author | koda |
Thu, 02 Jul 2009 00:58:46 +0000 | |
changeset 2218 | 59a9bebc4988 |
parent 2216 | 82e7da49c26a |
child 2220 | 110266ba2ef7 |
permissions | -rw-r--r-- |
2191 | 1 |
/* |
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* OpenAL Bridge - a simple portable library for OpenAL interface |
|
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* Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*/ |
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2213 | 19 |
#include "globals.h" |
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#include "wrappers.h" |
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#include "alc.h" |
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#include "loaders.h" |
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#include "endianness.h" |
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#ifdef __CPLUSPLUS |
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extern "C" { |
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#endif |
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2212 | 29 |
/*Sources are points emitting sound*/ |
2191 | 30 |
ALuint *Sources; |
2212 | 31 |
/*Buffers hold sound data*/ |
2191 | 32 |
ALuint *Buffers; |
2212 | 33 |
/*index for Sources and Buffers*/ |
2213 | 34 |
ALuint globalindex, globalsize, increment; |
2212 | 35 |
/*Position of the source sound*/ |
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ALfloat SourcePos[] = { 0.0, 0.0, 0.0 }; |
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/*Velocity of the source sound*/ |
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ALfloat SourceVel[] = { 0.0, 0.0, 0.0 }; |
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ALint openalReady = AL_FALSE; |
2191 | 41 |
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ALint openal_close(void) { |
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2213 | 43 |
/*Stop all sounds, deallocate all memory and close OpenAL */ |
2191 | 44 |
ALCcontext *context; |
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ALCdevice *device; |
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if(openalReady == AL_FALSE) |
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{ |
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fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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return AL_FALSE; |
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} |
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alSourceStopv (globalsize, Sources); |
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alDeleteSources (globalsize, Sources); |
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alDeleteBuffers (globalsize, Buffers); |
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free(Sources); |
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free(Buffers); |
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context = alcGetCurrentContext(); |
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device = alcGetContextsDevice(context); |
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alcMakeContextCurrent(NULL); |
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alcDestroyContext(context); |
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alcCloseDevice(device); |
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openalReady = AL_FALSE; |
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return AL_TRUE; |
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} |
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ALint openal_ready(void) { |
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return openalReady; |
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} |
2191 | 75 |
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ALint openal_init(uint32_t memorysize) { |
2213 | 77 |
/*Initialize an OpenAL contex and allocate memory space for data and buffers*/ |
2191 | 78 |
ALCcontext *context; |
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ALCdevice *device; |
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const ALCchar *default_device; |
2191 | 81 |
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2212 | 82 |
/*Position of the listener*/ |
2191 | 83 |
ALfloat ListenerPos[] = { 0.0, 0.0, 0.0 }; |
2212 | 84 |
/*Velocity of the listener*/ |
2191 | 85 |
ALfloat ListenerVel[] = { 0.0, 0.0, 0.0 }; |
2212 | 86 |
/*Orientation of the listener. (first 3 elements are "at", second 3 are "up")*/ |
2191 | 87 |
ALfloat ListenerOri[] = { 0.0, 0.0, -1.0, 0.0, 1.0, 0.0 }; |
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if(openalReady == AL_TRUE) |
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{ |
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fprintf(stderr, "ERROR: OpenAL already initialized\n"); |
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return AL_FALSE; |
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} |
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2191 | 95 |
default_device = alcGetString(NULL, ALC_DEFAULT_DEVICE_SPECIFIER); |
