blob: b97bd9070d22b2ebc6fa58968b1ee3bd8604bf66 [file] [log] [blame]
// 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 <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <cctype>
#include <list>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/power_monitor/power_monitor.h"
#include "base/rand_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/task_runner_util.h"
#include "base/threading/thread.h"
#include "base/threading/thread_local.h"
#include "build/build_config.h"
#include "content/browser/child_process_security_policy_impl.h"
#include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
#include "content/browser/gpu/gpu_process_host.h"
#include "content/browser/renderer_host/media/audio_input_device_manager.h"
#include "content/browser/renderer_host/media/audio_service_listener.h"
#include "content/browser/renderer_host/media/in_process_video_capture_provider.h"
#include "content/browser/renderer_host/media/media_capture_devices_impl.h"
#include "content/browser/renderer_host/media/media_devices_manager.h"
#include "content/browser/renderer_host/media/media_stream_ui_proxy.h"
#include "content/browser/renderer_host/media/service_video_capture_provider.h"
#include "content/browser/renderer_host/media/video_capture_dependencies.h"
#include "content/browser/renderer_host/media/video_capture_manager.h"
#include "content/browser/renderer_host/media/video_capture_provider_switcher.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/desktop_streams_registry.h"
#include "content/public/browser/media_observer.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents_media_capture_id.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "crypto/hmac.h"
#include "media/audio/audio_device_description.h"
#include "media/audio/audio_system.h"
#include "media/base/audio_parameters.h"
#include "media/base/channel_layout.h"
#include "media/base/media_switches.h"
#include "media/capture/video/create_video_capture_device_factory.h"
#include "media/capture/video/video_capture_system_impl.h"
#include "services/video_capture/public/uma/video_capture_service_event.h"
#include "url/gurl.h"
#include "url/origin.h"
#if defined(OS_WIN)
#include "base/win/scoped_com_initializer.h"
#endif
#if defined(OS_CHROMEOS)
#include "chromeos/audio/cras_audio_handler.h"
#include "media/capture/video/chromeos/camera_hal_dispatcher_impl.h"
#include "media/capture/video/chromeos/public/cros_features.h"
#include "media/capture/video/chromeos/video_capture_device_factory_chromeos.h"
#endif
namespace content {
base::LazyInstance<base::ThreadLocalPointer<MediaStreamManager>>::Leaky
g_media_stream_manager_tls_ptr = LAZY_INSTANCE_INITIALIZER;
namespace {
// Creates a random label used to identify requests.
std::string RandomLabel() {
// An earlier PeerConnection spec [1] defined MediaStream::label alphabet as
// an uuid with 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. That causes problems with searching for labels in bots, so we use a
// safe alphanumeric subset |kAlphabet|.
// [1] http://dev.w3.org/2011/webrtc/editor/webrtc.html
static const char kAlphabet[] =
"0123456789"
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
static const size_t kRfc4122LengthLabel = 36u;
std::string label(kRfc4122LengthLabel, ' ');
for (char& c : label) {
// Use |arraysize(kAlphabet) - 1| to avoid |kAlphabet|s terminating '\0';
c = kAlphabet[base::RandGenerator(arraysize(kAlphabet) - 1)];
DCHECK(std::isalnum(c)) << c;
}
return label;
}
// Turns off available audio effects (removes the flag) if the options
// explicitly turn them off.
void FilterAudioEffects(const StreamControls& controls, int* effects) {
DCHECK(effects);
// TODO(ajm): Should we handle ECHO_CANCELLER here?
}
// Unlike other effects, hotword is off by default, so turn it on if it's
// requested and available.
void EnableHotwordEffect(const StreamControls& controls, int* effects) {
DCHECK(effects);
if (controls.hotword_enabled) {
#if defined(OS_CHROMEOS)
chromeos::AudioDeviceList devices;
chromeos::CrasAudioHandler::Get()->GetAudioDevices(&devices);
// Only enable if a hotword device exists.
for (const chromeos::AudioDevice& device : devices) {
if (device.type == chromeos::AUDIO_TYPE_HOTWORD) {
DCHECK(device.is_input);
*effects |= media::AudioParameters::HOTWORD;
}
}
#endif
}
}
bool GetDeviceIDFromHMAC(const std::string& salt,
const url::Origin& security_origin,
const std::string& hmac_device_id,
const MediaDeviceInfoArray& devices,
std::string* device_id) {
// The source_id can be empty if the constraint is set but empty.
if (hmac_device_id.empty())
return false;
for (const auto& device_info : devices) {
if (MediaStreamManager::DoesMediaDeviceIDMatchHMAC(
salt, security_origin, hmac_device_id, device_info.device_id)) {
*device_id = device_info.device_id;
return true;
}
}
return false;
}
MediaStreamType ConvertToMediaStreamType(MediaDeviceType type) {
switch (type) {
case MEDIA_DEVICE_TYPE_AUDIO_INPUT:
return MEDIA_DEVICE_AUDIO_CAPTURE;
case MEDIA_DEVICE_TYPE_VIDEO_INPUT:
return MEDIA_DEVICE_VIDEO_CAPTURE;
default:
NOTREACHED();
}
return MEDIA_NO_SERVICE;
}
MediaDeviceType ConvertToMediaDeviceType(MediaStreamType stream_type) {
switch (stream_type) {
case MEDIA_DEVICE_AUDIO_CAPTURE:
return MEDIA_DEVICE_TYPE_AUDIO_INPUT;
case MEDIA_DEVICE_VIDEO_CAPTURE:
return MEDIA_DEVICE_TYPE_VIDEO_INPUT;
default:
NOTREACHED();
}
return NUM_MEDIA_DEVICE_TYPES;
}
void SendVideoCaptureLogMessage(const std::string& message) {
MediaStreamManager::SendMessageToNativeLog("video capture: " + message);
}
MediaStreamType AdjustAudioStreamTypeBasedOnCommandLineSwitches(
MediaStreamType stream_type) {
if (stream_type != MEDIA_DESKTOP_AUDIO_CAPTURE)
return stream_type;
const bool audio_support_flag_for_desktop_share =
!base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableAudioSupportForDesktopShare);
return audio_support_flag_for_desktop_share ? MEDIA_DESKTOP_AUDIO_CAPTURE
: MEDIA_NO_SERVICE;
}
} // 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(
int requesting_process_id,
int requesting_frame_id,
int page_request_id,
bool user_gesture,
MediaStreamRequestType request_type,
const StreamControls& controls,
MediaDeviceSaltAndOrigin salt_and_origin,
DeviceStoppedCallback device_stopped_cb = DeviceStoppedCallback())
: requesting_process_id(requesting_process_id),
requesting_frame_id(requesting_frame_id),
page_request_id(page_request_id),
user_gesture(user_gesture),
request_type(request_type),
controls(controls),
salt_and_origin(std::move(salt_and_origin)),
device_stopped_cb(std::move(device_stopped_cb)),
state_(NUM_MEDIA_TYPES, MEDIA_REQUEST_STATE_NOT_REQUESTED),
audio_type_(MEDIA_NO_SERVICE),
video_type_(MEDIA_NO_SERVICE),
target_process_id_(-1),
target_frame_id_(-1) {}
~DeviceRequest() { RunMojoCallbacks(); }
void SetAudioType(MediaStreamType audio_type) {
DCHECK(IsAudioInputMediaType(audio_type) || audio_type == MEDIA_NO_SERVICE);
audio_type_ = audio_type;
}
MediaStreamType audio_type() const { return audio_type_; }
void SetVideoType(MediaStreamType video_type) {
DCHECK(IsVideoInputMediaType(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_);
target_process_id_ = requesting_process_id;
target_frame_id_ = requesting_frame_id;
ui_request_.reset(new MediaStreamRequest(
requesting_process_id, requesting_frame_id, page_request_id,
salt_and_origin.origin.GetURL(), user_gesture, request_type,
requested_audio_device_id, requested_video_device_id, audio_type_,
video_type_, controls.disable_local_echo));
}
// Creates a tab capture specific MediaStreamRequest object that is used by
// this request when UI is asked for permission and device selection.
