, 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, subtracting 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;
 +
 +    if (ist->sub2video.end_pts < INT64_MAX)
 +        sub2video_update(ist, NULL);
 +    for (i = 0; i < ist->nb_filters; i++)
 +        av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 +}
 +
 +/* end of sub2video hack */
 +
 +static void term_exit_sigsafe(void)
 +{
 +#if HAVE_TERMIOS_H
 +    if(restore_tty)
 +        tcsetattr (0, TCSANOW, &oldtty);
 +#endif
 +}
 +
 +void term_exit(void)
 +{
 +    av_log(NULL, AV_LOG_QUIET, "%s", "");
 +    term_exit_sigsafe();
 +}
 +
 +static volatile int received_sigterm = 0;
 +static volatile int received_nb_signals = 0;
 +static volatile int transcode_init_done = 0;
 +static volatile int ffmpeg_exited = 0;
 +static int main_return_code = 0;
 +
 +static void
 +sigterm_handler(int sig)
 +{
 +    received_sigterm = sig;
 +    received_nb_signals++;
 +    term_exit_sigsafe();
 +    if(received_nb_signals > 3) {
 +        write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
 +                           strlen("Received > 3 system signals, hard exiting\n"));
 +
 +        exit(123);
 +    }
 +}
 +
 +#if HAVE_SETCONSOLECTRLHANDLER
 +static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType)
 +{
 +    av_log(NULL, AV_LOG_DEBUG, "\nReceived windows signal %ld\n", fdwCtrlType);
 +
 +    switch (fdwCtrlType)
 +    {
 +    case CTRL_C_EVENT:
 +    case CTRL_BREAK_EVENT:
 +        sigterm_handler(SIGINT);
 +        return TRUE;
 +
 +    case CTRL_CLOSE_EVENT:
 +    case CTRL_LOGOFF_EVENT:
 +    case CTRL_SHUTDOWN_EVENT:
 +        sigterm_handler(SIGTERM);
 +        /* Basically, with these 3 events, when we return from this method the
 +           process is hard terminated, so stall as long as we need to
 +           to try and let the main thread(s) clean up and gracefully terminate
 +           (we have at most 5 seconds, but should be done far before that). */
 +        while (!ffmpeg_exited) {
 +            Sleep(0);
 +        }
 +        return TRUE;
 +
 +    default:
 +        av_log(NULL, AV_LOG_ERROR, "Received unknown windows signal %ld\n", fdwCtrlType);
 +        return FALSE;
 +    }
 +}
 +#endif
 +
 +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
 +
 +    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 +    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 +#ifdef SIGXCPU
 +    signal(SIGXCPU, sigterm_handler);
 +#endif
 +#if HAVE_SETCONSOLECTRLHANDLER
 +    SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
 +#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 > transcode_init_done;
 +}
 +
 +const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 +
 +static void ffmpeg_cleanup(int ret)
 +{
 +    int i, j;
 +
 +    if (do_benchmark) {
 +        int maxrss = getmaxrss() / 1024;
 +        av_log(NULL, AV_LOG_INFO, "bench: maxrss=%ikB\n", maxrss);
 +    }
 +
 +    for (i = 0; i < nb_filtergraphs; i++) {
 +        FilterGraph *fg = filtergraphs[i];
 +        avfilter_graph_free(&fg->graph);
 +        for (j = 0; j < fg->nb_inputs; j++) {
 +            av_freep(&fg->inputs[j]->name);
 +            av_freep(&fg->inputs[j]);
 +        }
 +        av_freep(&fg->inputs);
 +        for (j = 0; j < fg->nb_outputs; j++) {
 +            av_freep(&fg->outputs[j]->name);
 +            av_freep(&fg->outputs[j]);
 +        }
 +        av_freep(&fg->outputs);
 +        av_freep(&fg->graph_desc);
 +
 +        av_freep(&filtergraphs[i]);
 +    }
 +    av_freep(&filtergraphs);
 +
 +    av_freep(&subtitle_out);
 +
 +    /* close files */
 +    for (i = 0; i < nb_output_files; i++) {
 +        OutputFile *of = output_files[i];
 +        AVFormatContext *s;
 +        if (!of)
 +            continue;
 +        s = of->ctx;
 +        if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
 +            avio_closep(&s->pb);
 +        avformat_free_context(s);
 +        av_dict_free(&of->opts);
 +
 +        av_freep(&output_files[i]);
 +    }
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        AVBitStreamFilterContext *bsfc;
 +
 +        if (!ost)
 +            continue;
 +
 +        bsfc = ost->bitstream_filters;
 +        while (bsfc) {
 +            AVBitStreamFilterContext *next = bsfc->next;
 +            av_bitstream_filter_close(bsfc);
 +            bsfc = next;
 +        }
 +        ost->bitstream_filters = NULL;
 +        av_frame_free(&ost->filtered_frame);
 +        av_frame_free(&ost->last_frame);
 +
 +        av_parser_close(ost->parser);
 +
 +        av_freep(&ost->forced_keyframes);
 +        av_expr_free(ost->forced_keyframes_pexpr);
 +        av_freep(&ost->avfilter);
 +        av_freep(&ost->logfile_prefix);
 +
 +        av_freep(&ost->audio_channels_map);
 +        ost->audio_channels_mapped = 0;
 +
 +        avcodec_free_context(&ost->enc_ctx);
 +
 +        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++) {
 +        InputStream *ist = input_streams[i];
 +
 +        av_frame_free(&ist->decoded_frame);
 +        av_frame_free(&ist->filter_frame);
 +        av_dict_free(&ist->decoder_opts);
 +        avsubtitle_free(&ist->prev_sub.subtitle);
 +        av_frame_free(&ist->sub2video.frame);
 +        av_freep(&ist->filters);
 +        av_freep(&ist->hwaccel_device);
 +
 +        avcodec_free_context(&ist->dec_ctx);
 +
 +        av_freep(&input_streams[i]);
 +    }
 +
 +    if (vstats_file)
 +        fclose(vstats_file);
 +    av_freep(&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, "Exiting normally, received signal %d.\n",
 +               (int) received_sigterm);
 +    } else if (ret && transcode_init_done) {
 +        av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
 +    }
 +    term_exit();
 +    ffmpeg_exited = 1;
 +}
 +
 +void remove_avoptions(AVDictionary **a, AVDictionary *b)
 +{
 +    AVDictionaryEntry *t = NULL;
 +
 +    while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
 +        av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
 +    }
 +}
 +
 +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);
 +            av_log(NULL, AV_LOG_INFO, "bench: %8"PRIu64" %s \n", t - current_time, buf);
 +        }
 +        current_time = t;
 +    }
 +}
 +
 +static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
 +{
 +    int i;
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost2 = output_streams[i];
 +        ost2->finished |= ost == ost2 ? this_stream : others;
 +    }
 +}
 +
 +static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 +{
 +    AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 +    AVCodecContext          *avctx = ost->encoding_needed ? ost->enc_ctx : ost->st->codec;
 +    int ret;
 +
 +    if (!ost->st->codec->extradata_size && ost->enc_ctx->extradata_size) {
-             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
++        ost->st->codec->extradata = av_mallocz(ost->enc_ctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
 +        if (ost->st->codec->extradata) {
 +            memcpy(ost->st->codec->extradata, ost->enc_ctx->extradata, ost->enc_ctx->extradata_size);
 +            ost->st->codec->extradata_size = ost->enc_ctx->extradata_size;
 +        }
 +    }
 +
 +    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++;
 +    }
 +    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
 +                                              NULL);
 +        ost->quality = sd ? AV_RL32(sd) : -1;
 +    }
 +
 +    if (bsfc)
 +        av_packet_split_side_data(pkt);
 +
 +    while (bsfc) {
 +        AVPacket new_pkt = *pkt;
 +        AVDictionaryEntry *bsf_arg = av_dict_get(ost->bsf_args,
 +                                                 bsfc->filter->name,
 +                                                 NULL, 0);
 +        int a = av_bitstream_filter_filter(bsfc, avctx,
 +                                           bsf_arg ? bsf_arg->value : 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) {
-                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
++            uint8_t *t = av_malloc(new_pkt.size + AV_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);
-             extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
++                memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 +                new_pkt.data = t;
 +                new_pkt.buf = NULL;
 +                a = 1;
 +            } else
 +                a = AVERROR(ENOMEM);
 +        }
 +        if (a > 0) {
 +            pkt->side_data = NULL;
 +            pkt->side_data_elems = 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) {
 +            new_pkt = *pkt;
 +            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)) {
 +        if (pkt->dts != AV_NOPTS_VALUE &&
 +            pkt->pts != AV_NOPTS_VALUE &&
 +            pkt->dts > pkt->pts) {
 +            av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
 +                   pkt->dts, pkt->pts,
 +                   ost->file_index, ost->st->index);
 +            pkt->pts =
 +            pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
 +                     - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
 +                     - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
 +        }
 +     if(
 +        (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;
 +
 +    ost->data_size += pkt->size;
 +    ost->packets_written++;
 +
 +    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->enc_ctx->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);
 +        main_return_code = 1;
 +        close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
 +    }
 +    av_free_packet(pkt);
 +}
 +
 +static void close_output_stream(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +
 +    ost->finished |= ENCODER_FINISHED;
 +    if (of->shortest) {
 +        int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->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->enc_ctx->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->enc_ctx;
 +    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;
 +    ost->samples_encoded += frame->nb_samples;
 +    ost->frames_encoded++;
 +
 +    av_assert0(pkt.size || !pkt.data);
 +    update_benchmark(NULL);
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
 +               "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
 +               av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
 +               enc->time_base.num, enc->time_base.den);
 +    }
 +
 +    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) {
 +        av_packet_rescale_ts(&pkt, 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));
 +        }
 +
 +        write_frame(s, &pkt, ost);
 +    }
 +}
 +
 +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->enc_ctx;
 +
 +    if (!subtitle_out) {
 +        subtitle_out = av_malloc(subtitle_out_max_size);
 +        if (!subtitle_out) {
 +            av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
 +            exit_program(1);
 +        }
 +    }
 +
 +    /* 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++) {
 +        unsigned save_num_rects = sub->num_rects;
 +
 +        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;
 +
 +        ost->frames_encoded++;
 +
 +        subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 +                                                    subtitle_out_max_size, sub);
 +        if (i == 1)
 +            sub->num_rects = save_num_rects;
 +        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;
 +        }
 +        pkt.dts = pkt.pts;
 +        write_frame(s, &pkt, ost);
 +    }
 +}
 +
 +static void do_video_out(AVFormatContext *s,
 +                         OutputStream *ost,
 +                         AVFrame *next_picture,
 +                         double sync_ipts)
 +{
 +    int ret, format_video_sync;
 +    AVPacket pkt;
 +    AVCodecContext *enc = ost->enc_ctx;
 +    AVCodecContext *mux_enc = ost->st->codec;
 +    int nb_frames, nb0_frames, i;
 +    double delta, delta0;
 +    double duration = 0;
 +    int frame_size = 0;
 +    InputStream *ist = NULL;
 +    AVFilterContext *filter = ost->filter->filter;
 +
 +    if (ost->source_index >= 0)
 +        ist = input_streams[ost->source_index];
 +
 +    if (filter->inputs[0]->frame_rate.num > 0 &&
 +        filter->inputs[0]->frame_rate.den > 0)
 +        duration = 1/(av_q2d(filter->inputs[0]->frame_rate) * av_q2d(enc->time_base));
 +
 +    if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 +        duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
 +
 +    if (!ost->filters_script &&
 +        !ost->filters &&
 +        next_picture &&
 +        ist &&
 +        lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
 +        duration = lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
 +    }
 +
 +    if (!next_picture) {
 +        //end, flushing
 +        nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
 +                                          ost->last_nb0_frames[1],
 +                                          ost->last_nb0_frames[2]);
 +    } else {
 +        delta0 = sync_ipts - ost->sync_opts;
 +        delta  = delta0 + duration;
 +
 +        /* by default, we output a single frame */
 +        nb0_frames = 0;
 +        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;
 +            }
 +            if (format_video_sync == VSYNC_CFR && copy_ts) {
 +                format_video_sync = VSYNC_VSCFR;
 +            }
 +        }
 +
 +        if (delta0 < 0 &&
 +            delta > 0 &&
 +            format_video_sync != VSYNC_PASSTHROUGH &&
 +            format_video_sync != VSYNC_DROP) {
 +            double cor = FFMIN(-delta0, duration);
 +            if (delta0 < -0.6) {
 +                av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
 +            } else
 +                av_log(NULL, AV_LOG_DEBUG, "Cliping frame in rate conversion by %f\n", -delta0);
 +            sync_ipts += cor;
 +            duration -= cor;
 +            delta0 += cor;
 +        }
 +
 +        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;
 +                delta0 = 0;
 +                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 (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
 +                nb_frames = 0;
 +            } else if (delta < -1.1)
 +                nb_frames = 0;
 +            else if (delta > 1.1) {
 +                nb_frames = lrintf(delta);
 +                if (delta0 > 1.1)
 +                    nb0_frames = lrintf(delta0 - 0.6);
 +            }
 +            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);
 +    nb0_frames = FFMIN(nb0_frames, nb_frames);
 +
 +    memmove(ost->last_nb0_frames + 1,
 +            ost->last_nb0_frames,
 +            sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
 +    ost->last_nb0_frames[0] = nb0_frames;
 +
 +    if (nb0_frames == 0 && ost->last_droped) {
 +        nb_frames_drop++;
 +        av_log(NULL, AV_LOG_VERBOSE,
 +               "*** dropping frame %d from stream %d at ts %"PRId64"\n",
 +               ost->frame_number, ost->st->index, ost->last_frame->pts);
 +    }
 +    if (nb_frames > (nb0_frames && ost->last_droped) + (nb_frames > nb0_frames)) {
 +        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 - (nb0_frames && ost->last_droped) - (nb_frames > nb0_frames);
 +        av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 +    }
 +    ost->last_droped = nb_frames == nb0_frames && next_picture;
 +
 +  /* duplicates frame if needed */
 +  for (i = 0; i < nb_frames; i++) {
 +    AVFrame *in_picture;
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +
 +    if (i < nb0_frames && ost->last_frame) {
 +        in_picture = ost->last_frame;
 +    } else
 +        in_picture = next_picture;
 +
 +    if (!in_picture)
 +        return;
 +
 +    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. */
 +        if (in_picture->interlaced_frame)
 +            mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 +        else
 +            mux_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;
 +
 +        write_frame(s, &pkt, ost);
 +    } else {
 +        int got_packet, forced_keyframe = 0;
 +        double pts_time;
 +
 +        if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_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)
 +                mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 +            else
 +                mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 +        } else
 +            mux_enc->field_order = AV_FIELD_PROGRESSIVE;
 +
 +        in_picture->quality = enc->global_quality;
 +        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;
 +        } else if (   ost->forced_keyframes
 +                   && !strncmp(ost->forced_keyframes, "source", 6)
 +                   && in_picture->key_frame==1) {
 +            forced_keyframe = 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);
 +        if (debug_ts) {
 +            av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
 +                   "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
 +                   av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
 +                   enc->time_base.num, enc->time_base.den);
 +        }
 +
 +        ost->frames_encoded++;
 +
 +        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 (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, &enc->time_base),
 +                       av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
 +            }
 +
 +            if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
 +                pkt.pts = ost->sync_opts;
 +
 +            av_packet_rescale_ts(&pkt, 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;
 +            write_frame(s, &pkt, ost);
 +
 +            /* 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);
 +  }
 +
 +    if (!ost->last_frame)
 +        ost->last_frame = av_frame_alloc();
 +    av_frame_unref(ost->last_frame);
 +    if (next_picture && ost->last_frame)
 +        av_frame_ref(ost->last_frame, next_picture);
 +    else
 +        av_frame_free(&ost->last_frame);
 +}
 +
 +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->enc_ctx;
 +    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        frame_number = ost->st->nb_frames;
 +        fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
 +                ost->quality / (float)FF_QP2LAMBDA);
 +
 +        if (enc->coded_frame && (enc->flags & AV_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 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
 +        if (ti1 < 0.01)
 +            ti1 = 0.01;
 +
 +        bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 +        avg_bitrate = (double)(ost->data_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)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
 +        fprintf(vstats_file, "type= %c\n", enc->coded_frame ? av_get_picture_type_char(enc->coded_frame->pict_type) : 'I');
 +    }
 +}
 +
 +static void finish_output_stream(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    int i;
 +
 +    ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
 +
 +    if (of->shortest) {
 +        for (i = 0; i < of->ctx->nb_streams; i++)
 +            output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
 +    }
 +}
 +
 +/**
 + * 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(int flush)
 +{
 +    AVFrame *filtered_frame = NULL;
 +    int i;
 +
 +    /* 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];
 +        AVFilterContext *filter;
 +        AVCodecContext *enc = ost->enc_ctx;
 +        int ret = 0;
 +
 +        if (!ost->filter)
 +            continue;
 +        filter = ost->filter->filter;
 +
 +        if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
 +            return AVERROR(ENOMEM);
 +        }
 +        filtered_frame = ost->filtered_frame;
 +
 +        while (1) {
 +            double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
 +            ret = av_buffersink_get_frame_flags(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));
 +                } else if (flush && ret == AVERROR_EOF) {
 +                    if (filter->inputs[0]->type == AVMEDIA_TYPE_VIDEO)
 +                        do_video_out(of->ctx, ost, NULL, AV_NOPTS_VALUE);
 +                }
 +                break;
 +            }
 +            if (ost->finished) {
 +                av_frame_unref(filtered_frame);
 +                continue;
 +            }
 +            if (filtered_frame->pts != AV_NOPTS_VALUE) {
 +                int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
 +                AVRational tb = enc->time_base;
 +                int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
 +
 +                tb.den <<= extra_bits;
 +                float_pts =
 +                    av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, tb) -
 +                    av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
 +                float_pts /= 1 << extra_bits;
 +                // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
 +                float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
 +
 +                filtered_frame->pts =
 +                    av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
 +                    av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
 +            }
 +            //if (ost->source_index >= 0)
 +            //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
 +
 +            switch (filter->inputs[0]->type) {
 +            case AVMEDIA_TYPE_VIDEO:
