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
36struct hwc_context_t;
37
38namespace qhwc {
39
40class VirtualDisplay
41{
42public:
43    VirtualDisplay(hwc_context_t* ctx);
44    ~VirtualDisplay();
45    int  configure();
46    void getAttributes(int& width, int& height);
47    int  teardown();
48    bool isConnected() {
49        return  mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].connected;
50    }
51private:
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