hwc_callbacks.h revision 4a1efd0680d2e9b61739e1eaeffd89174d6d2605 
1/*
2 * Copyright (c) 2016-2017, 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_CALLBACKS_H__
31#define __HWC_CALLBACKS_H__
32
33#define HWC2_INCLUDE_STRINGIFICATION
34#define HWC2_USE_CPP11
35#include <hardware/hwcomposer2.h>
36#undef HWC2_INCLUDE_STRINGIFICATION
37#undef HWC2_USE_CPP11
38
39namespace sdm {
40
41class HWCCallbacks {
42 public:
43  HWC2::Error Hotplug(hwc2_display_t display, HWC2::Connection state);
44  HWC2::Error Refresh(hwc2_display_t display);
45  HWC2::Error Vsync(hwc2_display_t display, int64_t timestamp);
46  HWC2::Error Register(HWC2::Callback, hwc2_callback_data_t callback_data,
47                       hwc2_function_pointer_t pointer);
48
49  bool VsyncCallbackRegistered() { return (vsync_ != nullptr && vsync_data_ != nullptr); }
50
51 private:
52  hwc2_callback_data_t hotplug_data_ = nullptr;
53  hwc2_callback_data_t refresh_data_ = nullptr;
54  hwc2_callback_data_t vsync_data_ = nullptr;
55
56  HWC2_PFN_HOTPLUG hotplug_ = nullptr;
57  HWC2_PFN_REFRESH refresh_ = nullptr;
58  HWC2_PFN_VSYNC vsync_ = nullptr;
59};
60
61}  // namespace sdm
62
63#endif  // __HWC_CALLBACKS_H__
64