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fprintf(stderr, "Using default device: %s\n", default_device); |
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if ((device = alcOpenDevice(default_device)) == NULL) { |
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fprintf(stderr, "ERROR: Failed to open sound device\n"); |
2191 | 100 |
return AL_FALSE; |
101 |
} |
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2191 | 103 |
context = alcCreateContext(device, NULL); |
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alcMakeContextCurrent(context); |
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alcProcessContext(context); |
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106 |
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107 |
if (AlGetError("ERROR %d: Creating a new contex\n") != AL_TRUE) |
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return AL_FALSE; |
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109 |
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2212 | 110 |
/*allocate memory space for buffers and sources*/ |
2191 | 111 |
globalsize = memorysize; |
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increment = memorysize; |
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Buffers = (ALuint*) Malloc(sizeof(ALuint)*globalsize); |
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Sources = (ALuint*) Malloc(sizeof(ALuint)*globalsize); |
2191 | 115 |
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2212 | 116 |
/*set the listener gain, position (on xyz axes), velocity (one value for each axe) and orientation*/ |
2191 | 117 |
alListenerf (AL_GAIN, 1.0f ); |
118 |
alListenerfv(AL_POSITION, ListenerPos); |
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alListenerfv(AL_VELOCITY, ListenerVel); |
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alListenerfv(AL_ORIENTATION, ListenerOri); |
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121 |
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122 |
if (AlGetError("ERROR %d: Setting Listener properties\n") != AL_TRUE) |
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return AL_FALSE; |
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openalReady = AL_TRUE; |
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2191 | 127 |
alGetError(); /* clear any AL errors beforehand */ |
128 |
return AL_TRUE; |
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129 |
} |
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130 |
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2213 | 131 |
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2215 | 132 |
uint8_t helper_realloc (void) { |
2213 | 133 |
/*expands allocated memory when loading more sound files than expected*/ |
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globalsize += increment; |
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#ifdef DEBUG |
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fprintf(stderr, "OpenAL: Realloc in process %d\n", globalsize); |
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#endif |
2213 | 138 |
Buffers = (ALuint*) Realloc(Buffers, sizeof(ALuint)*globalsize); |
139 |
Sources = (ALuint*) Realloc(Sources, sizeof(ALuint)*globalsize); |
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141 |
return 0; |
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} |
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2191 | 144 |
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int openal_loadfile (const char *filename){ |
2213 | 146 |
/*Open a file, load into memory and allocate the Source buffer for playing*/ |
2191 | 147 |
ALenum format; |
148 |
ALsizei bitsize; |
|
149 |
ALsizei freq; |
|
2213 | 150 |
char *data; |
2191 | 151 |
uint32_t fileformat; |
2215 | 152 |
ALenum error; |
2191 | 153 |
FILE *fp; |
154 |
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if(openalReady == AL_FALSE) |
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{ |
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fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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return AL_FALSE; |
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159 |
} |
2191 | 160 |
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2213 | 161 |
/*when the buffers are all used, we can expand memory to accept new files*/ |
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if (globalindex == globalsize) |
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helper_realloc(); |
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164 |
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2191 | 165 |
/*detect the file format, as written in the first 4 bytes of the header*/ |
166 |
fp = Fopen (filename, "rb"); |
|
167 |
if (fp == NULL) |
|
168 |
return -1; |
|
169 |
error = fread (&fileformat, sizeof(uint32_t), 1, fp); |
|
170 |
fclose (fp); |
|
171 |
||
172 |
if (error < 0) { |
|
173 |
fprintf(stderr, "ERROR: file %s is too short \n", filename); |
|
174 |
return -2; |
|
175 |
} |
|
