250 lines
6.2 KiB
C
250 lines
6.2 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#ifdef USE_OPENAL
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# undef AL_API
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# undef ALC_API
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# define AL_LIBTYPE_STATIC
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# define ALC_LIBTYPE_STATIC
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# include <AL/al.h>
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# include <AL/alc.h>
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# include <AL/alext.h>
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#endif
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#include "../86box.h"
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#include "../ibm.h"
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#include "sound.h"
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#define FREQ 48000
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#define BUFLEN SOUNDBUFLEN
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#ifdef USE_OPENAL
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ALuint buffers[4]; /* front and back buffers */
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ALuint buffers_cd[4]; /* front and back buffers */
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ALuint buffers_midi[4]; /* front and back buffers */
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static ALuint source[3]; /* audio source */
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#endif
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static int midi_freq = 44100;
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static int midi_buf_size = 4410;
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static int initialized = 0;
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void al_set_midi(int freq, int buf_size)
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{
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midi_freq = freq;
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midi_buf_size = buf_size;
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}
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#ifdef USE_OPENAL
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void closeal(void);
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ALvoid alutInit(ALint *argc,ALbyte **argv)
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{
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ALCcontext *Context;
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ALCdevice *Device;
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/* Open device */
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Device = alcOpenDevice((ALCchar *)"");
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if (Device != NULL) {
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/* Create context(s) */
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Context = alcCreateContext(Device, NULL);
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if (Context != NULL) {
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/* Set active context */
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alcMakeContextCurrent(Context);
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}
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}
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}
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ALvoid alutExit(ALvoid)
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{
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ALCcontext *Context;
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ALCdevice *Device;
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/* Get active context */
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Context = alcGetCurrentContext();
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if (Context != NULL) {
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/* Get device for active context */
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Device = alcGetContextsDevice(Context);
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if (Device != NULL) {
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/* Disable context */
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alcMakeContextCurrent(NULL);
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/* Close device */
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alcCloseDevice(Device);
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}
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/* Release context(s) */
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alcDestroyContext(Context);
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}
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}
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#endif
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void closeal(void)
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{
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#ifdef USE_OPENAL
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alutExit();
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#endif
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}
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void initalmain(int argc, char *argv[])
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{
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if (!initialized) return;
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#ifdef USE_OPENAL
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alutInit(0,0);
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atexit(closeal);
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#endif
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initialized = 0;
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}
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void inital(ALvoid)
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{
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if (initialized) return;
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#ifdef USE_OPENAL
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int c;
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float *buf = NULL, *cd_buf = NULL, *midi_buf = NULL;
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int16_t *buf_int16 = NULL, *cd_buf_int16 = NULL, *midi_buf_int16 = NULL;
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if (sound_is_float)
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{
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buf = (float *) malloc((BUFLEN << 1) * sizeof(float));
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cd_buf = (float *) malloc((CD_BUFLEN << 1) * sizeof(float));
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midi_buf = (float *) malloc(midi_buf_size * sizeof(float));
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}
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else
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{
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buf_int16 = (int16_t *) malloc((BUFLEN << 1) * sizeof(int16_t));
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cd_buf_int16 = (int16_t *) malloc((CD_BUFLEN << 1) * sizeof(int16_t));
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midi_buf_int16 = (int16_t *) malloc(midi_buf_size * sizeof(int16_t));
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}
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alGenBuffers(4, buffers);
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alGenBuffers(4, buffers_cd);
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alGenBuffers(4, buffers_midi);
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alGenSources(3, source);
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alSource3f(source[0], AL_POSITION, 0.0, 0.0, 0.0);
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alSource3f(source[0], AL_VELOCITY, 0.0, 0.0, 0.0);
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alSource3f(source[0], AL_DIRECTION, 0.0, 0.0, 0.0);
