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media_stream_devices_controller.cc
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media_stream_devices_controller.cc
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE-CHROMIUM file.
#include "shell/browser/media/media_stream_devices_controller.h"
#include <memory>
#include <utility>
#include "chrome/browser/media/webrtc/desktop_media_list.h"
#include "chrome/browser/media/webrtc/native_desktop_media_list.h"
#include "content/public/browser/desktop_capture.h"
#include "content/public/browser/desktop_media_id.h"
#include "content/public/browser/media_stream_request.h"
#include "shell/browser/electron_browser_context.h"
#include "shell/browser/media/media_capture_devices_dispatcher.h"
#include "third_party/blink/public/mojom/mediastream/media_stream.mojom.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_capturer.h"
namespace electron {
namespace {
bool HasAnyAvailableDevice() {
const blink::MediaStreamDevices& audio_devices =
MediaCaptureDevicesDispatcher::GetInstance()->GetAudioCaptureDevices();
const blink::MediaStreamDevices& video_devices =
MediaCaptureDevicesDispatcher::GetInstance()->GetVideoCaptureDevices();
return !(audio_devices.empty() && video_devices.empty());
}
} // namespace
MediaStreamDevicesController::MediaStreamDevicesController(
const content::MediaStreamRequest& request,
content::MediaResponseCallback callback)
: request_(request),
callback_(std::move(callback)),
// For MEDIA_OPEN_DEVICE requests (Pepper) we always request both webcam
// and microphone to avoid popping two infobars.
microphone_requested_(
request.audio_type ==
blink::mojom::MediaStreamType::DEVICE_AUDIO_CAPTURE ||
request.request_type == blink::MEDIA_OPEN_DEVICE_PEPPER_ONLY),
webcam_requested_(
request.video_type ==
blink::mojom::MediaStreamType::DEVICE_VIDEO_CAPTURE ||
request.request_type == blink::MEDIA_OPEN_DEVICE_PEPPER_ONLY) {}
MediaStreamDevicesController::~MediaStreamDevicesController() {
if (!callback_.is_null()) {
std::move(callback_).Run(
blink::MediaStreamDevices(),
blink::mojom::MediaStreamRequestResult::FAILED_DUE_TO_SHUTDOWN,
std::unique_ptr<content::MediaStreamUI>());
}
}
void MediaStreamDevicesController::TakeAction() {
// Do special handling of desktop screen cast.
if (request_.audio_type ==
blink::mojom::MediaStreamType::GUM_TAB_AUDIO_CAPTURE ||
request_.video_type ==
blink::mojom::MediaStreamType::GUM_TAB_VIDEO_CAPTURE ||
request_.audio_type ==
blink::mojom::MediaStreamType::GUM_DESKTOP_AUDIO_CAPTURE ||
request_.video_type ==
blink::mojom::MediaStreamType::GUM_DESKTOP_VIDEO_CAPTURE) {
HandleUserMediaRequest();
return;
}
content::RenderFrameHost* rfh = content::RenderFrameHost::FromID(
request_.render_process_id, request_.render_frame_id);
if (!rfh)
return;
content::BrowserContext* browser_context = rfh->GetBrowserContext();
ElectronBrowserContext* electron_browser_context =
static_cast<ElectronBrowserContext*>(browser_context);
if (electron_browser_context->ChooseMediaDevice(request_,
std::move(callback_)))
return;
// Deny the request if there is no device attached to the OS.
if (HasAnyAvailableDevice())
Accept();
else
Deny(blink::mojom::MediaStreamRequestResult::NO_HARDWARE);
}
void MediaStreamDevicesController::Accept() {
// Get the default devices for the request.
blink::MediaStreamDevices devices;
if (microphone_requested_ || webcam_requested_) {
switch (request_.request_type) {
case blink::MEDIA_OPEN_DEVICE_PEPPER_ONLY: {
const blink::MediaStreamDevice* device = nullptr;
// For open device request pick the desired device or fall back to the
// first available of the given type.
if (request_.audio_type ==
blink::mojom::MediaStreamType::DEVICE_AUDIO_CAPTURE) {
device =
MediaCaptureDevicesDispatcher::GetInstance()
->GetRequestedAudioDevice(request_.requested_audio_device_id);
// TODO(wjia): Confirm this is the intended behavior.
