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// Copyright (c) 2012 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/renderer/media/media_stream_center.h"
#include <string>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "content/common/media/media_stream_messages.h"
#include "content/public/common/content_switches.h"
#include "content/public/renderer/render_thread.h"
#include "content/renderer/media/media_stream_dependency_factory.h"
#include "content/renderer/media/media_stream_extra_data.h"
#include "content/renderer/media/media_stream_source_extra_data.h"
#include "content/renderer/media/media_stream_track_extra_data.h"
#include "content/renderer/render_view_impl.h"
#include "third_party/WebKit/public/platform/WebMediaStream.h"
#include "third_party/WebKit/public/platform/WebMediaStreamCenterClient.h"
#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
#include "third_party/WebKit/public/platform/WebMediaStreamTrackSourcesRequest.h"
#include "third_party/WebKit/public/platform/WebSourceInfo.h"
#include "third_party/WebKit/public/platform/WebVector.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/libjingle/source/talk/app/webrtc/jsep.h"
using blink::WebFrame;
using blink::WebView;
namespace content {
MediaStreamCenter::MediaStreamCenter(blink::WebMediaStreamCenterClient* client,
MediaStreamDependencyFactory* factory)
: rtc_factory_(factory), next_request_id_(0) {}
MediaStreamCenter::~MediaStreamCenter() {}
bool MediaStreamCenter::getMediaStreamTrackSources(
const blink::WebMediaStreamTrackSourcesRequest& request) {
if (!CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableDeviceEnumeration)) {
int request_id = next_request_id_++;
requests_.insert(std::make_pair(request_id, request));
RenderThread::Get()->Send(new MediaStreamHostMsg_GetSources(
request_id, GURL(request.origin().utf8())));
return true;
}
return false;
}
void MediaStreamCenter::didCreateMediaStreamTrack(
const blink::WebMediaStreamTrack& track) {
if (!rtc_factory_)
return;
rtc_factory_->CreateNativeMediaStreamTrack(track);
}
void MediaStreamCenter::didEnableMediaStreamTrack(
const blink::WebMediaStreamTrack& track) {
webrtc::MediaStreamTrackInterface* native_track =
MediaStreamDependencyFactory::GetNativeMediaStreamTrack(track);
if (native_track)
native_track->set_enabled(true);
}
void MediaStreamCenter::didDisableMediaStreamTrack(
const blink::WebMediaStreamTrack& track) {
webrtc::MediaStreamTrackInterface* native_track =
MediaStreamDependencyFactory::GetNativeMediaStreamTrack(track);
if (native_track)
native_track->set_enabled(false);
}
bool MediaStreamCenter::didStopMediaStreamTrack(
const blink::WebMediaStreamTrack& track) {
DVLOG(1) << "MediaStreamCenter::didStopMediaStreamTrack";
blink::WebMediaStreamSource source = track.source();
MediaStreamSourceExtraData* extra_data =
static_cast<MediaStreamSourceExtraData*>(source.extraData());
if (!extra_data) {
DVLOG(1) << "didStopMediaStreamTrack called on a remote track.";
return false;
}
extra_data->OnLocalSourceStop();
return true;
}
void MediaStreamCenter::didStopLocalMediaStream(
const blink::WebMediaStream& stream) {
DVLOG(1) << "MediaStreamCenter::didStopLocalMediaStream";
MediaStreamExtraData* extra_data =
static_cast<MediaStreamExtraData*>(stream.extraData());
if (!extra_data) {
NOTREACHED();
return;
}
// TODO(perkj): MediaStream::Stop is being deprecated. But for the moment we
// need to support the old behavior and the new. Since we only create one
// source object per actual device- we need to fake stopping a
// MediaStreamTrack by disabling it if the same device is used as source by
// multiple tracks. Note that disabling a track here, don't affect the
// enabled property in JS.
blink::WebVector<blink::WebMediaStreamTrack> audio_tracks;
stream.audioTracks(audio_tracks);
for (size_t i = 0; i < audio_tracks.size(); ++i)
didDisableMediaStreamTrack(audio_tracks[i]);
blink::WebVector<blink::WebMediaStreamTrack> video_tracks;
stream.videoTracks(video_tracks);
for (size_t i = 0; i < video_tracks.size(); ++i)
didDisableMediaStreamTrack(video_tracks[i]);
extra_data->OnLocalStreamStop();
}
void MediaStreamCenter::didCreateMediaStream(
blink::WebMediaStream& stream) {
if (!rtc_factory_)
return;
rtc_factory_->CreateNativeLocalMediaStream(&stream);
}
bool MediaStreamCenter::didAddMediaStreamTrack(
const blink::WebMediaStream& stream,
const blink::WebMediaStreamTrack& track) {
if (!rtc_factory_)
return false;
return rtc_factory_->AddNativeMediaStreamTrack(stream, track);
}
bool MediaStreamCenter::didRemoveMediaStreamTrack(
const blink::WebMediaStream& stream,
const blink::WebMediaStreamTrack& track) {
if (!rtc_factory_)
return false;
return rtc_factory_->RemoveNativeMediaStreamTrack(stream, track);
}
bool MediaStreamCenter::OnControlMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(MediaStreamCenter, message)
IPC_MESSAGE_HANDLER(MediaStreamMsg_GetSourcesACK,
OnGetSourcesComplete)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void MediaStreamCenter::OnGetSourcesComplete(
int request_id,
const content::StreamDeviceInfoArray& devices) {
RequestMap::iterator request_it = requests_.find(request_id);
DCHECK(request_it != requests_.end());
blink::WebVector<blink::WebSourceInfo> sourceInfos(devices.size());
for (size_t i = 0; i < devices.size(); ++i) {
const MediaStreamDevice& device = devices[i].device;
DCHECK(device.type == MEDIA_DEVICE_AUDIO_CAPTURE ||
device.type == MEDIA_DEVICE_VIDEO_CAPTURE);
blink::WebSourceInfo::VideoFacingMode video_facing;
switch (device.video_facing) {
case MEDIA_VIDEO_FACING_USER:
video_facing = blink::WebSourceInfo::VideoFacingModeUser;
break;
case MEDIA_VIDEO_FACING_ENVIRONMENT:
video_facing = blink::WebSourceInfo::VideoFacingModeEnvironment;
break;
default:
video_facing = blink::WebSourceInfo::VideoFacingModeNone;
}
sourceInfos[i]
.initialize(blink::WebString::fromUTF8(device.id),
device.type == MEDIA_DEVICE_AUDIO_CAPTURE
? blink::WebSourceInfo::SourceKindAudio
: blink::WebSourceInfo::SourceKindVideo,
blink::WebString::fromUTF8(device.name),
video_facing);
}
request_it->second.requestSucceeded(sourceInfos);
}
} // namespace content
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