minor fmod cleanup

app/src/main/java/org/fmod/AudioDevice.kt

@@ -1,26 +1,32 @@
 package org.fmod
 
+import android.media.AudioAttributes
+import android.media.AudioFormat
+import android.media.AudioManager
 import android.media.AudioTrack
+import android.os.Build
 import android.util.Log
 
 class AudioDevice {
     private var mTrack: AudioTrack? = null
-    private fun fetchChannelConfigFromCount(i: Int): Int {
+    private fun fetchChannelConfigFromCount(speakerCount: Int): Int {
-        if (i == 1) {
+        return when (speakerCount) {
-            return 2
+            1 -> AudioFormat.CHANNEL_OUT_MONO
+            2 -> AudioFormat.CHANNEL_OUT_STEREO
+            6 -> AudioFormat.CHANNEL_OUT_5POINT1
+            8 -> AudioFormat.CHANNEL_OUT_7POINT1_SURROUND
+            else -> AudioFormat.CHANNEL_INVALID
         }
-        if (i == 2) {
-            return 3
-        }
-        if (i == 6) {
-            return 252
-        }
-        return if (i == 8) 6396 else 0
     }
 
-    fun init(i: Int, i2: Int, i3: Int, i4: Int): Boolean {
+    fun init(channelCount: Int, sampleRateInHz: Int, sampleSize: Int, sampleCount: Int): Boolean {
-        val fetchChannelConfigFromCount = fetchChannelConfigFromCount(i)
+        val channelConfig = fetchChannelConfigFromCount(channelCount)
-        val minBufferSize = AudioTrack.getMinBufferSize(i2, fetchChannelConfigFromCount, 2)
+        val minBufferSize = AudioTrack.getMinBufferSize(
+            sampleRateInHz,
+            channelConfig,
+            AudioFormat.ENCODING_PCM_16BIT
+        )
+
         if (minBufferSize < 0) {
             Log.w(
                 "fmod",
@@ -29,11 +35,33 @@ class AudioDevice {
         } else {
             Log.i("fmod", "AudioDevice::init : Min buffer size: $minBufferSize bytes")
         }
-        val i5 = i3 * i4 * i * 2
+
-        val i6 = if (i5 > minBufferSize) i5 else minBufferSize
+        val realBufferSize = sampleSize * sampleCount * channelCount * 2
-        Log.i("fmod", "AudioDevice::init : Actual buffer size: $i6 bytes")
+        val bufferSize = minBufferSize.coerceAtLeast(realBufferSize)
+        Log.i("fmod", "AudioDevice::init : Actual buffer size: $bufferSize bytes")
         return try {
-            val audioTrack = AudioTrack(3, i2, fetchChannelConfigFromCount, 2, i6, 1)
+            val attributes = AudioAttributes.Builder()
+                .setUsage(AudioAttributes.USAGE_GAME)
+                .build()
+
+            val format = AudioFormat.Builder()
+                .setChannelMask(channelConfig)
+                .setSampleRate(sampleRateInHz)
+                .setEncoding(AudioFormat.ENCODING_PCM_16BIT)
+                .build()
+
+            val audioTrackBuilder = AudioTrack.Builder()
+                .setAudioAttributes(attributes)
+                .setAudioFormat(format)
+                .setBufferSizeInBytes(bufferSize)
+                .setTransferMode(AudioTrack.MODE_STREAM)
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                audioTrackBuilder.setPerformanceMode(AudioTrack.PERFORMANCE_MODE_LOW_LATENCY)
+            }
+
+            val audioTrack = audioTrackBuilder.build()
+
             mTrack = audioTrack
             try {
                 audioTrack.play()
@@ -44,7 +72,7 @@ class AudioDevice {
                 mTrack = null
                 false
             }
-        } catch (unused2: IllegalArgumentException) {
+        } catch (_: IllegalArgumentException) {
             Log.e("fmod", "AudioDevice::init : AudioTrack creation caused IllegalArgumentException")
             false
         }
@@ -60,7 +88,7 @@ class AudioDevice {
         mTrack = null
     }
 
-    fun write(sArr: ShortArray?, i: Int) {
+    fun write(sArr: ShortArray, size: Int) {
-        mTrack!!.write(sArr!!, 0, i)
+        mTrack?.write(sArr, 0, size)
     }
 }

app/src/main/java/org/fmod/FMOD.kt

@@ -5,7 +5,9 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
+import android.content.pm.PackageManager
 import android.content.res.AssetManager
+import android.media.AudioDeviceInfo
 import android.media.AudioManager
 import android.net.Uri
 import android.os.Build
@@ -23,13 +25,11 @@ object FMOD {
     @JvmStatic
     fun init(context: Context?) {
         gContext = context
-        if (context != null) {
+        gContext?.registerReceiver(
-            gContext!!.registerReceiver(
             gPluginBroadcastReceiver,
-                IntentFilter("android.intent.action.HEADSET_PLUG")
+            IntentFilter(Intent.ACTION_HEADSET_PLUG)
         )
     }
-    }
 
     @JvmStatic
     fun close() {
@@ -65,22 +65,14 @@ object FMOD {
 
     @JvmStatic
     fun lowLatencyFlag(): Boolean {
-        if (Build.VERSION.SDK_INT < 5) {
-            return false
-        }
-
         val context = gContext ?: return false
-        return context.packageManager.hasSystemFeature("android.hardware.audio.low_latency")
+        return context.packageManager.hasSystemFeature(PackageManager.FEATURE_AUDIO_LOW_LATENCY)
     }
 
