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fftools/sync_queue: use timebase from input frames/packets 

They are always properly set now. Avoid a separate timebase-setting
call, which duplicates the knowledge of the timebase being used.
This commit is contained in:
Anton Khirnov 2023-03-21 12:36:03 +01:00
parent 87e9f5ad3c
commit 090950f832
4 changed files with 22 additions and 29 deletions
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3
fftools/ffmpeg.c
View File

@ -3194,9 +3194,6 @@ static int init_output_stream_encode(OutputStream *ost, AVFrame *frame)
if (ost->bitexact)
enc_ctx->flags |= AV_CODEC_FLAG_BITEXACT;
if (ost->sq_idx_encode >= 0)
sq_set_tb(of->sq_encode, ost->sq_idx_encode, enc_ctx->time_base);
ost->mux_timebase = enc_ctx->time_base;
return 0;

3
fftools/ffmpeg_mux.c
View File

@ -586,9 +586,6 @@ int of_stream_init(OutputFile *of, OutputStream *ost)
MuxStream *ms = ms_from_ost(ost);
int ret;
if (ost->sq_idx_mux >= 0)
sq_set_tb(mux->sq_mux, ost->sq_idx_mux, ost->mux_timebase);
/* initialize bitstream filters for the output stream
* needs to be done here, because the codec id for streamcopy is not
* known until now */

39
fftools/sync_queue.c
View File

@ -84,6 +84,26 @@ static int frame_null(const SyncQueue *sq, SyncQueueFrame frame)
return (sq->type == SYNC_QUEUE_PACKETS) ? (frame.p == NULL) : (frame.f == NULL);
}
static void tb_update(const SyncQueue *sq, SyncQueueStream *st,
const SyncQueueFrame frame)
{
AVRational tb = (sq->type == SYNC_QUEUE_PACKETS) ?
frame.p->time_base : frame.f->time_base;
av_assert0(tb.num > 0 && tb.den > 0);
if (tb.num == st->tb.num && tb.den == st->tb.den)
return;
// timebase should not change after the first frame
av_assert0(!av_fifo_can_read(st->fifo));
if (st->head_ts != AV_NOPTS_VALUE)
st->head_ts = av_rescale_q(st->head_ts, st->tb, tb);
st->tb = tb;
}
static void finish_stream(SyncQueue *sq, unsigned int stream_idx)
{
SyncQueueStream *st = &sq->streams[stream_idx];
@ -241,8 +261,6 @@ int sq_send(SyncQueue *sq, unsigned int stream_idx, SyncQueueFrame frame)
av_assert0(stream_idx < sq->nb_streams);
st = &sq->streams[stream_idx];
av_assert0(st->tb.num > 0 && st->tb.den > 0);
if (frame_null(sq, frame)) {
finish_stream(sq, stream_idx);
return 0;
@ -250,6 +268,8 @@ int sq_send(SyncQueue *sq, unsigned int stream_idx, SyncQueueFrame frame)
if (st->finished)
return AVERROR_EOF;
tb_update(sq, st, frame);
ret = objpool_get(sq->pool, (void**)&dst);
if (ret < 0)
return ret;
@ -375,21 +395,6 @@ int sq_add_stream(SyncQueue *sq, int limiting)
return sq->nb_streams++;
}
void sq_set_tb(SyncQueue *sq, unsigned int stream_idx, AVRational tb)
{
SyncQueueStream *st;
av_assert0(stream_idx < sq->nb_streams);
st = &sq->streams[stream_idx];
av_assert0(!av_fifo_can_read(st->fifo));
if (st->head_ts != AV_NOPTS_VALUE)
st->head_ts = av_rescale_q(st->head_ts, st->tb, tb);
st->tb = tb;
}
void sq_limit_frames(SyncQueue *sq, unsigned int stream_idx, uint64_t frames)
{
SyncQueueStream *st;

6
fftools/sync_queue.h
View File

@ -59,12 +59,6 @@ void sq_free(SyncQueue **sq);
*/
int sq_add_stream(SyncQueue *sq, int limiting);
/**
* Set the timebase for the stream with index stream_idx. Should be called
* before sending any frames for this stream.
*/
void sq_set_tb(SyncQueue *sq, unsigned int stream_idx, AVRational tb);
/**
* Limit the number of output frames for stream with index stream_idx
* to max_frames.