[android-developers] AudioRecord producing no sound
As i have re-written this several times now. It is very nasty.
Im testing on a DroidX where everything i use to record a call is
coming back empty. Anyone know why or a fix?
My recording class:
[code]
package com.call.tests;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.media.MediaRecorder.AudioSource;
import android.os.Environment;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
class Record {
private MediaRecorder recorder = null;
private AudioRecord rawRecorder = null;
public boolean recording = false;
private Thread recordingThread = null;
public String path = ;
public String tempPath = ;
public void BeginRecording(String incomingNumber)
{
try
{
//recorder = new MediaRecorder();
if(incomingNumber.length() == 0)
incomingNumber = noNumber;
Date dateNow = new Date ();
SimpleDateFormat dateformat = new
SimpleDateFormat(_kms_MMdd);
StringBuilder now = new
StringBuilder( dateformat.format( dateNow ) );
path = incomingNumber + now.toString();
Log.d(TEST, NEW PATH: + path);
String longPath = sanitizePath(path, false);
File directory = new File(longPath).getParentFile();
if (!directory.exists() !directory.mkdirs()) {
Log.d(TEST, Path to file could not be created.);
} else {
Log.d(TEST, Path exists.);
}
rawRecorder = findAudioRecord();
rawRecorder.startRecording();
recording = true;
recordingThread = new Thread(new Runnable() {
@Override
public void run() {
writeAudioDataToFile();
}
},AudioRecorder Thread);
recordingThread.start();
/*recorder.reset();
recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_DOWNLINK);
recorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
recorder.setOutputFile(longPath);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
Log.e(TEST, Recording values set);
//try{
recorder.prepare();
recorder.start();
//Log.e(TEST, Recording: + recording);
//} catch (IOException e) {
//Log.e(TEST, prepare() failed : +
e.toString());
//}*/
}
catch(Exception ex)
{
Log.d(TEST, BeginRecording: + ex.toString());
}
}
private static int[] mSampleRates = new int[] { 8000, 11025, 22050,
44100 };
public AudioRecord findAudioRecord() {
for (int rate : mSampleRates) {
for (short audioFormat : new short[]
{ AudioFormat.ENCODING_PCM_8BIT, AudioFormat.ENCODING_PCM_16BIT }) {
for (short channelConfig : new short[]
{ AudioFormat.CHANNEL_IN_MONO, AudioFormat.CHANNEL_IN_STEREO }) {
try {
Log.d(TEST, Attempting rate + rate + Hz,
bits: + audioFormat + , channel: + channelConfig);
int bufferSize =
AudioRecord.getMinBufferSize(rate, channelConfig, audioFormat);
if (bufferSize != AudioRecord.ERROR_BAD_VALUE) {
AudioRecord recorder = new
AudioRecord(AudioSource.VOICE_CALL, rate, channelConfig, audioFormat,
bufferSize);
if (recorder.getState() ==
AudioRecord.STATE_INITIALIZED)
return recorder;
}
} catch (Exception e) {
Log.e(TEST, rate + Exception, keep
trying.,e);
}
}
}
}
return null;
}
public void writeAudioDataToFile()
{
tempPath = temp_raw_record;
String longPath = sanitizePath(tempPath, true);
File directory = new File(longPath).getParentFile();
if (!directory.exists() !directory.mkdirs()) {
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