Merge commit 'db0a943266be29ff0596872ebb418dfed75d00de'
authorMichael Niedermayer <michaelni@gmx.at>
Sun, 10 Feb 2013 11:47:02 +0000 (12:47 +0100)
committerMichael Niedermayer <michaelni@gmx.at>
Sun, 10 Feb 2013 11:47:37 +0000 (12:47 +0100)
* commit 'db0a943266be29ff0596872ebb418dfed75d00de':
  avplay: apply the stream sample_aspect_ratio to decoded video frames

Merged-by: Michael Niedermayer <michaelni@gmx.at>
1  2 
ffplay.c

diff --combined ffplay.c
index d8dbe44,0000000..145e045
mode 100644,000000..100644
--- /dev/null
+++ b/ffplay.c
@@@ -1,3414 -1,0 +1,3417 @@@
 +/*
 + * Copyright (c) 2003 Fabrice Bellard
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +/**
 + * @file
 + * simple media player based on the FFmpeg libraries
 + */
 +
 +#include "config.h"
 +#include <inttypes.h>
 +#include <math.h>
 +#include <limits.h>
 +#include <signal.h>
 +#include "libavutil/avstring.h"
 +#include "libavutil/colorspace.h"
 +#include "libavutil/mathematics.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/imgutils.h"
 +#include "libavutil/dict.h"
 +#include "libavutil/parseutils.h"
 +#include "libavutil/samplefmt.h"
 +#include "libavutil/avassert.h"
 +#include "libavutil/time.h"
 +#include "libavformat/avformat.h"
 +#include "libavdevice/avdevice.h"
 +#include "libswscale/swscale.h"
 +#include "libavutil/opt.h"
 +#include "libavcodec/avfft.h"
 +#include "libswresample/swresample.h"
 +
 +#if CONFIG_AVFILTER
 +# include "libavfilter/avcodec.h"
 +# include "libavfilter/avfilter.h"
 +# include "libavfilter/avfiltergraph.h"
 +# include "libavfilter/buffersink.h"
 +# include "libavfilter/buffersrc.h"
 +#endif
 +
 +#include <SDL.h>
 +#include <SDL_thread.h>
 +
 +#include "cmdutils.h"
 +
 +#include <assert.h>
 +
 +const char program_name[] = "ffplay";
 +const int program_birth_year = 2003;
 +
 +#define MAX_QUEUE_SIZE (15 * 1024 * 1024)
 +#define MIN_FRAMES 5
 +
 +/* SDL audio buffer size, in samples. Should be small to have precise
 +   A/V sync as SDL does not have hardware buffer fullness info. */
 +#define SDL_AUDIO_BUFFER_SIZE 1024
 +
 +/* no AV sync correction is done if below the AV sync threshold */
 +#define AV_SYNC_THRESHOLD 0.01
 +/* no AV correction is done if too big error */
 +#define AV_NOSYNC_THRESHOLD 10.0
 +
 +/* maximum audio speed change to get correct sync */
 +#define SAMPLE_CORRECTION_PERCENT_MAX 10
 +
 +/* external clock speed adjustment constants for realtime sources based on buffer fullness */
 +#define EXTERNAL_CLOCK_SPEED_MIN  0.900
 +#define EXTERNAL_CLOCK_SPEED_MAX  1.010
 +#define EXTERNAL_CLOCK_SPEED_STEP 0.001
 +
 +/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
 +#define AUDIO_DIFF_AVG_NB   20
 +
 +/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
 +/* TODO: We assume that a decoded and resampled frame fits into this buffer */
 +#define SAMPLE_ARRAY_SIZE (8 * 65536)
 +
 +#define CURSOR_HIDE_DELAY 1000000
 +
 +static int64_t sws_flags = SWS_BICUBIC;
 +
 +typedef struct MyAVPacketList {
 +    AVPacket pkt;
 +    struct MyAVPacketList *next;
 +    int serial;
 +} MyAVPacketList;
 +
 +typedef struct PacketQueue {
 +    MyAVPacketList *first_pkt, *last_pkt;
 +    int nb_packets;
 +    int size;
 +    int abort_request;
 +    int serial;
 +    SDL_mutex *mutex;
 +    SDL_cond *cond;
 +} PacketQueue;
 +
 +#define VIDEO_PICTURE_QUEUE_SIZE 4
 +#define SUBPICTURE_QUEUE_SIZE 4
 +
 +typedef struct VideoPicture {
 +    double pts;             // presentation timestamp for this picture
 +    int64_t pos;            // byte position in file
 +    SDL_Overlay *bmp;
 +    int width, height; /* source height & width */
 +    AVRational sample_aspect_ratio;
 +    int allocated;
 +    int reallocate;
 +    int serial;
 +
 +#if CONFIG_AVFILTER
 +    AVFilterBufferRef *picref;
 +#endif
 +} VideoPicture;
 +
 +typedef struct SubPicture {
 +    double pts; /* presentation time stamp for this picture */
 +    AVSubtitle sub;
 +} SubPicture;
 +
 +typedef struct AudioParams {
 +    int freq;
 +    int channels;
 +    int channel_layout;
 +    enum AVSampleFormat fmt;
 +} AudioParams;
 +
 +enum {
 +    AV_SYNC_AUDIO_MASTER, /* default choice */
 +    AV_SYNC_VIDEO_MASTER,
 +    AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
 +};
 +
 +typedef struct VideoState {
 +    SDL_Thread *read_tid;
 +    SDL_Thread *video_tid;
 +    SDL_Thread *refresh_tid;
 +    AVInputFormat *iformat;
 +    int no_background;
 +    int abort_request;
 +    int force_refresh;
 +    int paused;
 +    int last_paused;
 +    int queue_attachments_req;
 +    int seek_req;
 +    int seek_flags;
 +    int64_t seek_pos;
 +    int64_t seek_rel;
 +    int read_pause_return;
 +    AVFormatContext *ic;
 +    int realtime;
 +
 +    int audio_stream;
 +
 +    int av_sync_type;
 +    double external_clock;                   ///< external clock base
 +    double external_clock_drift;             ///< external clock base - time (av_gettime) at which we updated external_clock
 +    int64_t external_clock_time;             ///< last reference time
 +    double external_clock_speed;             ///< speed of the external clock
 +
 +    double audio_clock;
 +    double audio_diff_cum; /* used for AV difference average computation */
 +    double audio_diff_avg_coef;
 +    double audio_diff_threshold;
 +    int audio_diff_avg_count;
 +    AVStream *audio_st;
 +    PacketQueue audioq;
 +    int audio_hw_buf_size;
 +    uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
 +    uint8_t *audio_buf;
 +    uint8_t *audio_buf1;
 +    unsigned int audio_buf_size; /* in bytes */
 +    unsigned int audio_buf1_size;
 +    int audio_buf_index; /* in bytes */
 +    int audio_write_buf_size;
 +    AVPacket audio_pkt_temp;
 +    AVPacket audio_pkt;
 +    int audio_pkt_temp_serial;
 +    struct AudioParams audio_src;
 +    struct AudioParams audio_tgt;
 +    struct SwrContext *swr_ctx;
 +    double audio_current_pts;
 +    double audio_current_pts_drift;
 +    int frame_drops_early;
 +    int frame_drops_late;
 +    AVFrame *frame;
 +
 +    enum ShowMode {
 +        SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
 +    } show_mode;
 +    int16_t sample_array[SAMPLE_ARRAY_SIZE];
 +    int sample_array_index;
 +    int last_i_start;
 +    RDFTContext *rdft;
 +    int rdft_bits;
 +    FFTSample *rdft_data;
 +    int xpos;
 +
 +    SDL_Thread *subtitle_tid;
 +    int subtitle_stream;
 +    int subtitle_stream_changed;
 +    AVStream *subtitle_st;
 +    PacketQueue subtitleq;
 +    SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
 +    int subpq_size, subpq_rindex, subpq_windex;
 +    SDL_mutex *subpq_mutex;
 +    SDL_cond *subpq_cond;
 +
 +    double frame_timer;
 +    double frame_last_pts;
 +    double frame_last_duration;
 +    double frame_last_dropped_pts;
 +    double frame_last_returned_time;
 +    double frame_last_filter_delay;
 +    int64_t frame_last_dropped_pos;
 +    double video_clock;             // pts of last decoded frame / predicted pts of next decoded frame
 +    int video_stream;
 +    AVStream *video_st;
 +    PacketQueue videoq;
 +    double video_current_pts;       // current displayed pts (different from video_clock if frame fifos are used)
 +    double video_current_pts_drift; // video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
 +    int64_t video_current_pos;      // current displayed file pos
 +    double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
 +    VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
 +    int pictq_size, pictq_rindex, pictq_windex;
 +    SDL_mutex *pictq_mutex;
 +    SDL_cond *pictq_cond;
 +#if !CONFIG_AVFILTER
 +    struct SwsContext *img_convert_ctx;
 +#endif
 +    SDL_Rect last_display_rect;
 +
 +    char filename[1024];
 +    int width, height, xleft, ytop;
 +    int step;
 +
 +#if CONFIG_AVFILTER
 +    AVFilterContext *in_video_filter;   // the first filter in the video chain
 +    AVFilterContext *out_video_filter;  // the last filter in the video chain
 +    int use_dr1;
 +    FrameBuffer *buffer_pool;
 +#endif
 +
 +    int refresh;
 +    int last_video_stream, last_audio_stream, last_subtitle_stream;
 +
 +    SDL_cond *continue_read_thread;
 +} VideoState;
 +
 +/* options specified by the user */
 +static AVInputFormat *file_iformat;
 +static const char *input_filename;
 +static const char *window_title;
 +static int fs_screen_width;
 +static int fs_screen_height;
 +static int default_width  = 640;
 +static int default_height = 480;
 +static int screen_width  = 0;
 +static int screen_height = 0;
 +static int audio_disable;
 +static int video_disable;
 +static int wanted_stream[AVMEDIA_TYPE_NB] = {
 +    [AVMEDIA_TYPE_AUDIO]    = -1,
 +    [AVMEDIA_TYPE_VIDEO]    = -1,
 +    [AVMEDIA_TYPE_SUBTITLE] = -1,
 +};
 +static int seek_by_bytes = -1;
 +static int display_disable;
 +static int show_status = 1;
 +static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 +static int64_t start_time = AV_NOPTS_VALUE;
 +static int64_t duration = AV_NOPTS_VALUE;
 +static int workaround_bugs = 1;
 +static int fast = 0;
 +static int genpts = 0;
 +static int lowres = 0;
 +static int idct = FF_IDCT_AUTO;
 +static enum AVDiscard skip_frame       = AVDISCARD_DEFAULT;
 +static enum AVDiscard skip_idct        = AVDISCARD_DEFAULT;
 +static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
 +static int error_concealment = 3;
 +static int decoder_reorder_pts = -1;
 +static int autoexit;
 +static int exit_on_keydown;
 +static int exit_on_mousedown;
 +static int loop = 1;
 +static int framedrop = -1;
 +static int infinite_buffer = -1;
 +static enum ShowMode show_mode = SHOW_MODE_NONE;
 +static const char *audio_codec_name;
 +static const char *subtitle_codec_name;
 +static const char *video_codec_name;
 +static int rdftspeed = 20;
 +static int64_t cursor_last_shown;
 +static int cursor_hidden = 0;
 +#if CONFIG_AVFILTER
 +static char *vfilters = NULL;
 +#endif
 +
 +/* current context */
 +static int is_full_screen;
 +static int64_t audio_callback_time;
 +
 +static AVPacket flush_pkt;
 +
 +#define FF_ALLOC_EVENT   (SDL_USEREVENT)
 +#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
 +#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 +
 +static SDL_Surface *screen;
 +
 +static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
 +
 +static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
 +{
 +    MyAVPacketList *pkt1;
 +
 +    if (q->abort_request)
 +       return -1;
 +
 +    pkt1 = av_malloc(sizeof(MyAVPacketList));
 +    if (!pkt1)
 +        return -1;
 +    pkt1->pkt = *pkt;
 +    pkt1->next = NULL;
 +    if (pkt == &flush_pkt)
 +        q->serial++;
 +    pkt1->serial = q->serial;
 +
 +    if (!q->last_pkt)
 +        q->first_pkt = pkt1;
 +    else
 +        q->last_pkt->next = pkt1;
 +    q->last_pkt = pkt1;
 +    q->nb_packets++;
 +    q->size += pkt1->pkt.size + sizeof(*pkt1);
 +    /* XXX: should duplicate packet data in DV case */
 +    SDL_CondSignal(q->cond);
 +    return 0;
 +}
 +
 +static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 +{
 +    int ret;
 +
 +    /* duplicate the packet */
 +    if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
 +        return -1;
 +
 +    SDL_LockMutex(q->mutex);
 +    ret = packet_queue_put_private(q, pkt);
 +    SDL_UnlockMutex(q->mutex);
 +
 +    if (pkt != &flush_pkt && ret < 0)
 +        av_free_packet(pkt);
 +
 +    return ret;
 +}
 +
 +/* packet queue handling */
 +static void packet_queue_init(PacketQueue *q)
 +{
 +    memset(q, 0, sizeof(PacketQueue));
 +    q->mutex = SDL_CreateMutex();
 +    q->cond = SDL_CreateCond();
 +    q->abort_request = 1;
 +}
 +
 +static void packet_queue_flush(PacketQueue *q)
 +{
 +    MyAVPacketList *pkt, *pkt1;
 +
 +    SDL_LockMutex(q->mutex);
 +    for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
 +        pkt1 = pkt->next;
 +        av_free_packet(&pkt->pkt);
 +        av_freep(&pkt);
 +    }
 +    q->last_pkt = NULL;
 +    q->first_pkt = NULL;
 +    q->nb_packets = 0;
 +    q->size = 0;
 +    SDL_UnlockMutex(q->mutex);
 +}
 +
 +static void packet_queue_destroy(PacketQueue *q)
 +{
 +    packet_queue_flush(q);
 +    SDL_DestroyMutex(q->mutex);
 +    SDL_DestroyCond(q->cond);
 +}
 +
 +static void packet_queue_abort(PacketQueue *q)
 +{
 +    SDL_LockMutex(q->mutex);
 +
 +    q->abort_request = 1;
 +
 +    SDL_CondSignal(q->cond);
 +
 +    SDL_UnlockMutex(q->mutex);
 +}
 +
 +static void packet_queue_start(PacketQueue *q)
 +{
 +    SDL_LockMutex(q->mutex);
 +    q->abort_request = 0;
 +    packet_queue_put_private(q, &flush_pkt);
 +    SDL_UnlockMutex(q->mutex);
 +}
 +
 +/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 +static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
 +{
 +    MyAVPacketList *pkt1;
 +    int ret;
 +
 +    SDL_LockMutex(q->mutex);
 +
 +    for (;;) {
 +        if (q->abort_request) {
 +            ret = -1;
 +            break;
 +        }
 +
 +        pkt1 = q->first_pkt;
 +        if (pkt1) {
 +            q->first_pkt = pkt1->next;
 +            if (!q->first_pkt)
 +                q->last_pkt = NULL;
 +            q->nb_packets--;
 +            q->size -= pkt1->pkt.size + sizeof(*pkt1);
 +            *pkt = pkt1->pkt;
 +            if (serial)
 +                *serial = pkt1->serial;
 +            av_free(pkt1);
 +            ret = 1;
 +            break;
 +        } else if (!block) {
 +            ret = 0;
 +            break;
 +        } else {
 +            SDL_CondWait(q->cond, q->mutex);
