oops. shotgun reload
/*
* OpenAL Bridge - a simple portable library for OpenAL interface
* Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com>,
* Mario Liebisch <mario.liebisch+hw@googlemail.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 "ssound.h"
#include "loaders.h"
extern ALuint sources[MAX_SOURCES];
extern const ALfloat NV[3];
extern const ALfloat LO[6];
extern char *prog;
char SSound_load (SSound_t* pSound, const char* cFilename) {
uint32_t magic;
ALenum format;
ALsizei bitsize, freq;
char *data;
FILE* fp;
snprintf(pSound->Filename, 256, "%s", cFilename);
pSound->source = -1;
alGenBuffers(1, &pSound->Buffer);
if(alGetError() != AL_NO_ERROR) {
fprintf(stderr, "CSound: Couldn't create buffer.\n");
return 0;
}
fp = fopen(pSound->Filename, "rb");
if(!fp) {
fprintf(stderr, "CSound: Couldn't open file for reading.\n");
return 0;
}
if(fread(&magic, sizeof(uint32_t), 1, fp) < 1)
{
fclose(fp);
fprintf(stderr, "CSound: Couldn't read file header.\n");
return 0;
}
fclose(fp);
switch (ENDIAN_BIG_32(magic)) {
case OGG_FILE_FORMAT:
load_oggvorbis (pSound->Filename, &format, &data, &bitsize, &freq);
break;
case WAV_FILE_FORMAT:
load_wavpcm (pSound->Filename, &format, &data, &bitsize, &freq);
break;
default:
errno = EINVAL;
err_ret ("(%s) ERROR - File format (%08X) not supported", prog, ENDIAN_BIG_32(magic));
return 0;
break;
}
alBufferData(pSound->Buffer, format, data, bitsize, freq);
if(alGetError() != AL_NO_ERROR)
{
fprintf(stderr, "CSound: Couldn't write buffer data.\n");
return 0;
}
free(data);
return 1;
}
void SSound_close(SSound_t* pSound)
{
SSound_stop(pSound);
alDeleteBuffers(1, &pSound->Buffer);
return;
}
void SSound_play(SSound_t* pSound, const char bLoop) {
int i;
if(pSound->source == -1) // need a new source
{
int i;
for(i = 0; i < MAX_SOURCES; i++)
{
ALint state;
alGetSourcei(sources[i], AL_SOURCE_STATE, &state);
if(state != AL_PLAYING && state != AL_PAUSED)
{
#ifdef DEBUG
printf("using source %d (state 0x%x) for buffer.\n", i, state);
#endif
alSourceStop(sources[pSound->source]);
alGetError();
break;
}
}
if(i == MAX_SOURCES) // no available source found; skip
{
#ifdef DEBUG
printf("no source to play buffer %d!\n", i);
#endif
return;
}
pSound->source = i;
}
else // reuse already playing source
{
alSourceStop(sources[pSound->source]);
}
alSourcei (sources[pSound->source], AL_BUFFER, pSound->Buffer);
alSourcef (sources[pSound->source], AL_PITCH, 1.0f);
alSourcef (sources[pSound->source], AL_GAIN, 1.0f);
alSourcefv(sources[pSound->source], AL_POSITION, NV );
alSourcefv(sources[pSound->source], AL_VELOCITY, NV );
alSourcei (sources[pSound->source], AL_LOOPING, bLoop );
alSourcePlay(sources[pSound->source]);
if((i = alGetError()) != AL_NO_ERROR)
{
fprintf(stderr, "CSound: SourcePlay error 0x%4x in source %d\n", i, pSound->source);
}
#ifdef DEBUG
fprintf(stderr, "play %s%s [%d]\n", pSound->Filename, bLoop ? " forever" : " once", pSound->source);
#endif
usleep(0);
return;
}
void SSound_pause(const SSound_t* pSound) {
if(pSound->source == -1) // not playing
return;
alSourcePause(sources[pSound->source]);
#ifdef DEBUG
fprintf(stderr, "pause %s\n", pSound->Filename);
#endif
return;
}
void SSound_continue(const SSound_t* pSound) {
if(pSound->source == -1) // not playing
return;
alSourcePlay(sources[pSound->source]);
#ifdef DEBUG
fprintf(stderr, "pause %s\n", pSound->Filename);
#endif
return;
}
void SSound_stop(SSound_t* pSound) {
if(pSound->source == -1) // not playing
return;
alSourceStop(sources[pSound->source]);
pSound->source = -1;
#ifdef DEBUG
fprintf(stderr, "stop %s\n", pSound->Filename);
#endif
return;
}
void SSound_volume(const SSound_t* pSound, const float fPercentage) {
if(pSound->source == -1) // not playing
return;
alSourcef(sources[pSound->source], AL_GAIN, fPercentage);
return;
}