blob: f8a928e1f0bdb6532c2fd4951afd2a30e65a0a51 [file] [log] [blame]
/*
* libjingle
* Copyright 2004 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/session/phone/win32devicemanager.h"
#include <atlbase.h>
#include <dbt.h>
#include <strmif.h> // must come before ks.h
#include <ks.h>
#include <ksmedia.h>
#define INITGUID // For PKEY_AudioEndpoint_GUID
#include <mmdeviceapi.h>
#include <mmsystem.h>
#include <functiondiscoverykeys_devpkey.h>
#include <uuids.h>
#include "talk/base/win32.h" // ToUtf8
#include "talk/base/win32window.h"
#include "talk/base/logging.h"
#include "talk/base/stringutils.h"
#include "talk/base/thread.h"
#include "talk/session/phone/mediacommon.h"
#ifdef HAVE_LOGITECH_HEADERS
#include "third_party/logitech/files/logitechquickcam.h"
#endif
namespace cricket {
DeviceManagerInterface* DeviceManagerFactory::Create() {
return new Win32DeviceManager();
}
class Win32DeviceWatcher
: public DeviceWatcher,
public talk_base::Win32Window {
public:
explicit Win32DeviceWatcher(Win32DeviceManager* dm);
virtual ~Win32DeviceWatcher();
virtual bool Start();
virtual void Stop();
private:
HDEVNOTIFY Register(REFGUID guid);
void Unregister(HDEVNOTIFY notify);
virtual bool OnMessage(UINT msg, WPARAM wp, LPARAM lp, LRESULT& result);
Win32DeviceManager* manager_;
HDEVNOTIFY audio_notify_;
HDEVNOTIFY video_notify_;
};
static const char* kFilteredAudioDevicesName[] = {
NULL,
};
static const char* const kFilteredVideoDevicesName[] = {
"Google Camera Adapter", // Our own magiccams
"Asus virtual Camera", // Bad Asus desktop virtual cam
"Bluetooth Video", // Bad Sony viao bluetooth sharing driver
NULL,
};
static const wchar_t kFriendlyName[] = L"FriendlyName";
static const wchar_t kDevicePath[] = L"DevicePath";
static const char kUsbDevicePathPrefix[] = "\\\\?\\usb";
static bool GetDevices(const CLSID& catid, std::vector<Device>* out);
static bool GetCoreAudioDevices(bool input, std::vector<Device>* devs);
static bool GetWaveDevices(bool input, std::vector<Device>* devs);
Win32DeviceManager::Win32DeviceManager()
: need_couninitialize_(false) {
set_watcher(new Win32DeviceWatcher(this));
}
Win32DeviceManager::~Win32DeviceManager() {
if (initialized()) {
Terminate();
}
}
bool Win32DeviceManager::Init() {
if (!initialized()) {
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
need_couninitialize_ = SUCCEEDED(hr);
if (FAILED(hr)) {
LOG(LS_ERROR) << "CoInitialize failed, hr=" << hr;
if (hr != RPC_E_CHANGED_MODE) {
return false;
}
}
if (!watcher()->Start()) {
return false;
}
set_initialized(true);
}
return true;
}
void Win32DeviceManager::Terminate() {
if (initialized()) {
watcher()->Stop();
if (need_couninitialize_) {
CoUninitialize();
need_couninitialize_ = false;
}
set_initialized(false);
}
}
bool Win32DeviceManager::GetDefaultVideoCaptureDevice(Device* device) {
bool ret = false;
// If there are multiple capture devices, we want the first USB one.
// This avoids issues with defaulting to virtual cameras or grabber cards.