 +        }
 +    }
 +    SDL_UnlockMutex(q->mutex);
 +    return ret;
 +}
 +
 +static inline void fill_rectangle(SDL_Surface *screen,
 +                                  int x, int y, int w, int h, int color, int update)
 +{
 +    SDL_Rect rect;
 +    rect.x = x;
 +    rect.y = y;
 +    rect.w = w;
 +    rect.h = h;
 +    SDL_FillRect(screen, &rect, color);
 +    if (update && w > 0 && h > 0)
 +        SDL_UpdateRect(screen, x, y, w, h);
 +}
 +
 +/* draw only the border of a rectangle */
 +static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
 +{
 +    int w1, w2, h1, h2;
 +
 +    /* fill the background */
 +    w1 = x;
 +    if (w1 < 0)
 +        w1 = 0;
 +    w2 = width - (x + w);
 +    if (w2 < 0)
 +        w2 = 0;
 +    h1 = y;
 +    if (h1 < 0)
 +        h1 = 0;
 +    h2 = height - (y + h);
 +    if (h2 < 0)
 +        h2 = 0;
 +    fill_rectangle(screen,
 +                   xleft, ytop,
 +                   w1, height,
 +                   color, update);
 +    fill_rectangle(screen,
 +                   xleft + width - w2, ytop,
 +                   w2, height,
 +                   color, update);
 +    fill_rectangle(screen,
 +                   xleft + w1, ytop,
 +                   width - w1 - w2, h1,
 +                   color, update);
 +    fill_rectangle(screen,
 +                   xleft + w1, ytop + height - h2,
 +                   width - w1 - w2, h2,
 +                   color, update);
 +}
 +
 +#define ALPHA_BLEND(a, oldp, newp, s)\
 +((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
 +
 +#define RGBA_IN(r, g, b, a, s)\
 +{\
 +    unsigned int v = ((const uint32_t *)(s))[0];\
 +    a = (v >> 24) & 0xff;\
 +    r = (v >> 16) & 0xff;\
 +    g = (v >> 8) & 0xff;\
 +    b = v & 0xff;\
 +}
 +
 +#define YUVA_IN(y, u, v, a, s, pal)\
 +{\
 +    unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
 +    a = (val >> 24) & 0xff;\
 +    y = (val >> 16) & 0xff;\
 +    u = (val >> 8) & 0xff;\
 +    v = val & 0xff;\
 +}
 +
 +#define YUVA_OUT(d, y, u, v, a)\
 +{\
 +    ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
 +}
 +
 +
 +#define BPP 1
 +
 +static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
 +{
 +    int wrap, wrap3, width2, skip2;
 +    int y, u, v, a, u1, v1, a1, w, h;
 +    uint8_t *lum, *cb, *cr;
 +    const uint8_t *p;
 +    const uint32_t *pal;
 +    int dstx, dsty, dstw, dsth;
 +
 +    dstw = av_clip(rect->w, 0, imgw);
 +    dsth = av_clip(rect->h, 0, imgh);
 +    dstx = av_clip(rect->x, 0, imgw - dstw);
 +    dsty = av_clip(rect->y, 0, imgh - dsth);
 +    lum = dst->data[0] + dsty * dst->linesize[0];
 +    cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
 +    cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
 +
 +    width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
 +    skip2 = dstx >> 1;
 +    wrap = dst->linesize[0];
 +    wrap3 = rect->pict.linesize[0];
 +    p = rect->pict.data[0];
 +    pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
 +
 +    if (dsty & 1) {
 +        lum += dstx;
 +        cb += skip2;
 +        cr += skip2;
 +
 +        if (dstx & 1) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +            cb++;
 +            cr++;
 +            lum++;
 +            p += BPP;
 +        }
 +        for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 +            cb++;
 +            cr++;
 +            p += 2 * BPP;
 +            lum += 2;
 +        }
 +        if (w) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +            p++;
 +            lum++;
 +        }
 +        p += wrap3 - dstw * BPP;
 +        lum += wrap - dstw - dstx;
 +        cb += dst->linesize[1] - width2 - skip2;
 +        cr += dst->linesize[2] - width2 - skip2;
 +    }
 +    for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
 +        lum += dstx;
 +        cb += skip2;
 +        cr += skip2;
 +
 +        if (dstx & 1) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            p += wrap3;
 +            lum += wrap;
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 +            cb++;
 +            cr++;
 +            p += -wrap3 + BPP;
 +            lum += -wrap + 1;
 +        }
 +        for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +            p += wrap3;
 +            lum += wrap;
 +
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
 +
 +            cb++;
 +            cr++;
 +            p += -wrap3 + 2 * BPP;
 +            lum += -wrap + 2;
 +        }
 +        if (w) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            p += wrap3;
 +            lum += wrap;
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 +            cb++;
 +            cr++;
 +            p += -wrap3 + BPP;
 +            lum += -wrap + 1;
 +        }
 +        p += wrap3 + (wrap3 - dstw * BPP);
 +        lum += wrap + (wrap - dstw - dstx);
 +        cb += dst->linesize[1] - width2 - skip2;
 +        cr += dst->linesize[2] - width2 - skip2;
 +    }
 +    /* handle odd height */
 +    if (h) {
 +        lum += dstx;
 +        cb += skip2;
 +        cr += skip2;
 +
 +        if (dstx & 1) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +            cb++;
 +            cr++;
 +            lum++;
 +            p += BPP;
 +        }
 +        for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            u1 = u;
 +            v1 = v;
 +            a1 = a;
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +
 +            YUVA_IN(y, u, v, a, p + BPP, pal);
 +            u1 += u;
 +            v1 += v;
 +            a1 += a;
 +            lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 +            cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
 +            cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
 +            cb++;
 +            cr++;
 +            p += 2 * BPP;
 +            lum += 2;
 +        }
 +        if (w) {
 +            YUVA_IN(y, u, v, a, p, pal);
 +            lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 +            cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 +            cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 +        }
 +    }
 +}
 +
 +static void free_subpicture(SubPicture *sp)
 +{
 +    avsubtitle_free(&sp->sub);
 +}
 +
 +static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
 +{
 +    float aspect_ratio;
 +    int width, height, x, y;
 +
 +    if (vp->sample_aspect_ratio.num == 0)
 +        aspect_ratio = 0;
 +    else
 +        aspect_ratio = av_q2d(vp->sample_aspect_ratio);
 +
 +    if (aspect_ratio <= 0.0)
 +        aspect_ratio = 1.0;
 +    aspect_ratio *= (float)vp->width / (float)vp->height;
 +
 +    /* XXX: we suppose the screen has a 1.0 pixel ratio */
 +    height = scr_height;
 +    width = ((int)rint(height * aspect_ratio)) & ~1;
 +    if (width > scr_width) {
 +        width = scr_width;
 +        height = ((int)rint(width / aspect_ratio)) & ~1;
 +    }
 +    x = (scr_width - width) / 2;
 +    y = (scr_height - height) / 2;
 +    rect->x = scr_xleft + x;
 +    rect->y = scr_ytop  + y;
 +    rect->w = FFMAX(width,  1);
 +    rect->h = FFMAX(height, 1);
 +}
 +
 +static void video_image_display(VideoState *is)
 +{
 +    VideoPicture *vp;
 +    SubPicture *sp;
 +    AVPicture pict;
 +    SDL_Rect rect;
 +    int i;
 +
 +    vp = &is->pictq[is->pictq_rindex];
 +    if (vp->bmp) {
 +        if (is->subtitle_st) {
 +            if (is->subpq_size > 0) {
 +                sp = &is->subpq[is->subpq_rindex];
 +
 +                if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
 +                    SDL_LockYUVOverlay (vp->bmp);
 +
 +                    pict.data[0] = vp->bmp->pixels[0];
 +                    pict.data[1] = vp->bmp->pixels[2];
 +                    pict.data[2] = vp->bmp->pixels[1];
 +
 +                    pict.linesize[0] = vp->bmp->pitches[0];
 +                    pict.linesize[1] = vp->bmp->pitches[2];
 +                    pict.linesize[2] = vp->bmp->pitches[1];
 +
 +                    for (i = 0; i < sp->sub.num_rects; i++)
 +                        blend_subrect(&pict, sp->sub.rects[i],
 +                                      vp->bmp->w, vp->bmp->h);
 +
 +                    SDL_UnlockYUVOverlay (vp->bmp);
 +                }
 +            }
 +        }
 +
 +        calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
 +
 +        SDL_DisplayYUVOverlay(vp->bmp, &rect);
 +
 +        if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
 +            int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 +            fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
 +            is->last_display_rect = rect;
 +        }
 +    }
 +}
 +
 +static inline int compute_mod(int a, int b)
 +{
 +    return a < 0 ? a%b + b : a%b;
 +}
 +
 +static void video_audio_display(VideoState *s)
 +{
 +    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
 +    int ch, channels, h, h2, bgcolor, fgcolor;
 +    int64_t time_diff;
 +    int rdft_bits, nb_freq;
 +
 +    for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
 +        ;
 +    nb_freq = 1 << (rdft_bits - 1);
 +
 +    /* compute display index : center on currently output samples */
 +    channels = s->audio_tgt.channels;
 +    nb_display_channels = channels;
 +    if (!s->paused) {
 +        int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
 +        n = 2 * channels;
 +        delay = s->audio_write_buf_size;
 +        delay /= n;
 +
 +        /* to be more precise, we take into account the time spent since
 +           the last buffer computation */
 +        if (audio_callback_time) {
 +            time_diff = av_gettime() - audio_callback_time;
 +            delay -= (time_diff * s->audio_tgt.freq) / 1000000;
 +        }
 +
 +        delay += 2 * data_used;
 +        if (delay < data_used)
 +            delay = data_used;
 +
 +        i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
 +        if (s->show_mode == SHOW_MODE_WAVES) {
 +            h = INT_MIN;
 +            for (i = 0; i < 1000; i += channels) {
 +                int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
 +                int a = s->sample_array[idx];
 +                int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
 +                int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
 +                int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
 +                int score = a - d;
 +                if (h < score && (b ^ c) < 0) {
 +                    h = score;
 +                    i_start = idx;
 +                }
 +            }
 +        }
 +
 +        s->last_i_start = i_start;
 +    } else {
 +        i_start = s->last_i_start;
 +    }
 +
 +    bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 +    if (s->show_mode == SHOW_MODE_WAVES) {
 +        fill_rectangle(screen,
 +                       s->xleft, s->ytop, s->width, s->height,
 +                       bgcolor, 0);
 +
 +        fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 +
 +        /* total height for one channel */
 +        h = s->height / nb_display_channels;
 +        /* graph height / 2 */
 +        h2 = (h * 9) / 20;
 +        for (ch = 0; ch < nb_display_channels; ch++) {
 +            i = i_start + ch;
 +            y1 = s->ytop + ch * h + (h / 2); /* position of center line */
 +            for (x = 0; x < s->width; x++) {
 +                y = (s->sample_array[i] * h2) >> 15;
 +                if (y < 0) {
 +                    y = -y;
 +                    ys = y1 - y;
 +                } else {
 +                    ys = y1;
 +                }
 +                fill_rectangle(screen,
 +                               s->xleft + x, ys, 1, y,
 +                               fgcolor, 0);
 +                i += channels;
 +                if (i >= SAMPLE_ARRAY_SIZE)
 +                    i -= SAMPLE_ARRAY_SIZE;
 +            }
 +        }
 +
 +        fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 +
 +        for (ch = 1; ch < nb_display_channels; ch++) {
 +            y = s->ytop + ch * h;
 +            fill_rectangle(screen,
 +                           s->xleft, y, s->width, 1,
 +                           fgcolor, 0);
 +        }
 +        SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
 +    } else {
 +        nb_display_channels= FFMIN(nb_display_channels, 2);
 +        if (rdft_bits != s->rdft_bits) {
 +            av_rdft_end(s->rdft);
 +            av_free(s->rdft_data);
 +            s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
 +            s->rdft_bits = rdft_bits;
 +            s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
 +        }
 +        {
 +            FFTSample *data[2];
 +            for (ch = 0; ch < nb_display_channels; ch++) {
 +                data[ch] = s->rdft_data + 2 * nb_freq * ch;
 +                i = i_start + ch;
 +                for (x = 0; x < 2 * nb_freq; x++) {
 +                    double w = (x-nb_freq) * (1.0 / nb_freq);
 +                    data[ch][x] = s->sample_array[i] * (1.0 - w * w);
 +                    i += channels;
 +                    if (i >= SAMPLE_ARRAY_SIZE)
 +                        i -= SAMPLE_ARRAY_SIZE;
 +                }
 +                av_rdft_calc(s->rdft, data[ch]);
 +            }
 +            // least efficient way to do this, we should of course directly access it but its more than fast enough
 +            for (y = 0; y < s->height; y++) {
