--- /dev/null
+package org.libsdl.app;
+
+import android.media.*;
+import android.os.Build;
+import android.util.Log;
+
+public class SDLAudioManager
+{
+ protected static final String TAG = "SDLAudio";
+
+ protected static AudioTrack mAudioTrack;
+ protected static AudioRecord mAudioRecord;
+
+ public static void initialize() {
+ mAudioTrack = null;
+ mAudioRecord = null;
+ }
+
+ // Audio
+
+ protected static String getAudioFormatString(int audioFormat) {
+ switch (audioFormat) {
+ case AudioFormat.ENCODING_PCM_8BIT:
+ return "8-bit";
+ case AudioFormat.ENCODING_PCM_16BIT:
+ return "16-bit";
+ case AudioFormat.ENCODING_PCM_FLOAT:
+ return "float";
+ default:
+ return Integer.toString(audioFormat);
+ }
+ }
+
+ protected static int[] open(boolean isCapture, int sampleRate, int audioFormat, int desiredChannels, int desiredFrames) {
+ int channelConfig;
+ int sampleSize;
+ int frameSize;
+
+ Log.v(TAG, "Opening " + (isCapture ? "capture" : "playback") + ", requested " + desiredFrames + " frames of " + desiredChannels + " channel " + getAudioFormatString(audioFormat) + " audio at " + sampleRate + " Hz");
+
+ /* On older devices let's use known good settings */
+ if (Build.VERSION.SDK_INT < 21) {
+ if (desiredChannels > 2) {
+ desiredChannels = 2;
+ }
+ if (sampleRate < 8000) {
+ sampleRate = 8000;
+ } else if (sampleRate > 48000) {
+ sampleRate = 48000;
+ }
+ }
+
+ if (audioFormat == AudioFormat.ENCODING_PCM_FLOAT) {
+ int minSDKVersion = (isCapture ? 23 : 21);
+ if (Build.VERSION.SDK_INT < minSDKVersion) {
+ audioFormat = AudioFormat.ENCODING_PCM_16BIT;
+ }
+ }
+ switch (audioFormat)
+ {
+ case AudioFormat.ENCODING_PCM_8BIT:
+ sampleSize = 1;
+ break;
+ case AudioFormat.ENCODING_PCM_16BIT:
+ sampleSize = 2;
+ break;
+ case AudioFormat.ENCODING_PCM_FLOAT:
+ sampleSize = 4;
+ break;
+ default:
+ Log.v(TAG, "Requested format " + audioFormat + ", getting ENCODING_PCM_16BIT");
+ audioFormat = AudioFormat.ENCODING_PCM_16BIT;
+ sampleSize = 2;
+ break;
+ }
+
+ if (isCapture) {
+ switch (desiredChannels) {
+ case 1:
+ channelConfig = AudioFormat.CHANNEL_IN_MONO;
+ break;
+ case 2:
+ channelConfig = AudioFormat.CHANNEL_IN_STEREO;
+ break;
+ default:
+ Log.v(TAG, "Requested " + desiredChannels + " channels, getting stereo");
+ desiredChannels = 2;
+ channelConfig = AudioFormat.CHANNEL_IN_STEREO;
+ break;
+ }
+ } else {
+ switch (desiredChannels) {
+ case 1:
+ channelConfig = AudioFormat.CHANNEL_OUT_MONO;
+ break;
+ case 2:
+ channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
+ break;
+ case 3:
+ channelConfig = AudioFormat.CHANNEL_OUT_STEREO | AudioFormat.CHANNEL_OUT_FRONT_CENTER;
+ break;
+ case 4:
+ channelConfig = AudioFormat.CHANNEL_OUT_QUAD;
+ break;
+ case 5:
+ channelConfig = AudioFormat.CHANNEL_OUT_QUAD | AudioFormat.CHANNEL_OUT_FRONT_CENTER;
+ break;
+ case 6:
+ channelConfig = AudioFormat.CHANNEL_OUT_5POINT1;
+ break;
+ case 7:
+ channelConfig = AudioFormat.CHANNEL_OUT_5POINT1 | AudioFormat.CHANNEL_OUT_BACK_CENTER;
+ break;
+ case 8:
+ if (Build.VERSION.SDK_INT >= 23) {
+ channelConfig = AudioFormat.CHANNEL_OUT_7POINT1_SURROUND;
+ } else {
+ Log.v(TAG, "Requested " + desiredChannels + " channels, getting 5.1 surround");
+ desiredChannels = 6;
+ channelConfig = AudioFormat.CHANNEL_OUT_5POINT1;
+ }
+ break;
+ default:
+ Log.v(TAG, "Requested " + desiredChannels + " channels, getting stereo");
+ desiredChannels = 2;
+ channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
+ break;
+ }
+
+/*
+ Log.v(TAG, "Speaker configuration (and order of channels):");
+
+ if ((channelConfig & 0x00000004) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_FRONT_LEFT");
+ }
