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avcodec/ffv1dec: Set packed_at_lsb for 16bit YUV

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This avoids unneeded computations

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-11-17 23:29:00 +01:00
parent d7a3bb2088
commit d1d18de6ad
1 changed files with 2 additions and 0 deletions

2
libavcodec/ffv1dec.c
View File

@ -637,12 +637,14 @@ static int read_header(FFV1Context *f)
case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break; case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
} }
} else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){ } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
f->packed_at_lsb = 1;
switch(16 * f->chroma_h_shift + f->chroma_v_shift) { switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break; case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break; case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break; case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
} }
} else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){ } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
f->packed_at_lsb = 1;
switch(16 * f->chroma_h_shift + f->chroma_v_shift) { switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break; case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break; case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;