void CreateTabCaptureUIRequest(int target_render_process_id,
int target_render_frame_id) {
DCHECK(!ui_request_);
target_process_id_ = target_render_process_id;
target_frame_id_ = target_render_frame_id;
ui_request_.reset(new MediaStreamRequest(
target_render_process_id, target_render_frame_id, page_request_id,
salt_and_origin.origin.GetURL(), user_gesture, request_type, "", "",
audio_type_, video_type_, controls.disable_local_echo));
}
bool HasUIRequest() const { return ui_request_.get() != nullptr; }
std::unique_ptr<MediaStreamRequest> DetachUIRequest() {
return std::move(ui_request_);
}
// 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) {
state_[static_cast<MediaStreamType>(i)] = new_state;
}
} else {
state_[stream_type] = new_state;
}
MediaObserver* media_observer =
GetContentClient()->browser()->GetMediaObserver();
if (!media_observer)
return;
if (stream_type == NUM_MEDIA_TYPES) {
for (int i = MEDIA_NO_SERVICE + 1; i < NUM_MEDIA_TYPES; ++i) {
media_observer->OnMediaRequestStateChanged(
target_process_id_, target_frame_id_, page_request_id,
salt_and_origin.origin.GetURL(), static_cast<MediaStreamType>(i),
new_state);
}
} else {
media_observer->OnMediaRequestStateChanged(
target_process_id_, target_frame_id_, page_request_id,
salt_and_origin.origin.GetURL(), stream_type, new_state);
}
}
MediaRequestState state(MediaStreamType stream_type) const {
return state_[stream_type];
}
void SetCapturingLinkSecured(bool is_secure) {
MediaObserver* media_observer =
GetContentClient()->browser()->GetMediaObserver();
if (!media_observer)
return;
media_observer->OnSetCapturingLinkSecured(target_process_id_,
target_frame_id_, page_request_id,
video_type_, is_secure);
}
void RunMojoCallbacks() {
if (generate_stream_cb) {
std::move(generate_stream_cb)
.Run(MEDIA_DEVICE_FAILED_DUE_TO_SHUTDOWN, std::string(),
MediaStreamDevices(), MediaStreamDevices());
}
if (open_device_cb) {
std::move(open_device_cb)
.Run(false /* success */, std::string(), MediaStreamDevice());
}
}
// 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 frame id that requested this stream to be generated and that
// will receive a handle to the MediaStream. This may be different from
// MediaStreamRequest::render_frame_id which in the tab capture case
// specifies the target renderer from which audio and video is captured.
const int requesting_frame_id;
// An ID the render frame provided to identify this request.
const int page_request_id;
const bool user_gesture;
const MediaStreamRequestType request_type;
const StreamControls controls;
const MediaDeviceSaltAndOrigin salt_and_origin;
MediaStreamDevices 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.
MediaAccessRequestCallback media_access_request_cb;
GenerateStreamCallback generate_stream_cb;
OpenDeviceCallback open_device_cb;
DeviceStoppedCallback device_stopped_cb;
std::unique_ptr<MediaStreamUIProxy> ui_proxy;
std::string tab_capture_device_id;
private:
std::vector<MediaRequestState> state_;
std::unique_ptr<MediaStreamRequest> ui_request_;
MediaStreamType audio_type_;
MediaStreamType video_type_;
int target_process_id_;
int target_frame_id_;
};
// static
void MediaStreamManager::SendMessageToNativeLog(const std::string& message) {
if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::BindOnce(&MediaStreamManager::SendMessageToNativeLog, message));
return;
}
MediaStreamManager* msm = g_media_stream_manager_tls_ptr.Pointer()->Get();
if (!msm) {
// MediaStreamManager hasn't been initialized. This is allowed in tests.
return;
}
msm->AddLogMessageOnIOThread(message);
}
MediaStreamManager::MediaStreamManager(
media::AudioSystem* audio_system,
scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner)
: MediaStreamManager(audio_system, std::move(audio_task_runner), nullptr) {}
MediaStreamManager::MediaStreamManager(
media::AudioSystem* audio_system,
scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
std::unique_ptr<VideoCaptureProvider> video_capture_provider)
: audio_system_(audio_system),
fake_ui_factory_() {
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kUseFakeUIForMediaStream)) {
fake_ui_factory_ = base::Bind([] {
return std::make_unique<FakeMediaStreamUIProxy>(
/*tests_use_fake_render_frame_hosts=*/false);
});
}
DCHECK(audio_system_);
if (!video_capture_provider) {
scoped_refptr<base::SingleThreadTaskRunner> device_task_runner =
#if defined(OS_WIN)
// Windows unconditionally requires its own thread (see below).
nullptr;
#else
// Share the provided |audio_task_runner| if it's non-null.
std::move(audio_task_runner);
#endif
if (!device_task_runner) {
video_capture_thread_.emplace("VideoCaptureThread");
#if defined(OS_WIN)
// Use an STA Video Capture Thread to try to avoid crashes on enumeration
// of buggy third party Direct Show modules, http://crbug.com/428958.
video_capture_thread_->init_com_with_mta(false);
#endif
CHECK(video_capture_thread_->Start());
device_task_runner = video_capture_thread_->task_runner();
}
#if defined(OS_CHROMEOS)
if (media::ShouldUseCrosCameraService()) {
media::VideoCaptureDeviceFactoryChromeOS::SetGpuBufferManager(
BrowserGpuMemoryBufferManager::current());
media::CameraHalDispatcherImpl::GetInstance()->Start(
base::BindRepeating(
&VideoCaptureDependencies::CreateJpegDecodeAccelerator),
base::BindRepeating(
&VideoCaptureDependencies::CreateJpegEncodeAccelerator));
}
#endif
if (base::FeatureList::IsEnabled(features::kMojoVideoCapture)) {
video_capture_provider = std::make_unique<VideoCaptureProviderSwitcher>(
std::make_unique<ServiceVideoCaptureProvider>(
base::BindRepeating(&SendVideoCaptureLogMessage)),
InProcessVideoCaptureProvider::CreateInstanceForNonDeviceCapture(
std::move(device_task_runner),
base::BindRepeating(&SendVideoCaptureLogMessage)));
} else {
video_capture::uma::LogVideoCaptureServiceEvent(
video_capture::uma::BROWSER_USING_LEGACY_CAPTURE);
video_capture_provider = InProcessVideoCaptureProvider::CreateInstance(
std::make_unique<media::VideoCaptureSystemImpl>(
media::CreateVideoCaptureDeviceFactory(
BrowserThread::GetTaskRunnerForThread(BrowserThread::UI))),
std::move(device_task_runner),
base::BindRepeating(&SendVideoCaptureLogMessage));
}
}
InitializeMaybeAsync(std::move(video_capture_provider));
// May be null in tests.
