Implements RGB to YV12 conversion in YASM.

media/base/simd/convert_rgb_to_yuv.h

+// 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.
+
+#ifndef MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_H_
+#define MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_H_
+
+#include "base/basictypes.h"
+#include "media/base/yuv_convert.h"
+
+namespace media {
+
+// Converts an ARGB image to a YV12 image. This function calls ASM functions
+// implemented in "convert_rgb_to_yuv_ssse3.asm" to convert the specified ARGB
+// image to a YV12 image.
+void ConvertRGB32ToYUV_SSSE3(const uint8* rgbframe,
+                             uint8* yplane,
+                             uint8* uplane,
+                             uint8* vplane,
+                             int width,
+                             int height,
+                             int rgbstride,
+                             int ystride,
+                             int uvstride);
+
+// Converts an RGB image to a YV12 image. This function is almost same as
+// ConvertRGB32ToYUV_SSSE3 except its first argument is a pointer to RGB pixels.
+void ConvertRGB24ToYUV_SSSE3(const uint8* rgbframe,
+                             uint8* yplane,
+                             uint8* uplane,
+                             uint8* vplane,
+                             int width,
+                             int height,
+                             int rgbstride,
+                             int ystride,
+                             int uvstride);
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_H_