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Move BaseAudioProcessor abstract class to common.

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This is a prerequisite step to making the `ResamplingAudioProcessor` public.

PiperOrigin-RevId: 501545561
This commit is contained in:
samrobinson 2023-01-12 14:11:04 +00:00 committed by Rohit Singh
parent 16285ca5df
commit d2c5a1bfb9
9 changed files with 158 additions and 128 deletions
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148
libraries/common/src/main/java/androidx/media3/common/audio/BaseAudioProcessor.java Normal file
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@ -0,0 +1,148 @@
/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.media3.common.audio;
import androidx.annotation.CallSuper;
import androidx.media3.common.util.UnstableApi;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
/**
* Base class for audio processors that keep an output buffer and an internal buffer that is reused
* whenever input is queued. Subclasses should override {@link #onConfigure(AudioFormat)} to return
* the output audio format for the processor if it's active.
*/
@UnstableApi
public abstract class BaseAudioProcessor implements AudioProcessor {
/** The current input audio format. */
protected AudioFormat inputAudioFormat;
/** The current output audio format. */
protected AudioFormat outputAudioFormat;
private AudioFormat pendingInputAudioFormat;
private AudioFormat pendingOutputAudioFormat;
private ByteBuffer buffer;
private ByteBuffer outputBuffer;
private boolean inputEnded;
public BaseAudioProcessor() {
buffer = EMPTY_BUFFER;
outputBuffer = EMPTY_BUFFER;
pendingInputAudioFormat = AudioFormat.NOT_SET;
pendingOutputAudioFormat = AudioFormat.NOT_SET;
inputAudioFormat = AudioFormat.NOT_SET;
outputAudioFormat = AudioFormat.NOT_SET;
}
@Override
@CanIgnoreReturnValue
public final AudioFormat configure(AudioFormat inputAudioFormat)
throws UnhandledAudioFormatException {
pendingInputAudioFormat = inputAudioFormat;
pendingOutputAudioFormat = onConfigure(inputAudioFormat);
return isActive() ? pendingOutputAudioFormat : AudioFormat.NOT_SET;
}
@Override
public boolean isActive() {
return pendingOutputAudioFormat != AudioFormat.NOT_SET;
}
@Override
public final void queueEndOfStream() {
inputEnded = true;
onQueueEndOfStream();
}
@CallSuper
@Override
public ByteBuffer getOutput() {
ByteBuffer outputBuffer = this.outputBuffer;
this.outputBuffer = EMPTY_BUFFER;
return outputBuffer;
}
@CallSuper
@SuppressWarnings("ReferenceEquality")
@Override
public boolean isEnded() {
return inputEnded && outputBuffer == EMPTY_BUFFER;
}
@Override
public final void flush() {
outputBuffer = EMPTY_BUFFER;
inputEnded = false;
inputAudioFormat = pendingInputAudioFormat;
outputAudioFormat = pendingOutputAudioFormat;
onFlush();
}
@Override
public final void reset() {
flush();
buffer = EMPTY_BUFFER;
pendingInputAudioFormat = AudioFormat.NOT_SET;
pendingOutputAudioFormat = AudioFormat.NOT_SET;
inputAudioFormat = AudioFormat.NOT_SET;
outputAudioFormat = AudioFormat.NOT_SET;
onReset();
}
/**
* Replaces the current output buffer with a buffer of at least {@code size} bytes and returns it.
* Callers should write to the returned buffer then {@link ByteBuffer#flip()} it so it can be read
* via {@link #getOutput()}.
*/
protected final ByteBuffer replaceOutputBuffer(int size) {
if (buffer.capacity() < size) {
buffer = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder());
} else {
buffer.clear();
}
outputBuffer = buffer;
return buffer;
}
/** Returns whether the current output buffer has any data remaining. */
protected final boolean hasPendingOutput() {
return outputBuffer.hasRemaining();
}
/** Called when the processor is configured for a new input format. */
@CanIgnoreReturnValue
protected AudioFormat onConfigure(AudioFormat inputAudioFormat)
throws UnhandledAudioFormatException {
return AudioFormat.NOT_SET;
}
/** Called when the end-of-stream is queued to the processor. */
protected void onQueueEndOfStream() {
// Do nothing.
}
/** Called when the processor is flushed, directly or as part of resetting. */
protected void onFlush() {
// Do nothing.
}
/** Called when the processor is reset. */
protected void onReset() {
// Do nothing.
}
}

