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Add --audio-encoder option

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Similar to --video-encoder, but for audio.
This commit is contained in:
Romain Vimont 2023-02-19 20:20:29 +01:00
parent cbe346e650
commit 2788e442b2
9 changed files with 60 additions and 5 deletions
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4
app/scrcpy.1
View file

@ -31,6 +31,10 @@ Select an audio codec (opus or aac).
Default is opus.
.TP
.BI "\-\-audio\-encoder " name
Use a specific MediaCodec audio encoder (depending on the codec provided by \fB\-\-audio\-codec\fR).
.TP
.BI "\-b, \-\-bit\-rate " value
Encode the video at the given bit\-rate, expressed in bits/s. Unit suffixes are supported: '\fBK\fR' (x1000) and '\fBM\fR' (x1000000).

11
app/src/cli.c
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@ -61,6 +61,7 @@
#define OPT_NO_AUDIO 1041
#define OPT_AUDIO_BIT_RATE 1042
#define OPT_AUDIO_CODEC 1043
#define OPT_AUDIO_ENCODER_NAME 1044
struct sc_option {
char shortopt;
@ -116,6 +117,13 @@ static const struct sc_option options[] = {
.text = "Select an audio codec (opus or aac).\n"
"Default is opus.",
},
{
.longopt_id = OPT_AUDIO_ENCODER_NAME,
.longopt = "audio-encoder",
.argdesc = "name",
.text = "Use a specific MediaCodec audio encoder (depending on the "
"codec provided by --audio-codec).",
},
{
.shortopt = 'b',
.longopt = "bit-rate",
@ -1636,6 +1644,9 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
case OPT_ENCODER_NAME:
opts->encoder_name = optarg;
break;
case OPT_AUDIO_ENCODER_NAME:
opts->audio_encoder_name = optarg;
break;
case OPT_FORCE_ADB_FORWARD:
opts->force_adb_forward = true;
break;

1
app/src/options.h
View file

@ -97,6 +97,7 @@ struct scrcpy_options {
const char *render_driver;
const char *codec_options;
const char *encoder_name;
const char *audio_encoder_name;
#ifdef HAVE_V4L2
const char *v4l2_device;
#endif

1
app/src/scrcpy.c
View file

@ -368,6 +368,7 @@ scrcpy(struct scrcpy_options *options) {
.stay_awake = options->stay_awake,
.codec_options = options->codec_options,
.encoder_name = options->encoder_name,
.audio_encoder_name = options->audio_encoder_name,
.force_adb_forward = options->force_adb_forward,
.power_off_on_close = options->power_off_on_close,
.clipboard_autosync = options->clipboard_autosync,

5
app/src/server.c
View file

@ -73,6 +73,7 @@ sc_server_params_destroy(struct sc_server_params *params) {
free((char *) params->crop);
free((char *) params->codec_options);
free((char *) params->encoder_name);
free((char *) params->audio_encoder_name);
free((char *) params->tcpip_dst);
}
@ -97,6 +98,7 @@ sc_server_params_copy(struct sc_server_params *dst,
COPY(crop);
COPY(codec_options);
COPY(encoder_name);
COPY(audio_encoder_name);
COPY(tcpip_dst);
#undef COPY
@ -271,6 +273,9 @@ execute_server(struct sc_server *server,
if (params->encoder_name) {
ADD_PARAM("encoder_name=%s", params->encoder_name);
}
if (params->audio_encoder_name) {
ADD_PARAM("audio_encoder_name=%s", params->audio_encoder_name);
}
if (params->power_off_on_close) {
ADD_PARAM("power_off_on_close=true");
}

1
app/src/server.h
View file

@ -30,6 +30,7 @@ struct sc_server_params {
const char *crop;
const char *codec_options;
const char *encoder_name;
const char *audio_encoder_name;
struct sc_port_range port_range;
uint32_t tunnel_host;
uint16_t tunnel_port;

27
server/src/main/java/com/genymobile/scrcpy/AudioEncoder.java
View file

@ -46,6 +46,7 @@ public final class AudioEncoder {
private final Streamer streamer;
private final int bitRate;
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.
@ -60,9 +61,10 @@ public final class AudioEncoder {
private boolean ended;
public AudioEncoder(Streamer streamer, int bitRate) {
public AudioEncoder(Streamer streamer, int bitRate, String encoderName) {
this.streamer = streamer;
this.bitRate = bitRate;
this.encoderName = encoderName;
}
private static AudioFormat createAudioFormat() {
@ -210,14 +212,14 @@ 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);
recorder = createAudioRecord();
mediaCodecThread = new HandlerThread("AudioEncoder");
mediaCodecThread.start();
MediaFormat format = createFormat(mimeType, bitRate);
MediaFormat format = createFormat(codec.getMimeType(), bitRate);
mediaCodec.setCallback(new EncoderCallback(), new Handler(mediaCodecThread.getLooper()));
mediaCodec.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
@ -257,6 +259,8 @@ public final class AudioEncoder {
outputThread.start();
waitEnded();
} catch (ConfigurationException e) {
// Do not print stack trace, a user-friendly error-message has already been logged
} finally {
if (!recorderStarted) {
// Notify the client that the audio could not be captured
@ -307,6 +311,21 @@ 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

9
server/src/main/java/com/genymobile/scrcpy/Options.java
View file

@ -24,6 +24,7 @@ public class Options {
private boolean stayAwake;
private List<CodecOption> codecOptions;
private String encoderName;
private String audioEncoderName;
private boolean powerOffScreenOnClose;
private boolean clipboardAutosync = true;
private boolean downsizeOnError = true;
@ -180,6 +181,14 @@ public class Options {
this.encoderName = encoderName;
}
public String getAudioEncoderName() {
return audioEncoderName;
}
public void setAudioEncoderName(String audioEncoderName) {
this.audioEncoderName = audioEncoderName;
}
public void setPowerOffScreenOnClose(boolean powerOffScreenOnClose) {
this.powerOffScreenOnClose = powerOffScreenOnClose;
}

6
server/src/main/java/com/genymobile/scrcpy/Server.java
View file

@ -112,7 +112,7 @@ public final class Server {
if (audio) {
Streamer audioStreamer = new Streamer(connection.getAudioFd(), options.getAudioCodec(), options.getSendCodecId(),
options.getSendFrameMeta());
audioEncoder = new AudioEncoder(audioStreamer, options.getAudioBitRate());
audioEncoder = new AudioEncoder(audioStreamer, options.getAudioBitRate(), options.getAudioEncoderName());
audioEncoder.start();
}
@ -264,6 +264,10 @@ public final class Server {
options.setEncoderName(value);
}
break;
case "audio_encoder_name":
if (!value.isEmpty()) {
options.setAudioEncoderName(value);
}
case "power_off_on_close":
boolean powerOffScreenOnClose = Boolean.parseBoolean(value);
options.setPowerOffScreenOnClose(powerOffScreenOnClose);