1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/gonk/HwcComposer2D.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,118 @@
1.4 +/*
1.5 + * Copyright (c) 2012, The Linux Foundation. All rights reserved.
1.6 + *
1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
1.8 + * you may not use this file except in compliance with the License.
1.9 + * You may obtain a copy of the License at
1.10 + *
1.11 + * http://www.apache.org/licenses/LICENSE-2.0
1.12 + *
1.13 + * Unless required by applicable law or agreed to in writing, software
1.14 + * distributed under the License is distributed on an "AS IS" BASIS,
1.15 + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
1.16 + * See the License for the specific language governing permissions and
1.17 + * limitations under the License.
1.18 + */
1.19 +
1.20 +#ifndef mozilla_HwcComposer2D
1.21 +#define mozilla_HwcComposer2D
1.22 +
1.23 +#include "Composer2D.h"
1.24 +#include "Layers.h"
1.25 +#include <vector>
1.26 +#include <list>
1.27 +
1.28 +#include <hardware/hwcomposer.h>
1.29 +#if ANDROID_VERSION >= 17
1.30 +#include <ui/Fence.h>
1.31 +#endif
1.32 +
1.33 +namespace mozilla {
1.34 +
1.35 +namespace layers {
1.36 +class ContainerLayer;
1.37 +class Layer;
1.38 +}
1.39 +
1.40 +//Holds a dynamically allocated vector of rectangles
1.41 +//used to decribe the complex visible region of a layer
1.42 +typedef std::vector<hwc_rect_t> RectVector;
1.43 +#if ANDROID_VERSION >= 17
1.44 +typedef hwc_composer_device_1_t HwcDevice;
1.45 +typedef hwc_display_contents_1_t HwcList;
1.46 +typedef hwc_layer_1_t HwcLayer;
1.47 +#else
1.48 +typedef hwc_composer_device_t HwcDevice;
1.49 +typedef hwc_layer_list_t HwcList;
1.50 +typedef hwc_layer_t HwcLayer;
1.51 +#endif
1.52 +
1.53 +/*
1.54 + * HwcComposer2D provides a way for gecko to render frames
1.55 + * using hwcomposer.h in the AOSP HAL.
1.56 + *
1.57 + * hwcomposer.h defines an interface for display composition
1.58 + * using dedicated hardware. This hardware is usually faster
1.59 + * or more power efficient than the GPU. However, in exchange
1.60 + * for better performance, generality has to be sacrificed:
1.61 + * no 3d transforms, no intermediate surfaces, no special shader effects,
1.62 + * and loss of other goodies depending on the platform.
1.63 + *
1.64 + * In general, when hwc is enabled gecko tries to compose
1.65 + * its frames using HwcComposer2D first. Then if HwcComposer2D is
1.66 + * unable to compose a frame then it falls back to compose it
1.67 + * using the GPU with OpenGL.
1.68 + *
1.69 + */
1.70 +class HwcComposer2D : public mozilla::layers::Composer2D {
1.71 +public:
1.72 + HwcComposer2D();
1.73 + virtual ~HwcComposer2D();
1.74 +
1.75 + int Init(hwc_display_t aDisplay, hwc_surface_t aSurface);
1.76 +
1.77 + bool Initialized() const { return mHwc; }
1.78 +
1.79 + static HwcComposer2D* GetInstance();
1.80 +
1.81 + // Returns TRUE if the container has been succesfully rendered
1.82 + // Returns FALSE if the container cannot be fully rendered
1.83 + // by this composer so nothing was rendered at all
1.84 + bool TryRender(layers::Layer* aRoot, const gfx::Matrix& aGLWorldTransform,
1.85 + bool aGeometryChanged) MOZ_OVERRIDE;
1.86 +
1.87 + bool Render(EGLDisplay dpy, EGLSurface sur);
1.88 +
1.89 +private:
1.90 + void Reset();
1.91 + void Prepare(buffer_handle_t fbHandle, int fence);
1.92 + bool Commit();
1.93 + bool TryHwComposition();
1.94 + bool ReallocLayerList();
1.95 + bool PrepareLayerList(layers::Layer* aContainer, const nsIntRect& aClip,
1.96 + const gfxMatrix& aParentTransform, const gfxMatrix& aGLWorldTransform);
1.97 + void setCrop(HwcLayer* layer, hwc_rect_t srcCrop);
1.98 + void setHwcGeometry(bool aGeometryChanged);
1.99 +
1.100 + HwcDevice* mHwc;
1.101 + HwcList* mList;
1.102 + hwc_display_t mDpy;
1.103 + hwc_surface_t mSur;
1.104 + nsIntRect mScreenRect;
1.105 + int mMaxLayerCount;
1.106 + bool mColorFill;
1.107 + bool mRBSwapSupport;
1.108 + //Holds all the dynamically allocated RectVectors needed
1.109 + //to render the current frame
1.110 + std::list<RectVector> mVisibleRegions;
1.111 +#if ANDROID_VERSION >= 17
1.112 + android::sp<android::Fence> mPrevRetireFence;
1.113 + android::sp<android::Fence> mPrevDisplayFence;
1.114 +#endif
1.115 + nsTArray<layers::LayerComposite*> mHwcLayerMap;
1.116 + bool mPrepared;
1.117 +};
1.118 +
1.119 +} // namespace mozilla
1.120 +
1.121 +#endif // mozilla_HwcComposer2D
