Example usage for android.media AudioRecord getState

List of usage examples for android.media AudioRecord getState

Introduction

In this page you can find the example usage for android.media AudioRecord getState.

Prototype

public int getState() 

Source Link

Document

Returns the state of the AudioRecord instance.

Usage

From source file:Main.java

/**
 * Check correct buffer size for your AudioRecord instance
 *
 * @param audioSource//  w ww  .j  av  a  2 s .c  o  m
 *     the audio source
 * @param fs
 *     the fs
 * @param channelConfiguration
 *     the channel configuration
 * @param audioEncoding
 *     the audio encoding
 * @return the int
 */
public static int checkCorrectBufferSize(int audioSource, int fs, int channelConfiguration, int audioEncoding) {
    for (int buffer : new int[] { 256, 512, 1024, 2048, 4096 }) { // add the rates you wish to check against
        AudioRecord audioRecordTemp = new AudioRecord(audioSource, fs, channelConfiguration, audioEncoding,
                buffer);
        if (audioRecordTemp != null && audioRecordTemp.getState() == AudioRecord.STATE_INITIALIZED) {
            return buffer;
        }
    }
    return 0;
}

From source file:Main.java

/**
 * Check correct buffer size for your AudioRecord instance
 *
 * @param audioSource/*  w  w w. ja va  2s . c  om*/
 *     the audio source
 * @param fs
 *     the fs
 * @param channelConfiguration
 *     the channel configuration
 * @param audioEncoding
 *     the audio encoding
 * @return the int
 */
public static int getValidBufferSize(int audioSource, int fs, int channelConfiguration, int audioEncoding) {
    for (int bufferSize : new int[] { 256, 512, 1024, 2048, 4096 }) { // add the rates you wish to check against
        AudioRecord audioRecordTemp = new AudioRecord(audioSource, fs, channelConfiguration, audioEncoding,
                bufferSize);
        if (audioRecordTemp != null && audioRecordTemp.getState() == AudioRecord.STATE_INITIALIZED) {
            return bufferSize;
        }
    }
    return 0;
}

From source file:edu.polyu.screamalert.SoundProcessing.java

public static AudioRecord findAudioRecord() {
    try {/*  w ww  .j  a v  a2  s . c o m*/
        recordBufferSize = AudioRecord.getMinBufferSize(Config.RECORDER_SAMPLERATE, Config.RECORDER_CHANNELS,
                Config.RECORDER_AUDIO_ENCODING);
        nSubframePerBuf = recordBufferSize / frameShift / 2; // e.g., 8192/128/2 = 32             
        System.out.println("recordBufferSize: " + recordBufferSize);
        if (recordBufferSize != AudioRecord.ERROR_BAD_VALUE) {
            // check if we can instantiate and have a success
            AudioRecord recorder = new AudioRecord(AudioSource.DEFAULT, Config.RECORDER_SAMPLERATE,
                    Config.RECORDER_CHANNELS, Config.RECORDER_AUDIO_ENCODING, recordBufferSize);
            if (recorder.getState() == AudioRecord.STATE_INITIALIZED) {
                return recorder;
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    Toast.makeText(thisContext, "Fail to create AudioRecord object", Toast.LENGTH_LONG).show();
    return null;
}

From source file:com.inmobi.ultrapush.InfoRecActivity.java

@Override
protected void onResume() {
    super.onResume();
    TextView tv = (TextView) findViewById(R.id.textview_info_rec);
    tv.setMovementMethod(new ScrollingMovementMethod());

    tv.setText("Testing..."); // TODO: No use...
    tv.invalidate();/*from   ww  w  . j a v a  2 s.  c o  m*/

    // Show supported sample rate and corresponding minimum buffer size.
    String[] requested = new String[] { "8000", "11025", "16000", "22050", "32000", "44100", "48000", "96000" };
    String st = "sampleRate minBufSize\n";
    ArrayList<String> validated = new ArrayList<String>();
    for (String s : requested) {
        int rate = Integer.parseInt(s);
        int minBufSize = AudioRecord.getMinBufferSize(rate, AudioFormat.CHANNEL_IN_MONO,
                AudioFormat.ENCODING_PCM_16BIT);
        if (minBufSize != AudioRecord.ERROR_BAD_VALUE) {
            validated.add(s);
            st += s + "  \t" + Integer.toString(minBufSize) + "\n";
        }
    }
    requested = validated.toArray(new String[0]);

    tv.setText(st);
    tv.invalidate();

    // Test audio source
    String[] audioSourceString = new String[] { "DEFAULT", "MIC", "VOICE_UPLINK", "VOICE_DOWNLINK",
            "VOICE_CALL", "CAMCORDER", "VOICE_RECOGNITION" };
    int[] audioSourceId = new int[] { MediaRecorder.AudioSource.DEFAULT, // Default audio source
            MediaRecorder.AudioSource.MIC, // Microphone audio source
            MediaRecorder.AudioSource.VOICE_UPLINK, // Voice call uplink (Tx) audio source
            MediaRecorder.AudioSource.VOICE_DOWNLINK, // Voice call downlink (Rx) audio source
            MediaRecorder.AudioSource.VOICE_CALL, // Voice call uplink + downlink audio source
            MediaRecorder.AudioSource.CAMCORDER, // Microphone audio source with same orientation as camera if available, the main device microphone otherwise (apilv7)
            MediaRecorder.AudioSource.VOICE_RECOGNITION, // Microphone audio source tuned for voice recognition if available, behaves like DEFAULT otherwise. (apilv7)
            //            MediaRecorder.AudioSource.VOICE_COMMUNICATION, // Microphone audio source tuned for voice communications such as VoIP. It will for instance take advantage of echo cancellation or automatic gain control if available. It otherwise behaves like DEFAULT if no voice processing is applied. (apilv11)
            //            MediaRecorder.AudioSource.REMOTE_SUBMIX,       // Audio source for a submix of audio streams to be presented remotely. (apilv19)
    };
    tv.append("\n-- Audio Source Test --");
    for (String s : requested) {
        int sampleRate = Integer.parseInt(s);
        int recBufferSize = AudioRecord.getMinBufferSize(sampleRate, AudioFormat.CHANNEL_IN_MONO,
                AudioFormat.ENCODING_PCM_16BIT);
        tv.append("\n(" + Integer.toString(sampleRate) + "Hz, MONO, 16BIT)\n");
        for (int iass = 0; iass < audioSourceId.length; iass++) {
            st = "";
            // wait for AudioRecord fully released...
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            AudioRecord record;
            record = new AudioRecord(audioSourceId[iass], sampleRate, AudioFormat.CHANNEL_IN_MONO,
                    AudioFormat.ENCODING_PCM_16BIT, recBufferSize);
            if (record.getState() == AudioRecord.STATE_INITIALIZED) {
                st += audioSourceString[iass] + " successed";
                int as = record.getAudioSource();
                if (as != audioSourceId[iass]) {
                    int i = 0;
                    while (i < audioSourceId.length) {
                        if (as == audioSourceId[iass]) {
                            break;
                        }
                        i++;
                    }
                    if (i >= audioSourceId.length) {
                        st += "(auto set to \"unknown source\")";
                    } else {
                        st += "(auto set to " + audioSourceString[i] + ")";
                    }
                }
                st += "\n";
            } else {
                st += audioSourceString[iass] + " failed\n";
            }
            record.release();
            record = null;
            tv.append(st);
            tv.invalidate();
        }
    }

}