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/* -*- 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 "mozilla/layers/LayersSurfaces.h"
#include "ImageLayers.h"
#include <ui/GraphicBuffer.h>
namespace mozilla {
namespace layers {
/**
* 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 GrallocPlanarYCbCrImage : public PlanarYCbCrImage {
typedef PlanarYCbCrImage::Data Data;
public:
GrallocPlanarYCbCrImage();
virtual ~GrallocPlanarYCbCrImage();
/**
* This makes a copy of the data buffers, in order to support functioning
* in all different layer managers.
*/
virtual void SetData(const Data& aData);
virtual uint32_t GetDataSize() { return 0; }
virtual bool IsValid() { return mSurfaceDescriptor.type() != SurfaceDescriptor::T__None; }
SurfaceDescriptor GetSurfaceDescriptor() {
return mSurfaceDescriptor;
}
private:
SurfaceDescriptor mSurfaceDescriptor;
};
} // namespace layers
} // namespace mozilla
#endif
#endif /* GRALLOCIMAGES_H */
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