/* no AV correction is done if too big error */
#define AV_NOSYNC_THRESHOLD 10.0
-#define FRAME_SKIP_FACTOR 0.05
-
/* maximum audio speed change to get correct sync */
#define SAMPLE_CORRECTION_PERCENT_MAX 10
typedef struct VideoPicture {
double pts; ///<presentation time stamp for this picture
- double target_clock; ///<av_gettime() time at which this should be displayed ideally
double duration; ///<expected duration of the frame
int64_t pos; ///<byte position in file
+ int skip;
SDL_Overlay *bmp;
int width, height; /* source height & width */
int allocated;
double frame_timer;
double frame_last_pts;
- double frame_last_delay;
+ double frame_last_duration;
double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
int video_stream;
AVStream *video_st;
AVFilterContext *out_video_filter; ///<the last filter in the video chain
#endif
- float skip_frames;
- float skip_frames_index;
int refresh;
} VideoState;
if(screen && is->width == screen->w && screen->w == w
&& is->height== screen->h && screen->h == h)
return 0;
-
-#ifndef __APPLE__
screen = SDL_SetVideoMode(w, h, 0, flags);
-#else
- /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
- screen = SDL_SetVideoMode(w, h, 24, flags);
-#endif
if (!screen) {
fprintf(stderr, "SDL: could not set video mode - exiting\n");
do_exit(is);
is->paused = !is->paused;
}
-static double compute_target_time(double frame_current_pts, VideoState *is)
+static double compute_target_delay(double delay, VideoState *is)
{
- double delay, sync_threshold, diff;
-
- /* compute nominal delay */
- delay = frame_current_pts - is->frame_last_pts;
- if (delay <= 0 || delay >= 10.0) {
- /* if incorrect delay, use previous one */
- delay = is->frame_last_delay;
- } else {
- is->frame_last_delay = delay;
- }
- is->frame_last_pts = frame_current_pts;
+ double sync_threshold, diff;
/* update delay to follow master synchronisation source */
if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
delay = 2 * delay;
}
}
- is->frame_timer += delay;
- av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
- delay, frame_current_pts, -diff);
+ 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;
- return is->frame_timer;
+ SDL_LockMutex(is->pictq_mutex);
+ is->pictq_size--;
+ SDL_CondSignal(is->pictq_cond);
+ SDL_UnlockMutex(is->pictq_mutex);
}
/* called to display each frame */
//nothing to do, no picture to display in the que
} else {
double time= av_gettime()/1000000.0;
- double next_target;
+ double last_duration, duration, delay;
/* dequeue the picture */
vp = &is->pictq[is->pictq_rindex];
- if(time < vp->target_clock)
+ if (vp->skip) {
+ pictq_next_picture(is);
+ goto retry;
+ }
+
+ /* compute nominal last_duration */
+ last_duration = vp->pts - is->frame_last_pts;
+ if (last_duration > 0 && last_duration < 10.0) {
+ /* 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);
+
+ if(time < is->frame_timer + delay)
return;
+
+ is->frame_last_pts = vp->pts;
+ if (delay > 0)
+ is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
+
/* update current video pts */
is->video_current_pts = vp->pts;
is->video_current_pts_drift = is->video_current_pts - time;
is->video_current_pos = vp->pos;
- if(is->pictq_size > 1){
- VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
- assert(nextvp->target_clock >= vp->target_clock);
- next_target= nextvp->target_clock;
- }else{
- next_target= vp->target_clock + vp->duration;
+
+ if(is->pictq_size > 1) {
+ VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
+ duration = nextvp->pts - vp->pts; // More accurate this way, 1/time_base is often not reflecting FPS
+ } else {
+ duration = vp->duration;
}
- if((framedrop>0 || (framedrop && is->audio_st)) && time > next_target){
- is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
+
+ if((framedrop>0 || (framedrop && is->audio_st)) && time > is->frame_timer + duration){
if(is->pictq_size > 1){
- /* 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);
+ pictq_next_picture(is);
goto retry;
}
}
if (!display_disable)
video_display(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);
+ pictq_next_picture(is);
}
} else if (is->audio_st) {
/* draw the next audio frame */
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 s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
+ printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
get_master_clock(is),
av_diff,
- FFMAX(is->skip_frames-1, 0),
aqsize / 1024,
vqsize / 1024,
sqsize,
/* wait until we have space to put a new picture */
SDL_LockMutex(is->pictq_mutex);
- if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
- is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
-
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
!is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
vp->pts = pts;
vp->pos = pos;
+ vp->skip = 0;
/* now we can update the picture count */
if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_windex = 0;
SDL_LockMutex(is->pictq_mutex);
- vp->target_clock= compute_target_time(vp->pts, is);
-
is->pictq_size++;
SDL_UnlockMutex(is->pictq_mutex);
}
SDL_LockMutex(is->pictq_mutex);
//Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
- is->pictq[i].target_clock= 0;
+ is->pictq[i].skip = 1;
}
while (is->pictq_size && !is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
SDL_UnlockMutex(is->pictq_mutex);
is->frame_last_pts = AV_NOPTS_VALUE;
- is->frame_last_delay = 0;
+ is->frame_last_duration = 0;
is->frame_timer = (double)av_gettime() / 1000000.0;
- is->skip_frames = 1;
- is->skip_frames_index = 0;
return 0;
}
*pts = 0;
}
- is->skip_frames_index += 1;
- if(is->skip_frames_index >= is->skip_frames){
- is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
- return 1;
- }
+ return 1;
}
return 0;
packet_queue_end(&is->audioq);
if (is->swr_ctx)
swr_free(&is->swr_ctx);
+ av_free_packet(&is->audio_pkt);
+
+ if (is->rdft) {
+ av_rdft_end(is->rdft);
+ av_freep(&is->rdft_data);
+ }
break;
case AVMEDIA_TYPE_VIDEO:
packet_queue_abort(&is->videoq);
static int opt_help(const char *opt, const char *arg)
{
- const AVClass *class;
av_log_set_callback(log_callback_help);
show_usage();
show_help_options(options, "Main options:\n",
show_help_options(options, "\nAdvanced options:\n",
OPT_EXPERT, OPT_EXPERT);
printf("\n");
- class = avcodec_get_class();
- av_opt_show2(&class, NULL,
- AV_OPT_FLAG_DECODING_PARAM, 0);
- printf("\n");
- class = avformat_get_class();
- av_opt_show2(&class, NULL,
- AV_OPT_FLAG_DECODING_PARAM, 0);
+ 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
- printf("\n");
- class = sws_get_class();
- av_opt_show2(&class, NULL,
- AV_OPT_FLAG_ENCODING_PARAM, 0);
+ show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
#endif
printf("\nWhile playing:\n"
"q, ESC quit\n"
projects / ffmpeg / blobdiff