 +                if (!ost->frame_aspect_ratio.num)
 +                    enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
 +
 +                if (debug_ts) {
 +                    av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
 +                            av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
 +                            float_pts,
 +                            enc->time_base.num, enc->time_base.den);
 +                }
 +
 +                do_video_out(of->ctx, ost, filtered_frame, float_pts);
 +                break;
 +            case AVMEDIA_TYPE_AUDIO:
 +                if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
 +                    enc->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_final_stats(int64_t total_size)
 +{
 +    uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
 +    uint64_t subtitle_size = 0;
 +    uint64_t data_size = 0;
 +    float percent = -1.0;
 +    int i, j;
 +    int pass1_used = 1;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +        switch (ost->enc_ctx->codec_type) {
 +            case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
 +            case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
 +            case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
 +            default:                 other_size += ost->data_size; break;
 +        }
 +        extra_size += ost->enc_ctx->extradata_size;
 +        data_size  += ost->data_size;
 +        if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))
 +            != AV_CODEC_FLAG_PASS1)
 +            pass1_used = 0;
 +    }
 +
 +    if (data_size && total_size>0 && total_size >= data_size)
 +        percent = 100.0 * (total_size - data_size) / data_size;
 +
 +    av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
 +           video_size / 1024.0,
 +           audio_size / 1024.0,
 +           subtitle_size / 1024.0,
 +           other_size / 1024.0,
 +           extra_size / 1024.0);
 +    if (percent >= 0.0)
 +        av_log(NULL, AV_LOG_INFO, "%f%%", percent);
 +    else
 +        av_log(NULL, AV_LOG_INFO, "unknown");
 +    av_log(NULL, AV_LOG_INFO, "\n");
 +
 +    /* print verbose per-stream stats */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +        uint64_t total_packets = 0, total_size = 0;
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
 +               i, f->ctx->filename);
 +
 +        for (j = 0; j < f->nb_streams; j++) {
 +            InputStream *ist = input_streams[f->ist_index + j];
 +            enum AVMediaType type = ist->dec_ctx->codec_type;
 +
 +            total_size    += ist->data_size;
 +            total_packets += ist->nb_packets;
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
 +                   i, j, media_type_string(type));
 +            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
 +                   ist->nb_packets, ist->data_size);
 +
 +            if (ist->decoding_needed) {
 +                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
 +                       ist->frames_decoded);
 +                if (type == AVMEDIA_TYPE_AUDIO)
 +                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
 +                av_log(NULL, AV_LOG_VERBOSE, "; ");
 +            }
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "\n");
 +        }
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
 +               total_packets, total_size);
 +    }
 +
 +    for (i = 0; i < nb_output_files; i++) {
 +        OutputFile *of = output_files[i];
 +        uint64_t total_packets = 0, total_size = 0;
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
 +               i, of->ctx->filename);
 +
 +        for (j = 0; j < of->ctx->nb_streams; j++) {
 +            OutputStream *ost = output_streams[of->ost_index + j];
 +            enum AVMediaType type = ost->enc_ctx->codec_type;
 +
 +            total_size    += ost->data_size;
 +            total_packets += ost->packets_written;
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
 +                   i, j, media_type_string(type));
 +            if (ost->encoding_needed) {
 +                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
 +                       ost->frames_encoded);
 +                if (type == AVMEDIA_TYPE_AUDIO)
 +                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
 +                av_log(NULL, AV_LOG_VERBOSE, "; ");
 +            }
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
 +                   ost->packets_written, ost->data_size);
 +
 +            av_log(NULL, AV_LOG_VERBOSE, "\n");
 +        }
 +
 +        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
 +               total_packets, total_size);
 +    }
 +    if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
 +        av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
 +        if (pass1_used) {
 +            av_log(NULL, AV_LOG_WARNING, "\n");
 +        } else {
 +            av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
 +        }
 +    }
 +}
 +
 +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->enc_ctx;
 +        if (!ost->stream_copy)
 +            q = ost->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 & AV_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 (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
 +            pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
 +                                          ost->st->time_base, AV_TIME_BASE_Q));
 +        if (is_last_report)
 +            nb_frames_drop += ost->last_droped;
 +    }
 +
 +    secs = FFABS(pts) / AV_TIME_BASE;
 +    us = FFABS(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);
 +    if (pts < 0)
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
 +    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");
 +        av_bprintf(&buf_script, "bitrate=N/A\n");
 +    }else{
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
 +        av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", 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) {
 +        const char end = is_last_report ? '\n' : '\r';
 +        if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
 +            fprintf(stderr, "%s    %c", buf, end);
 +        } else
 +            av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
 +
 +    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_closep(&progress_avio);
 +        }
 +    }
 +
 +    if (is_last_report)
 +        print_final_stats(total_size);
 +}
 +
 +static void flush_encoders(void)
 +{
 +    int i, ret;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream   *ost = output_streams[i];
 +        AVCodecContext *enc = ost->enc_ctx;
 +        AVFormatContext *os = output_files[ost->file_index]->ctx;
 +        int stop_encoding = 0;
 +
 +        if (!ost->encoding_needed)
 +            continue;
 +
 +        if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
 +            continue;
 +        if (enc->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;
 +
 +            switch (enc->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                encode = avcodec_encode_audio2;
 +                desc   = "Audio";
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                encode = avcodec_encode_video2;
 +                desc   = "Video";
 +                break;
 +            default:
 +                stop_encoding = 1;
 +            }
 +
 +            if (encode) {
 +                AVPacket pkt;
 +                int pkt_size;
 +                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);
 +                }
 +                if (ost->logfile && enc->stats_out) {
 +                    fprintf(ost->logfile, "%s", enc->stats_out);
 +                }
 +                if (!got_packet) {
 +                    stop_encoding = 1;
 +                    break;
 +                }
 +                if (ost->finished & MUXER_FINISHED) {
 +                    av_free_packet(&pkt);
 +                    continue;
 +                }
 +                av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
 +                pkt_size = pkt.size;
 +                write_frame(os, &pkt, ost);
 +                if (ost->enc_ctx->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 (ost->finished)
 +        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->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
 +        ost->sync_opts++;
 +
 +    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->dec_ctx, pkt->size);
 +        if(!duration)
 +            duration = ist->dec_ctx->frame_size;
 +        opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
 +                                               (AVRational){1, ist->dec_ctx->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->enc_ctx->codec_id != AV_CODEC_ID_H264
 +       && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
 +       && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
 +       && ost->enc_ctx->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);
 +}
 +
 +int guess_input_channel_layout(InputStream *ist)
 +{
 +    AVCodecContext *dec = ist->dec_ctx;
 +
 +    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->dec_ctx;
 +    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)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (ret < 0 && exit_on_error)
 +        exit_program(1);
 +
 +    if (!*got_output || ret < 0)
 +        return ret;
 +
 +    ist->samples_decoded += decoded_frame->nb_samples;
 +    ist->frames_decoded++;
 +
 +#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];
 +                if (configure_filtergraph(fg) < 0) {
 +                    av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
 +                    exit_program(1);
 +                }
 +            }
 +    }
 +
 +    /* 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;
 +        decoded_frame_tb   = ist->st->time_base;
 +    } else if (pkt->pts != AV_NOPTS_VALUE) {
 +        decoded_frame->pts = pkt->pts;
 +        decoded_frame_tb   = ist->st->time_base;
 +    }else {
 +        decoded_frame->pts = ist->dts;
 +        decoded_frame_tb   = AV_TIME_BASE_Q;
 +    }
 +    pkt->pts           = AV_NOPTS_VALUE;
 +    if (decoded_frame->pts != AV_NOPTS_VALUE)
 +        decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
 +                                              (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
 +                                              (AVRational){1, avctx->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->dec_ctx,
 +                                decoded_frame, got_output, pkt);
 +    update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
 +
 +    // The following line may be required in some cases where there is no parser
 +    // or the parser does not has_b_frames correctly
 +    if (ist->st->codec->has_b_frames < ist->dec_ctx->has_b_frames) {
 +        if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
 +            ist->st->codec->has_b_frames = ist->dec_ctx->has_b_frames;
 +        } else
 +            av_log_ask_for_sample(
 +                ist->dec_ctx,
 +                "has_b_frames is larger in decoder than demuxer %d > %d ",
 +                ist->dec_ctx->has_b_frames,
 +                ist->st->codec->has_b_frames
 +            );
 +    }
 +
 +    if (*got_output || ret<0)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (ret < 0 && exit_on_error)
 +        exit_program(1);
 +
 +    if (*got_output && ret >= 0) {
 +        if (ist->dec_ctx->width  != decoded_frame->width ||
 +            ist->dec_ctx->height != decoded_frame->height ||
 +            ist->dec_ctx->pix_fmt != decoded_frame->format) {
 +            av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
 +                decoded_frame->width,
 +                decoded_frame->height,
 +                decoded_frame->format,
 +                ist->dec_ctx->width,
 +                ist->dec_ctx->height,
 +                ist->dec_ctx->pix_fmt);
 +        }
 +    }
 +
 +    if (!*got_output || ret < 0)
 +        return ret;
 +
 +    if(ist->top_field_first>=0)
 +        decoded_frame->top_field_first = ist->top_field_first;
 +
 +    ist->frames_decoded++;
 +
 +    if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
 +        err = ist->hwaccel_retrieve_data(ist->dec_ctx, 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 time_base:%d/%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,
 +               ist->st->time_base.num, ist->st->time_base.den);
 +    }
 +
 +    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->dec_ctx,
 +                                          &subtitle, got_output, pkt);
 +
 +    if (*got_output || ret<0)
 +        decode_error_stat[ret<0] ++;
 +
 +    if (ret < 0 && exit_on_error)
 +        exit_program(1);
 +
 +    if (ret < 0 || !*got_output) {
 +        if (!pkt->size)
 +            sub2video_flush(ist);
 +        return ret;
 +    }
 +
 +    if (ist->fix_sub_duration) {
 +        int end = 1;
 +        if (ist->prev_sub.got_output) {
 +            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->dec_ctx, AV_LOG_DEBUG,
 +                       "Subtitle duration reduced from %d to %d%s\n",
 +                       ist->prev_sub.subtitle.end_display_time, end,
 +                       end <= 0 ? ", dropping it" : "");
 +                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);
 +        if (end <= 0)
 +            goto out;
 +    }
 +
 +    if (!*got_output)
 +        return ret;
 +
 +    sub2video_update(ist, &subtitle);
 +
 +    if (!subtitle.num_rects)
 +        goto out;
 +
 +    ist->frames_decoded++;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +
 +        if (!check_output_constraints(ist, ost) || !ost->encoding_needed
 +            || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
 +            continue;
 +
 +        do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
 +    }
 +
 +out:
 +    avsubtitle_free(&subtitle);
 +    return ret;
 +}
 +
 +static int send_filter_eof(InputStream *ist)
 +{
 +    int i, ret;
 +    for (i = 0; i < ist->nb_filters; i++) {
 +#if 1
 +        ret = av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 +#else
 +        ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
 +#endif
 +        if (ret < 0)
 +            return ret;
 +    }
 +    return 0;
 +}
 +
 +/* pkt = NULL means EOF (needed to flush decoder buffers) */
 +static int process_input_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->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
 +        ist->pts = 0;
 +        if (pkt && 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) {
 +        /* 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->dec_ctx->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 &&
 +            !(ist->dec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
 +            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->dec_ctx->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->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
 +                int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
 +                duration = ((int64_t)AV_TIME_BASE *
 +                                ist->dec_ctx->framerate.den * ticks) /
 +                                ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
 +            } 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) {
 +            av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
 +                   ist->file_index, ist->st->index, av_err2str(ret));
 +            if (exit_on_error)
 +                exit_program(1);
 +            break;
 +        }
 +
 +        avpkt.dts=
 +        avpkt.pts= AV_NOPTS_VALUE;
 +
 +        // touch data and size only if not EOF
 +        if (pkt) {
 +            if(ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO)
 +                ret = avpkt.size;
 +            avpkt.data += ret;
 +            avpkt.size -= ret;
 +        }
 +        if (!got_output) {
 +            continue;
 +        }
 +        if (got_output && !pkt)
 +            break;
 +    }
 +
 +    /* after flushing, send an EOF on all the filter inputs attached to the stream */
 +    if (!pkt && ist->decoding_needed && !got_output) {
 +        int ret = send_filter_eof(ist);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
 +            exit_program(1);
 +        }
 +    }
 +
 +    /* handle stream copy */
 +    if (!ist->decoding_needed) {
 +        ist->dts = ist->next_dts;
 +        switch (ist->dec_ctx->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
 +                             ist->dec_ctx->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->dec_ctx->framerate.num != 0) {
 +                int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
 +                ist->next_dts += ((int64_t)AV_TIME_BASE *
 +                                  ist->dec_ctx->framerate.den * ticks) /
 +                                  ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
 +            }
 +            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 got_output;
 +}
 +
 +static void print_sdp(void)
 +{
 +    char sdp[16384];
 +    int i;
 +    int j;
 +    AVIOContext *sdp_pb;
 +    AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
 +
 +    if (!avc)
 +        exit_program(1);
 +    for (i = 0, j = 0; i < nb_output_files; i++) {
 +        if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
 +            avc[j] = output_files[i]->ctx;
 +            j++;
 +        }
 +    }
 +
 +    av_sdp_create(avc, j, sdp, sizeof(sdp));
 +
 +    if (!sdp_filename) {
 +        printf("SDP:\n%s\n", sdp);
 +        fflush(stdout);
 +    } else {
 +        if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
 +        } else {
 +            avio_printf(sdp_pb, "SDP:\n%s", sdp);
 +            avio_closep(&sdp_pb);
 +            av_freep(&sdp_filename);
 +        }
 +    }
 +
 +    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);
 +                return AV_PIX_FMT_NONE;
 +            }
 +            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->dec_ctx->codec_id), ist->file_index, ist->st->index);
 +            return AVERROR(EINVAL);
 +        }
 +
 +        ist->dec_ctx->opaque                = ist;
 +        ist->dec_ctx->get_format            = get_format;
 +        ist->dec_ctx->get_buffer2           = get_buffer;
 +        ist->dec_ctx->thread_safe_callbacks = 1;
 +
 +        av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
 +        if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
 +           (ist->decoding_needed & DECODING_FOR_OST)) {
 +            av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
 +            if (ist->decoding_needed & DECODING_FOR_FILTER)
 +                av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
 +        }
 +
 +        if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
 +            av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
 +        if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
 +            if (ret == AVERROR_EXPERIMENTAL)
 +                abort_codec_experimental(codec, 0);
 +
 +            snprintf(error, error_len,
 +                     "Error while opening decoder for input stream "
 +                     "#%d:%d : %s",
 +                     ist->file_index, ist->st->index, av_err2str(ret));
 +            return ret;
 +        }
 +        assert_avoptions(ist->decoder_opts);
 +    }
 +
 +    ist->next_pts = AV_NOPTS_VALUE;
 +    ist->next_dts = AV_NOPTS_VALUE;
 +
 +    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 int init_output_stream(OutputStream *ost, char *error, int error_len)
 +{
 +    int ret = 0;
 +
 +    if (ost->encoding_needed) {
 +        AVCodec      *codec = ost->enc;
 +        AVCodecContext *dec = NULL;
 +        InputStream *ist;
 +
 +        if ((ist = get_input_stream(ost)))
 +            dec = ist->dec_ctx;
 +        if (dec && dec->subtitle_header) {
 +            /* ASS code assumes this buffer is null terminated so add extra byte. */
 +            ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
 +            if (!ost->enc_ctx->subtitle_header)
 +                return AVERROR(ENOMEM);
 +            memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
 +            ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
 +        }
 +        if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
 +            av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
 +        av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);
 +
 +        if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
 +            if (ret == AVERROR_EXPERIMENTAL)
 +                abort_codec_experimental(codec, 1);
 +            snprintf(error, error_len,
 +                     "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);
 +            return ret;
 +        }
 +        if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
 +            !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
 +            av_buffersink_set_frame_size(ost->filter->filter,
 +                                            ost->enc_ctx->frame_size);
 +        assert_avoptions(ost->encoder_opts);
 +        if (ost->enc_ctx->bit_rate && ost->enc_ctx->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");
 +
 +        ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL,
 +                   "Error initializing the output stream codec context.\n");
 +            exit_program(1);
 +        }
 +
 +        // copy timebase while removing common factors
