diff -r b07e87f6430f -r 0ddf641fddee openalbridge/openalwrap.c --- a/openalbridge/openalwrap.c Tue Aug 18 09:59:19 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,461 +0,0 @@ -/* - * OpenAL Bridge - a simple portable library for OpenAL interface - * Copyright (c) 2009 Vittorio Giovara - * - * 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 "openalwrap.h" -#include "wrappers.h" -#include "alc.h" -#include "loaders.h" -#include "endianness.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; - - ALboolean openal_close (void) { - /*Stop all sounds, deallocate all memory and close OpenAL */ - ALCcontext *context; - ALCdevice *device; - - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - 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; - - return AL_TRUE; - } - - ALboolean openal_ready(void) { - return openalReady; - } - - ALboolean openal_init(uint32_t memorysize) { - /*Initialize an OpenAL contex and allocate memory space for data and buffers*/ - ALCcontext *context; - ALCdevice *device; - const ALCchar *default_device; - - /*Position of the listener*/ - ALfloat ListenerPos[] = { 0.0, 0.0, 0.0 }; - /*Velocity of the listener*/ - ALfloat ListenerVel[] = { 0.0, 0.0, 0.0 }; - /*Orientation of the listener. (first 3 elements are "at", second 3 are "up")*/ - ALfloat ListenerOri[] = { 0.0, 0.0, -1.0, 0.0, 1.0, 0.0 }; - - if(openalReady == AL_TRUE) { - fprintf(stderr, "ERROR: OpenAL already initialized\n"); - return AL_FALSE; - } - - default_device = alcGetString(NULL, ALC_DEFAULT_DEVICE_SPECIFIER); - fprintf(stderr, "Using default device: %s\n", default_device); - - if ((device = alcOpenDevice(default_device)) == NULL) { - fprintf(stderr, "ERROR: Failed to open sound device\n"); - return AL_FALSE; - } - - context = alcCreateContext(device, NULL); - alcMakeContextCurrent(context); - alcProcessContext(context); - - if (AlGetError("ERROR %d: Creating a new contex\n") != AL_TRUE) - return AL_FALSE; - - /*allocate memory space for buffers and sources*/ - globalsize = memorysize; - increment = memorysize; - 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*/ - alListenerf (AL_GAIN, 1.0f ); - alListenerfv(AL_POSITION, ListenerPos); - alListenerfv(AL_VELOCITY, ListenerVel); - alListenerfv(AL_ORIENTATION, ListenerOri); - - if (AlGetError("ERROR %d: Setting Listener properties\n") != AL_TRUE) - return AL_FALSE; - - openalReady = AL_TRUE; - - alGetError(); /* clear any AL errors beforehand */ - return AL_TRUE; - } - - - ALboolean helper_realloc (void) { - /*expands allocated memory when loading more sound files than expected*/ - int oldsize = globalsize; - globalsize += increment; - -#ifdef DEBUG - fprintf(stderr, "OpenAL: Realloc in process from %d to %d\n", oldsize, globalsize); -#endif - - Buffers = (ALuint*) Realloc(Buffers, sizeof(ALuint)*globalsize); - Sources = (ALuint*) Realloc(Sources, sizeof(ALuint)*globalsize); - - return AL_TRUE; - } - - - ALint 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) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - /*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 -1; - error = fread (&fileformat, sizeof(uint32_t), 1, fp); - fclose (fp); - - if (error < 0) { - fprintf(stderr, "ERROR: file %s is too short \n", filename); - return -2; - } - - /*prepare the buffer to receive data*/ - alGenBuffers(1, &Buffers[globalindex]); - - if (AlGetError("ERROR %d: Allocating memory for buffers\n") != AL_TRUE) - return -3; - - /*prepare the source to emit sound*/ - alGenSources(1, &Sources[globalindex]); - - if (AlGetError("ERROR %d: Allocating memory for sources\n") != AL_TRUE) - return -4; - - - if (fileformat == 0x5367674F) /*check if ogg*/ - error = load_oggvorbis (filename, &format, &data, &bitsize, &freq); - else { - if (fileformat == 0x46464952) /*check if wav*/ - error = load_wavpcm (filename, &format, &data, &bitsize, &freq); - else { - fprintf(stderr, "ERROR: File format (%08X) not supported!\n", invert_endianness(fileformat)); - return -5; - } - } - - /*copy pcm data in one buffer*/ - alBufferData(Buffers[globalindex], format, data, bitsize, freq); - free(data); /*deallocate data to save memory*/ - - if (AlGetError("ERROR %d: Writing data to buffer\n") != AL_TRUE) - 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("ERROR %d: Setting source properties\n") != 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++; - } - - - ALboolean openal_toggleloop (uint32_t index){ - /*Set or unset looping mode*/ - ALint loop; - - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - if (index >= globalsize) { - fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); - return AL_FALSE; - } - - alGetSourcei (Sources[index], AL_LOOPING, &loop); - alSourcei (Sources[index], AL_LOOPING, !