--- a/misc/openalbridge/openalbridge.c Wed Apr 21 01:57:23 2010 +0000
+++ b/misc/openalbridge/openalbridge.c Wed Apr 21 10:22:06 2010 +0000
@@ -1,20 +1,20 @@
/*
- * OpenAL Bridge - a simple portable library for OpenAL interface
- * Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; version 2 of the License
- *
- * This program 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 Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
+* OpenAL Bridge - a simple portable library for OpenAL interface
+* Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com>
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU Lesser General Public License as published by
+* the Free Software Foundation; version 2 of the License
+*
+* This program 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 Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+*/
#include "openalbridge.h"
#include "globals.h"
@@ -22,353 +22,341 @@
#include "alc.h"
#include "loaders.h"
-#ifdef __CPLUSPLUS
-extern "C" {
-#endif
-
- /*Sources are points emitting sound*/
- ALuint *Sources;
- /*Buffers hold sound data*/
- ALuint *Buffers;
- /*index for Sources and Buffers*/
- ALuint globalindex, globalsize, increment;
-
- ALboolean openalReady = AL_FALSE;
- ALfloat old_gain;
- ALboolean openal_init(ALboolean usehardware, int memorysize) {
- /*Initialize an OpenAL contex and allocate memory space for data and buffers*/
- ALCcontext *context;
- ALCdevice *device;
-
- prog = "OpenAL subsystem";
+/*Sources are points emitting sound*/
+ALuint *Sources;
+/*Buffers hold sound data*/
+ALuint *Buffers;
+/*index for Sources and Buffers*/
+ALuint globalindex, globalsize, increment;
+
+ALboolean openalReady = AL_FALSE;
+ALfloat old_gain;
- // set the memory dimentsion and the increment width when reallocating
- if (memorysize <= 0)
- globalsize = 50;
- else
- globalsize = memorysize;
- increment = globalsize;
-
- // reuse old context but keep the new value for increment
- if (openalReady == AL_TRUE) {
- err_msg("(%s) WARN - already initialized", prog);
- return AL_FALSE;
- }
-
- if (usehardware == AL_TRUE)
- device = alcOpenDevice(NULL);
- else
- device = alcOpenDevice("Generic Software");
-
- err_msg("(%s) INFO - Output device: %s", prog, alcGetString(device, ALC_DEVICE_SPECIFIER));
-
- if (device == NULL) {
- errno = ENODEV;
- err_ret("(%s) WARN - failed to open sound device", prog);
- return AL_FALSE;
- }
-
- context = alcCreateContext(device, NULL);
- alcMakeContextCurrent(context);
- alcProcessContext(context);
-
- if (AlGetError("(%s) WARN - Failed to create a new contex") != AL_TRUE)
- return AL_FALSE;
-
- // allocate memory space for buffers and sources
- Buffers = (ALuint*) Malloc(sizeof(ALuint)*globalsize);
- Sources = (ALuint*) Malloc(sizeof(ALuint)*globalsize);
-
- // set the listener gain, position (on xyz axes), velocity (one value for each axe) and orientation
- // Position, Velocity and Orientation of the listener
- ALfloat ListenerPos[] = {0.0, 0.0, 0.0};
- ALfloat ListenerVel[] = {0.0, 0.0, 0.0};
- ALfloat ListenerOri[] = {0.0, 0.0, -1.0, 0.0, 1.0, 0.0};
+int openal_init(int memorysize) {
+ /*Initialize an OpenAL contex and allocate memory space for data and buffers*/
+ ALCcontext *context;
+ ALCdevice *device;
- alListenerf (AL_GAIN, 1.0f );
- alListenerfv(AL_POSITION, ListenerPos);
- alListenerfv(AL_VELOCITY, ListenerVel);
- alListenerfv(AL_ORIENTATION, ListenerOri);
-
- if (AlGetError("(%s) WARN - Failed to set Listener properties") != AL_TRUE)
- return AL_FALSE;
-
- openalReady = AL_TRUE;
-
- alGetError(); // clear any AL errors beforehand
- return AL_TRUE;
+ // set the memory dimentsion and the increment width when reallocating
