| // 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/browser/renderer_host/media/media_stream_manager.h" |
| |
| #include <list> |
| #include <vector> |
| |
| #include "base/bind.h" |
| #include "base/command_line.h" |
| #include "base/compiler_specific.h" |
| #include "base/logging.h" |
| #include "base/rand_util.h" |
| #include "base/run_loop.h" |
| #include "base/threading/thread.h" |
| #include "content/browser/renderer_host/media/audio_input_device_manager.h" |
| #include "content/browser/renderer_host/media/device_request_message_filter.h" |
| #include "content/browser/renderer_host/media/media_stream_requester.h" |
| #include "content/browser/renderer_host/media/media_stream_ui_proxy.h" |
| #include "content/browser/renderer_host/media/video_capture_manager.h" |
| #include "content/browser/renderer_host/media/web_contents_capture_util.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/content_browser_client.h" |
| #include "content/public/browser/media_device_id.h" |
| #include "content/public/browser/media_observer.h" |
| #include "content/public/browser/media_request_state.h" |
| #include "content/public/common/content_switches.h" |
| #include "content/public/common/media_stream_request.h" |
| #include "media/audio/audio_manager_base.h" |
| #include "media/audio/audio_parameters.h" |
| #include "media/base/channel_layout.h" |
| #include "url/gurl.h" |
| |
| #if defined(OS_WIN) |
| #include "base/win/scoped_com_initializer.h" |
| #endif |
| |
| namespace content { |
| |
| namespace { |
| // Creates a random label used to identify requests. |
| std::string RandomLabel() { |
| // An earlier PeerConnection spec, |
| // http://dev.w3.org/2011/webrtc/editor/webrtc.html, specified the |
| // MediaStream::label alphabet as containing 36 characters from |
| // range: U+0021, U+0023 to U+0027, U+002A to U+002B, U+002D to U+002E, |
| // U+0030 to U+0039, U+0041 to U+005A, U+005E to U+007E. |
| // Here we use a safe subset. |
| static const char kAlphabet[] = "0123456789" |
| "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
| |
| std::string label(36, ' '); |
| for (size_t i = 0; i < label.size(); ++i) { |
| int random_char = base::RandGenerator(sizeof(kAlphabet) - 1); |
| label[i] = kAlphabet[random_char]; |
| } |
| return label; |
| } |
| |
| void ParseStreamType(const StreamOptions& options, |
| MediaStreamType* audio_type, |
| MediaStreamType* video_type) { |
| *audio_type = MEDIA_NO_SERVICE; |
| *video_type = MEDIA_NO_SERVICE; |
| if (options.audio_requested) { |
| std::string audio_stream_source; |
| bool mandatory = false; |
| if (options.GetFirstAudioConstraintByName(kMediaStreamSource, |
| &audio_stream_source, |
| &mandatory)) { |
| DCHECK(mandatory); |
| // This is tab or screen capture. |
| if (audio_stream_source == kMediaStreamSourceTab) { |
| *audio_type = content::MEDIA_TAB_AUDIO_CAPTURE; |
| } else if (audio_stream_source == kMediaStreamSourceSystem) { |
| *audio_type = content::MEDIA_LOOPBACK_AUDIO_CAPTURE; |
| } |
| } else { |
| // This is normal audio device capture. |
| *audio_type = content::MEDIA_DEVICE_AUDIO_CAPTURE; |
| } |
| } |
| if (options.video_requested) { |
| std::string video_stream_source; |
| bool mandatory = false; |
| if (options.GetFirstVideoConstraintByName(kMediaStreamSource, |
| &video_stream_source, |
| &mandatory)) { |
| DCHECK(mandatory); |
| // This is tab or screen capture. |
| if (video_stream_source == kMediaStreamSourceTab) { |
| *video_type = content::MEDIA_TAB_VIDEO_CAPTURE; |
| } else if (video_stream_source == kMediaStreamSourceScreen) { |
| *video_type = content::MEDIA_DESKTOP_VIDEO_CAPTURE; |
| } else if (video_stream_source == kMediaStreamSourceDesktop) { |
| *video_type = content::MEDIA_DESKTOP_VIDEO_CAPTURE; |
| } |
| } else { |
| // This is normal video device capture. |
| *video_type = content::MEDIA_DEVICE_VIDEO_CAPTURE; |
| } |
| } |
| } |
| |
| // Needed for MediaStreamManager::GenerateStream below. |
| std::string ReturnEmptySalt() { |
| return std::string(); |
| } |
| |
| } // namespace |
| |
| |
| // MediaStreamManager::DeviceRequest represents a request to either enumerate |
| // available devices or open one or more devices. |
| // TODO(perkj): MediaStreamManager still needs refactoring. I propose we create |
| // several subclasses of DeviceRequest and move some of the responsibility of |
| // the MediaStreamManager to the subclasses to get rid of the way too many if |
| // statements in MediaStreamManager. |
| class MediaStreamManager::DeviceRequest { |
| public: |
| DeviceRequest(MediaStreamRequester* requester, |
| int requesting_process_id, |
| int requesting_view_id, |
| int page_request_id, |
| const GURL& security_origin, |
| MediaStreamRequestType request_type, |
| const StreamOptions& options, |
| const ResourceContext::SaltCallback& salt_callback) |
| : requester(requester), |
| requesting_process_id(requesting_process_id), |
| requesting_view_id(requesting_view_id), |
| page_request_id(page_request_id), |
| security_origin(security_origin), |
| request_type(request_type), |
| options(options), |
| salt_callback(salt_callback), |
| state_(NUM_MEDIA_TYPES, MEDIA_REQUEST_STATE_NOT_REQUESTED), |
| audio_type_(MEDIA_NO_SERVICE), |
| video_type_(MEDIA_NO_SERVICE) { |
| } |
| |
| ~DeviceRequest() {} |
| |
| void SetAudioType(MediaStreamType audio_type) { |
| DCHECK(IsAudioMediaType(audio_type) || audio_type == MEDIA_NO_SERVICE); |
| audio_type_ = audio_type; |
| } |
| |
| MediaStreamType audio_type() const { return audio_type_; } |
| |
| void SetVideoType(MediaStreamType video_type) { |
| DCHECK(IsVideoMediaType(video_type) || video_type == MEDIA_NO_SERVICE); |
| video_type_ = video_type; |
| } |
| |
| MediaStreamType video_type() const { return video_type_; } |
| |
| // Creates a MediaStreamRequest object that is used by this request when UI |
| // is asked for permission and device selection. |
| void CreateUIRequest(const std::string& requested_audio_device_id, |
| const std::string& requested_video_device_id) { |
| DCHECK(!ui_request_); |
| ui_request_.reset(new MediaStreamRequest(requesting_process_id, |
| requesting_view_id, |
| page_request_id, |
| security_origin, |
| request_type, |
| requested_audio_device_id, |
| requested_video_device_id, |
| audio_type_, |
| video_type_)); |
| } |
| |
| // Creates a tab capture specific MediaStreamRequest object that is used by |
| // this request when UI is asked for permission and device selection. |
| void CreateTabCatureUIRequest(int target_render_process_id, |
| int target_render_view_id, |
| const std::string& tab_capture_id) { |
| DCHECK(!ui_request_); |
| ui_request_.reset(new MediaStreamRequest(target_render_process_id, |
| target_render_view_id, |
| page_request_id, |
| security_origin, |
| request_type, |
| "", |
| "", |
| audio_type_, |
| video_type_)); |
| ui_request_->tab_capture_device_id = tab_capture_id; |
| } |
| |
| const MediaStreamRequest* UIRequest() const { return ui_request_.get(); } |
| |
| // Update the request state and notify observers. |
| void SetState(MediaStreamType stream_type, MediaRequestState new_state) { |
| if (stream_type == NUM_MEDIA_TYPES) { |
| for (int i = MEDIA_NO_SERVICE + 1; i < NUM_MEDIA_TYPES; ++i) { |
| const MediaStreamType stream_type = static_cast<MediaStreamType>(i); |
| state_[stream_type] = new_state; |
| } |
| } else { |
| state_[stream_type] = new_state; |
| } |
| |
