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71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GRALLOCIMAGES_H
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#define GRALLOCIMAGES_H
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#ifdef MOZ_WIDGET_GONK
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#include "mozilla/layers/LayersSurfaces.h"
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#include "ImageLayers.h"
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#include <ui/GraphicBuffer.h>
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namespace mozilla {
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namespace layers {
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/**
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* The YUV format supported by Android HAL
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*
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* 4:2:0 - CbCr width and height is half that of Y.
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*
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* This format assumes
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* - an even width
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* - an even height
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* - a horizontal stride multiple of 16 pixels
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* - a vertical stride equal to the height
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*
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* y_size = stride * height
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* c_size = ALIGN(stride/2, 16) * height/2
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* size = y_size + c_size * 2
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* cr_offset = y_size
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* cb_offset = y_size + c_size
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*
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* The Image that is rendered is the picture region defined by
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* mPicX, mPicY and mPicSize. The size of the rendered image is
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* mPicSize, not mYSize or mCbCrSize.
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*/
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class GrallocPlanarYCbCrImage : public PlanarYCbCrImage {
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typedef PlanarYCbCrImage::Data Data;
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public:
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GrallocPlanarYCbCrImage();
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virtual ~GrallocPlanarYCbCrImage();
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/**
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* This makes a copy of the data buffers, in order to support functioning
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* in all different layer managers.
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*/
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virtual void SetData(const Data& aData);
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virtual uint32_t GetDataSize() { return 0; }
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virtual bool IsValid() { return mSurfaceDescriptor.type() != SurfaceDescriptor::T__None; }
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SurfaceDescriptor GetSurfaceDescriptor() {
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return mSurfaceDescriptor;
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}
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private:
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SurfaceDescriptor mSurfaceDescriptor;
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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#endif /* GRALLOCIMAGES_H */
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