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/**
* OpenAL cross platform audio library
* Copyright (C) 1999-2007 by authors.
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
* Or go to http://www.gnu.org/copyleft/lgpl.html
*/
#include <stdlib.h>
#include "config.h"
#include "AL/al.h"
#include "AL/alc.h"
#include "alMain.h"
#include "alEffect.h"
#include "alThunk.h"
#include "alError.h"
static ALeffect *g_EffectList;
static ALuint g_EffectCount;
static void InitEffectParams(ALeffect *effect, ALenum type);
AL_API ALvoid AL_APIENTRY alGenEffects(ALsizei n, ALuint *effects)
{
ALCcontext *Context;
ALsizei i;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (n > 0)
{
// Check that enough memory has been allocted in the 'effects' array for n Effects
if (!IsBadWritePtr((void*)effects, n * sizeof(ALuint)))
{
ALeffect **list = &g_EffectList;
while(*list)
list = &(*list)->next;
i = 0;
while(i < n)
{
*list = calloc(1, sizeof(ALeffect));
if(!(*list))
{
// We must have run out or memory
alDeleteEffects(i, effects);
alSetError(AL_OUT_OF_MEMORY);
break;
}
effects[i] = (ALuint)ALTHUNK_ADDENTRY(*list);
(*list)->effect = effects[i];
InitEffectParams(*list, AL_EFFECT_NULL);
g_EffectCount++;
i++;
}
}
}
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);
}
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);
}
AL_API ALvoid AL_APIENTRY alEffecti(ALuint effect, ALenum param, ALint iValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
switch(param)
{
case AL_EFFECT_TYPE:
if(iValue == AL_EFFECT_NULL)
InitEffectParams(ALEffect, iValue);
else
alSetError(AL_INVALID_VALUE);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alEffectiv(ALuint effect, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
switch(param)
{
case AL_EFFECT_TYPE:
alEffecti(effect, param, piValues[0]);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alEffectf(ALuint effect, ALenum param, ALfloat flValue)
{
ALCcontext *Context;
(void)flValue;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
switch(param)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alEffectfv(ALuint effect, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
(void)pflValues;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
switch(param)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetEffecti(ALuint effect, ALenum param, ALint *piValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
switch(param)
{
case AL_EFFECT_TYPE:
*piValue = ALEffect->type;
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetEffectiv(ALuint effect, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
switch(param)
{
case AL_EFFECT_TYPE:
alGetEffecti(effect, param, piValues);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetEffectf(ALuint effect, ALenum param, ALfloat *pflValue)
{
ALCcontext *Context;
(void)pflValue;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
switch(param)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alGetEffectfv(ALuint effect, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
(void)pflValues;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (effect && alIsEffect(effect))
{
switch(param)
{
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALvoid ReleaseALEffects(ALvoid)
{
#ifdef _DEBUG
if(g_EffectCount > 0)
AL_PRINT("exit() %d Effect(s) NOT deleted\n", g_EffectCount);
#endif
while(g_EffectList)
{
ALeffect *temp = g_EffectList;
g_EffectList = g_EffectList->next;
// Release effect structure
memset(temp, 0, sizeof(ALeffect));
free(temp);
}
g_EffectCount = 0;
}
static void InitEffectParams(ALeffect *effect, ALenum type)
{
effect->type = type;
}
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