 +                double w = 1 / sqrt(nb_freq);
 +                int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
 +                int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
 +                       + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
 +                a = FFMIN(a, 255);
 +                b = FFMIN(b, 255);
 +                fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
 +
 +                fill_rectangle(screen,
 +                            s->xpos, s->height-y, 1, 1,
 +                            fgcolor, 0);
 +            }
 +        }
 +        SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
 +        if (!s->paused)
 +            s->xpos++;
 +        if (s->xpos >= s->width)
 +            s->xpos= s->xleft;
 +    }
 +}
 +
 +static void stream_close(VideoState *is)
 +{
 +    VideoPicture *vp;
 +    int i;
 +    /* XXX: use a special url_shutdown call to abort parse cleanly */
 +    is->abort_request = 1;
 +    SDL_WaitThread(is->read_tid, NULL);
 +    SDL_WaitThread(is->refresh_tid, NULL);
 +    packet_queue_destroy(&is->videoq);
 +    packet_queue_destroy(&is->audioq);
 +    packet_queue_destroy(&is->subtitleq);
 +
 +    /* free all pictures */
 +    for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
 +        vp = &is->pictq[i];
 +#if CONFIG_AVFILTER
 +        avfilter_unref_bufferp(&vp->picref);
 +#endif
 +        if (vp->bmp) {
 +            SDL_FreeYUVOverlay(vp->bmp);
 +            vp->bmp = NULL;
 +        }
 +    }
 +    SDL_DestroyMutex(is->pictq_mutex);
 +    SDL_DestroyCond(is->pictq_cond);
 +    SDL_DestroyMutex(is->subpq_mutex);
 +    SDL_DestroyCond(is->subpq_cond);
 +    SDL_DestroyCond(is->continue_read_thread);
 +#if !CONFIG_AVFILTER
 +    sws_freeContext(is->img_convert_ctx);
 +#endif
 +    av_free(is);
 +}
 +
 +static void do_exit(VideoState *is)
 +{
 +    if (is) {
 +        stream_close(is);
 +    }
 +    av_lockmgr_register(NULL);
 +    uninit_opts();
 +#if CONFIG_AVFILTER
 +    avfilter_uninit();
 +    av_freep(&vfilters);
 +#endif
 +    avformat_network_deinit();
 +    if (show_status)
 +        printf("\n");
 +    SDL_Quit();
 +    av_log(NULL, AV_LOG_QUIET, "%s", "");
 +    exit(0);
 +}
 +
 +static void sigterm_handler(int sig)
 +{
 +    exit(123);
 +}
 +
 +static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
 +{
 +    int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 +    int w,h;
 +    SDL_Rect rect;
 +
 +    if (is_full_screen) flags |= SDL_FULLSCREEN;
 +    else                flags |= SDL_RESIZABLE;
 +
 +    if (vp && vp->width) {
 +        calculate_display_rect(&rect, 0, 0, INT_MAX, vp->height, vp);
 +        default_width  = rect.w;
 +        default_height = rect.h;
 +    }
 +
 +    if (is_full_screen && fs_screen_width) {
 +        w = fs_screen_width;
 +        h = fs_screen_height;
 +    } else if (!is_full_screen && screen_width) {
 +        w = screen_width;
 +        h = screen_height;
 +    } else {
 +        w = default_width;
 +        h = default_height;
 +    }
 +    if (screen && is->width == screen->w && screen->w == w
 +       && is->height== screen->h && screen->h == h && !force_set_video_mode)
 +        return 0;
 +    screen = SDL_SetVideoMode(w, h, 0, flags);
 +    if (!screen) {
 +        fprintf(stderr, "SDL: could not set video mode - exiting\n");
 +        do_exit(is);
 +    }
 +    if (!window_title)
 +        window_title = input_filename;
 +    SDL_WM_SetCaption(window_title, window_title);
 +
 +    is->width  = screen->w;
 +    is->height = screen->h;
 +
 +    return 0;
 +}
 +
 +/* display the current picture, if any */
 +static void video_display(VideoState *is)
 +{
 +    if (!screen)
 +        video_open(is, 0, NULL);
 +    if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
 +        video_audio_display(is);
 +    else if (is->video_st)
 +        video_image_display(is);
 +}
 +
 +static int refresh_thread(void *opaque)
 +{
 +    VideoState *is= opaque;
 +    while (!is->abort_request) {
 +        SDL_Event event;
 +        event.type = FF_REFRESH_EVENT;
 +        event.user.data1 = opaque;
 +        if (!is->refresh && (!is->paused || is->force_refresh)) {
 +            is->refresh = 1;
 +            SDL_PushEvent(&event);
 +        }
 +        //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
 +        av_usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000);
 +    }
 +    return 0;
 +}
 +
 +/* get the current audio clock value */
 +static double get_audio_clock(VideoState *is)
 +{
 +    if (is->paused) {
 +        return is->audio_current_pts;
 +    } else {
 +        return is->audio_current_pts_drift + av_gettime() / 1000000.0;
 +    }
 +}
 +
 +/* get the current video clock value */
 +static double get_video_clock(VideoState *is)
 +{
 +    if (is->paused) {
 +        return is->video_current_pts;
 +    } else {
 +        return is->video_current_pts_drift + av_gettime() / 1000000.0;
 +    }
 +}
 +
 +/* get the current external clock value */
 +static double get_external_clock(VideoState *is)
 +{
 +    if (is->paused) {
 +        return is->external_clock;
 +    } else {
 +        double time = av_gettime() / 1000000.0;
 +        return is->external_clock_drift + time - (time - is->external_clock_time / 1000000.0) * (1.0 - is->external_clock_speed);
 +    }
 +}
 +
 +static int get_master_sync_type(VideoState *is) {
 +    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
 +        if (is->video_st)
 +            return AV_SYNC_VIDEO_MASTER;
 +        else
 +            return AV_SYNC_AUDIO_MASTER;
 +    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
 +        if (is->audio_st)
 +            return AV_SYNC_AUDIO_MASTER;
 +        else
 +            return AV_SYNC_EXTERNAL_CLOCK;
 +    } else {
 +        return AV_SYNC_EXTERNAL_CLOCK;
 +    }
 +}
 +
 +/* get the current master clock value */
 +static double get_master_clock(VideoState *is)
 +{
 +    double val;
 +
 +    switch (get_master_sync_type(is)) {
 +        case AV_SYNC_VIDEO_MASTER:
 +            val = get_video_clock(is);
 +            break;
 +        case AV_SYNC_AUDIO_MASTER:
 +            val = get_audio_clock(is);
 +            break;
 +        default:
 +            val = get_external_clock(is);
 +            break;
 +    }
 +    return val;
 +}
 +
 +static void update_external_clock_pts(VideoState *is, double pts)
 +{
 +   is->external_clock_time = av_gettime();
 +   is->external_clock = pts;
 +   is->external_clock_drift = pts - is->external_clock_time / 1000000.0;
 +}
 +
 +static void check_external_clock_sync(VideoState *is, double pts) {
 +    if (fabs(get_external_clock(is) - pts) > AV_NOSYNC_THRESHOLD) {
 +        update_external_clock_pts(is, pts);
 +    }
 +}
 +
 +static void update_external_clock_speed(VideoState *is, double speed) {
 +    update_external_clock_pts(is, get_external_clock(is));
 +    is->external_clock_speed = speed;
 +}
 +
 +static void check_external_clock_speed(VideoState *is) {
 +   if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
 +       is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
 +       update_external_clock_speed(is, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->external_clock_speed - EXTERNAL_CLOCK_SPEED_STEP));
 +   } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
 +              (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
 +       update_external_clock_speed(is, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->external_clock_speed + EXTERNAL_CLOCK_SPEED_STEP));
 +   } else {
 +       double speed = is->external_clock_speed;
 +       if (speed != 1.0)
 +           update_external_clock_speed(is, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
 +   }
 +}
 +
 +/* seek in the stream */
 +static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
 +{
 +    if (!is->seek_req) {
 +        is->seek_pos = pos;
 +        is->seek_rel = rel;
 +        is->seek_flags &= ~AVSEEK_FLAG_BYTE;
 +        if (seek_by_bytes)
 +            is->seek_flags |= AVSEEK_FLAG_BYTE;
 +        is->seek_req = 1;
 +    }
 +}
 +
 +/* pause or resume the video */
 +static void stream_toggle_pause(VideoState *is)
 +{
 +    if (is->paused) {
 +        is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
 +        if (is->read_pause_return != AVERROR(ENOSYS)) {
 +            is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
 +        }
 +        is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
 +    }
 +    update_external_clock_pts(is, get_external_clock(is));
 +    is->paused = !is->paused;
 +}
 +
 +static void toggle_pause(VideoState *is)
 +{
 +    stream_toggle_pause(is);
 +    is->step = 0;
 +}
 +
 +static void step_to_next_frame(VideoState *is)
 +{
 +    /* if the stream is paused unpause it, then step */
 +    if (is->paused)
 +        stream_toggle_pause(is);
 +    is->step = 1;
 +}
 +
 +static double compute_target_delay(double delay, VideoState *is)
 +{
 +    double sync_threshold, diff;
 +
 +    /* update delay to follow master synchronisation source */
 +    if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
 +        /* if video is slave, we try to correct big delays by
 +           duplicating or deleting a frame */
 +        diff = get_video_clock(is) - get_master_clock(is);
 +
 +        /* skip or repeat frame. We take into account the
 +           delay to compute the threshold. I still don't know
 +           if it is the best guess */
 +        sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
 +        if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
 +            if (diff <= -sync_threshold)
 +                delay = 0;
 +            else if (diff >= sync_threshold)
 +                delay = 2 * delay;
 +        }
 +    }
 +
 +    av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
 +            delay, -diff);
 +
 +    return delay;
 +}
 +
 +static void pictq_next_picture(VideoState *is) {
 +    /* update queue size and signal for next picture */
 +    if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
 +        is->pictq_rindex = 0;
 +
 +    SDL_LockMutex(is->pictq_mutex);
 +    is->pictq_size--;
 +    SDL_CondSignal(is->pictq_cond);
 +    SDL_UnlockMutex(is->pictq_mutex);
 +}
 +
 +static void pictq_prev_picture(VideoState *is) {
 +    VideoPicture *prevvp;
 +    /* update queue size and signal for the previous picture */
 +    prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
 +    if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
 +        SDL_LockMutex(is->pictq_mutex);
 +        if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE - 1) {
 +            if (--is->pictq_rindex == -1)
 +                is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
 +            is->pictq_size++;
 +        }
 +        SDL_CondSignal(is->pictq_cond);
 +        SDL_UnlockMutex(is->pictq_mutex);
 +    }
 +}
 +
 +static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
 +    double time = av_gettime() / 1000000.0;
 +    /* update current video pts */
 +    is->video_current_pts = pts;
 +    is->video_current_pts_drift = is->video_current_pts - time;
 +    is->video_current_pos = pos;
 +    is->frame_last_pts = pts;
 +    if (is->videoq.serial == serial)
 +        check_external_clock_sync(is, is->video_current_pts);
 +}
 +
 +/* called to display each frame */
 +static void video_refresh(void *opaque)
 +{
 +    VideoState *is = opaque;
 +    VideoPicture *vp;
 +    double time;
 +
 +    SubPicture *sp, *sp2;
 +
 +    if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
 +        check_external_clock_speed(is);
 +
 +    if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st)
 +        video_display(is);
 +
 +    if (is->video_st) {
 +        if (is->force_refresh)
 +            pictq_prev_picture(is);
 +retry:
 +        if (is->pictq_size == 0) {
 +            SDL_LockMutex(is->pictq_mutex);
 +            if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
 +                update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos, 0);
 +                is->frame_last_dropped_pts = AV_NOPTS_VALUE;
 +            }
 +            SDL_UnlockMutex(is->pictq_mutex);
 +            // nothing to do, no picture to display in the queue
 +        } else {
 +            double last_duration, duration, delay;
 +            /* dequeue the picture */
 +            vp = &is->pictq[is->pictq_rindex];
 +
 +            if (vp->serial != is->videoq.serial) {
 +                pictq_next_picture(is);
 +                goto retry;
 +            }
 +
 +            if (is->paused)
 +                goto display;
 +
 +            /* compute nominal last_duration */
 +            last_duration = vp->pts - is->frame_last_pts;
 +            if (last_duration > 0 && last_duration < is->max_frame_duration) {
 +                /* if duration of the last frame was sane, update last_duration in video state */
 +                is->frame_last_duration = last_duration;
 +            }
 +            delay = compute_target_delay(is->frame_last_duration, is);
 +
 +            time= av_gettime()/1000000.0;
 +            if (time < is->frame_timer + delay)
 +                return;
 +
 +            if (delay > 0)
 +                is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
 +
 +            SDL_LockMutex(is->pictq_mutex);
 +            update_video_pts(is, vp->pts, vp->pos, vp->serial);
 +            SDL_UnlockMutex(is->pictq_mutex);
