org.lwjgl.openal
Class AL10

java.lang.Object
  extended by org.lwjgl.openal.AL10

public final class AL10
extends java.lang.Object


This is the core OpenAL class. This class implements AL.h version 1.0

Version:
$Revision: 3412 $ $Id: AL10.java 3412 2010-09-26 23:43:24Z spasi $
Author:
Brian Matzon

Field Summary
static int AL_BITS
          Sound buffers: The number of bits per sample for the data contained in the buffer.
static int AL_BUFFER
          Indicate the buffer to provide sound samples.
static int AL_BUFFERS_PROCESSED
          Buffer Queue params
static int AL_BUFFERS_QUEUED
          Buffer Queue params
static int AL_CHANNEL_MASK
          Specify the channel mask.
static int AL_CHANNELS
          Sound buffers: The number of channels for the data contained in the buffer.
static int AL_CONE_INNER_ANGLE
          Directional source, inner cone angle, in degrees Range: [0-360] Default: 360
static int AL_CONE_OUTER_ANGLE
          Directional source, outer cone angle, in degrees.
static int AL_CONE_OUTER_GAIN
          Indicate the gain (volume amplification) applied.
static int AL_DATA
          Deprecated. This token is a relict of the early OpenAL days and is no longer supported. Neither the OpenAL spec nor OpenAL Soft define it.
static int AL_DIRECTION
          Specify the current direction as forward vector.
static int AL_DISTANCE_MODEL
          Distance model.
static int AL_DOPPLER_FACTOR
          Doppler scale.
static int AL_DOPPLER_VELOCITY
          Doppler velocity.
static int AL_EXTENSIONS
          Context strings: Extensions
static int AL_FALSE
          Boolean False
static int AL_FORMAT_MONO16
          Sound buffers: format specifier.
static int AL_FORMAT_MONO8
          Sound buffers: format specifier.
static int AL_FORMAT_STEREO16
          Sound buffers: format specifier.
static int AL_FORMAT_STEREO8
          Sound buffers: format specifier.
static int AL_FORMAT_VORBIS_EXT
          Ogg Vorbis format specifier.
static int AL_FREQUENCY
          Sound buffers: frequency, in units of Hertz [Hz].
static int AL_GAIN
          Indicate the gain (volume amplification) applied.
static int AL_INITIAL
          Source state information
static int AL_INVALID
          Bad value
static int AL_INVALID_ENUM
          Illegal enum passed as an argument to an AL call.
static int AL_INVALID_NAME
          Illegal name passed as an argument to an AL call.
static int AL_INVALID_OPERATION
          A function was called at inappropriate time, or in an inappropriate way, causing an illegal state.
static int AL_INVALID_VALUE
          Illegal value passed as an argument to an AL call.
static int AL_INVERSE_DISTANCE
          Distance model
static int AL_INVERSE_DISTANCE_CLAMPED
          Distance model
static int AL_LOOPING
          Indicate whether source has to loop infinite.
static int AL_MAX_DISTANCE
          Specify the maximum distance.
static int AL_MAX_GAIN
          Indicate maximum source attenuation.
static int AL_MIN_GAIN
          Indicate minimum source attenuation.
static int AL_NO_ERROR
          Errors: No Error.
static int AL_NONE
          Disable value
static int AL_ORIENTATION
          Specify the current orientation.
static int AL_OUT_OF_MEMORY
          A function could not be completed, because there is not enough memory available.
static int AL_PAUSED
          Source state information
static int AL_PENDING
          Buffer state.
static int AL_PITCH
          Specify the pitch to be applied, either at source, or on mixer results, at listener.
static int AL_PLAYING
          Source state information
static int AL_POSITION
          Specify the current location in three dimensional space.
static int AL_PROCESSED
          Buffer state.
static int AL_REFERENCE_DISTANCE
          Specify the current orientation.
static int AL_RENDERER
          Context strings: Renderer
static int AL_ROLLOFF_FACTOR
          Indicate the rolloff factor for the source.
static int AL_SIZE
          Sound buffers: Size in bytes of the buffer data.
static int AL_SOURCE_ABSOLUTE
          Indicate source has absolute coordinates
static int AL_SOURCE_RELATIVE
          Indicate Source has listener relative coordinates
static int AL_SOURCE_STATE
          Source state information
static int AL_SOURCE_TYPE
          Indicate the type of SOURCE.
static int AL_STOPPED
          Source state information
static int AL_TRUE
          Boolean True
static int AL_UNUSED
          Buffer state.
static int AL_VELOCITY
          Specify the current velocity in three dimensional space.
static int AL_VENDOR
          Context strings: Vendor
static int AL_VERSION
          Context strings: Version
 
