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Remove a=0 special case in C and use table all the time, which will zero the rgb.

Browse Source 
BUG=195
TESTED=out\release\libyuv_unittest --gtest_filter=*ten*
Review URL: https://webrtc-codereview.appspot.com/1158004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@589 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2013-03-05 06:05:05 +00:00
parent 51d3e236cb
commit 9246ed0420
3 changed files with 15 additions and 17 deletions
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2
README.chromium
View File

@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 588
Version: 589
License: BSD
License File: LICENSE

2
include/libyuv/version.h
View File

@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 588
#define LIBYUV_VERSION 589
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

28
source/row_common.cc
View File

@ -1569,21 +1569,19 @@ void ARGBUnattenuateRow_C(const uint8* src_argb, uint8* dst_argb, int width) {
uint32 g = src_argb[1];
uint32 r = src_argb[2];
const uint32 a = src_argb[3];
if (a) {
const uint32 ia = fixed_invtbl8[a] & 0xffff; // 8.16 fixed point
b = (b * ia) >> 8;
g = (g * ia) >> 8;
r = (r * ia) >> 8;
// Clamping should not be necessary but is free in assembly.
if (b > 255) {
b = 255;
}
if (g > 255) {
g = 255;
}
if (r > 255) {
r = 255;
}
const uint32 ia = fixed_invtbl8[a] & 0xffff; // 8.16 fixed point
b = (b * ia) >> 8;
g = (g * ia) >> 8;
r = (r * ia) >> 8;
// Clamping should not be necessary but is free in assembly.
if (b > 255) {
b = 255;
}
if (g > 255) {
g = 255;
}
if (r > 255) {
r = 255;
}
dst_argb[0] = b;
dst_argb[1] = g;