I am using superpowered sdk for playing audio files. For this I use
player->open("/storage/emulated/0/0567894638.mp3");
I also add permission READ_EXTERNAL_STORAGE.
The issue is, there is no errors displaying but can not play file. If I take this same file from assets then it is successfully playing. Please someone tell me what changes i do for play from internal storage?
String file_path = "/storage/emulated/0/kal.mp3";
File f = new File("" + file_path);
fileLength = (int) f.length();
Pair<Integer, Integer> deviceAudioInfo = getDeviceAudioInfo();
Integer sampleRate = deviceAudioInfo.first;
Integer bufferSize = deviceAudioInfo.second;
SuperpoweredExample(sampleRate, bufferSize, file_path, 0, fileLength);
SuperpoweredExample::SuperpoweredExample(unsigned int samplerate, unsigned int buffersize,
const char *path, int fileOffset, int fileLength) : volume(1.0f * headroom) {
stereoBuffer = (float *) memalign(16, (buffersize + 16) * sizeof(float) * 2);
player = new SuperpoweredAdvancedAudioPlayer(&player, NULL, samplerate, 0);
player->open(path);
audioSystem = new SuperpoweredAndroidAudioIO(samplerate, buffersize, false, true,
audioProcessing,
this, -1, SL_ANDROID_STREAM_MEDIA, buffersize * 2);
}
add permission READ_EXTERNAL_STORAGE
It Works now.I am trying to change the pitch and tampo with using Superpowered sdk.I was trying to fetch mp3 file from storage device of phone.I am using superpowered-ndk-example for doing my job.Below is the sample code.
this.binding.setPlaying(playing);
// Get the device's sample rate and buffer size to enable low-latency Android audio output, if available.
Pair<Integer, Integer> deviceAudioInfo = getDeviceAudioInfo();
Integer sampleRate = deviceAudioInfo.first;
Integer bufferSize = deviceAudioInfo.second;
Pair<Integer, Integer> trackLocationInfo = getTrackLocationInfo();
Integer fileOffset = trackLocationInfo.first;
Integer fileLength = trackLocationInfo.second;
String pat = "/storage/emulated/0/rec.wav";
// Arguments: path to the APK file, offset and length of the two resource files, sample rate, audio buffer size.
// this code works with assets
SuperpoweredExample(sampleRate, bufferSize, getPackageResourcePath(), fileOffset, fileLength);
//this code works for storage devices
SuperpoweredExample(sampleRate, bufferSize, pat, fileOffset, fileLength);
setupViews();
private void setupViews() {
binding.btnPlayPause.setOnClickListener((view) -> {
setPlaying(!playing);
});
binding.sbPitch.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
onPitchChanged(progress - 12);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
binding.sbTrackProgress.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
seekTo(progress);
if (progress == seekBar.getMax()) {
setPlaying(!playing);
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
seekTo(seekBar.getProgress() / 100.0f);
}
});
binding.radioGroup.check(binding.rbNormalTime.getId());
binding.radioGroup.setOnCheckedChangeListener((group, checkedId) -> {
switch (checkedId) {
case R.id.rb_slow_down:
onTempoSelected(TEMPO_HALF);
break;
case R.id.rb_normal_time:
onTempoSelected(TEMPO_NORMAL);
break;
case R.id.rb_speed_up:
onTempoSelected(TEMPO_DOUBLE);
break;
default:
onTempoSelected(TEMPO_NORMAL);
break;
}
});
}
private void setPlaying(boolean playing) {
this.playing = playing;
this.binding.setPlaying(this.playing);
onPlayPause(this.playing);
}
private Pair<Integer, Integer> getDeviceAudioInfo() {
String samplerateString;
String buffersizeString;
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
samplerateString = audioManager.getProperty(AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE);
buffersizeString = audioManager.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER);
if (samplerateString == null) samplerateString = "44100";
if (buffersizeString == null) buffersizeString = "512";
return new Pair<>(Integer.parseInt(samplerateString), Integer.parseInt(buffersizeString));
}
private Pair<Integer, Integer> getTrackLocationInfo() {
AssetFileDescriptor fd;
Pair<Integer, Integer> trackLocationInfo = null;
try {
fd = getTrackAsset();
int fileOffset = (int) fd.getStartOffset();
int fileLength = (int) fd.getLength();
trackLocationInfo = new Pair<>(fileOffset, fileLength);
} catch (IOException e) {
e.printStackTrace();
}
return trackLocationInfo;
}
private AssetFileDescriptor getTrackAsset() throws IOException {
return getAssets().openFd("kal.mp3");
}
private native void SuperpoweredExample(int samplerate, int buffersize, String apkPath,
int fileOffset, int fileLength);
private native void onPlayPause(boolean play);
private native void seekTo(double positionPercent);
private native void onPitchChanged(int pitchValue);
private native void onTempoSelected(int tempoValue);
public native String stringFromJNI();
This native methods are used in SuperpoweredExample.cpp file .in this Only one thing is changed than this
change player->open(path, fileOffset, fileLength); to player->open(path);
It works for changing pitch and tampo.