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libavcodec/exr: add support for uint32 channel decoding with pxr24 

Doesn't decode the uint32 layer, but decodes the half part of the file.

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Martin Vignali 2016-11-17 21:24:42 +01:00 committed by Andreas Cadhalpun
parent 8c8f543b81
commit 5099c541bb
1 changed files with 16 additions and 0 deletions
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16
libavcodec/exr.c
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@ -882,6 +882,22 @@ static int pxr24_uncompress(EXRContext *s, const uint8_t *src,
bytestream_put_le16(&out, pixel);
}
break;
case EXR_UINT:
ptr[0] = in;
ptr[1] = ptr[0] + s->xdelta;
ptr[2] = ptr[1] + s->xdelta;
ptr[3] = ptr[2] + s->xdelta;
in = ptr[3] + s->xdelta;
for (j = 0; j < s->xdelta; ++j) {
uint32_t diff = (*(ptr[0]++) << 24) |
(*(ptr[1]++) << 16) |
(*(ptr[2]++) << 8 ) |
(*(ptr[3]++));
pixel += diff;
bytestream_put_le32(&out, pixel);
}
break;
default:
return AVERROR_INVALIDDATA;
}