diff options
Diffstat (limited to 'media/audio/win/audio_manager_win.cc')
| -rw-r--r-- | media/audio/win/audio_manager_win.cc | 178 |
1 files changed, 91 insertions, 87 deletions
diff --git a/media/audio/win/audio_manager_win.cc b/media/audio/win/audio_manager_win.cc index 84dba63..4a36172 100644 --- a/media/audio/win/audio_manager_win.cc +++ b/media/audio/win/audio_manager_win.cc @@ -47,42 +47,46 @@ const int kWinMaxInputChannels = 2; // play. const int kNumInputBuffers = 3; +int GetVersionPartAsInt(DWORDLONG num) { + return static_cast<int>(num & 0xffff); +} + // Returns a string containing the given device's description and installed // driver version. string16 GetDeviceAndDriverInfo(HDEVINFO device_info, SP_DEVINFO_DATA* device_data) { - // Save the old install params setting and set a flag for the
- // SetupDiBuildDriverInfoList below to return only the installed drivers.
- SP_DEVINSTALL_PARAMS old_device_install_params;
- old_device_install_params.cbSize = sizeof(old_device_install_params);
- SetupDiGetDeviceInstallParams(device_info, device_data,
- &old_device_install_params);
- SP_DEVINSTALL_PARAMS device_install_params = old_device_install_params;
- device_install_params.FlagsEx |= DI_FLAGSEX_INSTALLEDDRIVER;
- SetupDiSetDeviceInstallParams(device_info, device_data,
- &device_install_params);
-
- SP_DRVINFO_DATA driver_data;
- driver_data.cbSize = sizeof(driver_data);
- string16 device_and_driver_info;
- if (SetupDiBuildDriverInfoList(device_info, device_data,
- SPDIT_COMPATDRIVER)) {
- if (SetupDiEnumDriverInfo(device_info, device_data, SPDIT_COMPATDRIVER, 0,
- &driver_data)) {
- DWORDLONG version = driver_data.DriverVersion;
- device_and_driver_info = string16(driver_data.Description) + L" v" +
- base::IntToString16((version >> 48) & 0xffff) + L"." +
- base::IntToString16((version >> 32) & 0xffff) + L"." +
- base::IntToString16((version >> 16) & 0xffff) + L"." +
- base::IntToString16(version & 0xffff);
- }
- SetupDiDestroyDriverInfoList(device_info, device_data, SPDIT_COMPATDRIVER);
- }
-
- SetupDiSetDeviceInstallParams(device_info, device_data,
- &old_device_install_params);
-
- return device_and_driver_info;
+ // Save the old install params setting and set a flag for the + // SetupDiBuildDriverInfoList below to return only the installed drivers. + SP_DEVINSTALL_PARAMS old_device_install_params; + old_device_install_params.cbSize = sizeof(old_device_install_params); + SetupDiGetDeviceInstallParams(device_info, device_data, + &old_device_install_params); + SP_DEVINSTALL_PARAMS device_install_params = old_device_install_params; + device_install_params.FlagsEx |= DI_FLAGSEX_INSTALLEDDRIVER; + SetupDiSetDeviceInstallParams(device_info, device_data, + &device_install_params); + + SP_DRVINFO_DATA driver_data; + driver_data.cbSize = sizeof(driver_data); + string16 device_and_driver_info; + if (SetupDiBuildDriverInfoList(device_info, device_data, + SPDIT_COMPATDRIVER)) { + if (SetupDiEnumDriverInfo(device_info, device_data, SPDIT_COMPATDRIVER, 0, + &driver_data)) { + DWORDLONG version = driver_data.DriverVersion; + device_and_driver_info = string16(driver_data.Description) + L" v" + + base::IntToString16(GetVersionPartAsInt((version >> 48))) + L"." + + base::IntToString16(GetVersionPartAsInt((version >> 32))) + L"." + + base::IntToString16(GetVersionPartAsInt((version >> 16))) + L"." + + base::IntToString16(GetVersionPartAsInt(version)); + } + SetupDiDestroyDriverInfoList(device_info, device_data, SPDIT_COMPATDRIVER); + } + + SetupDiSetDeviceInstallParams(device_info, device_data, + &old_device_install_params); + + return device_and_driver_info; } } // namespace @@ -151,61 +155,61 @@ AudioManagerWin::~AudioManagerWin() { string16 AudioManagerWin::GetAudioInputDeviceModel() { // Get the default audio capture device and its device interface name. - DWORD device_id = 0;
- waveInMessage(reinterpret_cast<HWAVEIN>(WAVE_MAPPER),
- DRVM_MAPPER_PREFERRED_GET,
- reinterpret_cast<DWORD_PTR>(&device_id), NULL);
- ULONG device_interface_name_size = 0;
- waveInMessage(reinterpret_cast<HWAVEIN>(device_id),
- DRV_QUERYDEVICEINTERFACESIZE,
- reinterpret_cast<DWORD_PTR>(&device_interface_name_size), 0);
- string16 device_interface_name;
- string16::value_type* name_ptr = WriteInto(&device_interface_name,
- device_interface_name_size / sizeof(string16::value_type));
- waveInMessage(reinterpret_cast<HWAVEIN>(device_id),
- DRV_QUERYDEVICEINTERFACE,
- reinterpret_cast<DWORD_PTR>(name_ptr),
- static_cast<DWORD_PTR>(device_interface_name_size));
-
- // Enumerate all audio devices and find the one matching the above device
- // interface name.
