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 <stdlib.h>
  22 #include <string.h>
  23 #include <ctype.h>
  24 #include "alExtension.h"
  25 #include "alError.h"
  26 #include "alMain.h"
  27 #include "AL/al.h"
  28 #include "AL/alc.h"
  29
  30 static ALfunction  function[]=   {
  31     { "alEnable",                   (ALvoid *) alEnable                  },
  32     { "alDisable",                  (ALvoid *) alDisable                 },
  33     { "alIsEnabled",                (ALvoid *) alIsEnabled               },
  34     { "alGetString",                (ALvoid *) alGetString               },
  35     { "alGetBooleanv",              (ALvoid *) alGetBooleanv             },
  36     { "alGetIntegerv",              (ALvoid *) alGetIntegerv             },
  37     { "alGetFloatv",                (ALvoid *) alGetFloatv               },
  38     { "alGetDoublev",               (ALvoid *) alGetDoublev              },
  39     { "alGetBoolean",               (ALvoid *) alGetBoolean              },
  40     { "alGetInteger",               (ALvoid *) alGetInteger              },
  41     { "alGetFloat",                 (ALvoid *) alGetFloat                },
  42     { "alGetDouble",                (ALvoid *) alGetDouble               },
  43     { "alGetError",                 (ALvoid *) alGetError                },
  44     { "alIsExtensionPresent",       (ALvoid *) alIsExtensionPresent      },
  45     { "alGetProcAddress",           (ALvoid *) alGetProcAddress          },
  46     { "alGetEnumValue",             (ALvoid *) alGetEnumValue            },
  47     { "alListenerf",                (ALvoid *) alListenerf               },
  48     { "alListener3f",               (ALvoid *) alListener3f              },
  49     { "alListenerfv",               (ALvoid *) alListenerfv              },
  50     { "alListeneri",                (ALvoid *) alListeneri               },
  51     { "alListener3i",               (ALvoid *) alListener3i              },
  52     { "alListeneriv",               (ALvoid *) alListeneriv              },
  53     { "alGetListenerf",             (ALvoid *) alGetListenerf            },
  54     { "alGetListener3f",            (ALvoid *) alGetListener3f           },
  55     { "alGetListenerfv",            (ALvoid *) alGetListenerfv           },
  56     { "alGetListeneri",             (ALvoid *) alGetListeneri            },
  57     { "alGetListener3i",            (ALvoid *) alGetListener3i           },
  58     { "alGetListeneriv",            (ALvoid *) alGetListeneriv           },
  59     { "alGenSources",               (ALvoid *) alGenSources              },
  60     { "alDeleteSources",            (ALvoid *) alDeleteSources           },
  61     { "alIsSource",                 (ALvoid *) alIsSource                },
  62     { "alSourcef",                  (ALvoid *) alSourcef                 },
  63     { "alSource3f",                 (ALvoid *) alSource3f                },
  64     { "alSourcefv",                 (ALvoid *) alSourcefv                },
  65     { "alSourcei",                  (ALvoid *) alSourcei                 },
  66     { "alSource3i",                 (ALvoid *) alSource3i                },
  67     { "alSourceiv",                 (ALvoid *) alSourceiv                },
  68     { "alGetSourcef",               (ALvoid *) alGetSourcef              },
  69     { "alGetSource3f",              (ALvoid *) alGetSource3f             },
  70     { "alGetSourcefv",              (ALvoid *) alGetSourcefv             },
  71     { "alGetSourcei",               (ALvoid *) alGetSourcei              },
  72     { "alGetSource3i",              (ALvoid *) alGetSource3i             },
  73     { "alGetSourceiv",              (ALvoid *) alGetSourceiv             },
  74     { "alSourcePlayv",              (ALvoid *) alSourcePlayv             },
  75     { "alSourceStopv",              (ALvoid *) alSourceStopv             },
  76     { "alSourceRewindv",            (ALvoid *) alSourceRewindv           },
  77     { "alSourcePausev",             (ALvoid *) alSourcePausev            },
  78     { "alSourcePlay",               (ALvoid *) alSourcePlay              },
  79     { "alSourceStop",               (ALvoid *) alSourceStop              },