std::vector<Device> devices;
ret = (GetVideoCaptureDevices(&devices) && !devices.empty());
if (ret) {
*device = devices[0];
for (size_t i = 0; i < devices.size(); ++i) {
if (strnicmp(devices[i].id.c_str(), kUsbDevicePathPrefix,
ARRAY_SIZE(kUsbDevicePathPrefix) - 1) == 0) {
*device = devices[i];
break;
}
}
}
return ret;
}
bool Win32DeviceManager::GetAudioDevices(bool input,
std::vector<Device>* devs) {
devs->clear();
if (talk_base::IsWindowsVistaOrLater()) {
if (!GetCoreAudioDevices(input, devs))
return false;
} else {
if (!GetWaveDevices(input, devs))
return false;
}
return FilterDevices(devs, kFilteredAudioDevicesName);
}
bool Win32DeviceManager::GetVideoCaptureDevices(std::vector<Device>* devices) {
devices->clear();
if (!GetDevices(CLSID_VideoInputDeviceCategory, devices)) {
return false;
}
return FilterDevices(devices, kFilteredVideoDevicesName);
}
bool GetDevices(const CLSID& catid, std::vector<Device>* devices) {
HRESULT hr;
// CComPtr is a scoped pointer that will be auto released when going
// out of scope. CoUninitialize must not be called before the
// release.
CComPtr<ICreateDevEnum> sys_dev_enum;
CComPtr<IEnumMoniker> cam_enum;
if (FAILED(hr = sys_dev_enum.CoCreateInstance(CLSID_SystemDeviceEnum)) ||
FAILED(hr = sys_dev_enum->CreateClassEnumerator(catid, &cam_enum, 0))) {
LOG(LS_ERROR) << "Failed to create device enumerator, hr=" << hr;
return false;
}
// Only enum devices if CreateClassEnumerator returns S_OK. If there are no
// devices available, S_FALSE will be returned, but enumMk will be NULL.
if (hr == S_OK) {
CComPtr<IMoniker> mk;
while (cam_enum->Next(1, &mk, NULL) == S_OK) {
#ifdef HAVE_LOGITECH_HEADERS
// Initialize Logitech device if applicable
MaybeLogitechDeviceReset(mk);
#endif
CComPtr<IPropertyBag> bag;
if (SUCCEEDED(mk->BindToStorage(NULL, NULL,
__uuidof(bag), reinterpret_cast<void**>(&bag)))) {
CComVariant name, path;
std::string name_str, path_str;
if (SUCCEEDED(bag->Read(kFriendlyName, &name, 0)) &&
name.vt == VT_BSTR) {
name_str = talk_base::ToUtf8(name.bstrVal);
// Get the device id if one exists.
if (SUCCEEDED(bag->Read(kDevicePath, &path, 0)) &&
path.vt == VT_BSTR) {
path_str = talk_base::ToUtf8(path.bstrVal);
}
devices->push_back(Device(name_str, path_str));
}
}
mk = NULL;
}
}
return true;
}
HRESULT GetStringProp(IPropertyStore* bag, PROPERTYKEY key, std::string* out) {
out->clear();
PROPVARIANT var;
PropVariantInit(&var);
HRESULT hr = bag->GetValue(key, &var);
if (SUCCEEDED(hr)) {
if (var.pwszVal)
*out = talk_base::ToUtf8(var.pwszVal);
else
hr = E_FAIL;
}
PropVariantClear(&var);
return hr;
}
// Adapted from http://msdn.microsoft.com/en-us/library/dd370812(v=VS.85).aspx
HRESULT CricketDeviceFromImmDevice(IMMDevice* device, Device* out) {
CComPtr<IPropertyStore> props;
HRESULT hr = device->OpenPropertyStore(STGM_READ, &props);
if (FAILED(hr)) {
return hr;
}
// Get the endpoint's name and id.
std::string name, guid;
hr = GetStringProp(props, PKEY_Device_FriendlyName, &name);
if (SUCCEEDED(hr)) {
hr = GetStringProp(props, PKEY_AudioEndpoint_GUID, &guid);
if (SUCCEEDED(hr)) {
out->name = name;
out->id = guid;
}
}
return hr;
}
bool GetCoreAudioDevices(
bool input, std::vector<Device>* devs) {
HRESULT hr = S_OK;
CComPtr<IMMDeviceEnumerator> enumerator;
hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL,
__uuidof(IMMDeviceEnumerator), reinterpret_cast<void**>(&enumerator));
if (SUCCEEDED(hr)) {
CComPtr<IMMDeviceCollection> devices;
hr = enumerator->EnumAudioEndpoints((input ? eCapture : eRender),
DEVICE_STATE_ACTIVE, &devices);
if (SUCCEEDED(hr)) {
unsigned int count;
hr = devices->GetCount(&count);
if (SUCCEEDED(hr)) {
for (unsigned int i = 0; i < count; i++) {
CComPtr<IMMDevice> device;
// Get pointer to endpoint number i.
