Use a streamer to send the audio stream
Send each encoded audio packet using a streamer. PR #3757 <https://github.com/Genymobile/scrcpy/pull/3757>
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4 changed files with 58 additions and 2 deletions
46
server/src/main/java/com/genymobile/scrcpy/AudioCodec.java
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46
server/src/main/java/com/genymobile/scrcpy/AudioCodec.java
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@ -0,0 +1,46 @@
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package com.genymobile.scrcpy;
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import android.media.MediaFormat;
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public enum AudioCodec implements Codec {
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OPUS(0x6f_70_75_73, "opus", MediaFormat.MIMETYPE_AUDIO_OPUS);
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private final int id; // 4-byte ASCII representation of the name
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private final String name;
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private final String mimeType;
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AudioCodec(int id, String name, String mimeType) {
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this.id = id;
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this.name = name;
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this.mimeType = mimeType;
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}
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@Override
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public Type getType() {
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return Type.AUDIO;
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}
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@Override
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public int getId() {
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return id;
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}
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@Override
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public String getName() {
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return name;
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}
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@Override
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public String getMimeType() {
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return mimeType;
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}
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public static AudioCodec findByName(String name) {
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for (AudioCodec codec : values()) {
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if (codec.name.equals(name)) {
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return codec;
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}
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}
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return null;
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}
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}
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@ -49,6 +49,8 @@ public final class AudioEncoder {
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private static final int READ_MS = 5; // milliseconds
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private static final int READ_SIZE = SAMPLE_RATE * CHANNELS * BYTES_PER_SAMPLE * READ_MS / 1000;
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private final Streamer streamer;
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// Capacity of 64 is in practice "infinite" (it is limited by the number of available MediaCodec buffers, typically 4).
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// So many pending tasks would lead to an unacceptable delay anyway.
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private final BlockingQueue<InputTask> inputTasks = new ArrayBlockingQueue<>(64);
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@ -62,6 +64,10 @@ public final class AudioEncoder {
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private boolean ended;
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public AudioEncoder(Streamer streamer) {
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this.streamer = streamer;
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}
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private static AudioFormat createAudioFormat() {
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AudioFormat.Builder builder = new AudioFormat.Builder();
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builder.setEncoding(FORMAT);
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@ -141,11 +147,13 @@ public final class AudioEncoder {
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}
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private void outputThread(MediaCodec mediaCodec) throws IOException, InterruptedException {
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streamer.writeHeader();
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while (!Thread.currentThread().isInterrupted()) {
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OutputTask task = outputTasks.take();
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ByteBuffer buffer = mediaCodec.getOutputBuffer(task.index);
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try {
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Ln.i("Audio packet [pts=" + task.bufferInfo.presentationTimeUs + "] " + buffer.remaining() + " bytes");
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streamer.writePacket(buffer, task.bufferInfo);
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} finally {
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mediaCodec.releaseOutputBuffer(task.index, false);
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}
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@ -4,6 +4,7 @@ public interface Codec {
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enum Type {
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VIDEO,
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AUDIO,
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}
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Type getType();
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@ -111,7 +111,8 @@ public final class Server {
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}
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if (audio) {
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audioEncoder = new AudioEncoder();
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Streamer audioStreamer = new Streamer(connection.getAudioFd(), AudioCodec.OPUS, options.getSendCodecId(), options.getSendFrameMeta());
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audioEncoder = new AudioEncoder(audioStreamer);
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audioEncoder.start();
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}
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