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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_SF_SURFACE_COMPOSER_CLIENT_H
#define ANDROID_SF_SURFACE_COMPOSER_CLIENT_H
#include <stdint.h>
#include <sys/types.h>
#include <binder/IBinder.h>
#include <utils/RefBase.h>
#include <utils/Singleton.h>
#include <utils/SortedVector.h>
#include <utils/threads.h>
#include <ui/PixelFormat.h>
#include <ui/Region.h>
#include <surfaceflinger/Surface.h>
namespace android {
// ---------------------------------------------------------------------------
class Region;
class SharedClient;
class ISurfaceComposer;
class DisplayInfo;
class surface_flinger_cblk_t;
// ---------------------------------------------------------------------------
class ComposerService : public Singleton<ComposerService>
{
// these are constants
sp<ISurfaceComposer> mComposerService;
sp<IMemoryHeap> mServerCblkMemory;
surface_flinger_cblk_t volatile* mServerCblk;
ComposerService();
friend class Singleton<ComposerService>;
public:
static sp<ISurfaceComposer> getComposerService();
static surface_flinger_cblk_t const volatile * getControlBlock();
};
// ---------------------------------------------------------------------------
class SurfaceComposerClient : public RefBase
{
public:
SurfaceComposerClient();
virtual ~SurfaceComposerClient();
// Always make sure we could initialize
status_t initCheck() const;
// Return the connection of this client
sp<IBinder> connection() const;
// Forcibly remove connection before all references have gone away.
void dispose();
// ------------------------------------------------------------------------
// surface creation / destruction
//! Create a surface
sp<SurfaceControl> createSurface(
int pid, // pid of the process the surface is for
const String8& name,// name of the surface
DisplayID display, // Display to create this surface on
uint32_t w, // width in pixel
uint32_t h, // height in pixel
PixelFormat format, // pixel-format desired
uint32_t flags = 0 // usage flags
);
sp<SurfaceControl> createSurface(
int pid, // pid of the process the surface is for
DisplayID display, // Display to create this surface on
uint32_t w, // width in pixel
uint32_t h, // height in pixel
PixelFormat format, // pixel-format desired
uint32_t flags = 0 // usage flags
);
// ------------------------------------------------------------------------
// Composer parameters
// All composer parameters must be changed within a transaction
// several surfaces can be updated in one transaction, all changes are
// committed at once when the transaction is closed.
// CloseTransaction() usually requires an IPC with the server.
//! Open a composer transaction
status_t openTransaction();
//! commit the transaction
status_t closeTransaction();
//! Open a composer transaction on all active SurfaceComposerClients.
static void openGlobalTransaction();
//! Close a composer transaction on all active SurfaceComposerClients.
static void closeGlobalTransaction();
//! Freeze the specified display but not transactions.
static status_t freezeDisplay(DisplayID dpy, uint32_t flags = 0);
//! Resume updates on the specified display.
static status_t unfreezeDisplay(DisplayID dpy, uint32_t flags = 0);
//! Set the orientation of the given display
static int setOrientation(DisplayID dpy, int orientation, uint32_t flags);
// Query the number of displays
static ssize_t getNumberOfDisplays();
// Get information about a display
static status_t getDisplayInfo(DisplayID dpy, DisplayInfo* info);
static ssize_t getDisplayWidth(DisplayID dpy);
static ssize_t getDisplayHeight(DisplayID dpy);
static ssize_t getDisplayOrientation(DisplayID dpy);
status_t linkToComposerDeath(const sp<IBinder::DeathRecipient>& recipient,
void* cookie = NULL, uint32_t flags = 0);
status_t hide(SurfaceID id);
status_t show(SurfaceID id, int32_t layer = -1);
status_t freeze(SurfaceID id);
status_t unfreeze(SurfaceID id);
status_t setFlags(SurfaceID id, uint32_t flags, uint32_t mask);
status_t setTransparentRegionHint(SurfaceID id, const Region& transparent);
status_t setLayer(SurfaceID id, int32_t layer);
status_t setAlpha(SurfaceID id, float alpha=1.0f);
status_t setFreezeTint(SurfaceID id, uint32_t tint);
status_t setMatrix(SurfaceID id, float dsdx, float dtdx, float dsdy, float dtdy);
status_t setPosition(SurfaceID id, int32_t x, int32_t y);
status_t setSize(SurfaceID id, uint32_t w, uint32_t h);
status_t destroySurface(SurfaceID sid);
private:
virtual void onFirstRef();
inline layer_state_t* get_state_l(SurfaceID id);
layer_state_t* lockLayerState(SurfaceID id);
inline void unlockLayerState();
mutable Mutex mLock;
SortedVector<layer_state_t> mStates;
int32_t mTransactionOpen;
layer_state_t* mPrebuiltLayerState;
// these don't need to be protected because they never change
// after assignment
status_t mStatus;
sp<ISurfaceComposerClient> mClient;
};
// ---------------------------------------------------------------------------
class ScreenshotClient
{
sp<IMemoryHeap> mHeap;
uint32_t mWidth;
uint32_t mHeight;
PixelFormat mFormat;
public:
ScreenshotClient();
// frees the previous screenshot and capture a new one
status_t update();
status_t update(uint32_t reqWidth, uint32_t reqHeight);
status_t update(uint32_t reqWidth, uint32_t reqHeight,
uint32_t minLayerZ, uint32_t maxLayerZ);
// release memory occupied by the screenshot
void release();
// pixels are valid until this object is freed or
// release() or update() is called
void const* getPixels() const;
uint32_t getWidth() const;
uint32_t getHeight() const;
PixelFormat getFormat() const;
uint32_t getStride() const;
// size of allocated memory in bytes
size_t getSize() const;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_SF_SURFACE_COMPOSER_CLIENT_H
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