Method Summary
static void alBufferData(int buffer, int format, java.nio.ByteBuffer data, int freq)
           A special case of Buffer state is the actual sound sample data stored in asociation with the Buffer.
static void alBufferData(int buffer, int format, java.nio.IntBuffer data, int freq)
           A special case of Buffer state is the actual sound sample data stored in asociation with the Buffer.
static void alBufferData(int buffer, int format, java.nio.ShortBuffer data, int freq)
           A special case of Buffer state is the actual sound sample data stored in asociation with the Buffer.
static void alDeleteBuffers(int buffer)
          Overloads alDeleteBuffers.
static void alDeleteBuffers(java.nio.IntBuffer buffers)
           The application requests deletion of a number of Buffers by calling DeleteBuffers.
static void alDeleteSources(int source)
          Overloads alDeleteSources.
static void alDeleteSources(java.nio.IntBuffer sources)
          The application requests deletion of a number of Sources by DeleteSources.
static void alDisable(int capability)
          The application can temporarily disable certain AL capabilities on a per Context basis.
static void alDistanceModel(int value)
           Samples usually use the entire dynamic range of the chosen format/encoding, independent of their real world intensity.
static void alDopplerFactor(float value)
          The Doppler Effect depends on the velocities of Source and Listener relative to the medium, and the propagation speed of sound in that medium.
static void alDopplerVelocity(float value)
          The Doppler Effect depends on the velocities of Source and Listener relative to the medium, and the propagation speed of sound in that medium.
static void alEnable(int capability)
          The application can temporarily disable certain AL capabilities on a per Context basis.
static int alGenBuffers()
          Overloads alGenBuffers.
static void alGenBuffers(java.nio.IntBuffer buffers)
          The application requests a number of Buffers using GenBuffers.
static int alGenSources()
          Overloads alGenSources.
static void alGenSources(java.nio.IntBuffer sources)
          The application requests a number of Sources using GenSources.
static boolean alGetBoolean(int pname)
          Like OpenGL, AL uses a simplified interface for querying global state.
static float alGetBufferf(int buffer, int pname)
          Buffer state is maintained inside the AL implementation and can be queried in full.
ALC_FREQUENCY - specified in samples per second, i.e.
static int alGetBufferi(int buffer, int pname)
          Buffer state is maintained inside the AL implementation and can be queried in full.
ALC_FREQUENCY - specified in samples per second, i.e.
static double alGetDouble(int pname)
          Like OpenGL, AL uses a simplified interface for querying global state.
static void alGetDouble(int pname, java.nio.DoubleBuffer data)
          Like OpenGL, AL uses a simplified interface for querying global state.
static int alGetEnumValue(java.lang.String ename)
           To obtain enumeration values for extensions, the application has to use GetEnumValue of an extension token.
static int alGetError()
          The AL detects only a subset of those conditions that could be considered errors.
static float alGetFloat(int pname)
          Like OpenGL, AL uses a simplified interface for querying global state.
static void alGetFloat(int pname, java.nio.FloatBuffer data)
          Like OpenGL, AL uses a simplified interface for querying global state.
static int alGetInteger(int pname)
          Like OpenGL, AL uses a simplified interface for querying global state.
static void alGetInteger(int pname, java.nio.IntBuffer data)
          Like OpenGL, AL uses a simplified interface for querying global state.
static void alGetListener(int pname, java.nio.FloatBuffer floatdata)
          Listener state is maintained inside the AL implementation and can be queried in full.
static float alGetListenerf(int pname)
          Listener state is maintained inside the AL implementation and can be queried in full.
static int alGetListeneri(int pname)
          Listener state is maintained inside the AL implementation and can be queried in full.
