1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
18 #define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
19 
20 #include "GlWrapper.h"
21 
22 #include <android/frameworks/automotive/display/1.0/IAutomotiveDisplayProxyService.h>
23 #include <android/hardware/automotive/evs/1.1/IEvsDisplay.h>
24 #include <ui/GraphicBuffer.h>
25 
26 namespace android::hardware::automotive::evs::V1_1::implementation {
27 
28 class EvsDisplay : public IEvsDisplay {
29   public:
30     // Methods from ::android::hardware::automotive::evs::V1_0::IEvsDisplay follow.
31     Return<void> getDisplayInfo(getDisplayInfo_cb _hidl_cb) override;
32     Return<V1_0::EvsResult> setDisplayState(V1_0::DisplayState state) override;
33     Return<V1_0::DisplayState> getDisplayState() override;
34     Return<void> getTargetBuffer(getTargetBuffer_cb _hidl_cb) override;
35     Return<V1_0::EvsResult> returnTargetBufferForDisplay(const V1_0::BufferDesc& buffer) override;
36 
37     // Methods from ::android::hardware::automotive::evs::V1_1::IEvsDisplay follow.
38     Return<void> getDisplayInfo_1_1(getDisplayInfo_1_1_cb _info_cb) override;
39 
40     // Implementation details
41     EvsDisplay();
42     EvsDisplay(
43             sp<frameworks::automotive::display::V1_0::IAutomotiveDisplayProxyService> pDisplayProxy,
44             uint64_t displayId);
45     virtual ~EvsDisplay() override;
46 
47     void forceShutdown();  // This gets called if another caller "steals" ownership of the display
48     Return<V1_0::EvsResult> returnTargetBufferForDisplayImpl(const uint32_t bufferId,
49                                                              const buffer_handle_t memHandle);
50 
51   private:
52     V1_0::DisplayDesc mInfo = {};
53     V1_0::BufferDesc mBuffer = {};  // A graphics buffer into which we'll store images
54     V1_0::DisplayState mRequestedState = V1_0::DisplayState::NOT_VISIBLE;
55     bool mFrameBusy = false;  // A flag telling us our buffer is in use
56     std::mutex mAccessLock;
57     sp<frameworks::automotive::display::V1_0::IAutomotiveDisplayProxyService> mDisplayProxy;
58     uint64_t mDisplayId;
59     std::unique_ptr<GlWrapper> mGlWrapper;
60 };
61 
62 }  // namespace android::hardware::automotive::evs::V1_1::implementation
63 
64 #endif  // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
65