((uint8_t) loop) & 0x00000001); - if (AlGetError("ERROR %d: Getting or setting loop property\n") != AL_TRUE) - return AL_FALSE; - - alGetError(); /* clear any AL errors beforehand */ - - return AL_TRUE; - } - - - ALboolean openal_setvolume (uint32_t index, uint8_t percentage) { - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - /*Set volume for sound number index*/ - if (index >= globalindex) { - fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); - return AL_FALSE; - } - - if (percentage > 100) - percentage = 100; - alSourcef (Sources[index], AL_GAIN, (float) percentage/100.0f); - if (AlGetError2("ERROR %d: setting volume for sound %d\n", index) != AL_TRUE) - return AL_FALSE; - - alGetError(); /* clear any AL errors beforehand */ - - return AL_TRUE; - } - - - ALboolean openal_setglobalvolume (uint8_t percentage) { - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - /*Set volume for all sounds*/ - if (percentage > 100) - percentage = 100; - alListenerf (AL_GAIN, (float) percentage/100.0f); - if (AlGetError("ERROR %d: Setting global volume\n") != AL_TRUE) - return AL_FALSE; - - alGetError(); /* clear any AL errors beforehand */ - - return AL_TRUE; - } - - - ALboolean openal_togglemute () { - /*Mute or unmute sound*/ - ALfloat mute; - - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - alGetListenerf (AL_GAIN, &mute); - if (mute > 0) - mute = 0; - else - mute = 1.0; - alListenerf (AL_GAIN, mute); - if (AlGetError("ERROR %d: Setting mute property\n") != AL_TRUE) - return AL_FALSE; - - alGetError(); /* clear any AL errors beforehand */ - - return AL_TRUE; - } - - - ALboolean openal_fade (uint32_t index, uint16_t quantity, ALboolean direction) { - /*Fade in or out by calling a helper thread*/ -#ifndef _WIN32 - pthread_t thread; -#else - HANDLE Thread; - DWORD threadID; -#endif - fade_t *fade; - - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - fade = (fade_t*) Malloc(sizeof(fade_t)); - fade->index = index; - fade->quantity = quantity; - - if (index >= globalindex) { - fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); - return AL_FALSE; - } - - if (direction == FADE_IN) -#ifndef _WIN32 - pthread_create(&thread, NULL, helper_fadein, (void*) fade); -#else - Thread = _beginthread(&helper_fadein, 0, (void*) fade); -#endif - else { - if (direction == FADE_OUT) -#ifndef _WIN32 - pthread_create(&thread, NULL, helper_fadeout, (void*) fade); -#else - Thread = _beginthread(&helper_fadeout, 0, (void*) fade); -#endif - else { - fprintf(stderr, "ERROR: unknown direction for fade (%d)\n", direction); - free(fade); - return AL_FALSE; - } - } - -#ifndef _WIN32 - pthread_detach(thread); -#endif - - alGetError(); /* clear any AL errors beforehand */ - - return AL_TRUE; - } - - - ALboolean openal_fadeout (uint32_t index, uint16_t quantity) { - /*wrapper for fadeout*/ - return openal_fade(index, quantity, FADE_OUT); - } - - - ALboolean openal_fadein (uint32_t index, uint16_t quantity) { - /*wrapper for fadein*/ - return openal_fade(index, quantity, FADE_IN); - } - - - ALboolean openal_setposition (uint32_t index, float x, float y, float z) { - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - if (index >= globalindex) { - fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); - return AL_FALSE; - } - - alSource3f(Sources[index], AL_POSITION, x, y, z); - if (AlGetError2("ERROR %d: setting position for sound %d\n", index) != AL_TRUE) - return AL_FALSE; - - return AL_TRUE; - } - - - ALboolean openal_playsound (uint32_t index){ - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - /*Play sound number index*/ - if (index >= globalindex) { - fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); - return AL_FALSE; - } - alSourcePlay(Sources[index]); - if (AlGetError2("ERROR %d: Playing sound %d\n", index) != AL_TRUE) - return AL_FALSE; - - alGetError(); /* clear any AL errors beforehand */ - - return AL_TRUE; - } - - - ALboolean openal_pausesound(uint32_t index){ - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - /*Pause sound number index*/ - if (index >= globalindex) { - fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); - return AL_FALSE; - } - alSourcePause(Sources[index]); - if (AlGetError2("ERROR %d: Pausing sound %d\n", index) != AL_TRUE) - return AL_FALSE; - - return AL_TRUE; - } - - - ALboolean openal_stopsound(uint32_t index){ - if(openalReady == AL_FALSE) { - fprintf(stderr, "ERROR: OpenAL not initialized\n"); - return AL_FALSE; - } - - /*Stop sound number index*/ - if (index >= globalindex) { - fprintf(stderr, "ERROR: index out of bounds (got %d, max %d)\n", index, globalindex); - return AL_FALSE; - } - alSourceStop(Sources[index]); - if (AlGetError2("ERROR %d: Stopping sound %d\n", index) != AL_TRUE) - return AL_FALSE; - - alGetError(); /* clear any AL errors beforehand */ - - return AL_TRUE; - } - -#ifdef __CPLUSPLUS -} -#endif