130
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/BaseAudioProcessor.java
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@ -15,135 +15,11 @@
*/
package androidx.media3.exoplayer.audio;
import androidx.annotation.CallSuper;
import androidx.media3.common.audio.AudioProcessor;
import androidx.media3.common.util.UnstableApi;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
/**
* Base class for audio processors that keep an output buffer and an internal buffer that is reused
* whenever input is queued. Subclasses should override {@link #onConfigure(AudioFormat)} to return
* the output audio format for the processor if it's active.
* @deprecated Use {@link androidx.media3.common.audio.BaseAudioProcessor}.
*/
@Deprecated
@UnstableApi
public abstract class BaseAudioProcessor implements AudioProcessor {
/** The current input audio format. */
protected AudioFormat inputAudioFormat;
/** The current output audio format. */
protected AudioFormat outputAudioFormat;
private AudioFormat pendingInputAudioFormat;
private AudioFormat pendingOutputAudioFormat;
private ByteBuffer buffer;
private ByteBuffer outputBuffer;
private boolean inputEnded;
public BaseAudioProcessor() {
buffer = EMPTY_BUFFER;
outputBuffer = EMPTY_BUFFER;
pendingInputAudioFormat = AudioFormat.NOT_SET;
pendingOutputAudioFormat = AudioFormat.NOT_SET;
inputAudioFormat = AudioFormat.NOT_SET;
outputAudioFormat = AudioFormat.NOT_SET;
}
@Override
@CanIgnoreReturnValue
public final AudioFormat configure(AudioFormat inputAudioFormat)
throws UnhandledAudioFormatException {
pendingInputAudioFormat = inputAudioFormat;
pendingOutputAudioFormat = onConfigure(inputAudioFormat);
return isActive() ? pendingOutputAudioFormat : AudioFormat.NOT_SET;
}
@Override
public boolean isActive() {
return pendingOutputAudioFormat != AudioFormat.NOT_SET;
}
@Override
public final void queueEndOfStream() {
inputEnded = true;
onQueueEndOfStream();
}
@CallSuper
@Override
public ByteBuffer getOutput() {
ByteBuffer outputBuffer = this.outputBuffer;
this.outputBuffer = EMPTY_BUFFER;
return outputBuffer;
}
@CallSuper
@SuppressWarnings("ReferenceEquality")
@Override
public boolean isEnded() {
return inputEnded && outputBuffer == EMPTY_BUFFER;
}
@Override
public final void flush() {
outputBuffer = EMPTY_BUFFER;
inputEnded = false;
inputAudioFormat = pendingInputAudioFormat;
outputAudioFormat = pendingOutputAudioFormat;
onFlush();
}
@Override
public final void reset() {
flush();
buffer = EMPTY_BUFFER;
pendingInputAudioFormat = AudioFormat.NOT_SET;
pendingOutputAudioFormat = AudioFormat.NOT_SET;
inputAudioFormat = AudioFormat.NOT_SET;
outputAudioFormat = AudioFormat.NOT_SET;
onReset();
}
/**
* Replaces the current output buffer with a buffer of at least {@code size} bytes and returns it.
* Callers should write to the returned buffer then {@link ByteBuffer#flip()} it so it can be read
* via {@link #getOutput()}.
*/
protected final ByteBuffer replaceOutputBuffer(int size) {
if (buffer.capacity() < size) {
buffer = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder());
} else {
buffer.clear();
}
outputBuffer = buffer;
return buffer;
}
/** Returns whether the current output buffer has any data remaining. */
protected final boolean hasPendingOutput() {
return outputBuffer.hasRemaining();
}
/** Called when the processor is configured for a new input format. */
@CanIgnoreReturnValue
protected AudioFormat onConfigure(AudioFormat inputAudioFormat)
throws UnhandledAudioFormatException {
return AudioFormat.NOT_SET;
}
/** Called when the end-of-stream is queued to the processor. */
protected void onQueueEndOfStream() {
// Do nothing.
}
/** Called when the processor is flushed, directly or as part of resetting. */
protected void onFlush() {
// Do nothing.
}
/** Called when the processor is reset. */
protected void onReset() {
// Do nothing.
}
}
public abstract class BaseAudioProcessor extends androidx.media3.common.audio.BaseAudioProcessor {}

