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 //Type of scanning of EDID(Video Capability Data Block) 32 enum external_scansupport_type { 33 EXT_SCAN_NOT_SUPPORTED = 0, 34 EXT_SCAN_ALWAYS_OVERSCANED = 1, 35 EXT_SCAN_ALWAYS_UNDERSCANED = 2, 36 EXT_SCAN_BOTH_SUPPORTED = 3 37 }; 38 39 class ExternalDisplay 40 { 41 public: 42 ExternalDisplay(hwc_context_t* ctx); 43 ~ExternalDisplay(); 44 int getModeCount() const; 45 void getEDIDModes(int *out) const; isCEUnderscanSupported()46 bool isCEUnderscanSupported() { return mUnderscanSupported; } 47 void setExternalDisplay(bool connected, int extFbNum = 0); isExternalConnected()48 bool isExternalConnected() { return mConnected;}; setExtDpyNum(int extDpyNum)49 void setExtDpyNum(int extDpyNum) { mExtDpyNum = extDpyNum;}; 50 void setHPD(uint32_t startEnd); 51 void setEDIDMode(int resMode); 52 void setActionSafeDimension(int w, int h); 53 void processUEventOnline(const char *str); 54 void processUEventOffline(const char *str); 55 56 private: 57 void readCEUnderscanInfo(); 58 bool readResolution(); 59 int parseResolution(char* edidStr, int* edidModes); 60 void setResolution(int ID); 61 bool openFrameBuffer(int fbNum); 62 bool closeFrameBuffer(); 63 bool writeHPDOption(int userOption) const; 64 bool isValidMode(int ID); 65 void handleUEvent(char* str, int len); 66 int getModeOrder(int mode); 67 int getUserMode(); 68 int getBestMode(); 69 bool isInterlacedMode(int mode); 70 void resetInfo(); 71 void setDpyHdmiAttr(); 72 void setDpyWfdAttr(); 73 void getAttrForMode(int& width, int& height, int& fps); 74 void updateExtDispDevFbIndex(); 75 int configureHDMIDisplay(); 76 int configureWFDDisplay(); 77 int teardownHDMIDisplay(); 78 int teardownWFDDisplay(); 79 int getExtFbNum(int &fbNum); 80 81 mutable android::Mutex mExtDispLock; 82 int mFd; 83 int mCurrentMode; 84 int mConnected; 85 int mConnectedFbNum; 86 int mResolutionMode; 87 char mEDIDs[128]; 88 int mEDIDModes[64]; 89 int mModeCount; 90 bool mUnderscanSupported; 91 hwc_context_t *mHwcContext; 92 fb_var_screeninfo mVInfo; 93 int mHdmiFbNum; 94 int mWfdFbNum; 95 int mExtDpyNum; 96 }; 97 98 }; //qhwc 99 // --------------------------------------------------------------------------- 100 #endif //HWC_EXTERNAL_DISPLAY_H 101