static void alGetSource(int source, int pname, java.nio.FloatBuffer floatdata)
          Source state is maintained inside the AL implementation, and the current attributes can be queried.
static float alGetSourcef(int source, int pname)
          Source state is maintained inside the AL implementation, and the current attributes can be queried.
static int alGetSourcei(int source, int pname)
          Source state is maintained inside the AL implementation, and the current attributes can be queried.
static java.lang.String alGetString(int pname)
          The application can retrieve state information global to the current AL Context.
static boolean alIsBuffer(int buffer)
          The application can verify whether a buffer Name is valid using the IsBuffer query.
static boolean alIsEnabled(int capability)
          The application can also query whether a given capability is currently enabled or not.
static boolean alIsExtensionPresent(java.lang.String fname)
          To verify that a given extension is available for the current context and the device it is associated with, use this method.
static boolean alIsSource(int id)
          The application can verify whether a source name is valid using the IsSource query.
static void alListener(int pname, java.nio.FloatBuffer value)
          Listener attributes are changed using the Listener group of commands.
static void alListener3f(int pname, float v1, float v2, float v3)
          Listener attributes are changed using the Listener group of commands.
static void alListenerf(int pname, float value)
          Listener attributes are changed using the Listener group of commands.
static void alListeneri(int pname, int value)
          Listener attributes are changed using the Listener group of commands.
static void alSource(int source, int pname, java.nio.FloatBuffer value)
          Specifies the position and other properties as taken into account during sound processing.
static void alSource3f(int source, int pname, float v1, float v2, float v3)
          Specifies the position and other properties as taken into account during sound processing.
static void alSourcef(int source, int pname, float value)
          Specifies the position and other properties as taken into account during sound processing.
static void alSourcei(int source, int pname, int value)
          Specifies the position and other properties as taken into account during sound processing.
static void alSourcePause(int source)
          Pause() applied to an AL_INITIAL Source is a legal NOP.
static void alSourcePause(java.nio.IntBuffer sources)
          Pause() applied to an AL_INITIAL Source is a legal NOP.
static void alSourcePlay(int source)
          Play() applied to an AL_INITIAL Source will promote the Source to AL_PLAYING, thus the data found in the Buffer will be fed into the processing, starting at the beginning.
static void alSourcePlay(java.nio.IntBuffer sources)
          Play() applied to an AL_INITIAL Source will promote the Source to AL_PLAYING, thus the data found in the Buffer will be fed into the processing, starting at the beginning.
static void alSourceQueueBuffers(int source, int buffer)
          Overloads alSourceQueueBuffers.
static void alSourceQueueBuffers(int source, java.nio.IntBuffer buffers)
           The application can queue up one or multiple buffer names using SourceQueueBuffers.
static void alSourceRewind(int source)
          Rewind() applied to an AL_INITIAL Source is a legal NOP.
static void alSourceRewind(java.nio.IntBuffer sources)
          Rewind() applied to an AL_INITIAL Source is a legal NOP.
static void alSourceStop(int source)
          Stop() applied to an AL_INITIAL Source is a legal NOP.
static void alSourceStop(java.nio.IntBuffer sources)
          Stop() applied to an AL_INITIAL Source is a legal NOP.
static int alSourceUnqueueBuffers(int source)
          Overloads alSourceUnqueueBuffers.
static void alSourceUnqueueBuffers(int source, java.nio.IntBuffer buffers)
           Once a queue entry for a buffer has been appended to a queue and is pending processing, it should not be changed.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

