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1 /* | |
2 * Copyright 2015 The WebRTC project authors. All Rights Reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #ifndef WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_ | |
12 #define WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_ | |
13 | |
14 #include "webrtc/base/scoped_ptr.h" | |
15 #include "webrtc/media/base/videocapturer.h" | |
16 #include "webrtc/video_frame.h" | |
17 | |
18 #import <AVFoundation/AVFoundation.h> | |
19 | |
20 @class RTCAVFoundationVideoCapturerInternal; | |
21 | |
22 namespace rtc { | |
23 class Thread; | |
24 } // namespace rtc | |
25 | |
26 namespace webrtc { | |
27 | |
28 class AVFoundationVideoCapturer : public cricket::VideoCapturer, | |
29 public rtc::MessageHandler { | |
30 public: | |
31 AVFoundationVideoCapturer(); | |
32 ~AVFoundationVideoCapturer(); | |
33 | |
34 cricket::CaptureState Start(const cricket::VideoFormat& format) override; | |
35 void Stop() override; | |
36 bool IsRunning() override; | |
37 bool IsScreencast() const override { | |
38 return false; | |
39 } | |
40 bool GetPreferredFourccs(std::vector<uint32_t> *fourccs) override { | |
41 fourccs->push_back(cricket::FOURCC_NV12); | |
42 return true; | |
43 } | |
44 | |
45 // Returns the active capture session. Calls to the capture session should | |
46 // occur on the RTCDispatcherTypeCaptureSession queue in RTCDispatcher. | |
47 AVCaptureSession* GetCaptureSession(); | |
48 | |
49 // Returns whether the rear-facing camera can be used. | |
50 // e.g. It can't be used because it doesn't exist. | |
51 bool CanUseBackCamera() const; | |
52 | |
53 // Switches the camera being used (either front or back). | |
54 void SetUseBackCamera(bool useBackCamera); | |
55 bool GetUseBackCamera() const; | |
56 | |
57 // Converts the sample buffer into a cricket::CapturedFrame and signals the | |
58 // frame for capture. | |
59 void CaptureSampleBuffer(CMSampleBufferRef sampleBuffer); | |
60 | |
61 // Handles messages from posts. | |
62 void OnMessage(rtc::Message *msg) override; | |
63 | |
64 private: | |
65 void OnFrameMessage(CVImageBufferRef image_buffer, int64_t capture_time); | |
66 | |
67 RTCAVFoundationVideoCapturerInternal *_capturer; | |
68 rtc::Thread *_startThread; // Set in Start(), unset in Stop(). | |
69 }; // AVFoundationVideoCapturer | |
70 | |
71 } // namespace webrtc | |
72 | |
73 #endif // WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_ | |
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