| MediaObserver* media_observer = |
| GetContentClient()->browser()->GetMediaObserver(); |
| if (!media_observer) |
| return; |
| |
| // If |ui_request_| doesn't exist, it means that the request has not yet |
| // been setup fully and there are no valid observers. |
| if (!ui_request_) |
| return; |
| |
| // If we appended a device_id scheme, we want to remove it when notifying |
| // observers which may be in different modules since this scheme is only |
| // used internally within the content module. |
| std::string device_id = |
| WebContentsCaptureUtil::StripWebContentsDeviceScheme( |
| ui_request_->tab_capture_device_id); |
| |
| media_observer->OnMediaRequestStateChanged( |
| ui_request_->render_process_id, ui_request_->render_view_id, |
| ui_request_->page_request_id, |
| MediaStreamDevice(stream_type, device_id, device_id), new_state); |
| } |
| |
| MediaRequestState state(MediaStreamType stream_type) const { |
| return state_[stream_type]; |
| } |
| |
| MediaStreamRequester* const requester; // Can be NULL. |
| |
| |
| // The render process id that requested this stream to be generated and that |
| // will receive a handle to the MediaStream. This may be different from |
| // MediaStreamRequest::render_process_id which in the tab capture case |
| // specifies the target renderer from which audio and video is captured. |
| const int requesting_process_id; |
| |
| // The render view id that requested this stream to be generated and that |
| // will receive a handle to the MediaStream. This may be different from |
| // MediaStreamRequest::render_view_id which in the tab capture case |
| // specifies the target renderer from which audio and video is captured. |
| const int requesting_view_id; |
| |
| // An ID the render view provided to identify this request. |
| const int page_request_id; |
| |
| const GURL security_origin; |
| |
| const MediaStreamRequestType request_type; |
| |
| const StreamOptions options; |
| |
| ResourceContext::SaltCallback salt_callback; |
| |
| StreamDeviceInfoArray devices; |
| |
| // Callback to the requester which audio/video devices have been selected. |
| // It can be null if the requester has no interest to know the result. |
| // Currently it is only used by |DEVICE_ACCESS| type. |
| MediaStreamManager::MediaRequestResponseCallback callback; |
| |
| scoped_ptr<MediaStreamUIProxy> ui_proxy; |
| |
| private: |
| std::vector<MediaRequestState> state_; |
| scoped_ptr<MediaStreamRequest> ui_request_; |
| MediaStreamType audio_type_; |
| MediaStreamType video_type_; |
| }; |
| |
| MediaStreamManager::EnumerationCache::EnumerationCache() |
| : valid(false) { |
| } |
| |
| MediaStreamManager::EnumerationCache::~EnumerationCache() { |
| } |
| |
| MediaStreamManager::MediaStreamManager() |
| : audio_manager_(NULL), |
| monitoring_started_(false), |
| io_loop_(NULL), |
| use_fake_ui_(false) {} |
| |
| MediaStreamManager::MediaStreamManager(media::AudioManager* audio_manager) |
| : audio_manager_(audio_manager), |
| monitoring_started_(false), |
| io_loop_(NULL), |
| use_fake_ui_(false) { |
| DCHECK(audio_manager_); |
| memset(active_enumeration_ref_count_, 0, |
| sizeof(active_enumeration_ref_count_)); |
| |
| // Some unit tests create the MSM in the IO thread and assumes the |
| // initialization is done synchronously. |
| if (BrowserThread::CurrentlyOn(BrowserThread::IO)) { |
| InitializeDeviceManagersOnIOThread(); |
| } else { |
| BrowserThread::PostTask( |
| BrowserThread::IO, FROM_HERE, |
| base::Bind(&MediaStreamManager::InitializeDeviceManagersOnIOThread, |
| base::Unretained(this))); |
| } |
| } |
| |
| MediaStreamManager::~MediaStreamManager() { |
| DVLOG(1) << "~MediaStreamManager"; |
| DCHECK(requests_.empty()); |
| DCHECK(!device_thread_.get()); |
| } |
| |
| VideoCaptureManager* MediaStreamManager::video_capture_manager() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DCHECK(video_capture_manager_.get()); |
| return video_capture_manager_.get(); |
| } |
| |
| AudioInputDeviceManager* MediaStreamManager::audio_input_device_manager() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DCHECK(audio_input_device_manager_.get()); |
| return audio_input_device_manager_.get(); |
| } |
| |
| std::string MediaStreamManager::MakeMediaAccessRequest( |
| int render_process_id, |
| int render_view_id, |
| int page_request_id, |
| const StreamOptions& options, |
| const GURL& security_origin, |
| const MediaRequestResponseCallback& callback) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| |
| // TODO(perkj): The argument list with NULL parameters to DeviceRequest |
| // suggests that this is the wrong design. Can this be refactored? |
| DeviceRequest* request = new DeviceRequest(NULL, |
| render_process_id, |
| render_view_id, |
| page_request_id, |
| security_origin, |
| MEDIA_DEVICE_ACCESS, |
| options, |
| base::Bind(&ReturnEmptySalt)); |
| |
| const std::string& label = AddRequest(request); |
| |
| request->callback = callback; |
| // Post a task and handle the request asynchronously. The reason is that the |
| // requester won't have a label for the request until this function returns |
| // and thus can not handle a response. Using base::Unretained is safe since |
| // MediaStreamManager is deleted on the UI thread, after the IO thread has |
| // been stopped. |
| BrowserThread::PostTask( |
| BrowserThread::IO, FROM_HERE, |
| base::Bind(&MediaStreamManager::SetupRequest, |
| base::Unretained(this), label)); |
| return label; |
| } |
| |
| void MediaStreamManager::GenerateStream(MediaStreamRequester* requester, |
| int render_process_id, |
| int render_view_id, |
| const ResourceContext::SaltCallback& sc, |
| int page_request_id, |
| const StreamOptions& options, |
| const GURL& security_origin) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DVLOG(1) << "GenerateStream()"; |
| if (CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kUseFakeUIForMediaStream)) { |
| UseFakeUI(scoped_ptr<FakeMediaStreamUIProxy>()); |
| } |
| |
| DeviceRequest* request = new DeviceRequest(requester, |
| render_process_id, |
| render_view_id, |
| page_request_id, |
| security_origin, |
| MEDIA_GENERATE_STREAM, |
| options, |
| sc); |
| |
| const std::string& label = AddRequest(request); |
| |
| // Post a task and handle the request asynchronously. The reason is that the |
| // requester won't have a label for the request until this function returns |
| // and thus can not handle a response. Using base::Unretained is safe since |
| // MediaStreamManager is deleted on the UI thread, after the IO thread has |
| // been stopped. |
| BrowserThread::PostTask( |
| BrowserThread::IO, FROM_HERE, |
| base::Bind(&MediaStreamManager::SetupRequest, |
| base::Unretained(this), label)); |
| } |
| |
| void MediaStreamManager::CancelRequest(int render_process_id, |
| int render_view_id, |
| int page_request_id) { |
| for (DeviceRequests::const_iterator request_it = requests_.begin(); |
| request_it != requests_.end(); ++request_it) { |
| const DeviceRequest* request = request_it->second; |
| if (request->requesting_process_id == render_process_id && |
| request->requesting_view_id == render_view_id && |
| request->page_request_id == page_request_id) { |
| CancelRequest(request_it->first); |
| return; |
| } |
| } |
| NOTREACHED(); |
| } |
| |
| void MediaStreamManager::CancelRequest(const std::string& label) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DVLOG(1) << "CancelRequest({label = " << label << "})"; |
