diff options
Diffstat (limited to 'fftools/ffmpeg.c')
-rw-r--r-- | fftools/ffmpeg.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c index 4ce31d8440..6cd92a71c1 100644 --- a/fftools/ffmpeg.c +++ b/fftools/ffmpeg.c @@ -3628,85 +3628,6 @@ static void reset_eagain(void) output_streams[i]->unavailable = 0; } -// set duration to max(tmp, duration) in a proper time base and return duration's time_base -static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base, - AVRational time_base) -{ - int ret; - - if (!*duration) { - *duration = tmp; - return tmp_time_base; - } - - ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base); - if (ret < 0) { - *duration = tmp; - return tmp_time_base; - } - - return time_base; -} - -static int seek_to_start(InputFile *ifile, AVFormatContext *is) -{ - InputStream *ist; - AVCodecContext *avctx; - int i, ret, has_audio = 0; - int64_t duration = 0; - - ret = avformat_seek_file(is, -1, INT64_MIN, is->start_time, is->start_time, 0); - if (ret < 0) - return ret; - - for (i = 0; i < ifile->nb_streams; i++) { - ist = input_streams[ifile->ist_index + i]; - avctx = ist->dec_ctx; - - /* duration is the length of the last frame in a stream - * when audio stream is present we don't care about - * last video frame length because it's not defined exactly */ - if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) - has_audio = 1; - } - - for (i = 0; i < ifile->nb_streams; i++) { - ist = input_streams[ifile->ist_index + i]; - avctx = ist->dec_ctx; - - if (has_audio) { - if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) { - AVRational sample_rate = {1, avctx->sample_rate}; - - duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base); - } else { - continue; - } - } else { - if (ist->framerate.num) { - duration = av_rescale_q(1, av_inv_q(ist->framerate), ist->st->time_base); - } else if (ist->st->avg_frame_rate.num) { - duration = av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate), ist->st->time_base); - } else { - duration = 1; - } - } - if (!ifile->duration) - ifile->time_base = ist->st->time_base; - /* the total duration of the stream, max_pts - min_pts is - * the duration of the stream without the last frame */ - if (ist->max_pts > ist->min_pts && ist->max_pts - (uint64_t)ist->min_pts < INT64_MAX - duration) - duration += ist->max_pts - ist->min_pts; - ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base, - ifile->time_base); - } - - if (ifile->loop > 0) - ifile->loop--; - - return ret; -} - /* * Return * - 0 -- one packet was read and processed |