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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 
36 struct hwc_context_t;
37 
38 namespace qhwc {
39 
40 class AssertiveDisplay {
41 public:
42     AssertiveDisplay(hwc_context_t *ctx);
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
reset()49     void reset() { mDoable = false;
50             mDest = overlay::utils::OV_INVALID;
51     }
isDoable()52     bool isDoable() const { return mDoable; }
53     int getDstFd() const;
54     uint32_t getDstOffset() const;
55 
56 private:
57     bool mDoable;
58     bool mTurnedOff;
59     //State of feature existence on certain devices and configs.
60     bool mFeatureEnabled;
61     overlay::utils::eDest mDest;
62     void turnOffAD();
63 };
64 
65 }
66 #endif
67