openalbridge/wrappers.c
author koda
Sat, 17 Oct 2009 01:28:49 +0000
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child 2529 51e5df1c8462
permissions -rw-r--r--
revert audio to use SDL_mixer -- also frontend uses it, so it needs sdlmixer sources the button for voicepack preview is broken for unknown reasons
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/*
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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 Lesser 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 Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser 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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#include "wrappers.h"
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extern char *prog;
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extern ALint Sources[MAX_SOURCES];
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void *Malloc (size_t nbytes) {
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        void *aptr;
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        if ((aptr = malloc(nbytes)) == NULL)
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                err_dump("(%s) FATAL - not enough memory");
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        return aptr;
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}
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void *Realloc (void *aptr, size_t nbytes) {
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        aptr = realloc(aptr, nbytes);
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        if (aptr == NULL) 
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                err_dump("(%s) FATAL - not enough memory");
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        return aptr;
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}
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FILE *Fopen (const char *fname, char *mode)	{
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        FILE *fp;
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        fp = fopen(fname,mode);
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        if (fp == NULL)
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                err_ret("(%s) ERROR - can't open file %s in mode '%s'", prog, fname, mode);
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        return fp;
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}
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/*TODO make a proper error reporting routine*/
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ALint AlGetError (const char *str) {
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        ALenum error;
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        error = alGetError();
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        if (error != AL_NO_ERROR) {
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                err_msg(str, prog);
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                return error;
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        } else 
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                return AL_TRUE;
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}
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ALint AlGetError2 (const char *str, int num) {
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        ALenum error;
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        error = alGetError();
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        if (error != AL_NO_ERROR) {
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                err_msg(str, prog, num);
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                return error;
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        } else 
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                return AL_TRUE;
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}
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       void *helper_fadein(void *tmp) {
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                ALfloat gain;
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                ALfloat target_gain;
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                fade_t *fade;
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                uint32_t index; 
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                uint16_t quantity; 
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                fade = tmp;
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                index = fade->index;
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                quantity = fade->quantity;
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                free (fade);
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#ifdef DEBUG
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                err_msg("(%s) INFO - Fade-in in progress [index %d quantity %d]", prog, index, quantity);
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#endif
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                /*save the volume desired after the fade*/
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                alGetSourcef(Sources[index], AL_GAIN, &target_gain);
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                if (target_gain > 1.0f || target_gain < 0.0f)
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                        target_gain = 1.0f;
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                alSourcePlay(Sources[index]);
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                for (gain = 0.0f ; gain <= target_gain; gain += (float) quantity/10000) {
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#ifdef TRACE
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                        err_msg("(%s) DEBUG - Fade-in set gain to %f", gain);
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#endif
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                        alSourcef(Sources[index], AL_GAIN, gain);
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                        usleep(10000);
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                }
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                AlGetError("(%s) WARN - Failed to set fade-in volume level");
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#ifndef _WIN32
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                pthread_exit(NULL);
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#else
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                _endthread();
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#endif
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                return 0;
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        }
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        void *helper_fadeout(void *tmp) {
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                ALfloat gain;
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                ALfloat old_gain;
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                fade_t *fade;
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                uint32_t index; 
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                uint16_t quantity; 
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                fade = tmp;
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                index = fade->index;
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                quantity = fade->quantity;
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                free(fade);
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#ifdef DEBUG
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                err_msg("(%s) INFO - Fade-out in progress [index %d quantity %d]", prog, index, quantity);
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#endif
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                alGetSourcef(Sources[index], AL_GAIN, &old_gain);
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                for (gain = old_gain; gain >= 0.00f; gain -= (float) quantity/10000) {
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#ifdef TRACE
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                        err_msg("(%s) DEBUG - Fade-out set gain to %f", gain);
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#endif
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                        alSourcef(Sources[index], AL_GAIN, gain);
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                        usleep(10000);
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                }
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                AlGetError("(%s) WARN - Failed to set fade-out volume level");
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                /*stop that sound and reset its volume*/
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                alSourceStop (Sources[index]);
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                alSourcef (Sources[index], AL_GAIN, old_gain);	
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#ifndef _WIN32
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                pthread_exit(NULL);
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#else
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                _endthread();
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#endif
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                return 0;
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        }
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