Examples with AudioRecord android.media.AudioRecord used on opensource projects

Example 46 with AudioRecord

use of android.media.AudioRecord in project cythara by gstraube.

the class AudioDispatcherFactory method fromDefaultMicrophone.

/**
 * Create a new AudioDispatcher connected to the default microphone.
 *
 * @param sampleRate
 *            The requested sample rate.
 * @param audioBufferSize
 *            The size of the audio buffer (in samples).
 *
 * @param bufferOverlap
 *            The size of the overlap (in samples).
 * @return A new AudioDispatcher
 */
public static AudioDispatcher fromDefaultMicrophone(final int sampleRate, final int audioBufferSize, final int bufferOverlap) {
    int minAudioBufferSize = AudioRecord.getMinBufferSize(sampleRate, android.media.AudioFormat.CHANNEL_IN_MONO, android.media.AudioFormat.ENCODING_PCM_16BIT);
    int minAudioBufferSizeInSamples = minAudioBufferSize / 2;
    if (minAudioBufferSizeInSamples <= audioBufferSize) {
        AudioRecord audioInputStream = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, android.media.AudioFormat.CHANNEL_IN_MONO, android.media.AudioFormat.ENCODING_PCM_16BIT, audioBufferSize * 2);
        TarsosDSPAudioFormat format = new TarsosDSPAudioFormat(sampleRate, 16, 1, true, false);
        TarsosDSPAudioInputStream audioStream = new AndroidAudioInputStream(audioInputStream, format);
        // start recording ! Opens the stream.
        audioInputStream.startRecording();
        return new AudioDispatcher(audioStream, audioBufferSize, bufferOverlap);
    } else {
        throw new IllegalArgumentException("Buffer size too small should be at least " + (minAudioBufferSize * 2));
    }
}

Example 47 with AudioRecord

use of android.media.AudioRecord in project CameraView by CJT2325.

the class CheckPermission method getRecordState.

/**
 * 用于检测是否具有录音权限
 *
 * @return
 */
public static int getRecordState() {
    int minBuffer = AudioRecord.getMinBufferSize(44100, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT);
    AudioRecord audioRecord = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, 44100, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, (minBuffer * 100));
    short[] point = new short[minBuffer];
    int readSize = 0;
    try {
        // 检测是否可以进入初始化状态
        audioRecord.startRecording();
    } catch (Exception e) {
        if (audioRecord != null) {
            audioRecord.release();
            audioRecord = null;
        }
        return STATE_NO_PERMISSION;
    }
    if (audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
        // 检测是否在录音中
        if (audioRecord != null) {
            audioRecord.stop();
            audioRecord.release();
            audioRecord = null;
            Log.d("CheckAudioPermission", "录音机被占用");
        }
        return STATE_RECORDING;
    } else {
        // 检测是否可以获取录音结果
        readSize = audioRecord.read(point, 0, point.length);
        if (readSize <= 0) {
            if (audioRecord != null) {
                audioRecord.stop();
                audioRecord.release();
                audioRecord = null;
            }
            Log.d("CheckAudioPermission", "录音的结果为空");
            return STATE_NO_PERMISSION;
        } else {
            if (audioRecord != null) {
                audioRecord.stop();
                audioRecord.release();
                audioRecord = null;
            }
            return STATE_SUCCESS;
        }
    }
}

Example 48 with AudioRecord

use of android.media.AudioRecord in project speechutils by Kaljurand.

the class SpeechAudioRecord method create.

@RequiresPermission(RECORD_AUDIO)
public static AudioRecord create(int audioSource, int sampleRateInHz, int channelConfig, int audioFormat, int bufferSizeInBytes, boolean noise, boolean gain, boolean echo) throws IllegalArgumentException, SecurityException {
    // TODO: setPrivacySensitive(true) if API 30+
    AudioRecord audioRecord = new AudioRecord.Builder().setAudioSource(audioSource).setAudioFormat(new AudioFormat.Builder().setEncoding(audioFormat).setSampleRate(sampleRateInHz).setChannelMask(channelConfig).build()).setBufferSizeInBytes(bufferSizeInBytes).build();
    int audioSessionId = audioRecord.getAudioSessionId();
    if (noise) {
        if (NoiseSuppressor.create(audioSessionId) == null) {
            Log.i("NoiseSuppressor: failed");
        } else {
            Log.i("NoiseSuppressor: ON");
        }
    } else {
        Log.i("NoiseSuppressor: OFF");
    }
    if (gain) {
        if (AutomaticGainControl.create(audioSessionId) == null) {
            Log.i("AutomaticGainControl: failed");
        } else {
            Log.i("AutomaticGainControl: ON");
        }
    } else {
        Log.i("AutomaticGainControl: OFF");
    }
    if (echo) {
        if (AcousticEchoCanceler.create(audioSessionId) == null) {
            Log.i("AcousticEchoCanceler: failed");
        } else {
            Log.i("AcousticEchoCanceler: ON");
        }
    } else {
        Log.i("AcousticEchoCanceler: OFF");
    }
    return audioRecord;
}

Example 49 with AudioRecord

use of android.media.AudioRecord in project storymaker by StoryMaker.

the class AudioRecorderView method startRecording.

public void startRecording() {
    // mTempFile = new File(mContext.getExternalFilesDir(null),AUDIO_RECORDER_TEMP_FILE);
    mTempFile = new File(StorageHelper.getActualStorageDirectory(mContext), AUDIO_RECORDER_TEMP_FILE);
    if (mTempFile.exists())
        mTempFile.delete();
    recorder = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, mAudioSampleRate, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, bufferSize);
    /*
		livePlayer =  new AudioTrack( AudioManager.STREAM_MUSIC, mAudioSampleRate, 
				RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, 
				bufferSize, AudioTrack.MODE_STREAM);
		*/
    recorder.startRecording();
    isRecording = true;
    recordingThread = new Thread(new Runnable() {

        @Override
        public void run() {
            writeAudioDataToFile();
        }
    }, "AudioRecorder Thread");
    recordingThread.start();
}

Example 50 with AudioRecord

use of android.media.AudioRecord in project storymaker by StoryMaker.

the class ExtAudioRecorder method reset.

/**
 * Resets the recorder to the INITIALIZING state, as if it was just created.
 * In case the class was in RECORDING state, the recording is stopped.
 * In case of exceptions the class is set to the ERROR state.
 */
public void reset() {
    try {
        if (state != State.ERROR) {
            release();
            // Reset file path
            filePath = null;
            // Reset amplitude
            cAmplitude = 0;
            if (rUncompressed) {
                audioRecorder = new AudioRecord(aSource, sRate, nChannels + 1, aFormat, bufferSize);
            } else {
                mediaRecorder = new MediaRecorder();
                mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
                mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
                mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
            }
            state = State.INITIALIZING;
        }
    } catch (Exception e) {
        Timber.e(e.getMessage());
        state = State.ERROR;
    }
}