if (ServiceManagerConnection::GetForProcess()) {
audio_service_listener_ = std::make_unique<AudioServiceListener>(
ServiceManagerConnection::GetForProcess()->GetConnector()->Clone());
}
base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
// BrowserMainLoop always creates the PowerMonitor instance before creating
// MediaStreamManager, but power_monitor may be NULL in unit tests.
if (power_monitor)
power_monitor->AddObserver(this);
}
MediaStreamManager::~MediaStreamManager() {
DCHECK(!BrowserThread::IsThreadInitialized(BrowserThread::IO));
DVLOG(1) << "~MediaStreamManager";
DCHECK(requests_.empty());
base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
// The PowerMonitor instance owned by BrowserMainLoops always outlives the
// MediaStreamManager, but it may be NULL in unit tests.
if (power_monitor)
power_monitor->RemoveObserver(this);
}
VideoCaptureManager* MediaStreamManager::video_capture_manager() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(video_capture_manager_.get());
return video_capture_manager_.get();
}
AudioInputDeviceManager* MediaStreamManager::audio_input_device_manager() {
// May be called on any thread, provided that we are not in shutdown.
DCHECK(audio_input_device_manager_.get());
return audio_input_device_manager_.get();
}
AudioServiceListener* MediaStreamManager::audio_service_listener() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return audio_service_listener_.get();
}
MediaDevicesManager* MediaStreamManager::media_devices_manager() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// nullptr might be returned during shutdown.
return media_devices_manager_.get();
}
media::AudioSystem* MediaStreamManager::audio_system() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
return audio_system_;
}
void MediaStreamManager::AddVideoCaptureObserver(
media::VideoCaptureObserver* capture_observer) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (video_capture_manager_) {
video_capture_manager_->AddVideoCaptureObserver(capture_observer);
}
}
void MediaStreamManager::RemoveAllVideoCaptureObservers() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (video_capture_manager_) {
video_capture_manager_->RemoveAllVideoCaptureObservers();
}
}
std::string MediaStreamManager::MakeMediaAccessRequest(
int render_process_id,
int render_frame_id,
int page_request_id,
const StreamControls& controls,
const url::Origin& security_origin,
MediaAccessRequestCallback callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DeviceRequest* request = new DeviceRequest(
render_process_id, render_frame_id, page_request_id,
false /* user gesture */, MEDIA_DEVICE_ACCESS, controls,
MediaDeviceSaltAndOrigin{std::string() /* salt */,
std::string() /* group_id_salt */,
security_origin});
const std::string& label = AddRequest(request);
request->media_access_request_cb = std::move(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::BindOnce(&MediaStreamManager::SetUpRequest,
base::Unretained(this), label));
return label;
}
void MediaStreamManager::GenerateStream(
int render_process_id,
int render_frame_id,
int page_request_id,
const StreamControls& controls,
MediaDeviceSaltAndOrigin salt_and_origin,
bool user_gesture,
GenerateStreamCallback generate_stream_cb,
DeviceStoppedCallback device_stopped_cb) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "GenerateStream()";
DeviceRequest* request = new DeviceRequest(
render_process_id, render_frame_id, page_request_id, user_gesture,
MEDIA_GENERATE_STREAM, controls, std::move(salt_and_origin),
std::move(device_stopped_cb));
const std::string& label = AddRequest(request);
request->generate_stream_cb = std::move(generate_stream_cb);
if (generate_stream_test_callback_) {
// The test callback is responsible to verify whether the |controls| is
// as expected. Then we need to finish getUserMedia and let Javascript
// access the result.
if (std::move(generate_stream_test_callback_).Run(controls)) {
FinalizeGenerateStream(label, request);
} else {
FinalizeRequestFailed(label, request, MEDIA_DEVICE_INVALID_STATE);
}
return;
}
// 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::BindOnce(&MediaStreamManager::SetUpRequest,
base::Unretained(this), label));
}
void MediaStreamManager::CancelRequest(int render_process_id,
int render_frame_id,
int page_request_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
for (const LabeledDeviceRequest& labeled_request : requests_) {
DeviceRequest* const request = labeled_request.second;
if (request->requesting_process_id == render_process_id &&
request->requesting_frame_id == render_frame_id &&
request->page_request_id == page_request_id) {
CancelRequest(labeled_request.first);
return;
}
}
}
void MediaStreamManager::CancelRequest(const std::string& label) {
DCHECK_CURRENTLY_ON(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;
}
// This is a request for opening one or more devices.
for (const MediaStreamDevice& device : request->devices) {
const MediaRequestState state = request->state(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.type, device.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,
int render_frame_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DeviceRequests::iterator request_it = requests_.begin();
while (request_it != requests_.end()) {
if (request_it->second->requesting_process_id != render_process_id ||
request_it->second->requesting_frame_id != render_frame_id) {
++request_it;
continue;
}
const std::string label = request_it->first;
++request_it;
CancelRequest(label);
}
}
void MediaStreamManager::StopStreamDevice(int render_process_id,
int render_frame_id,
const std::string& device_id,
int session_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "StopStreamDevice({render_frame_id = " << render_frame_id << "} "
<< ", {device_id = " << device_id << "}, session_id = " << session_id
<< "})";
// Find the first request for this |render_process_id| and |render_frame_id|
// of type MEDIA_GENERATE_STREAM that has requested to use |device_id| and
// stop it.
for (const LabeledDeviceRequest& device_request : requests_) {
DeviceRequest* const request = device_request.second;
if (request->requesting_process_id != render_process_id ||
request->requesting_frame_id != render_frame_id ||
request->request_type != MEDIA_GENERATE_STREAM) {
continue;
}
for (const MediaStreamDevice& device : request->devices) {
if (device.id == device_id && device.session_id == session_id) {
StopDevice(device.type, device.session_id);
return;
}
}
}
}
int MediaStreamManager::VideoDeviceIdToSessionId(
const std::string& device_id) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
for (const LabeledDeviceRequest& device_request : requests_) {
for (const MediaStreamDevice& device : device_request.second->devices) {
if (device.id == device_id && device.type == MEDIA_DEVICE_VIDEO_CAPTURE) {
return device.session_id;
}
}
}
return MediaStreamDevice::kNoId;
}
void MediaStreamManager::StopDevice(MediaStreamType type, int session_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
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;
MediaStreamDevices* devices = &request->devices;
if (devices->empty()) {
// There is no device in use yet by this request.
++request_it;
continue;
}
MediaStreamDevices::iterator device_it = devices->begin();
while (device_it != devices->end()) {
if (device_it->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 after a device
// has been stopped above, remove the request. Note that the request is
// only deleted if a device as been removed from |devices|.
if (devices->empty()) {
std::string label = request_it->first;
++request_it;
DeleteRequest(label);
} else {
++request_it;
}
}
}
void MediaStreamManager::CloseDevice(MediaStreamType type, int session_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "CloseDevice("
<< "{type = " << type << "} "
<< "{session_id = " << session_id << "})";
GetDeviceManager(type)->Close(session_id);
for (const LabeledDeviceRequest& labeled_request : requests_) {
DeviceRequest* const request = labeled_request.second;
for (const MediaStreamDevice& device : request->devices) {
if (device.session_id == session_id && device.type == type) {
// Notify observers that this device is being closed.