| DeviceRequest* request = FindRequest(label); |
| if (!request) { |
| // The request does not exist. |
| LOG(ERROR) << "The request with label = " << label << " does not exist."; |
| return; |
| } |
| if (request->request_type == MEDIA_ENUMERATE_DEVICES) { |
| DeleteRequest(label); |
| return; |
| } |
| |
| // This is a request for opening one or more devices. |
| for (StreamDeviceInfoArray::iterator device_it = request->devices.begin(); |
| device_it != request->devices.end(); ++device_it) { |
| MediaRequestState state = request->state(device_it->device.type); |
| // If we have not yet requested the device to be opened - just ignore it. |
| if (state != MEDIA_REQUEST_STATE_OPENING && |
| state != MEDIA_REQUEST_STATE_DONE) { |
| continue; |
| } |
| // Stop the opening/opened devices of the requests. |
| CloseDevice(device_it->device.type, device_it->session_id); |
| } |
| |
| // Cancel the request if still pending at UI side. |
| request->SetState(NUM_MEDIA_TYPES, MEDIA_REQUEST_STATE_CLOSING); |
| DeleteRequest(label); |
| } |
| |
| void MediaStreamManager::CancelAllRequests(int render_process_id) { |
| DeviceRequests::iterator request_it = requests_.begin(); |
| while (request_it != requests_.end()) { |
| if (request_it->second->requesting_process_id != render_process_id) { |
| ++request_it; |
| continue; |
| } |
| |
| std::string label = request_it->first; |
| ++request_it; |
| CancelRequest(label); |
| } |
| } |
| |
| void MediaStreamManager::StopStreamDevice(int render_process_id, |
| int render_view_id, |
| const std::string& device_id) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DVLOG(1) << "StopStreamDevice({render_view_id = " << render_view_id << "} " |
| << ", {device_id = " << device_id << "})"; |
| // Find the first request for this |render_process_id| and |render_view_id| |
| // of type MEDIA_GENERATE_STREAM that has requested to use |device_id| and |
| // stop it. |
| for (DeviceRequests::iterator request_it = requests_.begin(); |
| request_it != requests_.end(); ++request_it) { |
| DeviceRequest* request = request_it->second; |
| if (request->requesting_process_id != render_process_id || |
| request->requesting_view_id != render_view_id || |
| request->request_type != MEDIA_GENERATE_STREAM) { |
| continue; |
| } |
| |
| StreamDeviceInfoArray& devices = request->devices; |
| for (StreamDeviceInfoArray::iterator device_it = devices.begin(); |
| device_it != devices.end(); ++device_it) { |
| if (device_it->device.id == device_id) { |
| StopDevice(device_it->device.type, device_it->session_id); |
| return; |
| } |
| } |
| } |
| } |
| |
| void MediaStreamManager::StopDevice(MediaStreamType type, int session_id) { |
| DVLOG(1) << "StopDevice" |
| << "{type = " << type << "}" |
| << "{session_id = " << session_id << "}"; |
| DeviceRequests::iterator request_it = requests_.begin(); |
| while (request_it != requests_.end()) { |
| DeviceRequest* request = request_it->second; |
| StreamDeviceInfoArray* devices = &request->devices; |
| StreamDeviceInfoArray::iterator device_it = devices->begin(); |
| while (device_it != devices->end()) { |
| if (device_it->device.type != type || |
| device_it->session_id != session_id) { |
| ++device_it; |
| continue; |
| } |
| if (request->state(type) == MEDIA_REQUEST_STATE_DONE) |
| CloseDevice(type, session_id); |
| device_it = devices->erase(device_it); |
| } |
| // If this request doesn't have any active devices, remove the request. |
| if (devices->empty()) { |
| std::string label = request_it->first; |
| ++request_it; |
| DeleteRequest(label); |
| } else { |
| ++request_it; |
| } |
| } |
| } |
| |
| void MediaStreamManager::CloseDevice(MediaStreamType type, int session_id) { |
| DVLOG(1) << "CloseDevice(" |
| << "{type = " << type << "} " |
| << "{session_id = " << session_id << "})"; |
| GetDeviceManager(type)->Close(session_id); |
| |
| for (DeviceRequests::iterator request_it = requests_.begin(); |
| request_it != requests_.end() ; ++request_it) { |
| StreamDeviceInfoArray* devices = &request_it->second->devices; |
| for (StreamDeviceInfoArray::iterator device_it = devices->begin(); |
| device_it != devices->end(); ++device_it) { |
| if (device_it->session_id == session_id && |
| device_it->device.type == type) { |
| // Notify observers that this device is being closed. |
| // Note that only one device per type can be opened. |
| request_it->second->SetState(type, MEDIA_REQUEST_STATE_CLOSING); |
| } |
| } |
| } |
| } |
| |
| std::string MediaStreamManager::EnumerateDevices( |
| MediaStreamRequester* requester, |
| int render_process_id, |
| int render_view_id, |
| const ResourceContext::SaltCallback& sc, |
| int page_request_id, |
| MediaStreamType type, |
| const GURL& security_origin) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DCHECK(requester); |
| DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE || |
| type == MEDIA_DEVICE_VIDEO_CAPTURE); |
| |
| DeviceRequest* request = new DeviceRequest(requester, |
| render_process_id, |
| render_view_id, |
| page_request_id, |
| security_origin, |
| MEDIA_ENUMERATE_DEVICES, |
| StreamOptions(), |
| sc); |
| if (IsAudioMediaType(type)) |
| request->SetAudioType(type); |
| else if (IsVideoMediaType(type)) |
| request->SetVideoType(type); |
| |
| const std::string& label = AddRequest(request); |
| // Post a task and handle the request asynchronously. The reason is that the |
| // requester won't have a label for the request until this function returns |
| // and thus can not handle a response. Using base::Unretained is safe since |
| // MediaStreamManager is deleted on the UI thread, after the IO thread has |
| // been stopped. |
| BrowserThread::PostTask( |
| BrowserThread::IO, FROM_HERE, |
| base::Bind(&MediaStreamManager::DoEnumerateDevices, |
| base::Unretained(this), label)); |
| return label; |
| } |
| |
| void MediaStreamManager::DoEnumerateDevices(const std::string& label) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DeviceRequest* request = FindRequest(label); |
| if (!request) |
| return; // This can happen if the request has been canceled. |
| |
| MediaStreamType type; |
| EnumerationCache* cache; |
| if (request->audio_type() == MEDIA_DEVICE_AUDIO_CAPTURE) { |
| DCHECK_EQ(MEDIA_NO_SERVICE, request->video_type()); |
| type = MEDIA_DEVICE_AUDIO_CAPTURE; |
| cache = &audio_enumeration_cache_; |
| } else { |
| DCHECK_EQ(MEDIA_DEVICE_VIDEO_CAPTURE, request->video_type()); |
| type = MEDIA_DEVICE_VIDEO_CAPTURE; |
| cache = &video_enumeration_cache_; |
| } |
| |
| if (cache->valid) { |
| // Cached device list of this type exists. Just send it out. |
| request->SetState(type, MEDIA_REQUEST_STATE_REQUESTED); |
| request->devices = cache->devices; |
| FinalizeEnumerateDevices(label, request); |
| } else { |
| StartEnumeration(request); |
| } |
| DVLOG(1) << "Enumerate Devices ({label = " << label << "})"; |
| } |
| |
| void MediaStreamManager::OpenDevice(MediaStreamRequester* requester, |
| int render_process_id, |
| int render_view_id, |
| const ResourceContext::SaltCallback& sc, |
| int page_request_id, |
| const std::string& device_id, |
| MediaStreamType type, |
| const GURL& security_origin) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE || |
| type == MEDIA_DEVICE_VIDEO_CAPTURE); |
| DVLOG(1) << "OpenDevice ({page_request_id = " << page_request_id << "})"; |