  80     { "alSourceRewind",             (ALvoid *) alSourceRewind            },
  81     { "alSourcePause",              (ALvoid *) alSourcePause             },
  82     { "alSourceQueueBuffers",       (ALvoid *) alSourceQueueBuffers      },
  83     { "alSourceUnqueueBuffers",     (ALvoid *) alSourceUnqueueBuffers    },
  84     { "alGenBuffers",               (ALvoid *) alGenBuffers              },
  85     { "alDeleteBuffers",            (ALvoid *) alDeleteBuffers           },
  86     { "alIsBuffer",                 (ALvoid *) alIsBuffer                },
  87     { "alBufferData",               (ALvoid *) alBufferData              },
  88     { "alBufferf",                  (ALvoid *) alBufferf                 },
  89     { "alBuffer3f",                 (ALvoid *) alBuffer3f                },
  90     { "alBufferfv",                 (ALvoid *) alBufferfv                },
  91     { "alBufferi",                  (ALvoid *) alBufferi                 },
  92     { "alBuffer3i",                 (ALvoid *) alBuffer3i                },
  93     { "alBufferiv",                 (ALvoid *) alBufferiv                },
  94     { "alGetBufferf",               (ALvoid *) alGetBufferf              },
  95     { "alGetBuffer3f",              (ALvoid *) alGetBuffer3f             },
  96     { "alGetBufferfv",              (ALvoid *) alGetBufferfv             },
  97     { "alGetBufferi",               (ALvoid *) alGetBufferi              },
  98     { "alGetBuffer3i",              (ALvoid *) alGetBuffer3i             },
  99     { "alGetBufferiv",              (ALvoid *) alGetBufferiv             },
 100     { "alDopplerFactor",            (ALvoid *) alDopplerFactor           },
 101     { "alDopplerVelocity",          (ALvoid *) alDopplerVelocity         },
 102     { "alSpeedOfSound",             (ALvoid *) alSpeedOfSound            },
 103     { "alDistanceModel",            (ALvoid *) alDistanceModel           },
 104     { NULL,                         (ALvoid *) NULL                      } };
 105
 106 static ALenums enumeration[]={
 107     // Types
 108     { (ALchar *)"AL_INVALID",                           AL_INVALID                          },
 109     { (ALchar *)"AL_NONE",                              AL_NONE                             },
 110     { (ALchar *)"AL_FALSE",                             AL_FALSE                            },
 111     { (ALchar *)"AL_TRUE",                              AL_TRUE                             },
 112
 113     // Source and Listener Properties
 114     { (ALchar *)"AL_SOURCE_RELATIVE",                   AL_SOURCE_RELATIVE                  },
 115     { (ALchar *)"AL_CONE_INNER_ANGLE",                  AL_CONE_INNER_ANGLE                 },
 116     { (ALchar *)"AL_CONE_OUTER_ANGLE",                  AL_CONE_OUTER_ANGLE                 },
 117     { (ALchar *)"AL_PITCH",                             AL_PITCH                            },
 118     { (ALchar *)"AL_POSITION",                          AL_POSITION                         },
 119     { (ALchar *)"AL_DIRECTION",                         AL_DIRECTION                        },
 120     { (ALchar *)"AL_VELOCITY",                          AL_VELOCITY                         },
 121     { (ALchar *)"AL_LOOPING",                           AL_LOOPING                          },
 122     { (ALchar *)"AL_BUFFER",                            AL_BUFFER                           },
 123     { (ALchar *)"AL_GAIN",                              AL_GAIN                             },
 124     { (ALchar *)"AL_MIN_GAIN",                          AL_MIN_GAIN                         },
 125     { (ALchar *)"AL_MAX_GAIN",                          AL_MAX_GAIN                         },
 126     { (ALchar *)"AL_ORIENTATION",                       AL_ORIENTATION                      },
 127     { (ALchar *)"AL_REFERENCE_DISTANCE",                AL_REFERENCE_DISTANCE               },
 128     { (ALchar *)"AL_ROLLOFF_FACTOR",                    AL_ROLLOFF_FACTOR                   },
 129     { (ALchar *)"AL_CONE_OUTER_GAIN",                   AL_CONE_OUTER_GAIN                  },
 130     { (ALchar *)"AL_MAX_DISTANCE",                      AL_MAX_DISTANCE                     },
 131     { (ALchar *)"AL_SEC_OFFSET",                        AL_SEC_OFFSET                       },