- HDEVINFO device_info = SetupDiGetClassDevs(
- &AM_KSCATEGORY_AUDIO, 0, 0, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);
- if (device_info == INVALID_HANDLE_VALUE)
- return string16();
-
- DWORD interface_index = 0;
- SP_DEVICE_INTERFACE_DATA interface_data;
- interface_data.cbSize = sizeof(interface_data);
- while (SetupDiEnumDeviceInterfaces(device_info, 0, &AM_KSCATEGORY_AUDIO,
- interface_index++, &interface_data)) {
- // Query the size of the struct, allocate it and then query the data.
- SP_DEVINFO_DATA device_data;
- device_data.cbSize = sizeof(device_data);
- DWORD interface_detail_size = 0;
- SetupDiGetDeviceInterfaceDetail(device_info, &interface_data, 0, 0,
- &interface_detail_size, &device_data);
- if (!interface_detail_size)
- continue;
-
- scoped_array<char> interface_detail_buffer(new char[interface_detail_size]);
- SP_DEVICE_INTERFACE_DETAIL_DATA* interface_detail =
- reinterpret_cast<SP_DEVICE_INTERFACE_DETAIL_DATA*>(
- interface_detail_buffer.get());
- interface_detail->cbSize = interface_detail_size;
- if (!SetupDiGetDeviceInterfaceDetail(device_info, &interface_data,
- interface_detail,
- interface_detail_size, NULL,
- &device_data))
- return string16();
-
- bool device_found = (device_interface_name == interface_detail->DevicePath);
-
- if (device_found)
- return GetDeviceAndDriverInfo(device_info, &device_data);
- }
-
- return string16();
+ DWORD device_id = 0; + waveInMessage(reinterpret_cast<HWAVEIN>(WAVE_MAPPER), + DRVM_MAPPER_PREFERRED_GET, + reinterpret_cast<DWORD_PTR>(&device_id), NULL); + ULONG device_interface_name_size = 0; + waveInMessage(reinterpret_cast<HWAVEIN>(device_id), + DRV_QUERYDEVICEINTERFACESIZE, + reinterpret_cast<DWORD_PTR>(&device_interface_name_size), 0); + string16 device_interface_name; + string16::value_type* name_ptr = WriteInto(&device_interface_name, + device_interface_name_size / sizeof(string16::value_type)); + waveInMessage(reinterpret_cast<HWAVEIN>(device_id), + DRV_QUERYDEVICEINTERFACE, + reinterpret_cast<DWORD_PTR>(name_ptr), + static_cast<DWORD_PTR>(device_interface_name_size)); + + // Enumerate all audio devices and find the one matching the above device + // interface name. + HDEVINFO device_info = SetupDiGetClassDevs( + &AM_KSCATEGORY_AUDIO, 0, 0, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT); + if (device_info == INVALID_HANDLE_VALUE) + return string16(); + + DWORD interface_index = 0; + SP_DEVICE_INTERFACE_DATA interface_data; + interface_data.cbSize = sizeof(interface_data); + while (SetupDiEnumDeviceInterfaces(device_info, 0, &AM_KSCATEGORY_AUDIO, + interface_index++, &interface_data)) { + // Query the size of the struct, allocate it and then query the data. + SP_DEVINFO_DATA device_data; + device_data.cbSize = sizeof(device_data); + DWORD interface_detail_size = 0; + SetupDiGetDeviceInterfaceDetail(device_info, &interface_data, 0, 0, + &interface_detail_size, &device_data); + if (!interface_detail_size) + continue; + + scoped_array<char> interface_detail_buffer(new char[interface_detail_size]); + SP_DEVICE_INTERFACE_DETAIL_DATA* interface_detail = + reinterpret_cast<SP_DEVICE_INTERFACE_DETAIL_DATA*>( + interface_detail_buffer.get()); + interface_detail->cbSize = interface_detail_size; + if (!SetupDiGetDeviceInterfaceDetail(device_info, &interface_data, + interface_detail, + interface_detail_size, NULL, + &device_data)) + return string16(); + + bool device_found = (device_interface_name == interface_detail->DevicePath); + + if (device_found) + return GetDeviceAndDriverInfo(device_info, &device_data); + } + + return string16(); } // static |