+ if ((channelConfig & 0x00000008) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_FRONT_RIGHT");
+ }
+ if ((channelConfig & 0x00000010) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_FRONT_CENTER");
+ }
+ if ((channelConfig & 0x00000020) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_LOW_FREQUENCY");
+ }
+ if ((channelConfig & 0x00000040) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_BACK_LEFT");
+ }
+ if ((channelConfig & 0x00000080) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_BACK_RIGHT");
+ }
+ if ((channelConfig & 0x00000100) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_FRONT_LEFT_OF_CENTER");
+ }
+ if ((channelConfig & 0x00000200) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_FRONT_RIGHT_OF_CENTER");
+ }
+ if ((channelConfig & 0x00000400) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_BACK_CENTER");
+ }
+ if ((channelConfig & 0x00000800) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_SIDE_LEFT");
+ }
+ if ((channelConfig & 0x00001000) != 0) {
+ Log.v(TAG, " CHANNEL_OUT_SIDE_RIGHT");
+ }
+*/
+ }
+ frameSize = (sampleSize * desiredChannels);
+
+ // Let the user pick a larger buffer if they really want -- but ye
+ // gods they probably shouldn't, the minimums are horrifyingly high
+ // latency already
+ int minBufferSize;
+ if (isCapture) {
+ minBufferSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);
+ } else {
+ minBufferSize = AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat);
+ }
+ desiredFrames = Math.max(desiredFrames, (minBufferSize + frameSize - 1) / frameSize);
+
+ int[] results = new int[4];
+
+ if (isCapture) {
+ if (mAudioRecord == null) {
+ mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, sampleRate,
+ channelConfig, audioFormat, desiredFrames * frameSize);
+
+ // see notes about AudioTrack state in audioOpen(), above. Probably also applies here.
+ if (mAudioRecord.getState() != AudioRecord.STATE_INITIALIZED) {
+ Log.e(TAG, "Failed during initialization of AudioRecord");
+ mAudioRecord.release();
+ mAudioRecord = null;
+ return null;
+ }
+
+ mAudioRecord.startRecording();
+ }
+
+ results[0] = mAudioRecord.getSampleRate();
+ results[1] = mAudioRecord.getAudioFormat();
+ results[2] = mAudioRecord.getChannelCount();
+ results[3] = desiredFrames;
+
+ } else {
+ if (mAudioTrack == null) {
+ mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate, channelConfig, audioFormat, desiredFrames * frameSize, AudioTrack.MODE_STREAM);
+
+ // Instantiating AudioTrack can "succeed" without an exception and the track may still be invalid
+ // Ref: https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/media/java/android/media/AudioTrack.java
+ // Ref: http://developer.android.com/reference/android/media/AudioTrack.html#getState()
+ if (mAudioTrack.getState() != AudioTrack.STATE_INITIALIZED) {
+ /* Try again, with safer values */
+
+ Log.e(TAG, "Failed during initialization of Audio Track");
+ mAudioTrack.release();
+ mAudioTrack = null;
+ return null;
+ }
+
+ mAudioTrack.play();
+ }
+
+ results[0] = mAudioTrack.getSampleRate();
+ results[1] = mAudioTrack.getAudioFormat();
+ results[2] = mAudioTrack.getChannelCount();
+ results[3] = desiredFrames;
+ }
+
+ Log.v(TAG, "Opening " + (isCapture ? "capture" : "playback") + ", got " + results[3] + " frames of " + results[2] + " channel " + getAudioFormatString(results[1]) + " audio at " + results[0] + " Hz");
+
+ return results;
+ }
+
+ /**
+ * This method is called by SDL using JNI.
+ */
+ public static int[] audioOpen(int sampleRate, int audioFormat, int desiredChannels, int desiredFrames) {
+ return open(false, sampleRate, audioFormat, desiredChannels, desiredFrames);
+ }
+
+ /**
+ * This method is called by SDL using JNI.
