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avcodec/prosumer: Simplify bit juggling of the c variable in decompress()

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Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 66425add270cd262a22c0fdaf6aad09a0db6f8c0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-10-31 10:19:43 +01:00
parent fd05e20650
commit 2f04b78b95
1 changed files with 2 additions and 4 deletions
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6
libavcodec/prosumer.c
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@ -69,15 +69,13 @@ static int decompress(GetByteContext *gb, int size, PutByteContext *pb, const ui
} }
c = b >> 16; c = b >> 16;
if (c & 0xFF00u) { if (c & 0xFF00u) {
c = (((c >> 8) & 0xFFu) | (c & 0xFF00)) & 0xF00F;
fill = lut[2 * idx + 1]; fill = lut[2 * idx + 1];
if ((c & 0xFF00u) == 0x1000) { if ((c & 0xF000u) == 0x1000) {
bytestream2_put_le16(pb, fill); bytestream2_put_le16(pb, fill);
c &= 0xFFFF00FFu;
} else { } else {
bytestream2_put_le32(pb, fill); bytestream2_put_le32(pb, fill);
c &= 0xFFFF00FFu;
} }
c = (c >> 8) & 0x0Fu;
} }
while (c) { while (c) {
a <<= 4; a <<= 4;