AudioTrack only supports raw PCM data -niko
On Sep 7, 7:20 am, OldSkoolMark <[email protected]> wrote: > Once you address the file not found issue, you will discover that > there is currently no API that allows you to read in audio files and > decode them into a format that AudioTrack understands. Try MediaPlayer > instead unless you really need to work at the sample level. > > On Sep 6, 6:52 pm, melo <[email protected]> wrote: > > > > > Hi all > > I'm an android starter > > I tused AudioTrack to play music > > But it just tell me filenotfoundexeception > > I try to play mp3 wav ogg (all in raw dir) > > I've no idea where is wrong? > > here are my code ~ > > Could any one tell me why? > > TKS in advance :) > > > public class mainActivity extends Activity > > { > > private static final String Tag = "audioRecorder"; > > private static final boolean log = true; > > > AudioTrack track = null; > > > /** Called when the activity is first created. */ > > @Override > > public void onCreate(Bundle savedInstanceState) > > { > > super.onCreate(savedInstanceState); > > setContentView(R.layout.main); > > > //if(AudioTrack.MODE_STATIC != mode && AudioTrack.MODE_STREAM ! > > = mode) > > //throw new InvalidParameterException(); > > > //String audioFilePath = "R.raw.music"; > > long fileSize = 0; > > long bytesWritten = 0; > > int bytesRead = 0; > > int bufferSize = 0; > > byte[] buffer; > > //AudioTrack track = null; > > int sampleRateHz = 8000;//22050 > > int audioFormat = AudioFormat.CHANNEL_CONFIGURATION_MONO; > > //int audioFormat = > > AudioFormat.CHANNEL_CONFIGURATION_STEREO; > > //int audioEncodingFormat= > > MediaRecorder.AudioEncoder.AMR_NB; > > int audioEncodingFormat= AudioFormat.ENCODING_PCM_16BIT; > > //int audioEncodingFormat= AudioFormat.ENCODING_PCM_8BIT; > > //int mode = AudioTrack.MODE_STATIC; > > int mode = AudioTrack.MODE_STREAM; > > > File audioFile = new File("R.raw.test.ogg"); > > fileSize = audioFile.length(); > > > if(log)Log.d(Tag,"Buffer size("+ mode +")"); > > if(AudioTrack.MODE_STREAM == mode) > > bufferSize = > > AudioTrack.getMinBufferSize(sampleRateHz,audioFormat,audioEncodingFormat); > > else //AudioTrack.MODE_STATIC > > bufferSize = (int)fileSize; > > > buffer = new byte[(int)bufferSize]; > > > if(log)Log.d(Tag,"track setting"); > > track = new > > AudioTrack(AudioManager.STREAM_MUSIC,sampleRateHz, > > audioFormat,audioEncodingFormat, > > bufferSize,mode); > > > // in stream mode, > > // 1. start track playback > > // 2. write data to track > > > if(AudioTrack.MODE_STREAM == mode) > > { > > if(log)Log.d(Tag,"MODE_STREAM:track.play()"); > > track.play(); > > } > > FileInputStream audioStream = null; > > try{ > > audioStream = new FileInputStream(audioFile);//"R.raw.music" > > }catch(FileNotFoundException e) { > > e.printStackTrace(); > > Log.e(Tag,"Error:" + e.toString()); > > } > > > if(log)Log.d(Tag,"audioStream read"); > > while(bytesWritten < fileSize) > > { > > try > > { > > bytesRead = audioStream.read(buffer,0,bufferSize); > > }catch(IOException e){ > > Log.e(Tag,"Error:" + e.toString()); > > } > > if(log)Log.d(Tag,"track write"); > > bytesWritten += track.write(buffer,0,bytesRead); > > } > > // in static mode, > > // 1. write data to track > > // 2. start track playback > > > if(AudioTrack.MODE_STATIC == mode) > > { > > if(log)Log.d(Tag,"MODE_STATIC:track.play()"); > > track.play(); > > } > > > } > > } -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
