1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * Copyright (C) 2012, The Linux Foundation. All rights reserved. 4 * 5 * Not a Contribution, Apache license notifications and license are 6 * retained 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 21 #ifndef HWC_EXTERNAL_DISPLAY_H 22 #define HWC_EXTERNAL_DISPLAY_H 23 24 #include <utils/threads.h> 25 #include <linux/fb.h> 26 27 struct hwc_context_t; 28 29 namespace qhwc { 30 31 class ExternalDisplay 32 { 33 public: 34 ExternalDisplay(hwc_context_t* ctx); 35 ~ExternalDisplay(); 36 int getModeCount() const; 37 void getEDIDModes(int *out) const; 38 void setExternalDisplay(int connected); 39 bool post(); 40 void setHPD(uint32_t startEnd); 41 void setEDIDMode(int resMode); 42 void setActionSafeDimension(int w, int h); 43 44 private: 45 bool readResolution(); 46 int parseResolution(char* edidStr, int* edidModes); 47 void setResolution(int ID); 48 bool openFramebuffer(); 49 bool closeFrameBuffer(); 50 bool writeHPDOption(int userOption) const; 51 bool isValidMode(int ID); 52 void handleUEvent(char* str, int len); 53 int getModeOrder(int mode); 54 int getBestMode(); 55 void resetInfo(); 56 void setDpyAttr(); 57 void getAttrForMode(int& width, int& height, int& fps); 58 59 mutable android::Mutex mExtDispLock; 60 int mFd; 61 int mCurrentMode; 62 int mExternalDisplay; 63 int mResolutionMode; 64 char mEDIDs[128]; 65 int mEDIDModes[64]; 66 int mModeCount; 67 hwc_context_t *mHwcContext; 68 fb_var_screeninfo mVInfo; 69 }; 70 71 }; //qhwc 72 // --------------------------------------------------------------------------- 73 #endif //HWC_EXTERNAL_DISPLAY_H 74