// Note that only one device per type can be opened.
request->SetState(type, MEDIA_REQUEST_STATE_CLOSING);
}
}
}
}
void MediaStreamManager::OpenDevice(int render_process_id,
int render_frame_id,
int page_request_id,
const std::string& device_id,
MediaStreamType type,
MediaDeviceSaltAndOrigin salt_and_origin,
OpenDeviceCallback open_device_cb,
DeviceStoppedCallback device_stopped_cb) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(type == MEDIA_DEVICE_AUDIO_CAPTURE ||
type == MEDIA_DEVICE_VIDEO_CAPTURE);
DVLOG(1) << "OpenDevice ({page_request_id = " << page_request_id << "})";
StreamControls controls;
if (IsAudioInputMediaType(type)) {
controls.audio.requested = true;
controls.audio.stream_type = type;
controls.audio.device_id = device_id;
} else if (IsVideoInputMediaType(type)) {
controls.video.requested = true;
controls.video.stream_type = type;
controls.video.device_id = device_id;
} else {
NOTREACHED();
}
DeviceRequest* request = new DeviceRequest(
render_process_id, render_frame_id, page_request_id,
false /* user gesture */, MEDIA_OPEN_DEVICE_PEPPER_ONLY, controls,
std::move(salt_and_origin), std::move(device_stopped_cb));
const std::string& label = AddRequest(request);
request->open_device_cb = std::move(open_device_cb);
// 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::BindOnce(&MediaStreamManager::SetUpRequest,
base::Unretained(this), label));
}
bool MediaStreamManager::TranslateSourceIdToDeviceId(
MediaStreamType stream_type,
const std::string& salt,
const url::Origin& 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;
// TODO(guidou): Change to use MediaDevicesManager::EnumerateDevices.
// See http://crbug.com/648155.
MediaDeviceInfoArray cached_devices =
media_devices_manager_->GetCachedDeviceInfo(
ConvertToMediaDeviceType(stream_type));
return GetDeviceIDFromHMAC(salt, security_origin, source_id, cached_devices,
device_id);
}
void MediaStreamManager::EnsureDeviceMonitorStarted() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
media_devices_manager_->StartMonitoring();
}
void MediaStreamManager::StopRemovedDevice(
MediaDeviceType type,
const MediaDeviceInfo& media_device_info) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(type == MEDIA_DEVICE_TYPE_AUDIO_INPUT ||
type == MEDIA_DEVICE_TYPE_VIDEO_INPUT);
MediaStreamType stream_type = ConvertToMediaStreamType(type);
std::vector<int> session_ids;
for (const LabeledDeviceRequest& labeled_request : requests_) {
const DeviceRequest* request = labeled_request.second;
for (const MediaStreamDevice& device : request->devices) {
const std::string source_id = GetHMACForMediaDeviceID(
request->salt_and_origin.device_id_salt,
request->salt_and_origin.origin, media_device_info.device_id);
if (device.id == source_id && device.type == stream_type) {
session_ids.push_back(device.session_id);
if (request->device_stopped_cb) {
request->device_stopped_cb.Run(labeled_request.first, device);
}
}
}
}
for (const int session_id : session_ids)
StopDevice(stream_type, session_id);
AddLogMessageOnIOThread(
base::StringPrintf(
"Media input device removed: type=%s, id=%s, name=%s ",
(stream_type == MEDIA_DEVICE_AUDIO_CAPTURE ? "audio" : "video"),
media_device_info.device_id.c_str(), media_device_info.label.c_str())
.c_str());
}
bool MediaStreamManager::PickDeviceId(
const MediaDeviceSaltAndOrigin& salt_and_origin,
const TrackControls& controls,
const MediaDeviceInfoArray& devices,
std::string* device_id) const {
if (controls.device_id.empty())
return true;
if (!GetDeviceIDFromHMAC(salt_and_origin.device_id_salt,
salt_and_origin.origin, controls.device_id, devices,
device_id)) {
LOG(WARNING) << "Invalid device ID = " << controls.device_id;
return false;
}
return true;
}
bool MediaStreamManager::GetRequestedDeviceCaptureId(
const DeviceRequest* request,
MediaStreamType type,
const MediaDeviceInfoArray& devices,
std::string* device_id) const {
if (type == MEDIA_DEVICE_AUDIO_CAPTURE) {
return PickDeviceId(request->salt_and_origin, request->controls.audio,
devices, device_id);
} else if (type == MEDIA_DEVICE_VIDEO_CAPTURE) {
return PickDeviceId(request->salt_and_origin, request->controls.video,
devices, device_id);
} else {
NOTREACHED();
}
return false;
}
void MediaStreamManager::TranslateDeviceIdToSourceId(
DeviceRequest* request,
MediaStreamDevice* device) {
if (request->audio_type() == MEDIA_DEVICE_AUDIO_CAPTURE ||
request->video_type() == MEDIA_DEVICE_VIDEO_CAPTURE) {
device->id =
GetHMACForMediaDeviceID(request->salt_and_origin.device_id_salt,
request->salt_and_origin.origin, device->id);
if (device->group_id) {
device->group_id = GetHMACForMediaDeviceID(
request->salt_and_origin.group_id_salt,
request->salt_and_origin.origin, *device->group_id);
}
}
}
void MediaStreamManager::StartEnumeration(DeviceRequest* request,
const std::string& label) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Start monitoring the devices when doing the first enumeration.
media_devices_manager_->StartMonitoring();
// Start enumeration for devices of all requested device types.
bool request_audio_input = request->audio_type() != MEDIA_NO_SERVICE;
if (request_audio_input)
request->SetState(request->audio_type(), MEDIA_REQUEST_STATE_REQUESTED);
bool request_video_input = request->video_type() != MEDIA_NO_SERVICE;
if (request_video_input)
request->SetState(request->video_type(), MEDIA_REQUEST_STATE_REQUESTED);
// base::Unretained is safe here because MediaStreamManager is deleted on the
// UI thread, after the IO thread has been stopped.