 +        ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
 +        ost->st->codec->codec= ost->enc_ctx->codec;
 +    } else {
 +        ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
 +        if (ret < 0) {
 +           av_log(NULL, AV_LOG_FATAL,
 +                  "Error setting up codec context options.\n");
 +           return ret;
 +        }
 +        // copy timebase while removing common factors
 +        ost->st->time_base = av_add_q(ost->st->codec->time_base, (AVRational){0, 1});
 +    }
 +
 +    return ret;
 +}
 +
 +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_array(size, sizeof(*pts));
 +    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 void set_encoder_id(OutputFile *of, OutputStream *ost)
 +{
 +    AVDictionaryEntry *e;
 +
 +    uint8_t *encoder_string;
 +    int encoder_string_len;
 +    int format_flags = 0;
 +    int codec_flags = 0;
 +
 +    if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
 +        return;
 +
 +    e = av_dict_get(of->opts, "fflags", NULL, 0);
 +    if (e) {
 +        const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
 +        if (!o)
 +            return;
 +        av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
 +    }
 +    e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
 +    if (e) {
 +        const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
 +        if (!o)
 +            return;
 +        av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
 +    }
 +
 +    encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
 +    encoder_string     = av_mallocz(encoder_string_len);
 +    if (!encoder_string)
 +        exit_program(1);
 +
 +    if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
 +        av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
 +    else
 +        av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
 +    av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
 +    av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
 +                AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
 +}
 +
 +static int transcode_init(void)
 +{
 +    int ret = 0, i, j, k;
 +    AVFormatContext *oc;
 +    OutputStream *ost;
 +    InputStream *ist;
 +    char error[1024] = {0};
 +    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_relative();
 +    }
 +
 +    /* for each output stream, we compute the right encoding parameters */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        AVCodecContext *enc_ctx;
 +        AVCodecContext *dec_ctx = NULL;
 +        ost = output_streams[i];
 +        oc  = output_files[ost->file_index]->ctx;
 +        ist = get_input_stream(ost);
 +
 +        if (ost->attachment_filename)
 +            continue;
 +
 +        enc_ctx = ost->stream_copy ? ost->st->codec : ost->enc_ctx;
 +
 +        if (ist) {
 +            dec_ctx = ist->dec_ctx;
 +
 +            ost->st->disposition          = ist->st->disposition;
 +            enc_ctx->bits_per_raw_sample    = dec_ctx->bits_per_raw_sample;
 +            enc_ctx->chroma_sample_location = dec_ctx->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 == enc_ctx->codec_type)
 +                    break;
 +            }
 +            if (j == oc->nb_streams)
 +                if (enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || enc_ctx->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)dec_ctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE;
 +
 +            if (extra_size > INT_MAX) {
 +                return AVERROR(EINVAL);
 +            }
 +
 +            /* if stream_copy is selected, no need to decode or encode */
 +            enc_ctx->codec_id   = dec_ctx->codec_id;
 +            enc_ctx->codec_type = dec_ctx->codec_type;
 +
 +            if (!enc_ctx->codec_tag) {
 +                unsigned int codec_tag;
 +                if (!oc->oformat->codec_tag ||
 +                     av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
 +                     !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
 +                    enc_ctx->codec_tag = dec_ctx->codec_tag;
 +            }
 +
 +            enc_ctx->bit_rate       = dec_ctx->bit_rate;
 +            enc_ctx->rc_max_rate    = dec_ctx->rc_max_rate;
 +            enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
 +            enc_ctx->field_order    = dec_ctx->field_order;
 +            if (dec_ctx->extradata_size) {
 +                enc_ctx->extradata      = av_mallocz(extra_size);
 +                if (!enc_ctx->extradata) {
 +                    return AVERROR(ENOMEM);
 +                }
 +                memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
 +            }
 +            enc_ctx->extradata_size= dec_ctx->extradata_size;
 +            enc_ctx->bits_per_coded_sample  = dec_ctx->bits_per_coded_sample;
 +
 +            enc_ctx->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(dec_ctx->time_base)
 +                               && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
 +                     || copy_tb==2){
 +                    enc_ctx->time_base.num = ist->st->r_frame_rate.den;
 +                    enc_ctx->time_base.den = 2*ist->st->r_frame_rate.num;
 +                    enc_ctx->ticks_per_frame = 2;
 +                } else if (   copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
 +                                 && av_q2d(ist->st->time_base) < 1.0/500
 +                    || copy_tb==0){
 +                    enc_ctx->time_base = dec_ctx->time_base;
 +                    enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
 +                    enc_ctx->time_base.den *= 2;
 +                    enc_ctx->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 && dec_ctx->time_base.den
 +                                && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
 +                                && av_q2d(ist->st->time_base) < 1.0/500
 +                   || copy_tb==0){
 +                    enc_ctx->time_base = dec_ctx->time_base;
 +                    enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
 +                }
 +            }
 +            if (   enc_ctx->codec_tag == AV_RL32("tmcd")
 +                && dec_ctx->time_base.num < dec_ctx->time_base.den
 +                && dec_ctx->time_base.num > 0
 +                && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
 +                enc_ctx->time_base = dec_ctx->time_base;
 +            }
 +
 +            if (ist && !ost->frame_rate.num)
 +                ost->frame_rate = ist->framerate;
 +            if(ost->frame_rate.num)
 +                enc_ctx->time_base = av_inv_q(ost->frame_rate);
 +
 +            av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
 +                        enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
 +
 +            if (ist->st->nb_side_data) {
 +                ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
 +                                                      sizeof(*ist->st->side_data));
 +                if (!ost->st->side_data)
 +                    return AVERROR(ENOMEM);
 +
 +                ost->st->nb_side_data = 0;
 +                for (j = 0; j < ist->st->nb_side_data; j++) {
 +                    const AVPacketSideData *sd_src = &ist->st->side_data[j];
 +                    AVPacketSideData *sd_dst = &ost->st->side_data[ost->st->nb_side_data];
 +
 +                    if (ost->rotate_overridden && sd_src->type == AV_PKT_DATA_DISPLAYMATRIX)
 +                        continue;
 +
 +                    sd_dst->data = av_malloc(sd_src->size);
 +                    if (!sd_dst->data)
 +                        return AVERROR(ENOMEM);
 +                    memcpy(sd_dst->data, sd_src->data, sd_src->size);
 +                    sd_dst->size = sd_src->size;
 +                    sd_dst->type = sd_src->type;
 +                    ost->st->nb_side_data++;
 +                }
 +            }
 +
 +            ost->parser = av_parser_init(enc_ctx->codec_id);
 +
 +            switch (enc_ctx->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);
 +                }
 +                enc_ctx->channel_layout     = dec_ctx->channel_layout;
 +                enc_ctx->sample_rate        = dec_ctx->sample_rate;
 +                enc_ctx->channels           = dec_ctx->channels;
 +                enc_ctx->frame_size         = dec_ctx->frame_size;
 +                enc_ctx->audio_service_type = dec_ctx->audio_service_type;
 +                enc_ctx->block_align        = dec_ctx->block_align;
 +                enc_ctx->initial_padding    = dec_ctx->delay;
 +#if FF_API_AUDIOENC_DELAY
 +                enc_ctx->delay              = dec_ctx->delay;
 +#endif
 +                if((enc_ctx->block_align == 1 || enc_ctx->block_align == 1152 || enc_ctx->block_align == 576) && enc_ctx->codec_id == AV_CODEC_ID_MP3)
 +                    enc_ctx->block_align= 0;
 +                if(enc_ctx->codec_id == AV_CODEC_ID_AC3)
 +                    enc_ctx->block_align= 0;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                enc_ctx->pix_fmt            = dec_ctx->pix_fmt;
 +                enc_ctx->width              = dec_ctx->width;
 +                enc_ctx->height             = dec_ctx->height;
 +                enc_ctx->has_b_frames       = dec_ctx->has_b_frames;
 +                if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
 +                    sar =
 +                        av_mul_q(ost->frame_aspect_ratio,
 +                                 (AVRational){ enc_ctx->height, enc_ctx->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 = dec_ctx->sample_aspect_ratio;
 +                ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
 +                ost->st->avg_frame_rate = ist->st->avg_frame_rate;
 +                ost->st->r_frame_rate = ist->st->r_frame_rate;
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                enc_ctx->width  = dec_ctx->width;
 +                enc_ctx->height = dec_ctx->height;
 +                break;
 +            case AVMEDIA_TYPE_UNKNOWN:
 +            case AVMEDIA_TYPE_DATA:
 +            case AVMEDIA_TYPE_ATTACHMENT:
 +                break;
 +            default:
 +                abort();
 +            }
 +        } else {
 +            if (!ost->enc)
 +                ost->enc = avcodec_find_encoder(enc_ctx->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;
 +            }
 +
 +            set_encoder_id(output_files[ost->file_index], ost);
 +
 +            if (!ost->filter &&
 +                (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
 +                 enc_ctx->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 (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
 +                if (!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;
 +                if (ist && !ost->frame_rate.num) {
 +                    ost->frame_rate = (AVRational){25, 1};
 +                    av_log(NULL, AV_LOG_WARNING,
 +                           "No information "
 +                           "about the input framerate is available. Falling "
 +                           "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
 +                           "if you want a different framerate.\n",
 +                           ost->file_index, ost->index);
 +                }
 +//                    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];
 +                }
 +                // reduce frame rate for mpeg4 to be within the spec limits
 +                if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
 +                    av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
 +                              ost->frame_rate.num, ost->frame_rate.den, 65535);
 +                }
 +            }
 +
 +            switch (enc_ctx->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                enc_ctx->sample_fmt     = ost->filter->filter->inputs[0]->format;
 +                enc_ctx->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
 +                enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
 +                enc_ctx->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
 +                enc_ctx->time_base      = (AVRational){ 1, enc_ctx->sample_rate };
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                enc_ctx->time_base = av_inv_q(ost->frame_rate);
 +                if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
 +                    enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
 +                if (   av_q2d(enc_ctx->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,
 +                                                         enc_ctx->time_base);
 +
 +                enc_ctx->width  = ost->filter->filter->inputs[0]->w;
 +                enc_ctx->height = ost->filter->filter->inputs[0]->h;
 +                enc_ctx->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){ enc_ctx->height, enc_ctx->width }) :
 +                    ost->filter->filter->inputs[0]->sample_aspect_ratio;
 +                if (!strncmp(ost->enc->name, "libx264", 7) &&
 +                    enc_ctx->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) &&
 +                    enc_ctx->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));
 +                enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
 +
 +                ost->st->avg_frame_rate = ost->frame_rate;
 +
 +                if (!dec_ctx ||
 +                    enc_ctx->width   != dec_ctx->width  ||
 +                    enc_ctx->height  != dec_ctx->height ||
 +                    enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
 +                    enc_ctx->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;
 +
 +                        // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
 +                        // parse it only for static kf timings
 +                    } else if(strncmp(ost->forced_keyframes, "source", 6)) {
 +                        parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
 +                    }
 +                }
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                enc_ctx->time_base = (AVRational){1, 1000};
 +                if (!enc_ctx->width) {
 +                    enc_ctx->width     = input_streams[ost->source_index]->st->codec->width;
 +                    enc_ctx->height    = input_streams[ost->source_index]->st->codec->height;
 +                }
 +                break;
 +            case AVMEDIA_TYPE_DATA:
 +                break;
 +            default:
 +                abort();
 +                break;
 +            }
 +        }
 +
 +        if (ost->disposition) {
 +            static const AVOption opts[] = {
 +                { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
 +                { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
 +                { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
 +                { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
 +                { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
 +                { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
 +                { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
 +                { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
 +                { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
 +                { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
 +                { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
 +                { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
 +                { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
 +                { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
 +                { NULL },
 +            };
 +            static const AVClass class = {
 +                .class_name = "",
 +                .item_name  = av_default_item_name,
 +                .option     = opts,
 +                .version    = LIBAVUTIL_VERSION_INT,
 +            };
 +            const AVClass *pclass = &class;
 +
 +            ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
 +            if (ret < 0)
 +                goto dump_format;
 +        }
 +    }
 +
 +    /* open each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ret = init_output_stream(output_streams[i], error, sizeof(error));
 +        if (ret < 0)
 +            goto dump_format;
 +    }
 +
 +    /* 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->enc_ctx);
 +            }
 +            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) {
 +            snprintf(error, sizeof(error),
 +                     "Could not write header for output file #%d "
 +                     "(incorrect codec parameters ?): %s",
 +                     i, av_err2str(ret));
 +            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 {
 +            const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
 +            const AVCodec *out_codec   = ost->enc;
 +            const char *decoder_name   = "?";
 +            const char *in_codec_name  = "?";
 +            const char *encoder_name   = "?";
 +            const char *out_codec_name = "?";
 +            const AVCodecDescriptor *desc;
 +
 +            if (in_codec) {
 +                decoder_name  = in_codec->name;
 +                desc = avcodec_descriptor_get(in_codec->id);
 +                if (desc)
 +                    in_codec_name = desc->name;
 +                if (!strcmp(decoder_name, in_codec_name))
 +                    decoder_name = "native";
 +            }
 +
 +            if (out_codec) {
 +                encoder_name   = out_codec->name;
 +                desc = avcodec_descriptor_get(out_codec->id);
 +                if (desc)
 +                    out_codec_name = desc->name;
 +                if (!strcmp(encoder_name, out_codec_name))
 +                    encoder_name = "native";
 +            }
 +
 +            av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
 +                   in_codec_name, decoder_name,
 +                   out_codec_name, encoder_name);
 +        }
 +        av_log(NULL, AV_LOG_INFO, "\n");
 +    }
 +
 +    if (ret) {
 +        av_log(NULL, AV_LOG_ERROR, "%s\n", error);
 +        return ret;
 +    }
 +
 +    if (sdp_filename || want_sdp) {
 +        print_sdp();
 +    }
 +
 +    transcode_init_done = 1;
 +
 +    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->finished && opts < opts_min) {
 +            opts_min = opts;
 +            ost_min  = ost->unavailable ? NULL : 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);
 +                        if (ret < 0)
 +                            fprintf(stderr, "Queing command failed with error %s\n", av_err2str(ret));
 +                    }
 +                }
 +            }
 +        } 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->enc_ctx->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;
 +    unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
 +    int ret = 0;
 +
 +    while (1) {
 +        AVPacket pkt;
 +        ret = av_read_frame(f->ctx, &pkt);
 +
 +        if (ret == AVERROR(EAGAIN)) {
 +            av_usleep(10000);
 +            continue;
 +        }
 +        if (ret < 0) {
 +            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
 +            break;
 +        }
 +        av_dup_packet(&pkt);
 +        ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
 +        if (flags && ret == AVERROR(EAGAIN)) {
 +            flags = 0;
 +            ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
 +            av_log(f->ctx, AV_LOG_WARNING,
 +                   "Thread message queue blocking; consider raising the "
 +                   "thread_queue_size option (current value: %d)\n",
 +                   f->thread_queue_size);
 +        }
 +        if (ret < 0) {
 +            if (ret != AVERROR_EOF)
 +                av_log(f->ctx, AV_LOG_ERROR,
 +                       "Unable to send packet to main thread: %s\n",
 +                       av_err2str(ret));
 +            av_free_packet(&pkt);
 +            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
 +            break;
 +        }
 +    }
 +
 +    return NULL;
 +}
 +
 +static void free_input_threads(void)
 +{
 +    int i;
 +
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +        AVPacket pkt;
 +
 +        if (!f || !f->in_thread_queue)
 +            continue;
 +        av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
 +        while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
 +            av_free_packet(&pkt);
 +
 +        pthread_join(f->thread, NULL);
 +        f->joined = 1;
 +        av_thread_message_queue_free(&f->in_thread_queue);
 +    }
 +}
 +
 +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->ctx->pb ? !f->ctx->pb->seekable :
 +            strcmp(f->ctx->iformat->name, "lavfi"))
 +            f->non_blocking = 1;
 +        ret = av_thread_message_queue_alloc(&f->in_thread_queue,
 +                                            f->thread_queue_size, sizeof(AVPacket));
 +        if (ret < 0)
 +            return ret;
 +
 +        if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
 +            av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
 +            av_thread_message_queue_free(&f->in_thread_queue);
 +            return AVERROR(ret);
 +        }
 +    }
 +    return 0;
 +}
 +
 +static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
 +{
 +    return av_thread_message_queue_recv(f->in_thread_queue, pkt,
 +                                        f->non_blocking ?