176 |
||
2212 | 177 |
/*prepare the buffer to receive data*/ |
2191 | 178 |
alGenBuffers(1, &Buffers[globalindex]); |
179 |
||
180 |
if (AlGetError("ERROR %d: Allocating memory for buffers\n") != AL_TRUE) |
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181 |
return -3; |
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182 |
||
2212 | 183 |
/*prepare the source to emit sound*/ |
2191 | 184 |
alGenSources(1, &Sources[globalindex]); |
185 |
||
186 |
if (AlGetError("ERROR %d: Allocating memory for sources\n") != AL_TRUE) |
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187 |
return -4; |
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188 |
||
189 |
||
2212 | 190 |
if (fileformat == 0x5367674F) /*check if ogg*/ |
2191 | 191 |
error = load_OggVorbis (filename, &format, &data, &bitsize, &freq); |
192 |
else { |
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2212 | 193 |
if (fileformat == 0x46464952) /*check if wav*/ |
2191 | 194 |
error = load_WavPcm (filename, &format, &data, &bitsize, &freq); |
195 |
else { |
|
196 |
fprintf(stderr, "ERROR: File format (%08X) not supported!\n", invert_endianness(fileformat)); |
|
197 |
return -5; |
|
198 |
} |
|
199 |
} |
|
200 |
||
2212 | 201 |
/*copy pcm data in one buffer*/ |
2191 | 202 |
alBufferData(Buffers[globalindex], format, data, bitsize, freq); |
2212 | 203 |
free(data); /*deallocate data to save memory*/ |
2191 | 204 |
|
205 |
if (AlGetError("ERROR %d: Writing data to buffer\n") != AL_TRUE) |
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2210 | 206 |
return -6; |
2191 | 207 |
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2212 | 208 |
/*set source properties that it will use when it's in playback*/ |
2191 | 209 |
alSourcei (Sources[globalindex], AL_BUFFER, Buffers[globalindex] ); |
210 |
alSourcef (Sources[globalindex], AL_PITCH, 1.0f ); |
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211 |
alSourcef (Sources[globalindex], AL_GAIN, 1.0f ); |
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alSourcefv(Sources[globalindex], AL_POSITION, SourcePos ); |
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alSourcefv(Sources[globalindex], AL_VELOCITY, SourceVel ); |
2191 | 214 |
alSourcei (Sources[globalindex], AL_LOOPING, 0 ); |
215 |
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216 |
if (AlGetError("ERROR %d: Setting source properties\n") != AL_TRUE) |
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return -7; |
2191 | 218 |
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219 |
alGetError(); /* clear any AL errors beforehand */ |
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220 |
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2212 | 221 |
/*returns the index of the source you just loaded, increments it and exits*/ |
2191 | 222 |
return globalindex++; |
223 |
} |
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224 |
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225 |
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2215 | 226 |
ALint openal_toggleloop (uint32_t index){ |
2191 | 227 |
/*Set or unset looping mode*/ |
228 |
ALint loop; |
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229 |
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if(openalReady == AL_FALSE) |
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{ |
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fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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return AL_FALSE; |
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} |
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2191 | 236 |
if (index >= globalsize) { |
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fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); |
2191 | 238 |
return AL_FALSE; |
239 |
} |
|
240 |
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241 |
alGetSourcei (Sources[index], AL_LOOPING, &loop); |
|
242 |
alSourcei (Sources[index], AL_LOOPING, !((uint8_t) loop) & 0x00000001); |
|
243 |
if (AlGetError("ERROR %d: Getting or setting loop property\n") != AL_TRUE) |
|
244 |
return AL_FALSE; |
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245 |
||
246 |
alGetError(); /* clear any AL errors beforehand */ |
|
247 |
||
248 |
return AL_TRUE; |
|
249 |
} |
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250 |
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251 |
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ALint openal_setvolume (uint32_t index, uint8_t percentage) { |
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if(openalReady == AL_FALSE) |
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{ |
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fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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return AL_FALSE; |
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} |
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2191 | 259 |
/*Set volume for sound number index*/ |
260 |
if (index >= globalindex) { |