DCHECK(request_audio_input || request_video_input);
MediaDevicesManager::BoolDeviceTypes devices_to_enumerate;
devices_to_enumerate[MEDIA_DEVICE_TYPE_AUDIO_INPUT] = request_audio_input;
devices_to_enumerate[MEDIA_DEVICE_TYPE_VIDEO_INPUT] = request_video_input;
media_devices_manager_->EnumerateDevices(
devices_to_enumerate,
base::BindOnce(&MediaStreamManager::DevicesEnumerated,
base::Unretained(this), request_audio_input,
request_video_input, label));
}
std::string MediaStreamManager::AddRequest(DeviceRequest* request) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Create a label for this request and verify it is unique.
std::string unique_label;
do {
unique_label = RandomLabel();
} while (FindRequest(unique_label) != nullptr);
requests_.push_back(std::make_pair(unique_label, request));
return unique_label;
}
MediaStreamManager::DeviceRequest* MediaStreamManager::FindRequest(
const std::string& label) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
for (const LabeledDeviceRequest& labeled_request : requests_) {
if (labeled_request.first == label)
return labeled_request.second;
}
return nullptr;
}
void MediaStreamManager::DeleteRequest(const std::string& label) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "DeleteRequest({label= " << label << "})";
for (DeviceRequests::iterator request_it = requests_.begin();
request_it != requests_.end(); ++request_it) {
if (request_it->first == label) {
std::unique_ptr<DeviceRequest> request(request_it->second);
requests_.erase(request_it);
return;
}
}
NOTREACHED();
}
void MediaStreamManager::ReadOutputParamsAndPostRequestToUI(
const std::string& label,
DeviceRequest* request,
const MediaDeviceEnumeration& enumeration) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Actual audio parameters are required only for MEDIA_TAB_AUDIO_CAPTURE.
// TODO(guidou): MEDIA_TAB_AUDIO_CAPTURE should not be a special case. See
// crbug.com/584287.
if (request->audio_type() == MEDIA_TAB_AUDIO_CAPTURE) {
// Using base::Unretained is safe: |audio_system_| will post
// PostRequestToUI() to IO thread, and MediaStreamManager is deleted on the
// UI thread, after the IO thread has been stopped.
audio_system_->GetOutputStreamParameters(
media::AudioDeviceDescription::kDefaultDeviceId,
base::BindOnce(&MediaStreamManager::PostRequestToUI,
base::Unretained(this), label, enumeration));
} else {
PostRequestToUI(label, enumeration,
base::Optional<media::AudioParameters>());
}
}
void MediaStreamManager::PostRequestToUI(
const std::string& label,
const MediaDeviceEnumeration& enumeration,
const base::Optional<media::AudioParameters>& output_parameters) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!output_parameters || output_parameters->IsValid());
DVLOG(1) << "PostRequestToUI({label= " << label << "})";
DeviceRequest* request = FindRequest(label);
if (!request)
return;
DCHECK(request->HasUIRequest());
const MediaStreamType audio_type = request->audio_type();
const MediaStreamType video_type = request->video_type();
// Post the request to UI and set the state.
if (IsAudioInputMediaType(audio_type))
request->SetState(audio_type, MEDIA_REQUEST_STATE_PENDING_APPROVAL);
if (IsVideoInputMediaType(video_type))
request->SetState(video_type, MEDIA_REQUEST_STATE_PENDING_APPROVAL);
// If using the fake UI, it will just auto-select from the available devices.
// The fake UI doesn't work for desktop sharing requests since we can't see
// its devices from here; always use the real UI for such requests.
if (fake_ui_factory_ &&
request->video_type() != MEDIA_DESKTOP_VIDEO_CAPTURE) {
MediaStreamDevices devices = ConvertToMediaStreamDevices(
request->audio_type(), enumeration[MEDIA_DEVICE_TYPE_AUDIO_INPUT]);
MediaStreamDevices video_devices = ConvertToMediaStreamDevices(
request->video_type(), enumeration[MEDIA_DEVICE_TYPE_VIDEO_INPUT]);
devices.reserve(devices.size() + video_devices.size());
devices.insert(devices.end(), video_devices.begin(), video_devices.end());
std::unique_ptr<FakeMediaStreamUIProxy> fake_ui = fake_ui_factory_.Run();
fake_ui->SetAvailableDevices(devices);
request->ui_proxy = std::move(fake_ui);
} else {
request->ui_proxy = MediaStreamUIProxy::Create();
}
request->ui_proxy->RequestAccess(
request->DetachUIRequest(),
base::BindOnce(&MediaStreamManager::HandleAccessRequestResponse,
base::Unretained(this), label,
output_parameters.value_or(
media::AudioParameters::UnavailableDeviceParams())));
}
void MediaStreamManager::SetUpRequest(const std::string& label) {
DCHECK_CURRENTLY_ON(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.
}
request->SetAudioType(AdjustAudioStreamTypeBasedOnCommandLineSwitches(
request->controls.audio.stream_type));
request->SetVideoType(request->controls.video.stream_type);
const bool is_tab_capture =
request->audio_type() == MEDIA_TAB_AUDIO_CAPTURE ||
request->video_type() == MEDIA_TAB_VIDEO_CAPTURE;
if (is_tab_capture) {
if (!SetUpTabCaptureRequest(request, label)) {
FinalizeRequestFailed(label, request, MEDIA_DEVICE_TAB_CAPTURE_FAILURE);
}
return;
}
const bool is_screen_capture =
request->video_type() == MEDIA_DESKTOP_VIDEO_CAPTURE;
if (is_screen_capture && !SetUpScreenCaptureRequest(request)) {
FinalizeRequestFailed(label, request, MEDIA_DEVICE_SCREEN_CAPTURE_FAILURE);
return;
}
if (!is_tab_capture && !is_screen_capture) {
if (IsDeviceMediaType(request->audio_type()) ||
IsDeviceMediaType(request->video_type())) {
StartEnumeration(request, label);
return;
}
// If no actual device capture is requested, set up the request with an
// empty device list.
if (!SetUpDeviceCaptureRequest(request, MediaDeviceEnumeration())) {
FinalizeRequestFailed(label, request, MEDIA_DEVICE_NO_HARDWARE);
return;
}
}
ReadOutputParamsAndPostRequestToUI(label, request, MediaDeviceEnumeration());
}
bool MediaStreamManager::SetUpDeviceCaptureRequest(
DeviceRequest* request,
const MediaDeviceEnumeration& enumeration) {
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->controls.audio.requested &&
!GetRequestedDeviceCaptureId(request, request->audio_type(),
enumeration[MEDIA_DEVICE_TYPE_AUDIO_INPUT],
&audio_device_id)) {
return false;
}
std::string video_device_id;
if (request->controls.video.requested &&
!GetRequestedDeviceCaptureId(request, request->video_type(),
enumeration[MEDIA_DEVICE_TYPE_VIDEO_INPUT],
&video_device_id)) {
return false;
}
request->CreateUIRequest(audio_device_id, video_device_id);
DVLOG(3) << "Audio requested " << request->controls.audio.requested
<< " device id = " << audio_device_id << "Video requested "
<< request->controls.video.requested
<< " device id = " << video_device_id;
return true;
}
bool MediaStreamManager::SetUpTabCaptureRequest(DeviceRequest* request,
const std::string& label) {
DCHECK(request->audio_type() == MEDIA_TAB_AUDIO_CAPTURE ||
request->video_type() == MEDIA_TAB_VIDEO_CAPTURE);
std::string capture_device_id;
if (!request->controls.audio.device_id.empty()) {
capture_device_id = request->controls.audio.device_id;
} else if (!request->controls.video.device_id.empty()) {
capture_device_id = request->controls.video.device_id;
} else {
return false;
}
if ((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;
}
BrowserThread::PostTaskAndReplyWithResult(
BrowserThread::UI, FROM_HERE,
base::BindOnce(&MediaStreamManager::ResolveTabCaptureDeviceIdOnUIThread,
base::Unretained(this), capture_device_id,
request->requesting_process_id,
request->requesting_frame_id,
request->salt_and_origin.origin.GetURL()),
base::BindOnce(
&MediaStreamManager::FinishTabCaptureRequestSetupWithDeviceId,
base::Unretained(this), label));
return true;
}
DesktopMediaID MediaStreamManager::ResolveTabCaptureDeviceIdOnUIThread(
const std::string& capture_device_id,
int requesting_process_id,
int requesting_frame_id,
const GURL& origin) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// Resolve DesktopMediaID for the specified device id.
return DesktopStreamsRegistry::GetInstance()->RequestMediaForStreamId(
capture_device_id, requesting_process_id, requesting_frame_id, origin,
nullptr);
}
void MediaStreamManager::FinishTabCaptureRequestSetupWithDeviceId(
const std::string& label,
const DesktopMediaID& device_id) {
DCHECK_CURRENTLY_ON(content::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.