AL_INVALID

public static final int AL_INVALID
Bad value

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AL_NONE

public static final int AL_NONE
Disable value

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AL_FALSE

public static final int AL_FALSE
Boolean False

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AL_TRUE

public static final int AL_TRUE
Boolean True

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AL_SOURCE_TYPE

public static final int AL_SOURCE_TYPE
Indicate the type of SOURCE. Sources can be spatialized

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AL_SOURCE_ABSOLUTE

public static final int AL_SOURCE_ABSOLUTE
Indicate source has absolute coordinates

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AL_SOURCE_RELATIVE

public static final int AL_SOURCE_RELATIVE
Indicate Source has listener relative coordinates

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AL_CONE_INNER_ANGLE

public static final int AL_CONE_INNER_ANGLE
Directional source, inner cone angle, in degrees Range: [0-360] Default: 360

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AL_CONE_OUTER_ANGLE

public static final int AL_CONE_OUTER_ANGLE
Directional source, outer cone angle, in degrees. Range: [0-360] Default: 360

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AL_PITCH

public static final int AL_PITCH
Specify the pitch to be applied, either at source, or on mixer results, at listener. Range: [0.5-2.0] Default: 1.0

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AL_POSITION

public static final int AL_POSITION
Specify the current location in three dimensional space. OpenAL, like OpenGL, uses a right handed coordinate system, where in a frontal default view X (thumb) points right, Y points up (index finger), and Z points towards the viewer/camera (middle finger). To switch from a left handed coordinate system, flip the sign on the Z coordinate. Listener position is always in the world coordinate system.

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AL_DIRECTION

public static final int AL_DIRECTION
Specify the current direction as forward vector.

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AL_VELOCITY

public static final int AL_VELOCITY
Specify the current velocity in three dimensional space.

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AL_LOOPING

public static final int AL_LOOPING
Indicate whether source has to loop infinite. Type: ALboolean Range: [TRUE, FALSE] Default: FALSE

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AL_BUFFER

public static final int AL_BUFFER
Indicate the buffer to provide sound samples. Type: ALuint. Range: any valid Buffer id.

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AL_GAIN

public static final int AL_GAIN
Indicate the gain (volume amplification) applied. Type: ALfloat. Range: ]0.0- ] A value of 1.0 means un-attenuated/unchanged. Each division by 2 equals an attenuation of -6dB. Each multiplicaton with 2 equals an amplification of +6dB. A value of 0.0 is meaningless with respect to a logarithmic scale; it is interpreted as zero volume - the channel is effectively disabled.

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AL_MIN_GAIN

public static final int AL_MIN_GAIN
Indicate minimum source attenuation. Type: ALfloat Range: [0.0 - 1.0]

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AL_MAX_GAIN

public static final int AL_MAX_GAIN
Indicate maximum source attenuation. Type: ALfloat Range: [0.0 - 1.0]

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AL_ORIENTATION

public static final int AL_ORIENTATION
Specify the current orientation. Type: ALfv6 (at/up) Range: N/A

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AL_REFERENCE_DISTANCE

public static final int AL_REFERENCE_DISTANCE
Specify the current orientation. Type: ALfv6 (at/up) Range: N/A

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AL_ROLLOFF_FACTOR

public static final int AL_ROLLOFF_FACTOR
Indicate the rolloff factor for the source. Type: ALfloat Range: [0.0 - ] Default: 1.0

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AL_CONE_OUTER_GAIN

public static final int AL_CONE_OUTER_GAIN
Indicate the gain (volume amplification) applied. Type: ALfloat. Range: ]0.0- ] A value of 1.0 means un-attenuated/unchanged. Each division by 2 equals an attenuation of -6dB. Each multiplicaton with 2 equals an amplification of +6dB. A value of 0.0 is meaningless with respect to a logarithmic scale; it is interpreted as zero volume - the channel is effectively disabled.

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AL_MAX_DISTANCE

public static final int AL_MAX_DISTANCE
Specify the maximum distance. Type: ALfloat Range: [0.0 - ]

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AL_CHANNEL_MASK

public static final int AL_CHANNEL_MASK
Specify the channel mask. (Creative) Type: ALuint Range: [0 - 255]

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AL_SOURCE_STATE

public static final int AL_SOURCE_STATE
Source state information

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AL_INITIAL

public static final int AL_INITIAL
Source state information

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AL_PLAYING

public static final int AL_PLAYING
Source state information

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AL_PAUSED

public static final int AL_PAUSED
Source state information

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AL_STOPPED

public static final int AL_STOPPED
Source state information

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AL_BUFFERS_QUEUED

public static final int AL_BUFFERS_QUEUED
Buffer Queue params

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AL_BUFFERS_PROCESSED

public static final int AL_BUFFERS_PROCESSED
Buffer Queue params

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AL_FORMAT_MONO8

public static final int AL_FORMAT_MONO8
Sound buffers: format specifier.

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AL_FORMAT_MONO16

public static final int AL_FORMAT_MONO16
Sound buffers: format specifier.

