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#ifndef HWC_AD_H
31#define HWC_AD_H
32
33#include <overlayUtils.h>
34#include <hwc_utils.h>
35
36struct hwc_context_t;
37
38namespace qhwc {
39
40class AssertiveDisplay {
41public:
42    AssertiveDisplay();
43    void markDoable(hwc_context_t *ctx, const hwc_display_contents_1_t* list);
44    bool prepare(hwc_context_t *ctx, const hwc_rect_t& crop,
45            const overlay::utils::Whf& whf,
46            const private_handle_t *hnd);
47    bool draw(hwc_context_t *ctx, int fd, uint32_t offset);
48    //Resets a few members on each draw round
49    void reset() { mDoable = false;
50            mDest = overlay::utils::OV_INVALID;
51    }
52    bool isDoable() const { return mDoable; }
53    bool isModeOn() const { return (mWbFd >= 0); }
54    int getDstFd(hwc_context_t *ctx) const;
55    uint32_t getDstOffset(hwc_context_t *ctx) const;
56
57private:
58    //State of feature turned on and off
59    int mWbFd;
60    bool mDoable;
61    //State of feature existence on certain devices and configs.
62    bool mFeatureEnabled;
63    overlay::utils::eDest mDest;
64};
65
66}
67#endif
68