}
// Received invalid device id.
if (device_id.type != content::DesktopMediaID::TYPE_WEB_CONTENTS) {
FinalizeRequestFailed(label, request, MEDIA_DEVICE_TAB_CAPTURE_FAILURE);
return;
}
content::WebContentsMediaCaptureId web_id = device_id.web_contents_id;
web_id.disable_local_echo = request->controls.disable_local_echo;
request->tab_capture_device_id = web_id.ToString();
request->CreateTabCaptureUIRequest(web_id.render_process_id,
web_id.main_render_frame_id);
DVLOG(3) << "SetUpTabCaptureRequest "
<< ", {capture_device_id = " << web_id.ToString() << "}"
<< ", {target_render_process_id = " << web_id.render_process_id
<< "}"
<< ", {target_render_frame_id = " << web_id.main_render_frame_id
<< "}";
ReadOutputParamsAndPostRequestToUI(label, request, MediaDeviceEnumeration());
}
bool MediaStreamManager::SetUpScreenCaptureRequest(DeviceRequest* request) {
DCHECK(request->audio_type() == MEDIA_DESKTOP_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_DESKTOP_AUDIO_CAPTURE)) {
LOG(ERROR) << "Invalid screen capture request.";
return false;
}
std::string video_device_id;
if (request->video_type() == MEDIA_DESKTOP_VIDEO_CAPTURE) {
if (!request->controls.video.device_id.empty()) {
video_device_id = request->controls.video.device_id;
}
}
const std::string audio_device_id =
request->audio_type() == MEDIA_DESKTOP_AUDIO_CAPTURE ? video_device_id
: "";
request->CreateUIRequest(audio_device_id, video_device_id);
return true;
}
MediaStreamDevices MediaStreamManager::GetDevicesOpenedByRequest(
const std::string& label) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DeviceRequest* request = FindRequest(label);
if (!request)
return MediaStreamDevices();
return request->devices;
}
bool MediaStreamManager::FindExistingRequestedDevice(
const DeviceRequest& new_request,
const MediaStreamDevice& new_device,
MediaStreamDevice* existing_device,
MediaRequestState* existing_request_state) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(existing_device);
DCHECK(existing_request_state);
std::string source_id = GetHMACForMediaDeviceID(
new_request.salt_and_origin.device_id_salt,
new_request.salt_and_origin.origin, new_device.id);
for (const LabeledDeviceRequest& labeled_request : requests_) {
const DeviceRequest* request = labeled_request.second;
if (request->requesting_process_id == new_request.requesting_process_id &&
request->requesting_frame_id == new_request.requesting_frame_id &&
request->request_type == new_request.request_type) {
for (const MediaStreamDevice& device : request->devices) {
if (device.id == source_id && device.type == new_device.type) {
*existing_device = device;
// Make sure that the audio |effects| reflect what the request
// is set to and not what the capabilities are.
int effects = existing_device->input.effects();
FilterAudioEffects(request->controls, &effects);
EnableHotwordEffect(request->controls, &effects);
existing_device->input.set_effects(effects);
*existing_request_state = request->state(device.type);
return true;
}
}
}
}
return false;
}
void MediaStreamManager::FinalizeGenerateStream(const std::string& label,
DeviceRequest* request) {
DVLOG(1) << "FinalizeGenerateStream label " << label;
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(request->generate_stream_cb);
// Partition the array of devices into audio vs video.
MediaStreamDevices audio_devices, video_devices;
for (const MediaStreamDevice& device : request->devices) {
if (IsAudioInputMediaType(device.type))
audio_devices.push_back(device);
else if (IsVideoInputMediaType(device.type))
video_devices.push_back(device);
else
NOTREACHED();
}
std::move(request->generate_stream_cb)
.Run(MEDIA_DEVICE_OK, label, audio_devices, video_devices);
}
void MediaStreamManager::FinalizeRequestFailed(
const std::string& label,
DeviceRequest* request,
MediaStreamRequestResult result) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
switch (request->request_type) {
case MEDIA_GENERATE_STREAM: {
DCHECK(request->generate_stream_cb);
std::move(request->generate_stream_cb)
.Run(result, std::string(), MediaStreamDevices(),
MediaStreamDevices());
break;
}
case MEDIA_OPEN_DEVICE_PEPPER_ONLY: {
if (request->open_device_cb) {
std::move(request->open_device_cb)
.Run(false /* success */, std::string(), MediaStreamDevice());
}
break;
}
case MEDIA_DEVICE_ACCESS: {
DCHECK(request->media_access_request_cb);
std::move(request->media_access_request_cb)
.Run(MediaStreamDevices(), std::move(request->ui_proxy));
break;
}
default:
NOTREACHED();
break;
}
DeleteRequest(label);
}
void MediaStreamManager::FinalizeOpenDevice(const std::string& label,
DeviceRequest* request) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (request->open_device_cb) {
std::move(request->open_device_cb)
.Run(true /* success */, label, request->devices.front());
}
}
void MediaStreamManager::FinalizeMediaAccessRequest(
const std::string& label,
DeviceRequest* request,
const MediaStreamDevices& devices) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(request->media_access_request_cb);
std::move(request->media_access_request_cb)
.Run(devices, std::move(request->ui_proxy));
// Delete the request since it is done.
DeleteRequest(label);
}
void MediaStreamManager::InitializeMaybeAsync(
std::unique_ptr<VideoCaptureProvider> video_capture_provider) {
// Some unit tests initialize the MSM in the IO thread and assume the
// initialization is done synchronously. Other clients call this from a
// different thread and expect initialization to run asynchronously.
if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::BindOnce(&MediaStreamManager::InitializeMaybeAsync,
base::Unretained(this),
std::move(video_capture_provider)));
return;
}
// Store a pointer to |this| on the IO thread to avoid having to jump to the
// UI thread to fetch a pointer to the MSM. In particular on Android, it can
// be problematic to post to a UI thread from arbitrary worker threads since
// attaching to the VM is required and we may have to access the MSM from
// callback threads that we don't own and don't want to attach.
g_media_stream_manager_tls_ptr.Pointer()->Set(this);
audio_input_device_manager_ = new AudioInputDeviceManager(audio_system_);
audio_input_device_manager_->RegisterListener(this);
// We want to be notified of IO message loop destruction to delete the thread
// and the device managers.
