bitPickups/android-audio-recorder
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set thread priority

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This commit is contained in:
Alexey Kuznetsov 2016-03-12 23:00:44 +03:00
commit d7d979ff66
2 changed files with 49 additions and 27 deletions
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74
app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
View file

@ -17,9 +17,7 @@ import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.*;
import android.preference.PreferenceManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
@ -44,6 +42,7 @@ import com.github.axet.audiorecorder.encoders.FormatM4A;
import com.github.axet.audiorecorder.encoders.FormatWAV;
import com.github.axet.audiorecorder.widgets.PitchView;
import java.io.BufferedOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
@ -169,7 +168,7 @@ public class RecordingActivity extends AppCompatActivity {
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
maximumAltitude = 20000;
maximumAltitude = 5000;
sampleRate = Integer.parseInt(shared.getString(MainApplication.PREFERENCE_RATE, ""));
if (isEmulator() && Build.VERSION.SDK_INT < 23) {
@ -343,6 +342,13 @@ public class RecordingActivity extends AppCompatActivity {
thread = new Thread(new Runnable() {
@Override
public void run() {
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
int p = android.os.Process.getThreadPriority(android.os.Process.myTid());
if (p != android.os.Process.THREAD_PRIORITY_URGENT_AUDIO) {
Log.e(TAG, "Unable to set Thread Priority " + android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
}
DataOutputStream os = null;
AudioRecord recorder = null;
try {
@ -367,21 +373,25 @@ public class RecordingActivity extends AppCompatActivity {
});
}
os = new DataOutputStream(storage.open(tmp));
os = new DataOutputStream(new BufferedOutputStream(storage.open(tmp)));
int min = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);
if (min <= 0) {
throw new RuntimeException("Unable to initialize AudioRecord: Bad audio values");
}
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, channelConfig, audioFormat, min);
// make it 5 seconds buffer
int min2 = 5 * sampleRate
* (audioFormat == AudioFormat.ENCODING_PCM_16BIT ? 2 : 1)
* (channelConfig == AudioFormat.CHANNEL_IN_STEREO ? 2 : 1);
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, channelConfig, audioFormat, Math.min(min2, min));
if (recorder.getState() != AudioRecord.STATE_INITIALIZED) {
throw new RuntimeException("Unable to initialize AudioRecord");
}
recorder.startRecording();
// AudioRecord eats thread Inetrrupted exception
while (!Thread.currentThread().isInterrupted()) {
synchronized (thread) {
final int readSize = recorder.read(buffer, 0, buffer.length);
@ -434,6 +444,25 @@ public class RecordingActivity extends AppCompatActivity {
thread.start();
}
// calcuale buffer length dynamically, this way we can reduce thread cycles when activity in background
// or phone screen is off.
void updateBufferSize(boolean pause) {
Thread t = thread;
if (t == null) {
t = new Thread();
}
synchronized (t) {
if (pause)
samplesUpdate = (int) (1000 * sampleRate / 1000.0);
else
samplesUpdate = (int) (pitch.getPitchTime() * sampleRate / 1000.0);
buffer = new short[channelConfig == AudioFormat.CHANNEL_IN_MONO ? samplesUpdate : samplesUpdate * 2];
}
}
void addSamples(long s) {
samples += s;
@ -518,13 +547,24 @@ public class RecordingActivity extends AppCompatActivity {
SharedPreferences shared = PreferenceManager.getDefaultSharedPreferences(this);
if (shared.getBoolean(MainApplication.PREFERENCE_SILENT, false)) {
AudioManager am = (AudioManager) getBaseContext().getSystemService(Context.AUDIO_SERVICE);
am.setStreamVolume(AudioManager.STREAM_RING, am.getStreamVolume(AudioManager.STREAM_RING), AudioManager.FLAG_SHOW_UI);
soundMode = am.getRingerMode();
if (soundMode == AudioManager.RINGER_MODE_SILENT) {
// keep unchanged
soundMode = -1;
return;
}
am.setStreamVolume(AudioManager.STREAM_RING, am.getStreamVolume(AudioManager.STREAM_RING), AudioManager.FLAG_SHOW_UI);
am.setRingerMode(AudioManager.RINGER_MODE_SILENT);
}
}
void unsilent() {
// keep unchanged
if (soundMode == -1)
return;
SharedPreferences shared = PreferenceManager.getDefaultSharedPreferences(this);
if (shared.getBoolean(MainApplication.PREFERENCE_SILENT, false)) {
AudioManager am = (AudioManager) getBaseContext().getSystemService(Context.AUDIO_SERVICE);
@ -599,22 +639,4 @@ public class RecordingActivity extends AppCompatActivity {
});
}
// calcuale buffer length dynamically, this way we can reduce thread cycles when activity in background
// or phone screen is off.
void updateBufferSize(boolean pause) {
Thread t = thread;
if (t == null) {
t = new Thread();
}
synchronized (t) {
if (pause)
samplesUpdate = (int) (1000 * sampleRate / 1000.0);
else
samplesUpdate = (int) (pitch.getPitchTime() * sampleRate / 1000.0);
buffer = new short[channelConfig == AudioFormat.CHANNEL_IN_MONO ? samplesUpdate : samplesUpdate * 2];
}
}
}

2
app/src/main/java/com/github/axet/audiorecorder/encoders/FormatM4A.java
View file

@ -29,7 +29,7 @@ public class FormatM4A implements Encoder {
format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectHE);
format.setInteger(MediaFormat.KEY_SAMPLE_RATE, info.sampleRate);
format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, info.channels);
format.setInteger(MediaFormat.KEY_BIT_RATE, 128 * 1024);
format.setInteger(MediaFormat.KEY_BIT_RATE, 64 * 1024);
try {
encoder = MediaCodec.createEncoderByType("audio/mp4a-latm");