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/**
* Copyright 2013-2023 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.common.av;
import java.nio.ByteBuffer;
import com.jogamp.common.av.AudioFormat;
import com.jogamp.common.av.AudioSink;
public class NullAudioSink implements AudioSink {
private volatile float playSpeed = 1.0f;
private volatile boolean playRequested = false;
private volatile int playingPTS = AudioFrame.INVALID_PTS;
private float volume = 1.0f;
private AudioFormat chosenFormat;
private boolean available;
public NullAudioSink() {
available = true;
chosenFormat = null;
}
@Override
public final void lockExclusive() { }
@Override
public final void unlockExclusive() { }
@Override
public boolean isAvailable() {
return available;
}
@Override
public final float getPlaySpeed() { return playSpeed; }
@Override
public final boolean setPlaySpeed(float rate) {
if( Math.abs(1.0f - rate) < 0.01f ) {
rate = 1.0f;
}
playSpeed = rate;
return true;
}
@Override
public final float getVolume() {
// FIXME
return volume;
}
@Override
public final boolean setVolume(final float v) {
// FIXME
volume = v;
return true;
}
@Override
public int getPreferredSampleRate() {
return DefaultFormat.sampleRate;
}
@Override
public float getDefaultLatency() {
return 0;
}
@Override
public float getLatency() {
return 0;
}
@Override
public AudioFormat getPreferredFormat() {
return DefaultFormat;
}
@Override
public final int getMaxSupportedChannels() {
return 8;
}
@Override
public final boolean isSupported(final AudioFormat format) {
/**
* If we like to emulate constraints ..
*
if( format.planar || !format.littleEndian ) {
return false;
}
if( format.sampleRate != DefaultFormat.sampleRate ) {
return false;
}
*/
return true;
}
@Override
public boolean init(final AudioFormat requestedFormat, final int frameDuration, final int initialQueueSize, final int queueGrowAmount, final int queueLimit) {
chosenFormat = requestedFormat;
return true;
}
@Override
public final AudioFormat getChosenFormat() {
return chosenFormat;
}
@Override
public boolean isPlaying() {
return playRequested;
}
@Override
public void play() {
playRequested = true;
}
@Override
public void pause() {
playRequested = false;
}
@Override
public void flush() {
}
@Override
public void destroy() {
available = false;
chosenFormat = null;
}
@Override
public final int getEnqueuedFrameCount() {
return 0;
}
@Override
public int getFrameCount() {
return 0;
}
@Override
public int getQueuedFrameCount() {
return 0;
}
@Override
public int getQueuedByteCount() {
return 0;
}
@Override
public int getQueuedTime() {
return 0;
}
@Override
public final int getPTS() { return playingPTS; }
@Override
public int getFreeFrameCount() {
return 1;
}
@Override
public AudioFrame enqueueData(final int pts, final ByteBuffer bytes, final int byteCount) {
if( !available || null == chosenFormat ) {
return null;
}
playingPTS = pts;
return null;
}
}
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