| author | koda |
| Mon, 29 Jun 2009 03:47:39 +0000 | |
| changeset 2210 | 1cb7118a77dd |
| parent 2200 | 8192be6e3aef |
| child 2211 | 288360b78f30 |
| 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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#include "wrappers.h" |
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#ifdef __CPLUSPLUS |
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extern "C" {
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#endif |
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extern ALint *Sources; |
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void *Malloc (size_t nbytes){
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void *aptr; |
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koda/Smaxx changes to openal for crossplatform building
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if ( (aptr = malloc(nbytes)) == NULL) {
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fprintf(stderr, "ERROR: not enough memory! malloc() failed"); |
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exit(-1); |
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koda/Smaxx changes to openal for crossplatform building
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} |
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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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if ((fp=fopen(fname,mode)) == NULL) |
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fprintf (stderr, "ERROR: can't open file %s in mode '%s'", fname, mode); |
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return fp; |
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} |
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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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fprintf(stderr, str, error); |
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return -2; |
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} else |
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return AL_TRUE; |
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} |
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#ifndef _WIN32 |
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void *helper_fadein(void *tmp) |
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#else |
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void WINAPI helper_fadein(void *tmp) |
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#endif |
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{
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ALfloat gain; |
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ALfloat target_gain; |
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fade_t *fade; |
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int index; |
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unsigned int 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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fprintf(stderr, "Fade-out: index %d quantity %d\n", 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 DEBUG |
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fprintf(stderr, "Fade-in: Set gain to: %f\n", 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("ERROR %d: Setting fade in volume\n");
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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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} |
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#ifndef _WIN32 |
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void *helper_fadeout(void *tmp) |
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#else |
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void WINAPI helper_fadeout(void *tmp) |
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#endif |
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{
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ALfloat gain; |
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ALfloat old_gain; |
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fade_t *fade; |
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int index; |
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unsigned int 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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fprintf(stderr, "Fade-out: index %d quantity %d\n", 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 DEBUG |
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fprintf(stderr, "Fade-out: Set gain to %f\n", 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("ERROR %d: Setting fade out volume\n");
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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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} |
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#ifdef __CPLUSPLUS |
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} |
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#endif |