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// 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_api.h"
#include "base/base64.h"
#include "base/callback.h"
#include "base/rand_util.h"
#include "base/strings/utf_string_conversions.h"
#include "content/renderer/media/media_stream_audio_source.h"
#include "content/renderer/media/media_stream_video_capturer_source.h"
#include "content/renderer/media/media_stream_video_track.h"
#include "media/base/audio_capturer_source.h"
#include "media/base/video_capturer_source.h"
#include "third_party/WebKit/public/platform/WebMediaDeviceInfo.h"
#include "third_party/WebKit/public/platform/WebMediaStream.h"
#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
#include "third_party/WebKit/public/platform/WebURL.h"
#include "third_party/WebKit/public/web/WebMediaStreamRegistry.h"
#include "url/gurl.h"
namespace content {
namespace {
blink::WebString MakeTrackId() {
std::string track_id;
base::Base64Encode(base::RandBytesAsString(64), &track_id);
return base::UTF8ToUTF16(track_id);
}
} // namespace
bool AddVideoTrackToMediaStream(
scoped_ptr<media::VideoCapturerSource> source,
bool is_remote,
bool is_readonly,
const std::string& media_stream_url) {
blink::WebMediaStream stream =
blink::WebMediaStreamRegistry::lookupMediaStreamDescriptor(
GURL(media_stream_url));
if (stream.isNull()) {
LOG(ERROR) << "Stream not found";
return false;
}
blink::WebString track_id = MakeTrackId();
blink::WebMediaStreamSource webkit_source;
scoped_ptr<MediaStreamVideoSource> media_stream_source(
new MediaStreamVideoCapturerSource(
MediaStreamSource::SourceStoppedCallback(),
source.Pass()));
webkit_source.initialize(
track_id,
blink::WebMediaStreamSource::TypeVideo,
track_id,
is_remote,
is_readonly);
webkit_source.setExtraData(media_stream_source.get());
blink::WebMediaConstraints constraints;
constraints.initialize();
stream.addTrack(MediaStreamVideoTrack::CreateVideoTrack(
media_stream_source.release(),
constraints,
MediaStreamVideoSource::ConstraintsCallback(),
true));
return true;
}
bool AddAudioTrackToMediaStream(
scoped_refptr<media::AudioCapturerSource> source,
const media::AudioParameters& params,
bool is_remote,
bool is_readonly,
const std::string& media_stream_url) {
DCHECK(params.IsValid()) << params.AsHumanReadableString();
blink::WebMediaStream stream =
blink::WebMediaStreamRegistry::lookupMediaStreamDescriptor(
GURL(media_stream_url));
if (stream.isNull()) {
LOG(ERROR) << "Stream not found";
return false;
}
blink::WebMediaStreamSource webkit_source;
blink::WebString track_id = MakeTrackId();
webkit_source.initialize(
track_id,
blink::WebMediaStreamSource::TypeAudio,
track_id,
is_remote,
is_readonly);
MediaStreamAudioSource* audio_source(
new MediaStreamAudioSource(
-1,
StreamDeviceInfo(),
MediaStreamSource::SourceStoppedCallback(),
RenderThreadImpl::current()->GetPeerConnectionDependencyFactory()));
blink::WebMediaConstraints constraints;
constraints.initialize();
scoped_refptr<WebRtcAudioCapturer> capturer(
WebRtcAudioCapturer::CreateCapturer(-1, StreamDeviceInfo(), constraints,
nullptr, audio_source));
capturer->SetCapturerSource(source, params);
audio_source->SetAudioCapturer(capturer);
webkit_source.setExtraData(audio_source);
blink::WebMediaStreamTrack web_media_audio_track;
web_media_audio_track.initialize(webkit_source);
RenderThreadImpl::current()->GetPeerConnectionDependencyFactory()->
CreateLocalAudioTrack(web_media_audio_track);
stream.addTrack(web_media_audio_track);
return true;
}
} // namespace content
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