Resubmit - Rewrite color space conversions suite using YASM"

media/base/simd/convert_rgb_to_yuv_x86.cc

Index: media/base/simd/convert_rgb_to_yuv_x86.cc
diff --git a/media/base/simd/convert_rgb_to_yuv_x86.cc b/media/base/simd/convert_rgb_to_yuv_x86.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2bd6930381b4a9035e6ab41b7024dbac319ff833
--- /dev/null
+++ b/media/base/simd/convert_rgb_to_yuv_x86.cc
@@ -0,0 +1,101 @@
+// 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 {
+
+void ConvertRGB32ToYUV_SSSE3(const uint8* rgbframe,
+                             uint8* yplane,
+                             uint8* uplane,
+                             uint8* vplane,
+                             int width,
+                             int height,
+                             int rgbstride,
+                             int ystride,
+                             int uvstride) {
+#ifdef ENABLE_SUBSAMPLING
+  for (; height >= 2; height -= 2) {
+    ConvertARGBToYUVEven_SSSE3(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertARGBToYUVOdd_SSSE3(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+
+  if (height)
+    ConvertARGBToYUVEven_SSSE3(rgbframe, yplane, uplane, vplane, width);
+#else
+  for (; height >= 2; height -= 2) {
+    ConvertARGBToYUVRow_SSSE3(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertARGBToYUVRow_SSSE3(rgbframe, yplane, NULL, NULL, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+
+  if (height)
+    ConvertARGBToYUVRow_SSSE3(rgbframe, yplane, uplane, vplane, width);
+#endif
+}
+
+void ConvertRGB24ToYUV_SSSE3(const uint8* rgbframe,
+                             uint8* yplane,
+                             uint8* uplane,
+                             uint8* vplane,
+                             int width,
+                             int height,
+                             int rgbstride,
+                             int ystride,
+                             int uvstride) {
+#ifdef ENABLE_SUBSAMPLING
+  for (; height >= 2; height -= 2) {
+    ConvertRGBToYUVEven_SSSE3(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertRGBToYUVOdd_SSSE3(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+
+  if (height)
+    ConvertRGBToYUVEven_SSSE3(rgbframe, yplane, uplane, vplane, width);
+#else
+  for (; height >= 2; height -= 2) {
+    ConvertRGBToYUVRow_SSSE3(rgbframe, yplane, uplane, vplane, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    ConvertRGBToYUVRow_SSSE3(rgbframe, yplane, NULL, NULL, width);
+    rgbframe += rgbstride;
+    yplane += ystride;
+
+    uplane += uvstride;
+    vplane += uvstride;
+  }
+
+  if (height)
+    ConvertRGBToYUVRow_SSSE3(rgbframe, yplane, uplane, vplane, width);
+#endif
+}
+
+}  // namespace media