+ if (memorysize <= 0)
+ globalsize = 50;
+ else
+ globalsize = memorysize;
+ increment = globalsize;
+
+ // reuse old context but keep the new value for increment
+ if (openalReady == AL_TRUE) {
+ err_msg("(%s) WARN - already initialized", prog);
+ return 0;
}
- void openal_close (void) {
- /*Stop all sounds, deallocate all memory and close OpenAL */
- ALCcontext *context;
- ALCdevice *device;
-
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return;
+ // open hardware device if present
+ device = alcOpenDevice(NULL);
+
+ if (device == NULL) {
+ errno = ENODEV;
+ err_ret("(%s) WARN - failed to open sound device, using software renderer", prog);
+ device = alcOpenDevice("Generic Software");
+ if (device == NULL) {
+ err_ret("(%s) ERROR - failed to open sound software device, sound will be disabled", prog);
+ return -1;
}
-
- alSourceStopv (globalsize, Sources);
- alDeleteSources (globalsize, Sources);
- alDeleteBuffers (globalsize, Buffers);
-
- free(Sources);
- free(Buffers);
-
- context = alcGetCurrentContext();
- device = alcGetContextsDevice(context);
-
+ }
+
+ err_msg("(%s) INFO - Output device: %s", prog, alcGetString(device, ALC_DEVICE_SPECIFIER));
+
+ context = alcCreateContext(device, NULL);
+ alcMakeContextCurrent(context);
+ alcProcessContext(context);
+
+ if (AL_NO_ERROR != alGetError()) {
+ err_msg("(%s) ERROR - Failed to create a new contex",prog);
alcMakeContextCurrent(NULL);
alcDestroyContext(context);
alcCloseDevice(device);
-
- openalReady = AL_FALSE;
-
- err_msg("(%s) INFO - closed", prog);
-
- return;
- }
-
- ALboolean openal_ready(void) {
- return openalReady;
+ return -2;
}
-
-
- void helper_realloc (void) {
- /*expands allocated memory when loading more sound files than expected*/
- int oldsize = globalsize;
- globalsize += increment;
-
- err_msg("(%s) INFO - Realloc in process from %d to %d\n", prog, oldsize, globalsize);
-
- Buffers = (ALuint*) Realloc(Buffers, sizeof(ALuint)*globalsize);
- Sources = (ALuint*) Realloc(Sources, sizeof(ALuint)*globalsize);
-
+
+ // allocate memory space for buffers and sources
+ Buffers = (ALuint*) Malloc(sizeof(ALuint)*globalsize);
+ Sources = (ALuint*) Malloc(sizeof(ALuint)*globalsize);
+
+ // set the listener gain, position (on xyz axes), velocity (one value for each axe) and orientation
+ // Position, Velocity and Orientation of the listener
+ ALfloat ListenerPos[] = {0.0, 0.0, 0.0};
+ ALfloat ListenerVel[] = {0.0, 0.0, 0.0};
+ ALfloat ListenerOri[] = {0.0, 0.0, -1.0, 0.0, 1.0, 0.0};
+
+ alListenerf (AL_GAIN, 1.0f );
+ alListenerfv(AL_POSITION, ListenerPos);
+ alListenerfv(AL_VELOCITY, ListenerVel);
+ alListenerfv(AL_ORIENTATION, ListenerOri);
+
+ if (AL_NO_ERROR != alGetError()) {
+ err_msg("(%s) ERROR - Failed to set Listener properties",prog);
+ return -3;
+ }
+ openalReady = AL_TRUE;
+
+ alGetError(); // clear any AL errors beforehand
+ return AL_TRUE;
+}
+
+void openal_close (void) {
+ /*Stop all sounds, deallocate all memory and close OpenAL */
+ ALCcontext *context;
+ ALCdevice *device;
+
+ if (openalReady == AL_FALSE) {
+ errno = EPERM;
+ err_ret("(%s) WARN - OpenAL not initialized", prog);
return;
}
-
-
- int openal_loadfile (const char *filename){
- /*Open a file, load into memory and allocate the Source buffer for playing*/
- ALfloat SourcePos[] = { 0.0, 0.0, 0.0 }; /*Position of the source sound*/
- ALfloat SourceVel[] = { 0.0, 0.0, 0.0 }; /*Velocity of the source sound*/
- ALenum format;
- ALsizei bitsize, freq;
- char *data;
- uint32_t fileformat;
- ALenum error;
- FILE *fp;
-
- if (openalReady == AL_FALSE) {
- err_msg("(%s) WARN - not initialized", prog);
- return -1;
- }
-
