/*
GetContextSuspended
Returns the currently active Context, in a locked state
*/
ALCcontext *GetContextSuspended(void)
{
ALCcontext *pContext = NULL;
SuspendContext(NULL);
pContext = tls_get(LocalContext);
if(pContext && !IsContext(pContext))
{
tls_set(LocalContext, NULL);
pContext = NULL;
}
if(!pContext)
{
pContext = g_pContextList;
while(pContext && !pContext->InUse)
pContext = pContext->next;
}
if(pContext)
SuspendContext(pContext);
ProcessContext(NULL);
return pContext;
}
/*
alcMakeContextCurrent
Makes the given Context the active Context
*/
ALCAPI ALCboolean ALCAPIENTRY alcMakeContextCurrent(ALCcontext *context)
{
ALCcontext *ALContext;
ALboolean bReturn = AL_TRUE;
SuspendContext(NULL);
// context must be a valid Context or NULL
if(context == NULL || IsContext(context))
{
if((ALContext=GetContextSuspended()) != NULL)
{
ALContext->InUse=AL_FALSE;
ProcessContext(ALContext);
}
if((ALContext=context) != NULL && ALContext->Device)
{
SuspendContext(ALContext);
ALContext->InUse=AL_TRUE;
ProcessContext(ALContext);
}
tls_set(LocalContext, NULL);
}
else
{
alcSetError(ALC_INVALID_CONTEXT);
bReturn = AL_FALSE;
}
ProcessContext(NULL);
return bReturn;
}
/*
alcMakeContextCurrent
Makes the given Context the active Context
*/
ALCAPI ALCboolean ALCAPIENTRY alcMakeContextCurrent(ALCcontext *context)
{
ALCcontext *ALContext;
ALboolean bReturn = AL_TRUE;
SuspendContext(NULL);
// context must be a valid Context or NULL
if ((IsContext(context)) || (context == NULL))
{
if ((ALContext=alcGetCurrentContext()))
{
SuspendContext(ALContext);
ALContext->InUse=AL_FALSE;
ProcessContext(ALContext);
}
if ((ALContext=context) && (ALContext->Device))
{
SuspendContext(ALContext);
ALContext->InUse=AL_TRUE;
ProcessContext(ALContext);
}
}
else
{
SetALCError(ALC_INVALID_CONTEXT);
bReturn = AL_FALSE;
}
ProcessContext(NULL);
return bReturn;
}
// This should probably move to another c file but for now ...
ALCAPI ALCdevice* ALCAPIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
{
ALCboolean DeviceFound = ALC_FALSE;
ALCdevice *pDevice = NULL;
ALCint i;
if(SampleSize <= 0)
{
alcSetError(ALC_INVALID_VALUE);
return NULL;
}
if(deviceName && !deviceName[0])
deviceName = NULL;
pDevice = malloc(sizeof(ALCdevice));
if (pDevice)
{
//Initialise device structure
memset(pDevice, 0, sizeof(ALCdevice));
//Validate device
pDevice->Connected = ALC_TRUE;
pDevice->IsCaptureDevice = AL_TRUE;
pDevice->szDeviceName = NULL;
pDevice->Frequency = frequency;
pDevice->Format = format;
pDevice->UpdateSize = SampleSize;
pDevice->NumUpdates = 1;
SuspendContext(NULL);
for(i = 0;BackendList[i].Init;i++)
{
pDevice->Funcs = &BackendList[i].Funcs;
if(ALCdevice_OpenCapture(pDevice, deviceName))
{
pDevice->next = g_pDeviceList;
g_pDeviceList = pDevice;
g_ulDeviceCount++;
DeviceFound = ALC_TRUE;
break;
}
}
ProcessContext(NULL);
if(!DeviceFound)
{
alcSetError(ALC_INVALID_VALUE);
free(pDevice);
pDevice = NULL;
}
}
else
alcSetError(ALC_OUT_OF_MEMORY);
return pDevice;
}
ALvoid AL_APIENTRY alGetFilteri(ALuint filter, ALenum param, ALint *piValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
ALfilter *ALFilter = (ALfilter*)ALTHUNK_LOOKUPENTRY(filter);
switch(param)
{
case AL_FILTER_TYPE:
*piValue = ALFilter->type;
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALvoid AL_APIENTRY alGetFilteriv(ALuint filter, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
switch(param)
{
case AL_FILTER_TYPE:
alGetFilteri(filter, param, piValues);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetAuxiliaryEffectSlotfv(ALuint effectslot, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
if(!Context)
{
alSetError(AL_INVALID_OPERATION);
return;
}
SuspendContext(Context);
if (alIsAuxiliaryEffectSlot(effectslot))
{
switch(param)
{
case AL_EFFECTSLOT_GAIN:
