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Add --audio-encoder

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Similar to --video-encoder, but for audio.

PR #3757 <https://github.com/Genymobile/scrcpy/pull/3757>
This commit is contained in:
Romain Vimont
2023-02-19 20:20:29 +01:00
parent 4768d3f8b8
commit dce8cf5108
12 changed files with 64 additions and 6 deletions
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29
server/src/main/java/com/genymobile/scrcpy/AudioEncoder.java
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@@ -51,6 +51,7 @@ public final class AudioEncoder {
private final Streamer streamer;
private final int bitRate;
private final List<CodecOption> codecOptions;
private final String encoderName;
// Capacity of 64 is in practice "infinite" (it is limited by the number of available MediaCodec buffers, typically 4).
// So many pending tasks would lead to an unacceptable delay anyway.
@@ -65,10 +66,11 @@ public final class AudioEncoder {
private boolean ended;
public AudioEncoder(Streamer streamer, int bitRate, List<CodecOption> codecOptions) {
public AudioEncoder(Streamer streamer, int bitRate, List<CodecOption> codecOptions, String encoderName) {
this.streamer = streamer;
this.bitRate = bitRate;
this.codecOptions = codecOptions;
this.encoderName = encoderName;
}
private static AudioFormat createAudioFormat() {
@@ -177,6 +179,8 @@ public final class AudioEncoder {
thread = new Thread(() -> {
try {
encode();
} catch (ConfigurationException e) {
// Do not print stack trace, a user-friendly error-message has already been logged
} catch (IOException e) {
Ln.e("Audio encoding error", e);
} finally {
@@ -215,7 +219,7 @@ public final class AudioEncoder {
}
@TargetApi(Build.VERSION_CODES.M)
public void encode() throws IOException {
public void encode() throws IOException, ConfigurationException {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
Ln.w("Audio disabled: it is not supported before Android 11");
streamer.writeDisableStream();
@@ -228,13 +232,13 @@ public final class AudioEncoder {
boolean mediaCodecStarted = false;
boolean recorderStarted = false;
try {
String mimeType = streamer.getCodec().getMimeType();
mediaCodec = MediaCodec.createEncoderByType(mimeType); // may throw IOException
Codec codec = streamer.getCodec();
mediaCodec = createMediaCodec(codec, encoderName);
mediaCodecThread = new HandlerThread("AudioEncoder");
mediaCodecThread.start();
MediaFormat format = createFormat(mimeType, bitRate, codecOptions);
MediaFormat format = createFormat(codec.getMimeType(), bitRate, codecOptions);
mediaCodec.setCallback(new EncoderCallback(), new Handler(mediaCodecThread.getLooper()));
mediaCodec.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
@@ -324,6 +328,21 @@ public final class AudioEncoder {
}
}
private static MediaCodec createMediaCodec(Codec codec, String encoderName) throws IOException, ConfigurationException {
if (encoderName != null) {
Ln.d("Creating audio encoder by name: '" + encoderName + "'");
try {
return MediaCodec.createByCodecName(encoderName);
} catch (IllegalArgumentException e) {
Ln.e(CodecUtils.buildUnknownEncoderMessage(codec, encoderName));
throw new ConfigurationException("Unknown encoder: " + encoderName);
}
}
MediaCodec mediaCodec = MediaCodec.createEncoderByType(codec.getMimeType());
Ln.d("Using audio encoder: '" + mediaCodec.getName() + "'");
return mediaCodec;
}
private class EncoderCallback extends MediaCodec.Callback {
@TargetApi(Build.VERSION_CODES.N)
@Override