- /*when the buffers are all used, we can expand memory to accept new files*/
- if (globalindex == globalsize)
- helper_realloc();
-
- /*detect the file format, as written in the first 4 bytes of the header*/
- fp = Fopen (filename, "rb");
-
- if (fp == NULL)
- return -2;
-
- error = fread (&fileformat, sizeof(uint32_t), 1, fp);
- fclose (fp);
-
- if (error < 0) {
- err_msg("(%s) ERROR - File %s is too short", prog, filename);
- return -3;
- }
-
- /*prepare the buffer to receive data*/
- alGenBuffers(1, &Buffers[globalindex]);
-
- if (AlGetError("(%s) ERROR - Failed to allocate memory for buffers") != AL_TRUE)
- return -4;
-
- /*prepare the source to emit sound*/
- alGenSources(1, &Sources[globalindex]);
-
- if (AlGetError("(%s) ERROR - Failed to allocate memory for sources") != AL_TRUE)
- return -5;
-
-
- switch (ENDIAN_BIG_32(fileformat)) {
- case OGG_FILE_FORMAT:
- error = load_oggvorbis (filename, &format, &data, &bitsize, &freq);
- break;
- case WAV_FILE_FORMAT:
- error = load_wavpcm (filename, &format, &data, &bitsize, &freq);
- break;
- default:
- err_msg ("(%s) ERROR - File format (%08X) not supported", prog, ENDIAN_BIG_32(fileformat));
- return -6;
- break;
- }
-
-
- /*copy pcm data in one buffer*/
- alBufferData(Buffers[globalindex], format, data, bitsize, freq);
- free(data); /*deallocate data to save memory*/
-
- if (AlGetError("(%s) ERROR - Failed to write data to buffers") != AL_TRUE)
+
+ alSourceStopv (globalsize, Sources);
+ alDeleteSources (globalsize, Sources);
+ alDeleteBuffers (globalsize, Buffers);
+
+ free(Sources);
+ free(Buffers);
+
+ context = alcGetCurrentContext();
+ device = alcGetContextsDevice(context);
+
+ alcMakeContextCurrent(NULL);
+ alcDestroyContext(context);
+ alcCloseDevice(device);
+
+ openalReady = AL_FALSE;
+
+ err_msg("(%s) INFO - closed", prog);
+
+ return;
+}
+
+ALboolean openal_ready(void) {
+ return openalReady;
+}
+
+
+void helper_realloc (void) {
+ /*expands allocated memory when loading more sound files than expected*/
+ int oldsize = globalsize;
+ globalsize += increment;
+
+ err_msg("(%s) INFO - Realloc in process from %d to %d\n", prog, oldsize, globalsize);
+
+ Buffers = (ALuint*) Realloc(Buffers, sizeof(ALuint)*globalsize);
+ Sources = (ALuint*) Realloc(Sources, sizeof(ALuint)*globalsize);
+
+ return;
+}
+
+
+int openal_loadfile (const char *filename){
+ /*Open a file, load into memory and allocate the Source buffer for playing*/
+ ALfloat SourcePos[] = { 0.0, 0.0, 0.0 }; /*Position of the source sound*/
+ ALfloat SourceVel[] = { 0.0, 0.0, 0.0 }; /*Velocity of the source sound*/
+ ALenum format;
+ ALsizei bitsize, freq;
+ char *data;
+ uint32_t fileformat;
+ ALenum error;
+ FILE *fp;
+
+ if (openalReady == AL_FALSE) {
+ err_msg("(%s) WARN - not initialized", prog);
+ return -1;
+ }
+
+ /*when the buffers are all used, we can expand memory to accept new files*/
+ if (globalindex == globalsize)
+ helper_realloc();
+
+ /*detect the file format, as written in the first 4 bytes of the header*/
+ fp = Fopen (filename, "rb");
+
+ if (fp == NULL)
+ return -2;
+
+ error = fread (&fileformat, sizeof(uint32_t), 1, fp);
+ fclose (fp);
+
+ if (error < 0) {
+ err_msg("(%s) ERROR - File %s is too short", prog, filename);
+ return -3;
+ }
+
+ /*prepare the buffer to receive data*/
+ alGenBuffers(1, &Buffers[globalindex]);
+
+ if (AL_NO_ERROR != alGetError()) {
+ err_msg("(%s) ERROR - Failed to allocate memory for buffers",prog);
+ return -4;
+ }
+
+ /*prepare the source to emit sound*/
+ alGenSources(1, &Sources[globalindex]);
+
+ if (AL_NO_ERROR != alGetError()) {
+ err_msg("(%s) ERROR - Failed to allocate memory for sources",prog);
+ return -5;
+ }
+
+ switch (ENDIAN_BIG_32(fileformat)) {
