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Write tiff tag YCbCrPositioning if chroma_sample_location is top-left.

This commit is contained in:
Carl Eugen Hoyos 2012-11-05 04:43:17 +01:00
parent b015cd7eda
commit c673ef1288
1 changed files with 2 additions and 0 deletions
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2
libavcodec/tiffenc.c
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@ -471,6 +471,8 @@ static int encode_frame(AVCodecContext * avctx, AVPacket *pkt,
/** according to CCIR Recommendation 601.1 */
uint32_t refbw[12] = {15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1};
add_entry(s, TIFF_YCBCR_SUBSAMPLING, TIFF_SHORT, 2, s->subsampling);
if (avctx->chroma_sample_location == AVCHROMA_LOC_TOPLEFT)
add_entry1(s, TIFF_YCBCR_POSITIONING, TIFF_SHORT, 2);
add_entry(s, TIFF_REFERENCE_BW, TIFF_RATIONAL, 6, refbw);
}
bytestream_put_le32(&offset, ptr - pkt->data); // write offset to dir