/** * OpenAL Helpers * * Copyright (c) 2011 by Chris Robinson * Copyright (c) 2013-2023 JogAmp Community * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.jogamp.openal.util; import com.jogamp.openal.AL; import com.jogamp.openal.ALConstants; import static com.jogamp.openal.ALConstants.*; import com.jogamp.openal.ALExt; import static com.jogamp.openal.ALExtConstants.*; import com.jogamp.common.av.AudioFormat; /* This class contains routines to help with some menial OpenAL-related tasks, * such as finding an audio format and getting readable strings for * channel configs and sample types. */ public class ALHelpers { /** * [openal-soft >= 1.18.0](https://github.com/kcat/openal-soft/blob/master/ChangeLog) * - Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data * extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS. */ public static final String AL_SOFT_buffer_samples = "AL_SOFT_buffer_samples"; // public static final String AL_SOFT_callback_buffer = "AL_SOFT_callback_buffer"; public static final String AL_SOFT_events = "AL_SOFT_events"; public static final String AL_EXT_MCFORMATS = "AL_EXT_MCFORMATS"; public static final String AL_EXT_FLOAT32 = "AL_EXT_FLOAT32"; public static final String AL_EXT_DOUBLE = "AL_EXT_DOUBLE"; public static final String ALC_EXT_thread_local_context = "ALC_EXT_thread_local_context"; /** * Returns a compatible {@link AudioFormat} based on given OpenAL channel-layout, sample-type and format, * as well as the generic sample-rate and sample-size. *

* The resulting {@link AudioFormat} uses {@link AudioFormat#planar} = false and {@link AudioFormat#littleEndian} = true. *

* @param alChannelLayout OpenAL channel layout * @param alSampleType OpenAL sample type * @param alFormat OpenAL format * @param sampleRate sample rate, e.g. 44100 * @param sampleSize sample size in bits, e.g. 16 * @return a new {@link AudioFormat} instance or null if parameter are not conclusive or invalid. */ public static AudioFormat getAudioFormat(final int alChannelLayout, final int alSampleType, final int alFormat, final int sampleRate, final int sampleSize) { if( ALConstants.AL_NONE == alChannelLayout || ALConstants.AL_NONE == alSampleType || ALConstants.AL_NONE == alFormat || 0 == sampleRate || 0 == sampleSize ) { return null; } final int channelCount = getALChannelLayoutChannelCount(alChannelLayout); if( 0 == channelCount ) { return null; } final boolean signed = isALSampleTypeSigned(alSampleType); final boolean fixedP = isALSampleTypeFixed(alSampleType); return new AudioFormat(sampleRate, sampleSize, channelCount, signed, fixedP, false /* planar */, true /* littleEndian */); } /** * Returns a compatible AL buffer format given the {@link AudioFormat}, * which determines the AL channel layout and AL sample type. *

*

* If hasEXTMcFormats or hasSOFTBufferSamples is true, * it will be called to find the closest-matching format from * AL_EXT_MCFORMATS or AL_SOFT_buffer_samples. *

*

* Returns {@link ALConstants#AL_NONE} if no supported format can be found. *

*

* Function uses {@link AL#alIsExtensionPresent(String)}, which might be context dependent, * otherwise function is context independent. *

* * @param audioFormat used to derive AL channel layout {@link #getDefaultALChannelLayout(int)} * and AL sample type {@link #getALSampleType(int, boolean, boolean)} * @param al AL instance * @param alExt ALExt instance * @return AL buffer format */ public static int getALFormat(final AudioFormat audioFormat, final AL al, final ALExt alExt) { final int alChannelLayout = ALHelpers.getDefaultALChannelLayout(audioFormat.channelCount); final int alSampleType = ALHelpers.getALSampleType(audioFormat.sampleSize, audioFormat.signed, audioFormat.fixedP); if( ALConstants.AL_NONE != alChannelLayout && ALConstants.AL_NONE != alSampleType ) { return ALHelpers.getALFormat(alChannelLayout, alSampleType, al, alExt); } else { return ALConstants.AL_NONE; } } /** * Returns a compatible AL buffer format given the {@link AudioFormat}, * which determines the AL channel layout and AL sample type. *

