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Code Issues Releases Activity

threads: fix old frames returned after avcodec_flush_buffers()

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Calling avcodec_flush_buffers() and then avcodec_decode_video2() with
a 0-sized packet (to get remaining buffered frames) could incorrectly
return an old frame from before the avcodec_flush_buffers() call. Add
a loop in ff_thread_flush() to zero the got_frame field of each thread
to ensure the old frames will not be returned.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Uoti Urpala 2012-03-16 05:42:26 +02:00 committed by Ronald S. Bultje
parent 7b60799aa8
commit 05b9a89ed7
1 changed files with 3 additions and 0 deletions
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3
libavcodec/pthread.c
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@ -884,6 +884,9 @@ void ff_thread_flush(AVCodecContext *avctx)
fctx->next_decoding = fctx->next_finished = 0;
fctx->delaying = 1;
fctx->prev_thread = NULL;
// Make sure decode flush calls with size=0 won't return old frames
for (int i = 0; i < avctx->thread_count; i++)
fctx->threads[i].got_frame = 0;
}
static int *allocate_progress(PerThreadContext *p)