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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_SURFACE_COMPOSER_CLIENT_H
#define ANDROID_SURFACE_COMPOSER_CLIENT_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/SortedVector.h>
#include <utils/KeyedVector.h>
#include <utils/RefBase.h>
#include <utils/threads.h>
#include <ui/PixelFormat.h>
#include <ui/ISurfaceComposer.h>
#include <ui/Region.h>
#include <ui/Surface.h>
namespace android {
// ---------------------------------------------------------------------------
class Region;
class SurfaceFlingerSynchro;
struct per_client_cblk_t;
struct layer_cblk_t;
class SurfaceComposerClient : virtual 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;
// Retrieve a client for an existing connection.
static sp<SurfaceComposerClient>
clientForConnection(const sp<IBinder>& conn);
// Forcibly remove connection before all references have gone away.
void dispose();
// ------------------------------------------------------------------------
// surface creation / destruction
//! Create a surface
sp<Surface> createSurface(
int pid, //!< pid of the process the surfacec 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 paramters
// 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);
// 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);
private:
friend class Surface;
SurfaceComposerClient(const sp<ISurfaceComposer>& sm,
const sp<IBinder>& conn);
status_t hide(Surface* surface);
status_t show(Surface* surface, int32_t layer = -1);
status_t freeze(Surface* surface);
status_t unfreeze(Surface* surface);
status_t setFlags(Surface* surface, uint32_t flags, uint32_t mask);
status_t setTransparentRegionHint(Surface* surface, const Region& transparent);
status_t setLayer(Surface* surface, int32_t layer);
status_t setAlpha(Surface* surface, float alpha=1.0f);
status_t setFreezeTint(Surface* surface, uint32_t tint);
status_t setMatrix(Surface* surface, float dsdx, float dtdx, float dsdy, float dtdy);
status_t setPosition(Surface* surface, int32_t x, int32_t y);
status_t setSize(Surface* surface, uint32_t w, uint32_t h);
//! Unlock the surface, and specify the dirty region if any
status_t unlockAndPostSurface(Surface* surface);
status_t unlockSurface(Surface* surface);
status_t lockSurface(Surface* surface,
Surface::SurfaceInfo* info,
Region* dirty,
bool blocking = true);
status_t nextBuffer(Surface* surface,
Surface::SurfaceInfo* info);
status_t destroySurface(SurfaceID sid);
void _init(const sp<ISurfaceComposer>& sm,
const sp<ISurfaceFlingerClient>& conn);
void _signal_server();
static void _send_dirty_region(layer_cblk_t* lcblk, const Region& dirty);
inline layer_state_t* _get_state_l(const sp<Surface>& surface);
layer_state_t* _lockLayerState(const sp<Surface>& surface);
inline void _unlockLayerState();
status_t validateSurface(
per_client_cblk_t const* cblk, Surface const * surface);
void pinHeap(const sp<IMemoryHeap>& heap);
mutable Mutex mLock;
layer_state_t* mPrebuiltLayerState;
SortedVector<layer_state_t> mStates;
int32_t mTransactionOpen;
// these don't need to be protected because they never change
// after assignment
status_t mStatus;
per_client_cblk_t* mControl;
sp<IMemory> mControlMemory;
sp<ISurfaceFlingerClient> mClient;
sp<IMemoryHeap> mSurfaceHeap;
uint8_t* mSurfaceHeapBase;
void* mGL;
SurfaceFlingerSynchro* mSignalServer;
};
}; // namespace android
#endif // ANDROID_SURFACE_COMPOSER_CLIENT_H
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