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AL_FORMAT_STEREO8

public static final int AL_FORMAT_STEREO8
Sound buffers: format specifier.

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AL_FORMAT_STEREO16

public static final int AL_FORMAT_STEREO16
Sound buffers: format specifier.

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AL_FORMAT_VORBIS_EXT

public static final int AL_FORMAT_VORBIS_EXT
Ogg Vorbis format specifier.

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AL_FREQUENCY

public static final int AL_FREQUENCY
Sound buffers: frequency, in units of Hertz [Hz]. This is the number of samples per second. Half of the sample frequency marks the maximum significant frequency component.

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AL_BITS

public static final int AL_BITS
Sound buffers: The number of bits per sample for the data contained in the buffer.

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AL_CHANNELS

public static final int AL_CHANNELS
Sound buffers: The number of channels for the data contained in the buffer.

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AL_SIZE

public static final int AL_SIZE
Sound buffers: Size in bytes of the buffer data.

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AL_DATA

public static final int AL_DATA
Deprecated. This token is a relict of the early OpenAL days and is no longer supported. Neither the OpenAL spec nor OpenAL Soft define it.
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AL_UNUSED

public static final int AL_UNUSED
Buffer state.

Not supported for public use (yet).

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AL_PENDING

public static final int AL_PENDING
Buffer state.

Not supported for public use (yet).

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AL_PROCESSED

public static final int AL_PROCESSED
Buffer state.

Not supported for public use (yet).

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AL_NO_ERROR

public static final int AL_NO_ERROR
Errors: No Error.

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AL_INVALID_NAME

public static final int AL_INVALID_NAME
Illegal name passed as an argument to an AL call.

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AL_INVALID_ENUM

public static final int AL_INVALID_ENUM
Illegal enum passed as an argument to an AL call.

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AL_INVALID_VALUE

public static final int AL_INVALID_VALUE
Illegal value passed as an argument to an AL call. Applies to parameter values, but not to enumerations.

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AL_INVALID_OPERATION

public static final int AL_INVALID_OPERATION
A function was called at inappropriate time, or in an inappropriate way, causing an illegal state. This can be an incompatible ALenum, object ID, and/or function.

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AL_OUT_OF_MEMORY

public static final int AL_OUT_OF_MEMORY
A function could not be completed, because there is not enough memory available.

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AL_VENDOR

public static final int AL_VENDOR
Context strings: Vendor

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AL_VERSION

public static final int AL_VERSION
Context strings: Version

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AL_RENDERER

public static final int AL_RENDERER
Context strings: Renderer

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AL_EXTENSIONS

public static final int AL_EXTENSIONS
Context strings: Extensions

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AL_DOPPLER_FACTOR

public static final int AL_DOPPLER_FACTOR
Doppler scale. Default 1.0

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AL_DOPPLER_VELOCITY

public static final int AL_DOPPLER_VELOCITY
Doppler velocity. Default 1.0

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AL_DISTANCE_MODEL

public static final int AL_DISTANCE_MODEL
Distance model. Default INVERSE_DISTANCE_CLAMPED

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AL_INVERSE_DISTANCE

public static final int AL_INVERSE_DISTANCE
Distance model

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AL_INVERSE_DISTANCE_CLAMPED

public static final int AL_INVERSE_DISTANCE_CLAMPED
Distance model

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Method Detail

alEnable

public static void alEnable(int capability)
The application can temporarily disable certain AL capabilities on a per Context basis. This allows the driver implementation to optimize for certain subsets of operations. Enabling and disabling capabilities is handled using a function pair.

Parameters:
capability - name of a capability to enable

alDisable

public static void alDisable(int capability)
The application can temporarily disable certain AL capabilities on a per Context basis. This allows the driver implementation to optimize for certain subsets of operations. Enabling and disabling capabilities is handled using a function pair.

Parameters:
capability - name of a capability to disable

alIsEnabled

public static boolean alIsEnabled(int capability)
The application can also query whether a given capability is currently enabled or not.

If the token used to specify target is not legal, an AL_INVALID_ENUM error will be generated.

At this time, this mechanism is not used. There are no valid targets.