 +
 +            if (is->pictq_size > 1) {
 +                VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
 +                duration = nextvp->pts - vp->pts;
 +                if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
 +                    is->frame_drops_late++;
 +                    pictq_next_picture(is);
 +                    goto retry;
 +                }
 +            }
 +
 +            if (is->subtitle_st) {
 +                if (is->subtitle_stream_changed) {
 +                    SDL_LockMutex(is->subpq_mutex);
 +
 +                    while (is->subpq_size) {
 +                        free_subpicture(&is->subpq[is->subpq_rindex]);
 +
 +                        /* update queue size and signal for next picture */
 +                        if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
 +                            is->subpq_rindex = 0;
 +
 +                        is->subpq_size--;
 +                    }
 +                    is->subtitle_stream_changed = 0;
 +
 +                    SDL_CondSignal(is->subpq_cond);
 +                    SDL_UnlockMutex(is->subpq_mutex);
 +                } else {
 +                    if (is->subpq_size > 0) {
 +                        sp = &is->subpq[is->subpq_rindex];
 +
 +                        if (is->subpq_size > 1)
 +                            sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
 +                        else
 +                            sp2 = NULL;
 +
 +                        if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
 +                                || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
 +                        {
 +                            free_subpicture(sp);
 +
 +                            /* update queue size and signal for next picture */
 +                            if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
 +                                is->subpq_rindex = 0;
 +
 +                            SDL_LockMutex(is->subpq_mutex);
 +                            is->subpq_size--;
 +                            SDL_CondSignal(is->subpq_cond);
 +                            SDL_UnlockMutex(is->subpq_mutex);
 +                        }
 +                    }
 +                }
 +            }
 +
 +display:
 +            /* display picture */
 +            if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
 +                video_display(is);
 +
 +            pictq_next_picture(is);
 +
 +            if (is->step && !is->paused)
 +                stream_toggle_pause(is);
 +        }
 +    }
 +    is->force_refresh = 0;
 +    if (show_status) {
 +        static int64_t last_time;
 +        int64_t cur_time;
 +        int aqsize, vqsize, sqsize;
 +        double av_diff;
 +
 +        cur_time = av_gettime();
 +        if (!last_time || (cur_time - last_time) >= 30000) {
 +            aqsize = 0;
 +            vqsize = 0;
 +            sqsize = 0;
 +            if (is->audio_st)
 +                aqsize = is->audioq.size;
 +            if (is->video_st)
 +                vqsize = is->videoq.size;
 +            if (is->subtitle_st)
 +                sqsize = is->subtitleq.size;
 +            av_diff = 0;
 +            if (is->audio_st && is->video_st)
 +                av_diff = get_audio_clock(is) - get_video_clock(is);
 +            printf("%7.2f A-V:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
 +                   get_master_clock(is),
 +                   av_diff,
 +                   is->frame_drops_early + is->frame_drops_late,
 +                   aqsize / 1024,
 +                   vqsize / 1024,
 +                   sqsize,
 +                   is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
 +                   is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
 +            fflush(stdout);
 +            last_time = cur_time;
 +        }
 +    }
 +}
 +
 +/* allocate a picture (needs to do that in main thread to avoid
 +   potential locking problems */
 +static void alloc_picture(VideoState *is)
 +{
 +    VideoPicture *vp;
 +
 +    vp = &is->pictq[is->pictq_windex];
 +
 +    if (vp->bmp)
 +        SDL_FreeYUVOverlay(vp->bmp);
 +
 +#if CONFIG_AVFILTER
 +    avfilter_unref_bufferp(&vp->picref);
 +#endif
 +
 +    video_open(is, 0, vp);
 +
 +    vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
 +                                   SDL_YV12_OVERLAY,
 +                                   screen);
 +    if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
 +        /* SDL allocates a buffer smaller than requested if the video
 +         * overlay hardware is unable to support the requested size. */
 +        fprintf(stderr, "Error: the video system does not support an image\n"
 +                        "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
 +                        "to reduce the image size.\n", vp->width, vp->height );
 +        do_exit(is);
 +    }
 +
 +    SDL_LockMutex(is->pictq_mutex);
 +    vp->allocated = 1;
 +    SDL_CondSignal(is->pictq_cond);
 +    SDL_UnlockMutex(is->pictq_mutex);
 +}
 +
 +static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
 +    int i, width, height;
 +    Uint8 *p, *maxp;
 +    for (i = 0; i < 3; i++) {
 +        width  = bmp->w;
 +        height = bmp->h;
 +        if (i > 0) {
 +            width  >>= 1;
 +            height >>= 1;
 +        }
 +        if (bmp->pitches[i] > width) {
 +            maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
 +            for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
 +                *(p+1) = *p;
 +        }
 +    }
 +}
 +
 +static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos, int serial)
 +{
 +    VideoPicture *vp;
 +    double frame_delay, pts = pts1;
 +
 +    /* compute the exact PTS for the picture if it is omitted in the stream
 +     * pts1 is the dts of the pkt / pts of the frame */
 +    if (pts != 0) {
 +        /* update video clock with pts, if present */
 +        is->video_clock = pts;
 +    } else {
 +        pts = is->video_clock;
 +    }
 +    /* update video clock for next frame */
 +    frame_delay = av_q2d(is->video_st->codec->time_base);
 +    /* for MPEG2, the frame can be repeated, so we update the
 +       clock accordingly */
 +    frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
 +    is->video_clock += frame_delay;
 +
 +#if defined(DEBUG_SYNC) && 0
 +    printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
 +           av_get_picture_type_char(src_frame->pict_type), pts, pts1);
 +#endif
 +
 +    /* wait until we have space to put a new picture */
 +    SDL_LockMutex(is->pictq_mutex);
 +
 +    /* keep the last already displayed picture in the queue */
 +    while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 2 &&
 +           !is->videoq.abort_request) {
 +        SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +    }
 +    SDL_UnlockMutex(is->pictq_mutex);
 +
 +    if (is->videoq.abort_request)
 +        return -1;
 +
 +    vp = &is->pictq[is->pictq_windex];
 +
 +#if CONFIG_AVFILTER
 +    vp->sample_aspect_ratio = ((AVFilterBufferRef *)src_frame->opaque)->video->sample_aspect_ratio;
 +#else
 +    vp->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, src_frame);
 +#endif
 +
 +    /* alloc or resize hardware picture buffer */
 +    if (!vp->bmp || vp->reallocate || !vp->allocated ||
 +        vp->width  != src_frame->width ||
 +        vp->height != src_frame->height) {
 +        SDL_Event event;
 +
 +        vp->allocated  = 0;
 +        vp->reallocate = 0;
 +        vp->width = src_frame->width;
 +        vp->height = src_frame->height;
 +
 +        /* the allocation must be done in the main thread to avoid
 +           locking problems. */
 +        event.type = FF_ALLOC_EVENT;
 +        event.user.data1 = is;
 +        SDL_PushEvent(&event);
 +
 +        /* wait until the picture is allocated */
 +        SDL_LockMutex(is->pictq_mutex);
 +        while (!vp->allocated && !is->videoq.abort_request) {
 +            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +        }
 +        /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
 +        if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
 +            while (!vp->allocated) {
 +                SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +            }
 +        }
 +        SDL_UnlockMutex(is->pictq_mutex);
 +
 +        if (is->videoq.abort_request)
 +            return -1;
 +    }
 +
 +    /* if the frame is not skipped, then display it */
 +    if (vp->bmp) {
 +        AVPicture pict = { { 0 } };
 +#if CONFIG_AVFILTER
 +        avfilter_unref_bufferp(&vp->picref);
 +        vp->picref = src_frame->opaque;
 +#endif
 +
 +        /* get a pointer on the bitmap */
 +        SDL_LockYUVOverlay (vp->bmp);
 +
 +        pict.data[0] = vp->bmp->pixels[0];
 +        pict.data[1] = vp->bmp->pixels[2];
 +        pict.data[2] = vp->bmp->pixels[1];
 +
 +        pict.linesize[0] = vp->bmp->pitches[0];
 +        pict.linesize[1] = vp->bmp->pitches[2];
 +        pict.linesize[2] = vp->bmp->pitches[1];
 +
 +#if CONFIG_AVFILTER
 +        // FIXME use direct rendering
 +        av_picture_copy(&pict, (AVPicture *)src_frame,
 +                        src_frame->format, vp->width, vp->height);
 +#else
 +        av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
 +        is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
 +            vp->width, vp->height, src_frame->format, vp->width, vp->height,
 +            AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
 +        if (is->img_convert_ctx == NULL) {
 +            fprintf(stderr, "Cannot initialize the conversion context\n");
 +            exit(1);
 +        }
 +        sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
 +                  0, vp->height, pict.data, pict.linesize);
 +#endif
 +        /* workaround SDL PITCH_WORKAROUND */
 +        duplicate_right_border_pixels(vp->bmp);
 +        /* update the bitmap content */
 +        SDL_UnlockYUVOverlay(vp->bmp);
 +
 +        vp->pts = pts;
 +        vp->pos = pos;
 +        vp->serial = serial;
 +
 +        /* now we can update the picture count */
 +        if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
 +            is->pictq_windex = 0;
 +        SDL_LockMutex(is->pictq_mutex);
 +        is->pictq_size++;
 +        SDL_UnlockMutex(is->pictq_mutex);
 +    }
 +    return 0;
 +}
 +
 +static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt, int *serial)
 +{
 +    int got_picture;
 +
 +    if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
 +        return -1;
 +
 +    if (pkt->data == flush_pkt.data) {
 +        avcodec_flush_buffers(is->video_st->codec);
 +
 +        SDL_LockMutex(is->pictq_mutex);
 +        // Make sure there are no long delay timers (ideally we should just flush the queue but that's harder)
 +        while (is->pictq_size && !is->videoq.abort_request) {
 +            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 +        }
 +        is->video_current_pos = -1;
 +        is->frame_last_pts = AV_NOPTS_VALUE;
 +        is->frame_last_duration = 0;
 +        is->frame_timer = (double)av_gettime() / 1000000.0;
 +        is->frame_last_dropped_pts = AV_NOPTS_VALUE;
 +        SDL_UnlockMutex(is->pictq_mutex);
 +
 +        return 0;
 +    }
 +
 +    if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
 +        return 0;
 +
 +    if (got_picture) {
 +        int ret = 1;
 +
 +        if (decoder_reorder_pts == -1) {
 +            *pts = av_frame_get_best_effort_timestamp(frame);
 +        } else if (decoder_reorder_pts) {
 +            *pts = frame->pkt_pts;
 +        } else {
 +            *pts = frame->pkt_dts;
 +        }
 +
 +        if (*pts == AV_NOPTS_VALUE) {
 +            *pts = 0;
 +        }
++        if (is->video_st->sample_aspect_ratio.num) {
++            frame->sample_aspect_ratio = is->video_st->sample_aspect_ratio;
++        }
 +
 +        if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
 +            SDL_LockMutex(is->pictq_mutex);
 +            if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) {
 +                double clockdiff = get_video_clock(is) - get_master_clock(is);
 +                double dpts = av_q2d(is->video_st->time_base) * *pts;
 +                double ptsdiff = dpts - is->frame_last_pts;
 +                if (fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
 +                     ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
 +                     clockdiff + ptsdiff - is->frame_last_filter_delay < 0) {
 +                    is->frame_last_dropped_pos = pkt->pos;
 +                    is->frame_last_dropped_pts = dpts;
 +                    is->frame_drops_early++;
 +                    ret = 0;
 +                }
 +            }
 +            SDL_UnlockMutex(is->pictq_mutex);
 +        }
 +
 +        return ret;
 +    }
 +    return 0;
 +}
 +
 +#if CONFIG_AVFILTER
 +static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
 +                                 AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
 +{
 +    int ret;
 +    AVFilterInOut *outputs = NULL, *inputs = NULL;
 +
 +    if (filtergraph) {
 +        outputs = avfilter_inout_alloc();
 +        inputs  = avfilter_inout_alloc();
 +        if (!outputs || !inputs) {
 +            ret = AVERROR(ENOMEM);