alGetAuxiliaryEffectSlotf(effectslot, param, pflValues);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALAPI void ALAPIENTRY alBufferiv(ALuint buffer, ALenum eParam, const ALint* plValues)
{
ALCcontext *pContext;
(void)plValues;
pContext = alcGetCurrentContext();
SuspendContext(pContext);
if (alIsBuffer(buffer) && (buffer != 0))
{
switch(eParam)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
{
alSetError(AL_INVALID_NAME);
}
ProcessContext(pContext);
}
ALvoid AL_APIENTRY alFilteri(ALuint filter, ALenum param, ALint iValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
ALfilter *ALFilter = (ALfilter*)ALTHUNK_LOOKUPENTRY(filter);
switch(param)
{
case AL_FILTER_TYPE:
if(iValue == AL_FILTER_NULL ||
iValue == AL_FILTER_LOWPASS)
InitFilterParams(ALFilter, iValue);
else
alSetError(AL_INVALID_VALUE);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALAPI void ALAPIENTRY alBuffer3f(ALuint buffer, ALenum eParam, ALfloat flValue1, ALfloat flValue2, ALfloat flValue3)
{
ALCcontext *pContext;
(void)flValue1;
(void)flValue2;
(void)flValue3;
pContext = alcGetCurrentContext();
SuspendContext(pContext);
if (alIsBuffer(buffer) && (buffer != 0))
{
switch(eParam)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
{
alSetError(AL_INVALID_NAME);
}
ProcessContext(pContext);
}
AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotiv(ALuint effectslot, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
if(!Context)
{
alSetError(AL_INVALID_OPERATION);
return;
}
SuspendContext(Context);
if (alIsAuxiliaryEffectSlot(effectslot))
{
switch(param)
{
case AL_EFFECTSLOT_EFFECT:
case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
alAuxiliaryEffectSloti(effectslot, param, piValues[0]);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alAuxiliaryEffectSlotf(ALuint effectslot, ALenum param, ALfloat flValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
if(!Context)
{
alSetError(AL_INVALID_OPERATION);
return;
}
SuspendContext(Context);
if (alIsAuxiliaryEffectSlot(effectslot))
{
ALeffectslot *ALEffectSlot = (ALeffectslot*)ALTHUNK_LOOKUPENTRY(effectslot);
switch(param)
{
case AL_EFFECTSLOT_GAIN:
if(flValue >= 0.0f && flValue <= 1.0f)
ALEffectSlot->Gain = flValue;
else
alSetError(AL_INVALID_VALUE);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALCAPI ALCboolean ALCAPIENTRY alcCaptureCloseDevice(ALCdevice *pDevice)
{
ALCboolean bReturn = ALC_FALSE;
ALCdevice **list;
if ((pDevice)&&(pDevice->IsCaptureDevice))
{
SuspendContext(NULL);
list = &g_pDeviceList;
while(*list != pDevice)
list = &(*list)->next;
*list = (*list)->next;
g_ulDeviceCount--;
ProcessContext(NULL);
ALCdevice_CloseCapture(pDevice);
free(pDevice);
bReturn = ALC_TRUE;
}
else
SetALCError(ALC_INVALID_DEVICE);
return bReturn;
}
/*
alcCloseDevice
Close the specified Device
*/
ALCAPI ALCboolean ALCAPIENTRY alcCloseDevice(ALCdevice *pDevice)
{
ALCboolean bReturn = ALC_FALSE;
ALCdevice **list;
if ((pDevice)&&(!pDevice->IsCaptureDevice))
{
SuspendContext(NULL);
list = &g_pDeviceList;
while(*list != pDevice)
list = &(*list)->next;
*list = (*list)->next;
g_ulDeviceCount--;
ProcessContext(NULL);
if(pDevice->Context)
alcDestroyContext(pDevice->Context);
ALCdevice_ClosePlayback(pDevice);
//Release device structure
memset(pDevice, 0, sizeof(ALCdevice));
free(pDevice);
bReturn = ALC_TRUE;
}
else
SetALCError(ALC_INVALID_DEVICE);
return bReturn;
}
ALAPI void ALAPIENTRY alGetBuffer3i(ALuint buffer, ALenum eParam, ALint* plValue1, ALint* plValue2, ALint* plValue3)
{
ALCcontext *pContext;
pContext = alcGetCurrentContext();
SuspendContext(pContext);
if ((plValue1) && (plValue2) && (plValue3))
{
if (alIsBuffer(buffer) && (buffer != 0))
{
switch(eParam)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
{
alSetError(AL_INVALID_NAME);
}
}
else
{
alSetError(AL_INVALID_VALUE);
}
ProcessContext(pContext);
}
// This should probably move to another c file but for now ...
