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Save and restore last 16 bytes of filtered rows when used for ARGBInterpolate.

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BUG=50
TEST=none
Review URL: https://webrtc-codereview.appspot.com/673012

git-svn-id: http://libyuv.googlecode.com/svn/trunk@303 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2012-07-13 01:58:53 +00:00
parent 05b5cf9610
commit b50e0572f2
4 changed files with 7 additions and 2 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv Name: libyuv
URL: http://code.google.com/p/libyuv/ URL: http://code.google.com/p/libyuv/
Version: 302 Version: 303
License: BSD License: BSD
License File: LICENSE License File: LICENSE

1
include/libyuv/planar_functions.h
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@ -217,6 +217,7 @@ int ARGBShade(const uint8* src_argb, int src_stride_argb,
// 'interpolation' is specified as 8 bit fraction where 0 means 100% src_argb0 // 'interpolation' is specified as 8 bit fraction where 0 means 100% src_argb0
// and 255 means 1% src_argb0 and 99% src_argb1. // and 255 means 1% src_argb0 and 99% src_argb1.
// Internally uses ARGBScale bilinear filtering. // Internally uses ARGBScale bilinear filtering.
// Caveat: This function will write up to 16 bytes beyond the end of dst_argb.
int ARGBInterpolate(const uint8* src_argb0, int src_stride_argb0, int ARGBInterpolate(const uint8* src_argb0, int src_stride_argb0,
const uint8* src_argb1, int src_stride_argb1, const uint8* src_argb1, int src_stride_argb1,
uint8* dst_argb, int dst_stride_argb, uint8* dst_argb, int dst_stride_argb,

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT #ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_ #define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 302 #define LIBYUV_VERSION 303
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT #endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

4
source/planar_functions.cc
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@ -1147,9 +1147,13 @@ int ARGBInterpolate(const uint8* src_argb0, int src_stride_argb0,
ScaleARGBFilterRows = ScaleARGBFilterRows_SSSE3; ScaleARGBFilterRows = ScaleARGBFilterRows_SSSE3;
} }
#endif #endif
uint8 last16[16];
for (int y = 0; y < height; ++y) { for (int y = 0; y < height; ++y) {
// Filter extrudes edge for its scaling purpose.
memcpy(last16, dst_argb + width * 4, 16); // Save last 16 beyond end.
ScaleARGBFilterRows(dst_argb, src_argb0, src_argb1 - src_argb0, ScaleARGBFilterRows(dst_argb, src_argb0, src_argb1 - src_argb0,
width, interpolation); width, interpolation);
memcpy(dst_argb + width * 4, last16, 16); // Restore last 16 beyond end.
src_argb0 += src_stride_argb0; src_argb0 += src_stride_argb0;
src_argb1 += src_stride_argb1; src_argb1 += src_stride_argb1;
dst_argb += dst_stride_argb; dst_argb += dst_stride_argb;