AudioTrack을 이용한 짧은 파일 재생방법

출처: http://darksilber.tistory.com/61

소스파일: 

ExAudioPlay_SRC.zip

/**

 * 짧은 데이터 재생 (byte 배열을 입력)

 */

private void PlayShortAudioData(byte[] byteData) {

// Set and push to audio track..

int intSize = android.media.AudioTrack.getMinBufferSize(RECORDER_SAMPLERATE,

                                                                                AudioFormat.CHANNEL_CONFIGURATION_MONO,  

                                                                                AudioFormat.ENCODING_PCM_16BIT);

AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC, RECORDER_SAMPLERATE, 

AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, 

intSize, 

AudioTrack.MODE_STREAM);

if (at != null) {

at.play();

// Write the byte array to the track

at.write(byteData, 0, byteData.length);

at.stop();

at.release();

} 

}

// sdcard 파일경로 입력

private void PlayShortAudioFileViaAudioTrack(String filePath) throws IOException {

// We keep temporarily filePath globally as we have only two sample sounds now..

if (filePath == null)

return;

// Reading the file..

byte[] byteData = null;

File file = null;

file = new File(filePath); // for ex. path= "/sdcard/samplesound.pcm" or "/sdcard/samplesound.wav"

byteData = new byte[(int) file.length()];

FileInputStream in = null;

try {

in = new FileInputStream(file);

in.read(byteData);

in.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

}

// Set and push to audio track..

int intSize = android.media.AudioTrack.getMinBufferSize(48000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);

AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC, 48000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, intSize, AudioTrack.MODE_STREAM);

if (at != null) {

at.play();

// Write the byte array to the track

at.write(byteData, 0, byteData.length);

at.stop();

at.release();

} 

else {

Log.d("TCAudio", "audio track is not initialised ");

}

}