1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * Copyright (C) 2012-2014, The Linux Foundation. All rights reserved. 4 * 5 * Not a Contribution, Apache license notifications and license are retained 6 * for attribution purposes only. 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 #ifndef HWC_COPYBIT_H 21 #define HWC_COPYBIT_H 22 #include "hwc_utils.h" 23 24 #define NUM_RENDER_BUFFERS 3 25 //These scaling factors are specific for MDP3. Normally scaling factor 26 //is only 4, but copybit will create temp buffer to let it run through 27 //twice 28 #define MAX_SCALE_FACTOR 16 29 #define MIN_SCALE_FACTOR 0.0625 30 #define MAX_LAYERS_FOR_ABC 2 31 #define INVALID_DIMENSION -1 32 #define NO_UPDATING_LAYER -2 33 namespace qhwc { 34 35 class CopyBit { 36 public: 37 CopyBit(hwc_context_t *ctx, const int& dpy); 38 ~CopyBit(); 39 // API to get copybit engine(non static) 40 struct copybit_device_t *getCopyBitDevice(); 41 //Sets up members and prepares copybit if conditions are met 42 bool prepare(hwc_context_t *ctx, hwc_display_contents_1_t *list, 43 int dpy); 44 //Draws layer if the layer is set for copybit in prepare 45 bool draw(hwc_context_t *ctx, hwc_display_contents_1_t *list, 46 int dpy, int* fd); 47 // resets the values 48 void reset(); 49 50 private_handle_t * getCurrentRenderBuffer(); 51 52 void setReleaseFd(int fd); 53 54 void setReleaseFdSync(int fd); 55 56 bool prepareOverlap(hwc_context_t *ctx, hwc_display_contents_1_t *list); 57 58 int drawOverlap(hwc_context_t *ctx, hwc_display_contents_1_t *list); 59 60 private: 61 /* cached data */ 62 struct LayerCache { 63 int layerCount; 64 buffer_handle_t hnd[MAX_NUM_APP_LAYERS]; 65 hwc_rect_t displayFrame[MAX_NUM_APP_LAYERS]; 66 bool drop[MAX_NUM_APP_LAYERS]; 67 /* c'tor */ 68 LayerCache(); 69 /* clear caching info*/ 70 void reset(); 71 void updateCounts(hwc_context_t *ctx, hwc_display_contents_1_t *list, 72 int dpy); 73 }; 74 /* framebuffer cache*/ 75 struct FbCache { 76 hwc_rect_t FbdirtyRect[NUM_RENDER_BUFFERS]; 77 hwc_rect_t FbdisplayRect[NUM_RENDER_BUFFERS]; 78 int FbIndex; 79 FbCache(); 80 void reset(); 81 void insertAndUpdateFbCache(hwc_rect_t dirtyRect, 82 hwc_rect_t displayRect); 83 int getUnchangedFbDRCount(hwc_rect_t dirtyRect, 84 hwc_rect_t displayRect); 85 }; 86 87 // holds the copybit device 88 struct copybit_device_t *mEngine; 89 bool drawUsingAppBufferComposition(hwc_context_t *ctx, 90 hwc_display_contents_1_t *list, 91 int dpy, int *fd); 92 // Helper functions for copybit composition 93 int drawLayerUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer, 94 private_handle_t *renderBuffer, bool isFG); 95 // Helper function to draw copybit layer for PTOR comp 96 int drawRectUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer, 97 private_handle_t *renderBuffer, hwc_rect_t overlap, 98 hwc_rect_t destRect); 99 int fillColorUsingCopybit(hwc_layer_1_t *layer, 100 private_handle_t *renderBuffer); 101 bool canUseCopybitForYUV (hwc_context_t *ctx); 102 bool canUseCopybitForRGB (hwc_context_t *ctx, 103 hwc_display_contents_1_t *list, int dpy); 104 bool validateParams (hwc_context_t *ctx, 105 const hwc_display_contents_1_t *list); 106 //Flags if this feature is on. 107 bool mIsModeOn; 108 // flag that indicates whether CopyBit composition is enabled for this cycle 109 bool mCopyBitDraw; 110 111 unsigned int getRGBRenderingArea (const hwc_context_t *ctx, 112 const hwc_display_contents_1_t *list); 113 114 void getLayerResolution(const hwc_layer_1_t* layer, 115 unsigned int &width, unsigned int& height); 116 117 int allocRenderBuffers(int w, int h, int f); 118 119 void freeRenderBuffers(); 120 121 int clear (private_handle_t* hnd, hwc_rect_t& rect); 122 123 private_handle_t* mRenderBuffer[NUM_RENDER_BUFFERS]; 124 125 // Index of the current intermediate render buffer 126 int mCurRenderBufferIndex; 127 128 // Release FDs of the intermediate render buffer 129 int mRelFd[NUM_RENDER_BUFFERS]; 130 131 //Dynamic composition threshold for deciding copybit usage. 132 double mDynThreshold; 133 bool mSwapRectEnable; 134 int mAlignedWidth; 135 int mAlignedHeight; 136 int mSwapRect; 137 LayerCache mLayerCache; 138 FbCache mFbCache; 139 hwc_rect_t mDirtyRect; 140 bool prepareSwapRect(hwc_context_t *ctx, hwc_display_contents_1_t *list, 141 int dpy); 142 bool isLayerChanging(hwc_context_t *ctx, 143 hwc_display_contents_1_t *list, int k); 144 bool isSmartBlitPossible(const hwc_display_contents_1_t *list); 145 }; 146 147 }; //namespace qhwc 148 149 #endif //HWC_COPYBIT_H 150
