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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
// //
// plAudioCaps - Utility class to query and detect available audio options.//
// //
//////////////////////////////////////////////////////////////////////////////
#include "HeadSpin.h"
#include <al.h>
#include <alc.h>
#include "plEAXEffects.h"
#include "plAudioCaps.h"
#ifdef EAX_SDK_AVAILABLE
#include <eax.h>
#include <eaxlegacy.h>
#endif
#include <DShow.h>
#include "plStatusLog/plStatusLog.h"
#define MAX_NUM_SOURCES 128
#define kLogMe if( fLog != nil ) fLog->AddLineF(
#define MAX_AUDIOCARD_NAME 256
//////////////////////////////////////////////////////////////////////////////
//// Detector Functions //////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
plAudioCaps plAudioCapsDetector::fCaps;
hsBool plAudioCapsDetector::fGotCaps = false;
plStatusLog *plAudioCapsDetector::fLog = nil;
plAudioCapsDetector::plAudioCapsDetector()
{
}
plAudioCapsDetector::~plAudioCapsDetector()
{
}
//// Detect //////////////////////////////////////////////////////////////////
// Our big function that does all of our work
plAudioCaps &plAudioCapsDetector::Detect( hsBool logIt, hsBool init )
{
// If we already have the device capabilities, just return them
if(fGotCaps) return fCaps;
fCaps.fIsAvailable = true;
ALCdevice * device;
ALCcontext * context;
if(init)
{
device = alcOpenDevice(0);
if(!device)
{
fCaps.fIsAvailable = false;
}
context = alcCreateContext(device, 0);
if(alGetError() != AL_NO_ERROR)
{
fCaps.fIsAvailable = false;
}
alcMakeContextCurrent(context);
if(alGetError() != AL_NO_ERROR)
{
fCaps.fIsAvailable = false;
}
}
EnumerateAudioDevices();
if( logIt )
fLog = plStatusLogMgr::GetInstance().CreateStatusLog( 30, "audioCaps.log" );
else
fLog = nil;
kLogMe 0xff00ff00, "Starting audio caps detection..." );
// find the max number of sources
ALuint sources[MAX_NUM_SOURCES];
ALuint i = 0;
for(; i < MAX_NUM_SOURCES; i++)
{
alGenSources(1, &sources[i]);
if(alGetError() != AL_NO_ERROR)
break;
fCaps.fMaxNumSources++;
}
alDeleteSources(i, sources);
kLogMe 0xffffffff, "Max Number of sources: %d", i);
plStatusLog::AddLineS("audio.log", "Max Number of sources: %d", i);
// Detect EAX support
kLogMe 0xff00ff00, "Attempting to detect EAX support..." );
fCaps.fEAXAvailable = IDetectEAX( );
kLogMe 0xff00ff00, "Audio caps detection COMPLETE." );
delete fLog;
fGotCaps = true; // We've got the device capabilities
if(init)
{
alcMakeContextCurrent(nil);
alcDestroyContext(context);
alcCloseDevice(device);
}
return fCaps;
}
void plAudioCapsDetector::EnumerateAudioDevices()
{
ICreateDevEnum *pDevEnum;
IEnumMoniker *pEnumMon;
IMoniker *pMoniker;
ULONG cFetched;
HRESULT hr;
char audioCardName[MAX_AUDIOCARD_NAME];
short *pShort;
// Enumerate audio devices
hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (void **)&pDevEnum);
if(SUCCEEDED(hr))
{
hr = pDevEnum->CreateClassEnumerator(CLSID_AudioRendererCategory, &pEnumMon, 0);
if(SUCCEEDED(hr))
{
while(pEnumMon->Next(1, &pMoniker, &cFetched) == S_OK)
{
if(pMoniker)
{
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pPropBag);
if(SUCCEEDED(hr))
{
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
memset(audioCardName, 0, MAX_AUDIOCARD_NAME);
pShort = varName.piVal;
// copy from wide character array to char array
for(int i = 0; *pShort != 0 && i < MAX_AUDIOCARD_NAME; pShort++, i++)
{
audioCardName[i] = (char)*pShort;
}
if(SUCCEEDED(hr))
{
plStatusLog::AddLineS("audiocaps.log", audioCardName );
}
VariantClear(&varName);
pPropBag->Release();
}
pMoniker->Release();
}
}
pEnumMon->Release();
}
pDevEnum->Release();
}
}
//// IDetectEAX //////////////////////////////////////////////////////////////
// Attempt to actually init the EAX listener.Note that we can potentially do
// this even if we didn't load the EAX Unified driver (we could just be
// running EAX 3.0 native), so you can really just think of the EAX Unified
// init code above as a way of trying to make sure this line here will
// succeed as often as possible.
hsBool plAudioCapsDetector::IDetectEAX( )
{
#ifdef EAX_SDK_AVAILABLE
hsBool gotSupport = true;
if(!alIsExtensionPresent((ALchar *)"EAX4.0")) // is eax 4 supported
{
if(!alIsExtensionPresent((ALchar *) "EAX4.0Emulated")) // is an earlier version of eax supported
{
kLogMe 0xff00ff00, "EAX not supported");
gotSupport = false;
}
else
{
fCaps.fEAXUnified = true;
kLogMe 0xff00ff00, "EAX 4 Emulated supported");
}
}
else
{
kLogMe 0xff00ff00, "EAX 4 available");
}
return gotSupport;
#else
kLogMe 0xff00ff00, "EAX disabled in this build");
return false;
#endif
}