+ case OGG_FILE_FORMAT:
+ error = load_oggvorbis (filename, &format, &data, &bitsize, &freq);
+ break;
+ case WAV_FILE_FORMAT:
+ error = load_wavpcm (filename, &format, &data, &bitsize, &freq);
+ break;
+ default:
+ err_msg ("(%s) ERROR - File format (%08X) not supported", prog, ENDIAN_BIG_32(fileformat));
return -6;
-
- /*set source properties that it will use when it's in playback*/
- alSourcei (Sources[globalindex], AL_BUFFER, Buffers[globalindex] );
- alSourcef (Sources[globalindex], AL_PITCH, 1.0f );
- alSourcef (Sources[globalindex], AL_GAIN, 1.0f );
- alSourcefv(Sources[globalindex], AL_POSITION, SourcePos );
- alSourcefv(Sources[globalindex], AL_VELOCITY, SourceVel );
- alSourcei (Sources[globalindex], AL_LOOPING, 0 );
-
- if (AlGetError("(%s) ERROR - Failed to set Source properties") != AL_TRUE)
- return -7;
-
- alGetError(); /* clear any AL errors beforehand */
-
- /*returns the index of the source you just loaded, increments it and exits*/
- return globalindex++;
- }
-
-
- void openal_playsound (uint32_t index) {
- openal_playsound_loop (index, 0);
- }
-
-
- void openal_pausesound (uint32_t index) {
- if (openalReady == AL_TRUE && index < globalsize)
- alSourcePause(Sources[index]);
- }
-
-
- void openal_stopsound (uint32_t index) {
- openal_stopsound_free(index, 0);
- }
-
-
- void openal_freesound (uint32_t index){
- if (openalReady == AL_TRUE && index < globalsize)
- alSourceStop(Sources[index]);
- // STUB
+ break;
}
- void openal_playsound_loop (unsigned int index, char loops) {
- if (openalReady == AL_TRUE && index < globalsize) {
- alSourcePlay(Sources[index]);
- if (loops != 0)
- openal_toggleloop(index);
- }
+ //copy pcm data in one buffer and free it
+ alBufferData(Buffers[globalindex], format, data, bitsize, freq);
+ free(data);
+
+ if (AL_NO_ERROR != alGetError()) {
+ err_msg("(%s) ERROR - Failed to write data to buffers",prog);
+ return -6;
}
- void openal_stopsound_free (unsigned int index, char freesource) {
- if (openalReady == AL_TRUE && index < globalsize) {
- alSourceStop(Sources[index]);
- if (freesource != 0)
- openal_freesound(index);
- }
+ /*set source properties that it will use when it's in playback*/
+ alSourcei (Sources[globalindex], AL_BUFFER, Buffers[globalindex] );
+ alSourcef (Sources[globalindex], AL_PITCH, 1.0f );
+ alSourcef (Sources[globalindex], AL_GAIN, 1.0f );
+ alSourcefv(Sources[globalindex], AL_POSITION, SourcePos );
+ alSourcefv(Sources[globalindex], AL_VELOCITY, SourceVel );
+ alSourcei (Sources[globalindex], AL_LOOPING, 0 );
+
+ if (AL_NO_ERROR != alGetError()) {
+ err_msg("(%s) ERROR - Failed to set Source properties",prog);
+ return -7;
}
- void openal_toggleloop (uint32_t index) {
- ALint loop;
-
- if (openalReady == AL_TRUE && index < globalsize) {
- alGetSourcei (Sources[index], AL_LOOPING, &loop);
- alSourcei (Sources[index], AL_LOOPING, !((uint8_t) loop) & 0x00000001);
- }
+ alGetError(); /* clear any AL errors beforehand */
+
+ /*returns the index of the source you just loaded, increments it and exits*/
+ return globalindex++;
+}
+
+
+void openal_playsound (uint32_t index) {
+ openal_playsound_loop (index, 0);
+}
+
+
+void openal_pausesound (uint32_t index) {
+ if (openalReady == AL_TRUE && index < globalsize)
+ alSourcePause(Sources[index]);
+}
+
+void openal_stopsound (uint32_t index) {
+ openal_stopsound_free(index, 0);
+}
+
+
+void openal_freesound (uint32_t index){
+ if (openalReady == AL_TRUE && index < globalsize)
+ alSourceStop(Sources[index]);
+ // STUB
+}
+
+
+void openal_playsound_loop (unsigned int index, char loops) {
+if (openalReady == AL_TRUE && index < globalsize) {
+ alSourcePlay(Sources[index]);