     @JvmStatic
     fun proAudioFlag(): Boolean {
-        if (Build.VERSION.SDK_INT < 5) {
-            return false
-        }
-
         val context = gContext ?: return false
-        return context.packageManager.hasSystemFeature("android.hardware.audio.pro")
+        return context.packageManager.hasSystemFeature(PackageManager.FEATURE_AUDIO_PRO)
     }
 
     @JvmStatic
@@ -90,26 +82,18 @@ object FMOD {
 
     @JvmStatic
     fun getOutputSampleRate(): Int {
-        if (Build.VERSION.SDK_INT < 17) {
-            return 0
-        }
-
         val context = gContext ?: return 0
         val audioService = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager
-        val property = audioService.getProperty("android.media.property.OUTPUT_SAMPLE_RATE")
+        val property = audioService.getProperty(AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE)
 
         return property?.toInt() ?: 0
     }
 
     @JvmStatic
     fun getOutputBlockSize(): Int {
-        if (Build.VERSION.SDK_INT < 17) {
-            return 0
-        }
-
         val context = gContext ?: return 0
         val audioService = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager
-        val property = audioService.getProperty("android.media.property.OUTPUT_FRAMES_PER_BUFFER")
+        val property = audioService.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER)
 
         return property?.toInt() ?: 0
     }
@@ -118,7 +102,11 @@ object FMOD {
     fun isBluetoothOn(): Boolean {
         val context = gContext ?: return false
         val audioManager = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager
-        return audioManager.isBluetoothA2dpOn || audioManager.isBluetoothScoOn
+
+        val devices = audioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS)
+        return devices.any {
+            it.type == AudioDeviceInfo.TYPE_BLUETOOTH_A2DP || it.type == AudioDeviceInfo.TYPE_BLUETOOTH_SCO
+        }
     }
 
     @JvmStatic

app/src/main/java/org/fmod/MediaCodec.kt

@@ -1,5 +1,6 @@
 package org.fmod
 
+import android.media.MediaCodec
 import android.media.MediaCrypto
 import android.media.MediaDataSource
 import android.media.MediaExtractor
@@ -14,8 +15,7 @@ class MediaCodec {
 
     var mCodecPtr: Long = 0
     private var mCurrentOutputBufferIndex = -1
-    private var mDataSourceProxy: Any? = null
+    private var mDecoder: MediaCodec? = null
-    private var mDecoder: android.media.MediaCodec? = null
     private var mExtractor: MediaExtractor? = null
     private var mInputBuffers: Array<ByteBuffer>? = null
     private var mInputFinished = false
@@ -57,7 +57,7 @@ class MediaCodec {
             )
             if (string == "audio/mp4a-latm") {
                 return try {
-                    mDecoder = android.media.MediaCodec.createDecoderByType(string)
+                    mDecoder = MediaCodec.createDecoderByType(string)
                     mExtractor!!.selectTrack(i2)
                     mDecoder!!.configure(trackFormat, null as Surface?, null as MediaCrypto?, 0)
                     mDecoder!!.start()
@@ -100,7 +100,7 @@ class MediaCodec {
         }
     }
 
-    fun read(bArr: ByteArray?, i: Int): Int {
+    fun read(bArr: ByteArray, i: Int): Int {
         var dequeueInputBuffer = 0
         val i2 =
             if (!mInputFinished || !mOutputFinished || mCurrentOutputBufferIndex != -1) 0 else -1
@@ -129,14 +129,14 @@ class MediaCodec {
                 mCurrentOutputBufferIndex = dequeueOutputBuffer
                 mOutputBuffers!![dequeueOutputBuffer].limit(bufferInfo.size)
                 mOutputBuffers!![dequeueOutputBuffer].position(bufferInfo.offset)
-            } else if (dequeueOutputBuffer == -3) {
+            } else if (dequeueOutputBuffer == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
                 mOutputBuffers = mDecoder!!.outputBuffers
-            } else if (dequeueOutputBuffer == -2) {
+            } else if (dequeueOutputBuffer == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
                 Log.d(
                     "fmod",
                     "MediaCodec::read : MediaCodec::dequeueOutputBuffer returned MediaCodec.INFO_OUTPUT_FORMAT_CHANGED " + mDecoder!!.outputFormat
                 )
-            } else if (dequeueOutputBuffer == -1) {
+            } else if (dequeueOutputBuffer == MediaCodec.INFO_TRY_AGAIN_LATER) {
                 Log.d(
                     "fmod",
                     "MediaCodec::read : MediaCodec::dequeueOutputBuffer returned MediaCodec.INFO_TRY_AGAIN_LATER."
@@ -147,7 +147,7 @@ class MediaCodec {
                     "MediaCodec::read : MediaCodec::dequeueOutputBuffer returned $dequeueOutputBuffer"
                 )
             }
-            if (bufferInfo.flags and 4 !== 0) {
+            if (bufferInfo.flags and MediaCodec.BUFFER_FLAG_END_OF_STREAM != 0) {
                 mOutputFinished = true
             }
         }
@@ -188,13 +188,15 @@ class MediaCodec {
         }
         val bArr = ByteArray(1024)
         while (i3 > 0) {
-            i3 -= read(bArr, Math.min(1024, i3))
+            i3 -= read(bArr, 1024.coerceAtMost(i3))
         }
     }
 
     companion object {
+        @JvmStatic
         external fun fmodGetSize(j: Long): Long
 
+        @JvmStatic
         external fun fmodReadAt(j: Long, j2: Long, bArr: ByteArray?, i: Int, i2: Int): Int
     }
 }