 +            goto fail;
 +        }
 +
 +        outputs->name       = av_strdup("in");
 +        outputs->filter_ctx = source_ctx;
 +        outputs->pad_idx    = 0;
 +        outputs->next       = NULL;
 +
 +        inputs->name        = av_strdup("out");
 +        inputs->filter_ctx  = sink_ctx;
 +        inputs->pad_idx     = 0;
 +        inputs->next        = NULL;
 +
 +        if ((ret = avfilter_graph_parse(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
 +            goto fail;
 +    } else {
 +        if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
 +            goto fail;
 +    }
 +
 +    ret = avfilter_graph_config(graph, NULL);
 +fail:
 +    avfilter_inout_free(&outputs);
 +    avfilter_inout_free(&inputs);
 +    return ret;
 +}
 +
 +static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
 +{
 +    static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
 +    char sws_flags_str[128];
 +    char buffersrc_args[256];
 +    int ret;
 +    AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
 +    AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
 +    AVCodecContext *codec = is->video_st->codec;
 +
 +    if (!buffersink_params)
 +        return AVERROR(ENOMEM);
 +
 +    av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
 +    snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
 +    graph->scale_sws_opts = av_strdup(sws_flags_str);
 +
 +    snprintf(buffersrc_args, sizeof(buffersrc_args),
 +             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
 +             frame->width, frame->height, frame->format,
 +             is->video_st->time_base.num, is->video_st->time_base.den,
 +             codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
 +
 +    if ((ret = avfilter_graph_create_filter(&filt_src,
 +                                            avfilter_get_by_name("buffer"),
 +                                            "ffplay_buffer", buffersrc_args, NULL,
 +                                            graph)) < 0)
 +        goto fail;
 +
 +    buffersink_params->pixel_fmts = pix_fmts;
 +    ret = avfilter_graph_create_filter(&filt_out,
 +                                       avfilter_get_by_name("ffbuffersink"),
 +                                       "ffplay_buffersink", NULL, buffersink_params, graph);
 +    if (ret < 0)
 +        goto fail;
 +
 +    /* SDL YUV code is not handling odd width/height for some driver
 +     * combinations, therefore we crop the picture to an even width/height. */
 +    if ((ret = avfilter_graph_create_filter(&filt_crop,
 +                                            avfilter_get_by_name("crop"),
 +                                            "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
 +        goto fail;
 +    if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
 +        goto fail;
 +
 +    if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
 +        goto fail;
 +
 +    is->in_video_filter  = filt_src;
 +    is->out_video_filter = filt_out;
 +
 +fail:
 +    av_freep(&buffersink_params);
 +    return ret;
 +}
 +
 +#endif  /* CONFIG_AVFILTER */
 +
 +static int video_thread(void *arg)
 +{
 +    AVPacket pkt = { 0 };
 +    VideoState *is = arg;
 +    AVFrame *frame = avcodec_alloc_frame();
 +    int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
 +    double pts;
 +    int ret;
 +    int serial = 0;
 +
 +#if CONFIG_AVFILTER
 +    AVCodecContext *codec = is->video_st->codec;
 +    AVFilterGraph *graph = avfilter_graph_alloc();
 +    AVFilterContext *filt_out = NULL, *filt_in = NULL;
 +    int last_w = 0;
 +    int last_h = 0;
 +    enum AVPixelFormat last_format = -2;
 +    int last_serial = -1;
 +
 +    if (codec->codec->capabilities & CODEC_CAP_DR1) {
 +        is->use_dr1 = 1;
 +        codec->get_buffer     = codec_get_buffer;
 +        codec->release_buffer = codec_release_buffer;
 +        codec->opaque         = &is->buffer_pool;
 +    }
 +#endif
 +
 +    for (;;) {
 +#if CONFIG_AVFILTER
 +        AVFilterBufferRef *picref;
 +        AVRational tb;
 +#endif
 +        while (is->paused && !is->videoq.abort_request)
 +            SDL_Delay(10);
 +
 +        avcodec_get_frame_defaults(frame);
 +        av_free_packet(&pkt);
 +
 +        ret = get_video_frame(is, frame, &pts_int, &pkt, &serial);
 +        if (ret < 0)
 +            goto the_end;
 +
 +        if (!ret)
 +            continue;
 +
 +#if CONFIG_AVFILTER
 +        if (   last_w != frame->width
 +            || last_h != frame->height
 +            || last_format != frame->format
 +            || last_serial != serial) {
 +            av_log(NULL, AV_LOG_DEBUG,
 +                   "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
 +                   last_w, last_h,
 +                   (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
 +                   frame->width, frame->height,
 +                   (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
 +            avfilter_graph_free(&graph);
 +            graph = avfilter_graph_alloc();
 +            if ((ret = configure_video_filters(graph, is, vfilters, frame)) < 0) {
 +                SDL_Event event;
 +                event.type = FF_QUIT_EVENT;
 +                event.user.data1 = is;
 +                SDL_PushEvent(&event);
 +                av_free_packet(&pkt);
 +                goto the_end;
 +            }
 +            filt_in  = is->in_video_filter;
 +            filt_out = is->out_video_filter;
 +            last_w = frame->width;
 +            last_h = frame->height;
 +            last_format = frame->format;
 +            last_serial = serial;
 +        }
 +
 +        frame->pts = pts_int;
 +        frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
 +        if (is->use_dr1 && frame->opaque) {
 +            FrameBuffer      *buf = frame->opaque;
 +            AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
 +                                        frame->data, frame->linesize,
 +                                        AV_PERM_READ | AV_PERM_PRESERVE,
 +                                        frame->width, frame->height,
 +                                        frame->format);
 +
 +            avfilter_copy_frame_props(fb, frame);
 +            fb->buf->priv           = buf;
 +            fb->buf->free           = filter_release_buffer;
 +
 +            buf->refcount++;
 +            av_buffersrc_add_ref(filt_in, fb, AV_BUFFERSRC_FLAG_NO_COPY);
 +
 +        } else
 +            av_buffersrc_write_frame(filt_in, frame);
 +
 +        av_free_packet(&pkt);
 +
 +        while (ret >= 0) {
 +            is->frame_last_returned_time = av_gettime() / 1000000.0;
 +
 +            ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
 +            if (ret < 0) {
 +                ret = 0;
 +                break;
 +            }
 +
 +            is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
 +            if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
 +                is->frame_last_filter_delay = 0;
 +
 +            avfilter_copy_buf_props(frame, picref);
 +
 +            pts_int = picref->pts;
 +            tb      = filt_out->inputs[0]->time_base;
 +            pos     = picref->pos;
 +            frame->opaque = picref;
 +
 +            if (av_cmp_q(tb, is->video_st->time_base)) {
 +                av_unused int64_t pts1 = pts_int;
 +                pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
 +                av_dlog(NULL, "video_thread(): "
 +                        "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
 +                        tb.num, tb.den, pts1,
 +                        is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
 +            }
 +            pts = pts_int * av_q2d(is->video_st->time_base);
 +            ret = queue_picture(is, frame, pts, pos, serial);
 +        }
 +#else
 +        pts = pts_int * av_q2d(is->video_st->time_base);
 +        ret = queue_picture(is, frame, pts, pkt.pos, serial);
 +#endif
 +
 +        if (ret < 0)
 +            goto the_end;
 +    }
 + the_end:
 +    avcodec_flush_buffers(is->video_st->codec);
 +#if CONFIG_AVFILTER
 +    avfilter_graph_free(&graph);
 +#endif
 +    av_free_packet(&pkt);
 +    avcodec_free_frame(&frame);
 +    return 0;
 +}
 +
 +static int subtitle_thread(void *arg)
 +{
 +    VideoState *is = arg;
 +    SubPicture *sp;
 +    AVPacket pkt1, *pkt = &pkt1;
 +    int got_subtitle;
 +    double pts;
 +    int i, j;
 +    int r, g, b, y, u, v, a;
 +
 +    for (;;) {
 +        while (is->paused && !is->subtitleq.abort_request) {
 +            SDL_Delay(10);
 +        }
 +        if (packet_queue_get(&is->subtitleq, pkt, 1, NULL) < 0)
 +            break;
 +
 +        if (pkt->data == flush_pkt.data) {
 +            avcodec_flush_buffers(is->subtitle_st->codec);
 +            continue;
 +        }
 +        SDL_LockMutex(is->subpq_mutex);
 +        while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
 +               !is->subtitleq.abort_request) {
 +            SDL_CondWait(is->subpq_cond, is->subpq_mutex);
 +        }
 +        SDL_UnlockMutex(is->subpq_mutex);
 +
 +        if (is->subtitleq.abort_request)
 +            return 0;
 +
 +        sp = &is->subpq[is->subpq_windex];
 +
 +       /* NOTE: ipts is the PTS of the _first_ picture beginning in
 +           this packet, if any */
 +        pts = 0;
 +        if (pkt->pts != AV_NOPTS_VALUE)
 +            pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
 +
 +        avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
 +                                 &got_subtitle, pkt);
 +        if (got_subtitle && sp->sub.format == 0) {
 +            if (sp->sub.pts != AV_NOPTS_VALUE)
 +                pts = sp->sub.pts / (double)AV_TIME_BASE;
 +            sp->pts = pts;
 +
 +            for (i = 0; i < sp->sub.num_rects; i++)
 +            {
 +                for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
 +                {
 +                    RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
 +                    y = RGB_TO_Y_CCIR(r, g, b);
 +                    u = RGB_TO_U_CCIR(r, g, b, 0);
 +                    v = RGB_TO_V_CCIR(r, g, b, 0);
 +                    YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
 +                }
 +            }
 +
 +            /* now we can update the picture count */
 +            if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
 +                is->subpq_windex = 0;
 +            SDL_LockMutex(is->subpq_mutex);
 +            is->subpq_size++;
 +            SDL_UnlockMutex(is->subpq_mutex);
 +        }
 +        av_free_packet(pkt);
 +    }
 +    return 0;
 +}
 +
 +/* copy samples for viewing in editor window */
 +static void update_sample_display(VideoState *is, short *samples, int samples_size)
 +{
 +    int size, len;
 +
 +    size = samples_size / sizeof(short);
 +    while (size > 0) {
 +        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
 +        if (len > size)
 +            len = size;
 +        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
 +        samples += len;
 +        is->sample_array_index += len;
 +        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
 +            is->sample_array_index = 0;
 +        size -= len;
 +    }
 +}
 +
 +/* return the wanted number of samples to get better sync if sync_type is video
 + * or external master clock */
 +static int synchronize_audio(VideoState *is, int nb_samples)
 +{
 +    int wanted_nb_samples = nb_samples;
 +
 +    /* if not master, then we try to remove or add samples to correct the clock */
 +    if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
 +        double diff, avg_diff;
 +        int min_nb_samples, max_nb_samples;
 +
 +        diff = get_audio_clock(is) - get_master_clock(is);
 +
 +        if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
 +            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
 +            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
 +                /* not enough measures to have a correct estimate */
 +                is->audio_diff_avg_count++;
 +            } else {
 +                /* estimate the A-V difference */
 +                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
 +
 +                if (fabs(avg_diff) >= is->audio_diff_threshold) {
 +                    wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
 +                    min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
 +                    max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
 +                    wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
 +                }
 +                av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
 +                        diff, avg_diff, wanted_nb_samples - nb_samples,
 +                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
 +            }
 +        } else {
 +            /* too big difference : may be initial PTS errors, so
 +               reset A-V filter */
 +            is->audio_diff_avg_count = 0;
 +            is->audio_diff_cum       = 0;
 +        }
 +    }
 +
 +    return wanted_nb_samples;
 +}
 +
 +/**
 + * Decode one audio frame and return its uncompressed size.
 + *
 + * The processed audio frame is decoded, converted if required, and
 + * stored in is->audio_buf, with size in bytes given by the return
 + * value.