 +                                        AV_THREAD_MESSAGE_NONBLOCK : 0);
 +}
 +#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_relative() - 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);
 +        }
 +
 +        for (i = 0; i < ifile->nb_streams; i++) {
 +            ist = input_streams[ifile->ist_index + i];
 +            if (ist->decoding_needed) {
 +                ret = process_input_packet(ist, NULL);
 +                if (ret>0)
 +                    return 0;
 +            }
 +
 +            /* 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))
 +                    finish_output_stream(ost);
 +            }
 +        }
 +
 +        ifile->eof_reached = 1;
 +        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];
 +
 +    ist->data_size += pkt.size;
 +    ist->nb_packets++;
 +
 +    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->dec_ctx->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;
 +        }
 +    }
 +
 +    /* add the stream-global side data to the first packet */
 +    if (ist->nb_packets == 1) {
 +        if (ist->st->nb_side_data)
 +            av_packet_split_side_data(&pkt);
 +        for (i = 0; i < ist->st->nb_side_data; i++) {
 +            AVPacketSideData *src_sd = &ist->st->side_data[i];
 +            uint8_t *dst_data;
 +
 +            if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
 +                continue;
 +            if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
 +                continue;
 +
 +            dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
 +            if (!dst_data)
 +                exit_program(1);
 +
 +            memcpy(dst_data, src_sd->data, src_sd->size);
 +        }
 +    }
 +
 +    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 ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
 +         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
 +        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){
 +            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 ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
 +         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
 +         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 ||
 +                pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
 +                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) {
 +                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) {
 +                    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->dec_ctx->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);
 +
 +    process_input_packet(ist, &pkt);
 +
 +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(0);
 +
 +    if (ret == AVERROR_EOF) {
 +        ret = reap_filters(1);
 +        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(0);
 +}
 +
 +/*
 + * 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_relative();
 +
 +#if HAVE_PTHREADS
 +    if ((ret = init_input_threads()) < 0)
 +        goto fail;
 +#endif
 +
 +    while (!received_sigterm) {
 +        int64_t cur_time= av_gettime_relative();
 +
 +        /* 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;
 +            } else {
 +                char errbuf[128];
 +                av_strerror(ret, errbuf, sizeof(errbuf));
 +
 +                av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
 +                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) {
 +            process_input_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_relative());
 +
 +    /* close each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +        if (ost->encoding_needed) {
 +            av_freep(&ost->enc_ctx->stats_in);
 +        }
 +    }
 +
 +    /* close each decoder */
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +        if (ist->decoding_needed) {
 +            avcodec_close(ist->dec_ctx);
 +            if (ist->hwaccel_uninit)
 +                ist->hwaccel_uninit(ist->dec_ctx);
 +        }
 +    }
 +
 +    /* 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->logfile) {
 +                    fclose(ost->logfile);
 +                    ost->logfile = NULL;
 +                }
 +                av_freep(&ost->forced_kf_pts);
 +                av_freep(&ost->apad);
 +                av_freep(&ost->disposition);
 +                av_dict_free(&ost->encoder_opts);
 +                av_dict_free(&ost->swr_opts);
 +                av_dict_free(&ost->resample_opts);
 +                av_dict_free(&ost->bsf_args);
 +            }
 +        }
 +    }
 +    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_relative();
 +#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) {
 +        av_log(NULL, AV_LOG_INFO, "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 : main_return_code);
 +    return main_return_code;
 +}
diff --cc ffserver.c
index c74cd15,0000000..5c8810a
mode 100644,000000..100644
--- /dev/null
@@@ -1,3871 -1,0 +1,3871 @@@
-                     st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
 +/*
 + * Copyright (c) 2000, 2001, 2002 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
 + * multiple format streaming server based on the FFmpeg libraries
 + */
 +
 +#include "config.h"
 +#if !HAVE_CLOSESOCKET
 +#define closesocket close
 +#endif
 +#include <string.h>
 +#include <stdlib.h>
 +#include <stdio.h>
 +#include "libavformat/avformat.h"
 +/* FIXME: those are internal headers, ffserver _really_ shouldn't use them */
 +#include "libavformat/ffm.h"
 +#include "libavformat/network.h"
 +#include "libavformat/os_support.h"
 +#include "libavformat/rtpdec.h"
 +#include "libavformat/rtpproto.h"
 +#include "libavformat/rtsp.h"
 +#include "libavformat/rtspcodes.h"
 +#include "libavformat/avio_internal.h"
 +#include "libavformat/internal.h"
 +#include "libavformat/url.h"
 +
 +#include "libavutil/avassert.h"
 +#include "libavutil/avstring.h"
 +#include "libavutil/lfg.h"
 +#include "libavutil/dict.h"
 +#include "libavutil/intreadwrite.h"
 +#include "libavutil/mathematics.h"
 +#include "libavutil/random_seed.h"
 +#include "libavutil/parseutils.h"
 +#include "libavutil/opt.h"
 +#include "libavutil/time.h"
 +
 +#include <stdarg.h>
 +#if HAVE_UNISTD_H
 +#include <unistd.h>
 +#endif
 +#include <fcntl.h>
 +#include <sys/ioctl.h>
 +#if HAVE_POLL_H
 +#include <poll.h>
 +#endif
 +#include <errno.h>
 +#include <time.h>
 +#include <sys/wait.h>
 +#include <signal.h>
 +
 +#include "cmdutils.h"
 +#include "ffserver_config.h"
 +
 +const char program_name[] = "ffserver";
 +const int program_birth_year = 2000;
 +
 +static const OptionDef options[];
 +
 +enum HTTPState {
 +    HTTPSTATE_WAIT_REQUEST,
 +    HTTPSTATE_SEND_HEADER,
 +    HTTPSTATE_SEND_DATA_HEADER,
 +    HTTPSTATE_SEND_DATA,          /* sending TCP or UDP data */
 +    HTTPSTATE_SEND_DATA_TRAILER,
 +    HTTPSTATE_RECEIVE_DATA,
 +    HTTPSTATE_WAIT_FEED,          /* wait for data from the feed */
 +    HTTPSTATE_READY,
 +
 +    RTSPSTATE_WAIT_REQUEST,
 +    RTSPSTATE_SEND_REPLY,
 +    RTSPSTATE_SEND_PACKET,
 +};
 +
 +static const char * const http_state[] = {
 +    "HTTP_WAIT_REQUEST",
 +    "HTTP_SEND_HEADER",
 +
 +    "SEND_DATA_HEADER",
 +    "SEND_DATA",
 +    "SEND_DATA_TRAILER",
 +    "RECEIVE_DATA",
 +    "WAIT_FEED",
 +    "READY",
 +
 +    "RTSP_WAIT_REQUEST",
 +    "RTSP_SEND_REPLY",
 +    "RTSP_SEND_PACKET",
 +};
 +
 +#define IOBUFFER_INIT_SIZE 8192
 +
 +/* timeouts are in ms */
 +#define HTTP_REQUEST_TIMEOUT (15 * 1000)
 +#define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000)
 +
 +#define SYNC_TIMEOUT (10 * 1000)
 +
 +typedef struct RTSPActionServerSetup {
 +    uint32_t ipaddr;
 +    char transport_option[512];
 +} RTSPActionServerSetup;
 +
 +typedef struct {
 +    int64_t count1, count2;
 +    int64_t time1, time2;
 +} DataRateData;
 +
 +/* context associated with one connection */
 +typedef struct HTTPContext {
 +    enum HTTPState state;
 +    int fd; /* socket file descriptor */
 +    struct sockaddr_in from_addr; /* origin */
 +    struct pollfd *poll_entry; /* used when polling */
 +    int64_t timeout;
 +    uint8_t *buffer_ptr, *buffer_end;
 +    int http_error;
 +    int post;
 +    int chunked_encoding;
 +    int chunk_size;               /* 0 if it needs to be read */
 +    struct HTTPContext *next;
 +    int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
 +    int64_t data_count;
 +    /* feed input */
 +    int feed_fd;
 +    /* input format handling */
 +    AVFormatContext *fmt_in;
 +    int64_t start_time;            /* In milliseconds - this wraps fairly often */
 +    int64_t first_pts;            /* initial pts value */
 +    int64_t cur_pts;             /* current pts value from the stream in us */
 +    int64_t cur_frame_duration;  /* duration of the current frame in us */
 +    int cur_frame_bytes;       /* output frame size, needed to compute
 +                                  the time at which we send each
 +                                  packet */
 +    int pts_stream_index;        /* stream we choose as clock reference */
 +    int64_t cur_clock;           /* current clock reference value in us */
 +    /* output format handling */
 +    struct FFServerStream *stream;
 +    /* -1 is invalid stream */
 +    int feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */
 +    int switch_feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */
 +    int switch_pending;
 +    AVFormatContext fmt_ctx; /* instance of FFServerStream for one user */
 +    int last_packet_sent; /* true if last data packet was sent */
 +    int suppress_log;
 +    DataRateData datarate;
 +    int wmp_client_id;
 +    char protocol[16];
 +    char method[16];
 +    char url[128];
 +    int buffer_size;
 +    uint8_t *buffer;
 +    int is_packetized; /* if true, the stream is packetized */
 +    int packet_stream_index; /* current stream for output in state machine */
 +
 +    /* RTSP state specific */
 +    uint8_t *pb_buffer; /* XXX: use that in all the code */
 +    AVIOContext *pb;
 +    int seq; /* RTSP sequence number */
 +
 +    /* RTP state specific */
 +    enum RTSPLowerTransport rtp_protocol;
 +    char session_id[32]; /* session id */
 +    AVFormatContext *rtp_ctx[FFSERVER_MAX_STREAMS];
 +
 +    /* RTP/UDP specific */
 +    URLContext *rtp_handles[FFSERVER_MAX_STREAMS];
 +
 +    /* RTP/TCP specific */
 +    struct HTTPContext *rtsp_c;
 +    uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end;
 +} HTTPContext;
 +
 +typedef struct FeedData {
 +    long long data_count;
 +    float avg_frame_size;   /* frame size averaged over last frames with exponential mean */
 +} FeedData;
 +
 +static HTTPContext *first_http_ctx;
 +
 +static FFServerConfig config = {
 +    .nb_max_http_connections = 2000,
 +    .nb_max_connections = 5,
 +    .max_bandwidth = 1000,
 +    .use_defaults = 1,
 +};
 +
 +static void new_connection(int server_fd, int is_rtsp);
 +static void close_connection(HTTPContext *c);
 +
 +/* HTTP handling */
 +static int handle_connection(HTTPContext *c);
 +static inline void print_stream_params(AVIOContext *pb, FFServerStream *stream);
 +static void compute_status(HTTPContext *c);
 +static int open_input_stream(HTTPContext *c, const char *info);
 +static int http_parse_request(HTTPContext *c);
 +static int http_send_data(HTTPContext *c);
 +static int http_start_receive_data(HTTPContext *c);
 +static int http_receive_data(HTTPContext *c);
 +
 +/* RTSP handling */
 +static int rtsp_parse_request(HTTPContext *c);
 +static void rtsp_cmd_describe(HTTPContext *c, const char *url);
 +static void rtsp_cmd_options(HTTPContext *c, const char *url);
 +static void rtsp_cmd_setup(HTTPContext *c, const char *url,
 +                           RTSPMessageHeader *h);
 +static void rtsp_cmd_play(HTTPContext *c, const char *url,
 +                          RTSPMessageHeader *h);
 +static void rtsp_cmd_interrupt(HTTPContext *c, const char *url,
 +                               RTSPMessageHeader *h, int pause_only);
 +
 +/* SDP handling */
 +static int prepare_sdp_description(FFServerStream *stream, uint8_t **pbuffer,
 +                                   struct in_addr my_ip);
 +
 +/* RTP handling */
 +static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
 +                                       FFServerStream *stream,
 +                                       const char *session_id,
 +                                       enum RTSPLowerTransport rtp_protocol);
 +static int rtp_new_av_stream(HTTPContext *c,
 +                             int stream_index, struct sockaddr_in *dest_addr,
 +                             HTTPContext *rtsp_c);
 +
 +static const char *my_program_name;
 +
 +static int no_launch;
 +static int need_to_start_children;
 +
 +/* maximum number of simultaneous HTTP connections */
 +static unsigned int nb_connections;
 +
 +static uint64_t current_bandwidth;
 +
 +/* Making this global saves on passing it around everywhere */
 +static int64_t cur_time;
 +
 +static AVLFG random_state;
 +
 +static FILE *logfile = NULL;
 +
 +static void htmlstrip(char *s) {
 +    while (s && *s) {
 +        s += strspn(s, "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,. ");
 +        if (*s)
 +            *s++ = '?';
 +    }
 +}
 +
 +static int64_t ffm_read_write_index(int fd)
 +{
 +    uint8_t buf[8];
 +
 +    if (lseek(fd, 8, SEEK_SET) < 0)
 +        return AVERROR(EIO);
 +    if (read(fd, buf, 8) != 8)
 +        return AVERROR(EIO);
 +    return AV_RB64(buf);
 +}
 +
 +static int ffm_write_write_index(int fd, int64_t pos)
 +{
 +    uint8_t buf[8];
 +    int i;
 +
 +    for(i=0;i<8;i++)
 +        buf[i] = (pos >> (56 - i * 8)) & 0xff;
 +    if (lseek(fd, 8, SEEK_SET) < 0)
 +        return AVERROR(EIO);
 +    if (write(fd, buf, 8) != 8)
 +        return AVERROR(EIO);
 +    return 8;
 +}
 +
 +static void ffm_set_write_index(AVFormatContext *s, int64_t pos,
 +                                int64_t file_size)
 +{
 +    FFMContext *ffm = s->priv_data;
 +    ffm->write_index = pos;
 +    ffm->file_size = file_size;
 +}
 +
 +static char *ctime1(char *buf2, int buf_size)
 +{
 +    time_t ti;
 +    char *p;
 +
 +    ti = time(NULL);
 +    p = ctime(&ti);
 +    av_strlcpy(buf2, p, buf_size);
 +    p = buf2 + strlen(p) - 1;
 +    if (*p == '\n')
 +        *p = '\0';
 +    return buf2;
 +}
 +
 +static void http_vlog(const char *fmt, va_list vargs)
 +{
 +    static int print_prefix = 1;
 +    char buf[32];
 +
 +    if (!logfile)
 +        return;
 +
 +    if (print_prefix) {
 +        ctime1(buf, sizeof(buf));
 +        fprintf(logfile, "%s ", buf);
 +    }
 +    print_prefix = strstr(fmt, "\n") != NULL;
 +    vfprintf(logfile, fmt, vargs);
 +    fflush(logfile);
 +}
 +
 +#ifdef __GNUC__
 +__attribute__ ((format (printf, 1, 2)))
 +#endif
 +static void http_log(const char *fmt, ...)