*

* If hasEXTMcFormats or hasSOFTBufferSamples is true, * it will be called to find the closest-matching format from * AL_EXT_MCFORMATS or AL_SOFT_buffer_samples. *

*

* Returns {@link ALConstants#AL_NONE} if no supported format can be found. *

*

* Function is context independent. *

* * @param audioFormat used to derive AL channel layout {@link #getDefaultALChannelLayout(int)} * and AL sample type {@link #getALSampleType(int, boolean, boolean)} * @param al AL instance * @param alExt ALExt instance * @param hasSOFTBufferSamples true if having extension AL_SOFT_buffer_samples, otherwise false * @param hasEXTMcFormats true if having extension AL_EXT_MCFORMATS, otherwise false * @param hasEXTFloat32 true if having extension AL_EXT_FLOAT32, otherwise false * @param hasEXTDouble true if having extension AL_EXT_DOUBLE, otherwise false * @return AL buffer format */ public static int getALFormat(final AudioFormat audioFormat, final AL al, final ALExt alExt, final boolean hasSOFTBufferSamples, final boolean hasEXTMcFormats, final boolean hasEXTFloat32, final boolean hasEXTDouble) { final int alChannelLayout = ALHelpers.getDefaultALChannelLayout(audioFormat.channelCount); final int alSampleType = ALHelpers.getALSampleType(audioFormat.sampleSize, audioFormat.signed, audioFormat.fixedP); final int alFormat; if( ALConstants.AL_NONE != alChannelLayout && ALConstants.AL_NONE != alSampleType ) { alFormat = ALHelpers.getALFormat(alChannelLayout, alSampleType, al, alExt, hasSOFTBufferSamples, hasEXTMcFormats, hasEXTFloat32, hasEXTDouble); } else { alFormat = ALConstants.AL_NONE; } return alFormat; } /** * Returns a compatible AL buffer format given the AL channel layout and AL sample type. *

* If hasEXTMcFormats or hasSOFTBufferSamples is true, * it will be called to find the closest-matching format from * AL_EXT_MCFORMATS or AL_SOFT_buffer_samples. *

*

* Returns {@link ALConstants#AL_NONE} if no supported format can be found. *

*

* Function uses {@link AL#alIsExtensionPresent(String)}, which might be context dependent, * otherwise function is context independent. *

* * @param alChannelLayout AL channel layout, see {@link #getDefaultALChannelLayout(int)} * @param alSampleType AL sample type, see {@link #getALSampleType(int, boolean, boolean)}. * @param al AL instance * @param alExt ALExt instance * @return AL buffer format */ public static final int getALFormat(final int alChannelLayout, final int alSampleType, final AL al, final ALExt alExt) { final boolean hasSOFTBufferSamples = al.alIsExtensionPresent(AL_SOFT_buffer_samples); final boolean hasEXTMcFormats = al.alIsExtensionPresent(AL_EXT_MCFORMATS); final boolean hasEXTFloat32 = al.alIsExtensionPresent(AL_EXT_FLOAT32); final boolean hasEXTDouble = al.alIsExtensionPresent(AL_EXT_DOUBLE); return ALHelpers.getALFormat(alChannelLayout, alSampleType, al, alExt, hasSOFTBufferSamples, hasEXTMcFormats, hasEXTFloat32, hasEXTDouble); } /** * Returns a compatible AL buffer format given the AL channel layout and AL sample type. *

* If hasEXTMcFormats or hasSOFTBufferSamples is true, * it will be called to find the closest-matching format from * AL_EXT_MCFORMATS or AL_SOFT_buffer_samples. *

