michael@0: /*
michael@0:  * Copyright (c) 2012, The Linux Foundation. All rights reserved.
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #ifndef mozilla_HwcComposer2D
michael@0: #define mozilla_HwcComposer2D
michael@0: 
michael@0: #include "Composer2D.h"
michael@0: #include "Layers.h"
michael@0: #include <vector>
michael@0: #include <list>
michael@0: 
michael@0: #include <hardware/hwcomposer.h>
michael@0: #if ANDROID_VERSION >= 17
michael@0: #include <ui/Fence.h>
michael@0: #endif
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: namespace layers {
michael@0: class ContainerLayer;
michael@0: class Layer;
michael@0: }
michael@0: 
michael@0: //Holds a dynamically allocated vector of rectangles
michael@0: //used to decribe the complex visible region of a layer
michael@0: typedef std::vector<hwc_rect_t> RectVector;
michael@0: #if ANDROID_VERSION >= 17
michael@0: typedef hwc_composer_device_1_t HwcDevice;
michael@0: typedef hwc_display_contents_1_t HwcList;
michael@0: typedef hwc_layer_1_t HwcLayer;
michael@0: #else
michael@0: typedef hwc_composer_device_t HwcDevice;
michael@0: typedef hwc_layer_list_t HwcList;
michael@0: typedef hwc_layer_t HwcLayer;
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * HwcComposer2D provides a way for gecko to render frames
michael@0:  * using hwcomposer.h in the AOSP HAL.
michael@0:  *
michael@0:  * hwcomposer.h defines an interface for display composition
michael@0:  * using dedicated hardware. This hardware is usually faster
michael@0:  * or more power efficient than the GPU. However, in exchange
michael@0:  * for better performance, generality has to be sacrificed:
michael@0:  * no 3d transforms, no intermediate surfaces, no special shader effects,
michael@0:  * and loss of other goodies depending on the platform.
michael@0:  *
michael@0:  * In general, when hwc is enabled gecko tries to compose
michael@0:  * its frames using HwcComposer2D first. Then if HwcComposer2D is
michael@0:  * unable to compose a frame then it falls back to compose it
michael@0:  * using the GPU with OpenGL.
michael@0:  *
michael@0:  */
michael@0: class HwcComposer2D : public mozilla::layers::Composer2D {
michael@0: public:
michael@0:     HwcComposer2D();
michael@0:     virtual ~HwcComposer2D();
michael@0: 
michael@0:     int Init(hwc_display_t aDisplay, hwc_surface_t aSurface);
michael@0: 
michael@0:     bool Initialized() const { return mHwc; }
michael@0: 
michael@0:     static HwcComposer2D* GetInstance();
michael@0: 
michael@0:     // Returns TRUE if the container has been succesfully rendered
michael@0:     // Returns FALSE if the container cannot be fully rendered
michael@0:     // by this composer so nothing was rendered at all
michael@0:     bool TryRender(layers::Layer* aRoot, const gfx::Matrix& aGLWorldTransform,
michael@0:                    bool aGeometryChanged) MOZ_OVERRIDE;
michael@0: 
michael@0:     bool Render(EGLDisplay dpy, EGLSurface sur);
michael@0: 
michael@0: private:
michael@0:     void Reset();
michael@0:     void Prepare(buffer_handle_t fbHandle, int fence);
michael@0:     bool Commit();
michael@0:     bool TryHwComposition();
michael@0:     bool ReallocLayerList();
michael@0:     bool PrepareLayerList(layers::Layer* aContainer, const nsIntRect& aClip,
michael@0:           const gfxMatrix& aParentTransform, const gfxMatrix& aGLWorldTransform);
michael@0:     void setCrop(HwcLayer* layer, hwc_rect_t srcCrop);
michael@0:     void setHwcGeometry(bool aGeometryChanged);
michael@0: 
michael@0:     HwcDevice*              mHwc;
michael@0:     HwcList*                mList;
michael@0:     hwc_display_t           mDpy;
michael@0:     hwc_surface_t           mSur;
michael@0:     nsIntRect               mScreenRect;
michael@0:     int                     mMaxLayerCount;
michael@0:     bool                    mColorFill;
michael@0:     bool                    mRBSwapSupport;
michael@0:     //Holds all the dynamically allocated RectVectors needed
michael@0:     //to render the current frame
michael@0:     std::list<RectVector>   mVisibleRegions;
michael@0: #if ANDROID_VERSION >= 17
michael@0:     android::sp<android::Fence> mPrevRetireFence;
michael@0:     android::sp<android::Fence> mPrevDisplayFence;
michael@0: #endif
michael@0:     nsTArray<layers::LayerComposite*> mHwcLayerMap;
michael@0:     bool                    mPrepared;
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // mozilla_HwcComposer2D