audiotrack

I have a streaming music application that can play two streams simultaneously by using two separate services utilizing one AudioTrack each, on their own threads. Now I'd like to able to play more than two streams, and I guess having more services is not the way to go. Is it possible to have a single service having dynamically instantiated AudioTracks? How can I implement separate threads for each of the AudioTrack instances? How will I access the dynamically instantiated AudioTracks? 来源： https://stackoverflow.com/questions/27493521/multiple-audiotrack-instances-and-threads-in-a-single-service

I'm trying to stream music in using AudioTrack. The track plays, but the audio plays at half the rate. It's like the song has become slow motion. try{ AudioTrack track= new AudioTrack( AudioManager.STREAM_MUSIC, 44100, android.media.AudioFormat.CHANNEL_CONFIGURATION_MONO, android.media.AudioFormat.ENCODING_PCM_16BIT, android.media.AudioTrack.getMinBufferSize( 44100, android.media.AudioFormat.CHANNEL_CONFIGURATION_STEREO, android.media.AudioFormat.ENCODING_PCM_16BIT ), AudioTrack.MODE_STREAM ); System.out.println("Min buffer: " + android.media.AudioTrack.getMinBufferSize( 44100, android.media

I'm trying to decode a mp3 file and stream it to AudioTrack. It all works fine but causes a lot of GC on the Java side. I've made sure to not allocate memory in my play/stream loop and blame ByteBuffer.Get(byte[], int, int) binding of allocating a temp Java array. Anyone can confirm and/or show a better way of feeding data from MediaCodec to AudioTrack? (I know API 21 introduced AudioTrack.write(ByteBuffer, ...)) Thanks Here is what I do: byte[] audioBuffer = new byte[...]; ... ByteBuffer codecOutputBuffer = codecOutputBuffers[outputIndex]; // The next line seems to be the source of a lot of

I cannot stop playback of an AudioTrack on a Nexus 4 running Android 5.0.1. Am I doing something wrong? The code is very simple (it's actually just a test app) and it works perfectly on devices running 2.3.6 and 4.4. Here's the relevant portion: mPlugReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if(Intent.ACTION_HEADSET_PLUG.equals(intent.getAction())) { boolean plugged = intent.getIntExtra("state", 0) == 1; if(plugged) { log.debug("audio device plugged"); boolean mic = intent.getIntExtra("microphone", 0) == 1; if(mic) { log.debug(

I am creating an Android app which requires the real time change of playback rate/speed. I have searched all over the internet and have seen many solutions including Tutorials for OpenSL ES for Android How to change audio tempo and pitch individuality using ffmpeg? As i am relatively new to development and android some of these are simply out of my leauge. Many of these examples talk about Soundpool but this api does not work with large files. After looking through API's and classes i found the method setPlaybackRate(int sampleRateInHz) under the AudioTrack class. http://developer.android.com

I am trying to implement AudioTrack to retrieve audio in my android device for incoming call from IAX but facing exception after some while . private void writeBuff(short[] buf) { try { if (this.track == null) { Log.w("IAX2Audio", "write() without an AudioTrack"); return; } int written = 0; while (written < buf.length) { if (this.track != null) { int res; res = this.track.write(buf, written, buf.length - written); switch (res) { case AudioTrack.ERROR_INVALID_OPERATION: Log.e("IAX2Audio", "Invalid write()"); return; case AudioTrack.ERROR_BAD_VALUE: Log.e("IAX2Audio", "Bad arguments to write()")