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lavu/tx: do not steal lookup tables of subcontexts in the iMDCT 

As it happens, some still need their contexts.
This commit is contained in:
Lynne 2022-09-22 08:25:52 +02:00
parent 686096739b
commit 7e7baf8ab8
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GPG Key ID: A2FEA5F03F034464
1 changed files with 7 additions and 8 deletions
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15
libavutil/tx_template.c
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@ -965,15 +965,14 @@ static av_cold int TX_NAME(ff_tx_mdct_init)(AVTXContext *s,
return ret;
}
/* If we need to preshuffle just steal the map from the subcontext */
if (s->sub[0].flags & FF_TX_PRESHUFFLE) {
s->map = s->sub[0].map;
s->sub[0].map = NULL;
} else {
s->map = av_malloc((len >> 1)*sizeof(*s->map));
if (!s->map)
return AVERROR(ENOMEM);
s->map = av_malloc((len >> 1)*sizeof(*s->map));
if (!s->map)
return AVERROR(ENOMEM);
/* If we need to preshuffle copy the map from the subcontext */
if (s->sub[0].flags & FF_TX_PRESHUFFLE) {
memcpy(s->map, s->sub->map, (len >> 1)*sizeof(*s->map));
} else {
for (int i = 0; i < len >> 1; i++)
s->map[i] = i;
}