Implements RGB to YV12 conversion in YASM.

media/base/simd/convert_rgb_to_yuv.cc

Index: media/base/simd/convert_rgb_to_yuv.cc
===================================================================
--- media/base/simd/convert_rgb_to_yuv.cc	(revision 0)
+++ media/base/simd/convert_rgb_to_yuv.cc	(revision 0)
@@ -0,0 +1,97 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/base/simd/convert_rgb_to_yuv.h"
+
+#include "build/build_config.h"
+#include "media/base/cpu_features.h"
+#include "media/base/simd/convert_rgb_to_yuv_ssse3.h"
+
+namespace media {
+namespace simd {
+
+void ConvertRGB32toYUV(const uint8* rgbframe,
+                       uint8* yplane,
+                       uint8* uplane,
+                       uint8* vplane,
+                       int width,
+                       int height,
+                       int rgbstride,
+                       int ystride,
+                       int uvstride) {
+#if ENABLE_SUBSAMPLING
+  for (; height >= 2; height -= 2) {
+    ConvertARGBtoYUVEven(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertARGBtoYUVOdd(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+#else
+  for (; height >= 2; height -= 2) {
+    ConvertARGBtoYUVRow(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertARGBtoYUVRow(rgbframe, yplane, NULL, NULL, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+#endif
+
+  if (height)
+    ConvertARGBtoYUVRow(rgbframe, yplane, uplane, vplane, width);
+}
+
+void ConvertRGB24toYUV(const uint8* rgbframe,
+                       uint8* yplane,
+                       uint8* uplane,
+                       uint8* vplane,
+                       int width,
+                       int height,
+                       int rgbstride,
+                       int ystride,
+                       int uvstride) {
+#if ENABLE_SUBSAMPLING
+  for (; height >= 2; height -= 2) {
+    ConvertRGBtoYUVEven(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertRGBtoYUVOdd(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+#else
+  for (; height >= 2; height -= 2) {
+    ConvertRGBtoYUVRow(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertRGBtoYUVRow(rgbframe, yplane, NULL, NULL, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+#endif
+
+  if (height)
+    ConvertRGBtoYUVRow(rgbframe, yplane, uplane, vplane, width);
+}
+
+}  // namespace simd
+}  // namespace media
Property changes on: media\base\simd\convert_rgb_to_yuv.cc
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Added: svn:eol-style
   + LF