*

* Returns {@link ALConstants#AL_NONE} if no supported format can be found. *

*

* Function is context independent. *

* * @param alChannelLayout AL channel layout, see {@link #getDefaultALChannelLayout(int)} * @param alSampleType AL sample type, see {@link #getALSampleType(int, boolean, boolean)}. * @param al AL instance * @param alExt ALExt instance * @param hasSOFTBufferSamples true if having extension AL_SOFT_buffer_samples, otherwise false * @param hasEXTMcFormats true if having extension AL_EXT_MCFORMATS, otherwise false * @param hasEXTFloat32 true if having extension AL_EXT_FLOAT32, otherwise false * @param hasEXTDouble true if having extension AL_EXT_DOUBLE, otherwise false * @return AL buffer format */ public static final int getALFormat(final int alChannelLayout, final int alSampleType, final AL al, final ALExt alExt, final boolean hasSOFTBufferSamples, final boolean hasEXTMcFormats, final boolean hasEXTFloat32, final boolean hasEXTDouble) { int format = AL_NONE; /* If using AL_SOFT_buffer_samples, try looking through its formats */ if(hasSOFTBufferSamples) { /* AL_SOFT_buffer_samples is more lenient with matching formats. The * specified sample type does not need to match the returned format, * but it is nice to try to get something close. */ if(alSampleType == AL_UNSIGNED_BYTE_SOFT || alSampleType == AL_BYTE_SOFT) { if(alChannelLayout == AL_MONO_SOFT) format = AL_MONO8_SOFT; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_STEREO8_SOFT; else if(alChannelLayout == AL_QUAD_SOFT) format = AL_QUAD8_SOFT; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_5POINT1_8_SOFT; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_6POINT1_8_SOFT; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_7POINT1_8_SOFT; } else if(alSampleType == AL_UNSIGNED_SHORT_SOFT || alSampleType == AL_SHORT_SOFT) { if(alChannelLayout == AL_MONO_SOFT) format = AL_MONO16_SOFT; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_STEREO16_SOFT; else if(alChannelLayout == AL_QUAD_SOFT) format = AL_QUAD16_SOFT; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_5POINT1_16_SOFT; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_6POINT1_16_SOFT; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_7POINT1_16_SOFT; } else if(alSampleType == AL_UNSIGNED_BYTE3_SOFT || alSampleType == AL_BYTE3_SOFT || alSampleType == AL_UNSIGNED_INT_SOFT || alSampleType == AL_INT_SOFT || alSampleType == AL_FLOAT_SOFT || alSampleType == AL_DOUBLE_SOFT) { if(alChannelLayout == AL_MONO_SOFT) format = AL_MONO32F_SOFT; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_STEREO32F_SOFT; else if(alChannelLayout == AL_QUAD_SOFT) format = AL_QUAD32F_SOFT; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_5POINT1_32F_SOFT; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_6POINT1_32F_SOFT; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_7POINT1_32F_SOFT; } if(format != AL_NONE && !alExt.alIsBufferFormatSupportedSOFT(format)) format = AL_NONE; /* A matching format was not found or supported. Try 32-bit float. */ if(format == AL_NONE) { if(alChannelLayout == AL_MONO_SOFT) format = AL_MONO32F_SOFT; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_STEREO32F_SOFT; else if(alChannelLayout == AL_QUAD_SOFT) format = AL_QUAD32F_SOFT; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_5POINT1_32F_SOFT; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_6POINT1_32F_SOFT; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_7POINT1_32F_SOFT; if(format != AL_NONE && !alExt.alIsBufferFormatSupportedSOFT(format)) format = AL_NONE; } /* 32-bit float not supported. Try 16-bit int. */ if(format == AL_NONE) { if(alChannelLayout == AL_MONO_SOFT) format = AL_MONO16_SOFT; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_STEREO16_SOFT; else if(alChannelLayout == AL_QUAD_SOFT) format = AL_QUAD16_SOFT; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_5POINT1_16_SOFT; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_6POINT1_16_SOFT; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_7POINT1_16_SOFT; if(format != AL_NONE && !alExt.alIsBufferFormatSupportedSOFT(format)) format = AL_NONE; } /* 16-bit int not supported. Try 8-bit int. */ if(format == AL_NONE) { if(alChannelLayout == AL_MONO_SOFT) format = AL_MONO8_SOFT; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_STEREO8_SOFT; else if(alChannelLayout == AL_QUAD_SOFT) format = AL_QUAD8_SOFT; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_5POINT1_8_SOFT; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_6POINT1_8_SOFT; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_7POINT1_8_SOFT; if(format != AL_NONE && !alExt.alIsBufferFormatSupportedSOFT(format)) format = AL_NONE; } return format; } /* We use the AL_EXT_MCFORMATS extension to provide output of Quad, 5.1, * and 7.1 channel configs, AL_EXT_FLOAT32 for 32-bit float samples, and * AL_EXT_DOUBLE for 64-bit float samples. */ if(alSampleType == AL_UNSIGNED_BYTE_SOFT) { if(alChannelLayout == AL_MONO_SOFT) format = AL_FORMAT_MONO8; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_FORMAT_STEREO8; else if( hasEXTMcFormats ) { if(alChannelLayout == AL_QUAD_SOFT) format = AL_FORMAT_QUAD8; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_FORMAT_51CHN8; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_FORMAT_61CHN8; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_FORMAT_71CHN8; } } else if(alSampleType == AL_SHORT_SOFT) { if(alChannelLayout == AL_MONO_SOFT) format = AL_FORMAT_MONO16; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_FORMAT_STEREO16; else if( hasEXTMcFormats ) { if(alChannelLayout == AL_QUAD_SOFT) format = AL_FORMAT_QUAD16; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_FORMAT_51CHN16; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_FORMAT_61CHN16; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_FORMAT_71CHN16; } } else if(alSampleType == AL_FLOAT_SOFT && hasEXTFloat32) { if(alChannelLayout == AL_MONO_SOFT) format = AL_FORMAT_MONO_FLOAT32; else if(alChannelLayout == AL_STEREO_SOFT) format = AL_FORMAT_STEREO_FLOAT32; else if( hasEXTMcFormats ) { if(alChannelLayout == AL_QUAD_SOFT) format = AL_FORMAT_QUAD32; else if(alChannelLayout == AL_5POINT1_SOFT) format = AL_FORMAT_51CHN32; else if(alChannelLayout == AL_6POINT1_SOFT) format = AL_FORMAT_61CHN32; else if(alChannelLayout == AL_7POINT1_SOFT) format = AL_FORMAT_71CHN32; } } else if(alSampleType == AL_DOUBLE_SOFT && hasEXTDouble) { if(alChannelLayout == AL_MONO_SOFT) format = AL_FORMAT_MONO_DOUBLE_EXT; else if(alChannelLayout == AL_STEREO_SOFT) { format = AL_FORMAT_STEREO_DOUBLE_EXT; } } /* NOTE: It seems OSX returns -1 from alGetEnumValue for unknown enums, as * opposed to 0. Correct it. */ if(format == -1) { format = AL_NONE; } return format; } /** * Returns the default AL channel layout matching the given channel count, or {@link ALConstants#AL_NONE}. * @param channelCount number of channels * @param signed true if signed number, false for unsigned * @param fixedP true for fixed point value, false for floating point value with a sampleSize of 32 (float) or 64 (double) */ public static final int getDefaultALChannelLayout(final int channelCount) { switch(channelCount) { case 1: return AL_MONO_SOFT; case 2: return AL_STEREO_SOFT; // case 2: return AL_REAR_SOFT; case 4: return AL_QUAD_SOFT; case 6: return AL_5POINT1_SOFT; case 7: return AL_6POINT1_SOFT; case 8: return AL_7POINT1_SOFT; } return AL_NONE; } /** * Returns the readable name of the given AL channel layout */ public static final String alChannelLayoutName(final int alChannelLayout) { switch(alChannelLayout) { case AL_MONO_SOFT: return "Mono"; case AL_STEREO_SOFT: return "Stereo"; case