 +{
 +    va_list vargs;
 +    va_start(vargs, fmt);
 +    http_vlog(fmt, vargs);
 +    va_end(vargs);
 +}
 +
 +static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs)
 +{
 +    static int print_prefix = 1;
 +    AVClass *avc = ptr ? *(AVClass**)ptr : NULL;
 +    if (level > av_log_get_level())
 +        return;
 +    if (print_prefix && avc)
 +        http_log("[%s @ %p]", avc->item_name(ptr), ptr);
 +    print_prefix = strstr(fmt, "\n") != NULL;
 +    http_vlog(fmt, vargs);
 +}
 +
 +static void log_connection(HTTPContext *c)
 +{
 +    if (c->suppress_log)
 +        return;
 +
 +    http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n",
 +             inet_ntoa(c->from_addr.sin_addr), c->method, c->url,
 +             c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
 +}
 +
 +static void update_datarate(DataRateData *drd, int64_t count)
 +{
 +    if (!drd->time1 && !drd->count1) {
 +        drd->time1 = drd->time2 = cur_time;
 +        drd->count1 = drd->count2 = count;
 +    } else if (cur_time - drd->time2 > 5000) {
 +        drd->time1 = drd->time2;
 +        drd->count1 = drd->count2;
 +        drd->time2 = cur_time;
 +        drd->count2 = count;
 +    }
 +}
 +
 +/* In bytes per second */
 +static int compute_datarate(DataRateData *drd, int64_t count)
 +{
 +    if (cur_time == drd->time1)
 +        return 0;
 +
 +    return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
 +}
 +
 +
 +static void start_children(FFServerStream *feed)
 +{
 +    char pathname[1024];
 +    char *slash;
 +    int i;
 +
 +    if (no_launch)
 +        return;
 +
 +   /* replace "ffserver" with "ffmpeg" in the path of current
 +    * program. Ignore user provided path */
 +    av_strlcpy(pathname, my_program_name, sizeof(pathname));
 +
 +    slash = strrchr(pathname, '/');
 +    if (!slash)
 +        slash = pathname;
 +    else
 +        slash++;
 +    strcpy(slash, "ffmpeg");
 +
 +    for (; feed; feed = feed->next) {
 +
 +        if (!feed->child_argv || feed->pid)
 +            continue;
 +
 +        feed->pid_start = time(0);
 +
 +        feed->pid = fork();
 +        if (feed->pid < 0) {
 +            http_log("Unable to create children\n");
 +            exit(1);
 +        }
 +
 +        if (feed->pid)
 +            continue;
 +
 +        /* In child */
 +
 +        http_log("Launch command line: ");
 +        http_log("%s ", pathname);
 +
 +        for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++)
 +            http_log("%s ", feed->child_argv[i]);
 +        http_log("\n");
 +
 +        for (i = 3; i < 256; i++)
 +            close(i);
 +
 +        if (!config.debug) {
 +            if (!freopen("/dev/null", "r", stdin))
 +                http_log("failed to redirect STDIN to /dev/null\n;");
 +            if (!freopen("/dev/null", "w", stdout))
 +                http_log("failed to redirect STDOUT to /dev/null\n;");
 +            if (!freopen("/dev/null", "w", stderr))
 +                http_log("failed to redirect STDERR to /dev/null\n;");
 +        }
 +
 +        signal(SIGPIPE, SIG_DFL);
 +        execvp(pathname, feed->child_argv);
 +        _exit(1);
 +    }
 +}
 +
 +/* open a listening socket */
 +static int socket_open_listen(struct sockaddr_in *my_addr)
 +{
 +    int server_fd, tmp;
 +
 +    server_fd = socket(AF_INET,SOCK_STREAM,0);
 +    if (server_fd < 0) {
 +        perror ("socket");
 +        return -1;
 +    }
 +
 +    tmp = 1;
 +    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp)))
 +        av_log(NULL, AV_LOG_WARNING, "setsockopt SO_REUSEADDR failed\n");
 +
 +    my_addr->sin_family = AF_INET;
 +    if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
 +        char bindmsg[32];
 +        snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)",
 +                 ntohs(my_addr->sin_port));
 +        perror (bindmsg);
 +        closesocket(server_fd);
 +        return -1;
 +    }
 +
 +    if (listen (server_fd, 5) < 0) {
 +        perror ("listen");
 +        closesocket(server_fd);
 +        return -1;
 +    }
 +
 +    if (ff_socket_nonblock(server_fd, 1) < 0)
 +        av_log(NULL, AV_LOG_WARNING, "ff_socket_nonblock failed\n");
 +
 +    return server_fd;
 +}
 +
 +/* start all multicast streams */
 +static void start_multicast(void)
 +{
 +    FFServerStream *stream;
 +    char session_id[32];
 +    HTTPContext *rtp_c;
 +    struct sockaddr_in dest_addr = {0};
 +    int default_port, stream_index;
 +    unsigned int random0, random1;
 +
 +    default_port = 6000;
 +    for(stream = config.first_stream; stream; stream = stream->next) {
 +
 +        if (!stream->is_multicast)
 +            continue;
 +
 +        random0 = av_lfg_get(&random_state);
 +        random1 = av_lfg_get(&random_state);
 +
 +        /* open the RTP connection */
 +        snprintf(session_id, sizeof(session_id), "%08x%08x", random0, random1);
 +
 +        /* choose a port if none given */
 +        if (stream->multicast_port == 0) {
 +            stream->multicast_port = default_port;
 +            default_port += 100;
 +        }
 +
 +        dest_addr.sin_family = AF_INET;
 +        dest_addr.sin_addr = stream->multicast_ip;
 +        dest_addr.sin_port = htons(stream->multicast_port);
 +
 +        rtp_c = rtp_new_connection(&dest_addr, stream, session_id,
 +                                   RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
 +        if (!rtp_c)
 +            continue;
 +
 +        if (open_input_stream(rtp_c, "") < 0) {
 +            http_log("Could not open input stream for stream '%s'\n",
 +                     stream->filename);
 +            continue;
 +        }
 +
 +        /* open each RTP stream */
 +        for(stream_index = 0; stream_index < stream->nb_streams;
 +            stream_index++) {
 +            dest_addr.sin_port = htons(stream->multicast_port +
 +                                       2 * stream_index);
 +            if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) >= 0)
 +                continue;
 +
 +            http_log("Could not open output stream '%s/streamid=%d'\n",
 +                     stream->filename, stream_index);
 +            exit(1);
 +        }
 +
 +        rtp_c->state = HTTPSTATE_SEND_DATA;
 +    }
 +}
 +
 +/* main loop of the HTTP server */
 +static int http_server(void)
 +{
 +    int server_fd = 0, rtsp_server_fd = 0;
 +    int ret, delay;
 +    struct pollfd *poll_table, *poll_entry;
 +    HTTPContext *c, *c_next;
 +
 +    poll_table = av_mallocz_array(config.nb_max_http_connections + 2,
 +                                  sizeof(*poll_table));
 +    if(!poll_table) {
 +        http_log("Impossible to allocate a poll table handling %d "
 +                 "connections.\n", config.nb_max_http_connections);
 +        return -1;
 +    }
 +
 +    if (config.http_addr.sin_port) {
 +        server_fd = socket_open_listen(&config.http_addr);
 +        if (server_fd < 0) {
 +            av_free(poll_table);
 +            return -1;
 +        }
 +    }
 +
 +    if (config.rtsp_addr.sin_port) {
 +        rtsp_server_fd = socket_open_listen(&config.rtsp_addr);
 +        if (rtsp_server_fd < 0) {
 +            av_free(poll_table);
 +            closesocket(server_fd);
 +            return -1;
 +        }
 +    }
 +
 +    if (!rtsp_server_fd && !server_fd) {
 +        http_log("HTTP and RTSP disabled.\n");
 +        av_free(poll_table);
 +        return -1;
 +    }
 +
 +    http_log("FFserver started.\n");
 +
 +    start_children(config.first_feed);
 +
 +    start_multicast();
 +
 +    for(;;) {
 +        poll_entry = poll_table;
 +        if (server_fd) {
 +            poll_entry->fd = server_fd;
 +            poll_entry->events = POLLIN;
 +            poll_entry++;
 +        }
 +        if (rtsp_server_fd) {
 +            poll_entry->fd = rtsp_server_fd;
 +            poll_entry->events = POLLIN;
 +            poll_entry++;
 +        }
 +
 +        /* wait for events on each HTTP handle */
 +        c = first_http_ctx;
 +        delay = 1000;
 +        while (c) {
 +            int fd;
 +            fd = c->fd;
 +            switch(c->state) {
 +            case HTTPSTATE_SEND_HEADER:
 +            case RTSPSTATE_SEND_REPLY:
 +            case RTSPSTATE_SEND_PACKET:
 +                c->poll_entry = poll_entry;
 +                poll_entry->fd = fd;
 +                poll_entry->events = POLLOUT;
 +                poll_entry++;
 +                break;
 +            case HTTPSTATE_SEND_DATA_HEADER:
 +            case HTTPSTATE_SEND_DATA:
 +            case HTTPSTATE_SEND_DATA_TRAILER:
 +                if (!c->is_packetized) {
 +                    /* for TCP, we output as much as we can
 +                     * (may need to put a limit) */
 +                    c->poll_entry = poll_entry;
 +                    poll_entry->fd = fd;
 +                    poll_entry->events = POLLOUT;
 +                    poll_entry++;
 +                } else {
 +                    /* when ffserver is doing the timing, we work by
 +                     * looking at which packet needs to be sent every
 +                     * 10 ms (one tick wait XXX: 10 ms assumed) */
 +                    if (delay > 10)
 +                        delay = 10;
 +                }
 +                break;
 +            case HTTPSTATE_WAIT_REQUEST:
 +            case HTTPSTATE_RECEIVE_DATA:
 +            case HTTPSTATE_WAIT_FEED:
 +            case RTSPSTATE_WAIT_REQUEST:
 +                /* need to catch errors */
 +                c->poll_entry = poll_entry;
 +                poll_entry->fd = fd;
 +                poll_entry->events = POLLIN;/* Maybe this will work */
 +                poll_entry++;
 +                break;
 +            default:
 +                c->poll_entry = NULL;
 +                break;
 +            }
 +            c = c->next;
 +        }
 +
 +        /* wait for an event on one connection. We poll at least every
 +         * second to handle timeouts */
 +        do {
 +            ret = poll(poll_table, poll_entry - poll_table, delay);
 +            if (ret < 0 && ff_neterrno() != AVERROR(EAGAIN) &&
 +                ff_neterrno() != AVERROR(EINTR)) {
 +                av_free(poll_table);
 +                return -1;
 +            }
 +        } while (ret < 0);
 +
 +        cur_time = av_gettime() / 1000;
 +
 +        if (need_to_start_children) {
 +            need_to_start_children = 0;
 +            start_children(config.first_feed);
 +        }
 +
 +        /* now handle the events */
 +        for(c = first_http_ctx; c; c = c_next) {
 +            c_next = c->next;
 +            if (handle_connection(c) < 0) {
 +                log_connection(c);
 +                /* close and free the connection */
 +                close_connection(c);
 +            }
 +        }
 +
 +        poll_entry = poll_table;
 +        if (server_fd) {
 +            /* new HTTP connection request ? */
 +            if (poll_entry->revents & POLLIN)
 +                new_connection(server_fd, 0);
 +            poll_entry++;
 +        }
 +        if (rtsp_server_fd) {
 +            /* new RTSP connection request ? */
 +            if (poll_entry->revents & POLLIN)
 +                new_connection(rtsp_server_fd, 1);
 +        }
 +    }
 +}
 +
 +/* start waiting for a new HTTP/RTSP request */
 +static void start_wait_request(HTTPContext *c, int is_rtsp)
 +{
 +    c->buffer_ptr = c->buffer;
 +    c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */
 +
 +    c->state = is_rtsp ? RTSPSTATE_WAIT_REQUEST : HTTPSTATE_WAIT_REQUEST;
 +    c->timeout = cur_time +
 +                 (is_rtsp ? RTSP_REQUEST_TIMEOUT : HTTP_REQUEST_TIMEOUT);
 +}
 +
 +static void http_send_too_busy_reply(int fd)
 +{
 +    char buffer[400];
 +    int len = snprintf(buffer, sizeof(buffer),
 +                       "HTTP/1.0 503 Server too busy\r\n"
 +                       "Content-type: text/html\r\n"
 +                       "\r\n"
 +                       "<html><head><title>Too busy</title></head><body>\r\n"
 +                       "<p>The server is too busy to serve your request at this time.</p>\r\n"
 +                       "<p>The number of current connections is %u, and this exceeds the limit of %u.</p>\r\n"
 +                       "</body></html>\r\n",
 +                       nb_connections, config.nb_max_connections);
 +    av_assert0(len < sizeof(buffer));
 +    if (send(fd, buffer, len, 0) < len)
 +        av_log(NULL, AV_LOG_WARNING,
 +               "Could not send too-busy reply, send() failed\n");
 +}
 +
 +
 +static void new_connection(int server_fd, int is_rtsp)
 +{
 +    struct sockaddr_in from_addr;
 +    socklen_t len;
 +    int fd;
 +    HTTPContext *c = NULL;
 +
 +    len = sizeof(from_addr);
 +    fd = accept(server_fd, (struct sockaddr *)&from_addr,
 +                &len);
 +    if (fd < 0) {
 +        http_log("error during accept %s\n", strerror(errno));
 +        return;
 +    }
 +    if (ff_socket_nonblock(fd, 1) < 0)
 +        av_log(NULL, AV_LOG_WARNING, "ff_socket_nonblock failed\n");
 +
 +    if (nb_connections >= config.nb_max_connections) {
 +        http_send_too_busy_reply(fd);
 +        goto fail;
 +    }
 +
 +    /* add a new connection */
 +    c = av_mallocz(sizeof(HTTPContext));
 +    if (!c)
 +        goto fail;
 +
 +    c->fd = fd;
 +    c->poll_entry = NULL;
 +    c->from_addr = from_addr;
 +    c->buffer_size = IOBUFFER_INIT_SIZE;
 +    c->buffer = av_malloc(c->buffer_size);
 +    if (!c->buffer)
 +        goto fail;
 +
 +    c->next = first_http_ctx;
 +    first_http_ctx = c;
 +    nb_connections++;
 +
 +    start_wait_request(c, is_rtsp);
 +
 +    return;
 +
 + fail:
 +    if (c) {
 +        av_freep(&c->buffer);
 +        av_free(c);
 +    }
 +    closesocket(fd);
 +}
 +
 +static void close_connection(HTTPContext *c)
 +{
 +    HTTPContext **cp, *c1;
 +    int i, nb_streams;
 +    AVFormatContext *ctx;
 +    AVStream *st;
 +
 +    /* remove connection from list */
 +    cp = &first_http_ctx;
 +    while (*cp) {
 +        c1 = *cp;
 +        if (c1 == c)
 +            *cp = c->next;
 +        else
 +            cp = &c1->next;
 +    }
 +
 +    /* remove references, if any (XXX: do it faster) */
 +    for(c1 = first_http_ctx; c1; c1 = c1->next) {
 +        if (c1->rtsp_c == c)
 +            c1->rtsp_c = NULL;
 +    }
 +
 +    /* remove connection associated resources */
 +    if (c->fd >= 0)
 +        closesocket(c->fd);
 +    if (c->fmt_in) {
 +        /* close each frame parser */
 +        for(i=0;i<c->fmt_in->nb_streams;i++) {
 +            st = c->fmt_in->streams[i];
 +            if (st->codec->codec)
 +                avcodec_close(st->codec);
 +        }
 +        avformat_close_input(&c->fmt_in);
 +    }
 +
 +    /* free RTP output streams if any */
 +    nb_streams = 0;
 +    if (c->stream)
 +        nb_streams = c->stream->nb_streams;
 +
 +    for(i=0;i<nb_streams;i++) {
 +        ctx = c->rtp_ctx[i];
 +        if (ctx) {
 +            av_write_trailer(ctx);
 +            av_dict_free(&ctx->metadata);
 +            av_freep(&ctx->streams[0]);
 +            av_freep(&ctx);
 +        }
 +        ffurl_close(c->rtp_handles[i]);
 +    }
 +
 +    ctx = &c->fmt_ctx;
 +
 +    if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) {
 +        /* prepare header */
 +        if (ctx->oformat && avio_open_dyn_buf(&ctx->pb) >= 0) {
 +            av_write_trailer(ctx);
 +            av_freep(&c->pb_buffer);
 +            avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
 +        }
 +    }
 +
 +    for(i=0; i<ctx->nb_streams; i++)
