diff -r 000000000000 -r 6474c204b198 gfx/layers/GrallocImages.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/layers/GrallocImages.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,109 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GRALLOCIMAGES_H
+#define GRALLOCIMAGES_H
+
+#ifdef MOZ_WIDGET_GONK
+
+#include "ImageLayers.h"
+#include "ImageContainer.h"
+#include "mozilla/gfx/Point.h"
+#include "mozilla/layers/AtomicRefCountedWithFinalize.h"
+#include "mozilla/layers/FenceUtils.h"
+#include "mozilla/layers/LayersSurfaces.h"
+
+#include <ui/GraphicBuffer.h>
+
+namespace mozilla {
+namespace layers {
+
+class GrallocTextureClientOGL;
+
+/**
+ * The YUV format supported by Android HAL
+ *
+ * 4:2:0 - CbCr width and height is half that of Y.
+ *
+ * This format assumes
+ * - an even width
+ * - an even height
+ * - a horizontal stride multiple of 16 pixels
+ * - a vertical stride equal to the height
+ *
+ * y_size = stride * height
+ * c_size = ALIGN(stride/2, 16) * height/2
+ * size = y_size + c_size * 2
+ * cr_offset = y_size
+ * cb_offset = y_size + c_size
+ *
+ * The Image that is rendered is the picture region defined by
+ * mPicX, mPicY and mPicSize. The size of the rendered image is
+ * mPicSize, not mYSize or mCbCrSize.
+ */
+class GrallocImage : public PlanarYCbCrImage
+                   , public ISharedImage
+{
+  typedef PlanarYCbCrData Data;
+  static uint32_t sColorIdMap[];
+public:
+  struct GrallocData {
+    nsRefPtr<TextureClient> mGraphicBuffer;
+    gfx::IntSize mPicSize;
+  };
+
+  GrallocImage();
+
+  virtual ~GrallocImage();
+
+  /**
+   * This makes a copy of the data buffers, in order to support functioning
+   * in all different layer managers.
+   */
+  virtual void SetData(const Data& aData);
+
+  /**
+   *  Share the SurfaceDescriptor without making the copy, in order
+   *  to support functioning in all different layer managers.
+   */
+  virtual void SetData(const GrallocData& aData);
+
+  // From [android 4.0.4]/hardware/msm7k/libgralloc-qsd8k/gralloc_priv.h
+  enum {
+    /* OEM specific HAL formats */
+    HAL_PIXEL_FORMAT_YCbCr_422_P            = 0x102,
+    HAL_PIXEL_FORMAT_YCbCr_420_P            = 0x103,
+    HAL_PIXEL_FORMAT_YCbCr_420_SP           = 0x109,
+    HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO    = 0x10A,
+    HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED     = 0x7FA30C03,
+    HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS     = 0x7FA30C04,
+  };
+
+  virtual TemporaryRef<gfx::SourceSurface> GetAsSourceSurface() MOZ_OVERRIDE;
+
+  android::sp<android::GraphicBuffer> GetGraphicBuffer() const;
+
+  void* GetNativeBuffer();
+
+  virtual bool IsValid() { return !!mTextureClient; }
+
+  virtual ISharedImage* AsSharedImage() MOZ_OVERRIDE { return this; }
+
+  virtual TextureClient* GetTextureClient(CompositableClient* aClient) MOZ_OVERRIDE;
+
+  virtual uint8_t* GetBuffer()
+  {
+    return static_cast<uint8_t*>(GetNativeBuffer());
+  }
+
+private:
+  RefPtr<GrallocTextureClientOGL> mTextureClient;
+};
+
+} // namespace layers
+} // namespace mozilla
+#endif
+
+#endif /* GRALLOCIMAGES_H */