base::MessageLoopCurrent::Get()->AddDestructionObserver(this);
video_capture_manager_ =
new VideoCaptureManager(std::move(video_capture_provider),
base::BindRepeating(&SendVideoCaptureLogMessage));
video_capture_manager_->RegisterListener(this);
// Using base::Unretained(this) is safe because |this| owns and therefore
// outlives |media_devices_manager_|.
media_devices_manager_.reset(new MediaDevicesManager(
audio_system_, video_capture_manager_,
base::BindRepeating(&MediaStreamManager::StopRemovedDevice,
base::Unretained(this)),
base::BindRepeating(&MediaStreamManager::NotifyDevicesChanged,
base::Unretained(this))));
}
void MediaStreamManager::Opened(MediaStreamType stream_type,
int capture_session_id) {
DCHECK_CURRENTLY_ON(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 (const LabeledDeviceRequest& labeled_request : requests_) {
const std::string& label = labeled_request.first;
DeviceRequest* request = labeled_request.second;
for (MediaStreamDevice& device : request->devices) {
if (device.type == stream_type &&
device.session_id == capture_session_id) {
CHECK(request->state(device.type) == MEDIA_REQUEST_STATE_OPENING);
// We've found a matching request.
request->SetState(device.type, MEDIA_REQUEST_STATE_DONE);
if (IsAudioInputMediaType(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.type != MEDIA_TAB_AUDIO_CAPTURE) {
const MediaStreamDevice* opened_device =
audio_input_device_manager_->GetOpenedDeviceById(
device.session_id);
device.input = opened_device->input;
// Since the audio input device manager will set the input
// parameters to the default settings (including supported effects),
// we need to adjust those settings here according to what the
// request asks for.
int effects = device.input.effects();
FilterAudioEffects(request->controls, &effects);
EnableHotwordEffect(request->controls, &effects);
device.input.set_effects(effects);
}
}
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_PEPPER_ONLY:
FinalizeOpenDevice(label, request);
OnStreamStarted(label);
break;
case MEDIA_GENERATE_STREAM: {
FinalizeGenerateStream(label, request);
break;
}
default:
NOTREACHED();
break;
}
}
void MediaStreamManager::Closed(MediaStreamType stream_type,
int capture_session_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
}
void MediaStreamManager::DevicesEnumerated(
bool requested_audio_input,
bool requested_video_input,
const std::string& label,
const MediaDeviceEnumeration& enumeration) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DeviceRequest* request = FindRequest(label);
if (!request)
return;
bool requested[] = {requested_audio_input, requested_video_input};
MediaStreamType stream_types[] = {MEDIA_DEVICE_AUDIO_CAPTURE,
MEDIA_DEVICE_VIDEO_CAPTURE};
for (size_t i = 0; i < arraysize(requested); ++i) {
if (!requested[i])
continue;
DCHECK(request->audio_type() == stream_types[i] ||
request->video_type() == stream_types[i]);
if (request->state(stream_types[i]) == MEDIA_REQUEST_STATE_REQUESTED) {
request->SetState(stream_types[i], MEDIA_REQUEST_STATE_PENDING_APPROVAL);
}
}
if (!SetUpDeviceCaptureRequest(request, enumeration))
FinalizeRequestFailed(label, request, MEDIA_DEVICE_NO_HARDWARE);
else
ReadOutputParamsAndPostRequestToUI(label, request, enumeration);
}
void MediaStreamManager::Aborted(MediaStreamType stream_type,
int capture_session_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DVLOG(1) << "Aborted({stream_type = " << stream_type << "} "
<< "{capture_session_id = " << capture_session_id << "})";
StopDevice(stream_type, capture_session_id);
}
void MediaStreamManager::OnSuspend() {
SendMessageToNativeLog("Power state suspended.");
}
void MediaStreamManager::OnResume() {
SendMessageToNativeLog("Power state resumed.");
}
void MediaStreamManager::UseFakeUIFactoryForTests(
base::Callback<std::unique_ptr<FakeMediaStreamUIProxy>(void)>
fake_ui_factory) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
fake_ui_factory_ = std::move(fake_ui_factory);
}
// static
void MediaStreamManager::RegisterNativeLogCallback(
int renderer_host_id,
const base::Callback<void(const std::string&)>& callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
MediaStreamManager* msm = g_media_stream_manager_tls_ptr.Pointer()->Get();
if (!msm) {
DLOG(ERROR) << "No MediaStreamManager on the IO thread.";
return;
}
msm->DoNativeLogCallbackRegistration(renderer_host_id, callback);
}
// static
void MediaStreamManager::UnregisterNativeLogCallback(int renderer_host_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
MediaStreamManager* msm = g_media_stream_manager_tls_ptr.Pointer()->Get();
if (!msm) {
DLOG(ERROR) << "No MediaStreamManager on the IO thread.";
return;
}
msm->DoNativeLogCallbackUnregistration(renderer_host_id);
}
void MediaStreamManager::AddLogMessageOnIOThread(const std::string& message) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
for (const auto& callback : log_callbacks_)
callback.second.Run(message);
}
void MediaStreamManager::HandleAccessRequestResponse(
const std::string& label,
const media::AudioParameters& output_parameters,
const MediaStreamDevices& devices,
MediaStreamRequestResult result) {
DCHECK_CURRENTLY_ON(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 (result != MEDIA_DEVICE_OK) {
FinalizeRequestFailed(label, request, result);
return;
}
DCHECK(!devices.empty());
// Process all newly-accepted devices for this request.
bool found_audio = false;
bool found_video = false;
for (const MediaStreamDevice& media_stream_device : devices) {
MediaStreamDevice device = media_stream_device;
if (device.type == MEDIA_TAB_VIDEO_CAPTURE ||
device.type == MEDIA_TAB_AUDIO_CAPTURE) {
device.id = request->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.type == MEDIA_TAB_AUDIO_CAPTURE ||
device.type == MEDIA_DESKTOP_AUDIO_CAPTURE) {
int sample_rate = output_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;
media::AudioParameters params(device.input.format(),
media::CHANNEL_LAYOUT_STEREO, sample_rate,
device.input.frames_per_buffer());
params.set_effects(device.input.effects());
params.set_mic_positions(device.input.mic_positions());
DCHECK(params.IsValid());
device.input = params;
}
if (device.type == request->audio_type())
found_audio = true;
else if (device.type == request->video_type())
found_video = true;
// If this is request for a new MediaStream, a device is only opened once
// per render frame. 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 (FindExistingRequestedDevice(*request, device, &device, &state)) {
request->devices.push_back(device);
request->SetState(device.type, state);
DVLOG(1) << "HandleAccessRequestResponse - device already opened "
<< ", {label = " << label << "}"
<< ", device_id = " << device.id << "}";
continue;
}
}
device.session_id = GetDeviceManager(device.type)->Open(device);
TranslateDeviceIdToSourceId(request, &device);
request->devices.push_back(device);
request->SetState(device.type, MEDIA_REQUEST_STATE_OPENING);
DVLOG(1) << "HandleAccessRequestResponse - opening device "
<< ", {label = " << label << "}"
<< ", {device_id = " << device.id << "}"
<< ", {session_id = " << device.session_id << "}";
}
// Check whether we've received all stream types requested.