 +        av_freep(&ctx->streams[i]);
 +    av_freep(&ctx->streams);
 +    av_freep(&ctx->priv_data);
 +
 +    if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE)
 +        current_bandwidth -= c->stream->bandwidth;
 +
 +    /* signal that there is no feed if we are the feeder socket */
 +    if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) {
 +        c->stream->feed_opened = 0;
 +        close(c->feed_fd);
 +    }
 +
 +    av_freep(&c->pb_buffer);
 +    av_freep(&c->packet_buffer);
 +    av_freep(&c->buffer);
 +    av_free(c);
 +    nb_connections--;
 +}
 +
 +static int handle_connection(HTTPContext *c)
 +{
 +    int len, ret;
 +    uint8_t *ptr;
 +
 +    switch(c->state) {
 +    case HTTPSTATE_WAIT_REQUEST:
 +    case RTSPSTATE_WAIT_REQUEST:
 +        /* timeout ? */
 +        if ((c->timeout - cur_time) < 0)
 +            return -1;
 +        if (c->poll_entry->revents & (POLLERR | POLLHUP))
 +            return -1;
 +
 +        /* no need to read if no events */
 +        if (!(c->poll_entry->revents & POLLIN))
 +            return 0;
 +        /* read the data */
 +    read_loop:
 +        if (!(len = recv(c->fd, c->buffer_ptr, 1, 0)))
 +            return -1;
 +
 +        if (len < 0) {
 +            if (ff_neterrno() != AVERROR(EAGAIN) &&
 +                ff_neterrno() != AVERROR(EINTR))
 +                return -1;
 +            break;
 +        }
 +        /* search for end of request. */
 +        c->buffer_ptr += len;
 +        ptr = c->buffer_ptr;
 +        if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
 +            (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
 +            /* request found : parse it and reply */
 +            if (c->state == HTTPSTATE_WAIT_REQUEST)
 +                ret = http_parse_request(c);
 +            else
 +                ret = rtsp_parse_request(c);
 +
 +            if (ret < 0)
 +                return -1;
 +        } else if (ptr >= c->buffer_end) {
 +            /* request too long: cannot do anything */
 +            return -1;
 +        } else goto read_loop;
 +
 +        break;
 +
 +    case HTTPSTATE_SEND_HEADER:
 +        if (c->poll_entry->revents & (POLLERR | POLLHUP))
 +            return -1;
 +
 +        /* no need to write if no events */
 +        if (!(c->poll_entry->revents & POLLOUT))
 +            return 0;
 +        len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
 +        if (len < 0) {
 +            if (ff_neterrno() != AVERROR(EAGAIN) &&
 +                ff_neterrno() != AVERROR(EINTR)) {
 +                goto close_connection;
 +            }
 +            break;
 +        }
 +        c->buffer_ptr += len;
 +        if (c->stream)
 +            c->stream->bytes_served += len;
 +        c->data_count += len;
 +        if (c->buffer_ptr >= c->buffer_end) {
 +            av_freep(&c->pb_buffer);
 +            /* if error, exit */
 +            if (c->http_error)
 +                return -1;
 +            /* all the buffer was sent : synchronize to the incoming
 +             * stream */
 +            c->state = HTTPSTATE_SEND_DATA_HEADER;
 +            c->buffer_ptr = c->buffer_end = c->buffer;
 +        }
 +        break;
 +
 +    case HTTPSTATE_SEND_DATA:
 +    case HTTPSTATE_SEND_DATA_HEADER:
 +    case HTTPSTATE_SEND_DATA_TRAILER:
 +        /* for packetized output, we consider we can always write (the
 +         * input streams set the speed). It may be better to verify
 +         * that we do not rely too much on the kernel queues */
 +        if (!c->is_packetized) {
 +            if (c->poll_entry->revents & (POLLERR | POLLHUP))
 +                return -1;
 +
 +            /* no need to read if no events */
 +            if (!(c->poll_entry->revents & POLLOUT))
 +                return 0;
 +        }
 +        if (http_send_data(c) < 0)
 +            return -1;
 +        /* close connection if trailer sent */
 +        if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
 +            return -1;
 +        /* Check if it is a single jpeg frame 123 */
 +        if (c->stream->single_frame && c->data_count > c->cur_frame_bytes && c->cur_frame_bytes > 0) {
 +            close_connection(c);
 +        }
 +        break;
 +    case HTTPSTATE_RECEIVE_DATA:
 +        /* no need to read if no events */
 +        if (c->poll_entry->revents & (POLLERR | POLLHUP))
 +            return -1;
 +        if (!(c->poll_entry->revents & POLLIN))
 +            return 0;
 +        if (http_receive_data(c) < 0)
 +            return -1;
 +        break;
 +    case HTTPSTATE_WAIT_FEED:
 +        /* no need to read if no events */
 +        if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
 +            return -1;
 +
 +        /* nothing to do, we'll be waken up by incoming feed packets */
 +        break;
 +
 +    case RTSPSTATE_SEND_REPLY:
 +        if (c->poll_entry->revents & (POLLERR | POLLHUP))
 +            goto close_connection;
 +        /* no need to write if no events */
 +        if (!(c->poll_entry->revents & POLLOUT))
 +            return 0;
 +        len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
 +        if (len < 0) {
 +            if (ff_neterrno() != AVERROR(EAGAIN) &&
 +                ff_neterrno() != AVERROR(EINTR)) {
 +                goto close_connection;
 +            }
 +            break;
 +        }
 +        c->buffer_ptr += len;
 +        c->data_count += len;
 +        if (c->buffer_ptr >= c->buffer_end) {
 +            /* all the buffer was sent : wait for a new request */
 +            av_freep(&c->pb_buffer);
 +            start_wait_request(c, 1);
 +        }
 +        break;
 +    case RTSPSTATE_SEND_PACKET:
 +        if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
 +            av_freep(&c->packet_buffer);
 +            return -1;
 +        }
 +        /* no need to write if no events */
 +        if (!(c->poll_entry->revents & POLLOUT))
 +            return 0;
 +        len = send(c->fd, c->packet_buffer_ptr,
 +                    c->packet_buffer_end - c->packet_buffer_ptr, 0);
 +        if (len < 0) {
 +            if (ff_neterrno() != AVERROR(EAGAIN) &&
 +                ff_neterrno() != AVERROR(EINTR)) {
 +                /* error : close connection */
 +                av_freep(&c->packet_buffer);
 +                return -1;
 +            }
 +            break;
 +        }
 +        c->packet_buffer_ptr += len;
 +        if (c->packet_buffer_ptr >= c->packet_buffer_end) {
 +            /* all the buffer was sent : wait for a new request */
 +            av_freep(&c->packet_buffer);
 +            c->state = RTSPSTATE_WAIT_REQUEST;
 +        }
 +        break;
 +    case HTTPSTATE_READY:
 +        /* nothing to do */
 +        break;
 +    default:
 +        return -1;
 +    }
 +    return 0;
 +
 +close_connection:
 +    av_freep(&c->pb_buffer);
 +    return -1;
 +}
 +
 +static int extract_rates(char *rates, int ratelen, const char *request)
 +{
 +    const char *p;
 +
 +    for (p = request; *p && *p != '\r' && *p != '\n'; ) {
 +        if (av_strncasecmp(p, "Pragma:", 7) == 0) {
 +            const char *q = p + 7;
 +
 +            while (*q && *q != '\n' && av_isspace(*q))
 +                q++;
 +
 +            if (av_strncasecmp(q, "stream-switch-entry=", 20) == 0) {
 +                int stream_no;
 +                int rate_no;
 +
 +                q += 20;
 +
 +                memset(rates, 0xff, ratelen);
 +
 +                while (1) {
 +                    while (*q && *q != '\n' && *q != ':')
 +                        q++;
 +
 +                    if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2)
 +                        break;
 +
 +                    stream_no--;
 +                    if (stream_no < ratelen && stream_no >= 0)
 +                        rates[stream_no] = rate_no;
 +
 +                    while (*q && *q != '\n' && !av_isspace(*q))
 +                        q++;
 +                }
 +
 +                return 1;
 +            }
 +        }
 +        p = strchr(p, '\n');
 +        if (!p)
 +            break;
 +
 +        p++;
 +    }
 +
 +    return 0;
 +}
 +
 +static int find_stream_in_feed(FFServerStream *feed, AVCodecContext *codec,
 +                               int bit_rate)
 +{
 +    int i;
 +    int best_bitrate = 100000000;
 +    int best = -1;
 +
 +    for (i = 0; i < feed->nb_streams; i++) {
 +        AVCodecContext *feed_codec = feed->streams[i]->codec;
 +
 +        if (feed_codec->codec_id != codec->codec_id ||
 +            feed_codec->sample_rate != codec->sample_rate ||
 +            feed_codec->width != codec->width ||
 +            feed_codec->height != codec->height)
 +            continue;
 +
 +        /* Potential stream */
 +
 +        /* We want the fastest stream less than bit_rate, or the slowest
 +         * faster than bit_rate
 +         */
 +
 +        if (feed_codec->bit_rate <= bit_rate) {
 +            if (best_bitrate > bit_rate ||
 +                feed_codec->bit_rate > best_bitrate) {
 +                best_bitrate = feed_codec->bit_rate;
 +                best = i;
 +            }
 +            continue;
 +        }
 +        if (feed_codec->bit_rate < best_bitrate) {
 +            best_bitrate = feed_codec->bit_rate;
 +            best = i;
 +        }
 +    }
 +    return best;
 +}
 +
 +static int modify_current_stream(HTTPContext *c, char *rates)
 +{
 +    int i;
 +    FFServerStream *req = c->stream;
 +    int action_required = 0;
 +
 +    /* Not much we can do for a feed */
 +    if (!req->feed)
 +        return 0;
 +
 +    for (i = 0; i < req->nb_streams; i++) {
 +        AVCodecContext *codec = req->streams[i]->codec;
 +
 +        switch(rates[i]) {
 +            case 0:
 +                c->switch_feed_streams[i] = req->feed_streams[i];
 +                break;
 +            case 1:
 +                c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
 +                break;
 +            case 2:
 +                /* Wants off or slow */
 +                c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
 +#ifdef WANTS_OFF
 +                /* This doesn't work well when it turns off the only stream! */
 +                c->switch_feed_streams[i] = -2;
 +                c->feed_streams[i] = -2;
 +#endif
 +                break;
 +        }
 +
 +        if (c->switch_feed_streams[i] >= 0 &&
 +            c->switch_feed_streams[i] != c->feed_streams[i]) {
 +            action_required = 1;
 +        }
 +    }
 +
 +    return action_required;
 +}
 +
 +static void get_word(char *buf, int buf_size, const char **pp)
 +{
 +    const char *p;
 +    char *q;
 +
 +    p = *pp;
 +    p += strspn(p, SPACE_CHARS);
 +    q = buf;
 +    while (!av_isspace(*p) && *p != '\0') {
 +        if ((q - buf) < buf_size - 1)
 +            *q++ = *p;
 +        p++;
 +    }
 +    if (buf_size > 0)
 +        *q = '\0';
 +    *pp = p;
 +}
 +
 +static FFServerIPAddressACL* parse_dynamic_acl(FFServerStream *stream,
 +                                               HTTPContext *c)
 +{
 +    FILE* f;
 +    char line[1024];
 +    char  cmd[1024];
 +    FFServerIPAddressACL *acl = NULL;
 +    int line_num = 0;
 +    const char *p;
 +
 +    f = fopen(stream->dynamic_acl, "r");
 +    if (!f) {
 +        perror(stream->dynamic_acl);
 +        return NULL;
 +    }
 +
 +    acl = av_mallocz(sizeof(FFServerIPAddressACL));
 +    if (!acl) {
 +        fclose(f);
 +        return NULL;
 +    }
 +
 +    /* Build ACL */
 +    while (fgets(line, sizeof(line), f)) {
 +        line_num++;
 +        p = line;
 +        while (av_isspace(*p))
 +            p++;
 +        if (*p == '\0' || *p == '#')
 +            continue;
 +        ffserver_get_arg(cmd, sizeof(cmd), &p);
 +
 +        if (!av_strcasecmp(cmd, "ACL"))
 +            ffserver_parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl,
 +                                   line_num);
 +    }
 +    fclose(f);
 +    return acl;
 +}
 +
 +
 +static void free_acl_list(FFServerIPAddressACL *in_acl)
 +{
 +    FFServerIPAddressACL *pacl, *pacl2;
 +
 +    pacl = in_acl;
 +    while(pacl) {
 +        pacl2 = pacl;
 +        pacl = pacl->next;
 +        av_freep(pacl2);
 +    }
 +}
 +
 +static int validate_acl_list(FFServerIPAddressACL *in_acl, HTTPContext *c)
 +{
 +    enum FFServerIPAddressAction last_action = IP_DENY;
 +    FFServerIPAddressACL *acl;
 +    struct in_addr *src = &c->from_addr.sin_addr;
 +    unsigned long src_addr = src->s_addr;
 +
 +    for (acl = in_acl; acl; acl = acl->next) {
 +        if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
 +            return (acl->action == IP_ALLOW) ? 1 : 0;
 +        last_action = acl->action;
 +    }
 +
 +    /* Nothing matched, so return not the last action */
 +    return (last_action == IP_DENY) ? 1 : 0;
 +}
 +
 +static int validate_acl(FFServerStream *stream, HTTPContext *c)
 +{
 +    int ret = 0;
 +    FFServerIPAddressACL *acl;
 +
 +    /* if stream->acl is null validate_acl_list will return 1 */
 +    ret = validate_acl_list(stream->acl, c);
 +
 +    if (stream->dynamic_acl[0]) {
 +        acl = parse_dynamic_acl(stream, c);
 +        ret = validate_acl_list(acl, c);
 +        free_acl_list(acl);
 +    }
 +
 +    return ret;
 +}
 +
 +/**
 + * compute the real filename of a file by matching it without its
 + * extensions to all the stream's filenames
 + */
 +static void compute_real_filename(char *filename, int max_size)
 +{
 +    char file1[1024];
 +    char file2[1024];
 +    char *p;
 +    FFServerStream *stream;
 +
 +    /* compute filename by matching without the file extensions */
 +    av_strlcpy(file1, filename, sizeof(file1));
 +    p = strrchr(file1, '.');
 +    if (p)
 +        *p = '\0';
 +    for(stream = config.first_stream; stream; stream = stream->next) {
 +        av_strlcpy(file2, stream->filename, sizeof(file2));
 +        p = strrchr(file2, '.');
 +        if (p)
 +            *p = '\0';
 +        if (!strcmp(file1, file2)) {
 +            av_strlcpy(filename, stream->filename, max_size);
 +            break;
 +        }
 +    }
 +}
 +
 +enum RedirType {
 +    REDIR_NONE,
 +    REDIR_ASX,
 +    REDIR_RAM,
 +    REDIR_ASF,
 +    REDIR_RTSP,
 +    REDIR_SDP,
 +};
 +
 +/* parse HTTP request and prepare header */
 +static int http_parse_request(HTTPContext *c)
 +{
 +    const char *p;
 +    char *p1;
 +    enum RedirType redir_type;
 +    char cmd[32];
 +    char info[1024], filename[1024];
 +    char url[1024], *q;
 +    char protocol[32];
 +    char msg[1024];
 +    const char *mime_type;
 +    FFServerStream *stream;
 +    int i;
 +    char ratebuf[32];
 +    const char *useragent = 0;
 +
 +    p = c->buffer;
 +    get_word(cmd, sizeof(cmd), &p);
 +    av_strlcpy(c->method, cmd, sizeof(c->method));
 +
 +    if (!strcmp(cmd, "GET"))
 +        c->post = 0;
 +    else if (!strcmp(cmd, "POST"))
 +        c->post = 1;
 +    else
 +        return -1;
 +
 +    get_word(url, sizeof(url), &p);
 +    av_strlcpy(c->url, url, sizeof(c->url));
 +
 +    get_word(protocol, sizeof(protocol), (const char **)&p);
 +    if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
 +        return -1;
 +
 +    av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
 +
 +    if (config.debug)
 +        http_log("%s - - New connection: %s %s\n",
 +                 inet_ntoa(c->from_addr.sin_addr), cmd, url);
 +
 +    /* find the filename and the optional info string in the request */
 +    p1 = strchr(url, '?');
 +    if (p1) {
 +        av_strlcpy(info, p1, sizeof(info));
 +        *p1 = '\0';
 +    } else
 +        info[0] = '\0';