1
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/ChannelMappingAudioProcessor.java
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@ -19,6 +19,7 @@ import androidx.annotation.Nullable;
import androidx.media3.common.C;
import androidx.media3.common.Format;
import androidx.media3.common.audio.AudioProcessor;
import androidx.media3.common.audio.BaseAudioProcessor;
import androidx.media3.common.util.Assertions;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.nio.ByteBuffer;

1
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/FloatResamplingAudioProcessor.java
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@ -18,6 +18,7 @@ package androidx.media3.exoplayer.audio;
import androidx.media3.common.C;
import androidx.media3.common.Format;
import androidx.media3.common.audio.AudioProcessor;
import androidx.media3.common.audio.BaseAudioProcessor;
import androidx.media3.common.util.Util;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.nio.ByteBuffer;

1
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/ResamplingAudioProcessor.java
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@ -18,6 +18,7 @@ package androidx.media3.exoplayer.audio;
import androidx.media3.common.C;
import androidx.media3.common.Format;
import androidx.media3.common.audio.AudioProcessor;
import androidx.media3.common.audio.BaseAudioProcessor;
import androidx.media3.common.util.Util;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.nio.ByteBuffer;

1
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/SilenceSkippingAudioProcessor.java
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@ -21,6 +21,7 @@ import static java.lang.annotation.ElementType.TYPE_USE;
import androidx.annotation.IntDef;
import androidx.media3.common.C;
import androidx.media3.common.audio.AudioProcessor;
import androidx.media3.common.audio.BaseAudioProcessor;
import androidx.media3.common.util.Assertions;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.common.util.Util;

1
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/TeeAudioProcessor.java
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@ -20,6 +20,7 @@ import static java.lang.Math.min;
import androidx.annotation.Nullable;
import androidx.media3.common.C;
import androidx.media3.common.audio.AudioProcessorChain;
import androidx.media3.common.audio.BaseAudioProcessor;
import androidx.media3.common.util.Assertions;
import androidx.media3.common.util.Log;
import androidx.media3.common.util.UnstableApi;

1
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/TrimmingAudioProcessor.java
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@ -19,6 +19,7 @@ import static java.lang.Math.min;
import androidx.media3.common.C;
import androidx.media3.common.Format;
import androidx.media3.common.audio.BaseAudioProcessor;
import androidx.media3.common.util.Util;
import java.nio.ByteBuffer;

2
libraries/transformer/src/main/java/androidx/media3/transformer/SpeedChangingAudioProcessor.java
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@ -20,8 +20,8 @@ import static java.lang.Math.min;
import androidx.media3.common.C;
import androidx.media3.common.audio.AudioProcessor;
import androidx.media3.common.audio.BaseAudioProcessor;
import androidx.media3.common.util.Util;
import androidx.media3.exoplayer.audio.BaseAudioProcessor;
import androidx.media3.exoplayer.audio.SonicAudioProcessor;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.nio.ByteBuffer;