ALCAPI ALCdevice* ALCAPIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
{
ALCboolean DeviceFound = ALC_FALSE;
ALCdevice *pDevice = NULL;
ALCint i;
InitAL();
if(deviceName && !deviceName[0])
deviceName = NULL;
pDevice = malloc(sizeof(ALCdevice));
if (pDevice)
{
if (SampleSize > 0)
{
//Initialise device structure
memset(pDevice, 0, sizeof(ALCdevice));
//Validate device
pDevice->InUse = AL_TRUE;
pDevice->IsCaptureDevice = AL_TRUE;
pDevice->Frequency = frequency;
pDevice->Format = format;
pDevice->Channels = aluChannelsFromFormat(format);
pDevice->FrameSize = aluBytesFromFormat(format) *
pDevice->Channels;
for(i = 0;BackendList[i].Init;i++)
{
pDevice->Funcs = &BackendList[i].Funcs;
if(ALCdevice_OpenCapture(pDevice, deviceName, frequency, format, SampleSize))
{
SuspendContext(NULL);
pDevice->next = g_pDeviceList;
g_pDeviceList = pDevice;
g_ulDeviceCount++;
ProcessContext(NULL);
DeviceFound = ALC_TRUE;
break;
}
}
}
else
SetALCError(ALC_INVALID_VALUE);
if(!DeviceFound)
{
free(pDevice);
pDevice = NULL;
}
}
else
SetALCError(ALC_OUT_OF_MEMORY);
return pDevice;
}
ALvoid AL_APIENTRY alGetEffectiv(ALuint effect, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
if(param == AL_EFFECT_TYPE)
{
alGetEffecti(effect, param, piValues);
}
else if(ALEffect->type == AL_EFFECT_EAXREVERB)
{
switch(param)
{
case AL_EAXREVERB_DECAY_HFLIMIT:
alGetEffecti(effect, param, piValues);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else if(ALEffect->type == AL_EFFECT_REVERB)
{
switch(param)
{
case AL_REVERB_DECAY_HFLIMIT:
alGetEffecti(effect, param, piValues);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else if(ALEffect->type == AL_EFFECT_ECHO)
{
switch(param)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_ENUM);
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGenAuxiliaryEffectSlots(ALsizei n, ALuint *effectslots)
{
ALCcontext *Context;
ALsizei i;
Context = alcGetCurrentContext();
if(!Context)
{
alSetError(AL_INVALID_OPERATION);
return;
}
SuspendContext(Context);
if (n > 0)
{
/* NOTE: We only support one slot currently */
if(n == 1 && Context->AuxiliaryEffectSlotCount == 0)
{
// Check that enough memory has been allocted in the 'effectslots' array for n Effect Slots
if (!IsBadWritePtr((void*)effectslots, n * sizeof(ALuint)))
{
ALeffectslot **list = &Context->AuxiliaryEffectSlot;
while(*list)
list = &(*list)->next;
i = 0;
while(i < n)
{
*list = calloc(1, sizeof(ALeffectslot));
if(!(*list))
{
// We must have run out or memory
alDeleteAuxiliaryEffectSlots(i, effectslots);
alSetError(AL_OUT_OF_MEMORY);
break;
}
(*list)->Gain = 1.0;
(*list)->AuxSendAuto = AL_TRUE;
(*list)->refcount = 0;
effectslots[i] = (ALuint)ALTHUNK_ADDENTRY(*list);
(*list)->effectslot = effectslots[i];
Context->AuxiliaryEffectSlotCount++;
i++;
list = &(*list)->next;
}
}
}
else
alSetError(AL_INVALID_OPERATION);
}
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alDeleteEffects(ALsizei n, ALuint *effects)
{
ALCcontext *Context;
ALeffect *ALEffect;
ALsizei i;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (n >= 0)
{
// Check that all effects are valid
for (i = 0; i < n; i++)
{
if (!alIsEffect(effects[i]))
{
alSetError(AL_INVALID_NAME);