| StreamOptions options; |
| if (IsAudioMediaType(type)) { |
| options.audio_requested = true; |
| options.mandatory_audio.push_back( |
| StreamOptions::Constraint(kMediaStreamSourceInfoId, device_id)); |
| } else if (IsVideoMediaType(type)) { |
| options.video_requested = true; |
| options.mandatory_video.push_back( |
| StreamOptions::Constraint(kMediaStreamSourceInfoId, device_id)); |
| } else { |
| NOTREACHED(); |
| } |
| DeviceRequest* request = new DeviceRequest(requester, |
| render_process_id, |
| render_view_id, |
| page_request_id, |
| security_origin, |
| MEDIA_OPEN_DEVICE, |
| options, |
| sc); |
| |
| const std::string& label = AddRequest(request); |
| // Post a task and handle the request asynchronously. The reason is that the |
| // requester won't have a label for the request until this function returns |
| // and thus can not handle a response. Using base::Unretained is safe since |
| // MediaStreamManager is deleted on the UI thread, after the IO thread has |
| // been stopped. |
| BrowserThread::PostTask( |
| BrowserThread::IO, FROM_HERE, |
| base::Bind(&MediaStreamManager::SetupRequest, |
| base::Unretained(this), label)); |
| } |
| |
| void MediaStreamManager::EnsureDeviceMonitorStarted() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| if (!monitoring_started_) |
| StartMonitoring(); |
| } |
| |
| void MediaStreamManager::StopRemovedDevices( |
| const StreamDeviceInfoArray& old_devices, |
| const StreamDeviceInfoArray& new_devices) { |
| DVLOG(1) << "StopRemovedDevices(" |
| << "{#old_devices = " << old_devices.size() << "} " |
| << "{#new_devices = " << new_devices.size() << "})"; |
| for (StreamDeviceInfoArray::const_iterator old_dev_it = old_devices.begin(); |
| old_dev_it != old_devices.end(); ++old_dev_it) { |
| bool device_found = false; |
| StreamDeviceInfoArray::const_iterator new_dev_it = new_devices.begin(); |
| for (; new_dev_it != new_devices.end(); ++new_dev_it) { |
| if (old_dev_it->device.id == new_dev_it->device.id) { |
| device_found = true; |
| break; |
| } |
| } |
| |
| if (!device_found) { |
| // A device has been removed. We need to check if it is used by a |
| // MediaStream and in that case cleanup and notify the render process. |
| StopRemovedDevice(old_dev_it->device); |
| } |
| } |
| } |
| |
| void MediaStreamManager::StopRemovedDevice(const MediaStreamDevice& device) { |
| std::vector<int> session_ids; |
| for (DeviceRequests::const_iterator it = requests_.begin(); |
| it != requests_.end() ; ++it) { |
| const DeviceRequest* request = it->second; |
| for (StreamDeviceInfoArray::const_iterator device_it = |
| request->devices.begin(); |
| device_it != request->devices.end(); ++device_it) { |
| std::string source_id = content::GetHMACForMediaDeviceID( |
| request->salt_callback, |
| request->security_origin, |
| device.id); |
| if (device_it->device.id == source_id && |
| device_it->device.type == device.type) { |
| session_ids.push_back(device_it->session_id); |
| if (it->second->requester) { |
| it->second->requester->DeviceStopped( |
| it->second->requesting_view_id, |
| it->first, |
| *device_it); |
| } |
| } |
| } |
| } |
| for (std::vector<int>::const_iterator it = session_ids.begin(); |
| it != session_ids.end(); ++it) { |
| StopDevice(device.type, *it); |
| } |
| } |
| |
| void MediaStreamManager::StartMonitoring() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| if (!base::SystemMonitor::Get()) |
| return; |
| |
| if (!monitoring_started_) { |
| monitoring_started_ = true; |
| base::SystemMonitor::Get()->AddDevicesChangedObserver(this); |
| |
| // Enumerate both the audio and video devices to cache the device lists |
| // and send them to media observer. |
| ++active_enumeration_ref_count_[MEDIA_DEVICE_AUDIO_CAPTURE]; |
| audio_input_device_manager_->EnumerateDevices(MEDIA_DEVICE_AUDIO_CAPTURE); |
| ++active_enumeration_ref_count_[MEDIA_DEVICE_VIDEO_CAPTURE]; |
| video_capture_manager_->EnumerateDevices(MEDIA_DEVICE_VIDEO_CAPTURE); |
| } |
| } |
| |
| void MediaStreamManager::StopMonitoring() { |
| DCHECK_EQ(base::MessageLoop::current(), io_loop_); |
| if (monitoring_started_) { |
| base::SystemMonitor::Get()->RemoveDevicesChangedObserver(this); |
| monitoring_started_ = false; |
| ClearEnumerationCache(&audio_enumeration_cache_); |
| ClearEnumerationCache(&video_enumeration_cache_); |
| } |
| } |
| |
| bool MediaStreamManager::GetRequestedDeviceCaptureId( |
| const DeviceRequest* request, |
| MediaStreamType type, |
| std::string* device_id) const { |
| DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE || |
| type == MEDIA_DEVICE_VIDEO_CAPTURE); |
| const StreamOptions::Constraints* mandatory = |
| (type == MEDIA_DEVICE_AUDIO_CAPTURE) ? |
| &request->options.mandatory_audio : &request->options.mandatory_video; |
| const StreamOptions::Constraints* optional = |
| (type == MEDIA_DEVICE_AUDIO_CAPTURE) ? |
| &request->options.optional_audio : &request->options.optional_video; |
| |
| std::vector<std::string> source_ids; |
| StreamOptions::GetConstraintsByName(*mandatory, |
| kMediaStreamSourceInfoId, &source_ids); |
| if (source_ids.size() > 1) { |
| LOG(ERROR) << "Only one mandatory audio " << kMediaStreamSourceInfoId |
| << " is supported."; |
| return false; |
| } |
| // If a specific device has been requested we need to find the real device |
| // id. |
| if (source_ids.size() == 1 && |
| !TranslateSourceIdToDeviceId(type, |
| request->salt_callback, |
| request->security_origin, |
| source_ids[0], device_id)) { |
| LOG(WARNING) << "Invalid mandatory audio " << kMediaStreamSourceInfoId |
| << " = " << source_ids[0] << "."; |
| return false; |
| } |
| // Check for optional audio sourceIDs. |
| if (device_id->empty()) { |
| StreamOptions::GetConstraintsByName(*optional, |
| kMediaStreamSourceInfoId, |
| &source_ids); |
| // Find the first sourceID that translates to device. Note that only one |
| // device per type can call to GenerateStream is ever opened. |
| for (std::vector<std::string>::const_iterator it = source_ids.begin(); |
| it != source_ids.end(); ++it) { |
| if (TranslateSourceIdToDeviceId(type, |
| request->salt_callback, |
| request->security_origin, |
| *it, |
| device_id)) { |
| break; |
| } |
| } |
| } |
| return true; |
| } |
| |
| void MediaStreamManager::TranslateDeviceIdToSourceId( |
| DeviceRequest* request, |
| MediaStreamDevice* device) { |
| if (request->audio_type() == MEDIA_DEVICE_AUDIO_CAPTURE || |
| request->video_type() == MEDIA_DEVICE_VIDEO_CAPTURE) { |
| device->id = content::GetHMACForMediaDeviceID( |
| request->salt_callback, |
| request->security_origin, |
| device->id); |
| } |
| } |
| |
| bool MediaStreamManager::TranslateSourceIdToDeviceId( |
| MediaStreamType stream_type, |
| const ResourceContext::SaltCallback& sc, |
| const GURL& security_origin, |
| const std::string& source_id, |
| std::string* device_id) const { |
| DCHECK(stream_type == MEDIA_DEVICE_AUDIO_CAPTURE || |
| stream_type == MEDIA_DEVICE_VIDEO_CAPTURE); |
| // The source_id can be empty if the constraint is set but empty. |
| if (source_id.empty()) |
| return false; |
| |
| const EnumerationCache* cache = |
| stream_type == MEDIA_DEVICE_AUDIO_CAPTURE ? |
| &audio_enumeration_cache_ : &video_enumeration_cache_; |
| |
| // If device monitoring hasn't started, the |device_guid| is not valid. |
| if (!cache->valid) |
| return false; |
| |
