dolphin/Source/Core/AudioCommon/aldlist.cpp

371 lines
9.5 KiB
C++

// Copyright 2009 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
/*
* Copyright (c) 2006, Creative Labs Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of conditions and
* the following disclaimer.
* * 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.
* * Neither the name of Creative Labs Inc. nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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 <cstring>
#include "AudioCommon/aldlist.h"
#include "Common/CommonFuncs.h"
#include "Common/CommonTypes.h"
#ifdef _WIN32
#include "../../../Externals/OpenAL/include/al.h"
#include "../../../Externals/OpenAL/include/alc.h"
#elif defined(__APPLE__)
#include <al.h>
#include <alc.h>
#else
#include <AL/al.h>
#include <AL/alc.h>
#endif
/*
* Init call
*/
ALDeviceList::ALDeviceList()
{
ALDEVICEINFO ALDeviceInfo;
// DeviceInfo vector stores, for each enumerated device, it's device name, selection status, spec version #, and extension support
vDeviceInfo.clear();
vDeviceInfo.reserve(10);
defaultDeviceIndex = 0;
// grab function pointers for 1.0-API functions, and if successful proceed to enumerate all devices
//if (LoadOAL10Library(nullptr, &ALFunction) == TRUE) {
if (alcIsExtensionPresent(nullptr, "ALC_ENUMERATION_EXT"))
{
const char *devices = alcGetString(nullptr, ALC_DEVICE_SPECIFIER);
const char *defaultDeviceName = alcGetString(nullptr, ALC_DEFAULT_DEVICE_SPECIFIER);
// go through device list (each device terminated with a single nullptr, list terminated with double nullptr)
for (s32 index = 0; devices != nullptr && strlen(devices) > 0; index++, devices += strlen(devices) + 1)
{
if (strcmp(defaultDeviceName, devices) == 0)
{
defaultDeviceIndex = index;
}
ALCdevice *device = alcOpenDevice(devices);
if (device)
{
ALCcontext *context = alcCreateContext(device, nullptr);
if (context)
{
alcMakeContextCurrent(context);
// if new actual device name isn't already in the list, then add it...
const char *actualDeviceName = alcGetString(device, ALC_DEVICE_SPECIFIER);
bool bNewName = true;
for (s32 i = 0; i < GetNumDevices(); i++)
{
if (strcmp(GetDeviceName(i), actualDeviceName) == 0)
{
bNewName = false;
}
}
if ((bNewName) && (actualDeviceName != nullptr) && (strlen(actualDeviceName) > 0))
{
ALDeviceInfo.bSelected = true;
ALDeviceInfo.strDeviceName = actualDeviceName;
alcGetIntegerv(device, ALC_MAJOR_VERSION, sizeof(s32), &ALDeviceInfo.iMajorVersion);
alcGetIntegerv(device, ALC_MINOR_VERSION, sizeof(s32), &ALDeviceInfo.iMinorVersion);
ALDeviceInfo.pvstrExtensions = new std::vector<std::string>;
// Check for ALC Extensions
if (alcIsExtensionPresent(device, "ALC_EXT_CAPTURE") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("ALC_EXT_CAPTURE");
if (alcIsExtensionPresent(device, "ALC_EXT_EFX") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("ALC_EXT_EFX");
// Check for AL Extensions
if (alIsExtensionPresent("AL_EXT_OFFSET") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("AL_EXT_OFFSET");
if (alIsExtensionPresent("AL_EXT_LINEAR_DISTANCE") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("AL_EXT_LINEAR_DISTANCE");
if (alIsExtensionPresent("AL_EXT_EXPONENT_DISTANCE") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("AL_EXT_EXPONENT_DISTANCE");
if (alIsExtensionPresent("EAX2.0") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("EAX2.0");
if (alIsExtensionPresent("EAX3.0") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("EAX3.0");
if (alIsExtensionPresent("EAX4.0") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("EAX4.0");
if (alIsExtensionPresent("EAX5.0") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("EAX5.0");
if (alIsExtensionPresent("EAX-RAM") == AL_TRUE)
ALDeviceInfo.pvstrExtensions->push_back("EAX-RAM");
// Get Source Count
ALDeviceInfo.uiSourceCount = GetMaxNumSources();
vDeviceInfo.push_back(ALDeviceInfo);
}
alcMakeContextCurrent(nullptr);
alcDestroyContext(context);