 + */
 +static int audio_decode_frame(VideoState *is)
 +{
 +    AVPacket *pkt_temp = &is->audio_pkt_temp;
 +    AVPacket *pkt = &is->audio_pkt;
 +    AVCodecContext *dec = is->audio_st->codec;
 +    int len1, len2, data_size, resampled_data_size;
 +    int64_t dec_channel_layout;
 +    int got_frame;
 +    av_unused double audio_clock0;
 +    int new_packet = 0;
 +    int flush_complete = 0;
 +    int wanted_nb_samples;
 +
 +    for (;;) {
 +        /* NOTE: the audio packet can contain several frames */
 +        while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
 +            if (!is->frame) {
 +                if (!(is->frame = avcodec_alloc_frame()))
 +                    return AVERROR(ENOMEM);
 +            } else
 +                avcodec_get_frame_defaults(is->frame);
 +
 +            if (is->paused)
 +                return -1;
 +
 +            if (flush_complete)
 +                break;
 +            new_packet = 0;
 +            len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
 +            if (len1 < 0) {
 +                /* if error, we skip the frame */
 +                pkt_temp->size = 0;
 +                break;
 +            }
 +
 +            pkt_temp->data += len1;
 +            pkt_temp->size -= len1;
 +
 +            if (!got_frame) {
 +                /* stop sending empty packets if the decoder is finished */
 +                if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
 +                    flush_complete = 1;
 +                continue;
 +            }
 +            data_size = av_samples_get_buffer_size(NULL, is->frame->channels,
 +                                                   is->frame->nb_samples,
 +                                                   is->frame->format, 1);
 +
 +            dec_channel_layout =
 +                (is->frame->channel_layout && is->frame->channels == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
 +                is->frame->channel_layout : av_get_default_channel_layout(is->frame->channels);
 +            wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
 +
 +            if (is->frame->format        != is->audio_src.fmt            ||
 +                dec_channel_layout       != is->audio_src.channel_layout ||
 +                is->frame->sample_rate   != is->audio_src.freq           ||
 +                (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
 +                swr_free(&is->swr_ctx);
 +                is->swr_ctx = swr_alloc_set_opts(NULL,
 +                                                 is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
 +                                                 dec_channel_layout,           is->frame->format, is->frame->sample_rate,
 +                                                 0, NULL);
 +                if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
 +                    fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
 +                        is->frame->sample_rate,   av_get_sample_fmt_name(is->frame->format), (int)is->frame->channels,
 +                        is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
 +                    break;
 +                }
 +                is->audio_src.channel_layout = dec_channel_layout;
 +                is->audio_src.channels = is->frame->channels;
 +                is->audio_src.freq = is->frame->sample_rate;
 +                is->audio_src.fmt = is->frame->format;
 +            }
 +
 +            if (is->swr_ctx) {
 +                const uint8_t **in = (const uint8_t **)is->frame->extended_data;
 +                uint8_t **out = &is->audio_buf1;
 +                int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
 +                int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
 +                if (wanted_nb_samples != is->frame->nb_samples) {
 +                    if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
 +                                                wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
 +                        fprintf(stderr, "swr_set_compensation() failed\n");
 +                        break;
 +                    }
 +                }
 +                av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
 +                if (!is->audio_buf1)
 +                    return AVERROR(ENOMEM);
 +                len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
 +                if (len2 < 0) {
 +                    fprintf(stderr, "swr_convert() failed\n");
 +                    break;
 +                }
 +                if (len2 == out_count) {
 +                    fprintf(stderr, "warning: audio buffer is probably too small\n");
 +                    swr_init(is->swr_ctx);
 +                }
 +                is->audio_buf = is->audio_buf1;
 +                resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
 +            } else {
 +                is->audio_buf = is->frame->data[0];
 +                resampled_data_size = data_size;
 +            }
 +
 +            audio_clock0 = is->audio_clock;
 +            is->audio_clock += (double)data_size /
 +                (is->frame->channels * is->frame->sample_rate * av_get_bytes_per_sample(is->frame->format));
 +#ifdef DEBUG
 +            {
 +                static double last_clock;
 +                printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
 +                       is->audio_clock - last_clock,
 +                       is->audio_clock, audio_clock0);
 +                last_clock = is->audio_clock;
 +            }
 +#endif
 +            return resampled_data_size;
 +        }
 +
 +        /* free the current packet */
 +        if (pkt->data)
 +            av_free_packet(pkt);
 +        memset(pkt_temp, 0, sizeof(*pkt_temp));
 +
 +        if (is->paused || is->audioq.abort_request) {
 +            return -1;
 +        }
 +
 +        if (is->audioq.nb_packets == 0)
 +            SDL_CondSignal(is->continue_read_thread);
 +
 +        /* read next packet */
 +        if ((new_packet = packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
 +            return -1;
 +
 +        if (pkt->data == flush_pkt.data) {
 +            avcodec_flush_buffers(dec);
 +            flush_complete = 0;
 +        }
 +
 +        *pkt_temp = *pkt;
 +
 +        /* if update the audio clock with the pts */
 +        if (pkt->pts != AV_NOPTS_VALUE) {
 +            is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
 +        }
 +    }
 +}
 +
 +/* prepare a new audio buffer */
 +static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
 +{
 +    VideoState *is = opaque;
 +    int audio_size, len1;
 +    int bytes_per_sec;
 +    int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
 +
 +    audio_callback_time = av_gettime();
 +
 +    while (len > 0) {
 +        if (is->audio_buf_index >= is->audio_buf_size) {
 +           audio_size = audio_decode_frame(is);
 +           if (audio_size < 0) {
 +                /* if error, just output silence */
 +               is->audio_buf      = is->silence_buf;
 +               is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
 +           } else {
 +               if (is->show_mode != SHOW_MODE_VIDEO)
 +                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
 +               is->audio_buf_size = audio_size;
 +           }
 +           is->audio_buf_index = 0;
 +        }
 +        len1 = is->audio_buf_size - is->audio_buf_index;
 +        if (len1 > len)
 +            len1 = len;
 +        memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
 +        len -= len1;
 +        stream += len1;
 +        is->audio_buf_index += len1;
 +    }
 +    bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
 +    is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
 +    /* Let's assume the audio driver that is used by SDL has two periods. */
 +    is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
 +    is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
 +    if (is->audioq.serial == is->audio_pkt_temp_serial)
 +        check_external_clock_sync(is, is->audio_current_pts);
 +}
 +
 +static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
 +{
 +    SDL_AudioSpec wanted_spec, spec;
 +    const char *env;
 +    const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
 +
 +    env = SDL_getenv("SDL_AUDIO_CHANNELS");
 +    if (env) {
 +        wanted_nb_channels = atoi(env);
 +        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
 +    }
 +    if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
 +        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
 +        wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
 +    }
 +    wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
 +    wanted_spec.freq = wanted_sample_rate;
 +    if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
 +        fprintf(stderr, "Invalid sample rate or channel count!\n");
 +        return -1;
 +    }
 +    wanted_spec.format = AUDIO_S16SYS;
 +    wanted_spec.silence = 0;
 +    wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
 +    wanted_spec.callback = sdl_audio_callback;
 +    wanted_spec.userdata = opaque;
 +    while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
 +        fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
 +        wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
 +        if (!wanted_spec.channels) {
 +            fprintf(stderr, "No more channel combinations to try, audio open failed\n");
 +            return -1;
 +        }
 +        wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
 +    }
 +    if (spec.format != AUDIO_S16SYS) {
 +        fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
 +        return -1;
 +    }
 +    if (spec.channels != wanted_spec.channels) {
 +        wanted_channel_layout = av_get_default_channel_layout(spec.channels);
 +        if (!wanted_channel_layout) {
 +            fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
 +            return -1;
 +        }
 +    }
 +
 +    audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
 +    audio_hw_params->freq = spec.freq;
 +    audio_hw_params->channel_layout = wanted_channel_layout;
 +    audio_hw_params->channels =  spec.channels;
 +    return spec.size;
 +}
 +
 +/* open a given stream. Return 0 if OK */
 +static int stream_component_open(VideoState *is, int stream_index)
 +{
 +    AVFormatContext *ic = is->ic;
 +    AVCodecContext *avctx;
 +    AVCodec *codec;
 +    const char *forced_codec_name = NULL;
 +    AVDictionary *opts;
 +    AVDictionaryEntry *t = NULL;
 +
 +    if (stream_index < 0 || stream_index >= ic->nb_streams)
 +        return -1;
 +    avctx = ic->streams[stream_index]->codec;
 +
 +    codec = avcodec_find_decoder(avctx->codec_id);
 +
 +    switch(avctx->codec_type){
 +        case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
 +        case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
 +        case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
 +    }
 +    if (forced_codec_name)
 +        codec = avcodec_find_decoder_by_name(forced_codec_name);
 +    if (!codec) {
 +        if (forced_codec_name) fprintf(stderr, "No codec could be found with name '%s'\n", forced_codec_name);
 +        else                   fprintf(stderr, "No codec could be found with id %d\n", avctx->codec_id);
 +        return -1;
 +    }
 +
 +    avctx->codec_id = codec->id;
 +    avctx->workaround_bugs   = workaround_bugs;
 +    avctx->lowres            = lowres;
 +    if(avctx->lowres > codec->max_lowres){
 +        av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
 +                codec->max_lowres);
 +        avctx->lowres= codec->max_lowres;
 +    }
 +    avctx->idct_algo         = idct;
 +    avctx->skip_frame        = skip_frame;
 +    avctx->skip_idct         = skip_idct;
 +    avctx->skip_loop_filter  = skip_loop_filter;
 +    avctx->error_concealment = error_concealment;
 +
 +    if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
 +    if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
 +    if(codec->capabilities & CODEC_CAP_DR1)
 +        avctx->flags |= CODEC_FLAG_EMU_EDGE;
 +
 +    opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
 +    if (!av_dict_get(opts, "threads", NULL, 0))
 +        av_dict_set(&opts, "threads", "auto", 0);
 +    if (avcodec_open2(avctx, codec, &opts) < 0)
 +        return -1;
 +    if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
 +        return AVERROR_OPTION_NOT_FOUND;
 +    }
 +
 +    /* prepare audio output */
 +    if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
 +        int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
 +        if (audio_hw_buf_size < 0)
 +            return -1;
 +        is->audio_hw_buf_size = audio_hw_buf_size;
 +        is->audio_tgt = is->audio_src;
 +    }
 +
 +    ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
 +    switch (avctx->codec_type) {
 +    case AVMEDIA_TYPE_AUDIO:
 +        is->audio_stream = stream_index;
 +        is->audio_st = ic->streams[stream_index];
 +        is->audio_buf_size  = 0;
 +        is->audio_buf_index = 0;
 +
 +        /* init averaging filter */
 +        is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
 +        is->audio_diff_avg_count = 0;
 +        /* since we do not have a precise anough audio fifo fullness,
 +           we correct audio sync only if larger than this threshold */
 +        is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1);
 +
 +        memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
 +        memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
 +        packet_queue_start(&is->audioq);
 +        SDL_PauseAudio(0);
 +        break;
 +    case AVMEDIA_TYPE_VIDEO:
 +        is->video_stream = stream_index;
 +        is->video_st = ic->streams[stream_index];
 +
 +        packet_queue_start(&is->videoq);
 +        is->video_tid = SDL_CreateThread(video_thread, is);
 +        break;
 +    case AVMEDIA_TYPE_SUBTITLE:
 +        is->subtitle_stream = stream_index;
 +        is->subtitle_st = ic->streams[stream_index];
 +        packet_queue_start(&is->subtitleq);
 +
 +        is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
 +        break;
 +    default:
 +        break;
 +    }
 +    return 0;
 +}
 +
 +static void stream_component_close(VideoState *is, int stream_index)
