/*
alcOpenDevice
Open the Device specified.
*/
ALCAPI ALCdevice* ALCAPIENTRY alcOpenDevice(const ALCchar *deviceName)
{
ALboolean bDeviceFound = AL_FALSE;
ALCdevice *device;
ALint i;
InitAL();
if(deviceName && !deviceName[0])
deviceName = NULL;
device = malloc(sizeof(ALCdevice));
if (device)
{
const char *fmt;
//Initialise device structure
memset(device, 0, sizeof(ALCdevice));
//Validate device
device->IsCaptureDevice = AL_FALSE;
//Set output format
device->Frequency = GetConfigValueInt(NULL, "frequency", SWMIXER_OUTPUT_RATE);
if((ALint)device->Frequency <= 0)
device->Frequency = SWMIXER_OUTPUT_RATE;
fmt = GetConfigValue(NULL, "format", "AL_FORMAT_STEREO16");
if(fmt[0])
device->Format = alGetEnumValue(fmt);
if(!aluChannelsFromFormat(device->Format))
device->Format = AL_FORMAT_STEREO16;
device->UpdateSize = GetConfigValueInt(NULL, "refresh", 4096);
if((ALint)device->UpdateSize <= 0)
device->UpdateSize = 4096;
device->MaxNoOfSources = GetConfigValueInt(NULL, "sources", 256);
if((ALint)device->MaxNoOfSources <= 0)
device->MaxNoOfSources = 256;
// Find a playback device to open
for(i = 0;BackendList[i].Init;i++)
{
device->Funcs = &BackendList[i].Funcs;
if(ALCdevice_OpenPlayback(device, deviceName))
{
SuspendContext(NULL);
device->next = g_pDeviceList;
g_pDeviceList = device;
g_ulDeviceCount++;
ProcessContext(NULL);
bDeviceFound = AL_TRUE;
break;
}
}
if (!bDeviceFound)
{
// No suitable output device found
SetALCError(ALC_INVALID_VALUE);
free(device);
device = NULL;
}
}
else
SetALCError(ALC_OUT_OF_MEMORY);
return device;
}
/*
alcOpenDevice
Open the Device specified.
*/
ALCAPI ALCdevice* ALCAPIENTRY alcOpenDevice(const ALCchar *deviceName)
{
ALboolean bDeviceFound = AL_FALSE;
ALCdevice *device;
ALint i;
if(deviceName && !deviceName[0])
deviceName = NULL;
device = malloc(sizeof(ALCdevice));
if (device)
{
const char *fmt;
//Initialise device structure
memset(device, 0, sizeof(ALCdevice));
//Validate device
device->Connected = ALC_TRUE;
device->IsCaptureDevice = AL_FALSE;
device->Bs2b = NULL;
device->szDeviceName = NULL;
device->Contexts = NULL;
device->NumContexts = 0;
//Set output format
device->Frequency = GetConfigValueInt(NULL, "frequency", SWMIXER_OUTPUT_RATE);
if(device->Frequency == 0)
device->Frequency = SWMIXER_OUTPUT_RATE;
fmt = GetConfigValue(NULL, "format", "AL_FORMAT_STEREO16");
device->Format = GetFormatFromString(fmt);
device->NumUpdates = GetConfigValueInt(NULL, "periods", 4);
if(device->NumUpdates < 2)
device->NumUpdates = 4;
i = GetConfigValueInt(NULL, "refresh", 4096);
if(i <= 0) i = 4096;
device->UpdateSize = GetConfigValueInt(NULL, "period_size", i/device->NumUpdates);
if(device->UpdateSize <= 0)
device->UpdateSize = i/device->NumUpdates;
device->MaxNoOfSources = GetConfigValueInt(NULL, "sources", 256);
if((ALint)device->MaxNoOfSources <= 0)
device->MaxNoOfSources = 256;
device->AuxiliaryEffectSlotMax = GetConfigValueInt(NULL, "slots", 4);
if((ALint)device->AuxiliaryEffectSlotMax <= 0)
device->AuxiliaryEffectSlotMax = 4;
device->lNumStereoSources = 1;
device->lNumMonoSources = device->MaxNoOfSources - device->lNumStereoSources;
device->NumAuxSends = GetConfigValueInt(NULL, "sends", MAX_SENDS);
if(device->NumAuxSends > MAX_SENDS)
device->NumAuxSends = MAX_SENDS;
device->Bs2bLevel = GetConfigValueInt(NULL, "cf_level", 0);
// Find a playback device to open
SuspendContext(NULL);
for(i = 0;BackendList[i].Init;i++)
{
device->Funcs = &BackendList[i].Funcs;
if(ALCdevice_OpenPlayback(device, deviceName))
{
device->next = g_pDeviceList;
g_pDeviceList = device;
g_ulDeviceCount++;
bDeviceFound = AL_TRUE;
break;
}
}
ProcessContext(NULL);
if (!bDeviceFound)
{
// No suitable output device found
alcSetError(ALC_INVALID_VALUE);
free(device);
device = NULL;
}
}
else
alcSetError(ALC_OUT_OF_MEMORY);
return device;
}