1 /*
2  * Copyright (C) 2023 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 #include <linux/videodev2.h>
19 #include <utility>
20 #include <vector>
21 #include <android/hardware_buffer.h>
22 
23 #include "Buffer.h"
24 #include "Utils.h"
25 
26 namespace android {
27 namespace webcam {
28 
29 struct CameraConfig {
30     uint32_t width = 0;
31     uint32_t height = 0;
32     uint32_t fps = 0;
33     uint32_t fcc = V4L2_PIX_FMT_MJPEG;
34 };
35 
36 // Abstract class which maps camera operations
37 class FrameProvider {
38   public:
FrameProvider(std::shared_ptr<BufferProducer> producer,CameraConfig config)39     FrameProvider(std::shared_ptr<BufferProducer> producer, CameraConfig config)
40         : mBufferProducer(std::move(producer)), mConfig(config) {}
41     virtual ~FrameProvider() = default;
42     virtual void setStreamConfig() = 0;
43     virtual Status startStreaming() = 0;
44     virtual Status stopStreaming() = 0;
45     virtual Status encodeImage(AHardwareBuffer* hardwareBuffer, long timestamp, int rotation) = 0;
isInited()46     [[nodiscard]] virtual bool isInited() const { return mInited; }
47 
48   protected:
49     std::shared_ptr<BufferProducer> mBufferProducer;
50     CameraConfig mConfig;
51     bool mInited = false;
52 };
53 
54 }  // namespace webcam
55 }  // namespace android
56