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// Copyright 2012 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 CCVideoLayerImpl_h
#define CCVideoLayerImpl_h
#include "IntSize.h"
#include "base/synchronization/lock.h"
#include "cc/layer_impl.h"
#include "third_party/khronos/GLES2/gl2.h"
#include <public/WebTransformationMatrix.h>
#include <public/WebVideoFrameProvider.h>
namespace WebKit {
class WebVideoFrame;
}
namespace cc {
class LayerTreeHostImpl;
class VideoLayerImpl;
class VideoLayerImpl : public LayerImpl
, public WebKit::WebVideoFrameProvider::Client {
public:
static scoped_ptr<VideoLayerImpl> create(int id, WebKit::WebVideoFrameProvider* provider)
{
return make_scoped_ptr(new VideoLayerImpl(id, provider));
}
virtual ~VideoLayerImpl();
virtual void willDraw(ResourceProvider*) OVERRIDE;
virtual void appendQuads(QuadSink&, AppendQuadsData&) OVERRIDE;
virtual void didDraw(ResourceProvider*) OVERRIDE;
virtual void dumpLayerProperties(std::string*, int indent) const OVERRIDE;
// WebKit::WebVideoFrameProvider::Client implementation.
virtual void stopUsingProvider(); // Callable on any thread.
virtual void didReceiveFrame(); // Callable on impl thread.
virtual void didUpdateMatrix(const float*); // Callable on impl thread.
virtual void didLoseContext() OVERRIDE;
void setNeedsRedraw();
struct FramePlane {
ResourceProvider::ResourceId resourceId;
IntSize size;
GLenum format;
IntSize visibleSize;
FramePlane() : resourceId(0) { }
bool allocateData(ResourceProvider*);
void freeData(ResourceProvider*);
};
private:
VideoLayerImpl(int, WebKit::WebVideoFrameProvider*);
static IntSize computeVisibleSize(const WebKit::WebVideoFrame&, unsigned plane);
virtual const char* layerTypeAsString() const OVERRIDE;
void willDrawInternal(ResourceProvider*);
bool allocatePlaneData(ResourceProvider*);
bool copyPlaneData(ResourceProvider*);
void freePlaneData(ResourceProvider*);
void freeUnusedPlaneData(ResourceProvider*);
// Guards the destruction of m_provider and the frame that it provides
base::Lock m_providerLock;
WebKit::WebVideoFrameProvider* m_provider;
WebKit::WebTransformationMatrix m_streamTextureMatrix;
WebKit::WebVideoFrame* m_frame;
GLenum m_format;
ResourceProvider::ResourceId m_externalTextureResource;
// Each index in this array corresponds to a plane in WebKit::WebVideoFrame.
FramePlane m_framePlanes[WebKit::WebVideoFrame::maxPlanes];
};
} // namespace cc
#endif // CCVideoLayerImpl_h
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