hr = devices->Item(i, &device);
if (FAILED(hr)) {
break;
}
Device dev;
hr = CricketDeviceFromImmDevice(device, &dev);
if (SUCCEEDED(hr)) {
devs->push_back(dev);
} else {
LOG(LS_WARNING) << "Unable to query IMM Device, skipping. HR="
<< hr;
hr = S_FALSE;
}
}
}
}
}
if (FAILED(hr)) {
LOG(LS_WARNING) << "GetCoreAudioDevices failed with hr " << hr;
return false;
}
return true;
}
bool GetWaveDevices(bool input, std::vector<Device>* devs) {
// Note, we don't use the System Device Enumerator interface here since it
// adds lots of pseudo-devices to the list, such as DirectSound and Wave
// variants of the same device.
if (input) {
int num_devs = waveInGetNumDevs();
for (int i = 0; i < num_devs; ++i) {
WAVEINCAPS caps;
if (waveInGetDevCaps(i, &caps, sizeof(caps)) == MMSYSERR_NOERROR &&
caps.wChannels > 0) {
devs->push_back(Device(talk_base::ToUtf8(caps.szPname),
talk_base::ToString(i)));
}
}
} else {
int num_devs = waveOutGetNumDevs();
for (int i = 0; i < num_devs; ++i) {
WAVEOUTCAPS caps;
if (waveOutGetDevCaps(i, &caps, sizeof(caps)) == MMSYSERR_NOERROR &&
caps.wChannels > 0) {
devs->push_back(Device(talk_base::ToUtf8(caps.szPname), i));
}
}
}
return true;
}
Win32DeviceWatcher::Win32DeviceWatcher(Win32DeviceManager* manager)
: DeviceWatcher(manager),
manager_(manager),
audio_notify_(NULL),
video_notify_(NULL) {
}
Win32DeviceWatcher::~Win32DeviceWatcher() {
}
bool Win32DeviceWatcher::Start() {
if (!Create(NULL, _T("libjingle Win32DeviceWatcher Window"),
0, 0, 0, 0, 0, 0)) {
return false;
}
audio_notify_ = Register(KSCATEGORY_AUDIO);
if (!audio_notify_) {
Stop();
return false;
}
video_notify_ = Register(KSCATEGORY_VIDEO);
if (!video_notify_) {
Stop();
return false;
}
return true;
}
void Win32DeviceWatcher::Stop() {
UnregisterDeviceNotification(video_notify_);
video_notify_ = NULL;
UnregisterDeviceNotification(audio_notify_);
audio_notify_ = NULL;
Destroy();
}
HDEVNOTIFY Win32DeviceWatcher::Register(REFGUID guid) {
DEV_BROADCAST_DEVICEINTERFACE dbdi;
dbdi.dbcc_size = sizeof(dbdi);
dbdi.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
dbdi.dbcc_classguid = guid;
dbdi.dbcc_name[0] = '\0';
return RegisterDeviceNotification(handle(), &dbdi,
DEVICE_NOTIFY_WINDOW_HANDLE);
}
void Win32DeviceWatcher::Unregister(HDEVNOTIFY handle) {
UnregisterDeviceNotification(handle);
}
bool Win32DeviceWatcher::OnMessage(UINT uMsg, WPARAM wParam, LPARAM lParam,
LRESULT& result) {
if (uMsg == WM_DEVICECHANGE) {
if (wParam == DBT_DEVICEARRIVAL ||
wParam == DBT_DEVICEREMOVECOMPLETE) {
DEV_BROADCAST_DEVICEINTERFACE* dbdi =
reinterpret_cast<DEV_BROADCAST_DEVICEINTERFACE*>(lParam);
if (dbdi->dbcc_classguid == KSCATEGORY_AUDIO ||
dbdi->dbcc_classguid == KSCATEGORY_VIDEO) {
manager_->SignalDevicesChange();
}
}
result = 0;
return true;
}
return false;
}
}; // namespace cricket