Android平台的录音放音实例代码，android放音,Android平台的录音
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Android平台的录音放音实例代码，android放音,Android平台的录音
Android平台的录音放音实例代码，快速开发基于录音回放的android软件完整工程代码下载请参见：http://drovik.com/html/3618921714.html
[Java]代码
public class RecorderTrack extends Activity { private String TAG = "session"; private RadioGroup mRadioGroup1,mRadioGroup2,mRadioGroup3; private RadioButton mRadio1,mRadio2,mRadio3,mRadio4,mRadio5,mRadio6,mRadio7; private static final int RECORDER_BPP = 16; //private static final String AUDIO_RECORDER_FILE_EXT_WAV = ".wav"; private static final String AUDIO_RECORDER_FOLDER = "AudioRecorder"; private static final String AUDIO_RECORDER_TEMP_FILE = "record_temp.raw"; private static int frequency = 44100; private static int channelConfiguration = AudioFormat.CHANNEL_IN_STEREO; private static int EncodingBitRate = AudioFormat.ENCODING_PCM_16BIT; private AudioRecord audioRecord = null; private AudioTrack audioTrack = null; private int recBufSize = 0; private int playBufSize = 0; private Thread recordingThread = null; private boolean isRecording = false; private boolean isTracking = false; private boolean m_keep_running; protected PCMAudioTrack m_player; SeekBar skbVolume;//调节音量 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setButtonHandlers(); enableButton1(false); } private void setButtonHandlers() { ((Button)findViewById(R.id.btnRecord)).setOnClickListener(btnClick); ((Button)findViewById(R.id.btnStop)).setOnClickListener(btnClick); ((Button)findViewById(R.id.btnTrack)).setOnClickListener(btnClick); ((Button)findViewById(R.id.btnStop2)).setOnClickListener(btnClick); //((Button)findViewById(R.id.btnExit)).setOnClickListener(btnClick); mRadioGroup1 = (RadioGroup) findViewById(R.id.myRadioGroup1); mRadioGroup2 = (RadioGroup) findViewById(R.id.myRadioGroup2); mRadioGroup3 = (RadioGroup) findViewById(R.id.myRadioGroup3); mRadio1 = (RadioButton) findViewById(R.id.myRadio1Button1); mRadio2 = (RadioButton) findViewById(R.id.myRadio1Button2); mRadio3 = (RadioButton) findViewById(R.id.myRadio2Button1); mRadio4 = (RadioButton) findViewById(R.id.myRadio2Button2); mRadio5 = (RadioButton) findViewById(R.id.myRadio2Button3); mRadio6 = (RadioButton) findViewById(R.id.myRadio3Button1); mRadio7 = (RadioButton) findViewById(R.id.myRadio3Button2); mRadioGroup1.setOnCheckedChangeListener(mChangeRadio1); mRadioGroup2.setOnCheckedChangeListener(mChangeRadio2); mRadioGroup3.setOnCheckedChangeListener(mChangeRadio3); } private void enableButton(int id,boolean isEnable){ ((Button)findViewById(id)).setEnabled(isEnable); } private void enableButton0(boolean isRecording) { enableButton(R.id.btnRecord,!isRecording); enableButton(R.id.btnTrack,!isRecording); enableButton(R.id.btnStop2,!isRecording); enableButton(R.id.btnStop,isRecording); } private void enableButton1(boolean isRecording) { enableButton(R.id.btnRecord,!isRecording); enableButton(R.id.btnTrack,isRecording); enableButton(R.id.btnStop2,isRecording); enableButton(R.id.btnStop,isRecording); } private void enableButton2(boolean isRecording) { enableButton(R.id.btnRecord,!isRecording); enableButton(R.id.btnTrack,!isRecording); enableButton(R.id.btnStop2,isRecording); enableButton(R.id.btnStop,isRecording); } private void enableButton3(boolean isTracking) { enableButton(R.id.btnRecord,!isTracking); enableButton(R.id.btnStop,!isTracking); enableButton(R.id.btnTrack,!isTracking); enableButton(R.id.btnStop2,isTracking); } private void enableButton4(boolean isTracking) { enableButton(R.id.btnRecord,!isTracking); enableButton(R.id.btnStop,isTracking); enableButton(R.id.btnTrack,!isTracking); enableButton(R.id.btnStop2,isTracking); } private