break;
}
}
if (i == n)
{
// All effects are valid
for (i = 0; i < n; i++)
{
// Recheck that the effect is valid, because there could be duplicated names
if (effects[i] && alIsEffect(effects[i]))
{
ALeffect **list;
ALEffect = ((ALeffect*)ALTHUNK_LOOKUPENTRY(effects[i]));
// Remove Source from list of Sources
list = &g_EffectList;
while(*list && *list != ALEffect)
list = &(*list)->next;
if(*list)
*list = (*list)->next;
ALTHUNK_REMOVEENTRY(ALEffect->effect);
memset(ALEffect, 0, sizeof(ALeffect));
free(ALEffect);
g_EffectCount--;
}
}
}
}
else
alSetError(AL_INVALID_VALUE);
ProcessContext(Context);
}
ALvoid AL_APIENTRY alDeleteFilters(ALsizei n, ALuint *filters)
{
ALCcontext *Context;
ALfilter *ALFilter;
ALsizei i;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (n >= 0)
{
// Check that all filters are valid
for (i = 0; i < n; i++)
{
if (!alIsFilter(filters[i]))
{
alSetError(AL_INVALID_NAME);
break;
}
}
if (i == n)
{
// All filters are valid
for (i = 0; i < n; i++)
{
// Recheck that the filter is valid, because there could be duplicated names
if (filters[i] && alIsFilter(filters[i]))
{
ALfilter **list;
ALFilter = ((ALfilter*)ALTHUNK_LOOKUPENTRY(filters[i]));
// Remove Source from list of Sources
list = &g_FilterList;
while(*list && *list != ALFilter)
list = &(*list)->next;
if(*list)
*list = (*list)->next;
ALTHUNK_REMOVEENTRY(ALFilter->filter);
memset(ALFilter, 0, sizeof(ALfilter));
free(ALFilter);
g_FilterCount--;
}
}
}
}
else
alSetError(AL_INVALID_VALUE);
ProcessContext(Context);
}
/*
alcDestroyContext
Remove a Context
*/
ALCAPI ALCvoid ALCAPIENTRY alcDestroyContext(ALCcontext *context)
{
ALCcontext **list;
InitAL();
// Lock context list
SuspendContext(NULL);
if (IsContext(context))
{
// Lock context
SuspendContext(context);
ReleaseALSources(context);
ReleaseALAuxiliaryEffectSlots(context);
context->Device->Context = NULL;
list = &g_pContextList;
while(*list != context)
list = &(*list)->next;
*list = (*list)->next;
g_ulContextCount--;
// Unlock context
ProcessContext(context);
ExitContext(context);
// Free memory (MUST do this after ProcessContext)
memset(context, 0, sizeof(ALCcontext));
free(context);
}
else
SetALCError(ALC_INVALID_CONTEXT);
ProcessContext(NULL);
}
/*
alcGetContextsDevice
Returns the Device that a particular Context is attached to
*/
ALCAPI ALCdevice* ALCAPIENTRY alcGetContextsDevice(ALCcontext *pContext)
{
ALCdevice *pDevice = NULL;
SuspendContext(NULL);
if (IsContext(pContext))
pDevice = pContext->Device;
else
SetALCError(ALC_INVALID_CONTEXT);
ProcessContext(NULL);
return pDevice;
}
/*
IsDevice
Check pDevice is a valid Device pointer
*/
static ALCboolean IsDevice(ALCdevice *pDevice)
{
ALCdevice *pTempDevice;
SuspendContext(NULL);
pTempDevice = g_pDeviceList;
while(pTempDevice && pTempDevice != pDevice)
pTempDevice = pTempDevice->next;
ProcessContext(NULL);
return (pTempDevice ? ALC_TRUE : ALC_FALSE);
}
/*
IsContext
Check pContext is a valid Context pointer
*/
static ALCboolean IsContext(ALCcontext *pContext)
{
ALCcontext *pTempContext;
SuspendContext(NULL);
pTempContext = g_pContextList;
while (pTempContext && pTempContext != pContext)
pTempContext = pTempContext->next;
ProcessContext(NULL);