 +
 +    av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1);
 +
 +    for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
 +        if (av_strncasecmp(p, "User-Agent:", 11) == 0) {
 +            useragent = p + 11;
 +            if (*useragent && *useragent != '\n' && av_isspace(*useragent))
 +                useragent++;
 +            break;
 +        }
 +        p = strchr(p, '\n');
 +        if (!p)
 +            break;
 +
 +        p++;
 +    }
 +
 +    redir_type = REDIR_NONE;
 +    if (av_match_ext(filename, "asx")) {
 +        redir_type = REDIR_ASX;
 +        filename[strlen(filename)-1] = 'f';
 +    } else if (av_match_ext(filename, "asf") &&
 +        (!useragent || av_strncasecmp(useragent, "NSPlayer", 8))) {
 +        /* if this isn't WMP or lookalike, return the redirector file */
 +        redir_type = REDIR_ASF;
 +    } else if (av_match_ext(filename, "rpm,ram")) {
 +        redir_type = REDIR_RAM;
 +        strcpy(filename + strlen(filename)-2, "m");
 +    } else if (av_match_ext(filename, "rtsp")) {
 +        redir_type = REDIR_RTSP;
 +        compute_real_filename(filename, sizeof(filename) - 1);
 +    } else if (av_match_ext(filename, "sdp")) {
 +        redir_type = REDIR_SDP;
 +        compute_real_filename(filename, sizeof(filename) - 1);
 +    }
 +
 +    /* "redirect" request to index.html */
 +    if (!strlen(filename))
 +        av_strlcpy(filename, "index.html", sizeof(filename) - 1);
 +
 +    stream = config.first_stream;
 +    while (stream) {
 +        if (!strcmp(stream->filename, filename) && validate_acl(stream, c))
 +            break;
 +        stream = stream->next;
 +    }
 +    if (!stream) {
 +        snprintf(msg, sizeof(msg), "File '%s' not found", url);
 +        http_log("File '%s' not found\n", url);
 +        goto send_error;
 +    }
 +
 +    c->stream = stream;
 +    memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
 +    memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
 +
 +    if (stream->stream_type == STREAM_TYPE_REDIRECT) {
 +        c->http_error = 301;
 +        q = c->buffer;
 +        snprintf(q, c->buffer_size,
 +                      "HTTP/1.0 301 Moved\r\n"
 +                      "Location: %s\r\n"
 +                      "Content-type: text/html\r\n"
 +                      "\r\n"
 +                      "<html><head><title>Moved</title></head><body>\r\n"
 +                      "You should be <a href=\"%s\">redirected</a>.\r\n"
 +                      "</body></html>\r\n",
 +                 stream->feed_filename, stream->feed_filename);
 +        q += strlen(q);
 +        /* prepare output buffer */
 +        c->buffer_ptr = c->buffer;
 +        c->buffer_end = q;
 +        c->state = HTTPSTATE_SEND_HEADER;
 +        return 0;
 +    }
 +
 +    /* If this is WMP, get the rate information */
 +    if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
 +        if (modify_current_stream(c, ratebuf)) {
 +            for (i = 0; i < FF_ARRAY_ELEMS(c->feed_streams); i++) {
 +                if (c->switch_feed_streams[i] >= 0)
 +                    c->switch_feed_streams[i] = -1;
 +            }
 +        }
 +    }
 +
 +    if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE)
 +        current_bandwidth += stream->bandwidth;
 +
 +    /* If already streaming this feed, do not let start another feeder. */
 +    if (stream->feed_opened) {
 +        snprintf(msg, sizeof(msg), "This feed is already being received.");
 +        http_log("Feed '%s' already being received\n", stream->feed_filename);
 +        goto send_error;
 +    }
 +
 +    if (c->post == 0 && config.max_bandwidth < current_bandwidth) {
 +        c->http_error = 503;
 +        q = c->buffer;
 +        snprintf(q, c->buffer_size,
 +                      "HTTP/1.0 503 Server too busy\r\n"
 +                      "Content-type: text/html\r\n"
 +                      "\r\n"
 +                      "<html><head><title>Too busy</title></head><body>\r\n"
 +                      "<p>The server is too busy to serve your request at this time.</p>\r\n"
 +                      "<p>The bandwidth being served (including your stream) is %"PRIu64"kbit/sec, "
 +                      "and this exceeds the limit of %"PRIu64"kbit/sec.</p>\r\n"
 +                      "</body></html>\r\n",
 +                 current_bandwidth, config.max_bandwidth);
 +        q += strlen(q);
 +        /* prepare output buffer */
 +        c->buffer_ptr = c->buffer;
 +        c->buffer_end = q;
 +        c->state = HTTPSTATE_SEND_HEADER;
 +        return 0;
 +    }
 +
 +    if (redir_type != REDIR_NONE) {
 +        const char *hostinfo = 0;
 +
 +        for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
 +            if (av_strncasecmp(p, "Host:", 5) == 0) {
 +                hostinfo = p + 5;
 +                break;
 +            }
 +            p = strchr(p, '\n');
 +            if (!p)
 +                break;
 +
 +            p++;
 +        }
 +
 +        if (hostinfo) {
 +            char *eoh;
 +            char hostbuf[260];
 +
 +            while (av_isspace(*hostinfo))
 +                hostinfo++;
 +
 +            eoh = strchr(hostinfo, '\n');
 +            if (eoh) {
 +                if (eoh[-1] == '\r')
 +                    eoh--;
 +
 +                if (eoh - hostinfo < sizeof(hostbuf) - 1) {
 +                    memcpy(hostbuf, hostinfo, eoh - hostinfo);
 +                    hostbuf[eoh - hostinfo] = 0;
 +
 +                    c->http_error = 200;
 +                    q = c->buffer;
 +                    switch(redir_type) {
 +                    case REDIR_ASX:
 +                        snprintf(q, c->buffer_size,
 +                                      "HTTP/1.0 200 ASX Follows\r\n"
 +                                      "Content-type: video/x-ms-asf\r\n"
 +                                      "\r\n"
 +                                      "<ASX Version=\"3\">\r\n"
 +                                      //"<!-- Autogenerated by ffserver -->\r\n"
 +                                      "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n"
 +                                      "</ASX>\r\n", hostbuf, filename, info);
 +                        q += strlen(q);
 +                        break;
 +                    case REDIR_RAM:
 +                        snprintf(q, c->buffer_size,
 +                                      "HTTP/1.0 200 RAM Follows\r\n"
 +                                      "Content-type: audio/x-pn-realaudio\r\n"
 +                                      "\r\n"
 +                                      "# Autogenerated by ffserver\r\n"
 +                                      "http://%s/%s%s\r\n", hostbuf, filename, info);
 +                        q += strlen(q);
 +                        break;
 +                    case REDIR_ASF:
 +                        snprintf(q, c->buffer_size,
 +                                      "HTTP/1.0 200 ASF Redirect follows\r\n"
 +                                      "Content-type: video/x-ms-asf\r\n"
 +                                      "\r\n"
 +                                      "[Reference]\r\n"
 +                                      "Ref1=http://%s/%s%s\r\n", hostbuf, filename, info);
 +                        q += strlen(q);
 +                        break;
 +                    case REDIR_RTSP:
 +                        {
 +                            char hostname[256], *p;
 +                            /* extract only hostname */
 +                            av_strlcpy(hostname, hostbuf, sizeof(hostname));
 +                            p = strrchr(hostname, ':');
 +                            if (p)
 +                                *p = '\0';
 +                            snprintf(q, c->buffer_size,
 +                                          "HTTP/1.0 200 RTSP Redirect follows\r\n"
 +                                          /* XXX: incorrect MIME type ? */
 +                                          "Content-type: application/x-rtsp\r\n"
 +                                          "\r\n"
 +                                          "rtsp://%s:%d/%s\r\n", hostname, ntohs(config.rtsp_addr.sin_port), filename);
 +                            q += strlen(q);
 +                        }
 +                        break;
 +                    case REDIR_SDP:
 +                        {
 +                            uint8_t *sdp_data;
 +                            int sdp_data_size;
 +                            socklen_t len;
 +                            struct sockaddr_in my_addr;
 +
 +                            snprintf(q, c->buffer_size,
 +                                          "HTTP/1.0 200 OK\r\n"
 +                                          "Content-type: application/sdp\r\n"
 +                                          "\r\n");
 +                            q += strlen(q);
 +
 +                            len = sizeof(my_addr);
 +
 +                            /* XXX: Should probably fail? */
 +                            if (getsockname(c->fd, (struct sockaddr *)&my_addr, &len))
 +                                http_log("getsockname() failed\n");
 +
 +                            /* XXX: should use a dynamic buffer */
 +                            sdp_data_size = prepare_sdp_description(stream,
 +                                                                    &sdp_data,
 +                                                                    my_addr.sin_addr);
 +                            if (sdp_data_size > 0) {
 +                                memcpy(q, sdp_data, sdp_data_size);
 +                                q += sdp_data_size;
 +                                *q = '\0';
 +                                av_free(sdp_data);
 +                            }
 +                        }
 +                        break;
 +                    default:
 +                        abort();
 +                        break;
 +                    }
 +
 +                    /* prepare output buffer */
 +                    c->buffer_ptr = c->buffer;
 +                    c->buffer_end = q;
 +                    c->state = HTTPSTATE_SEND_HEADER;
 +                    return 0;
 +                }
 +            }
 +        }
 +
 +        snprintf(msg, sizeof(msg), "ASX/RAM file not handled");
 +        goto send_error;
 +    }
 +
 +    stream->conns_served++;
 +
 +    /* XXX: add there authenticate and IP match */
 +
 +    if (c->post) {
 +        /* if post, it means a feed is being sent */
 +        if (!stream->is_feed) {
 +            /* However it might be a status report from WMP! Let us log the
 +             * data as it might come handy one day. */
 +            const char *logline = 0;
 +            int client_id = 0;
 +
 +            for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
 +                if (av_strncasecmp(p, "Pragma: log-line=", 17) == 0) {
 +                    logline = p;
 +                    break;
 +                }
 +                if (av_strncasecmp(p, "Pragma: client-id=", 18) == 0)
 +                    client_id = strtol(p + 18, 0, 10);
 +                p = strchr(p, '\n');
 +                if (!p)
 +                    break;
 +
 +                p++;
 +            }
 +
 +            if (logline) {
 +                char *eol = strchr(logline, '\n');
 +
 +                logline += 17;
 +
 +                if (eol) {
 +                    if (eol[-1] == '\r')
 +                        eol--;
 +                    http_log("%.*s\n", (int) (eol - logline), logline);
 +                    c->suppress_log = 1;
 +                }
 +            }
 +
 +#ifdef DEBUG
 +            http_log("\nGot request:\n%s\n", c->buffer);
 +#endif
 +
 +            if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
 +                HTTPContext *wmpc;
 +
 +                /* Now we have to find the client_id */
 +                for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
 +                    if (wmpc->wmp_client_id == client_id)
 +                        break;
 +                }
 +
 +                if (wmpc && modify_current_stream(wmpc, ratebuf))
 +                    wmpc->switch_pending = 1;
 +            }
 +
 +            snprintf(msg, sizeof(msg), "POST command not handled");
 +            c->stream = 0;
 +            goto send_error;
 +        }
 +        if (http_start_receive_data(c) < 0) {
 +            snprintf(msg, sizeof(msg), "could not open feed");
 +            goto send_error;
 +        }
 +        c->http_error = 0;
 +        c->state = HTTPSTATE_RECEIVE_DATA;
 +        return 0;
 +    }
 +
 +#ifdef DEBUG
 +    if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0)
 +        http_log("\nGot request:\n%s\n", c->buffer);
 +#endif
 +
 +    if (c->stream->stream_type == STREAM_TYPE_STATUS)
 +        goto send_status;
 +
 +    /* open input stream */
 +    if (open_input_stream(c, info) < 0) {
 +        snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url);
 +        goto send_error;
 +    }
 +
 +    /* prepare HTTP header */
 +    c->buffer[0] = 0;
 +    av_strlcatf(c->buffer, c->buffer_size, "HTTP/1.0 200 OK\r\n");
 +    mime_type = c->stream->fmt->mime_type;
 +    if (!mime_type)
 +        mime_type = "application/x-octet-stream";
 +    av_strlcatf(c->buffer, c->buffer_size, "Pragma: no-cache\r\n");
 +
 +    /* for asf, we need extra headers */
 +    if (!strcmp(c->stream->fmt->name,"asf_stream")) {
 +        /* Need to allocate a client id */
 +
 +        c->wmp_client_id = av_lfg_get(&random_state);
 +
 +        av_strlcatf(c->buffer, c->buffer_size, "Server: Cougar 4.1.0.3923\r\nCache-Control: no-cache\r\nPragma: client-id=%d\r\nPragma: features=\"broadcast\"\r\n", c->wmp_client_id);
 +    }
 +    av_strlcatf(c->buffer, c->buffer_size, "Content-Type: %s\r\n", mime_type);
 +    av_strlcatf(c->buffer, c->buffer_size, "\r\n");
 +    q = c->buffer + strlen(c->buffer);
 +
 +    /* prepare output buffer */
 +    c->http_error = 0;
 +    c->buffer_ptr = c->buffer;
 +    c->buffer_end = q;
 +    c->state = HTTPSTATE_SEND_HEADER;
 +    return 0;
 + send_error:
 +    c->http_error = 404;
 +    q = c->buffer;
 +    htmlstrip(msg);
 +    snprintf(q, c->buffer_size,
 +                  "HTTP/1.0 404 Not Found\r\n"
 +                  "Content-type: text/html\r\n"
 +                  "\r\n"
 +                  "<html>\n"
 +                  "<head><title>404 Not Found</title></head>\n"
 +                  "<body>%s</body>\n"
 +                  "</html>\n", msg);
 +    q += strlen(q);
 +    /* prepare output buffer */
 +    c->buffer_ptr = c->buffer;
 +    c->buffer_end = q;
 +    c->state = HTTPSTATE_SEND_HEADER;
 +    return 0;
 + send_status:
 +    compute_status(c);
 +    /* horrible: we use this value to avoid
 +     * going to the send data state */
 +    c->http_error = 200;
 +    c->state = HTTPSTATE_SEND_HEADER;
 +    return 0;
 +}
 +
 +static void fmt_bytecount(AVIOContext *pb, int64_t count)
 +{
 +    static const char suffix[] = " kMGTP";
 +    const char *s;
 +
 +    for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++);
 +
 +    avio_printf(pb, "%"PRId64"%c", count, *s);
 +}
 +
 +static inline void print_stream_params(AVIOContext *pb, FFServerStream *stream)
 +{
 +    int i, stream_no;
 +    const char *type = "unknown";
 +    char parameters[64];
 +    AVStream *st;
 +    AVCodec *codec;
 +
 +    stream_no = stream->nb_streams;
 +
 +    avio_printf(pb, "<table cellspacing=0 cellpadding=4><tr><th>Stream<th>"