| for (StreamDeviceInfoArray::const_iterator it = cache->devices.begin(); |
| it != cache->devices.end(); |
| ++it) { |
| if (content::DoesMediaDeviceIDMatchHMAC(sc, security_origin, source_id, |
| it->device.id)) { |
| *device_id = it->device.id; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void MediaStreamManager::ClearEnumerationCache(EnumerationCache* cache) { |
| DCHECK_EQ(base::MessageLoop::current(), io_loop_); |
| cache->valid = false; |
| } |
| |
| void MediaStreamManager::StartEnumeration(DeviceRequest* request) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| |
| // Start monitoring the devices when doing the first enumeration. |
| if (!monitoring_started_ && base::SystemMonitor::Get()) { |
| StartMonitoring(); |
| } |
| |
| // Start enumeration for devices of all requested device types. |
| if (request->audio_type() != MEDIA_NO_SERVICE) { |
| const MediaStreamType stream_type = request->audio_type(); |
| request->SetState(stream_type, MEDIA_REQUEST_STATE_REQUESTED); |
| DCHECK_GE(active_enumeration_ref_count_[stream_type], 0); |
| if (active_enumeration_ref_count_[stream_type] == 0) { |
| ++active_enumeration_ref_count_[stream_type]; |
| GetDeviceManager(stream_type)->EnumerateDevices(stream_type); |
| } |
| } |
| if (request->video_type() != MEDIA_NO_SERVICE) { |
| const MediaStreamType stream_type = request->video_type(); |
| request->SetState(stream_type, MEDIA_REQUEST_STATE_REQUESTED); |
| DCHECK_GE(active_enumeration_ref_count_[stream_type], 0); |
| if (active_enumeration_ref_count_[stream_type] == 0) { |
| ++active_enumeration_ref_count_[stream_type]; |
| GetDeviceManager(stream_type)->EnumerateDevices(stream_type); |
| } |
| } |
| } |
| |
| std::string MediaStreamManager::AddRequest(DeviceRequest* request) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| |
| // Create a label for this request and verify it is unique. |
| std::string unique_label; |
| do { |
| unique_label = RandomLabel(); |
| } while (requests_.find(unique_label) != requests_.end()); |
| |
| requests_.insert(std::make_pair(unique_label, request)); |
| |
| return unique_label; |
| } |
| |
| MediaStreamManager::DeviceRequest* |
| MediaStreamManager::FindRequest(const std::string& label) const { |
| DeviceRequests::const_iterator request_it = requests_.find(label); |
| return request_it == requests_.end() ? NULL : request_it->second; |
| } |
| |
| void MediaStreamManager::DeleteRequest(const std::string& label) { |
| DeviceRequests::iterator it = requests_.find(label); |
| scoped_ptr<DeviceRequest> request(it->second); |
| requests_.erase(it); |
| } |
| |
| void MediaStreamManager::PostRequestToUI(const std::string& label, |
| DeviceRequest* request) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DCHECK(request->UIRequest()); |
| DVLOG(1) << "PostRequestToUI({label= " << label << "})"; |
| |
| const MediaStreamType audio_type = request->audio_type(); |
| const MediaStreamType video_type = request->video_type(); |
| |
| // Post the request to UI and set the state. |
| if (IsAudioMediaType(audio_type)) |
| request->SetState(audio_type, MEDIA_REQUEST_STATE_PENDING_APPROVAL); |
| if (IsVideoMediaType(video_type)) |
| request->SetState(video_type, MEDIA_REQUEST_STATE_PENDING_APPROVAL); |
| |
| if (use_fake_ui_) { |
| if (!fake_ui_) |
| fake_ui_.reset(new FakeMediaStreamUIProxy()); |
| |
| MediaStreamDevices devices; |
| if (audio_enumeration_cache_.valid) { |
| for (StreamDeviceInfoArray::const_iterator it = |
| audio_enumeration_cache_.devices.begin(); |
| it != audio_enumeration_cache_.devices.end(); ++it) { |
| devices.push_back(it->device); |
| } |
| } |
| if (video_enumeration_cache_.valid) { |
| for (StreamDeviceInfoArray::const_iterator it = |
| video_enumeration_cache_.devices.begin(); |
| it != video_enumeration_cache_.devices.end(); ++it) { |
| devices.push_back(it->device); |
| } |
| } |
| |
| fake_ui_->SetAvailableDevices(devices); |
| |
| request->ui_proxy = fake_ui_.Pass(); |
| } else { |
| request->ui_proxy = MediaStreamUIProxy::Create(); |
| } |
| |
| request->ui_proxy->RequestAccess( |
| *request->UIRequest(), |
| base::Bind(&MediaStreamManager::HandleAccessRequestResponse, |
| base::Unretained(this), label)); |
| } |
| |
| void MediaStreamManager::SetupRequest(const std::string& label) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DeviceRequest* request = FindRequest(label); |
| if (!request) { |
| DVLOG(1) << "SetupRequest label " << label << " doesn't exist!!"; |
| return; // This can happen if the request has been canceled. |
| } |
| |
| if (!request->security_origin.is_valid()) { |
| LOG(ERROR) << "Invalid security origin. " |
| << request->security_origin; |
| FinalizeRequestFailed(label, request); |
| return; |
| } |
| |
| MediaStreamType audio_type = MEDIA_NO_SERVICE; |
| MediaStreamType video_type = MEDIA_NO_SERVICE; |
| ParseStreamType(request->options, &audio_type, &video_type); |
| request->SetAudioType(audio_type); |
| request->SetVideoType(video_type); |
| |
| bool is_web_contents_capture = |
| audio_type == MEDIA_TAB_AUDIO_CAPTURE || |
| video_type == MEDIA_TAB_VIDEO_CAPTURE; |
| if (is_web_contents_capture && !SetupTabCaptureRequest(request)) { |
| FinalizeRequestFailed(label, request); |
| return; |
| } |
| |
| bool is_screen_capture = |
| video_type == MEDIA_DESKTOP_VIDEO_CAPTURE; |
| if (is_screen_capture && !SetupScreenCaptureRequest(request)) { |
| FinalizeRequestFailed(label, request); |
| return; |
| } |
| |
| if (!is_web_contents_capture && !is_screen_capture) { |
| if ((!audio_enumeration_cache_.valid && IsAudioMediaType(audio_type)) || |
| (!video_enumeration_cache_.valid && IsVideoMediaType(video_type))) { |
| // Enumerate the devices if there is no valid device lists to be used. |
| StartEnumeration(request); |
| return; |
| } |
| if (!SetupDeviceCaptureRequest(request)) { |
| FinalizeRequestFailed(label, request); |
| return; |
| } |
| } |
| PostRequestToUI(label, request); |
| } |
| |
| bool MediaStreamManager::SetupDeviceCaptureRequest(DeviceRequest* request) { |
| DCHECK((request->audio_type() == MEDIA_DEVICE_AUDIO_CAPTURE || |
| request->audio_type() == MEDIA_NO_SERVICE) && |
| (request->video_type() == MEDIA_DEVICE_VIDEO_CAPTURE || |
| request->video_type() == MEDIA_NO_SERVICE)); |
| std::string audio_device_id; |
| if (request->options.audio_requested && |
| !GetRequestedDeviceCaptureId(request, request->audio_type(), |
| &audio_device_id)) { |
| return false; |
| } |
| |
| std::string video_device_id; |
| if (request->options.video_requested && |
| !GetRequestedDeviceCaptureId(request, request->video_type(), |
| &video_device_id)) { |
| return false; |
| } |
| request->CreateUIRequest(audio_device_id, video_device_id); |
| DVLOG(3) << "Audio requested " << request->options.audio_requested |
| << " device id = " << audio_device_id |
| << "Video requested " << request->options.video_requested |
| << " device id = " << video_device_id; |
| return true; |
| } |
| |
| bool MediaStreamManager::SetupTabCaptureRequest(DeviceRequest* request) { |
| DCHECK(request->audio_type() == MEDIA_TAB_AUDIO_CAPTURE || |
| request->video_type() == MEDIA_TAB_VIDEO_CAPTURE); |
| |
| std::string capture_device_id; |
| bool mandatory_audio = false; |
| bool mandatory_video = false; |
| if (!request->options.GetFirstAudioConstraintByName(kMediaStreamSourceId, |
| &capture_device_id, |
| &mandatory_audio) && |
| !request->options.GetFirstVideoConstraintByName(kMediaStreamSourceId, |
