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., 59 Temple Place - Suite 330,
  17  *  Boston, MA  02111-1307, 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     { "echo",      ECHO,      "AL_EFFECT_ECHO",           AL_EFFECT_ECHO },
  42     { "modulator", MODULATOR, "AL_EFFECT_RING_MODULATOR", AL_EFFECT_RING_MODULATOR },
  43     { "dedicated", DEDICATED, "AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT", AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT },
  44     { "dedicated", DEDICATED, "AL_EFFECT_DEDICATED_DIALOGUE", AL_EFFECT_DEDICATED_DIALOGUE },
  45     { NULL, 0, NULL, (ALenum)0 }
  46 };
  47
  48
  49 AL_API ALboolean AL_APIENTRY alIsExtensionPresent(const ALchar *extName)
  50 {
  51     ALboolean ret = AL_FALSE;
  52     ALCcontext *Context;
  53     const char *ptr;
  54     size_t len;
  55
  56     Context = GetContextRef();
  57     if(!Context) return AL_FALSE;
  58
  59     al_try
  60     {
  61         CHECK_VALUE(Context, extName);
  62
  63         len = strlen(extName);
  64         ptr = Context->ExtensionList;
  65         while(ptr && *ptr)
  66         {
  67             if(strncasecmp(ptr, extName, len) == 0 &&
  68                (ptr[len] == '\0' || isspace(ptr[len])))
  69             {
  70                 ret = AL_TRUE;
  71                 break;
  72             }
  73             if((ptr=strchr(ptr, ' ')) != NULL)
  74             {
  75                 do {
  76                     ++ptr;
  77                 } while(isspace(*ptr));
  78             }
  79         }
  80     }
  81     al_endtry;
  82
  83     ALCcontext_DecRef(Context);
  84     return ret;
  85 }
  86
  87
  88 AL_API ALvoid* AL_APIENTRY alGetProcAddress(const ALchar *funcName)
  89 {
  90     if(!funcName)
  91         return NULL;
  92     return alcGetProcAddress(NULL, funcName);
  93 }
  94
  95 AL_API ALenum AL_APIENTRY alGetEnumValue(const ALchar *enumName)
  96 {
  97     if(!enumName)
  98         return (ALenum)0;
  99     return alcGetEnumValue(NULL, enumName);
 100 }