Implements RGB to YV12 conversion in YASM.

media/base/simd/convert_row.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_ROW_H_
+#define MEDIA_BASE_SIMD_CONVERT_ROW_H_
+
+namespace media {
+namespace simd {
+
+// The header file for ASM functions that convert a row of pixels with SIMD
+// instructions so we can call them from C++ code. These functions are
+// implemented in "convert_row.asm".
+
+// Convert a row of 24-bit RGB pixels to YV12 pixels.
+void ConvertRGBtoYUVRow(const uint8* rgba,
+                        uint8* y,
+                        uint8* u,
+                        uint8* v,
+                        int width);
+
+// Convert a row of 32-bit RGB pixels to YV12 pixels.
+void ConvertRGBAtoYUVRow(const uint8* rgba,
+                         uint8* y,
+                         uint8* u,
+                         uint8* v,
+                         int width);
+
+// Convert a row of YV12 pixels to 24-bit RGB pixels.
+void ConvertYUVtoRGBRow(const uint8* y,
+                        const uint8* u,
+                        const uint8* v,
+                        uint8* rgba,
+                        int width);
+
+// Convert a row of YV12 pixels to 32-bit RGB pixels.
+void ConvertYUVtoRGBARow(const uint8* y,
+                         const uint8* u,
+                         const uint8* v,
+                         uint8* rgba,
+                         int width);
+
+}  // namespace simd
+}  // namespace media
+
+#endif  // MEDIA_BASE_SIMD_CONVERT_ROW_H_