| &capture_device_id, |
| &mandatory_video)) { |
| return false; |
| } |
| DCHECK(mandatory_audio || mandatory_video); |
| |
| // Customize options for a WebContents based capture. |
| int target_render_process_id = 0; |
| int target_render_view_id = 0; |
| |
| // TODO(justinlin): Can't plumb audio mirroring using stream type right |
| // now, so plumbing by device_id. Will revisit once it's refactored. |
| // http://crbug.com/163100 |
| std::string tab_capture_device_id = |
| WebContentsCaptureUtil::AppendWebContentsDeviceScheme(capture_device_id); |
| |
| bool has_valid_device_id = WebContentsCaptureUtil::ExtractTabCaptureTarget( |
| tab_capture_device_id, &target_render_process_id, |
| &target_render_view_id); |
| if (!has_valid_device_id || |
| (request->audio_type() != MEDIA_TAB_AUDIO_CAPTURE && |
| request->audio_type() != MEDIA_NO_SERVICE) || |
| (request->video_type() != MEDIA_TAB_VIDEO_CAPTURE && |
| request->video_type() != MEDIA_NO_SERVICE)) { |
| return false; |
| } |
| |
| request->CreateTabCatureUIRequest(target_render_process_id, |
| target_render_view_id, |
| tab_capture_device_id); |
| |
| DVLOG(3) << "SetupTabCaptureRequest " |
| << ", {tab_capture_device_id = " << tab_capture_device_id << "}" |
| << ", {target_render_process_id = " << target_render_process_id |
| << "}" |
| << ", {target_render_view_id = " << target_render_view_id << "}"; |
| return true; |
| } |
| |
| bool MediaStreamManager::SetupScreenCaptureRequest(DeviceRequest* request) { |
| DCHECK(request->audio_type() == MEDIA_LOOPBACK_AUDIO_CAPTURE || |
| request->video_type() == MEDIA_DESKTOP_VIDEO_CAPTURE); |
| |
| // For screen capture we only support two valid combinations: |
| // (1) screen video capture only, or |
| // (2) screen video capture with loopback audio capture. |
| if (request->video_type() != MEDIA_DESKTOP_VIDEO_CAPTURE || |
| (request->audio_type() != MEDIA_NO_SERVICE && |
| request->audio_type() != MEDIA_LOOPBACK_AUDIO_CAPTURE)) { |
| LOG(ERROR) << "Invalid screen capture request."; |
| return false; |
| } |
| |
| std::string video_device_id; |
| if (request->video_type() == MEDIA_DESKTOP_VIDEO_CAPTURE) { |
| std::string video_stream_source; |
| bool mandatory = false; |
| if (!request->options.GetFirstVideoConstraintByName( |
| kMediaStreamSource, |
| &video_stream_source, |
| &mandatory)) { |
| LOG(ERROR) << kMediaStreamSource << " not found."; |
| return false; |
| } |
| DCHECK(mandatory); |
| |
| if (video_stream_source == kMediaStreamSourceDesktop) { |
| if (!request->options.GetFirstVideoConstraintByName( |
| kMediaStreamSourceId, |
| &video_device_id, |
| &mandatory)) { |
| LOG(ERROR) << kMediaStreamSourceId << " not found."; |
| return false; |
| } |
| DCHECK(mandatory); |
| } |
| } |
| |
| request->CreateUIRequest("", video_device_id); |
| return true; |
| } |
| |
| StreamDeviceInfoArray MediaStreamManager::GetDevicesOpenedByRequest( |
| const std::string& label) const { |
| DeviceRequest* request = FindRequest(label); |
| if (!request) |
| return StreamDeviceInfoArray(); |
| return request->devices; |
| } |
| |
| bool MediaStreamManager::FindExistingRequestedDeviceInfo( |
| const DeviceRequest& new_request, |
| const MediaStreamDevice& new_device_info, |
| StreamDeviceInfo* existing_device_info, |
| MediaRequestState* existing_request_state) const { |
| DCHECK(existing_device_info); |
| DCHECK(existing_request_state); |
| |
| std::string source_id = content::GetHMACForMediaDeviceID( |
| new_request.salt_callback, |
| new_request.security_origin, |
| new_device_info.id); |
| |
| for (DeviceRequests::const_iterator it = requests_.begin(); |
| it != requests_.end() ; ++it) { |
| const DeviceRequest* request = it->second; |
| if (request->requesting_process_id == new_request.requesting_process_id && |
| request->requesting_view_id == new_request.requesting_view_id && |
| request->request_type == new_request.request_type) { |
| for (StreamDeviceInfoArray::const_iterator device_it = |
| request->devices.begin(); |
| device_it != request->devices.end(); ++device_it) { |
| if (device_it->device.id == source_id && |
| device_it->device.type == new_device_info.type) { |
| *existing_device_info = *device_it; |
| *existing_request_state = request->state(device_it->device.type); |
| return true; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| void MediaStreamManager::FinalizeGenerateStream(const std::string& label, |
| DeviceRequest* request) { |
| DVLOG(1) << "FinalizeGenerateStream label " << label; |
| const StreamDeviceInfoArray& requested_devices = request->devices; |
| |
| // Partition the array of devices into audio vs video. |
| StreamDeviceInfoArray audio_devices, video_devices; |
| for (StreamDeviceInfoArray::const_iterator device_it = |
| requested_devices.begin(); |
| device_it != requested_devices.end(); ++device_it) { |
| if (IsAudioMediaType(device_it->device.type)) { |
| audio_devices.push_back(*device_it); |
| } else if (IsVideoMediaType(device_it->device.type)) { |
| video_devices.push_back(*device_it); |
| } else { |
| NOTREACHED(); |
| } |
| } |
| |
| request->requester->StreamGenerated( |
| request->requesting_view_id, |
| request->page_request_id, |
| label, audio_devices, video_devices); |
| } |
| |
| void MediaStreamManager::FinalizeRequestFailed( |
| const std::string& label, |
| DeviceRequest* request) { |
| if (request->requester) |
| request->requester->StreamGenerationFailed( |
| request->requesting_view_id, |
| request->page_request_id); |
| |
| if (request->request_type == MEDIA_DEVICE_ACCESS && |
| !request->callback.is_null()) { |
| request->callback.Run(MediaStreamDevices(), request->ui_proxy.Pass()); |
| } |
| |
| DeleteRequest(label); |
| } |
| |
| void MediaStreamManager::FinalizeOpenDevice(const std::string& label, |
| DeviceRequest* request) { |
| const StreamDeviceInfoArray& requested_devices = request->devices; |
| request->requester->DeviceOpened(request->requesting_view_id, |
| request->page_request_id, |
| label, requested_devices.front()); |
| } |
| |
| void MediaStreamManager::FinalizeEnumerateDevices(const std::string& label, |
| DeviceRequest* request) { |
| if (!request->security_origin.is_valid()) { |
| request->requester->DevicesEnumerated( |
| request->requesting_view_id, |
| request->page_request_id, |
| label, |
| StreamDeviceInfoArray()); |
| return; |
| } |
| for (StreamDeviceInfoArray::iterator it = request->devices.begin(); |
| it != request->devices.end(); ++it) { |
| TranslateDeviceIdToSourceId(request, &it->device); |
| } |
| request->requester->DevicesEnumerated(request->requesting_view_id, |
| request->page_request_id, |
| label, |
| request->devices); |
| } |
| |
| void MediaStreamManager::FinalizeMediaAccessRequest( |
| const std::string& label, |
| DeviceRequest* request, |
| const MediaStreamDevices& devices) { |
| if (!request->callback.is_null()) |
| request->callback.Run(devices, request->ui_proxy.Pass()); |
| |
| // Delete the request since it is done. |
| DeleteRequest(label); |
| } |
| |
| void MediaStreamManager::InitializeDeviceManagersOnIOThread() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| if (device_thread_) |
| return; |
| |
| device_thread_.reset(new base::Thread("MediaStreamDeviceThread")); |
| #if defined(OS_WIN) |
| device_thread_->init_com_with_mta(true); |
| #endif |
| CHECK(device_thread_->Start()); |
| |
