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@niusounds
Last active March 31, 2024 17:22
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AudioInputStream and AudioOutputStream for Android. These wrap AudioRecord and AudioTrack.
import android.media.AudioFormat
import android.media.AudioRecord
import android.media.MediaRecorder
import java.io.IOException
import java.io.InputStream
class AudioInputStream(
audioSource: Int = MediaRecorder.AudioSource.DEFAULT,
sampleRate: Int = 44100,
channelConfig: Int = AudioFormat.CHANNEL_IN_MONO,
audioFormat: Int = AudioFormat.ENCODING_PCM_8BIT,
bufferSizeInBytes: Int = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat)) : InputStream() {
private val audioRecord = AudioRecord(audioSource, sampleRate, channelConfig, audioFormat, bufferSizeInBytes).apply {
startRecording()
}
@Deprecated("Use read(audioData, offset, length)")
@Throws(IOException::class)
override fun read(): Int {
val tmp = byteArrayOf(0)
read(tmp, 0, 1)
return tmp[0].toInt()
}
@Throws(IOException::class)
override fun read(audioData: ByteArray, offset: Int, length: Int): Int {
try {
return audioRecord.read(audioData, offset, length)
} catch (e: Exception) {
throw IOException(e)
}
}
override fun close() {
audioRecord.stop()
audioRecord.release()
super.close()
}
}
import android.media.AudioFormat
import android.media.AudioManager
import android.media.AudioTrack
import java.io.IOException
import java.io.OutputStream
class AudioOutputStream(
streamType: Int = AudioManager.STREAM_MUSIC,
sampleRate: Int = 44100,
channelConfig: Int = AudioFormat.CHANNEL_OUT_MONO,
audioFormat: Int = AudioFormat.ENCODING_PCM_8BIT,
bufferSizeInBytes: Int = AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat)) : OutputStream() {
private val audioTrack = AudioTrack(streamType, sampleRate, channelConfig, audioFormat, bufferSizeInBytes, AudioTrack.MODE_STREAM).apply {
play()
}
@Deprecated("Use write(audioData, offset, length)")
@Throws(IOException::class)
override fun write(b: Int) {
val tmp = byteArrayOf(0)
tmp[0] = b.toByte()
write(tmp, 0, 1)
}
@Throws(IOException::class)
override fun write(audioData: ByteArray, offset: Int, length: Int) {
try {
audioTrack.write(audioData, offset, length)
} catch (e: Exception) {
throw IOException(e)
}
}
override fun close() {
audioTrack.stop()
audioTrack.release()
super.close()
}
}
@Aleksandr-Melekhin
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Thanks a lot

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