My code to take audio recorder.
Anything I missing?
I know following code is not upto mark but I tried to extract what I have in
the code.
public static AudioRecord findAudioRecord(Context context) {
AudioRecord recorder = null;
try {
AudioManager audioManager = (AudioManager)
context.getSystemService(Context.AUDIO_SERVICE);
int _rate =
Integer.parseInt(audioManager.getProperty(AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE));
//int bufferSize =
Integer.parseInt(audioManager.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER));
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}) {
Log.d(TAG, "Attempting rate " + _rate + "Hz, bits: " +
audioFormat + ", channel: "
+ channelConfig);
int bufferSize = AudioRecord.getMinBufferSize(_rate,
channelConfig, audioFormat);
if (bufferSize != AudioRecord.ERROR_BAD_VALUE) {
// check if we can instantiate and have a success
recorder = new
AudioRecord(MediaRecorder.AudioSource.DEFAULT, _rate, channelConfig,
audioFormat, bufferSize);
if (recorder.getState() == AudioRecord.STATE_INITIALIZED) {
_bufferSize = bufferSize;
return recorder;
}
}
}
}
} catch (Exception e) {
Log.e(TAG, "Exception, keep trying.", e);
}
// I'm removing above configurations (_rate) from below code...
for (int rate : new int[]{8000, 11025, 16000, 22050, 44100}) {
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(TAG, "Attempting rate " + rate + "Hz, bits: " +
audioFormat + ", channel: "
+ channelConfig);
bufferSize = AudioRecord.getMinBufferSize(rate,
channelConfig, audioFormat);
if (bufferSize != AudioRecord.ERROR_BAD_VALUE) {
// check if we can instantiate and have a success
recorder = new
AudioRecord(MediaRecorder.AudioSource.DEFAULT, rate, channelConfig,
audioFormat, bufferSize);
if (recorder.getState() ==
AudioRecord.STATE_INITIALIZED) {
_bufferSize = bufferSize;
return recorder;
}
}
} catch (Exception e) {
Log.e(TAG, rate + "Exception, keep trying.", e);
}
}
}
}
return null;
}
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