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#2301 am decoder enhancements. New squelch control and filter enhancements. (#2556)

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Co-authored-by: denny <dennis.sheirer@gmail.com>
This commit is contained in:
Denny Sheirer
2026-11-01 08:55:34 -05:00
committed by GitHub
parent 19d18b96b3
commit 8aadbe4706
33 changed files with 1886 additions and 396 deletions
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10
src/main/java/io/github/dsheirer/audio/playback/AudioProvider.java
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@@ -30,6 +30,16 @@ import javax.sound.sampled.AudioFormat;
*/
public abstract class AudioProvider
{
/**
* Converts the audio sample to a 16-bit PCM sample, limiting out of range values instead of allowing them to wrap.
* @param sample in range -1.0 to 1.0
* @return PCM sample
*/
protected static short toPcm(float sample)
{
return (short)(Math.clamp(sample, -1.0f, 1.0f) * Short.MAX_VALUE);
}
/**
* Audio format for this provider
*/

2
src/main/java/io/github/dsheirer/audio/playback/AudioProviderMono.java
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@@ -77,7 +77,7 @@ public class AudioProviderMono extends AudioProvider
for(int x = 0; x < AudioChannel.SAMPLES_PER_INTERVAL; x++)
{
shortBuffer.put((short) (audio[x] * Short.MAX_VALUE));
shortBuffer.put(toPcm(audio[x]));
}
return buffer;

2
src/main/java/io/github/dsheirer/audio/playback/AudioProviderMultiChannel.java
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@@ -108,7 +108,7 @@ public class AudioProviderMultiChannel extends AudioProvider
{
for(int channelNumber = 0; channelNumber < mAudioChannels.size(); channelNumber++)
{
shortBuffer.put((short)(samples[channelNumber][sampleCounter] * Short.MAX_VALUE));
shortBuffer.put(toPcm(samples[channelNumber][sampleCounter]));
}
}

4
src/main/java/io/github/dsheirer/audio/playback/AudioProviderStereo.java
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@@ -102,8 +102,8 @@ public class AudioProviderStereo extends AudioProvider
for(int x = 0; x < AudioChannel.SAMPLES_PER_INTERVAL; x++)
{
shortBuffer.put((short)(left[x] * Short.MAX_VALUE));
shortBuffer.put((short)(right[x] * Short.MAX_VALUE));
shortBuffer.put(toPcm(left[x]));
shortBuffer.put(toPcm(right[x]));
}
return buffer;