s->ec = (s->version >= 3);
}
+ // CRC requires version 3+
+ if (s->ec)
+ s->version = FFMAX(s->version, 3);
+
if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
return AVERROR_INVALIDDATA;
case AV_PIX_FMT_YUVA420P:
s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
s->colorspace = 0;
- s->transparency = desc->nb_components == 4 || desc->nb_components == 2;
+ s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
s->bits_per_raw_sample = 8;
else if (!s->bits_per_raw_sample)
s->bits_per_raw_sample = 16;
else if (!s->bits_per_raw_sample)
s->bits_per_raw_sample = avctx->bits_per_raw_sample;
- s->transparency = desc->nb_components == 4 || desc->nb_components == 2;
+ s->transparency = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
s->colorspace = 1;
s->chroma_planes = 1;
if (s->bits_per_raw_sample >= 16) {