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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_LAYER_H
#define ANDROID_LAYER_H
#include <stdint.h>
#include <sys/types.h>
#include <ui/PixelFormat.h>
#include <private/ui/SharedState.h>
#include <private/ui/LayerState.h>
#include <pixelflinger/pixelflinger.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include "LayerBitmap.h"
#include "LayerBase.h"
#include "Transform.h"
namespace android {
// ---------------------------------------------------------------------------
class Client;
class LayerBitmap;
class MemoryDealer;
class FreezeLock;
// ---------------------------------------------------------------------------
const int NUM_BUFFERS = 2;
class Layer : public LayerBaseClient
{
public:
static const uint32_t typeInfo;
static const char* const typeID;
virtual char const* getTypeID() const { return typeID; }
virtual uint32_t getTypeInfo() const { return typeInfo; }
Layer(SurfaceFlinger* flinger, DisplayID display,
Client* c, int32_t i);
virtual ~Layer();
inline PixelFormat pixelFormat() const {
return frontBuffer().getPixelFormat();
}
status_t setBuffers( Client* client,
uint32_t w, uint32_t h,
PixelFormat format, uint32_t flags=0);
virtual void onDraw(const Region& clip) const;
virtual void initStates(uint32_t w, uint32_t h, uint32_t flags);
virtual void setSizeChanged(uint32_t w, uint32_t h);
virtual uint32_t doTransaction(uint32_t transactionFlags);
virtual Point getPhysicalSize() const;
virtual void lockPageFlip(bool& recomputeVisibleRegions);
virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
virtual void finishPageFlip();
virtual bool needsBlending() const { return mNeedsBlending; }
virtual bool isSecure() const { return mSecure; }
virtual sp<Surface> createSurface() const;
const LayerBitmap& getBuffer(int i) const { return mBuffers[i]; }
LayerBitmap& getBuffer(int i) { return mBuffers[i]; }
// only for debugging
const sp<FreezeLock>& getFreezeLock() const { return mFreezeLock; }
private:
inline const LayerBitmap&
frontBuffer() const { return getBuffer(mFrontBufferIndex); }
inline LayerBitmap&
frontBuffer() { return getBuffer(mFrontBufferIndex); }
inline const LayerBitmap&
backBuffer() const { return getBuffer(1-mFrontBufferIndex); }
inline LayerBitmap&
backBuffer() { return getBuffer(1-mFrontBufferIndex); }
void reloadTexture(const Region& dirty);
status_t resize(int32_t index, uint32_t w, uint32_t h, const char* what);
Region post(uint32_t* oldState, bool& recomputeVisibleRegions);
sp<SurfaceBuffer> peekBuffer();
class SurfaceLayer : public LayerBaseClient::Surface
{
public:
SurfaceLayer(SurfaceID id, const sp<Layer>& owner);
private:
virtual sp<SurfaceBuffer> getBuffer();
sp<Layer> getOwner() const {
return static_cast<Layer*>(Surface::getOwner().get());
}
};
friend class SurfaceLayer;
struct Texture {
Texture() : name(-1U), width(0), height(0), image(EGL_NO_IMAGE_KHR),
dirty(true) { }
GLuint name;
GLuint width;
GLuint height;
EGLImageKHR image;
bool dirty;
};
sp<Surface> mSurface;
bool mSecure;
LayerBitmap mBuffers[NUM_BUFFERS];
Texture mTextures[NUM_BUFFERS];
int32_t mFrontBufferIndex;
bool mNeedsBlending;
bool mResizeTransactionDone;
Region mPostedDirtyRegion;
sp<FreezeLock> mFreezeLock;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_LAYER_H
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