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qtmultimedia/src/multimedia/audio/qaudiodeviceinfo_win32_p.cpp
Yoann Lopes f424e8249b Use correct default audio output and input devices on Windows. 
It was returning the first available device as the default, which might
not be the actual default device. Use the WAVE_MAPPER device ID instead
that tells Windows to use the most appropriate device.

Change-Id: Id1e9324e889bbaaab54bc0e0da810a7ce5fcb592
Reviewed-by: Andy Nichols <andy.nichols@digia.com>
2013-06-25 14:05:15 +02:00

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// INTERNAL USE ONLY: Do NOT use for any other purpose.
//
#include <QtCore/qt_windows.h>
#include <mmsystem.h>
#include "qaudiodeviceinfo_win32_p.h"
#if defined(Q_CC_MINGW) && !defined(__MINGW64_VERSION_MAJOR)
struct IBaseFilter; // Needed for strmif.h from stock MinGW.
struct _DDPIXELFORMAT;
typedef struct _DDPIXELFORMAT* LPDDPIXELFORMAT;
#endif
#include <strmif.h>
#if !defined(Q_CC_MINGW) || defined(__MINGW64_VERSION_MAJOR)
# include <uuids.h>
#else
extern GUID CLSID_AudioInputDeviceCategory;
extern GUID CLSID_AudioRendererCategory;
extern GUID IID_ICreateDevEnum;
extern GUID CLSID_SystemDeviceEnum;
#ifndef __ICreateDevEnum_INTERFACE_DEFINED__
#define __ICreateDevEnum_INTERFACE_DEFINED__
DECLARE_INTERFACE_(ICreateDevEnum, IUnknown)
{
STDMETHOD(CreateClassEnumerator)(REFCLSID clsidDeviceClass,
IEnumMoniker **ppEnumMoniker,
DWORD dwFlags) PURE;
};
#endif // __ICreateDevEnum_INTERFACE_DEFINED__
#ifndef __IErrorLog_INTERFACE_DEFINED__
#define __IErrorLog_INTERFACE_DEFINED__
DECLARE_INTERFACE_(IErrorLog, IUnknown)
{
STDMETHOD(AddError)(THIS_ LPCOLESTR, EXCEPINFO *) PURE;
};
#endif /* __IErrorLog_INTERFACE_DEFINED__ */
#ifndef __IPropertyBag_INTERFACE_DEFINED__
#define __IPropertyBag_INTERFACE_DEFINED__
const GUID IID_IPropertyBag = {0x55272A00, 0x42CB, 0x11CE, {0x81, 0x35, 0x00, 0xAA, 0x00, 0x4B, 0xB8, 0x51}};
DECLARE_INTERFACE_(IPropertyBag, IUnknown)
{
STDMETHOD(Read)(THIS_ LPCOLESTR, VARIANT *, IErrorLog *) PURE;
STDMETHOD(Write)(THIS_ LPCOLESTR, VARIANT *) PURE;
};
#endif /* __IPropertyBag_INTERFACE_DEFINED__ */
#endif // defined(Q_CC_MINGW) && !defined(__MINGW64_VERSION_MAJOR)
QT_BEGIN_NAMESPACE
// For mingw toolchain mmsystem.h only defines half the defines, so add if needed.
#ifndef WAVE_FORMAT_44M08
#define WAVE_FORMAT_44M08 0x00000100
#define WAVE_FORMAT_44S08 0x00000200
#define WAVE_FORMAT_44M16 0x00000400
#define WAVE_FORMAT_44S16 0x00000800
#define WAVE_FORMAT_48M08 0x00001000
#define WAVE_FORMAT_48S08 0x00002000
#define WAVE_FORMAT_48M16 0x00004000
#define WAVE_FORMAT_48S16 0x00008000
#define WAVE_FORMAT_96M08 0x00010000
#define WAVE_FORMAT_96S08 0x00020000
#define WAVE_FORMAT_96M16 0x00040000
#define WAVE_FORMAT_96S16 0x00080000
#endif
QAudioDeviceInfoInternal::QAudioDeviceInfoInternal(QByteArray dev, QAudio::Mode mode)
{
QDataStream ds(&dev, QIODevice::ReadOnly);
ds >> devId >> device;
this->mode = mode;
updateLists();
}
QAudioDeviceInfoInternal::~QAudioDeviceInfoInternal()
{
close();
}
bool QAudioDeviceInfoInternal::isFormatSupported(const QAudioFormat& format) const
{
return testSettings(format);
}
QAudioFormat QAudioDeviceInfoInternal::preferredFormat() const
{
QAudioFormat nearest;
if (mode == QAudio::AudioOutput) {
nearest.setSampleRate(44100);
nearest.setChannelCount(2);
nearest.setByteOrder(QAudioFormat::LittleEndian);
nearest.setSampleType(QAudioFormat::SignedInt);
nearest.setSampleSize(16);