| audio_input_device_manager_ = new AudioInputDeviceManager(audio_manager_); |
| audio_input_device_manager_->Register( |
| this, device_thread_->message_loop_proxy().get()); |
| |
| video_capture_manager_ = new VideoCaptureManager(); |
| video_capture_manager_->Register(this, |
| device_thread_->message_loop_proxy().get()); |
| |
| // We want to be notified of IO message loop destruction to delete the thread |
| // and the device managers. |
| io_loop_ = base::MessageLoop::current(); |
| io_loop_->AddDestructionObserver(this); |
| |
| if (CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kUseFakeDeviceForMediaStream)) { |
| DVLOG(1) << "Using fake device"; |
| UseFakeDevice(); |
| } |
| } |
| |
| void MediaStreamManager::Opened(MediaStreamType stream_type, |
| int capture_session_id) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DVLOG(1) << "Opened({stream_type = " << stream_type << "} " |
| << "{capture_session_id = " << capture_session_id << "})"; |
| // Find the request(s) containing this device and mark it as used. |
| // It can be used in several requests since the same device can be |
| // requested from the same web page. |
| for (DeviceRequests::iterator request_it = requests_.begin(); |
| request_it != requests_.end(); ++request_it) { |
| const std::string& label = request_it->first; |
| DeviceRequest* request = request_it->second; |
| StreamDeviceInfoArray* devices = &(request->devices); |
| for (StreamDeviceInfoArray::iterator device_it = devices->begin(); |
| device_it != devices->end(); ++device_it) { |
| if (device_it->device.type == stream_type && |
| device_it->session_id == capture_session_id) { |
| CHECK(request->state(device_it->device.type) == |
| MEDIA_REQUEST_STATE_OPENING); |
| // We've found a matching request. |
| request->SetState(device_it->device.type, MEDIA_REQUEST_STATE_DONE); |
| |
| if (IsAudioMediaType(device_it->device.type)) { |
| // Store the native audio parameters in the device struct. |
| // TODO(xians): Handle the tab capture sample rate/channel layout |
| // in AudioInputDeviceManager::Open(). |
| if (device_it->device.type != content::MEDIA_TAB_AUDIO_CAPTURE) { |
| const StreamDeviceInfo* info = |
| audio_input_device_manager_->GetOpenedDeviceInfoById( |
| device_it->session_id); |
| device_it->device.input = info->device.input; |
| device_it->device.matched_output = info->device.matched_output; |
| } |
| } |
| if (RequestDone(*request)) |
| HandleRequestDone(label, request); |
| break; |
| } |
| } |
| } |
| } |
| |
| void MediaStreamManager::HandleRequestDone(const std::string& label, |
| DeviceRequest* request) { |
| DCHECK(RequestDone(*request)); |
| DVLOG(1) << "HandleRequestDone(" |
| << ", {label = " << label << "})"; |
| |
| switch (request->request_type) { |
| case MEDIA_OPEN_DEVICE: |
| FinalizeOpenDevice(label, request); |
| break; |
| case MEDIA_GENERATE_STREAM: { |
| FinalizeGenerateStream(label, request); |
| break; |
| } |
| default: |
| NOTREACHED(); |
| break; |
| } |
| |
| if (request->ui_proxy.get()) { |
| request->ui_proxy->OnStarted( |
| base::Bind(&MediaStreamManager::StopMediaStreamFromBrowser, |
| base::Unretained(this), label)); |
| } |
| } |
| |
| void MediaStreamManager::Closed(MediaStreamType stream_type, |
| int capture_session_id) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| } |
| |
| void MediaStreamManager::DevicesEnumerated( |
| MediaStreamType stream_type, const StreamDeviceInfoArray& devices) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DVLOG(1) << "DevicesEnumerated(" |
| << ", {stream_type = " << stream_type << "})"; |
| |
| // Only cache the device list when the device list has been changed. |
| bool need_update_clients = false; |
| EnumerationCache* cache = |
| stream_type == MEDIA_DEVICE_AUDIO_CAPTURE ? |
| &audio_enumeration_cache_ : &video_enumeration_cache_; |
| if (!cache->valid || |
| devices.size() != cache->devices.size() || |
| !std::equal(devices.begin(), devices.end(), cache->devices.begin(), |
| StreamDeviceInfo::IsEqual)) { |
| StopRemovedDevices(cache->devices, devices); |
| cache->devices = devices; |
| need_update_clients = true; |
| |
| // The device might not be able to be enumerated when it is not warmed up, |
| // for example, when the machine just wakes up from sleep. We set the cache |
| // to be invalid so that the next media request will trigger the |
| // enumeration again. See issue/317673. |
| cache->valid = !devices.empty(); |
| } |
| |
| if (need_update_clients && monitoring_started_) |
| NotifyDevicesChanged(stream_type, devices); |
| |
| // Publish the result for all requests waiting for device list(s). |
| // Find the requests waiting for this device list, store their labels and |
| // release the iterator before calling device settings. We might get a call |
| // back from device_settings that will need to iterate through devices. |
| std::list<std::string> label_list; |
| for (DeviceRequests::iterator it = requests_.begin(); it != requests_.end(); |
| ++it) { |
| if (it->second->state(stream_type) == MEDIA_REQUEST_STATE_REQUESTED && |
| (it->second->audio_type() == stream_type || |
| it->second->video_type() == stream_type)) { |
| if (it->second->request_type != MEDIA_ENUMERATE_DEVICES) |
| it->second->SetState(stream_type, MEDIA_REQUEST_STATE_PENDING_APPROVAL); |
| label_list.push_back(it->first); |
| } |
| } |
| for (std::list<std::string>::iterator it = label_list.begin(); |
| it != label_list.end(); ++it) { |
| DeviceRequest* request = FindRequest(*it); |
| switch (request->request_type) { |
| case MEDIA_ENUMERATE_DEVICES: |
| if (need_update_clients && request->requester) { |
| request->devices = devices; |
| FinalizeEnumerateDevices(*it, request); |
| } |
| break; |
| default: |
| if (request->state(request->audio_type()) == |
| MEDIA_REQUEST_STATE_REQUESTED || |
| request->state(request->video_type()) == |
| MEDIA_REQUEST_STATE_REQUESTED) { |
| // We are doing enumeration for other type of media, wait until it is |
| // all done before posting the request to UI because UI needs |
| // the device lists to handle the request. |
| break; |
| } |
| if (!SetupDeviceCaptureRequest(request)) |
| FinalizeRequestFailed(*it, request); |
| else |
| PostRequestToUI(*it, request); |
| break; |
| } |
| } |
| label_list.clear(); |
| --active_enumeration_ref_count_[stream_type]; |
| DCHECK_GE(active_enumeration_ref_count_[stream_type], 0); |
| } |
| |
| void MediaStreamManager::HandleAccessRequestResponse( |
| const std::string& label, |
| const MediaStreamDevices& devices) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| DVLOG(1) << "HandleAccessRequestResponse(" |
| << ", {label = " << label << "})"; |
| |
| DeviceRequest* request = FindRequest(label); |
| if (!request) { |
| // The request has been canceled before the UI returned. |
| return; |
| } |
| |
| if (request->request_type == MEDIA_DEVICE_ACCESS) { |
| FinalizeMediaAccessRequest(label, request, devices); |
| return; |
| } |
| |
| // Handle the case when the request was denied. |
| if (devices.empty()) { |
| FinalizeRequestFailed(label, request); |
| return; |
| } |
| |
| // Process all newly-accepted devices for this request. |
| bool found_audio = false; |
| bool found_video = false; |
| for (MediaStreamDevices::const_iterator device_it = devices.begin(); |
| device_it != devices.end(); ++device_it) { |
| StreamDeviceInfo device_info; |
| device_info.device = *device_it; |