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fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); |
2191 | 262 |
return AL_FALSE; |
263 |
} |
|
264 |
||
265 |
if (percentage > 100) |
|
266 |
percentage = 100; |
|
2213 | 267 |
alSourcef (Sources[index], AL_GAIN, (float) percentage/100.0f); |
2191 | 268 |
if (AlGetError("ERROR %d: Setting volume for last sound\n") != AL_TRUE) |
269 |
return AL_FALSE; |
|
270 |
||
271 |
alGetError(); /* clear any AL errors beforehand */ |
|
272 |
||
273 |
return AL_TRUE; |
|
274 |
} |
|
275 |
||
276 |
||
2215 | 277 |
ALint openal_setglobalvolume (uint8_t percentage) { |
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if(openalReady == AL_FALSE) |
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{ |
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280 |
fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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return AL_FALSE; |
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282 |
} |
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283 |
|
2191 | 284 |
/*Set volume for all sounds*/ |
285 |
if (percentage > 100) |
|
286 |
percentage = 100; |
|
2213 | 287 |
alListenerf (AL_GAIN, (float) percentage/100.0f); |
2191 | 288 |
if (AlGetError("ERROR %d: Setting global volume\n") != AL_TRUE) |
289 |
return AL_FALSE; |
|
290 |
||
291 |
alGetError(); /* clear any AL errors beforehand */ |
|
292 |
||
293 |
return AL_TRUE; |
|
294 |
} |
|
295 |
||
296 |
||
297 |
ALint openal_togglemute () { |
|
298 |
/*Mute or unmute sound*/ |
|
299 |
ALfloat mute; |
|
300 |
||
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if(openalReady == AL_FALSE) |
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{ |
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|
303 |
fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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304 |
return AL_FALSE; |
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|
305 |
} |
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|
306 |
|
2191 | 307 |
alGetListenerf (AL_GAIN, &mute); |
308 |
if (mute > 0) |
|
309 |
mute = 0; |
|
310 |
else |
|
311 |
mute = 1.0; |
|
312 |
alListenerf (AL_GAIN, mute); |
|
313 |
if (AlGetError("ERROR %d: Setting mute property\n") != AL_TRUE) |
|
314 |
return AL_FALSE; |
|
315 |
||
316 |
alGetError(); /* clear any AL errors beforehand */ |
|
317 |
||
318 |
return AL_TRUE; |
|
319 |
} |
|
320 |
||
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321 |
|
2215 | 322 |
ALint openal_fade(uint32_t index, uint16_t quantity, uint8_t direction) { |
2213 | 323 |
/*Fade in or out by calling a helper thread*/ |
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324 |
#ifndef _WIN32 |
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325 |
pthread_t thread; |
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326 |
#else |
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327 |
HANDLE Thread; |
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328 |
DWORD threadID; |
2209 | 329 |
#endif |
330 |
fade_t *fade; |
|
331 |
||
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332 |
if(openalReady == AL_FALSE) |
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|
333 |
{ |
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|
334 |
fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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335 |
return AL_FALSE; |
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|
336 |
} |
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|
337 |
|
2209 | 338 |
fade = (fade_t*) Malloc(sizeof(fade_t)); |
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fade->index = index; |
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fade->quantity = quantity; |
2191 | 341 |
|
342 |
if (index >= globalindex) { |
|
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343 |
fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); |
2191 | 344 |
return AL_FALSE; |
345 |
} |
|
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346 |
|
2213 | 347 |
if (direction == FADE_IN) |
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348 |
#ifndef _WIN32 |
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349 |
pthread_create(&thread, NULL, helper_fadein, (void*) fade); |
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350 |
#else |
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351 |
Thread = _beginthread(&helper_fadein, 0, (void*) fade); |
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352 |
#endif |
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353 |
else { |
2213 | 354 |
if (direction == FADE_OUT) |
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355 |
#ifndef _WIN32 |
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356 |
pthread_create(&thread, NULL, helper_fadeout, (void*) fade); |
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|
357 |
#else |
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358 |
Thread = _beginthread(&helper_fadeout, 0, (void*) fade); |
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|