nearest.setCodec(QLatin1String("audio/pcm"));
} else {
nearest.setSampleRate(11025);
nearest.setChannelCount(1);
nearest.setByteOrder(QAudioFormat::LittleEndian);
nearest.setSampleType(QAudioFormat::SignedInt);
nearest.setSampleSize(8);
nearest.setCodec(QLatin1String("audio/pcm"));
}
return nearest;
}
QString QAudioDeviceInfoInternal::deviceName() const
{
return device;
}
QStringList QAudioDeviceInfoInternal::supportedCodecs()
{
updateLists();
return codecz;
}
QList<int> QAudioDeviceInfoInternal::supportedSampleRates()
{
updateLists();
return sampleRatez;
}
QList<int> QAudioDeviceInfoInternal::supportedChannelCounts()
{
updateLists();
return channelz;
}
QList<int> QAudioDeviceInfoInternal::supportedSampleSizes()
{
updateLists();
return sizez;
}
QList<QAudioFormat::Endian> QAudioDeviceInfoInternal::supportedByteOrders()
{
updateLists();
return byteOrderz;
}
QList<QAudioFormat::SampleType> QAudioDeviceInfoInternal::supportedSampleTypes()
{
updateLists();
return typez;
}
bool QAudioDeviceInfoInternal::open()
{
return true;
}
void QAudioDeviceInfoInternal::close()
{
}
bool QAudioDeviceInfoInternal::testSettings(const QAudioFormat& format) const
{
// Set nearest to closest settings that do work.
// See if what is in settings will work (return value).
bool failed = false;
bool match = false;
// check codec
for( int i = 0; i < codecz.count(); i++) {
if (format.codec() == codecz.at(i))
match = true;
}
if (!match) failed = true;
// check channel
match = false;
if (!failed) {
for (int i = 0; i < channelz.count(); i++) {
if (format.channelCount() == channelz.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check sampleRate
match = false;
if (!failed) {
for (int i = 0; i < sampleRatez.count(); i++) {
if (format.sampleRate() == sampleRatez.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check sample size
match = false;
if (!failed) {
for( int i = 0; i < sizez.count(); i++) {
if (format.sampleSize() == sizez.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check byte order
match = false;
if (!failed) {
for( int i = 0; i < byteOrderz.count(); i++) {
if (format.byteOrder() == byteOrderz.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
// check sample type
match = false;
if (!failed) {
for( int i = 0; i < typez.count(); i++) {
if (format.sampleType() == typez.at(i)) {
match = true;
break;
}
}
if (!match)
failed = true;
}
if(!failed) {
// settings work
return true;
}
return false;
}
void QAudioDeviceInfoInternal::updateLists()
{
// redo all lists based on current settings
bool match = false;
DWORD fmt = 0;
if(mode == QAudio::AudioOutput) {
WAVEOUTCAPS woc;
if (waveOutGetDevCaps(devId, &woc, sizeof(WAVEOUTCAPS)) == MMSYSERR_NOERROR) {
match = true;
fmt = woc.dwFormats;
}
} else {
WAVEINCAPS woc;
if (waveInGetDevCaps(devId, &woc, sizeof(WAVEINCAPS)) == MMSYSERR_NOERROR) {
match = true;
fmt = woc.dwFormats;
}
}
sizez.clear();
sampleRatez.clear();
channelz.clear();
byteOrderz.clear();
typez.clear();
codecz.clear();
if(match) {
if ((fmt & WAVE_FORMAT_1M08)
|| (fmt & WAVE_FORMAT_1S08)
|| (fmt & WAVE_FORMAT_2M08)
|| (fmt & WAVE_FORMAT_2S08)
|| (fmt & WAVE_FORMAT_4M08)
|| (fmt & WAVE_FORMAT_4S08)
|| (fmt & WAVE_FORMAT_48M08)
|| (fmt & WAVE_FORMAT_48S08)
|| (fmt & WAVE_FORMAT_96M08)
|| (fmt & WAVE_FORMAT_96S08)
) {
sizez.append(8);
}
if ((fmt & WAVE_FORMAT_1M16)
|| (fmt & WAVE_FORMAT_1S16)
|| (fmt & WAVE_FORMAT_2M16)
|| (fmt & WAVE_FORMAT_2S16)
|| (fmt & WAVE_FORMAT_4M16)
|| (fmt & WAVE_FORMAT_4S16)
|| (fmt & WAVE_FORMAT_48M16)
