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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "content/renderer/media/media_recorder_handler.h" |
| 6 |
| 7 #include "base/bind.h" |
| 8 #include "base/location.h" |
| 9 #include "base/logging.h" |
| 10 #include "content/renderer/media/video_track_recorder.h" |
| 11 #include "media/base/bind_to_current_loop.h" |
| 12 #include "media/capture/webm_muxer.h" |
| 13 #include "third_party/WebKit/public/platform/WebString.h" |
| 14 |
| 15 namespace content { |
| 16 |
| 17 MediaRecorderHandler::MediaRecorderHandler() |
| 18 : recording_(false), client_(nullptr), weak_factory_(this) { |
| 19 DVLOG(3) << __FUNCTION__; |
| 20 } |
| 21 |
| 22 MediaRecorderHandler::~MediaRecorderHandler() { |
| 23 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 24 // Send a |last_in_slice| to our |client_|. |
| 25 if (client_) |
| 26 client_->writeData(nullptr, 0u, true); |
| 27 } |
| 28 |
| 29 bool MediaRecorderHandler::canSupportMimeType( |
| 30 const blink::WebString& mimeType) { |
| 31 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 32 // TODO(mcasas): For the time being only "video/vp8" is supported. |
| 33 return mimeType.utf8().compare("video/vp8") == 0; |
| 34 } |
| 35 |
| 36 bool MediaRecorderHandler::initialize( |
| 37 blink::WebMediaRecorderHandlerClient* client, |
| 38 const blink::WebMediaStream& media_stream, |
| 39 const blink::WebString& mimeType) { |
| 40 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 41 if (!canSupportMimeType(mimeType)) { |
| 42 DLOG(ERROR) << "Can't support type " << mimeType.utf8(); |
| 43 return false; |
| 44 } |
| 45 media_stream_ = media_stream; |
| 46 DCHECK(client); |
| 47 client_ = client; |
| 48 |
| 49 return true; |
| 50 } |
| 51 |
| 52 bool MediaRecorderHandler::start() { |
| 53 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 54 DCHECK(!recording_); |
| 55 return start(0); |
| 56 } |
| 57 |
| 58 bool MediaRecorderHandler::start(int timeslice) { |
| 59 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 60 DCHECK(!recording_); |
| 61 DCHECK(!media_stream_.isNull()); |
| 62 |
| 63 webm_muxer_.reset(new media::WebmMuxer(media::BindToCurrentLoop(base::Bind( |
| 64 &MediaRecorderHandler::WriteData, weak_factory_.GetWeakPtr())))); |
| 65 DCHECK(webm_muxer_); |
| 66 |
| 67 blink::WebVector<blink::WebMediaStreamTrack> video_tracks; |
| 68 media_stream_.videoTracks(video_tracks); |
| 69 |
| 70 if (video_tracks.isEmpty()) { |
| 71 // TODO(mcasas): Add audio_tracks and update the code in this function |
| 72 // correspondingly, see http://crbug.com/528519. As of now, only video |
| 73 // tracks are supported. |
| 74 LOG(WARNING) << "Recording no video tracks is not implemented"; |
| 75 return false; |
| 76 } |
| 77 // TODO(mcasas): The muxer API supports only one video track. Extend it to |
| 78 // several video tracks, see http://crbug.com/528523. |
| 79 LOG_IF(WARNING, video_tracks.size() > 1u) << "Recording multiple video" |
| 80 << " tracks is not implemented. Only recording first video track."; |
| 81 const blink::WebMediaStreamTrack& video_track = video_tracks[0]; |
| 82 if (video_track.isNull()) |
| 83 return false; |
| 84 |
| 85 const VideoTrackRecorder::OnEncodedVideoCB on_encoded_video_cb = |
| 86 base::Bind(&media::WebmMuxer::OnEncodedVideo, |
| 87 base::Unretained(webm_muxer_.get())); |
| 88 |
| 89 video_recorders_.push_back(new VideoTrackRecorder(video_track, |
| 90 on_encoded_video_cb)); |
| 91 |
| 92 recording_ = true; |
| 93 return true; |
| 94 } |
| 95 |
| 96 void MediaRecorderHandler::stop() { |
| 97 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 98 DCHECK(recording_); |
| 99 |
| 100 recording_ = false; |
| 101 video_recorders_.clear(); |
| 102 webm_muxer_.reset(NULL); |
| 103 } |
| 104 |
| 105 void MediaRecorderHandler::pause() { |
| 106 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 107 DCHECK(recording_); |
| 108 recording_ = false; |
| 109 NOTIMPLEMENTED(); |
| 110 } |
| 111 |
| 112 void MediaRecorderHandler::resume() { |
| 113 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 114 DCHECK(!recording_); |
| 115 recording_ = true; |
| 116 NOTIMPLEMENTED(); |
| 117 } |
| 118 |
| 119 void MediaRecorderHandler::WriteData(const base::StringPiece& data) { |
| 120 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
| 121 client_->writeData(data.data(), data.size(), false /* lastInSlice */); |
| 122 } |
| 123 |
| 124 void MediaRecorderHandler::OnVideoFrameForTesting( |
| 125 const scoped_refptr<media::VideoFrame>& frame, |
| 126 const base::TimeTicks& timestamp) { |
| 127 for (auto* recorder : video_recorders_) |
| 128 recorder->OnVideoFrameForTesting(frame, timestamp); |
| 129 } |
| 130 |
| 131 } // namespace content |
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