1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * Copyright (C) 2012-2013, 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 2 25 26 namespace qhwc { 27 28 class CopyBit { 29 public: 30 CopyBit(); 31 ~CopyBit(); 32 // API to get copybit engine(non static) 33 struct copybit_device_t *getCopyBitDevice(); 34 //Sets up members and prepares copybit if conditions are met 35 bool prepare(hwc_context_t *ctx, hwc_display_contents_1_t *list, 36 int dpy); 37 //Draws layer if the layer is set for copybit in prepare 38 bool draw(hwc_context_t *ctx, hwc_display_contents_1_t *list, 39 int dpy, int* fd); 40 // resets the values 41 void reset(); 42 43 private_handle_t * getCurrentRenderBuffer(); 44 45 void setReleaseFd(int fd); 46 47 private: 48 // holds the copybit device 49 struct copybit_device_t *mEngine; 50 // Helper functions for copybit composition 51 int drawLayerUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer, 52 private_handle_t *renderBuffer, int dpy); 53 bool canUseCopybitForYUV (hwc_context_t *ctx); 54 bool canUseCopybitForRGB (hwc_context_t *ctx, 55 hwc_display_contents_1_t *list, int dpy); 56 bool validateParams (hwc_context_t *ctx, 57 const hwc_display_contents_1_t *list); 58 //Flags if this feature is on. 59 bool mIsModeOn; 60 // flag that indicates whether CopyBit composition is enabled for this cycle 61 bool mCopyBitDraw; 62 63 unsigned int getRGBRenderingArea 64 (const hwc_display_contents_1_t *list); 65 66 void getLayerResolution(const hwc_layer_1_t* layer, 67 unsigned int &width, unsigned int& height); 68 69 int allocRenderBuffers(int w, int h, int f); 70 71 void freeRenderBuffers(); 72 73 int clear (private_handle_t* hnd, hwc_rect_t& rect); 74 75 private_handle_t* mRenderBuffer[NUM_RENDER_BUFFERS]; 76 77 // Index of the current intermediate render buffer 78 int mCurRenderBufferIndex; 79 80 //These are the the release FDs of the T-2 and T-1 round 81 //We wait on the T-2 fence 82 int mRelFd[2]; 83 84 //Dynamic composition threshold for deciding copybit usage. 85 double mDynThreshold; 86 }; 87 88 }; //namespace qhwc 89 90 #endif //HWC_COPYBIT_H 91
