155 lines
4.4 KiB
C++
155 lines
4.4 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SF_HWCOMPOSER_H
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#define ANDROID_SF_HWCOMPOSER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <EGL/egl.h>
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#include <hardware/hwcomposer.h>
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#include <utils/StrongPointer.h>
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#include <utils/Vector.h>
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extern "C" int clock_nanosleep(clockid_t clock_id, int flags,
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const struct timespec *request,
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struct timespec *remain);
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namespace android {
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// ---------------------------------------------------------------------------
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class String8;
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class SurfaceFlinger;
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class LayerBase;
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class HWComposer
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{
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public:
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class EventHandler {
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friend class HWComposer;
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virtual void onVSyncReceived(int dpy, nsecs_t timestamp) = 0;
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protected:
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virtual ~EventHandler() {}
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};
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HWComposer(const sp<SurfaceFlinger>& flinger,
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EventHandler& handler, nsecs_t refreshPeriod);
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~HWComposer();
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status_t initCheck() const;
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// tells the HAL what the framebuffer is
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void setFrameBuffer(EGLDisplay dpy, EGLSurface sur);
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// create a work list for numLayers layer. sets HWC_GEOMETRY_CHANGED.
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status_t createWorkList(size_t numLayers);
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// Asks the HAL what it can do
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status_t prepare() const;
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// disable hwc until next createWorkList
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status_t disable();
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// commits the list
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status_t commit() const;
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// release hardware resources
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status_t release() const;
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// get the layer array created by createWorkList()
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size_t getNumLayers() const;
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hwc_layer_t* getLayers() const;
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// get number of layers of the given type as updated in prepare().
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// type is HWC_OVERLAY or HWC_FRAMEBUFFER
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size_t getLayerCount(int type) const;
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// Events handling ---------------------------------------------------------
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enum {
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EVENT_VSYNC = HWC_EVENT_VSYNC
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};
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status_t eventControl(int event, int enabled);
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// this class is only used to fake the VSync event on systems that don't
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// have it.
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class VSyncThread : public Thread {
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HWComposer& mHwc;
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mutable Mutex mLock;
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Condition mCondition;
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bool mEnabled;
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mutable nsecs_t mNextFakeVSync;
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nsecs_t mRefreshPeriod;
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virtual void onFirstRef();
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virtual bool threadLoop();
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public:
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VSyncThread(HWComposer& hwc);
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void setEnabled(bool enabled);
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};
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friend class VSyncThread;
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// for debugging ----------------------------------------------------------
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void dump(String8& out, char* scratch, size_t SIZE,
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const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const;
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private:
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struct callbacks : public hwc_procs_t {
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// these are here to facilitate the transition when adding
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// new callbacks (an implementation can check for NULL before
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// calling a new callback).
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void (*zero[4])(void);
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};
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struct cb_context {
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callbacks procs;
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HWComposer* hwc;
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};
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static void hook_invalidate(struct hwc_procs* procs);
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static void hook_vsync(struct hwc_procs* procs, int dpy, int64_t timestamp);
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inline void invalidate();
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inline void vsync(int dpy, int64_t timestamp);
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sp<SurfaceFlinger> mFlinger;
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hw_module_t const* mModule;
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hwc_composer_device_t* mHwc;
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hwc_layer_list_t* mList;
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size_t mCapacity;
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mutable size_t mNumOVLayers;
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mutable size_t mNumFBLayers;
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hwc_display_t mDpy;
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hwc_surface_t mSur;
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cb_context mCBContext;
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EventHandler& mEventHandler;
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nsecs_t mRefreshPeriod;
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size_t mVSyncCount;
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sp<VSyncThread> mVSyncThread;
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bool mDebugForceFakeVSync;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_SF_HWCOMPOSER_H
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