+ */
+ public static void audioWriteFloatBuffer(float[] buffer) {
+ if (mAudioTrack == null) {
+ Log.e(TAG, "Attempted to make audio call with uninitialized audio!");
+ return;
+ }
+
+ for (int i = 0; i < buffer.length;) {
+ int result = mAudioTrack.write(buffer, i, buffer.length - i, AudioTrack.WRITE_BLOCKING);
+ if (result > 0) {
+ i += result;
+ } else if (result == 0) {
+ try {
+ Thread.sleep(1);
+ } catch(InterruptedException e) {
+ // Nom nom
+ }
+ } else {
+ Log.w(TAG, "SDL audio: error return from write(float)");
+ return;
+ }
+ }
+ }
+
+ /**
+ * This method is called by SDL using JNI.
+ */
+ public static void audioWriteShortBuffer(short[] buffer) {
+ if (mAudioTrack == null) {
+ Log.e(TAG, "Attempted to make audio call with uninitialized audio!");
+ return;
+ }
+
+ for (int i = 0; i < buffer.length;) {
+ int result = mAudioTrack.write(buffer, i, buffer.length - i);
+ if (result > 0) {
+ i += result;
+ } else if (result == 0) {
+ try {
+ Thread.sleep(1);
+ } catch(InterruptedException e) {
+ // Nom nom
+ }
+ } else {
+ Log.w(TAG, "SDL audio: error return from write(short)");
+ return;
+ }
+ }
+ }
+
+ /**
+ * This method is called by SDL using JNI.
+ */
+ public static void audioWriteByteBuffer(byte[] buffer) {
+ if (mAudioTrack == null) {
+ Log.e(TAG, "Attempted to make audio call with uninitialized audio!");
+ return;
+ }
+
+ for (int i = 0; i < buffer.length; ) {
+ int result = mAudioTrack.write(buffer, i, buffer.length - i);
+ if (result > 0) {
+ i += result;
+ } else if (result == 0) {
+ try {
+ Thread.sleep(1);
+ } catch(InterruptedException e) {
+ // Nom nom
+ }
+ } else {
+ Log.w(TAG, "SDL audio: error return from write(byte)");
+ return;
+ }
+ }
+ }
+
+ /**
+ * This method is called by SDL using JNI.
+ */
+ public static int[] captureOpen(int sampleRate, int audioFormat, int desiredChannels, int desiredFrames) {
+ return open(true, sampleRate, audioFormat, desiredChannels, desiredFrames);
+ }
+
+ /** This method is called by SDL using JNI. */
+ public static int captureReadFloatBuffer(float[] buffer, boolean blocking) {
+ return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
+ }
+
+ /** This method is called by SDL using JNI. */
+ public static int captureReadShortBuffer(short[] buffer, boolean blocking) {
+ if (Build.VERSION.SDK_INT < 23) {
+ return mAudioRecord.read(buffer, 0, buffer.length);
+ } else {
+ return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
+ }
+ }
+
+ /** This method is called by SDL using JNI. */
+ public static int captureReadByteBuffer(byte[] buffer, boolean blocking) {
+ if (Build.VERSION.SDK_INT < 23) {
+ return mAudioRecord.read(buffer, 0, buffer.length);
+ } else {
+ return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
+ }
+ }
+
+ /** This method is called by SDL using JNI. */
+ public static void audioClose() {
+ if (mAudioTrack != null) {
+ mAudioTrack.stop();
+ mAudioTrack.release();
+ mAudioTrack = null;
+ }
+ }
+
+ /** This method is called by SDL using JNI. */
+ public static void captureClose() {
+ if (mAudioRecord != null) {
+ mAudioRecord.stop();
+ mAudioRecord.release();
+ mAudioRecord = null;
+ }
+ }
+
+ /** This method is called by SDL using JNI. */
+ public static void audioSetThreadPriority(boolean iscapture, int device_id) {
+ try {
+
+ /* Set thread name */
+ if (iscapture) {
+ Thread.currentThread().setName("SDLAudioC" + device_id);
+ } else {
+ Thread.currentThread().setName("SDLAudioP" + device_id);
+ }
+
+ /* Set thread priority */
+ android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_AUDIO);
+
+ } catch (Exception e) {
+ Log.v(TAG, "modify thread properties failed " + e.toString());
+ }
+ }
+
+ public static native int nativeSetupJNI();
+}
projects / rocksndiamonds.git / blobdiff