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Side by Side Diff: talk/media/webrtc/webrtcvideocapturer.h

Issue 1587193006: Move talk/media to webrtc/media (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Rebased to b647aca12a884a13c1728118586245399b55fa3d (#11493) Created 4 years, 10 months ago
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1 /*
2 * libjingle
3 * Copyright 2004 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_MEDIA_WEBRTCVIDEOCAPTURER_H_
29 #define TALK_MEDIA_WEBRTCVIDEOCAPTURER_H_
30
31 #ifdef HAVE_WEBRTC_VIDEO
32
33 #include <string>
34 #include <vector>
35
36 #include "talk/media/base/videocapturer.h"
37 #include "talk/media/webrtc/webrtcvideoframe.h"
38 #include "webrtc/base/asyncinvoker.h"
39 #include "webrtc/base/messagehandler.h"
40 #include "webrtc/base/scoped_ptr.h"
41 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
42 #include "webrtc/modules/video_capture/video_capture.h"
43
44 namespace cricket {
45
46 // Factory to allow injection of a VCM impl into WebRtcVideoCapturer.
47 // DeviceInfos do not have a Release() and therefore need an explicit Destroy().
48 class WebRtcVcmFactoryInterface {
49 public:
50 virtual ~WebRtcVcmFactoryInterface() {}
51 virtual webrtc::VideoCaptureModule* Create(
52 int id, const char* device) = 0;
53 virtual webrtc::VideoCaptureModule::DeviceInfo* CreateDeviceInfo(int id) = 0;
54 virtual void DestroyDeviceInfo(
55 webrtc::VideoCaptureModule::DeviceInfo* info) = 0;
56 };
57
58 // WebRTC-based implementation of VideoCapturer.
59 class WebRtcVideoCapturer : public VideoCapturer,
60 public webrtc::VideoCaptureDataCallback {
61 public:
62 WebRtcVideoCapturer();
63 explicit WebRtcVideoCapturer(WebRtcVcmFactoryInterface* factory);
64 virtual ~WebRtcVideoCapturer();
65
66 bool Init(const Device& device);
67 bool Init(webrtc::VideoCaptureModule* module);
68
69 // Override virtual methods of the parent class VideoCapturer.
70 virtual bool GetBestCaptureFormat(const VideoFormat& desired,
71 VideoFormat* best_format);
72 virtual CaptureState Start(const VideoFormat& capture_format);
73 virtual void Stop();
74 virtual bool IsRunning();
75 virtual bool IsScreencast() const { return false; }
76 virtual bool SetApplyRotation(bool enable);
77
78 protected:
79 // Override virtual methods of the parent class VideoCapturer.
80 virtual bool GetPreferredFourccs(std::vector<uint32_t>* fourccs);
81
82 private:
83 // Callback when a frame is captured by camera.
84 virtual void OnIncomingCapturedFrame(const int32_t id,
85 const webrtc::VideoFrame& frame);
86 virtual void OnCaptureDelayChanged(const int32_t id,
87 const int32_t delay);
88
89 // Used to signal captured frames on the same thread as invoked Start().
90 // With WebRTC's current VideoCapturer implementations, this will mean a
91 // thread hop, but in other implementations (e.g. Chrome) it will be called
92 // directly from OnIncomingCapturedFrame.
93 // TODO(tommi): Remove this workaround when we've updated the WebRTC capturers
94 // to follow the same contract.
95 void SignalFrameCapturedOnStartThread(const webrtc::VideoFrame& frame);
96
97 rtc::scoped_ptr<WebRtcVcmFactoryInterface> factory_;
98 webrtc::VideoCaptureModule* module_;
99 int captured_frames_;
100 std::vector<uint8_t> capture_buffer_;
101 rtc::Thread* start_thread_; // Set in Start(), unset in Stop();
102
103 rtc::scoped_ptr<rtc::AsyncInvoker> async_invoker_;
104 };
105
106 struct WebRtcCapturedFrame : public CapturedFrame {
107 public:
108 WebRtcCapturedFrame(const webrtc::VideoFrame& frame,
109 void* buffer,
110 size_t length);
111 };
112
113 } // namespace cricket
114
115 #endif // HAVE_WEBRTC_VIDEO
116 #endif // TALK_MEDIA_WEBRTCVIDEOCAPTURER_H_
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