diff -r 000000000000 -r 6474c204b198 gfx/ycbcr/yuv_convert.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/ycbcr/yuv_convert.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,81 @@
+// Copyright (c) 2010 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_YUV_CONVERT_H_
+#define MEDIA_BASE_YUV_CONVERT_H_
+
+#include "chromium_types.h"
+#include "gfxCore.h"
+
+namespace mozilla {
+
+namespace gfx {
+ 
+// Type of YUV surface.
+// The value of these enums matter as they are used to shift vertical indices.
+enum YUVType {
+  YV12 = 0,           // YV12 is half width and half height chroma channels.
+  YV16 = 1,           // YV16 is half width and full height chroma channels.
+  YV24 = 2            // YV24 is full width and full height chroma channels.
+};
+
+// Mirror means flip the image horizontally, as in looking in a mirror.
+// Rotate happens after mirroring.
+enum Rotate {
+  ROTATE_0,           // Rotation off.
+  ROTATE_90,          // Rotate clockwise.
+  ROTATE_180,         // Rotate upside down.
+  ROTATE_270,         // Rotate counter clockwise.
+  MIRROR_ROTATE_0,    // Mirror horizontally.
+  MIRROR_ROTATE_90,   // Mirror then Rotate clockwise.
+  MIRROR_ROTATE_180,  // Mirror vertically.
+  MIRROR_ROTATE_270   // Transpose.
+};
+
+// Filter affects how scaling looks.
+enum ScaleFilter {
+  FILTER_NONE = 0,        // No filter (point sampled).
+  FILTER_BILINEAR_H = 1,  // Bilinear horizontal filter.
+  FILTER_BILINEAR_V = 2,  // Bilinear vertical filter.
+  FILTER_BILINEAR = 3     // Bilinear filter.
+};
+
+NS_GFX_(YUVType) TypeFromSize(int ywidth, int yheight, int cbcrwidth, int cbcrheight);
+
+// Convert a frame of YUV to 32 bit ARGB.
+// Pass in YV16/YV12 depending on source format
+NS_GFX_(void) ConvertYCbCrToRGB32(const uint8* yplane,
+                                  const uint8* uplane,
+                                  const uint8* vplane,
+                                  uint8* rgbframe,
+                                  int pic_x,
+                                  int pic_y,
+                                  int pic_width,
+                                  int pic_height,
+                                  int ystride,
+                                  int uvstride,
+                                  int rgbstride,
+                                  YUVType yuv_type);
+
+// Scale a frame of YUV to 32 bit ARGB.
+// Supports rotation and mirroring.
+NS_GFX_(void) ScaleYCbCrToRGB32(const uint8* yplane,
+                                const uint8* uplane,
+                                const uint8* vplane,
+                                uint8* rgbframe,
+                                int source_width,
+                                int source_height,
+                                int width,
+                                int height,
+                                int ystride,
+                                int uvstride,
+                                int rgbstride,
+                                YUVType yuv_type,
+                                Rotate view_rotate,
+                                ScaleFilter filter);
+
+}  // namespace gfx
+}  // namespace mozilla
+ 
+#endif  // MEDIA_BASE_YUV_CONVERT_H_