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// Copyright 2016 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/webui/settings/settings_media_devices_selection_handler.h"
#include <stddef.h>
#include <memory>
#include <utility>
#include "base/bind.h"
#include "base/macros.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "extensions/strings/grit/extensions_strings.h"
#include "ui/base/l10n/l10n_util.h"
#endif
namespace {
const char kAudio[] = "mic";
const char kVideo[] = "camera";
} // namespace
namespace settings {
MediaDevicesSelectionHandler::MediaDevicesSelectionHandler(Profile* profile)
: profile_(profile), observer_(this) {
}
MediaDevicesSelectionHandler::~MediaDevicesSelectionHandler() {
}
void MediaDevicesSelectionHandler::OnJavascriptAllowed() {
// Register to the device observer list to get up-to-date device lists.
observer_.Add(MediaCaptureDevicesDispatcher::GetInstance());
}
void MediaDevicesSelectionHandler::OnJavascriptDisallowed() {
observer_.RemoveAll();
}
void MediaDevicesSelectionHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"getDefaultCaptureDevices",
base::BindRepeating(
&MediaDevicesSelectionHandler::GetDefaultCaptureDevices,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"setDefaultCaptureDevice",
base::BindRepeating(
&MediaDevicesSelectionHandler::SetDefaultCaptureDevice,
base::Unretained(this)));
}
void MediaDevicesSelectionHandler::OnUpdateAudioDevices(
const blink::MediaStreamDevices& devices) {
UpdateDevicesMenu(AUDIO, devices);
}
void MediaDevicesSelectionHandler::OnUpdateVideoDevices(
const blink::MediaStreamDevices& devices) {
UpdateDevicesMenu(VIDEO, devices);
}
void MediaDevicesSelectionHandler::GetDefaultCaptureDevices(
const base::ListValue* args) {
DCHECK_EQ(1U, args->GetSize());
std::string type;
if (!args->GetString(0, &type)) {
NOTREACHED();
return;
}
DCHECK(!type.empty());
if (type == kAudio)
UpdateDevicesMenuForType(AUDIO);
else if (type == kVideo)
UpdateDevicesMenuForType(VIDEO);
}
void MediaDevicesSelectionHandler::SetDefaultCaptureDevice(
const base::ListValue* args) {
DCHECK_EQ(2U, args->GetSize());
std::string type, device;
if (!(args->GetString(0, &type) && args->GetString(1, &device))) {
NOTREACHED();
return;
}
DCHECK(!type.empty());
DCHECK(!device.empty());
PrefService* prefs = profile_->GetPrefs();
if (type == kAudio)
prefs->SetString(prefs::kDefaultAudioCaptureDevice, device);
else if (type == kVideo)
prefs->SetString(prefs::kDefaultVideoCaptureDevice, device);
else
NOTREACHED();
}
void MediaDevicesSelectionHandler::UpdateDevicesMenu(
DeviceType type,
const blink::MediaStreamDevices& devices) {
AllowJavascript();
// Get the default device unique id from prefs.
PrefService* prefs = profile_->GetPrefs();
std::string default_device;
std::string device_type;
switch (type) {
case AUDIO:
default_device = prefs->GetString(prefs::kDefaultAudioCaptureDevice);
device_type = kAudio;
break;
case VIDEO:
default_device = prefs->GetString(prefs::kDefaultVideoCaptureDevice);
device_type = kVideo;
break;
}
// Build the list of devices to send to JS.
std::string default_id;
base::ListValue device_list;
for (size_t i = 0; i < devices.size(); ++i) {
std::unique_ptr<base::DictionaryValue> entry(new base::DictionaryValue());
entry->SetString("name", GetDeviceDisplayName(devices[i]));
entry->SetString("id", devices[i].id);
device_list.Append(std::move(entry));
if (devices[i].id == default_device)
default_id = default_device;
}
// Use the first device as the default device if the preferred default device
// does not exist in the OS.
if (!devices.empty() && default_id.empty())
default_id = devices[0].id;
base::Value default_value(default_id);
base::Value type_value(device_type);
FireWebUIListener("updateDevicesMenu", type_value, device_list,
default_value);
}
std::string MediaDevicesSelectionHandler::GetDeviceDisplayName(
const blink::MediaStreamDevice& device) const {
std::string facing_info;
#if BUILDFLAG(ENABLE_EXTENSIONS)
switch (device.video_facing) {
case media::VideoFacingMode::MEDIA_VIDEO_FACING_USER:
facing_info = l10n_util::GetStringUTF8(IDS_CAMERA_FACING_USER);
break;
case media::VideoFacingMode::MEDIA_VIDEO_FACING_ENVIRONMENT:
facing_info = l10n_util::GetStringUTF8(IDS_CAMERA_FACING_ENVIRONMENT);
break;
case media::VideoFacingMode::MEDIA_VIDEO_FACING_NONE:
break;
case media::VideoFacingMode::NUM_MEDIA_VIDEO_FACING_MODES:
NOTREACHED();
break;
}
#endif
if (facing_info.empty())
return device.name;
return device.name + " " + facing_info;
}
void MediaDevicesSelectionHandler::UpdateDevicesMenuForType(DeviceType type) {
blink::MediaStreamDevices devices;
switch (type) {
case AUDIO:
devices = MediaCaptureDevicesDispatcher::GetInstance()->
GetAudioCaptureDevices();
break;
case VIDEO:
devices = MediaCaptureDevicesDispatcher::GetInstance()->
GetVideoCaptureDevices();
break;
}
UpdateDevicesMenu(type, devices);
}
} // namespace settings
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