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#pragma comment ( lib, "libogg_static.lib" )
#pragma comment ( lib, "libvorbis_static.lib" )
#pragma comment ( lib, "libvorbisfile_static.lib" )
#pragma comment ( lib, "OpenAL32.lib" )
#include "vorbis/vorbisfile.h"
#include <windows.h>
#include <al.h>
#include <alc.h>
#include <stdio.h>
#define NUM_BUFFERS 32
#define BUFFER_SIZE 4096
void main()
{
ALCdevice *device;
ALCcontext *context;
ALuint source, buffer;
ALint state, num;
device = alcOpenDevice(NULL);
context = alcCreateContext(device, NULL);
alcMakeContextCurrent(context);
alGenSources(1, &source);
FILE *fp;
fopen_s(&fp,"sample.ogg", "rb");
OggVorbis_File vf;
int current = 0;
ov_open(fp, &vf, NULL, 0);
while(1) {
char data[BUFFER_SIZE];
long size = ov_read(&vf, data, sizeof(data), 0, 2, 1,
¤t);
vorbis_info *info = ov_info(&vf, -1);
ALenum format = info->channels == 1 ? AL_FORMAT_MONO16 :
AL_FORMAT_STEREO16;
if (size <= 0) {
break;
}
alGetSourcei(source, AL_BUFFERS_QUEUED, &num);
if (num < NUM_BUFFERS) {
alGenBuffers(1, &buffer);
} else {
alGetSourcei(source, AL_SOURCE_STATE, &state);
if (state != AL_PLAYING) {
alSourcePlay(source);
}
while (alGetSourcei(source, AL_BUFFERS_PROCESSED, &num), num ==
0) {
Sleep(100);
}
alSourceUnqueueBuffers(source, 1, &buffer);
}
alBufferData(buffer, format, data, size, info->rate);
alSourceQueueBuffers(source, 1, &buffer);
}
ov_clear(&vf);
alGetSourcei(source, AL_SOURCE_STATE, &state);
if (state != AL_PLAYING) {
alSourcePlay(source);
}
while (alGetSourcei(source, AL_SOURCE_STATE, &state), state ==
AL_PLAYING) {
Sleep(100);
}
while (alGetSourcei(source, AL_BUFFERS_PROCESSED, &num), num > 0)
{
alSourceUnqueueBuffers(source, 1, &buffer);
alDeleteBuffers(1, &buffer);
}
alDeleteSources(1, &source);
alcMakeContextCurrent(NULL);
alcDestroyContext(context);
alcCloseDevice(device);
return;
}
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