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alSourcef (source[0], AL_ROLLOFF_FACTOR, 0.0 );
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alSourcei (source[0], AL_SOURCE_RELATIVE, AL_TRUE );
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alSource3f(source[1], AL_POSITION, 0.0, 0.0, 0.0);
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alSource3f(source[1], AL_VELOCITY, 0.0, 0.0, 0.0);
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alSource3f(source[1], AL_DIRECTION, 0.0, 0.0, 0.0);
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alSourcef (source[1], AL_ROLLOFF_FACTOR, 0.0 );
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alSourcei (source[1], AL_SOURCE_RELATIVE, AL_TRUE );
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alSource3f(source[2], AL_POSITION, 0.0, 0.0, 0.0);
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alSource3f(source[2], AL_VELOCITY, 0.0, 0.0, 0.0);
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alSource3f(source[2], AL_DIRECTION, 0.0, 0.0, 0.0);
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alSourcef (source[2], AL_ROLLOFF_FACTOR, 0.0 );
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alSourcei (source[2], AL_SOURCE_RELATIVE, AL_TRUE );
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if (sound_is_float)
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{
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memset(buf,0,BUFLEN*2*sizeof(float));
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memset(cd_buf,0,BUFLEN*2*sizeof(float));
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memset(midi_buf,0,midi_buf_size*sizeof(float));
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}
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else
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{
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memset(buf_int16,0,BUFLEN*2*sizeof(int16_t));
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memset(cd_buf_int16,0,BUFLEN*2*sizeof(int16_t));
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memset(midi_buf_int16,0,midi_buf_size*sizeof(int16_t));
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}
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for (c = 0; c < 4; c++)
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{
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if (sound_is_float)
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{
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alBufferData(buffers[c], AL_FORMAT_STEREO_FLOAT32, buf, BUFLEN*2*sizeof(float), FREQ);
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alBufferData(buffers_cd[c], AL_FORMAT_STEREO_FLOAT32, cd_buf, CD_BUFLEN*2*sizeof(float), CD_FREQ);
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alBufferData(buffers_midi[c], AL_FORMAT_STEREO_FLOAT32, midi_buf, midi_buf_size*sizeof(float), midi_freq);
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}
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else
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{
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alBufferData(buffers[c], AL_FORMAT_STEREO16, buf_int16, BUFLEN*2*sizeof(int16_t), FREQ);
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alBufferData(buffers_cd[c], AL_FORMAT_STEREO16, cd_buf_int16, CD_BUFLEN*2*sizeof(int16_t), CD_FREQ);
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alBufferData(buffers_midi[c], AL_FORMAT_STEREO16, midi_buf_int16, midi_buf_size*sizeof(int16_t), midi_freq);
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}
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}
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alSourceQueueBuffers(source[0], 4, buffers);
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alSourceQueueBuffers(source[1], 4, buffers_cd);
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alSourceQueueBuffers(source[2], 4, buffers_midi);
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alSourcePlay(source[0]);
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alSourcePlay(source[1]);
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alSourcePlay(source[2]);
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if (sound_is_float)
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{
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free(midi_buf);
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free(cd_buf);
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free(buf);
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}
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else
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{
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free(midi_buf_int16);
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free(cd_buf_int16);
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free(buf_int16);
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}
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initialized = 1;
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#endif
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}
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void givealbuffer_common(void *buf, uint8_t src, int size, int freq)
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{
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#ifdef USE_OPENAL
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int processed;
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int state;
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ALuint buffer;
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alGetSourcei(source[src], AL_SOURCE_STATE, &state);
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if (state==0x1014)
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{
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alSourcePlay(source[src]);
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}
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alGetSourcei(source[src], AL_BUFFERS_PROCESSED, &processed);
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if (processed>=1)
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{
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alSourceUnqueueBuffers(source[src], 1, &buffer);
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if (sound_is_float)
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{
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alBufferData(buffer, AL_FORMAT_STEREO_FLOAT32, buf, size * sizeof(float), freq);
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}
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else
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{
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alBufferData(buffer, AL_FORMAT_STEREO16, buf, size * sizeof(int16_t), freq);
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}
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alSourceQueueBuffers(source[src], 1, &buffer);
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}
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#endif
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}
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void givealbuffer(void *buf)
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{
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givealbuffer_common(buf, 0, BUFLEN << 1, FREQ);
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}
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void givealbuffer_cd(void *buf)
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{
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givealbuffer_common(buf, 1, CD_BUFLEN << 1, CD_FREQ);
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}
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void givealbuffer_midi(void *buf, uint32_t size)
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{
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givealbuffer_common(buf, 2, size, midi_freq);
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}
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