1 /*
2  * Copyright 2022 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 #pragma once
18 
19 #include <android-base/logging.h>
20 #include <android-base/unique_fd.h>
21 #include <xf86drm.h>
22 #include <xf86drmMode.h>
23 
24 #include <cstdint>
25 #include <optional>
26 #include <unordered_map>
27 
28 #include "Common.h"
29 
30 namespace aidl::android::hardware::graphics::composer3::impl {
31 
32 class DrmClient;
33 
34 // A RAII object that will clear a drm framebuffer upon destruction.
35 class DrmBuffer {
36    public:
37     ~DrmBuffer();
38 
39     DrmBuffer(const DrmBuffer&) = delete;
40     DrmBuffer& operator=(const DrmBuffer&) = delete;
41 
42     DrmBuffer(DrmBuffer&&) = delete;
43     DrmBuffer& operator=(DrmBuffer&&) = delete;
44 
45    private:
46     friend class DrmClient;
47     friend class DrmDisplay;
48     DrmBuffer(DrmClient& drmClient);
49 
50     DrmClient& mDrmClient;
51 
52     uint32_t mWidth = 0;
53     uint32_t mHeight = 0;
54     uint32_t mDrmFormat = 0;
55     int32_t mPlaneFds[4] = {0, 0, 0, 0};
56     uint32_t mPlaneHandles[4] = {0, 0, 0, 0};
57     uint32_t mPlanePitches[4] = {0, 0, 0, 0};
58     uint32_t mPlaneOffsets[4] = {0, 0, 0, 0};
59     std::optional<uint32_t> mDrmFramebuffer;
60 };
61 
62 }  // namespace aidl::android::hardware::graphics::composer3::impl
63