Parameters:
capability - name of a capability to check
Returns:
true if named feature is enabled

alGetBoolean

public static boolean alGetBoolean(int pname)
Like OpenGL, AL uses a simplified interface for querying global state.

Legal values are e.g. AL_DOPPLER_FACTOR, AL_DOPPLER_VELOCITY, AL_DISTANCE_MODEL.

null destinations are quietly ignored. AL_INVALID_ENUM is the response to errors in specifying pName. The amount of memory required in the destination depends on the actual state requested.

Returns:
boolean state described by pname will be returned.

alGetInteger

public static int alGetInteger(int pname)
Like OpenGL, AL uses a simplified interface for querying global state.

Legal values are e.g. AL_DOPPLER_FACTOR, AL_DOPPLER_VELOCITY, AL_DISTANCE_MODEL.

null destinations are quietly ignored. AL_INVALID_ENUM is the response to errors in specifying pName. The amount of memory required in the destination depends on the actual state requested.

Returns:
int state described by pname will be returned.

alGetFloat

public static float alGetFloat(int pname)
Like OpenGL, AL uses a simplified interface for querying global state.

Legal values are e.g. AL_DOPPLER_FACTOR, AL_DOPPLER_VELOCITY, AL_DISTANCE_MODEL.

null destinations are quietly ignored. AL_INVALID_ENUM is the response to errors in specifying pName. The amount of memory required in the destination depends on the actual state requested.

Returns:
float state described by pname will be returned.

alGetDouble

public static double alGetDouble(int pname)
Like OpenGL, AL uses a simplified interface for querying global state.

Legal values are e.g. AL_DOPPLER_FACTOR, AL_DOPPLER_VELOCITY, AL_DISTANCE_MODEL.

null destinations are quietly ignored. AL_INVALID_ENUM is the response to errors in specifying pName. The amount of memory required in the destination depends on the actual state requested.

Returns:
double state described by pname will be returned.

alGetInteger

public static void alGetInteger(int pname,
                                java.nio.IntBuffer data)
Like OpenGL, AL uses a simplified interface for querying global state.

Legal values are e.g. AL_DOPPLER_FACTOR, AL_DOPPLER_VELOCITY, AL_DISTANCE_MODEL.

null destinations are quietly ignored. AL_INVALID_ENUM is the response to errors in specifying pName. The amount of memory required in the destination depends on the actual state requested.

Parameters:
pname - state to be queried
data - Buffer to place the integers in

alGetFloat

public static void alGetFloat(int pname,
                              java.nio.FloatBuffer data)
Like OpenGL, AL uses a simplified interface for querying global state.

Legal values are e.g. AL_DOPPLER_FACTOR, AL_DOPPLER_VELOCITY, AL_DISTANCE_MODEL.

null destinations are quietly ignored. AL_INVALID_ENUM is the response to errors in specifying pName. The amount of memory required in the destination depends on the actual state requested.

Parameters:
pname - state to be queried
data - Buffer to place the floats in

alGetDouble

public static void alGetDouble(int pname,
                               java.nio.DoubleBuffer data)
Like OpenGL, AL uses a simplified interface for querying global state.

Legal values are e.g. AL_DOPPLER_FACTOR, AL_DOPPLER_VELOCITY, AL_DISTANCE_MODEL.

null destinations are quietly ignored. AL_INVALID_ENUM is the response to errors in specifying pName. The amount of memory required in the destination depends on the actual state requested.

Parameters:
pname - state to be queried
data - Buffer to place the doubles in

alGetString

public static java.lang.String alGetString(int pname)
The application can retrieve state information global to the current AL Context. GetString will return a pointer to a constant string. Valid values for param are VERSION, RENDERER, VENDOR, and EXTENSIONS, as well as the error codes defined by AL. The application can use GetString to retrieve a string for an error code.

Parameters:
pname - The property to be returned
Returns:
OpenAL String property

alGetError

public static int alGetError()
The AL detects only a subset of those conditions that could be considered errors. This is because in many cases error checking would adversely impact the performance of an error-free program.

Each detectable error is assigned a numeric code. When an error is detected by AL, a flag is set and the error code is recorded. Further errors, if they occur, do not affect this recorded code. When GetError is called, the code is returned and the flag is cleared, so that a further error will again record its code. If a call to GetError returns AL_NO_ERROR then there has been no detectable error since the last call to GetError (or since the AL was initialized).