if (!device) {
device = MediaCaptureDevicesDispatcher::GetInstance()
->GetFirstAvailableAudioDevice();
}
} else if (request_.video_type ==
blink::mojom::MediaStreamType::DEVICE_VIDEO_CAPTURE) {
// Pepper API opens only one device at a time.
device =
MediaCaptureDevicesDispatcher::GetInstance()
->GetRequestedVideoDevice(request_.requested_video_device_id);
// TODO(wjia): Confirm this is the intended behavior.
if (!device) {
device = MediaCaptureDevicesDispatcher::GetInstance()
->GetFirstAvailableVideoDevice();
}
}
if (device)
devices.push_back(*device);
break;
}
case blink::MEDIA_GENERATE_STREAM: {
bool needs_audio_device = microphone_requested_;
bool needs_video_device = webcam_requested_;
// Get the exact audio or video device if an id is specified.
if (!request_.requested_audio_device_id.empty()) {
const blink::MediaStreamDevice* audio_device =
MediaCaptureDevicesDispatcher::GetInstance()
->GetRequestedAudioDevice(request_.requested_audio_device_id);
if (audio_device) {
devices.push_back(*audio_device);
needs_audio_device = false;
}
}
if (!request_.requested_video_device_id.empty()) {
const blink::MediaStreamDevice* video_device =
MediaCaptureDevicesDispatcher::GetInstance()
->GetRequestedVideoDevice(request_.requested_video_device_id);
if (video_device) {
devices.push_back(*video_device);
needs_video_device = false;
}
}
// If either or both audio and video devices were requested but not
// specified by id, get the default devices.
if (needs_audio_device || needs_video_device) {
MediaCaptureDevicesDispatcher::GetInstance()->GetDefaultDevices(
needs_audio_device, needs_video_device, &devices);
}
break;
}
case blink::MEDIA_DEVICE_ACCESS: {
// Get the default devices for the request.
MediaCaptureDevicesDispatcher::GetInstance()->GetDefaultDevices(
microphone_requested_, webcam_requested_, &devices);
break;
}
case blink::MEDIA_DEVICE_UPDATE: {
NOTREACHED();
break;
}
}
}
std::move(callback_).Run(devices, blink::mojom::MediaStreamRequestResult::OK,
std::unique_ptr<content::MediaStreamUI>());
}
void MediaStreamDevicesController::Deny(
blink::mojom::MediaStreamRequestResult result) {
std::move(callback_).Run(blink::MediaStreamDevices(), result,
std::unique_ptr<content::MediaStreamUI>());
}
void MediaStreamDevicesController::HandleUserMediaRequest() {
blink::MediaStreamDevices devices;
if (request_.audio_type ==
blink::mojom::MediaStreamType::GUM_TAB_AUDIO_CAPTURE) {
devices.emplace_back(blink::mojom::MediaStreamType::GUM_TAB_AUDIO_CAPTURE,
"", "");
}
if (request_.video_type ==
blink::mojom::MediaStreamType::GUM_TAB_VIDEO_CAPTURE) {
devices.emplace_back(blink::mojom::MediaStreamType::GUM_TAB_VIDEO_CAPTURE,
"", "");
}
if (request_.audio_type ==
blink::mojom::MediaStreamType::GUM_DESKTOP_AUDIO_CAPTURE) {
devices.emplace_back(
blink::mojom::MediaStreamType::GUM_DESKTOP_AUDIO_CAPTURE, "loopback",
"System Audio");
}
if (request_.video_type ==
blink::mojom::MediaStreamType::GUM_DESKTOP_VIDEO_CAPTURE) {
content::DesktopMediaID screen_id;
// If the device id wasn't specified then this is a screen capture request
// (i.e. chooseDesktopMedia() API wasn't used to generate device id).
if (request_.requested_video_device_id.empty()) {
screen_id = content::DesktopMediaID(content::DesktopMediaID::TYPE_SCREEN,
-1 /* kFullDesktopScreenId */);
} else {
screen_id =
content::DesktopMediaID::Parse(request_.requested_video_device_id);
}
devices.emplace_back(
blink::mojom::MediaStreamType::GUM_DESKTOP_VIDEO_CAPTURE,
screen_id.ToString(), "Screen");
}
std::move(callback_).Run(
devices,
devices.empty() ? blink::mojom::MediaStreamRequestResult::NO_HARDWARE
: blink::mojom::MediaStreamRequestResult::OK,
std::unique_ptr<content::MediaStreamUI>());
}
} // namespace electron