| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/public/renderer/media_stream_utils.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "base/callback.h" |
| #include "base/guid.h" |
| #include "base/rand_util.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "content/renderer/media/stream/external_media_stream_audio_source.h" |
| #include "content/renderer/media/stream/media_stream_constraints_util.h" |
| #include "content/renderer/media/stream/media_stream_video_capturer_source.h" |
| #include "content/renderer/media/stream/media_stream_video_source.h" |
| #include "content/renderer/media/stream/media_stream_video_track.h" |
| #include "media/base/audio_capturer_source.h" |
| #include "media/capture/video_capturer_source.h" |
| #include "third_party/blink/public/platform/web_media_stream.h" |
| #include "third_party/blink/public/platform/web_media_stream_source.h" |
| |
| namespace content { |
| |
| bool AddVideoTrackToMediaStream( |
| std::unique_ptr<media::VideoCapturerSource> video_source, |
| bool is_remote, |
| blink::WebMediaStream* web_media_stream) { |
| DCHECK(video_source.get()); |
| if (!web_media_stream || web_media_stream->IsNull()) { |
| DLOG(ERROR) << "WebMediaStream is null"; |
| return false; |
| } |
| |
| media::VideoCaptureFormats preferred_formats = |
| video_source->GetPreferredFormats(); |
| MediaStreamVideoSource* const media_stream_source = |
| new MediaStreamVideoCapturerSource( |
| blink::PlatformMediaStreamSource::SourceStoppedCallback(), |
| std::move(video_source)); |
| const blink::WebString track_id = |
| blink::WebString::FromUTF8(base::GenerateGUID()); |
| blink::WebMediaStreamSource web_media_stream_source; |
| web_media_stream_source.Initialize( |
| track_id, blink::WebMediaStreamSource::kTypeVideo, track_id, is_remote); |
| // Takes ownership of |media_stream_source|. |
| web_media_stream_source.SetPlatformSource( |
| base::WrapUnique(media_stream_source)); |
| web_media_stream_source.SetCapabilities(ComputeCapabilitiesForVideoSource( |
| track_id, preferred_formats, |
| media::VideoFacingMode::MEDIA_VIDEO_FACING_NONE, |
| false /* is_device_capture */)); |
| web_media_stream->AddTrack(MediaStreamVideoTrack::CreateVideoTrack( |
| media_stream_source, MediaStreamVideoSource::ConstraintsCallback(), |
| true)); |
| return true; |
| } |
| |
| bool AddAudioTrackToMediaStream( |
| scoped_refptr<media::AudioCapturerSource> audio_source, |
| int sample_rate, |
| media::ChannelLayout channel_layout, |
| int frames_per_buffer, |
| bool is_remote, |
| blink::WebMediaStream* web_media_stream) { |
| DCHECK(audio_source.get()); |
| if (!web_media_stream || web_media_stream->IsNull()) { |
| DLOG(ERROR) << "WebMediaStream is null"; |
| return false; |
| } |
| |
| const media::AudioParameters params( |
| media::AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, |
| sample_rate, frames_per_buffer); |
| if (!params.IsValid()) { |
| DLOG(ERROR) << "Invalid audio parameters."; |
| return false; |
| } |
| |
| blink::WebMediaStreamSource web_media_stream_source; |
| const blink::WebString track_id = |
| blink::WebString::FromUTF8(base::GenerateGUID()); |
| web_media_stream_source.Initialize( |
| track_id, blink::WebMediaStreamSource::kTypeAudio, track_id, is_remote); |
| MediaStreamAudioSource* const media_stream_source = |
| new ExternalMediaStreamAudioSource(std::move(audio_source), sample_rate, |
| channel_layout, frames_per_buffer, |
| is_remote); |
| // Takes ownership of |media_stream_source|. |
| web_media_stream_source.SetPlatformSource( |
| base::WrapUnique(media_stream_source)); |
| |
| blink::WebMediaStreamSource::Capabilities capabilities; |
| capabilities.device_id = track_id; |
| capabilities.echo_cancellation = std::vector<bool>({false}); |
| capabilities.auto_gain_control = std::vector<bool>({false}); |
| capabilities.noise_suppression = std::vector<bool>({false}); |
| capabilities.sample_size = { |
| media::SampleFormatToBitsPerChannel(media::kSampleFormatS16), // min |
| media::SampleFormatToBitsPerChannel(media::kSampleFormatS16) // max |
| }; |
| web_media_stream_source.SetCapabilities(capabilities); |
| |
| blink::WebMediaStreamTrack web_media_stream_track; |
| web_media_stream_track.Initialize(web_media_stream_source); |
| if (!media_stream_source->ConnectToTrack(web_media_stream_track)) |
| return false; |
| web_media_stream->AddTrack(web_media_stream_track); |
| return true; |
| } |
| |
| void RequestRefreshFrameFromVideoTrack( |
| const blink::WebMediaStreamTrack& video_track) { |
| if (video_track.IsNull()) |
| return; |
| MediaStreamVideoSource* const source = |
| MediaStreamVideoSource::GetVideoSource(video_track.Source()); |
| if (source) |
| source->RequestRefreshFrame(); |
| } |
| |
| } // namespace content |