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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 #ifndef TALK_APP_WEBRTC_ANDROIDVIDEOCAPTURER_H_ | |
28 #define TALK_APP_WEBRTC_ANDROIDVIDEOCAPTURER_H_ | |
29 | |
30 #include <string> | |
31 #include <vector> | |
32 | |
33 #include "webrtc/base/thread_checker.h" | |
34 #include "webrtc/common_video/include/video_frame_buffer.h" | |
35 #include "webrtc/media/base/videocapturer.h" | |
36 | |
37 namespace webrtc { | |
38 | |
39 class AndroidVideoCapturer; | |
40 | |
41 class AndroidVideoCapturerDelegate : public rtc::RefCountInterface { | |
42 public: | |
43 virtual ~AndroidVideoCapturerDelegate() {} | |
44 // Start capturing. The implementation of the delegate must call | |
45 // AndroidVideoCapturer::OnCapturerStarted with the result of this request. | |
46 virtual void Start(int width, int height, int framerate, | |
47 AndroidVideoCapturer* capturer) = 0; | |
48 | |
49 // Stops capturing. | |
50 // The delegate may not call into AndroidVideoCapturer after this call. | |
51 virtual void Stop() = 0; | |
52 | |
53 // Must returns a JSON string "{{width=xxx, height=xxx, framerate = xxx}}" | |
54 virtual std::string GetSupportedFormats() = 0; | |
55 }; | |
56 | |
57 // Android implementation of cricket::VideoCapturer for use with WebRtc | |
58 // PeerConnection. | |
59 class AndroidVideoCapturer : public cricket::VideoCapturer { | |
60 public: | |
61 explicit AndroidVideoCapturer( | |
62 const rtc::scoped_refptr<AndroidVideoCapturerDelegate>& delegate); | |
63 virtual ~AndroidVideoCapturer(); | |
64 | |
65 // Called from JNI when the capturer has been started. | |
66 void OnCapturerStarted(bool success); | |
67 | |
68 // Called from JNI when a new frame has been captured. | |
69 // Argument |buffer| is intentionally by value, for use with rtc::Bind. | |
70 void OnIncomingFrame( | |
71 const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& buffer, | |
72 int rotation, | |
73 int64_t time_stamp); | |
74 | |
75 // Called from JNI to request a new video format. | |
76 void OnOutputFormatRequest(int width, int height, int fps); | |
77 | |
78 AndroidVideoCapturerDelegate* delegate() { return delegate_.get(); } | |
79 | |
80 // cricket::VideoCapturer implementation. | |
81 bool GetBestCaptureFormat(const cricket::VideoFormat& desired, | |
82 cricket::VideoFormat* best_format) override; | |
83 | |
84 private: | |
85 // cricket::VideoCapturer implementation. | |
86 // Video frames will be delivered using | |
87 // cricket::VideoCapturer::SignalFrameCaptured on the thread that calls Start. | |
88 cricket::CaptureState Start( | |
89 const cricket::VideoFormat& capture_format) override; | |
90 void Stop() override; | |
91 bool IsRunning() override; | |
92 bool IsScreencast() const override { return false; } | |
93 bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override; | |
94 | |
95 bool running_; | |
96 rtc::scoped_refptr<AndroidVideoCapturerDelegate> delegate_; | |
97 | |
98 rtc::ThreadChecker thread_checker_; | |
99 | |
100 class FrameFactory; | |
101 FrameFactory* frame_factory_; // Owned by cricket::VideoCapturer. | |
102 | |
103 cricket::CaptureState current_state_; | |
104 }; | |
105 | |
106 } // namespace webrtc | |
107 | |
108 #endif // TALK_APP_WEBRTC_ANDROIDVIDEOCAPTURER_H_ | |
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