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 namespace qhwc { 32 33 class CopyBit { 34 public: 35 CopyBit(hwc_context_t *ctx, const int& dpy); 36 ~CopyBit(); 37 // API to get copybit engine(non static) 38 struct copybit_device_t *getCopyBitDevice(); 39 //Sets up members and prepares copybit if conditions are met 40 bool prepare(hwc_context_t *ctx, hwc_display_contents_1_t *list, 41 int dpy); 42 //Draws layer if the layer is set for copybit in prepare 43 bool draw(hwc_context_t *ctx, hwc_display_contents_1_t *list, 44 int dpy, int* fd); 45 // resets the values 46 void reset(); 47 48 private_handle_t * getCurrentRenderBuffer(); 49 50 void setReleaseFd(int fd); 51 52 void setReleaseFdSync(int fd); 53 54 bool prepareOverlap(hwc_context_t *ctx, hwc_display_contents_1_t *list); 55 56 int drawOverlap(hwc_context_t *ctx, hwc_display_contents_1_t *list); 57 58 private: 59 /* cached data */ 60 struct LayerCache { 61 int layerCount; 62 buffer_handle_t hnd[MAX_NUM_APP_LAYERS]; 63 /* c'tor */ 64 LayerCache(); 65 /* clear caching info*/ 66 void reset(); 67 void updateCounts(hwc_context_t *ctx, hwc_display_contents_1_t *list, 68 int dpy); 69 }; 70 /* framebuffer cache*/ 71 struct FbCache { 72 hwc_rect_t FbdirtyRect[NUM_RENDER_BUFFERS]; 73 int FbIndex; 74 FbCache(); 75 void reset(); 76 void insertAndUpdateFbCache(hwc_rect_t dirtyRect); 77 int getUnchangedFbDRCount(hwc_rect_t dirtyRect); 78 }; 79 80 // holds the copybit device 81 struct copybit_device_t *mEngine; 82 bool drawUsingAppBufferComposition(hwc_context_t *ctx, 83 hwc_display_contents_1_t *list, 84 int dpy, int *fd); 85 // Helper functions for copybit composition 86 int drawLayerUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer, 87 private_handle_t *renderBuffer, bool isFG); 88 // Helper function to draw copybit layer for PTOR comp 89 int drawRectUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer, 90 private_handle_t *renderBuffer, hwc_rect_t overlap, 91 hwc_rect_t destRect); 92 int fillColorUsingCopybit(hwc_layer_1_t *layer, 93 private_handle_t *renderBuffer); 94 bool canUseCopybitForYUV (hwc_context_t *ctx); 95 bool canUseCopybitForRGB (hwc_context_t *ctx, 96 hwc_display_contents_1_t *list, int dpy); 97 bool validateParams (hwc_context_t *ctx, 98 const hwc_display_contents_1_t *list); 99 //Flags if this feature is on. 100 bool mIsModeOn; 101 // flag that indicates whether CopyBit composition is enabled for this cycle 102 bool mCopyBitDraw; 103 104 unsigned int getRGBRenderingArea (const hwc_context_t *ctx, 105 const hwc_display_contents_1_t *list); 106 107 void getLayerResolution(const hwc_layer_1_t* layer, 108 unsigned int &width, unsigned int& height); 109 110 int allocRenderBuffers(int w, int h, int f); 111 112 void freeRenderBuffers(); 113 114 int clear (private_handle_t* hnd, hwc_rect_t& rect); 115 116 private_handle_t* mRenderBuffer[NUM_RENDER_BUFFERS]; 117 118 // Index of the current intermediate render buffer 119 int mCurRenderBufferIndex; 120 121 // Release FDs of the intermediate render buffer 122 int mRelFd[NUM_RENDER_BUFFERS]; 123 124 //Dynamic composition threshold for deciding copybit usage. 125 double mDynThreshold; 126 bool mSwapRectEnable; 127 int mAlignedWidth; 128 int mAlignedHeight; 129 int mDirtyLayerIndex; 130 LayerCache mLayerCache; 131 FbCache mFbCache; 132 int getLayersChanging(hwc_context_t *ctx, hwc_display_contents_1_t *list, 133 int dpy); 134 int checkDirtyRect(hwc_context_t *ctx, hwc_display_contents_1_t *list, 135 int dpy); 136 }; 137 138 }; //namespace qhwc 139 140 #endif //HWC_COPYBIT_H 141