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Code Issues Releases Activity

avcodec/dnxhddec: ask for samples with alpha

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This commit is contained in:
Paul B Mahol 2018-09-06 13:39:22 +02:00
parent 7bb90a9449
commit 237bbf6678
1 changed files with 6 additions and 0 deletions
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6
libavcodec/dnxhddec.c
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@ -67,6 +67,8 @@ typedef struct DNXHDContext {
const CIDEntry *cid_table;
int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
int is_444;
int alpha;
int lla;
int mbaff;
int act;
int (*decode_dct_block)(const struct DNXHDContext *ctx,
@ -205,6 +207,10 @@ static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
ctx->cur_field = 0;
}
ctx->mbaff = (buf[0x6] >> 5) & 1;
ctx->alpha = buf[0x7] & 1;
ctx->lla = (buf[0x7] >> 1) & 1;
if (ctx->alpha)
avpriv_request_sample(ctx->avctx, "alpha");
ctx->height = AV_RB16(buf + 0x18);
ctx->width = AV_RB16(buf + 0x1a);