 132     { (ALchar *)"AL_SAMPLE_OFFSET",                     AL_SAMPLE_OFFSET                    },
 133     { (ALchar *)"AL_BYTE_OFFSET",                       AL_BYTE_OFFSET                      },
 134     { (ALchar *)"AL_SOURCE_TYPE",                       AL_SOURCE_TYPE                      },
 135     { (ALchar *)"AL_STATIC",                            AL_STATIC                           },
 136     { (ALchar *)"AL_STREAMING",                         AL_STREAMING                        },
 137     { (ALchar *)"AL_UNDETERMINED",                      AL_UNDETERMINED                     },
 138
 139     // Source State information
 140     { (ALchar *)"AL_SOURCE_STATE",                      AL_SOURCE_STATE                     },
 141     { (ALchar *)"AL_INITIAL",                           AL_INITIAL                          },
 142     { (ALchar *)"AL_PLAYING",                           AL_PLAYING                          },
 143     { (ALchar *)"AL_PAUSED",                            AL_PAUSED                           },
 144     { (ALchar *)"AL_STOPPED",                           AL_STOPPED                          },
 145
 146     // Queue information
 147     { (ALchar *)"AL_BUFFERS_QUEUED",                    AL_BUFFERS_QUEUED                   },
 148     { (ALchar *)"AL_BUFFERS_PROCESSED",                 AL_BUFFERS_PROCESSED                },
 149
 150     // Buffer Formats
 151     { (ALchar *)"AL_FORMAT_MONO8",                      AL_FORMAT_MONO8                     },
 152     { (ALchar *)"AL_FORMAT_MONO16",                     AL_FORMAT_MONO16                    },
 153     { (ALchar *)"AL_FORMAT_MONO_FLOAT32",               AL_FORMAT_MONO_FLOAT32              },
 154     { (ALchar *)"AL_FORMAT_STEREO8",                    AL_FORMAT_STEREO8                   },
 155     { (ALchar *)"AL_FORMAT_STEREO16",                   AL_FORMAT_STEREO16                  },
 156     { (ALchar *)"AL_FORMAT_STEREO_FLOAT32",             AL_FORMAT_STEREO_FLOAT32            },
 157     { (ALchar *)"AL_FORMAT_MONO_IMA4",                  AL_FORMAT_MONO_IMA4                 },
 158     { (ALchar *)"AL_FORMAT_STEREO_IMA4",                AL_FORMAT_STEREO_IMA4               },
 159     { (ALchar *)"AL_FORMAT_QUAD8",                      AL_FORMAT_QUAD8                     },
 160     { (ALchar *)"AL_FORMAT_QUAD16",                     AL_FORMAT_QUAD16                    },
 161     { (ALchar *)"AL_FORMAT_QUAD32",                     AL_FORMAT_QUAD32                    },
 162     { (ALchar *)"AL_FORMAT_51CHN8",                     AL_FORMAT_51CHN8                    },
 163     { (ALchar *)"AL_FORMAT_51CHN16",                    AL_FORMAT_51CHN16                   },
 164     { (ALchar *)"AL_FORMAT_51CHN32",                    AL_FORMAT_51CHN32                   },
 165     { (ALchar *)"AL_FORMAT_61CHN8",                     AL_FORMAT_61CHN8                    },
 166     { (ALchar *)"AL_FORMAT_61CHN16",                    AL_FORMAT_61CHN16                   },
 167     { (ALchar *)"AL_FORMAT_61CHN32",                    AL_FORMAT_61CHN32                   },
 168     { (ALchar *)"AL_FORMAT_71CHN8",                     AL_FORMAT_71CHN8                    },
 169     { (ALchar *)"AL_FORMAT_71CHN16",                    AL_FORMAT_71CHN16                   },
 170     { (ALchar *)"AL_FORMAT_71CHN32",                    AL_FORMAT_71CHN32                   },
 171     { (ALchar *)"AL_FORMAT_REAR8",                      AL_FORMAT_REAR8                     },
 172     { (ALchar *)"AL_FORMAT_REAR16",                     AL_FORMAT_REAR16                    },
 173     { (ALchar *)"AL_FORMAT_REAR32",                     AL_FORMAT_REAR32                    },
 174
 175     // Buffer attributes
 176     { (ALchar *)"AL_FREQUENCY",                         AL_FREQUENCY                        },
 177     { (ALchar *)"AL_BITS",                              AL_BITS                             },
 178     { (ALchar *)"AL_CHANNELS",                          AL_CHANNELS                         },
 179     { (ALchar *)"AL_SIZE",                              AL_SIZE                             },
 180
 181     // Buffer States (not supported yet)
 182     { (ALchar *)"AL_UNUSED",                            AL_UNUSED                           },
