OpenAL32/alExtension.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 1999-2007 by authors.
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26
  27 #include "alError.h"
  28 #include "alMain.h"
  29 #include "alFilter.h"
  30 #include "alEffect.h"
  31 #include "alAuxEffectSlot.h"
  32 #include "alSource.h"
  33 #include "alBuffer.h"
  34 #include "AL/al.h"
  35 #include "AL/alc.h"
  36
  37
  38 const struct EffectList EffectList[] = {
  39     { "eaxreverb",  EAXREVERB,  "AL_EFFECT_EAXREVERB",      AL_EFFECT_EAXREVERB },
  40     { "reverb",     REVERB,     "AL_EFFECT_REVERB",         AL_EFFECT_REVERB },
  41 #if 0
  42     { "autowah",    AUTOWAH,    "AL_EFFECT_AUTOWAH",        AL_EFFECT_AUTOWAH },
  43 #endif
  44     { "chorus",     CHORUS,     "AL_EFFECT_CHORUS",         AL_EFFECT_CHORUS },
  45     { "compressor", COMPRESSOR, "AL_EFFECT_COMPRESSOR",     AL_EFFECT_COMPRESSOR },
  46     { "distortion", DISTORTION, "AL_EFFECT_DISTORTION",     AL_EFFECT_DISTORTION },
  47     { "echo",       ECHO,       "AL_EFFECT_ECHO",           AL_EFFECT_ECHO },
  48     { "equalizer",  EQUALIZER,  "AL_EFFECT_EQUALIZER",      AL_EFFECT_EQUALIZER },
  49     { "flanger",    FLANGER,    "AL_EFFECT_FLANGER",        AL_EFFECT_FLANGER },
  50     { "modulator",  MODULATOR,  "AL_EFFECT_RING_MODULATOR", AL_EFFECT_RING_MODULATOR },
  51     { "dedicated",  DEDICATED,  "AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT", AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT },
  52     { "dedicated",  DEDICATED,  "AL_EFFECT_DEDICATED_DIALOGUE", AL_EFFECT_DEDICATED_DIALOGUE },
  53     { NULL, 0, NULL, (ALenum)0 }
  54 };
  55
  56
  57 AL_API ALboolean AL_APIENTRY alIsExtensionPresent(const ALchar *extName)
  58 {
  59     ALboolean ret = AL_FALSE;
  60     ALCcontext *context;
  61     const char *ptr;
  62     size_t len;
  63
  64     context = GetContextRef();
  65     if(!context) return AL_FALSE;
  66
  67     if(!(extName))
  68         SET_ERROR_AND_GOTO(context, AL_INVALID_VALUE, done);
  69
  70     len = strlen(extName);
  71     ptr = context->ExtensionList;
  72     while(ptr && *ptr)
  73     {
  74         if(strncasecmp(ptr, extName, len) == 0 &&
  75            (ptr[len] == '\0' || isspace(ptr[len])))
  76         {
  77             ret = AL_TRUE;
  78             break;
  79         }
  80         if((ptr=strchr(ptr, ' ')) != NULL)
  81         {
  82             do {
  83                 ++ptr;
  84             } while(isspace(*ptr));
  85         }
  86     }
  87
  88 done:
  89     ALCcontext_DecRef(context);
  90     return ret;
  91 }
  92
  93
  94 AL_API ALvoid* AL_APIENTRY alGetProcAddress(const ALchar *funcName)
  95 {
  96     if(!funcName)
  97         return NULL;
  98     return alcGetProcAddress(NULL, funcName);
  99 }
 100
 101 AL_API ALenum AL_APIENTRY alGetEnumValue(const ALchar *enumName)
 102 {
 103     if(!enumName)
 104         return (ALenum)0;
 105     return alcGetEnumValue(NULL, enumName);
 106 }