return (pTempContext ? ALC_TRUE : ALC_FALSE);
}
/*
alcGetCurrentContext
Returns the currently active Context
*/
ALCAPI ALCcontext * ALCAPIENTRY alcGetCurrentContext(ALCvoid)
{
ALCcontext *pContext = NULL;
SuspendContext(NULL);
pContext = g_pContextList;
while ((pContext) && (!pContext->InUse))
pContext = pContext->next;
ProcessContext(NULL);
return pContext;
}
ALAPI ALvoid ALAPIENTRY alGetBufferi(ALuint buffer, ALenum eParam, ALint *plValue)
{
ALCcontext *pContext;
ALbuffer *pBuffer;
pContext = alcGetCurrentContext();
SuspendContext(pContext);
if (plValue)
{
if (alIsBuffer(buffer) && (buffer != 0))
{
pBuffer = ((ALbuffer *)ALTHUNK_LOOKUPENTRY(buffer));
switch (eParam)
{
case AL_FREQUENCY:
*plValue = pBuffer->frequency;
break;
case AL_BITS:
*plValue = aluBytesFromFormat(pBuffer->format) * 8;
break;
case AL_CHANNELS:
*plValue = aluChannelsFromFormat(pBuffer->format);
break;
case AL_SIZE:
*plValue = pBuffer->size;
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
{
alSetError(AL_INVALID_NAME);
}
}
else
{
alSetError(AL_INVALID_VALUE);
}
ProcessContext(pContext);
}
static void stream_buffer_attr_callback(pa_stream *stream, void *pdata) //{{{
{
ALCdevice *Device = pdata;
pulse_data *data = Device->ExtraData;
SuspendContext(NULL);
data->attr = *(ppa_stream_get_buffer_attr(stream));
Device->UpdateSize = 20 * Device->Frequency / 1000;
Device->NumUpdates = data->attr.tlength/data->frame_size / Device->UpdateSize;
if(Device->NumUpdates == 0)
Device->NumUpdates = 1;
ProcessContext(NULL);
}//}}}
/*
* alGenBuffers(ALsizei n, ALuint *puiBuffers)
*
* Generates n AL Buffers, and stores the Buffers Names in the array pointed to by puiBuffers
*/
ALAPI ALvoid ALAPIENTRY alGenBuffers(ALsizei n,ALuint *puiBuffers)
{
ALCcontext *Context;
ALsizei i=0;
Context = alcGetCurrentContext();
SuspendContext(Context);
// Check that we are actually generation some Buffers
if (n > 0)
{
// Check the pointer is valid (and points to enough memory to store Buffer Names)
if (!IsBadWritePtr((void*)puiBuffers, n * sizeof(ALuint)))
{
ALbuffer **list = &g_pBuffers;
while(*list)
list = &(*list)->next;
// Create all the new Buffers
while(i < n)
{
*list = calloc(1, sizeof(ALbuffer));
if(!(*list))
{
alDeleteBuffers(i, puiBuffers);
alSetError(AL_OUT_OF_MEMORY);
break;
}
puiBuffers[i] = (ALuint)ALTHUNK_ADDENTRY(*list);
(*list)->state = UNUSED;
g_uiBufferCount++;
i++;
list = &(*list)->next;
}
}
else
{
// Pointer does not point to enough memory to write Buffer names
alSetError(AL_INVALID_VALUE);
}
}
ProcessContext(Context);
return;
}
AL_API ALboolean AL_APIENTRY alIsEffect(ALuint effect)
{
ALCcontext *Context;
ALeffect **list;
Context = alcGetCurrentContext();
SuspendContext(Context);
list = &g_EffectList;
while(*list && (*list)->effect != effect)
list = &(*list)->next;
ProcessContext(Context);
return ((*list || !effect) ? AL_TRUE : AL_FALSE);
}
ALboolean AL_APIENTRY alIsFilter(ALuint filter)
{
ALCcontext *Context;
ALfilter **list;
Context = alcGetCurrentContext();
SuspendContext(Context);
list = &g_FilterList;
while(*list && (*list)->filter != filter)
list = &(*list)->next;
ProcessContext(Context);
return ((*list || !filter) ? AL_TRUE : AL_FALSE);
}
