How do I playback an audio stream (not by URL)? - android

Say, I have an InputStream, providing audio/mpeg (or audio/aacp) - a Shoutcast radio.
Could somebody please show me a code example to playback such a stream?
I searched all over the internet, and it looks like the android.media.MediaPlayer can't playback a buffered stream. It can playback streams only via HTTP URL as DataSource.
Yes, there is a possibility to implement your own android.media.MediaDataSource and feed it to MediaPlayer.setDataSource(), but in case of audio/aacp the codec could not initialize.
Guess this could be done with OpenSL ES, but still I haven't found any example which would perform decoding from InputStream (not from URL), and then play back the output..
Come on guys! Any sample snippet in OpenSL ES decoding an input byte array and sending it to the audio output. Please!
Only one condition - input audio format should be obtained from the input stream.
The only one manual I found on OpenSL ES is Khronos OpenSL ES™ Registry, but that is not a reading for beginners at all. I'd rather die there searching for a proper "how-to" example... :(
Why is it so weird - it's very simple /though inconvenient/ (java), or it's very hard (NDK)? Why is there nothing in the middle?


your solution is something like this:
public void run() {
int buffersize = AudioRecord.getMinBufferSize(11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);
AudioTrack atrack = new AudioTrack(AudioManager.STREAM_MUSIC, 11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, buffersize, AudioTrack.MODE_STREAM);
atrack.setPlaybackRate(11025);
byte[] buffer = new byte[buffersize];
atrack.play();
while (isPlaying) {
yourStream.read(buffer, 0, buffersize);
atrack.write(buffer, 0, buffer.length);
}
}

Related

Using AudioTrack to play base64 encoded audio String (converted to byte array) just produces white noise

I am trying to playback base64 encoded .wav audio data on Android, via AudioTrack, and all I'm getting is a very short burst of white noise.
I presume it's in .wav format anyway - it was recorded via JavaScript using my Mac's built-in microphone and converted to base64.
I've possibly set the variables wrong when creating the AudioTrack (bit of guesswork involved there) - I've guessed at the sample rate and encoding, and put the buffer size as that of the entire chunk of data. Very grateful for any assistance.
playChannelAudio("data:application/octet-stream;base64,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");
private void playChannelAudio(String base64FormattedString) {
String strippedAudioData = base64FormattedString.substring(base64FormattedString.indexOf(',') + 1);
byte[] data = Base64.decode(strippedAudioData, Base64.DEFAULT);
AudioTrack audioTrack = new AudioTrack(
AudioManager.STREAM_MUSIC, 44100,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT,
data.length,
AudioTrack.MODE_STATIC);
audioTrack.write(data, 0, data.length);
audioTrack.play();
audioTrack.release();
}

Your audio data is encoded with Opus codec with a sample rate of 48000 Hz (detected by FFmpeg). You have given wrong sample rate as a parameter to the AudioTrack constructor (given 44100 but it's 48000) and also it's encoded with a codec, and AudioTrack expects raw/decoded PCM audio so it could be the reason for the white noise you are hearing. In order to play the audio correctly, first convert it to raw PCM audio data then encode it with Base64.

Android record audio as mono doesn't work

I want to record mono audio. I'm setting the AudioRecord param to be ENCODING_PCM_16BIT, but when I analyze the resulting file with Audacity, I see that it was actually recorded as stereo.
Relevant code:
bufferSizeInBytes = AudioRecord.getMinBufferSize(AudioFileFunc.AUDIO_SAMPLE_RATE,
AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT);
audioRecord = new AudioRecord(AudioFileFunc.AUDIO_INPUT, AudioFileFunc.AUDIO_SAMPLE_RATE,
AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSizeInBytes);
What's problem? Thanks for answering.

Decoding audio with Jspeex in android produces choppy/clipped sound

i am developing an android app, which plays live speex audio stream. So i used jspeex library .
The audio stream is 11khz,16 bit.
At android side i have done as follows:
SpeexDecoder decoder = new SpeexDecoder();
decoder.init(1, 11025,1, true);
decoder.processData(subdata, 0, subdata.length);
byte[] decoded_data = new byte[decoder.getProcessedDataByteSize()];
int result= decoder.getProcessedData(decoded_data, 0);
When this decoded data is played by Audiotrack , some part of audio is clipped.
Also when decoder is set to nb-mode( first parameter set to 0) the sound quality is worse.
I wonder there is any parameter configuration mistake in my code.
Any help, advice appreciated.
Thanks in advance.

Sampling rate and buffer size should be set in an optimized way for the specific device. For example you can use AudioRecord.getMinBufferSize() to obtain the best size for your buffer:
int sampleRate = 11025; //try also different standard sampleRate
int bufferSize = AudioRecord.getMinBufferSize(sampleRate,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT);
If your Audiotrack has a buffer which is too small or too large you will experience audio glitch. I suggest you to take a look here and play around with these values (sampleRate and bufferSize).

What codec is used for audiodata from AudioRecord.read() in android

Audio data is saved in the same way as here:
// 1. create AudioRecord instance
// 2. audioTrack.play();
// 3. in separate thread reading into buffer
// int bytesRead = audioRecord.read(buffer, 0, bufferSize);
// 4. save buffer to file
// fio.write(buffer, 0 , bytesRead);
// 4. audioTrack.stop();
What codec/format is used as saved file can't be opened as WAV file, but can be read and played using AudioTrack class?

No codec is used. It reads raw samples. If you want to save to .wav file you should first write a .wav header to file.Look at this example

No codec is used, if you are looking for some kind of codec, I advise you to try: MediaRecorder

Unable to play recorded raw PCM from file

I have saved recorded audio raw PCM into a file rxrawpcm.pcm, after that i tried to play the pcm file but unable to play recorded PCM? I didn't hear recorded voice hearing only a buzzy sound
Configuration
AudioRecorder and AudioTrack configuration
Stream Type :STREAM_VOICE_CALL
Sample Rate : 8000
Audio Format :PCM_16BIT
MODE :MODE_STREAM
Channel Config :CHANNEL_CONFIGURATION_MONO
Recording
byte[] buffer=new byte[1600];
int read = audioRecord.read(buffer, 0,buffer.length);
if(recordAudio){
if(out!=null){
out.write(buffer);
}
Player Side
FileInputStream fis=new FileInputStream(rxFile);
byte[] buffer=new byte[1600];
while(fis.read(buffer)!=-1){
audioPlayer.write(buffer, 0, buffer.length);
}

Your buffer size may be too small. You are supposed to use the getMinBufferSize method to determine the smallest buffer size that doesn't result in buffer overflows. The top voted answer in this question Android AudioRecord class - process live mic audio quickly, set up callback function demonstrates how to properly setup audio recording with an appropriate buffer size.

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