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// Copyright 2014 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 "chrome/browser/ui/ash/media_client.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "chrome/browser/chromeos/extensions/media_player_api.h"
#include "chrome/browser/chromeos/extensions/media_player_event_router.h"
#include "chrome/browser/media/webrtc/media_stream_capture_indicator.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/ash/ash_util.h"
#include "chrome/browser/ui/ash/chrome_shell_content_state.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "components/user_manager/user_manager.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/service_manager_connection.h"
#include "extensions/browser/app_window/app_window.h"
#include "extensions/browser/app_window/app_window_registry.h"
#include "extensions/browser/process_manager.h"
#include "services/service_manager/public/cpp/connector.h"
using ash::mojom::MediaCaptureState;
namespace {
MediaCaptureState& operator|=(MediaCaptureState& lhs, MediaCaptureState rhs) {
lhs = static_cast<MediaCaptureState>(static_cast<int>(lhs) |
static_cast<int>(rhs));
return lhs;
}
void GetMediaCaptureState(const MediaStreamCaptureIndicator* indicator,
content::WebContents* web_contents,
MediaCaptureState* media_state_out) {
bool video = indicator->IsCapturingVideo(web_contents);
bool audio = indicator->IsCapturingAudio(web_contents);
if (video)
*media_state_out |= MediaCaptureState::VIDEO;
if (audio)
*media_state_out |= MediaCaptureState::AUDIO;
}
void GetBrowserMediaCaptureState(const MediaStreamCaptureIndicator* indicator,
const content::BrowserContext* context,
MediaCaptureState* media_state_out) {
const BrowserList* desktop_list = BrowserList::GetInstance();
for (BrowserList::BrowserVector::const_iterator iter = desktop_list->begin();
iter != desktop_list->end(); ++iter) {
TabStripModel* tab_strip_model = (*iter)->tab_strip_model();
for (int i = 0; i < tab_strip_model->count(); ++i) {
content::WebContents* web_contents = tab_strip_model->GetWebContentsAt(i);
if (web_contents->GetBrowserContext() != context)
continue;
GetMediaCaptureState(indicator, web_contents, media_state_out);
if (*media_state_out == MediaCaptureState::AUDIO_VIDEO)
return;
}
}
}
void GetAppMediaCaptureState(const MediaStreamCaptureIndicator* indicator,
content::BrowserContext* context,
MediaCaptureState* media_state_out) {
const extensions::AppWindowRegistry::AppWindowList& apps =
extensions::AppWindowRegistry::Get(context)->app_windows();
for (extensions::AppWindowRegistry::AppWindowList::const_iterator iter =
apps.begin();
iter != apps.end(); ++iter) {
GetMediaCaptureState(indicator, (*iter)->web_contents(), media_state_out);
if (*media_state_out == MediaCaptureState::AUDIO_VIDEO)
return;
}
}
void GetExtensionMediaCaptureState(const MediaStreamCaptureIndicator* indicator,
content::BrowserContext* context,
MediaCaptureState* media_state_out) {
for (content::RenderFrameHost* host :
extensions::ProcessManager::Get(context)->GetAllFrames()) {
content::WebContents* web_contents =
content::WebContents::FromRenderFrameHost(host);
// RFH may not have web contents.
if (!web_contents)
continue;
GetMediaCaptureState(indicator, web_contents, media_state_out);
if (*media_state_out == MediaCaptureState::AUDIO_VIDEO)
return;
}
}
MediaCaptureState GetMediaCaptureStateOfAllWebContents(
content::BrowserContext* context) {
if (!context)
return MediaCaptureState::NONE;
scoped_refptr<MediaStreamCaptureIndicator> indicator =
MediaCaptureDevicesDispatcher::GetInstance()
->GetMediaStreamCaptureIndicator();
MediaCaptureState media_state = MediaCaptureState::NONE;
// Browser windows
GetBrowserMediaCaptureState(indicator.get(), context, &media_state);
if (media_state == MediaCaptureState::AUDIO_VIDEO)
return MediaCaptureState::AUDIO_VIDEO;
// App windows
GetAppMediaCaptureState(indicator.get(), context, &media_state);
if (media_state == MediaCaptureState::AUDIO_VIDEO)
return MediaCaptureState::AUDIO_VIDEO;
// Extensions
GetExtensionMediaCaptureState(indicator.get(), context, &media_state);
return media_state;
}
} // namespace
MediaClient::MediaClient() : binding_(this), weak_ptr_factory_(this) {
MediaCaptureDevicesDispatcher::GetInstance()->AddObserver(this);
service_manager::Connector* connector =
content::ServiceManagerConnection::GetForProcess()->GetConnector();
connector->BindInterface(ash_util::GetAshServiceName(), &media_controller_);
// Register this object as the client interface implementation.
ash::mojom::MediaClientAssociatedPtrInfo ptr_info;
binding_.Bind(&ptr_info, media_controller_.associated_group());
media_controller_->SetClient(std::move(ptr_info));
}
MediaClient::~MediaClient() {
MediaCaptureDevicesDispatcher::GetInstance()->RemoveObserver(this);
}
void MediaClient::HandleMediaNextTrack() {
extensions::MediaPlayerAPI::Get(ProfileManager::GetActiveUserProfile())
->media_player_event_router()
->NotifyNextTrack();
}
void MediaClient::HandleMediaPlayPause() {
extensions::MediaPlayerAPI::Get(ProfileManager::GetActiveUserProfile())
->media_player_event_router()
->NotifyTogglePlayState();
}
void MediaClient::HandleMediaPrevTrack() {
extensions::MediaPlayerAPI::Get(ProfileManager::GetActiveUserProfile())
->media_player_event_router()
->NotifyPrevTrack();
}
void MediaClient::RequestCaptureState() {
// TODO(erg): Ash doesn't have stable user indexes. Given the asynchronous
// nature of sending messages over mojo pipes, this could theoretically cause
// bad data, as one side thinks the vector is [user1, user2] while the other
// thinks [user2, user1]. However, since parts of this system are already
// asynchronous (see OnRequestUpdate's PostTask()), we're not worrying about
// this right now.
std::vector<MediaCaptureState> state;
for (uint32_t i = 0;
i < user_manager::UserManager::Get()->GetLoggedInUsers().size(); ++i) {
state.push_back(
GetMediaCaptureStateByIndex(static_cast<ash::UserIndex>(i)));
}
media_controller_->NotifyCaptureState(std::move(state));
}
void MediaClient::OnRequestUpdate(int render_process_id,
int render_frame_id,
content::MediaStreamType stream_type,
const content::MediaRequestState state) {
DCHECK(base::MessageLoopForUI::IsCurrent());
// The PostTask is necessary because the state of MediaStreamCaptureIndicator
// gets updated after this.
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::Bind(&MediaClient::RequestCaptureState,
weak_ptr_factory_.GetWeakPtr()));
}
MediaCaptureState MediaClient::GetMediaCaptureStateByIndex(int user_index) {
content::BrowserContext* context =
ChromeShellContentState::GetInstance()->GetBrowserContextByIndex(
user_index);
return GetMediaCaptureStateOfAllWebContents(context);
}
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