studiorailgun/Renderer
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Audio engine basics

Browse Source
This commit is contained in:
austin 2021-07-19 22:10:23 -04:00
parent 0f4a764470
commit dd30e73660
5 changed files with 286 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
pom.xml
View File

@ -39,6 +39,17 @@
<artifactId>lwjgl-opengles</artifactId>
<version>${lwjgl.version}</version>
</dependency>
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-openal</artifactId>
<version>${lwjgl.version}</version>
</dependency>
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-stb</artifactId>
<version>${lwjgl.version}</version>
</dependency>
<!-- generic LWJGL runtimes -->
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl</artifactId>
@ -46,6 +57,7 @@
<classifier>${lwjgl.natives}</classifier>
<scope>runtime</scope>
</dependency>
<!-- assimp runtimes -->
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-assimp</artifactId>
@ -53,6 +65,7 @@
<classifier>${lwjgl.natives}</classifier>
<scope>runtime</scope>
</dependency>
<!-- GLFW runtimes -->
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-glfw</artifactId>
@ -60,6 +73,7 @@
<classifier>${lwjgl.natives}</classifier>
<scope>runtime</scope>
</dependency>
<!-- opengl runtimes -->
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-opengl</artifactId>
@ -67,6 +81,7 @@
<classifier>${lwjgl.natives}</classifier>
<scope>runtime</scope>
</dependency>
<!-- Embedded opengl runtimes -->
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-opengles</artifactId>
@ -74,6 +89,21 @@
<classifier>${lwjgl.natives}</classifier>
<scope>runtime</scope>
</dependency>
<!-- Audio runtimes -->
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-openal</artifactId>
<version>${lwjgl.version}</version>
<classifier>${lwjgl.natives}</classifier>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.lwjgl</groupId>
<artifactId>lwjgl-stb</artifactId>
<version>${lwjgl.version}</version>
<classifier>${lwjgl.natives}</classifier>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.joml</groupId>
<artifactId>joml</artifactId>

105
src/main/java/electrosphere/audio/AudioBuffer.java
View File

@ -1,5 +1,110 @@
package electrosphere.audio;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.nio.ShortBuffer;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.SeekableByteChannel;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.lwjgl.BufferUtils;
import static org.lwjgl.BufferUtils.createByteBuffer;
import static org.lwjgl.openal.AL10.*;
import static org.lwjgl.stb.STBVorbis.*;
import org.lwjgl.stb.STBVorbisInfo;
import org.lwjgl.system.MemoryStack;
import org.lwjgl.system.MemoryUtil;
import static org.lwjgl.system.MemoryUtil.NULL;
public class AudioBuffer {
private int bufferId;
private ByteBuffer vorbis = null;
private ShortBuffer pcm = null;
public AudioBuffer(String fileName) throws Exception {
bufferId = alGenBuffers();
try (STBVorbisInfo info = STBVorbisInfo.malloc()) {
ShortBuffer pcm = readVorbis(fileName, 32 * 1024, info);
// Copy to buffer
alBufferData(bufferId, info.channels() == 1 ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16, pcm, info.sample_rate());
}
}
private ShortBuffer readVorbis(String resource, int bufferSize, STBVorbisInfo info) throws Exception {
try (MemoryStack stack = MemoryStack.stackPush()) {
vorbis = AudioBuffer.ioResourceToByteBuffer(resource, bufferSize);
IntBuffer error = stack.mallocInt(1);
long decoder = stb_vorbis_open_memory(vorbis, error, null);
if (decoder == NULL) {
throw new RuntimeException("Failed to open Ogg Vorbis file. Error: " + error.get(0));
}
stb_vorbis_get_info(decoder, info);
int channels = info.channels();
int lengthSamples = stb_vorbis_stream_length_in_samples(decoder);
pcm = MemoryUtil.memAllocShort(lengthSamples);
pcm.limit(stb_vorbis_get_samples_short_interleaved(decoder, channels, pcm) * channels);
stb_vorbis_close(decoder);
return pcm;
}
}
public static ByteBuffer ioResourceToByteBuffer(String resource, int bufferSize) throws IOException {
ByteBuffer buffer;
Path path = Paths.get(resource);
if (Files.isReadable(path)) {
try (SeekableByteChannel fc = Files.newByteChannel(path)) {
buffer = BufferUtils.createByteBuffer((int) fc.size() + 1);
while (fc.read(buffer) != -1) ;
}
} else {
try (
InputStream source = AudioBuffer.class.getResourceAsStream(resource);
ReadableByteChannel rbc = Channels.newChannel(source)) {
buffer = createByteBuffer(bufferSize);
while (true) {
int bytes = rbc.read(buffer);
if (bytes == -1) {
break;
}
if (buffer.remaining() == 0) {
int capacity = buffer.capacity();
ByteBuffer newBuffer = createByteBuffer(capacity * 2);
for(int i = 0; i < capacity; i++){
newBuffer.put(buffer.get());
}
buffer = newBuffer;
}
}
}
}
buffer.flip();
return buffer;
}
public int getBufferId() {
return this.bufferId;
}
public void cleanup() {
alDeleteBuffers(this.bufferId);
}
}