 183     { (ALchar *)"AL_PENDING",                           AL_PENDING                          },
 184     { (ALchar *)"AL_PROCESSED",                         AL_PROCESSED                        },
 185
 186     // AL Error Messages
 187     { (ALchar *)"AL_NO_ERROR",                          AL_NO_ERROR                         },
 188     { (ALchar *)"AL_INVALID_NAME",                      AL_INVALID_NAME                     },
 189     { (ALchar *)"AL_INVALID_ENUM",                      AL_INVALID_ENUM                     },
 190     { (ALchar *)"AL_INVALID_VALUE",                     AL_INVALID_VALUE                    },
 191     { (ALchar *)"AL_INVALID_OPERATION",                 AL_INVALID_OPERATION                },
 192     { (ALchar *)"AL_OUT_OF_MEMORY",                     AL_OUT_OF_MEMORY                    },
 193
 194     // Context strings
 195     { (ALchar *)"AL_VENDOR",                            AL_VENDOR                           },
 196     { (ALchar *)"AL_VERSION",                           AL_VERSION                          },
 197     { (ALchar *)"AL_RENDERER",                          AL_RENDERER                         },
 198     { (ALchar *)"AL_EXTENSIONS",                        AL_EXTENSIONS                       },
 199
 200     // Global states
 201     { (ALchar *)"AL_DOPPLER_FACTOR",                    AL_DOPPLER_FACTOR                   },
 202     { (ALchar *)"AL_DOPPLER_VELOCITY",                  AL_DOPPLER_VELOCITY                 },
 203     { (ALchar *)"AL_DISTANCE_MODEL",                    AL_DISTANCE_MODEL                   },
 204     { (ALchar *)"AL_SPEED_OF_SOUND",                    AL_SPEED_OF_SOUND                   },
 205
 206     // Distance Models
 207     { (ALchar *)"AL_INVERSE_DISTANCE",                  AL_INVERSE_DISTANCE                 },
 208     { (ALchar *)"AL_INVERSE_DISTANCE_CLAMPED",          AL_INVERSE_DISTANCE_CLAMPED         },
 209     { (ALchar *)"AL_LINEAR_DISTANCE",                   AL_LINEAR_DISTANCE                  },
 210     { (ALchar *)"AL_LINEAR_DISTANCE_CLAMPED",           AL_LINEAR_DISTANCE_CLAMPED          },
 211     { (ALchar *)"AL_EXPONENT_DISTANCE",                 AL_EXPONENT_DISTANCE                },
 212     { (ALchar *)"AL_EXPONENT_DISTANCE_CLAMPED",         AL_EXPONENT_DISTANCE_CLAMPED        },
 213
 214     // Default
 215     { (ALchar *)NULL,                                (ALenum  ) 0                         } };
 216
 217
 218
 219 ALAPI ALboolean ALAPIENTRY alIsExtensionPresent(const ALchar *extName)
 220 {
 221     ALboolean bIsSupported = AL_FALSE;
 222     ALCcontext *pContext;
 223     char *ptr, *ext;
 224
 225     if (!extName)
 226     {
 227         alSetError(AL_INVALID_VALUE);
 228         return AL_FALSE;
 229     }
 230
 231     pContext = alcGetCurrentContext();
 232     if(!pContext)
 233     {
 234         alSetError(AL_INVALID_OPERATION);
 235         return AL_FALSE;
 236     }
 237
 238     ext = strdup(extName);
 239     ptr = ext;
 240     do {
 241         *ptr = (char)toupper(*ptr);
 242     } while(*(ptr++));
 243
 244     SuspendContext(pContext);
 245
 246     ptr = pContext->ExtensionList;
 247     while((ptr=strstr(ptr, ext)) != NULL)
 248     {
 249         if(ptr == pContext->ExtensionList || ptr[-1] == ' ')
 250         {
 251             char e = ptr[strlen(ext)];
 252             if(e == ' ' || e == 0)
 253             {
 254                 bIsSupported = AL_TRUE;
 255                 break;
 256             }
 257         }
 258         ptr++;
 259     }
 260
 261     ProcessContext(pContext);
 262
 263     free(ext);
 264     return bIsSupported;
 265 }
 266
 267
 268 ALAPI ALvoid * ALAPIENTRY alGetProcAddress(const ALchar *funcName)
 269 {
 270     ALsizei i = 0;
 271
 272     while(function[i].funcName &&
 273           strcmp((char*)function[i].funcName, (char*)funcName) != 0)
 274         i++;
 275
 276     return function[i].address;
 277 }
 278
 279 /* NOTE: This function must be able to run without a context! */
 280 ALAPI ALenum ALAPIENTRY alGetEnumValue(const ALchar *enumName)
 281 {
 282     ALsizei i = 0;
 283
 284     while(enumeration[i].enumName &&
 285           strcmp(enumeration[i].enumName, enumName) != 0)
 286         i++;
 287
 288     return enumeration[i].value;
 289 }