| |
| // TODO(justinlin): Nicer way to do this? |
| // Re-append the device's id since we lost it when posting request to UI. |
| if (device_info.device.type == content::MEDIA_TAB_VIDEO_CAPTURE || |
| device_info.device.type == content::MEDIA_TAB_AUDIO_CAPTURE) { |
| device_info.device.id = request->UIRequest()->tab_capture_device_id; |
| |
| // Initialize the sample_rate and channel_layout here since for audio |
| // mirroring, we don't go through EnumerateDevices where these are usually |
| // initialized. |
| if (device_info.device.type == content::MEDIA_TAB_AUDIO_CAPTURE) { |
| const media::AudioParameters parameters = |
| audio_manager_->GetDefaultOutputStreamParameters(); |
| int sample_rate = parameters.sample_rate(); |
| // If we weren't able to get the native sampling rate or the sample_rate |
| // is outside the valid range for input devices set reasonable defaults. |
| if (sample_rate <= 0 || sample_rate > 96000) |
| sample_rate = 44100; |
| |
| device_info.device.input.sample_rate = sample_rate; |
| device_info.device.input.channel_layout = media::CHANNEL_LAYOUT_STEREO; |
| } |
| } |
| |
| if (device_info.device.type == request->audio_type()) { |
| found_audio = true; |
| } else if (device_info.device.type == request->video_type()) { |
| found_video = true; |
| } |
| |
| // If this is request for a new MediaStream, a device is only opened once |
| // per render view. This is so that the permission to use a device can be |
| // revoked by a single call to StopStreamDevice regardless of how many |
| // MediaStreams it is being used in. |
| if (request->request_type == MEDIA_GENERATE_STREAM) { |
| MediaRequestState state; |
| if (FindExistingRequestedDeviceInfo(*request, |
| device_info.device, |
| &device_info, |
| &state)) { |
| request->devices.push_back(device_info); |
| request->SetState(device_info.device.type, state); |
| DVLOG(1) << "HandleAccessRequestResponse - device already opened " |
| << ", {label = " << label << "}" |
| << ", device_id = " << device_it->id << "}"; |
| continue; |
| } |
| } |
| device_info.session_id = |
| GetDeviceManager(device_info.device.type)->Open(device_info); |
| TranslateDeviceIdToSourceId(request, &device_info.device); |
| request->devices.push_back(device_info); |
| |
| request->SetState(device_info.device.type, MEDIA_REQUEST_STATE_OPENING); |
| DVLOG(1) << "HandleAccessRequestResponse - opening device " |
| << ", {label = " << label << "}" |
| << ", {device_id = " << device_info.device.id << "}" |
| << ", {session_id = " << device_info.session_id << "}"; |
| } |
| |
| // Check whether we've received all stream types requested. |
| if (!found_audio && IsAudioMediaType(request->audio_type())) { |
| request->SetState(request->audio_type(), MEDIA_REQUEST_STATE_ERROR); |
| DVLOG(1) << "Set no audio found label " << label; |
| } |
| |
| if (!found_video && IsVideoMediaType(request->video_type())) |
| request->SetState(request->video_type(), MEDIA_REQUEST_STATE_ERROR); |
| |
| if (RequestDone(*request)) |
| HandleRequestDone(label, request); |
| } |
| |
| void MediaStreamManager::StopMediaStreamFromBrowser(const std::string& label) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| |
| DeviceRequest* request = FindRequest(label); |
| if (!request) |
| return; |
| |
| // Notify renderers that the devices in the stream will be stopped. |
| if (request->requester) { |
| for (StreamDeviceInfoArray::iterator device_it = request->devices.begin(); |
| device_it != request->devices.end(); ++device_it) { |
| request->requester->DeviceStopped(request->requesting_view_id, |
| label, |
| *device_it); |
| } |
| } |
| |
| CancelRequest(label); |
| } |
| |
| void MediaStreamManager::UseFakeDevice() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| video_capture_manager()->UseFakeDevice(); |
| audio_input_device_manager()->UseFakeDevice(); |
| } |
| |
| void MediaStreamManager::UseFakeUI(scoped_ptr<FakeMediaStreamUIProxy> fake_ui) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| use_fake_ui_ = true; |
| fake_ui_ = fake_ui.Pass(); |
| } |
| |
| void MediaStreamManager::WillDestroyCurrentMessageLoop() { |
| DVLOG(3) << "MediaStreamManager::WillDestroyCurrentMessageLoop()"; |
| DCHECK_EQ(base::MessageLoop::current(), io_loop_); |
| DCHECK(requests_.empty()); |
| if (device_thread_) { |
| StopMonitoring(); |
| |
| video_capture_manager_->Unregister(); |
| audio_input_device_manager_->Unregister(); |
| device_thread_.reset(); |
| } |
| |
| audio_input_device_manager_ = NULL; |
| video_capture_manager_ = NULL; |
| } |
| |
| void MediaStreamManager::NotifyDevicesChanged( |
| MediaStreamType stream_type, |
| const StreamDeviceInfoArray& devices) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| MediaObserver* media_observer = |
| GetContentClient()->browser()->GetMediaObserver(); |
| if (media_observer == NULL) |
| return; |
| |
| // Map the devices to MediaStreamDevices. |
| MediaStreamDevices new_devices; |
| for (StreamDeviceInfoArray::const_iterator it = devices.begin(); |
| it != devices.end(); ++it) { |
| new_devices.push_back(it->device); |
| } |
| |
| if (IsAudioMediaType(stream_type)) { |
| media_observer->OnAudioCaptureDevicesChanged(new_devices); |
| } else if (IsVideoMediaType(stream_type)) { |
| media_observer->OnVideoCaptureDevicesChanged(new_devices); |
| } else { |
| NOTREACHED(); |
| } |
| } |
| |
| bool MediaStreamManager::RequestDone(const DeviceRequest& request) const { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| |
| const bool requested_audio = IsAudioMediaType(request.audio_type()); |
| const bool requested_video = IsVideoMediaType(request.video_type()); |
| |
| const bool audio_done = |
| !requested_audio || |
| request.state(request.audio_type()) == MEDIA_REQUEST_STATE_DONE || |
| request.state(request.audio_type()) == MEDIA_REQUEST_STATE_ERROR; |
| if (!audio_done) |
| return false; |
| |
| const bool video_done = |
| !requested_video || |
| request.state(request.video_type()) == MEDIA_REQUEST_STATE_DONE || |
| request.state(request.video_type()) == MEDIA_REQUEST_STATE_ERROR; |
| if (!video_done) |
| return false; |
| |
| return true; |
| } |
| |
| MediaStreamProvider* MediaStreamManager::GetDeviceManager( |
| MediaStreamType stream_type) { |
| if (IsVideoMediaType(stream_type)) { |
| return video_capture_manager(); |
| } else if (IsAudioMediaType(stream_type)) { |
| return audio_input_device_manager(); |
| } |
| NOTREACHED(); |
| return NULL; |
| } |
| |
| void MediaStreamManager::OnDevicesChanged( |
| base::SystemMonitor::DeviceType device_type) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| |
| // NOTE: This method is only called in response to physical audio/video device |
| // changes (from the operating system). |
| |
| MediaStreamType stream_type; |
| if (device_type == base::SystemMonitor::DEVTYPE_AUDIO_CAPTURE) { |
| stream_type = MEDIA_DEVICE_AUDIO_CAPTURE; |
| } else if (device_type == base::SystemMonitor::DEVTYPE_VIDEO_CAPTURE) { |
| stream_type = MEDIA_DEVICE_VIDEO_CAPTURE; |
| } else { |
| return; // Uninteresting device change. |
| } |
| |
| // Always do enumeration even though some enumeration is in progress, |
| // because those enumeration commands could be sent before these devices |
| // change. |
| ++active_enumeration_ref_count_[stream_type]; |
| GetDeviceManager(stream_type)->EnumerateDevices(stream_type); |
| } |
| |
| } // namespace content |