 +{
 +    AVFormatContext *ic = is->ic;
 +    AVCodecContext *avctx;
 +
 +    if (stream_index < 0 || stream_index >= ic->nb_streams)
 +        return;
 +    avctx = ic->streams[stream_index]->codec;
 +
 +    switch (avctx->codec_type) {
 +    case AVMEDIA_TYPE_AUDIO:
 +        packet_queue_abort(&is->audioq);
 +
 +        SDL_CloseAudio();
 +
 +        packet_queue_flush(&is->audioq);
 +        av_free_packet(&is->audio_pkt);
 +        swr_free(&is->swr_ctx);
 +        av_freep(&is->audio_buf1);
 +        is->audio_buf1_size = 0;
 +        is->audio_buf = NULL;
 +        avcodec_free_frame(&is->frame);
 +
 +        if (is->rdft) {
 +            av_rdft_end(is->rdft);
 +            av_freep(&is->rdft_data);
 +            is->rdft = NULL;
 +            is->rdft_bits = 0;
 +        }
 +        break;
 +    case AVMEDIA_TYPE_VIDEO:
 +        packet_queue_abort(&is->videoq);
 +
 +        /* note: we also signal this mutex to make sure we deblock the
 +           video thread in all cases */
 +        SDL_LockMutex(is->pictq_mutex);
 +        SDL_CondSignal(is->pictq_cond);
 +        SDL_UnlockMutex(is->pictq_mutex);
 +
 +        SDL_WaitThread(is->video_tid, NULL);
 +
 +        packet_queue_flush(&is->videoq);
 +        break;
 +    case AVMEDIA_TYPE_SUBTITLE:
 +        packet_queue_abort(&is->subtitleq);
 +
 +        /* note: we also signal this mutex to make sure we deblock the
 +           video thread in all cases */
 +        SDL_LockMutex(is->subpq_mutex);
 +        is->subtitle_stream_changed = 1;
 +
 +        SDL_CondSignal(is->subpq_cond);
 +        SDL_UnlockMutex(is->subpq_mutex);
 +
 +        SDL_WaitThread(is->subtitle_tid, NULL);
 +
 +        packet_queue_flush(&is->subtitleq);
 +        break;
 +    default:
 +        break;
 +    }
 +
 +    ic->streams[stream_index]->discard = AVDISCARD_ALL;
 +    avcodec_close(avctx);
 +#if CONFIG_AVFILTER
 +    free_buffer_pool(&is->buffer_pool);
 +#endif
 +    switch (avctx->codec_type) {
 +    case AVMEDIA_TYPE_AUDIO:
 +        is->audio_st = NULL;
 +        is->audio_stream = -1;
 +        break;
 +    case AVMEDIA_TYPE_VIDEO:
 +        is->video_st = NULL;
 +        is->video_stream = -1;
 +        break;
 +    case AVMEDIA_TYPE_SUBTITLE:
 +        is->subtitle_st = NULL;
 +        is->subtitle_stream = -1;
 +        break;
 +    default:
 +        break;
 +    }
 +}
 +
 +static int decode_interrupt_cb(void *ctx)
 +{
 +    VideoState *is = ctx;
 +    return is->abort_request;
 +}
 +
 +static int is_realtime(AVFormatContext *s)
 +{
 +    if(   !strcmp(s->iformat->name, "rtp")
 +       || !strcmp(s->iformat->name, "rtsp")
 +       || !strcmp(s->iformat->name, "sdp")
 +    )
 +        return 1;
 +
 +    if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
 +                 || !strncmp(s->filename, "udp:", 4)
 +                )
 +    )
 +        return 1;
 +    return 0;
 +}
 +
 +/* this thread gets the stream from the disk or the network */
 +static int read_thread(void *arg)
 +{
 +    VideoState *is = arg;
 +    AVFormatContext *ic = NULL;
 +    int err, i, ret;
 +    int st_index[AVMEDIA_TYPE_NB];
 +    AVPacket pkt1, *pkt = &pkt1;
 +    int eof = 0;
 +    int pkt_in_play_range = 0;
 +    AVDictionaryEntry *t;
 +    AVDictionary **opts;
 +    int orig_nb_streams;
 +    SDL_mutex *wait_mutex = SDL_CreateMutex();
 +
 +    memset(st_index, -1, sizeof(st_index));
 +    is->last_video_stream = is->video_stream = -1;
 +    is->last_audio_stream = is->audio_stream = -1;
 +    is->last_subtitle_stream = is->subtitle_stream = -1;
 +
 +    ic = avformat_alloc_context();
 +    ic->interrupt_callback.callback = decode_interrupt_cb;
 +    ic->interrupt_callback.opaque = is;
 +    err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
 +    if (err < 0) {
 +        print_error(is->filename, err);
 +        ret = -1;
 +        goto fail;
 +    }
 +    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
 +        ret = AVERROR_OPTION_NOT_FOUND;
 +        goto fail;
 +    }
 +    is->ic = ic;
 +
 +    if (genpts)
 +        ic->flags |= AVFMT_FLAG_GENPTS;
 +
 +    opts = setup_find_stream_info_opts(ic, codec_opts);
 +    orig_nb_streams = ic->nb_streams;
 +
 +    err = avformat_find_stream_info(ic, opts);
 +    if (err < 0) {
 +        fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
 +        ret = -1;
 +        goto fail;
 +    }
 +    for (i = 0; i < orig_nb_streams; i++)
 +        av_dict_free(&opts[i]);
 +    av_freep(&opts);
 +
 +    if (ic->pb)
 +        ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
 +
 +    if (seek_by_bytes < 0)
 +        seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
 +
 +    is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
 +
 +    /* if seeking requested, we execute it */
 +    if (start_time != AV_NOPTS_VALUE) {
 +        int64_t timestamp;
 +
 +        timestamp = start_time;
 +        /* add the stream start time */
 +        if (ic->start_time != AV_NOPTS_VALUE)
 +            timestamp += ic->start_time;
 +        ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
 +        if (ret < 0) {
 +            fprintf(stderr, "%s: could not seek to position %0.3f\n",
 +                    is->filename, (double)timestamp / AV_TIME_BASE);
 +        }
 +    }
 +
 +    is->realtime = is_realtime(ic);
 +
 +    for (i = 0; i < ic->nb_streams; i++)
 +        ic->streams[i]->discard = AVDISCARD_ALL;
 +    if (!video_disable)
 +        st_index[AVMEDIA_TYPE_VIDEO] =
 +            av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
 +                                wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
 +    if (!audio_disable)
 +        st_index[AVMEDIA_TYPE_AUDIO] =
 +            av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
 +                                wanted_stream[AVMEDIA_TYPE_AUDIO],
 +                                st_index[AVMEDIA_TYPE_VIDEO],
 +                                NULL, 0);
 +    if (!video_disable)
 +        st_index[AVMEDIA_TYPE_SUBTITLE] =
 +            av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
 +                                wanted_stream[AVMEDIA_TYPE_SUBTITLE],
 +                                (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
 +                                 st_index[AVMEDIA_TYPE_AUDIO] :
 +                                 st_index[AVMEDIA_TYPE_VIDEO]),
 +                                NULL, 0);
 +    if (show_status) {
 +        av_dump_format(ic, 0, is->filename, 0);
 +    }
 +
 +    is->show_mode = show_mode;
 +
 +    /* open the streams */
 +    if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
 +        stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
 +    }
 +
 +    ret = -1;
 +    if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
 +        ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
 +    }
 +    if (is->show_mode == SHOW_MODE_NONE)
 +        is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
 +
 +    is->refresh_tid = SDL_CreateThread(refresh_thread, is);
 +
 +    if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
 +        stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
 +    }
 +
 +    if (is->video_stream < 0 && is->audio_stream < 0) {
 +        fprintf(stderr, "%s: could not open codecs\n", is->filename);
 +        ret = -1;
 +        goto fail;
 +    }
 +
 +    if (infinite_buffer < 0 && is->realtime)
 +        infinite_buffer = 1;
 +
 +    for (;;) {
 +        if (is->abort_request)
 +            break;
 +        if (is->paused != is->last_paused) {
 +            is->last_paused = is->paused;
 +            if (is->paused)
 +                is->read_pause_return = av_read_pause(ic);
 +            else
 +                av_read_play(ic);
 +        }
 +#if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
 +        if (is->paused &&
 +                (!strcmp(ic->iformat->name, "rtsp") ||
 +                 (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
 +            /* wait 10 ms to avoid trying to get another packet */
 +            /* XXX: horrible */
 +            SDL_Delay(10);
 +            continue;
 +        }
 +#endif
 +        if (is->seek_req) {
 +            int64_t seek_target = is->seek_pos;
 +            int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
 +            int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
 +// FIXME the +-2 is due to rounding being not done in the correct direction in generation
 +//      of the seek_pos/seek_rel variables
 +
 +            ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
 +            if (ret < 0) {
 +                fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
 +            } else {
 +                if (is->audio_stream >= 0) {
 +                    packet_queue_flush(&is->audioq);
 +                    packet_queue_put(&is->audioq, &flush_pkt);
 +                }
 +                if (is->subtitle_stream >= 0) {
 +                    packet_queue_flush(&is->subtitleq);
 +                    packet_queue_put(&is->subtitleq, &flush_pkt);
 +                }
 +                if (is->video_stream >= 0) {
 +                    packet_queue_flush(&is->videoq);
 +                    packet_queue_put(&is->videoq, &flush_pkt);
 +                }
 +                if (is->seek_flags & AVSEEK_FLAG_BYTE) {
 +                   //FIXME: use a cleaner way to signal obsolete external clock...
 +                   update_external_clock_pts(is, (double)AV_NOPTS_VALUE);
 +                } else {
 +                   update_external_clock_pts(is, seek_target / (double)AV_TIME_BASE);
 +                }
 +            }
 +            is->seek_req = 0;
 +            eof = 0;
 +            if (is->paused)
 +                step_to_next_frame(is);
 +        }
 +        if (is->queue_attachments_req) {
 +            avformat_queue_attached_pictures(ic);
 +            is->queue_attachments_req = 0;
 +        }
 +
 +        /* if the queue are full, no need to read more */
 +        if (infinite_buffer<1 &&
 +              (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
 +            || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
 +                && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
 +                && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
 +            /* wait 10 ms */
 +            SDL_LockMutex(wait_mutex);
 +            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
 +            SDL_UnlockMutex(wait_mutex);
 +            continue;
 +        }
 +        if (eof) {
 +            if (is->video_stream >= 0) {
 +                av_init_packet(pkt);
 +                pkt->data = NULL;
 +                pkt->size = 0;
 +                pkt->stream_index = is->video_stream;
 +                packet_queue_put(&is->videoq, pkt);
 +            }
 +            if (is->audio_stream >= 0 &&
 +                is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
 +                av_init_packet(pkt);
 +                pkt->data = NULL;
 +                pkt->size = 0;
 +                pkt->stream_index = is->audio_stream;
 +                packet_queue_put(&is->audioq, pkt);
 +            }
 +            SDL_Delay(10);
 +            if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
 +                if (loop != 1 && (!loop || --loop)) {
 +                    stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
 +                } else if (autoexit) {
 +                    ret = AVERROR_EOF;
 +                    goto fail;
 +                }
 +            }
 +            eof=0;
 +            continue;
 +        }
 +        ret = av_read_frame(ic, pkt);
 +        if (ret < 0) {
 +            if (ret == AVERROR_EOF || url_feof(ic->pb))
 +                eof = 1;
 +            if (ic->pb && ic->pb->error)
 +                break;
 +            SDL_LockMutex(wait_mutex);
 +            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
 +            SDL_UnlockMutex(wait_mutex);
 +            continue;
 +        }
 +        /* check if packet is in play range specified by user, then queue, otherwise discard */
 +        pkt_in_play_range = duration == AV_NOPTS_VALUE ||
 +                (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
 +                av_q2d(ic->streams[pkt->stream_index]->time_base) -
 +                (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
 +                <= ((double)duration / 1000000);
 +        if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
 +            packet_queue_put(&is->audioq, pkt);
 +        } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
 +            packet_queue_put(&is->videoq, pkt);
 +        } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
 +            packet_queue_put(&is->subtitleq, pkt);
 +        } else {
 +            av_free_packet(pkt);
 +        }
 +    }
 +    /* wait until the end */
 +    while (!is->abort_request) {
 +        SDL_Delay(100);
 +    }
 +
 +    ret = 0;
 + fail:
 +    /* close each stream */
 +    if (is->audio_stream >= 0)
 +        stream_component_close(is, is->audio_stream);
 +    if (is->video_stream >= 0)
 +        stream_component_close(is, is->video_stream);
 +    if (is->subtitle_stream >= 0)
 +        stream_component_close(is, is->subtitle_stream);
 +    if (is->ic) {
 +        avformat_close_input(&is->ic);
 +    }
 +
 +    if (ret != 0) {
 +        SDL_Event event;
 +
 +        event.type = FF_QUIT_EVENT;
 +        event.user.data1 = is;
 +        SDL_PushEvent(&event);
 +    }
 +    SDL_DestroyMutex(wait_mutex);
 +    return 0;
 +}
 +
 +static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
 +{
 +    VideoState *is;
 +
 +    is = av_mallocz(sizeof(VideoState));
 +    if (!is)
 +        return NULL;
 +    av_strlcpy(is->filename, filename, sizeof(is->filename));
 +    is->iformat = iformat;
 +    is->ytop    = 0;
 +    is->xleft   = 0;
 +
 +    /* start video display */
 +    is->pictq_mutex = SDL_CreateMutex();
 +    is->pictq_cond  = SDL_CreateCond();
 +
 +    is->subpq_mutex = SDL_CreateMutex();
 +    is->subpq_cond  = SDL_CreateCond();
 +
 +    packet_queue_init(&is->videoq);
 +    packet_queue_init(&is->audioq);
 +    packet_queue_init(&is->subtitleq);
 +
 +    is->continue_read_thread = SDL_CreateCond();
 +
 +    //FIXME: use a cleaner way to signal obsolete external clock...