43
src/main/java/electrosphere/audio/AudioEngine.java
View File

@ -1,5 +1,46 @@
package electrosphere.audio;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.joml.Matrix4f;
import org.lwjgl.openal.*;
import static org.lwjgl.openal.ALC10.*;
import static org.lwjgl.system.MemoryUtil.NULL;
public class AudioEngine {
private long device;
private long context;
private AudioListener listener;
private final List<AudioBuffer> soundBufferList;
private final Map<String, AudioSource> soundSourceMap;
private final Matrix4f cameraMatrix;
public AudioEngine() {
soundBufferList = new ArrayList<>();
soundSourceMap = new HashMap<>();
cameraMatrix = new Matrix4f();
}
public void init() throws Exception {
this.device = alcOpenDevice((ByteBuffer) null);
if (device == NULL) {
throw new IllegalStateException("Failed to open the default OpenAL device.");
}
ALCCapabilities deviceCaps = ALC.createCapabilities(device);
this.context = alcCreateContext(device, (IntBuffer) null);
if (context == NULL) {
throw new IllegalStateException("Failed to create OpenAL context.");
}
alcMakeContextCurrent(context);
AL.createCapabilities(deviceCaps);
}
}

42
src/main/java/electrosphere/audio/AudioListener.java Normal file
View File

@ -0,0 +1,42 @@
package electrosphere.audio;
import org.joml.Vector3f;
import static org.lwjgl.openal.AL10.*;
/**
*
* @author amaterasu
*/
public class AudioListener {
public AudioListener() {
this(new Vector3f(0, 0, 0));
}
public AudioListener(Vector3f position) {
alListener3f(AL_POSITION, position.x, position.y, position.z);
alListener3f(AL_VELOCITY, 0, 0, 0);
}
public void setSpeed(Vector3f speed) {
alListener3f(AL_VELOCITY, speed.x, speed.y, speed.z);
}
public void setPosition(Vector3f position) {
alListener3f(AL_POSITION, position.x, position.y, position.z);
}
public void setOrientation(Vector3f at, Vector3f up) {
float[] data = new float[6];
data[0] = at.x;
data[1] = at.y;
data[2] = at.z;
data[3] = up.x;
data[4] = up.y;
data[5] = up.z;
alListenerfv(AL_ORIENTATION, data);
}
}

67
src/main/java/electrosphere/audio/AudioSource.java Normal file
View File

@ -0,0 +1,67 @@
package electrosphere.audio;
import org.joml.Vector3f;
import static org.lwjgl.openal.AL10.*;
/**
*
* @author amaterasu
*/
public class AudioSource {
int sourceId;
public AudioSource(boolean loop, boolean relative){
this.sourceId = alGenSources();
if (loop) {
alSourcei(sourceId, AL_LOOPING, AL_TRUE);
}
if (relative) {
alSourcei(sourceId, AL_SOURCE_RELATIVE, AL_TRUE);
}
}
public void setBuffer(int bufferId) {
stop();
alSourcei(sourceId, AL_BUFFER, bufferId);
}
public void setPosition(Vector3f position) {
alSource3f(sourceId, AL_POSITION, position.x, position.y, position.z);
}
public void setSpeed(Vector3f speed) {
alSource3f(sourceId, AL_VELOCITY, speed.x, speed.y, speed.z);
}
public void setGain(float gain) {
alSourcef(sourceId, AL_GAIN, gain);
}
public void setProperty(int param, float value) {
alSourcef(sourceId, param, value);
}
public void play() {
alSourcePlay(sourceId);
}
public boolean isPlaying() {
return alGetSourcei(sourceId, AL_SOURCE_STATE) == AL_PLAYING;
}
public void pause() {
alSourcePause(sourceId);
}
public void stop() {
alSourceStop(sourceId);
}
public void cleanup() {
stop();
alDeleteSources(sourceId);
}
}