diff options
| -rw-r--r-- | cmdutils.c | 27 | ||||
| -rw-r--r-- | cmdutils.h | 24 | ||||
| -rw-r--r-- | ffplay.c | 35 |
3 files changed, 63 insertions, 23 deletions
diff --git a/cmdutils.c b/cmdutils.c index 762537aa75..864d772213 100644 --- a/cmdutils.c +++ b/cmdutils.c @@ -677,3 +677,30 @@ int read_file(const char *filename, char **bufptr, size_t *size) fclose(f); return 0; } + +void init_pts_correction(PtsCorrectionContext *ctx) +{ + ctx->num_faulty_pts = ctx->num_faulty_dts = 0; + ctx->last_pts = ctx->last_dts = INT64_MIN; +} + +int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t reordered_pts, int64_t dts) +{ + int64_t pts = AV_NOPTS_VALUE; + + if (dts != AV_NOPTS_VALUE) { + ctx->num_faulty_dts += dts <= ctx->last_dts; + ctx->last_dts = dts; + } + if (reordered_pts != AV_NOPTS_VALUE) { + ctx->num_faulty_pts += reordered_pts <= ctx->last_pts; + ctx->last_pts = reordered_pts; + } + if ((ctx->num_faulty_pts<ctx->num_faulty_dts || dts == AV_NOPTS_VALUE) + && reordered_pts != AV_NOPTS_VALUE) + pts = reordered_pts; + else + pts = dts; + + return pts; +} diff --git a/cmdutils.h b/cmdutils.h index 68a29b4033..c2c3c466ad 100644 --- a/cmdutils.h +++ b/cmdutils.h @@ -226,4 +226,28 @@ int read_yesno(void); */ int read_file(const char *filename, char **bufptr, size_t *size); +typedef struct { + int64_t num_faulty_pts; /// Number of incorrect PTS values so far + int64_t num_faulty_dts; /// Number of incorrect DTS values so far + int64_t last_pts; /// PTS of the last frame + int64_t last_dts; /// DTS of the last frame +} PtsCorrectionContext; + +/** + * Resets the state of the PtsCorrectionContext. + */ +void init_pts_correction(PtsCorrectionContext *ctx); + +/** + * Attempts to guess proper monotonic timestamps for decoded video frames + * which might have incorrect times. Input timestamps may wrap around, in + * which case the output will as well. + * + * @param pts The pts field of the decoded AVPacket, as passed through + * AVCodecContext.reordered_opaque + * @param dts The dts field of the decoded AVPacket + * @return One of the input values. May be AV_NOPTS_VALUE. + */ +int64_t guess_correct_pts(PtsCorrectionContext *ctx, int64_t pts, int64_t dts); + #endif /* FFMPEG_CMDUTILS_H */ @@ -207,10 +207,7 @@ typedef struct VideoState { char filename[1024]; int width, height, xleft, ytop; - int64_t faulty_pts; - int64_t faulty_dts; - int64_t last_dts_for_fault_detection; - int64_t last_pts_for_fault_detection; + PtsCorrectionContext pts_ctx; #if CONFIG_AVFILTER AVFilterContext *out_video_filter; ///<the last filter in the video chain @@ -1286,7 +1283,7 @@ retry: 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", - get_master_clock(is), av_diff, FFMAX(is->skip_frames-1, 0), aqsize / 1024, vqsize / 1024, sqsize, is->faulty_dts, is->faulty_pts); + get_master_clock(is), av_diff, FFMAX(is->skip_frames-1, 0), aqsize / 1024, vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts); fflush(stdout); last_time = cur_time; } @@ -1565,8 +1562,7 @@ static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacke is->video_current_pos= -1; SDL_UnlockMutex(is->pictq_mutex); - is->last_dts_for_fault_detection= - is->last_pts_for_fault_detection= INT64_MIN; + init_pts_correction(&is->pts_ctx); is->frame_last_pts= AV_NOPTS_VALUE; is->frame_last_delay = 0; is->frame_timer = (double)av_gettime() / 1000000.0; @@ -1583,26 +1579,19 @@ static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacke pkt); if (got_picture) { - if(pkt->dts != AV_NOPTS_VALUE){ - is->faulty_dts += pkt->dts <= is->last_dts_for_fault_detection; - is->last_dts_for_fault_detection= pkt->dts; + if (decoder_reorder_pts == -1) { + *pts = guess_correct_pts(&is->pts_ctx, frame->reordered_opaque, pkt->dts); + } else if (decoder_reorder_pts) { + *pts = frame->reordered_opaque; + } else { + *pts = pkt->dts; } - if(frame->reordered_opaque != AV_NOPTS_VALUE){ - is->faulty_pts += frame->reordered_opaque <= is->last_pts_for_fault_detection; - is->last_pts_for_fault_detection= frame->reordered_opaque; + + if (*pts == AV_NOPTS_VALUE) { + *pts = 0; } } - if( ( decoder_reorder_pts==1 - || (decoder_reorder_pts && is->faulty_pts<is->faulty_dts) - || pkt->dts == AV_NOPTS_VALUE) - && frame->reordered_opaque != AV_NOPTS_VALUE) - *pts= frame->reordered_opaque; - else if(pkt->dts != AV_NOPTS_VALUE) - *pts= pkt->dts; - else - *pts= 0; - // if (len1 < 0) // break; if (got_picture){ |