AL_REAR_SOFT: return "Rear"; case AL_QUAD_SOFT: return "Quad"; case AL_5POINT1_SOFT: return "5.1"; case AL_6POINT1_SOFT: return "6.1"; case AL_7POINT1_SOFT: return "7.1"; } return "Unknown AL-Channel-Layout 0x"+Integer.toHexString(alChannelLayout); } /** * Returns the channel count of the given AL channel layout */ public static final int getALChannelLayoutChannelCount(final int alChannelLayout) { switch(alChannelLayout) { case AL_MONO_SOFT: return 1; case AL_STEREO_SOFT: return 2; case AL_REAR_SOFT: return 2; case AL_QUAD_SOFT: return 4; case AL_5POINT1_SOFT: return 6; case AL_6POINT1_SOFT: return 7; case AL_7POINT1_SOFT: return 8; } return 0; } /** * Returns the AL sample type matching the given audio type attributes, or {@link ALConstants#AL_NONE}. * @param sampleSize sample size in bits * @param signed true if signed number, false for unsigned * @param fixedP true for fixed point value, false for floating point value with a sampleSize of 32 (float) or 64 (double) */ public static final int getALSampleType(final int sampleSize, final boolean signed, final boolean fixedP) { if( fixedP ) { if( signed ) { switch( sampleSize ) { case 8: return AL_BYTE_SOFT; case 16: return AL_SHORT_SOFT; case 32: return AL_INT_SOFT; } } else { switch( sampleSize ) { case 8: return AL_UNSIGNED_BYTE_SOFT; case 16: return AL_UNSIGNED_SHORT_SOFT; case 32: return AL_UNSIGNED_INT_SOFT; } } } else { if( signed ) { switch( sampleSize ) { case 32: return AL_FLOAT_SOFT; case 64: return AL_DOUBLE_SOFT; } } } return AL_NONE; } /** * Returns the readable name of the given AL sample type */ public static final String alSampleTypeName(final int alSampleType) { switch(alSampleType) { case AL_BYTE_SOFT: return "s8"; case AL_UNSIGNED_BYTE_SOFT: return "u8"; case AL_SHORT_SOFT: return "s16"; case AL_UNSIGNED_SHORT_SOFT: return "u16"; case AL_INT_SOFT: return "s32"; case AL_UNSIGNED_INT_SOFT: return "u32"; case AL_FLOAT_SOFT: return "f32"; case AL_DOUBLE_SOFT: return "f64"; } return "Unknown AL-Type 0x"+Integer.toHexString(alSampleType); } /** * Returns whether the given AL sample type is signed */ public static final boolean isALSampleTypeSigned(final int alSampleType) { switch(alSampleType) { case AL_BYTE_SOFT: case AL_SHORT_SOFT: case AL_INT_SOFT: case AL_FLOAT_SOFT: case AL_DOUBLE_SOFT: return true; case AL_UNSIGNED_BYTE_SOFT: case AL_UNSIGNED_SHORT_SOFT: case AL_UNSIGNED_INT_SOFT: default: return false; } } /** * Returns true if the given AL sample type is a fixed point (byte, short, int, ..) * or false if a floating point type (float, double). */ public static final boolean isALSampleTypeFixed(final int alSampleType) { switch(alSampleType) { case AL_BYTE_SOFT: case AL_SHORT_SOFT: case AL_INT_SOFT: case AL_UNSIGNED_BYTE_SOFT: case AL_UNSIGNED_SHORT_SOFT: case AL_UNSIGNED_INT_SOFT: return true; case AL_FLOAT_SOFT: case AL_DOUBLE_SOFT: default: return false; } } /** * Returns the byte size of the given AL sample type * @throws IllegalArgumentException for unknown alChannelLayout or alSampleType values. */ public static final int sizeOfALSampleType(final int alSampleType) throws IllegalArgumentException { switch(alSampleType) { case AL_BYTE_SOFT: case AL_UNSIGNED_BYTE_SOFT: return 1; case AL_SHORT_SOFT: case AL_UNSIGNED_SHORT_SOFT: return 2; case AL_INT_SOFT: case AL_UNSIGNED_INT_SOFT: case AL_FLOAT_SOFT: return 4; case AL_DOUBLE_SOFT: return 8; default: throw new IllegalArgumentException("Unknown al-type 0x"+Integer.toHexString(alSampleType)); } } /** * @param sampleCount number of samples per channel * @param alChannelLayout AL channel layout * @param alSampleType AL sample type * @return bytes count required * @throws IllegalArgumentException for unknown alChannelLayout or alSampleType values. */ public static final int samplesToByteCount(int sampleCount, final int alChannelLayout, final int