String getFilename(){ String filepath = Environment.getExternalStorageDirectory().getAbsolutePath(); File file = new File(filepath,AUDIO_RECORDER_FOLDER); if(file.exists()){ file.delete(); } return (file.getAbsolutePath() + "/session.wav" ); } private String getTempFilename(){ String filepath = Environment.getExternalStorageDirectory().getPath(); File file = new File(filepath,AUDIO_RECORDER_FOLDER); if(!file.exists()){ file.mkdirs(); } File tempFile = new File(filepath,AUDIO_RECORDER_TEMP_FILE); if(tempFile.exists()) tempFile.delete(); return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_TEMP_FILE); } private void startRecording(){ createAudioRecord(); audioRecord.startRecording(); isRecording = true; recordingThread = new Thread(new Runnable() { @Override public void run() { writeAudioDataToFile(); } },"AudioRecorder Thread"); recordingThread.start(); } private void writeAudioDataToFile(){ byte data[] = new byte[recBufSize]; String filename = getTempFilename(); FileOutputStream os = null; try { os = new FileOutputStream(filename); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } int read = 0; if(null != os){ while(isRecording){ read = audioRecord.read(data, 0, recBufSize); if(AudioRecord.ERROR_INVALID_OPERATION != read){ try { os.write(data); } catch (IOException e) { e.printStackTrace(); } } } try { os.close(); } catch (IOException e) { e.printStackTrace(); } } } private void stopRecording(){ if(null != audioRecord){ isRecording = false; audioRecord.stop(); audioRecord.release(); audioRecord = null; recordingThread = null; } copyWaveFile(getTempFilename(),getFilename()); deleteTempFile(); } private void deleteTempFile() { File file = new File(getTempFilename()); file.delete(); } private void copyWaveFile(String inFilename,String outFilename){ FileInputStream in = null; FileOutputStream out = null; long totalAudioLen = 0; long totalDataLen = totalAudioLen + 36; long longSampleRate = frequency; int channels = 2; long byteRate = RECORDER_BPP * frequency * channels/8; byte[] data = new byte[recBufSize]; try { in = new FileInputStream(inFilename); out = new FileOutputStream(outFilename); totalAudioLen = in.getChannel().size(); totalDataLen = totalAudioLen + 36; AppLog.logString("File size: " + totalDataLen); WriteWaveFileHeader(out, totalAudioLen, totalDataLen, longSampleRate, channels, byteRate); while(in.read(data) != -1){ out.write(data); } in.close(); out.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } private void WriteWaveFileHeader( FileOutputStream out, long totalAudioLen, long totalDataLen, long longSampleRate, int channels, long byteRate) throws IOException { byte[] header = new byte[44]; header[0] = 'R'; // RIFF/WAVE header header[1] = 'I'; header[2] = 'F'; header[3] = 'F'; header[4] = (byte) (totalDataLen & 0xff); header[5] = (byte) ((totalDataLen >> 8) & 0xff); header[6] = (byte) ((totalDataLen >> 16) & 0xff); header[7] = (byte) ((totalDataLen >> 24) & 0xff); header[8] = 'W'; header[9] = 'A'; header[10] = 'V'; header[11] = 'E'; header[12] = 'f'; // 'fmt ' chunk header[13] = 'm'; header[14] = 't'; header[15] = ' '; header[16] = 16; // 4 bytes: size of 'fmt ' chunk header[17] = 0; header[18] = 0; header[19] = 0; header[20] = 1; // format = 1 header[21] = 0; header[22] = (byte) channels; header[23] = 0; header[24] = (byte) (longSampleRate & 0xff); header[25] = (byte) ((longSampleRate >> 8) & 0xff); header[26] = (byte) ((longSampleRate >> 16) & 0xff); header[27] = (byte) ((longSampleRate >> 24) & 0xff); header[28] = (byte) (byteRate & 0xff); header[29] = (byte) ((byteRate >> 8) & 0xff); header[30] = (byte) ((byteRate >> 16) & 0xff); header[31] = (byte) ((byteRate >> 24) & 0xff); header[32] = (byte) (2 * 16 / 8); // block align header[33] = 0; header[34] = RECORDER_BPP; // bits per sample header[35] = 0; header[36] = 'd'; header[37] = 'a'; header[38] = 't'; header[39] = 'a'; header[40] = (byte) (totalAudioLen & 0xff); header[41] = (byte) ((totalAudioLen >> 8) & 0xff); header[42] = (byte) ((totalAudioLen >> 16) & 0xff); header[43] = (byte) ((totalAudioLen >> 24) & 0xff); out.write(header, 0, 44); } private View.OnClickListener btnClick = new View.OnClickListener() { @Override public void onClick(View v) { switch(v.getId()){ case R.id.btnRecord:{ AppLog.logString("Start Recording"); enableButton0(true); startRecording(); break; } case R.id.btnStop:{ AppLog.logString("Start Recording"); enableButton2(false); stopRecording(); break; } case R.id.btnTrack:{ AppLog.logString("Start Tracking"); enableButton3(true); m_player = new PCMAudioTrack(); Log.i(TAG,"xxxxxxxxxxxxxxxxxxxxxxxxxxxx"); m_player.init(); m_player.start(); break; } case R.id.btnStop2:{ AppLog.logString("Stop Tracking"); enableButton4(false); m_player.free(); m_player = null; break; } } } }; public void createAudioRecord(){ recBufSize = AudioRecord.getMinBufferSize(frequency, channelConfiguration, EncodingBitRate); audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, frequency, channelConfiguration, EncodingBitRate, recBufSize); } public void createAudioTrack(){ playBufSize=AudioTrack.getMinBufferSize(frequency, channelConfiguration, EncodingBitRate); audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, frequency, channelConfiguration, EncodingBitRate, playBufSize, AudioTrack.MODE_STREAM); } class PCMAudioTrack extends Thread { protected byte[] m_out_bytes; final String FILE_PATH = "/sdcard/AudioRecorder/"; final String FILE_NAME = "session.wav"; File file; FileInputStream in; public void init() { try { file = new File(FILE_PATH , FILE_NAME); file.createNewFile(); in = new FileInputStream(file);// in.read(temp, 0, length); m_keep_running = true; createAudioTrack(); m_out_bytes = new byte[playBufSize]; } catch (Exception e) { e.printStackTrace(); } } public void free() { m_keep_running = false; try { Thread.sleep(1000); } catch (Exception e) { Log.d("sleep exceptions...\n", ""); } } public void run() { byte[] bytes_pkg = null; audioTrack.play(); while (m_keep_running) { try { in.read(m_out_bytes); bytes_pkg = m_out_bytes.clone(); audioTrack.write(bytes_pkg, 0, bytes_pkg.length); } catch (Exception e) { e.printStackTrace(); } } audioTrack.stop(); audioTrack = null; try { in.close(); } catch (IOException e) { e.printStackTrace(); } } } RadioGroup.OnCheckedChangeListener mChangeRadio1 = new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub if(checkedId==mRadio1.getId()) { channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_STEREO; } else if(checkedId==mRadio2.getId()) { channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO; } } }; RadioGroup.OnCheckedChangeListener mChangeRadio2 = new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub if(checkedId==mRadio3.getId()) { frequency = 44100; } else if(checkedId==mRadio4.getId()) { frequency = 22050; } else if(checkedId==mRadio5.getId()) { frequency = 11025; } } }; RadioGroup.OnCheckedChangeListener mChangeRadio3 = new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub if(checkedId==mRadio6.getId()) { EncodingBitRate = AudioFormat.ENCODING_PCM_16BIT; } else if(checkedId==mRadio7.getId()) { EncodingBitRate = AudioFormat.ENCODING_PCM_8BIT; } } }; @Override protected void onDestroy() { super.onDestroy(); android.os.Process.killProcess(android.os.Process.myPid()); }}
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