359 |
#endif |
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360 |
else { |
2213 | 361 |
fprintf(stderr, "ERROR: unknown direction for fade (%d)\n", direction); |
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362 |
free(fade); |
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|
363 |
return AL_FALSE; |
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|
364 |
} |
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|
365 |
} |
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|
366 |
|
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|
367 |
#ifndef _WIN32 |
2194
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|
368 |
pthread_detach(thread); |
2191 | 369 |
#endif |
370 |
||
371 |
alGetError(); /* clear any AL errors beforehand */ |
|
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|
372 |
|
2191 | 373 |
return AL_TRUE; |
374 |
} |
|
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|
375 |
|
2191 | 376 |
|
2215 | 377 |
ALint openal_fadeout(uint32_t index, uint16_t quantity) { |
2213 | 378 |
/*wrapper for fadeout*/ |
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|
379 |
return openal_fade(index, quantity, FADE_OUT); |
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|
380 |
} |
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|
381 |
|
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|
382 |
|
2215 | 383 |
ALint openal_fadein(uint32_t index, uint16_t quantity) { |
2213 | 384 |
/*wrapper for fadein*/ |
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|
385 |
return openal_fade(index, quantity, FADE_IN); |
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|
386 |
} |
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|
387 |
|
2191 | 388 |
|
2215 | 389 |
ALint openal_playsound(uint32_t index){ |
2216
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|
390 |
if(openalReady == AL_FALSE) |
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|
391 |
{ |
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|
392 |
fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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|
393 |
return AL_FALSE; |
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|
394 |
} |
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|
395 |
|
2191 | 396 |
/*Play sound number index*/ |
397 |
if (index >= globalindex) { |
|
2211
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|
398 |
fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); |
2191 | 399 |
return AL_FALSE; |
400 |
} |
|
401 |
alSourcePlay(Sources[index]); |
|
402 |
if (AlGetError("ERROR %d: Playing last sound\n") != AL_TRUE) |
|
403 |
return AL_FALSE; |
|
404 |
||
405 |
alGetError(); /* clear any AL errors beforehand */ |
|
406 |
||
407 |
return AL_TRUE; |
|
408 |
} |
|
409 |
||
410 |
||
2215 | 411 |
ALint openal_pausesound(uint32_t index){ |
2216
82e7da49c26a
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|
412 |
if(openalReady == AL_FALSE) |
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|
413 |
{ |
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|
414 |
fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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|
415 |
return AL_FALSE; |
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|
416 |
} |
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changeset
|
417 |
|
2191 | 418 |
/*Pause sound number index*/ |
419 |
if (index >= globalindex) { |
|
2211
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|
420 |
fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); |
2191 | 421 |
return AL_FALSE; |
422 |
} |
|
423 |
alSourcePause(Sources[index]); |
|
424 |
if (AlGetError("ERROR %d: Pausing last sound\n") != AL_TRUE) |
|
425 |
return AL_FALSE; |
|
426 |
||
427 |
return AL_TRUE; |
|
428 |
} |
|
429 |
||
430 |
||
2215 | 431 |
ALint openal_stopsound(uint32_t index){ |
2216
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|
432 |
if(openalReady == AL_FALSE) |
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|
433 |
{ |
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diff
changeset
|
434 |
fprintf(stderr, "ERROR: OpenAL not initialized\n"); |
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|
435 |
return AL_FALSE; |
82e7da49c26a
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diff
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|
436 |
} |
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diff
changeset
|
437 |
|
2191 | 438 |
/*Stop sound number index*/ |
439 |
if (index >= globalindex) { |
|
2211
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|
440 |
fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); |
2191 | 441 |
return AL_FALSE; |
442 |
} |
|
443 |
alSourceStop(Sources[index]); |
|
444 |
if (AlGetError("ERROR %d: Stopping last sound\n") != AL_TRUE) |
|
445 |
return AL_FALSE; |
|
446 |
||
447 |
alGetError(); /* clear any AL errors beforehand */ |
|
448 |
||
449 |
return AL_TRUE; |
|
450 |
} |
|
451 |
||
452 |
#ifdef __CPLUSPLUS |
|
453 |
} |
|
454 |
#endif |