 +    update_external_clock_pts(is, (double)AV_NOPTS_VALUE);
 +    update_external_clock_speed(is, 1.0);
 +    is->audio_current_pts_drift = -av_gettime() / 1000000.0;
 +    is->video_current_pts_drift = is->audio_current_pts_drift;
 +    is->av_sync_type = av_sync_type;
 +    is->read_tid     = SDL_CreateThread(read_thread, is);
 +    if (!is->read_tid) {
 +        av_free(is);
 +        return NULL;
 +    }
 +    return is;
 +}
 +
 +static void stream_cycle_channel(VideoState *is, int codec_type)
 +{
 +    AVFormatContext *ic = is->ic;
 +    int start_index, stream_index;
 +    int old_index;
 +    AVStream *st;
 +
 +    if (codec_type == AVMEDIA_TYPE_VIDEO) {
 +        start_index = is->last_video_stream;
 +        old_index = is->video_stream;
 +    } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
 +        start_index = is->last_audio_stream;
 +        old_index = is->audio_stream;
 +    } else {
 +        start_index = is->last_subtitle_stream;
 +        old_index = is->subtitle_stream;
 +    }
 +    stream_index = start_index;
 +    for (;;) {
 +        if (++stream_index >= is->ic->nb_streams)
 +        {
 +            if (codec_type == AVMEDIA_TYPE_SUBTITLE)
 +            {
 +                stream_index = -1;
 +                is->last_subtitle_stream = -1;
 +                goto the_end;
 +            }
 +            if (start_index == -1)
 +                return;
 +            stream_index = 0;
 +        }
 +        if (stream_index == start_index)
 +            return;
 +        st = ic->streams[stream_index];
 +        if (st->codec->codec_type == codec_type) {
 +            /* check that parameters are OK */
 +            switch (codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                if (st->codec->sample_rate != 0 &&
 +                    st->codec->channels != 0)
 +                    goto the_end;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                goto the_end;
 +            default:
 +                break;
 +            }
 +        }
 +    }
 + the_end:
 +    stream_component_close(is, old_index);
 +    stream_component_open(is, stream_index);
 +    if (codec_type == AVMEDIA_TYPE_VIDEO)
 +        is->queue_attachments_req = 1;
 +}
 +
 +
 +static void toggle_full_screen(VideoState *is)
 +{
 +#if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
 +    /* OS X needs to reallocate the SDL overlays */
 +    int i;
 +    for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
 +        is->pictq[i].reallocate = 1;
 +#endif
 +    is_full_screen = !is_full_screen;
 +    video_open(is, 1, NULL);
 +}
 +
 +static void toggle_audio_display(VideoState *is)
 +{
 +    int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 +    is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
 +    fill_rectangle(screen,
 +                is->xleft, is->ytop, is->width, is->height,
 +                bgcolor, 1);
 +}
 +
 +/* handle an event sent by the GUI */
 +static void event_loop(VideoState *cur_stream)
 +{
 +    SDL_Event event;
 +    double incr, pos, frac;
 +
 +    for (;;) {
 +        double x;
 +        SDL_WaitEvent(&event);
 +        switch (event.type) {
 +        case SDL_KEYDOWN:
 +            if (exit_on_keydown) {
 +                do_exit(cur_stream);
 +                break;
 +            }
 +            switch (event.key.keysym.sym) {
 +            case SDLK_ESCAPE:
 +            case SDLK_q:
 +                do_exit(cur_stream);
 +                break;
 +            case SDLK_f:
 +                toggle_full_screen(cur_stream);
 +                cur_stream->force_refresh = 1;
 +                break;
 +            case SDLK_p:
 +            case SDLK_SPACE:
 +                toggle_pause(cur_stream);
 +                break;
 +            case SDLK_s: // S: Step to next frame
 +                step_to_next_frame(cur_stream);
 +                break;
 +            case SDLK_a:
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
 +                break;
 +            case SDLK_v:
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
 +                break;
 +            case SDLK_t:
 +                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
 +                break;
 +            case SDLK_w:
 +                toggle_audio_display(cur_stream);
 +                cur_stream->force_refresh = 1;
 +                break;
 +            case SDLK_PAGEUP:
 +                incr = 600.0;
 +                goto do_seek;
 +            case SDLK_PAGEDOWN:
 +                incr = -600.0;
 +                goto do_seek;
 +            case SDLK_LEFT:
 +                incr = -10.0;
 +                goto do_seek;
 +            case SDLK_RIGHT:
 +                incr = 10.0;
 +                goto do_seek;
 +            case SDLK_UP:
 +                incr = 60.0;
 +                goto do_seek;
 +            case SDLK_DOWN:
 +                incr = -60.0;
 +            do_seek:
 +                    if (seek_by_bytes) {
 +                        if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
 +                            pos = cur_stream->video_current_pos;
 +                        } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
 +                            pos = cur_stream->audio_pkt.pos;
 +                        } else
 +                            pos = avio_tell(cur_stream->ic->pb);
 +                        if (cur_stream->ic->bit_rate)
 +                            incr *= cur_stream->ic->bit_rate / 8.0;
 +                        else
 +                            incr *= 180000.0;
 +                        pos += incr;
 +                        stream_seek(cur_stream, pos, incr, 1);
 +                    } else {
 +                        pos = get_master_clock(cur_stream);
 +                        pos += incr;
 +                        if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
 +                            pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
 +                        stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
 +                    }
 +                break;
 +            default:
 +                break;
 +            }
 +            break;
 +        case SDL_VIDEOEXPOSE:
 +            cur_stream->force_refresh = 1;
 +            break;
 +        case SDL_MOUSEBUTTONDOWN:
 +            if (exit_on_mousedown) {
 +                do_exit(cur_stream);
 +                break;
 +            }
 +        case SDL_MOUSEMOTION:
 +            if (cursor_hidden) {
 +                SDL_ShowCursor(1);
 +                cursor_hidden = 0;
 +            }
 +            cursor_last_shown = av_gettime();
 +            if (event.type == SDL_MOUSEBUTTONDOWN) {
 +                x = event.button.x;
 +            } else {
 +                if (event.motion.state != SDL_PRESSED)
 +                    break;
 +                x = event.motion.x;
 +            }
 +                if (seek_by_bytes || cur_stream->ic->duration <= 0) {
 +                    uint64_t size =  avio_size(cur_stream->ic->pb);
 +                    stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
 +                } else {
 +                    int64_t ts;
 +                    int ns, hh, mm, ss;
 +                    int tns, thh, tmm, tss;
 +                    tns  = cur_stream->ic->duration / 1000000LL;
 +                    thh  = tns / 3600;
 +                    tmm  = (tns % 3600) / 60;
 +                    tss  = (tns % 60);
 +                    frac = x / cur_stream->width;
 +                    ns   = frac * tns;
 +                    hh   = ns / 3600;
 +                    mm   = (ns % 3600) / 60;
 +                    ss   = (ns % 60);
 +                    fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
 +                            hh, mm, ss, thh, tmm, tss);
 +                    ts = frac * cur_stream->ic->duration;
 +                    if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
 +                        ts += cur_stream->ic->start_time;
 +                    stream_seek(cur_stream, ts, 0, 0);
 +                }
 +            break;
 +        case SDL_VIDEORESIZE:
 +                screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
 +                                          SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
 +                screen_width  = cur_stream->width  = event.resize.w;
 +                screen_height = cur_stream->height = event.resize.h;
 +                cur_stream->force_refresh = 1;
 +            break;
 +        case SDL_QUIT:
 +        case FF_QUIT_EVENT:
 +            do_exit(cur_stream);
 +            break;
 +        case FF_ALLOC_EVENT:
 +            alloc_picture(event.user.data1);
 +            break;
 +        case FF_REFRESH_EVENT:
 +            if (!cursor_hidden && av_gettime() - cursor_last_shown > CURSOR_HIDE_DELAY) {
 +                SDL_ShowCursor(0);
 +                cursor_hidden = 1;
 +            }
 +            video_refresh(event.user.data1);
 +            cur_stream->refresh = 0;
 +            break;
 +        default:
 +            break;
 +        }
 +    }
 +}
 +
 +static int opt_frame_size(void *optctx, const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
 +    return opt_default(NULL, "video_size", arg);
 +}
 +
 +static int opt_width(void *optctx, const char *opt, const char *arg)
 +{
 +    screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
 +    return 0;
 +}
 +
 +static int opt_height(void *optctx, const char *opt, const char *arg)
 +{
 +    screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
 +    return 0;
 +}
 +
 +static int opt_format(void *optctx, const char *opt, const char *arg)
 +{
 +    file_iformat = av_find_input_format(arg);
 +    if (!file_iformat) {
 +        fprintf(stderr, "Unknown input format: %s\n", arg);
 +        return AVERROR(EINVAL);
 +    }
 +    return 0;
 +}
 +
 +static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
 +    return opt_default(NULL, "pixel_format", arg);
 +}
 +
 +static int opt_sync(void *optctx, const char *opt, const char *arg)
 +{
 +    if (!strcmp(arg, "audio"))
 +        av_sync_type = AV_SYNC_AUDIO_MASTER;
 +    else if (!strcmp(arg, "video"))
 +        av_sync_type = AV_SYNC_VIDEO_MASTER;
 +    else if (!strcmp(arg, "ext"))
 +        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
 +    else {
 +        fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
 +        exit(1);
 +    }
 +    return 0;
 +}
 +
 +static int opt_seek(void *optctx, const char *opt, const char *arg)
 +{
 +    start_time = parse_time_or_die(opt, arg, 1);
 +    return 0;
 +}
 +
 +static int opt_duration(void *optctx, const char *opt, const char *arg)
 +{
 +    duration = parse_time_or_die(opt, arg, 1);
 +    return 0;
 +}
 +
 +static int opt_show_mode(void *optctx, const char *opt, const char *arg)
 +{
 +    show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
 +                !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
 +                !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
 +                parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
 +    return 0;
 +}
 +
 +static void opt_input_file(void *optctx, const char *filename)
 +{
 +    if (input_filename) {
 +        fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
 +                filename, input_filename);
 +        exit(1);
 +    }
 +    if (!strcmp(filename, "-"))
 +        filename = "pipe:";
 +    input_filename = filename;
 +}
 +
 +static int opt_codec(void *optctx, const char *opt, const char *arg)
 +{
 +   const char *spec = strchr(opt, ':');
 +   if (!spec) {
 +       fprintf(stderr, "No media specifier was specified in '%s' in option '%s'\n",
 +               arg, opt);
 +       return AVERROR(EINVAL);
 +   }
 +   spec++;
 +   switch (spec[0]) {
 +   case 'a' :    audio_codec_name = arg; break;
 +   case 's' : subtitle_codec_name = arg; break;
 +   case 'v' :    video_codec_name = arg; break;
 +   default:
 +       fprintf(stderr, "Invalid media specifier '%s' in option '%s'\n", spec, opt);
 +       return AVERROR(EINVAL);
 +   }
 +   return 0;
 +}
 +
 +static int dummy;
 +
 +static const OptionDef options[] = {
 +#include "cmdutils_common_opts.h"
 +    { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
 +    { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
 +    { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
 +    { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
 +    { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
 +    { "vn", OPT_BOOL, { &video_disable }, "disable video" },
 +    { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
 +    { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
 +    { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
 +    { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
 +    { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
 +    { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
 +    { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
 +    { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
 +    { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
 +    { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
 +    { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
 +    { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
 +    { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
 +    { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
 +    { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
 +    { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
 +    { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
 +    { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
 +    { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo",  "algo" },
 +    { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options",  "bit_mask" },
 +    { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
 +    { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
 +    { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
 +    { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
 +    { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
 +    { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
 +    { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
 +    { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
 +#if CONFIG_AVFILTER
 +    { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "set video filters", "filter_graph" },
 +#endif
 +    { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
 +    { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
 +    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
 +    { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
 +    { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
 +    { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
 +    { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
 +    { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
 +    { NULL, },
 +};
 +
 +static void show_usage(void)
 +{
 +    av_log(NULL, AV_LOG_INFO, "Simple media player\n");
 +    av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
 +    av_log(NULL, AV_LOG_INFO, "\n");
 +}
 +
 +void show_help_default(const char *opt, const char *arg)
 +{
 +    av_log_set_callback(log_callback_help);
 +    show_usage();
 +    show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
 +    show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
 +    printf("\n");
 +    show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
 +    show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
 +#if !CONFIG_AVFILTER
 +    show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
 +#else
 +    show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
 +#endif
 +    printf("\nWhile playing:\n"
 +           "q, ESC              quit\n"
 +           "f                   toggle full screen\n"
 +           "p, SPC              pause\n"
 +           "a                   cycle audio channel\n"
 +           "v                   cycle video channel\n"
 +           "t                   cycle subtitle channel\n"
 +           "w                   show audio waves\n"
 +           "s                   activate frame-step mode\n"
 +           "left/right          seek backward/forward 10 seconds\n"
 +           "down/up             seek backward/forward 1 minute\n"
 +           "page down/page up   seek backward/forward 10 minutes\n"
 +           "mouse click         seek to percentage in file corresponding to fraction of width\n"
 +           );
 +}
 +
 +static int lockmgr(void **mtx, enum AVLockOp op)
 +{
 +   switch(op) {
 +      case AV_LOCK_CREATE:
 +          *mtx = SDL_CreateMutex();
 +          if(!*mtx)
 +              return 1;
 +          return 0;
 +      case AV_LOCK_OBTAIN:
 +          return !!SDL_LockMutex(*mtx);
 +      case AV_LOCK_RELEASE:
 +          return !!SDL_UnlockMutex(*mtx);
 +      case AV_LOCK_DESTROY:
 +          SDL_DestroyMutex(*mtx);
 +          return 0;
 +   }
 +   return 1;
 +}
 +
 +/* Called from the main */
 +int main(int argc, char **argv)
 +{
 +    int flags;
 +    VideoState *is;
 +    char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
 +
 +    av_log_set_flags(AV_LOG_SKIP_REPEATED);
 +    parse_loglevel(argc, argv, options);
 +
 +    /* register all codecs, demux and protocols */
 +    avcodec_register_all();
 +#if CONFIG_AVDEVICE
 +    avdevice_register_all();
 +#endif
 +#if CONFIG_AVFILTER
 +    avfilter_register_all();
 +#endif
 +    av_register_all();
 +    avformat_network_init();
 +
 +    init_opts();
 +
 +    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 +    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 +
 +    show_banner(argc, argv, options);
 +
 +    parse_options(NULL, argc, argv, options, opt_input_file);
 +
 +    if (!input_filename) {
 +        show_usage();
 +        fprintf(stderr, "An input file must be specified\n");
 +        fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
 +        exit(1);
 +    }
 +
 +    if (display_disable) {
 +        video_disable = 1;
 +    }
 +    flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
 +    if (audio_disable)
 +        flags &= ~SDL_INIT_AUDIO;
 +    if (display_disable)
 +        SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
 +#if !defined(__MINGW32__) && !defined(__APPLE__)
 +    flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
 +#endif
 +    if (SDL_Init (flags)) {
 +        fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
 +        fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
 +        exit(1);
 +    }
 +
 +    if (!display_disable) {
 +#if HAVE_SDL_VIDEO_SIZE
 +        const SDL_VideoInfo *vi = SDL_GetVideoInfo();
 +        fs_screen_width = vi->current_w;
 +        fs_screen_height = vi->current_h;
 +#endif
 +    }
 +
 +    SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
 +    SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
 +    SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
 +
 +    if (av_lockmgr_register(lockmgr)) {
 +        fprintf(stderr, "Could not initialize lock manager!\n");
 +        do_exit(NULL);
 +    }
 +
 +    av_init_packet(&flush_pkt);
 +    flush_pkt.data = (char *)(intptr_t)"FLUSH";
 +
 +    is = stream_open(input_filename, file_iformat);
 +    if (!is) {
 +        fprintf(stderr, "Failed to initialize VideoState!\n");
 +        do_exit(NULL);
 +    }
 +
 +    event_loop(is);
 +
 +    /* never returns */
 +
 +    return 0;
 +}