|| (fmt & WAVE_FORMAT_48S16)
|| (fmt & WAVE_FORMAT_96M16)
|| (fmt & WAVE_FORMAT_96S16)
) {
sizez.append(16);
}
if ((fmt & WAVE_FORMAT_1M08)
|| (fmt & WAVE_FORMAT_1S08)
|| (fmt & WAVE_FORMAT_1M16)
|| (fmt & WAVE_FORMAT_1S16)) {
sampleRatez.append(11025);
}
if ((fmt & WAVE_FORMAT_2M08)
|| (fmt & WAVE_FORMAT_2S08)
|| (fmt & WAVE_FORMAT_2M16)
|| (fmt & WAVE_FORMAT_2S16)) {
sampleRatez.append(22050);
}
if ((fmt & WAVE_FORMAT_4M08)
|| (fmt & WAVE_FORMAT_4S08)
|| (fmt & WAVE_FORMAT_4M16)
|| (fmt & WAVE_FORMAT_4S16)) {
sampleRatez.append(44100);
}
if ((fmt & WAVE_FORMAT_48M08)
|| (fmt & WAVE_FORMAT_48S08)
|| (fmt & WAVE_FORMAT_48M16)
|| (fmt & WAVE_FORMAT_48S16)) {
sampleRatez.append(48000);
}
if ((fmt & WAVE_FORMAT_96M08)
|| (fmt & WAVE_FORMAT_96S08)
|| (fmt & WAVE_FORMAT_96M16)
|| (fmt & WAVE_FORMAT_96S16)) {
sampleRatez.append(96000);
}
channelz.append(1);
channelz.append(2);
if (mode == QAudio::AudioOutput) {
channelz.append(4);
channelz.append(6);
channelz.append(8);
}
byteOrderz.append(QAudioFormat::LittleEndian);
typez.append(QAudioFormat::SignedInt);
typez.append(QAudioFormat::UnSignedInt);
codecz.append(QLatin1String("audio/pcm"));
}
if (sampleRatez.count() > 0)
sampleRatez.prepend(8000);
}
QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode mode)
{
Q_UNUSED(mode)
QList<QByteArray> devices;
//enumerate device fullnames through directshow api
CoInitialize(NULL);
ICreateDevEnum *pDevEnum = NULL;
IEnumMoniker *pEnum = NULL;
// Create the System device enumerator
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL,
CLSCTX_INPROC_SERVER, IID_ICreateDevEnum,
reinterpret_cast<void **>(&pDevEnum));
unsigned long iNumDevs = mode == QAudio::AudioOutput ? waveOutGetNumDevs() : waveInGetNumDevs();
if (SUCCEEDED(hr)) {
// Create the enumerator for the audio input/output category
if (pDevEnum->CreateClassEnumerator(
mode == QAudio::AudioOutput ? CLSID_AudioRendererCategory : CLSID_AudioInputDeviceCategory,
&pEnum, 0) == S_OK) {
pEnum->Reset();
// go through and find all audio devices
IMoniker *pMoniker = NULL;
while (pEnum->Next(1, &pMoniker, NULL) == S_OK) {
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0,0,IID_IPropertyBag,
reinterpret_cast<void **>(&pPropBag));
if (FAILED(hr)) {
pMoniker->Release();
continue; // skip this one
}
// Find if it is a wave device
VARIANT var;
VariantInit(&var);
hr = pPropBag->Read(mode == QAudio::AudioOutput ? L"WaveOutID" : L"WaveInID", &var, 0);
if (SUCCEEDED(hr)) {
LONG waveID = var.lVal;
if (waveID >= 0 && waveID < LONG(iNumDevs)) {
VariantClear(&var);
// Find the description
hr = pPropBag->Read(L"FriendlyName", &var, 0);
if (SUCCEEDED(hr)) {
QByteArray device;
QDataStream ds(&device, QIODevice::WriteOnly);
ds << quint32(waveID) << QString::fromWCharArray(var.bstrVal);
devices.append(device);
}
}
}
pPropBag->Release();
pMoniker->Release();
}
}
}
CoUninitialize();
return devices;
}
QByteArray QAudioDeviceInfoInternal::defaultOutputDevice()
{
QByteArray defaultDevice;
QDataStream ds(&defaultDevice, QIODevice::WriteOnly);
ds << quint32(WAVE_MAPPER) // device ID for default device
<< QStringLiteral("Default Output Device");
return defaultDevice;
}
QByteArray QAudioDeviceInfoInternal::defaultInputDevice()
{
QByteArray defaultDevice;
QDataStream ds(&defaultDevice, QIODevice::WriteOnly);
ds << quint32(WAVE_MAPPER) // device ID for default device
<< QStringLiteral("Default Input Device");
return defaultDevice;
}
QT_END_NAMESPACE
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