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lavfi/atempo: avoid asendcmd assertion failure 

Check for zeros equal to the total samples early, because in
that case we would already be leaving the first few frames out.

Fixes trac ticket #10692
This commit is contained in:
Rajiv Harlalka 2024-03-12 21:01:16 -06:00 committed by Kieran Kunhya
parent 8996945d45
commit 4700925d22
1 changed files with 9 additions and 9 deletions
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18
libavfilter/af_atempo.c
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@ -531,21 +531,21 @@ static int yae_load_frag(ATempoContext *atempo,
dst = frag->data;
start = atempo->position[0] - atempo->size;
zeros = 0;
if (frag->position[0] < start) {
// what we don't have we substitute with zeros:
zeros = FFMIN(start - frag->position[0], (int64_t)nsamples);
av_assert0(zeros != nsamples);
memset(dst, 0, zeros * atempo->stride);
dst += zeros * atempo->stride;
}
// what we don't have we substitute with zeros:
zeros =
frag->position[0] < start ?
FFMIN(start - frag->position[0], (int64_t)nsamples) : 0;
if (zeros == nsamples) {
return 0;
}
if (frag->position[0] < start) {
memset(dst, 0, zeros * atempo->stride);
dst += zeros * atempo->stride;
}
// get the remaining data from the ring buffer:
na = (atempo->head < atempo->tail ?
atempo->tail - atempo->head :