replicant-frameworks_native/services/surfaceflinger/DisplayHardware/HWComposer.h
Mathias Agopian 921e6ac4b7 SurfaceFlinger cleanup
mostly refactored SurfaceFlinger.h, but also removed dead code.
cleaned-up a few includes as well.

Change-Id: Ib15f4ffe567912b61ee98aa076c6a283b72811b5
2012-07-24 00:09:35 -07:00

251 lines
7.6 KiB
C++

/*
* Copyright (C) 2010 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_HWCOMPOSER_H
#define ANDROID_SF_HWCOMPOSER_H
#include <stdint.h>
#include <sys/types.h>
#include <EGL/egl.h>
#include <hardware/hwcomposer_defs.h>
#include <utils/Condition.h>
#include <utils/Mutex.h>
#include <utils/StrongPointer.h>
#include <utils/Thread.h>
#include <utils/Timers.h>
#include <utils/Vector.h>
extern "C" int clock_nanosleep(clockid_t clock_id, int flags,
const struct timespec *request,
struct timespec *remain);
struct hwc_composer_device_1;
struct hwc_layer_list_1;
struct hwc_procs;
namespace android {
// ---------------------------------------------------------------------------
class GraphicBuffer;
class LayerBase;
class String8;
class SurfaceFlinger;
class HWComposer
{
public:
class EventHandler {
friend class HWComposer;
virtual void onVSyncReceived(int dpy, nsecs_t timestamp) = 0;
protected:
virtual ~EventHandler() {}
};
HWComposer(const sp<SurfaceFlinger>& flinger,
EventHandler& handler, nsecs_t refreshPeriod);
~HWComposer();
status_t initCheck() const;
// tells the HAL what the framebuffer is
void setFrameBuffer(EGLDisplay dpy, EGLSurface sur);
// Asks the HAL what it can do
status_t prepare() const;
// disable hwc until next createWorkList
status_t disable();
// commits the list
status_t commit() const;
// release hardware resources and blank screen
status_t release() const;
// acquire hardware resources and unblank screen
status_t acquire() const;
// create a work list for numLayers layer. sets HWC_GEOMETRY_CHANGED.
status_t createWorkList(size_t numLayers);
// get the layer array created by createWorkList()
size_t getNumLayers() const;
// get number of layers of the given type as updated in prepare().
// type is HWC_OVERLAY or HWC_FRAMEBUFFER
size_t getLayerCount(int type) const;
// needed forward declarations
class LayerListIterator;
/*
* Interface to hardware composer's layers functionality.
* This abstracts the HAL interface to layers which can evolve in
* incompatible ways from one release to another.
* The idea is that we could extend this interface as we add
* features to h/w composer.
*/
class HWCLayerInterface {
protected:
virtual ~HWCLayerInterface() { }
public:
virtual int32_t getCompositionType() const = 0;
virtual uint32_t getHints() const = 0;
virtual int getAndResetReleaseFenceFd() = 0;
virtual void setDefaultState() = 0;
virtual void setSkip(bool skip) = 0;
virtual void setBlending(uint32_t blending) = 0;
virtual void setTransform(uint32_t transform) = 0;
virtual void setFrame(const Rect& frame) = 0;
virtual void setCrop(const Rect& crop) = 0;
virtual void setVisibleRegionScreen(const Region& reg) = 0;
virtual void setBuffer(const sp<GraphicBuffer>& buffer) = 0;
virtual void setAcquireFenceFd(int fenceFd) = 0;
};
/*
* Interface used to implement an iterator to a list
* of HWCLayer.
*/
class HWCLayer : public HWCLayerInterface {
friend class LayerListIterator;
// select the layer at the given index
virtual status_t setLayer(size_t index) = 0;
virtual HWCLayer* dup() = 0;
static HWCLayer* copy(HWCLayer *rhs) {
return rhs ? rhs->dup() : NULL;
}
protected:
virtual ~HWCLayer() { }
};
/*
* Iterator through a HWCLayer list.
* This behaves more or less like a forward iterator.
*/
class LayerListIterator {
friend struct HWComposer;
HWCLayer* const mLayerList;
size_t mIndex;
LayerListIterator() : mLayerList(NULL), mIndex(0) { }
LayerListIterator(HWCLayer* layer, size_t index)
: mLayerList(layer), mIndex(index) { }
// we don't allow assignment, because we don't need it for now
LayerListIterator& operator = (const LayerListIterator& rhs);
public:
// copy operators
LayerListIterator(const LayerListIterator& rhs)
: mLayerList(HWCLayer::copy(rhs.mLayerList)), mIndex(rhs.mIndex) {
}
~LayerListIterator() { delete mLayerList; }
// pre-increment
LayerListIterator& operator++() {
mLayerList->setLayer(++mIndex);
return *this;
}
// dereference
HWCLayerInterface& operator * () { return *mLayerList; }
HWCLayerInterface* operator -> () { return mLayerList; }
// comparison
bool operator == (const LayerListIterator& rhs) const {
return mIndex == rhs.mIndex;
}
bool operator != (const LayerListIterator& rhs) const {
return !operator==(rhs);
}
};
// Returns an iterator to the beginning of the layer list
LayerListIterator begin();
// Returns an iterator to the end of the layer list
LayerListIterator end();
// Events handling ---------------------------------------------------------
enum {
EVENT_VSYNC = HWC_EVENT_VSYNC
};
void eventControl(int event, int enabled);
// this class is only used to fake the VSync event on systems that don't
// have it.
class VSyncThread : public Thread {
HWComposer& mHwc;
mutable Mutex mLock;
Condition mCondition;
bool mEnabled;
mutable nsecs_t mNextFakeVSync;
nsecs_t mRefreshPeriod;
virtual void onFirstRef();
virtual bool threadLoop();
public:
VSyncThread(HWComposer& hwc);
void setEnabled(bool enabled);
};
friend class VSyncThread;
// for debugging ----------------------------------------------------------
void dump(String8& out, char* scratch, size_t SIZE,
const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const;
private:
LayerListIterator getLayerIterator(size_t index);
struct cb_context;
static void hook_invalidate(struct hwc_procs* procs);
static void hook_vsync(struct hwc_procs* procs, int dpy, int64_t timestamp);
inline void invalidate();
inline void vsync(int dpy, int64_t timestamp);
sp<SurfaceFlinger> mFlinger;
hw_module_t const* mModule;
struct hwc_composer_device_1* mHwc;
struct hwc_layer_list_1* mList;
size_t mCapacity;
mutable size_t mNumOVLayers;
mutable size_t mNumFBLayers;
EGLDisplay mDpy;
EGLSurface mSur;
cb_context* mCBContext;
EventHandler& mEventHandler;
nsecs_t mRefreshPeriod;
size_t mVSyncCount;
sp<VSyncThread> mVSyncThread;
bool mDebugForceFakeVSync;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_SF_HWCOMPOSER_H