if (!found_audio && IsAudioInputMediaType(request->audio_type())) {
request->SetState(request->audio_type(), MEDIA_REQUEST_STATE_ERROR);
DVLOG(1) << "Set no audio found label " << label;
}
if (!found_video && IsVideoInputMediaType(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_CURRENTLY_ON(BrowserThread::IO);
DeviceRequest* request = FindRequest(label);
if (!request)
return;
// Notify renderers that the devices in the stream will be stopped.
if (request->device_stopped_cb) {
for (const MediaStreamDevice& device : request->devices) {
request->device_stopped_cb.Run(label, device);
}
}
CancelRequest(label);
}
void MediaStreamManager::WillDestroyCurrentMessageLoop() {
DVLOG(3) << "MediaStreamManager::WillDestroyCurrentMessageLoop()";
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO) ||
!BrowserThread::IsThreadInitialized(BrowserThread::IO));
if (media_devices_manager_)
media_devices_manager_->StopMonitoring();
if (video_capture_manager_)
video_capture_manager_->UnregisterListener(this);
if (audio_input_device_manager_)
audio_input_device_manager_->UnregisterListener(this);
audio_input_device_manager_ = nullptr;
video_capture_manager_ = nullptr;
media_devices_manager_ = nullptr;
g_media_stream_manager_tls_ptr.Pointer()->Set(nullptr);
requests_.clear();
}
void MediaStreamManager::NotifyDevicesChanged(
MediaDeviceType device_type,
const MediaDeviceInfoArray& devices) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
MediaObserver* media_observer =
GetContentClient()->browser()->GetMediaObserver();
MediaStreamType stream_type = ConvertToMediaStreamType(device_type);
MediaStreamDevices new_devices =
ConvertToMediaStreamDevices(stream_type, devices);
if (IsAudioInputMediaType(stream_type)) {
MediaCaptureDevicesImpl::GetInstance()->OnAudioCaptureDevicesChanged(
new_devices);
if (media_observer)
media_observer->OnAudioCaptureDevicesChanged();
} else if (IsVideoInputMediaType(stream_type)) {
MediaCaptureDevicesImpl::GetInstance()->OnVideoCaptureDevicesChanged(
new_devices);
if (media_observer)
media_observer->OnVideoCaptureDevicesChanged();
} else {
NOTREACHED();
}
}
bool MediaStreamManager::RequestDone(const DeviceRequest& request) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
const bool requested_audio = IsAudioInputMediaType(request.audio_type());
const bool requested_video = IsVideoInputMediaType(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 (IsVideoInputMediaType(stream_type))
return video_capture_manager();
else if (IsAudioInputMediaType(stream_type))
return audio_input_device_manager();
NOTREACHED();
return nullptr;
}
void MediaStreamManager::OnMediaStreamUIWindowId(
MediaStreamType video_type,
const MediaStreamDevices& devices,
gfx::NativeViewId window_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (!window_id)
return;
if (video_type != MEDIA_DESKTOP_VIDEO_CAPTURE)
return;
// Pass along for desktop screen and window capturing when
// DesktopCaptureDevice is used.
for (const MediaStreamDevice& device : devices) {
if (device.type != MEDIA_DESKTOP_VIDEO_CAPTURE)
continue;
DesktopMediaID media_id = DesktopMediaID::Parse(device.id);
// WebContentsVideoCaptureDevice is used for tab/webcontents.
if (media_id.type == DesktopMediaID::TYPE_WEB_CONTENTS)
continue;
#if defined(USE_AURA)
// DesktopCaptureDevicAura is used when aura_id is valid.
if (media_id.aura_id > DesktopMediaID::kNullId)
continue;
#endif
video_capture_manager_->SetDesktopCaptureWindowId(device.session_id,
window_id);
break;
}
}
void MediaStreamManager::DoNativeLogCallbackRegistration(
int renderer_host_id,
const base::Callback<void(const std::string&)>& callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Re-registering (overwriting) is allowed and happens in some tests.
log_callbacks_[renderer_host_id] = callback;
}
void MediaStreamManager::DoNativeLogCallbackUnregistration(
int renderer_host_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
log_callbacks_.erase(renderer_host_id);
}
// static
std::string MediaStreamManager::GetHMACForMediaDeviceID(
const std::string& salt,
const url::Origin& security_origin,
const std::string& raw_unique_id) {
DCHECK(!raw_unique_id.empty());
if (raw_unique_id == media::AudioDeviceDescription::kDefaultDeviceId ||
raw_unique_id == media::AudioDeviceDescription::kCommunicationsDeviceId) {
return raw_unique_id;
}
crypto::HMAC hmac(crypto::HMAC::SHA256);
const size_t digest_length = hmac.DigestLength();
std::vector<uint8_t> digest(digest_length);
bool result = hmac.Init(security_origin.Serialize()) &&
hmac.Sign(raw_unique_id + salt, &digest[0], digest.size());
DCHECK(result);
return base::ToLowerASCII(base::HexEncode(&digest[0], digest.size()));
}
// static
bool MediaStreamManager::DoesMediaDeviceIDMatchHMAC(
const std::string& salt,
const url::Origin& security_origin,
const std::string& device_guid,
const std::string& raw_unique_id) {
DCHECK(!raw_unique_id.empty());
std::string guid_from_raw_device_id =
GetHMACForMediaDeviceID(salt, security_origin, raw_unique_id);
return guid_from_raw_device_id == device_guid;
}
// static
bool MediaStreamManager::IsOriginAllowed(int render_process_id,
const url::Origin& origin) {
if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
render_process_id, origin.GetURL())) {
LOG(ERROR) << "MSM: Renderer requested a URL it's not allowed to use: "
<< origin.Serialize();
return false;
}
return true;
}
void MediaStreamManager::SetCapturingLinkSecured(int render_process_id,
int session_id,
MediaStreamType type,
bool is_secure) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
for (LabeledDeviceRequest& labeled_request : requests_) {
DeviceRequest* request = labeled_request.second;
if (request->requesting_process_id != render_process_id)
continue;
for (const MediaStreamDevice& device : request->devices) {
if (device.session_id == session_id && device.type == type) {
request->SetCapturingLinkSecured(is_secure);
return;
}
}
}
}
void MediaStreamManager::SetGenerateStreamCallbackForTesting(
GenerateStreamTestCallback test_callback) {
generate_stream_test_callback_ = std::move(test_callback);
}
MediaStreamDevices MediaStreamManager::ConvertToMediaStreamDevices(
MediaStreamType stream_type,
const MediaDeviceInfoArray& device_infos) {
MediaStreamDevices devices;
for (const auto& info : device_infos) {
devices.emplace_back(stream_type, info.device_id, info.label,
info.video_facing, info.group_id);
}
if (stream_type != MEDIA_DEVICE_VIDEO_CAPTURE)
return devices;
for (auto& device : devices) {
device.camera_calibration =
video_capture_manager()->GetCameraCalibration(device.id);
}
return devices;
}
void MediaStreamManager::OnStreamStarted(const std::string& label) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DeviceRequest* const request = FindRequest(label);
if (!request)
return;
if (request->ui_proxy) {
request->ui_proxy->OnStarted(
base::BindOnce(&MediaStreamManager::StopMediaStreamFromBrowser,
base::Unretained(this), label),
base::BindOnce(&MediaStreamManager::OnMediaStreamUIWindowId,
base::Unretained(this), request->video_type(),
request->devices));
}
}
} // namespace content