 +                    "type<th>kbits/s<th align=left>codec<th align=left>"
 +                    "Parameters\n");
 +
 +    for (i = 0; i < stream_no; i++) {
 +        st = stream->streams[i];
 +        codec = avcodec_find_encoder(st->codec->codec_id);
 +
 +        parameters[0] = 0;
 +
 +        switch(st->codec->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            type = "audio";
 +            snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz",
 +                     st->codec->channels, st->codec->sample_rate);
 +            break;
 +        case AVMEDIA_TYPE_VIDEO:
 +            type = "video";
 +            snprintf(parameters, sizeof(parameters),
 +                     "%dx%d, q=%d-%d, fps=%d", st->codec->width,
 +                     st->codec->height, st->codec->qmin, st->codec->qmax,
 +                     st->codec->time_base.den / st->codec->time_base.num);
 +            break;
 +        default:
 +            abort();
 +        }
 +
 +        avio_printf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d"
 +                        "<td>%s<td>%s\n",
 +                    i, type, st->codec->bit_rate/1000,
 +                    codec ? codec->name : "", parameters);
 +     }
 +
 +     avio_printf(pb, "</table>\n");
 +}
 +
 +static void compute_status(HTTPContext *c)
 +{
 +    HTTPContext *c1;
 +    FFServerStream *stream;
 +    char *p;
 +    time_t ti;
 +    int i, len;
 +    AVIOContext *pb;
 +
 +    if (avio_open_dyn_buf(&pb) < 0) {
 +        /* XXX: return an error ? */
 +        c->buffer_ptr = c->buffer;
 +        c->buffer_end = c->buffer;
 +        return;
 +    }
 +
 +    avio_printf(pb, "HTTP/1.0 200 OK\r\n");
 +    avio_printf(pb, "Content-type: text/html\r\n");
 +    avio_printf(pb, "Pragma: no-cache\r\n");
 +    avio_printf(pb, "\r\n");
 +
 +    avio_printf(pb, "<html><head><title>%s Status</title>\n", program_name);
 +    if (c->stream->feed_filename[0])
 +        avio_printf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n",
 +                    c->stream->feed_filename);
 +    avio_printf(pb, "</head>\n<body>");
 +    avio_printf(pb, "<h1>%s Status</h1>\n", program_name);
 +    /* format status */
 +    avio_printf(pb, "<h2>Available Streams</h2>\n");
 +    avio_printf(pb, "<table cellspacing=0 cellpadding=4>\n");
 +    avio_printf(pb, "<tr><th valign=top>Path<th align=left>Served<br>Conns<th><br>bytes<th valign=top>Format<th>Bit rate<br>kbits/s<th align=left>Video<br>kbits/s<th><br>Codec<th align=left>Audio<br>kbits/s<th><br>Codec<th align=left valign=top>Feed\n");
 +    stream = config.first_stream;
 +    while (stream) {
 +        char sfilename[1024];
 +        char *eosf;
 +
 +        if (stream->feed == stream) {
 +            stream = stream->next;
 +            continue;
 +        }
 +
 +        av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10);
 +        eosf = sfilename + strlen(sfilename);
 +        if (eosf - sfilename >= 4) {
 +            if (strcmp(eosf - 4, ".asf") == 0)
 +                strcpy(eosf - 4, ".asx");
 +            else if (strcmp(eosf - 3, ".rm") == 0)
 +                strcpy(eosf - 3, ".ram");
 +            else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
 +                /* generate a sample RTSP director if
 +                 * unicast. Generate an SDP redirector if
 +                 * multicast */
 +                eosf = strrchr(sfilename, '.');
 +                if (!eosf)
 +                    eosf = sfilename + strlen(sfilename);
 +                if (stream->is_multicast)
 +                    strcpy(eosf, ".sdp");
 +                else
 +                    strcpy(eosf, ".rtsp");
 +            }
 +        }
 +
 +        avio_printf(pb, "<tr><td><a href=\"/%s\">%s</a> ",
 +                    sfilename, stream->filename);
 +        avio_printf(pb, "<td align=right> %d <td align=right> ",
 +                    stream->conns_served);
 +        fmt_bytecount(pb, stream->bytes_served);
 +
 +        switch(stream->stream_type) {
 +        case STREAM_TYPE_LIVE: {
 +            int audio_bit_rate = 0;
 +            int video_bit_rate = 0;
 +            const char *audio_codec_name = "";
 +            const char *video_codec_name = "";
 +            const char *audio_codec_name_extra = "";
 +            const char *video_codec_name_extra = "";
 +
 +            for(i=0;i<stream->nb_streams;i++) {
 +                AVStream *st = stream->streams[i];
 +                AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
 +
 +                switch(st->codec->codec_type) {
 +                case AVMEDIA_TYPE_AUDIO:
 +                    audio_bit_rate += st->codec->bit_rate;
 +                    if (codec) {
 +                        if (*audio_codec_name)
 +                            audio_codec_name_extra = "...";
 +                        audio_codec_name = codec->name;
 +                    }
 +                    break;
 +                case AVMEDIA_TYPE_VIDEO:
 +                    video_bit_rate += st->codec->bit_rate;
 +                    if (codec) {
 +                        if (*video_codec_name)
 +                            video_codec_name_extra = "...";
 +                        video_codec_name = codec->name;
 +                    }
 +                    break;
 +                case AVMEDIA_TYPE_DATA:
 +                    video_bit_rate += st->codec->bit_rate;
 +                    break;
 +                default:
 +                    abort();
 +                }
 +            }
 +
 +            avio_printf(pb, "<td align=center> %s <td align=right> %d "
 +                            "<td align=right> %d <td> %s %s <td align=right> "
 +                            "%d <td> %s %s",
 +                        stream->fmt->name, stream->bandwidth,
 +                        video_bit_rate / 1000, video_codec_name,
 +                        video_codec_name_extra, audio_bit_rate / 1000,
 +                        audio_codec_name, audio_codec_name_extra);
 +
 +            if (stream->feed)
 +                avio_printf(pb, "<td>%s", stream->feed->filename);
 +            else
 +                avio_printf(pb, "<td>%s", stream->feed_filename);
 +            avio_printf(pb, "\n");
 +        }
 +            break;
 +        default:
 +            avio_printf(pb, "<td align=center> - <td align=right> - "
 +                            "<td align=right> - <td><td align=right> - <td>\n");
 +            break;
 +        }
 +        stream = stream->next;
 +    }
 +    avio_printf(pb, "</table>\n");
 +
 +    stream = config.first_stream;
 +    while (stream) {
 +
 +        if (stream->feed != stream) {
 +            stream = stream->next;
 +            continue;
 +        }
 +
 +        avio_printf(pb, "<h2>Feed %s</h2>", stream->filename);
 +        if (stream->pid) {
 +            avio_printf(pb, "Running as pid %d.\n", stream->pid);
 +
 +#if defined(linux)
 +            {
 +                FILE *pid_stat;
 +                char ps_cmd[64];
 +
 +                /* This is somewhat linux specific I guess */
 +                snprintf(ps_cmd, sizeof(ps_cmd),
 +                         "ps -o \"%%cpu,cputime\" --no-headers %d",
 +                         stream->pid);
 +
 +                 pid_stat = popen(ps_cmd, "r");
 +                 if (pid_stat) {
 +                     char cpuperc[10];
 +                     char cpuused[64];
 +
 +                     if (fscanf(pid_stat, "%9s %63s", cpuperc, cpuused) == 2) {
 +                         avio_printf(pb, "Currently using %s%% of the cpu. "
 +                                         "Total time used %s.\n",
 +                                     cpuperc, cpuused);
 +                     }
 +                     fclose(pid_stat);
 +                 }
 +            }
 +#endif
 +
 +            avio_printf(pb, "<p>");
 +        }
 +
 +        print_stream_params(pb, stream);
 +        stream = stream->next;
 +    }
 +
 +    /* connection status */
 +    avio_printf(pb, "<h2>Connection Status</h2>\n");
 +
 +    avio_printf(pb, "Number of connections: %d / %d<br>\n",
 +                nb_connections, config.nb_max_connections);
 +
 +    avio_printf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n",
 +                current_bandwidth, config.max_bandwidth);
 +
 +    avio_printf(pb, "<table>\n");
 +    avio_printf(pb, "<tr><th>#<th>File<th>IP<th>Proto<th>State<th>Target "
 +                    "bits/sec<th>Actual bits/sec<th>Bytes transferred\n");
 +    c1 = first_http_ctx;
 +    i = 0;
 +    while (c1) {
 +        int bitrate;
 +        int j;
 +
 +        bitrate = 0;
 +        if (c1->stream) {
 +            for (j = 0; j < c1->stream->nb_streams; j++) {
 +                if (!c1->stream->feed)
 +                    bitrate += c1->stream->streams[j]->codec->bit_rate;
 +                else if (c1->feed_streams[j] >= 0)
 +                    bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate;
 +            }
 +        }
 +
 +        i++;
 +        p = inet_ntoa(c1->from_addr.sin_addr);
 +        avio_printf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s"
 +                        "<td align=right>",
 +                    i, c1->stream ? c1->stream->filename : "",
 +                    c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "", p,
 +                    c1->protocol, http_state[c1->state]);
 +        fmt_bytecount(pb, bitrate);
 +        avio_printf(pb, "<td align=right>");
 +        fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8);
 +        avio_printf(pb, "<td align=right>");
 +        fmt_bytecount(pb, c1->data_count);
 +        avio_printf(pb, "\n");
 +        c1 = c1->next;
 +    }
 +    avio_printf(pb, "</table>\n");
 +
 +    /* date */
 +    ti = time(NULL);
 +    p = ctime(&ti);
 +    avio_printf(pb, "<hr size=1 noshade>Generated at %s", p);
 +    avio_printf(pb, "</body>\n</html>\n");
 +
 +    len = avio_close_dyn_buf(pb, &c->pb_buffer);
 +    c->buffer_ptr = c->pb_buffer;
 +    c->buffer_end = c->pb_buffer + len;
 +}
 +
 +static int open_input_stream(HTTPContext *c, const char *info)
 +{
 +    char buf[128];
 +    char input_filename[1024];
 +    AVFormatContext *s = NULL;
 +    int buf_size, i, ret;
 +    int64_t stream_pos;
 +
 +    /* find file name */
 +    if (c->stream->feed) {
 +        strcpy(input_filename, c->stream->feed->feed_filename);
 +        buf_size = FFM_PACKET_SIZE;
 +        /* compute position (absolute time) */
 +        if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
 +            if ((ret = av_parse_time(&stream_pos, buf, 0)) < 0) {
 +                http_log("Invalid date specification '%s' for stream\n", buf);
 +                return ret;
 +            }
 +        } else if (av_find_info_tag(buf, sizeof(buf), "buffer", info)) {
 +            int prebuffer = strtol(buf, 0, 10);
 +            stream_pos = av_gettime() - prebuffer * (int64_t)1000000;
 +        } else
 +            stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000;
 +    } else {
 +        strcpy(input_filename, c->stream->feed_filename);
 +        buf_size = 0;
 +        /* compute position (relative time) */
 +        if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
 +            if ((ret = av_parse_time(&stream_pos, buf, 1)) < 0) {
 +                http_log("Invalid date specification '%s' for stream\n", buf);
 +                return ret;
 +            }
 +        } else
 +            stream_pos = 0;
 +    }
 +    if (!input_filename[0]) {
 +        http_log("No filename was specified for stream\n");
 +        return AVERROR(EINVAL);
 +    }
 +
 +    /* open stream */
 +    ret = avformat_open_input(&s, input_filename, c->stream->ifmt,
 +                              &c->stream->in_opts);
 +    if (ret < 0) {
 +        http_log("Could not open input '%s': %s\n",
 +                 input_filename, av_err2str(ret));
 +        return ret;
 +    }
 +
 +    /* set buffer size */
 +    if (buf_size > 0) {
 +        ret = ffio_set_buf_size(s->pb, buf_size);
 +        if (ret < 0) {
 +            http_log("Failed to set buffer size\n");
 +            return ret;
 +        }
 +    }
 +
 +    s->flags |= AVFMT_FLAG_GENPTS;
 +    c->fmt_in = s;
 +    if (strcmp(s->iformat->name, "ffm") &&
 +        (ret = avformat_find_stream_info(c->fmt_in, NULL)) < 0) {
 +        http_log("Could not find stream info for input '%s'\n", input_filename);
 +        avformat_close_input(&s);
 +        return ret;
 +    }
 +
 +    /* choose stream as clock source (we favor the video stream if
 +     * present) for packet sending */
 +    c->pts_stream_index = 0;
 +    for(i=0;i<c->stream->nb_streams;i++) {
 +        if (c->pts_stream_index == 0 &&
 +            c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 +            c->pts_stream_index = i;
 +        }
 +    }
 +
 +    if (c->fmt_in->iformat->read_seek)
 +        av_seek_frame(c->fmt_in, -1, stream_pos, 0);
 +    /* set the start time (needed for maxtime and RTP packet timing) */
 +    c->start_time = cur_time;
 +    c->first_pts = AV_NOPTS_VALUE;
 +    return 0;
 +}
 +
 +/* return the server clock (in us) */
 +static int64_t get_server_clock(HTTPContext *c)
 +{
 +    /* compute current pts value from system time */
 +    return (cur_time - c->start_time) * 1000;
 +}
 +
 +/* return the estimated time (in us) at which the current packet must be sent */
 +static int64_t get_packet_send_clock(HTTPContext *c)
 +{
 +    int bytes_left, bytes_sent, frame_bytes;
 +
 +    frame_bytes = c->cur_frame_bytes;
 +    if (frame_bytes <= 0)
 +        return c->cur_pts;
 +
 +    bytes_left = c->buffer_end - c->buffer_ptr;
 +    bytes_sent = frame_bytes - bytes_left;
 +    return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes;
 +}
 +
 +
 +static int http_prepare_data(HTTPContext *c)
 +{
 +    int i, len, ret;
 +    AVFormatContext *ctx;
 +
 +    av_freep(&c->pb_buffer);
 +    switch(c->state) {
 +    case HTTPSTATE_SEND_DATA_HEADER:
 +        ctx = avformat_alloc_context();
 +        if (!ctx)
 +            return AVERROR(ENOMEM);
 +        c->fmt_ctx = *ctx;
 +        av_freep(&ctx);
 +        av_dict_copy(&(c->fmt_ctx.metadata), c->stream->metadata, 0);
 +        c->fmt_ctx.streams = av_mallocz_array(c->stream->nb_streams,
 +                                              sizeof(AVStream *));
 +        if (!c->fmt_ctx.streams)
 +            return AVERROR(ENOMEM);
 +
 +        for(i=0;i<c->stream->nb_streams;i++) {
 +            AVStream *src;
 +            c->fmt_ctx.streams[i] = av_mallocz(sizeof(AVStream));
 +
 +            /* if file or feed, then just take streams from FFServerStream
 +             * struct */
 +            if (!c->stream->feed ||
 +                c->stream->feed == c->stream)
 +                src = c->stream->streams[i];
 +            else
 +                src = c->stream->feed->streams[c->stream->feed_streams[i]];
 +
 +            *(c->fmt_ctx.streams[i]) = *src;
 +            c->fmt_ctx.streams[i]->priv_data = 0;
 +            /* XXX: should be done in AVStream, not in codec */
 +            c->fmt_ctx.streams[i]->codec->frame_number = 0;
 +        }
 +        /* set output format parameters */
 +        c->fmt_ctx.oformat = c->stream->fmt;
 +        c->fmt_ctx.nb_streams = c->stream->nb_streams;
 +
 +        c->got_key_frame = 0;
 +
 +        /* prepare header and save header data in a stream */
 +        if (avio_open_dyn_buf(&c->fmt_ctx.pb) < 0) {
 +            /* XXX: potential leak */
 +            return -1;
 +        }
 +        c->fmt_ctx.pb->seekable = 0;
 +
 +        /*
 + &