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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_BASE_H
#define ANDROID_LAYER_BASE_H
#include <stdint.h>
#include <sys/types.h>
#include <private/ui/LayerState.h>
#include <ui/Region.h>
#include <pixelflinger/pixelflinger.h>
#include "Transform.h"
namespace android {
// ---------------------------------------------------------------------------
class SurfaceFlinger;
class DisplayHardware;
class GraphicPlane;
class Client;
// ---------------------------------------------------------------------------
class LayerBase
{
// poor man's dynamic_cast below
template<typename T>
struct getTypeInfoOfAnyType {
static uint32_t get() { return T::typeInfo; }
};
template<typename T>
struct getTypeInfoOfAnyType<T*> {
static uint32_t get() { return getTypeInfoOfAnyType<T>::get(); }
};
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; }
template<typename T>
static T dynamicCast(LayerBase* base) {
uint32_t mostDerivedInfo = base->getTypeInfo();
uint32_t castToInfo = getTypeInfoOfAnyType<T>::get();
if ((mostDerivedInfo & castToInfo) == castToInfo)
return static_cast<T>(base);
return 0;
}
static Vector<GLuint> deletedTextures;
LayerBase(SurfaceFlinger* flinger, DisplayID display);
virtual ~LayerBase();
DisplayID dpy;
mutable bool invalidate;
Region visibleRegionScreen;
Region transparentRegionScreen;
Region coveredRegionScreen;
struct State {
uint32_t w;
uint32_t h;
uint32_t z;
uint8_t alpha;
uint8_t flags;
uint8_t sequence; // changes when visible regions can change
uint8_t reserved;
uint32_t tint;
Transform transform;
Region transparentRegion;
};
// modify current state
bool setPosition(int32_t x, int32_t y);
bool setLayer(uint32_t z);
bool setSize(uint32_t w, uint32_t h);
bool setAlpha(uint8_t alpha);
bool setMatrix(const layer_state_t::matrix22_t& matrix);
bool setTransparentRegionHint(const Region& opaque);
bool setFlags(uint8_t flags, uint8_t mask);
void commitTransaction(bool skipSize);
bool requestTransaction();
uint32_t getTransactionFlags(uint32_t flags);
uint32_t setTransactionFlags(uint32_t flags);
void validateVisibility(const Transform& globalTransform);
Rect visibleBounds() const;
void drawRegion(const Region& reg) const;
virtual void draw(const Region& clip) const;
virtual void onDraw(const Region& clip) const = 0;
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 void setVisibleRegion(const Region& visibleRegion);
virtual void setCoveredRegion(const Region& coveredRegion);
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 false; }
virtual bool isSecure() const { return false; }
enum { // flags for doTransaction()
eVisibleRegion = 0x00000002,
eRestartTransaction = 0x00000008
};
inline const State& drawingState() const { return mDrawingState; }
inline const State& currentState() const { return mCurrentState; }
inline State& currentState() { return mCurrentState; }
static int compareCurrentStateZ(LayerBase*const* layerA, LayerBase*const* layerB) {
return layerA[0]->currentState().z - layerB[0]->currentState().z;
}
int32_t getOrientation() const { return mOrientation; }
bool transformed() const { return mTransformed; }
int tx() const { return mLeft; }
int ty() const { return mTop; }
protected:
const GraphicPlane& graphicPlane(int dpy) const;
GraphicPlane& graphicPlane(int dpy);
GLuint createTexture() const;
void drawWithOpenGL(const Region& clip,
GLint textureName, const GGLSurface& surface) const;
void clearWithOpenGL(const Region& clip) const;
void loadTexture(const Region& dirty,
GLint textureName, const GGLSurface& t,
GLuint& textureWidth, GLuint& textureHeight) const;
bool canUseCopybit() const;
SurfaceFlinger* mFlinger;
uint32_t mFlags;
// cached during validateVisibility()
bool mTransformed;
int32_t mOrientation;
GLfixed mVertices[4][2];
Rect mTransformedBounds;
bool mCanUseCopyBit;
int mLeft;
int mTop;
// these are protected by an external lock
State mCurrentState;
State mDrawingState;
volatile int32_t mTransactionFlags;
// don't change, don't need a lock
bool mPremultipliedAlpha;
// only read
const uint32_t mIdentity;
private:
void validateTexture(GLint textureName) const;
static int32_t sIdentity;
};
// ---------------------------------------------------------------------------
class LayerBaseClient : public LayerBase
{
public:
class Surface;
static const uint32_t typeInfo;
static const char* const typeID;
virtual char const* getTypeID() const { return typeID; }
virtual uint32_t getTypeInfo() const { return typeInfo; }
LayerBaseClient(SurfaceFlinger* flinger, DisplayID display,
Client* client, int32_t i);
virtual ~LayerBaseClient();
Client* const client;
layer_cblk_t* const lcblk;
inline int32_t clientIndex() const { return mIndex; }
int32_t serverIndex() const;
virtual sp<Surface> getSurface() const;
uint32_t getIdentity() const { return mIdentity; }
class Surface : public BnSurface
{
public:
Surface(SurfaceID id, int identity) {
mParams.token = id;
mParams.identity = identity;
mParams.type = 0;
}
Surface(SurfaceID id,
const sp<IMemoryHeap>& heap0,
const sp<IMemoryHeap>& heap1,
int memory_type, int identity)
{
mParams.token = id;
mParams.identity = identity;
mParams.type = memory_type;
mParams.heap[0] = heap0;
mParams.heap[1] = heap1;
}
virtual ~Surface() {
// TODO: We now have a point here were we can clean-up the
// client's mess.
// This is also where surface id should be recycled.
//LOGD("Surface %d, heaps={%p, %p}, type=%d destroyed",
// mId, mHeap[0].get(), mHeap[1].get(), mMemoryType);
}
virtual void getSurfaceData(
ISurfaceFlingerClient::surface_data_t* params) const {
*params = mParams;
}
virtual status_t registerBuffers(int w, int h, int hstride, int vstride,
PixelFormat format, const sp<IMemoryHeap>& heap)
{ return INVALID_OPERATION; }
virtual void postBuffer(ssize_t offset) { }
virtual void unregisterBuffers() { };
private:
ISurfaceFlingerClient::surface_data_t mParams;
};
private:
int32_t mIndex;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_LAYER_BASE_H
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