+ if (loops != 0)
+ openal_toggleloop(index);
}
-
+}
- void openal_setvolume (uint32_t index, float gain) {
- if (openalReady == AL_TRUE && index < globalsize)
- alSourcef (Sources[index], AL_GAIN, gain);
- }
-
-
- void openal_setglobalvolume (float gain) {
- if (openalReady == AL_TRUE)
- alListenerf (AL_GAIN, gain);
+void openal_stopsound_free (unsigned int index, char freesource) {
+ if (openalReady == AL_TRUE && index < globalsize) {
+ alSourceStop(Sources[index]);
+ if (freesource != 0)
+ openal_freesound(index);
}
-
- void openal_togglemute () {
- ALfloat gain;
+}
+
+void openal_toggleloop (uint32_t index) {
+ ALint loop;
+
+ if (openalReady == AL_TRUE && index < globalsize) {
+ alGetSourcei (Sources[index], AL_LOOPING, &loop);
+ alSourcei (Sources[index], AL_LOOPING, !((uint8_t) loop) & 0x00000001);
+ }
+
+}
+
+
+void openal_setvolume (uint32_t index, float gain) {
+ if (openalReady == AL_TRUE && index < globalsize)
+ alSourcef (Sources[index], AL_GAIN, gain);
+}
+
- if (openalReady == AL_TRUE) {
- alGetListenerf (AL_GAIN, &gain);
- if (gain > 0) {
- old_gain = gain;
- gain = 0;
- } else
- gain = old_gain;
-
- alListenerf (AL_GAIN, gain);
- }
- }
-
-
- void openal_fade (uint32_t index, uint16_t quantity, char direction) {
- /*Fade in or out by calling a helper thread*/
+void openal_setglobalvolume (float gain) {
+ if (openalReady == AL_TRUE)
+ alListenerf (AL_GAIN, gain);
+}
+
+void openal_togglemute () {
+ ALfloat gain;
+
+ if (openalReady == AL_TRUE) {
+ alGetListenerf (AL_GAIN, &gain);
+ if (gain > 0) {
+ old_gain = gain;
+ gain = 0;
+ } else
+ gain = old_gain;
+
+ alListenerf (AL_GAIN, gain);
+}
+}
+
+// Fade in or out by calling a helper thread
+void openal_fade (uint32_t index, uint16_t quantity, al_fade_t direction) {
#ifndef _WIN32
- pthread_t thread;
+ pthread_t thread;
#else
- HANDLE Thread;
- DWORD threadID;
+ HANDLE Thread;
#endif
- fade_t *fade;
-
- if (openalReady == AL_TRUE && index < globalsize) {
-
- fade = (fade_t*) Malloc(sizeof(fade_t));
- fade->index = index;
- fade->quantity = quantity;
-
- if (direction > 0) {
+ fade_t *fade;
+
+ if (openalReady == AL_TRUE && index < globalsize) {
+ fade = (fade_t*) Malloc(sizeof(fade_t));
+ fade->index = index;
+ fade->quantity = quantity;
+ fade->type = direction;
+
#ifndef _WIN32
- pthread_create(&thread, NULL, helper_fadein, (void*) fade);
+ pthread_create(&thread, NULL, (void *)helper_fade, (void *)fade);
+ pthread_detach(thread);
#else
- Thread = _beginthread(&helper_fadein, 0, (void*) fade);
-#endif
- } else {
-#ifndef _WIN32
- pthread_create(&thread, NULL, helper_fadeout, (void*) fade);
-#else
- Thread = _beginthread(&helper_fadeout, 0, (void*) fade);
-#endif
- }
-
-#ifndef _WIN32
- pthread_detach(thread);
+ Thread = (HANDLE) _beginthread((void *)helper_fade, 0, (void *)fade);
#endif
- }
}
-
-
- void openal_fadeout (uint32_t index, uint16_t quantity) {
- openal_fade(index, quantity, AL_FADE_OUT);
- }
-
-
- void openal_fadein (uint32_t index, uint16_t quantity) {
- openal_fade(index, quantity, AL_FADE_IN);
- }
-
-
- void openal_setposition (uint32_t index, float x, float y, float z) {
- if (openalReady == AL_TRUE && index < globalsize)
- alSource3f(Sources[index], AL_POSITION, x, y, z);;
- }
-
-
+}
+
+void openal_fadein (uint32_t index, uint16_t quantity) {
+ openal_fade(index, quantity, AL_FADE_IN);
+}
-
-#ifdef __CPLUSPLUS
+void openal_fadeout (uint32_t index, uint16_t quantity) {
+ openal_fade(index, quantity, AL_FADE_OUT);
}
-#endif
+
+
+void openal_setposition (uint32_t index, float x, float y, float z) {
+ if (openalReady == AL_TRUE && index < globalsize)
+ alSource3f(Sources[index], AL_POSITION, x, y, z);;
+}