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AudioInputStream and AudioOutputStream for Android. These wrap AudioRecord and AudioTrack.
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| 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() | |
| } | |
| } |
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| 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() | |
| } | |
| } |
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