}
alcCloseDevice(device);
}
}
}
//}
ResetFilters();
}
/*
* Exit call
*/
ALDeviceList::~ALDeviceList()
{
for (auto& di : vDeviceInfo)
{
if (di.pvstrExtensions)
{
di.pvstrExtensions->clear();
delete di.pvstrExtensions;
}
}
vDeviceInfo.clear();
}
/*
* Returns the number of devices in the complete device list
*/
s32 ALDeviceList::GetNumDevices()
{
return (s32)vDeviceInfo.size();
}
/*
* Returns the device name at an index in the complete device list
*/
char * ALDeviceList::GetDeviceName(s32 index)
{
if (index < GetNumDevices())
return (char *)vDeviceInfo[index].strDeviceName.c_str();
else
return nullptr;
}
/*
* Returns the major and minor version numbers for a device at a specified index in the complete list
*/
void ALDeviceList::GetDeviceVersion(s32 index, s32 *major, s32 *minor)
{
if (index < GetNumDevices())
{
if (major)
*major = vDeviceInfo[index].iMajorVersion;
if (minor)
*minor = vDeviceInfo[index].iMinorVersion;
}
}
/*
* Returns the maximum number of Sources that can be generate on the given device
*/
u32 ALDeviceList::GetMaxNumSources(s32 index)
{
if (index < GetNumDevices())
return vDeviceInfo[index].uiSourceCount;
else
return 0;
}
/*
* Checks if the extension is supported on the given device
*/
bool ALDeviceList::IsExtensionSupported(s32 index, char *szExtName)
{
bool bReturn = false;
if (index < GetNumDevices())
{
for (auto& ext : *vDeviceInfo[index].pvstrExtensions)
{
if (!strcasecmp(ext.c_str(), szExtName))
{
bReturn = true;
break;
}
}
}
return bReturn;
}
/*
* returns the index of the default device in the complete device list
*/
s32 ALDeviceList::GetDefaultDevice()
{
return defaultDeviceIndex;
}
/*
* Deselects devices which don't have the specified minimum version
*/
void ALDeviceList::FilterDevicesMinVer(s32 major, s32 minor)
{
s32 dMajor = 0, dMinor = 0;
for (u32 i = 0; i < vDeviceInfo.size(); i++)
{
GetDeviceVersion(i, &dMajor, &dMinor);
if ((dMajor < major) || ((dMajor == major) && (dMinor < minor)))
{
vDeviceInfo[i].bSelected = false;
}
}
}
/*
* Deselects devices which don't have the specified maximum version
*/
void ALDeviceList::FilterDevicesMaxVer(s32 major, s32 minor)
{
s32 dMajor = 0, dMinor = 0;
for (u32 i = 0; i < vDeviceInfo.size(); i++)
{
GetDeviceVersion(i, &dMajor, &dMinor);
if ((dMajor > major) || ((dMajor == major) && (dMinor > minor)))
{
vDeviceInfo[i].bSelected = false;
}
}
}
/*
* Deselects device which don't support the given extension name
*/
void ALDeviceList::FilterDevicesExtension(char *szExtName)
{
bool bFound;
for (auto& di : vDeviceInfo)
{
bFound = false;
for (auto& ext : *di.pvstrExtensions)
{
if (!strcasecmp(ext.c_str(), szExtName))
{
bFound = true;
break;
}
}
if (!bFound)
di.bSelected = false;
}
}
/*
* Resets all filtering, such that all devices are in the list
*/
void ALDeviceList::ResetFilters()
{
for (s32 i = 0; i < GetNumDevices(); i++)
{
vDeviceInfo[i].bSelected = true;
}
filterIndex = 0;
}
/*
* Gets index of first filtered device
*/
s32 ALDeviceList::GetFirstFilteredDevice()
{
s32 i;
for (i = 0; i < GetNumDevices(); i++)
{
if (vDeviceInfo[i].bSelected == true)
{
break;
}
}
filterIndex = i + 1;
return i;
}
/*
* Gets index of next filtered device
*/
s32 ALDeviceList::GetNextFilteredDevice()
{
s32 i;
for (i = filterIndex; i < GetNumDevices(); i++)
{
if (vDeviceInfo[i].bSelected == true)
{
break;
}
}
filterIndex = i + 1;
return i;
}
/*
* Internal function to determine max number of Sources that can be generated
*/
u32 ALDeviceList::GetMaxNumSources()
{
ALuint uiSources[256];
u32 iSourceCount = 0;
// Clear AL Error Code
alGetError();
// Generate up to 256 Sources, checking for any errors
for (iSourceCount = 0; iSourceCount < 256; iSourceCount++)
{
alGenSources(1, &uiSources[iSourceCount]);
if (alGetError() != AL_NO_ERROR)
break;
}
// Release the Sources
alDeleteSources(iSourceCount, uiSources);
if (alGetError() != AL_NO_ERROR)
{
for (auto& uiSource : uiSources)
{
alDeleteSources(1, &uiSource);
}
}
return iSourceCount;
}