1 /* 2 * Copyright (c) 2013 The Linux Foundation. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation. nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 31 #ifndef HWC_VIRTUAL_DISPLAY_H 32 #define HWC_VIRTUAL_DISPLAY_H 33 34 #include <linux/fb.h> 35 36 struct hwc_context_t; 37 38 namespace qhwc { 39 40 class VirtualDisplay 41 { 42 public: 43 VirtualDisplay(hwc_context_t* ctx); 44 ~VirtualDisplay(); 45 int configure(); 46 void getAttributes(int& width, int& height); 47 int teardown(); isConnected()48 bool isConnected() { 49 return mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].connected; 50 } 51 private: 52 bool openFrameBuffer(); 53 bool closeFrameBuffer(); 54 void setAttributes(); 55 void initResolution(uint32_t &extW, uint32_t &extH); 56 void setToPrimary(uint32_t maxArea, uint32_t priW, uint32_t priH, 57 uint32_t &extW, uint32_t &extH); 58 void setDownScaleMode(uint32_t maxArea); 59 60 int mFd; 61 hwc_context_t *mHwcContext; 62 fb_var_screeninfo mVInfo; 63 }; 64 }; //qhwc 65 // --------------------------------------------------------------------------- 66 #endif //HWC_VIRTUAL_DISPLAY_H 67