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1 /* | |
2 * libjingle | |
3 * Copyright 2015 Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright notice, | |
9 * this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 * this list of conditions and the following disclaimer in the documentation | |
12 * and/or other materials provided with the distribution. | |
13 * 3. The name of the author may not be used to endorse or promote products | |
14 * derived from this software without specific prior written permission. | |
15 * | |
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 */ | |
27 | |
28 #ifndef TALK_APP_WEBRTC_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_ | |
29 #define TALK_APP_WEBRTC_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_ | |
30 | |
31 #include "webrtc/media/base/videocapturer.h" | |
32 #include "webrtc/video_frame.h" | |
33 | |
34 #import <AVFoundation/AVFoundation.h> | |
35 | |
36 @class RTCAVFoundationVideoCapturerInternal; | |
37 | |
38 namespace rtc { | |
39 class Thread; | |
40 } // namespace rtc | |
41 | |
42 namespace webrtc { | |
43 | |
44 class AVFoundationVideoCapturer : public cricket::VideoCapturer, | |
45 public rtc::MessageHandler { | |
46 public: | |
47 AVFoundationVideoCapturer(); | |
48 ~AVFoundationVideoCapturer(); | |
49 | |
50 cricket::CaptureState Start(const cricket::VideoFormat& format) override; | |
51 void Stop() override; | |
52 bool IsRunning() override; | |
53 bool IsScreencast() const override { | |
54 return false; | |
55 } | |
56 bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override { | |
57 fourccs->push_back(cricket::FOURCC_NV12); | |
58 return true; | |
59 } | |
60 | |
61 // Returns the active capture session. Calls to the capture session should | |
62 // occur on the RTCDispatcherTypeCaptureSession queue in RTCDispatcher. | |
63 AVCaptureSession* GetCaptureSession(); | |
64 | |
65 // Returns whether the rear-facing camera can be used. | |
66 // e.g. It can't be used because it doesn't exist. | |
67 bool CanUseBackCamera() const; | |
68 | |
69 // Switches the camera being used (either front or back). | |
70 void SetUseBackCamera(bool useBackCamera); | |
71 bool GetUseBackCamera() const; | |
72 | |
73 // Converts the sample buffer into a cricket::CapturedFrame and signals the | |
74 // frame for capture. | |
75 void CaptureSampleBuffer(CMSampleBufferRef sampleBuffer); | |
76 | |
77 // Handles messages from posts. | |
78 void OnMessage(rtc::Message *msg) override; | |
79 | |
80 private: | |
81 void OnFrameMessage(CVImageBufferRef image_buffer, int64_t capture_time); | |
82 | |
83 RTCAVFoundationVideoCapturerInternal* _capturer; | |
84 rtc::Thread* _startThread; // Set in Start(), unset in Stop(). | |
85 }; // AVFoundationVideoCapturer | |
86 | |
87 } // namespace webrtc | |
88 | |
89 #endif // TALK_APP_WEBRTC_OBJC_AVFOUNDATION_CAPTURER_H_ | |
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