alSampleType) throws IllegalArgumentException { switch(alChannelLayout) { case AL_MONO_SOFT: sampleCount *= 1; break; case AL_STEREO_SOFT: sampleCount *= 2; break; case AL_REAR_SOFT: sampleCount *= 2; break; case AL_QUAD_SOFT: sampleCount *= 4; break; case AL_5POINT1_SOFT: sampleCount *= 6; break; case AL_6POINT1_SOFT: sampleCount *= 7; break; case AL_7POINT1_SOFT: sampleCount *= 8; break; default: throw new IllegalArgumentException("Unknown al-channel-layout 0x"+Integer.toHexString(alChannelLayout)); } switch(alSampleType) { case AL_BYTE_SOFT: case AL_UNSIGNED_BYTE_SOFT: break; case AL_SHORT_SOFT: case AL_UNSIGNED_SHORT_SOFT: sampleCount *= 2; break; case AL_INT_SOFT: case AL_UNSIGNED_INT_SOFT: case AL_FLOAT_SOFT: sampleCount *= 4; break; case AL_DOUBLE_SOFT: sampleCount *= 8; break; default: throw new IllegalArgumentException("Unknown al-type 0x"+Integer.toHexString(alSampleType)); } return sampleCount; } public static final int bytesToSampleCount(final int byteCount, final int alChannelLayout, final int alSampleType) { return byteCount / samplesToByteCount(1, alChannelLayout, alSampleType); } /** Returns given {@link ALConstants#AL_SOURCE_STATE} {@link AL#alGetSourcei(int, int, int[], int)}} value as a string. */ public static final String alSourceStateString(final int sourceState) { switch( sourceState ) { case AL_INITIAL: return "initial"; case AL_PLAYING: return "playing"; case AL_PAUSED: return "paused"; case AL_STOPPED: return "stopped"; default: return "invalid"; } } /** public static final String alConstantString(final int state) { switch(state) { case AL_ILLEGAL_COMMAND: return ""; case AL_PROCESSED: return ""; case AL_FREQUENCY: return ""; case AL_NO_ERROR: return ""; case AL_VENDOR: return ""; case AL_STATIC: return ""; // case AL_INVALID_ENUM: return ""; case AL_MAX_DISTANCE: return ""; case AL_ROLLOFF_FACTOR: return ""; case AL_GAIN: return ""; case AL_SIZE: return ""; case AL_DISTANCE_MODEL: return ""; case AL_BYTE_OFFSET: return ""; case AL_SOURCE_STATE: return ""; case AL_STOPPED: return ""; case AL_REFERENCE_DISTANCE: return ""; case AL_MIN_GAIN: return ""; case AL_PLAYING: return ""; case AL_INVERSE_DISTANCE_CLAMPED: return ""; case AL_PITCH: return ""; case AL_OUT_OF_MEMORY: return ""; case AL_FORMAT_MONO8: return ""; case AL_TRUE: return ""; case AL_LINEAR_DISTANCE: return ""; case AL_LOOPING: return ""; case AL_STREAMING: return ""; case AL_EXPONENT_DISTANCE_CLAMPED: return ""; case AL_CHANNELS: return ""; case AL_PAUSED: return ""; case AL_CONE_OUTER_GAIN: return ""; case AL_INVERSE_DISTANCE: return ""; case AL_ILLEGAL_ENUM: return ""; case AL_DIRECTION: return ""; // case AL_INVALID_OPERATION: return ""; case AL_ORIENTATION: return ""; case AL_FORMAT_STEREO8: return ""; case AL_CONE_OUTER_ANGLE: return ""; case AL_DOPPLER_VELOCITY: return ""; case AL_RENDERER: return ""; case AL_SAMPLE_OFFSET: return ""; case AL_FORMAT_STEREO16: return ""; case AL_SEC_OFFSET: return ""; case AL_POSITION: return ""; case AL_PENDING: return ""; case AL_UNUSED: return ""; case AL_INVALID_VALUE: return ""; // case AL_NONE: return ""; case AL_BUFFER: return ""; case AL_BUFFERS_PROCESSED: return ""; case AL_VELOCITY: return ""; case AL_DOPPLER_FACTOR: return ""; case AL_MAX_GAIN: return ""; case AL_SPEED_OF_SOUND: return ""; case AL_UNDETERMINED: return ""; case AL_EXTENSIONS: return ""; case AL_EXPONENT_DISTANCE: return ""; case AL_INVALID: return ""; case AL_VERSION: return ""; case AL_INITIAL: return ""; case AL_BUFFERS_QUEUED: return ""; case AL_BITS: return ""; case AL_CONE_INNER_ANGLE: return ""; case AL_SOURCE_RELATIVE: return ""; case AL_SOURCE_TYPE: return ""; case AL_LINEAR_DISTANCE_CLAMPED: return ""; case AL_FORMAT_MONO16: return ""; // case AL_FALSE: return ""; case AL_INVALID_NAME: return ""; default: return "0x"+Integer.toHexString(state); } } */ }