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avcodec/dvenc: Check for availability of interlaced dct cmp func

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Not every type of comparison function implements every function.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-05-12 23:26:20 +02:00
parent c46711d44f
commit 422711d1a5
1 changed files with 13 additions and 9 deletions
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22
libavcodec/dvenc.c
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@ -70,7 +70,6 @@ static av_cold int dvvideo_encode_init(AVCodecContext *avctx)
{
DVEncContext *s = avctx->priv_data;
FDCTDSPContext fdsp;
MECmpContext mecc;
PixblockDSPContext pdsp;
int ret;
@ -95,19 +94,24 @@ static av_cold int dvvideo_encode_init(AVCodecContext *avctx)
ff_dv_init_dynamic_tables(s->work_chunks, s->sys);
if (avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT) {
MECmpContext mecc;
memset(&mecc,0, sizeof(mecc));
ff_me_cmp_init(&mecc, avctx);
ret = ff_set_cmp(&mecc, mecc.ildct_cmp, avctx->ildct_cmp);
if (ret < 0)
return ret;
if (!mecc.ildct_cmp[5])
return AVERROR(EINVAL);
s->ildct_cmp = mecc.ildct_cmp[5];
}
memset(&fdsp,0, sizeof(fdsp));
memset(&mecc,0, sizeof(mecc));
memset(&pdsp,0, sizeof(pdsp));
ff_fdctdsp_init(&fdsp, avctx);
ff_me_cmp_init(&mecc, avctx);
ff_pixblockdsp_init(&pdsp, avctx);
ret = ff_set_cmp(&mecc, mecc.ildct_cmp, avctx->ildct_cmp);
if (ret < 0)
return AVERROR(EINVAL);
s->get_pixels = pdsp.get_pixels;
s->ildct_cmp = mecc.ildct_cmp[5];
s->fdct[0] = fdsp.fdct;
s->fdct[1] = fdsp.fdct248;