Error codes can be mapped to strings. The GetString function returns a pointer to a constant (literal) string that is identical to the identifier used for the enumeration value, as defined in the specification.

AL_NO_ERROR - "No Error" token.
AL_INVALID_NAME - Invalid Name parameter.
AL_INVALID_ENUM - Invalid parameter.
AL_INVALID_VALUE - Invalid enum parameter value.
AL_INVALID_OPERATION - Illegal call.
AL_OUT_OF_MEMORY - Unable to allocate memory.

The table summarizes the AL errors. Currently, when an error flag is set, results of AL operations are undefined only if AL_OUT_OF_MEMORY has occured. In other cases, the command generating the error is ignored so that it has no effect on AL state or output buffer contents. If the error generating command returns a value, it returns zero. If the generating command modifies values through a pointer argument, no change is made to these values. These error semantics apply only to AL errors, not to system errors such as memory access errors.

Several error generation conditions are implicit in the description of the various AL commands. First, if a command that requires an enumerated value is passed a value that is not one of those specified as allowable for that command, the error AL_INVALID_ENUM results. This is the case even if the argument is a pointer to a symbolic constant if that value is not allowable for the given command. This will occur whether the value is allowable for other functions, or an invalid integer value.

Integer parameters that are used as names for AL objects such as Buffers and Sources are checked for validity. If an invalid name parameter is specified in an AL command, an AL_INVALID_NAME error will be generated, and the command is ignored.

If a negative integer is provided where an argument of type sizei is specified, the error AL_INVALID_VALUE results. The same error will result from attempts to set integral and floating point values for attributes exceeding the legal range for these. The specification does not guarantee that the implementation emits AL_INVALID_VALUE if a NaN or Infinity value is passed in for a float or double argument (as the specification does not enforce possibly expensive testing of floating point values).

Commands can be invalid. For example, certain commands might not be applicable to a given object. There are also illegal combinations of tokens and values as arguments to a command. AL responds to any such illegal command with an AL_INVALID_OPERATION error.

If memory is exhausted as a side effect of the execution of an AL command, either on system level or by exhausting the allocated resources at AL's internal disposal, the error AL_OUT_OF_MEMORY may be generated. This can also happen independent of recent commands if AL has to request memory for an internal task and fails to allocate the required memory from the operating system.

Otherwise errors are generated only for conditions that are explicitely described in this specification.

Returns:
current error state

alIsExtensionPresent

public static boolean alIsExtensionPresent(java.lang.String fname)
To verify that a given extension is available for the current context and the device it is associated with, use this method.

A null name argument returns AL_FALSE, as do invalid and unsupported string tokens. A null deviceHandle will result in an INVALID_DEVICE error.

Parameters:
fname - String describing the desired extension
Returns:
true if extension is available, false if not

alGetEnumValue

public static int alGetEnumValue(java.lang.String ename)

To obtain enumeration values for extensions, the application has to use GetEnumValue of an extension token. Enumeration values are defined within the AL namespace and allocated according to specification of the core API and the extensions, thus they are context-independent.

Returns 0 if the enumeration can not be found. The presence of an enum value does not guarantee the applicability of an extension to the current context. A non-zero return indicates merely that the implementation is aware of the existence of this extension. Implementations should not attempt to return 0 to indicate that the extensions is not supported for the current context.

Parameters:
ename - String describing an OpenAL enum
Returns:
Actual int for the described enumeration name

alListeneri

public static void alListeneri(int pname,
                               int value)
Listener attributes are changed using the Listener group of commands.

Parameters:
pname - name of the attribute to be set
value - value to set the attribute to

alListenerf

public static void alListenerf(int pname,
                               float value)
Listener attributes are changed using the Listener group of commands.

Parameters:
pname - name of the attribute to be set
value - floating point value to set the attribute to

alListener

public static void alListener(int pname,
                              java.nio.FloatBuffer value)
Listener attributes are changed using the Listener group of commands.

Parameters:
pname - name of the attribute to be set
value - FloatBuffer containing value to set the attribute to

alListener3f

public static void alListener3f(int pname,
                                float v1,
                                float v2,
                                float v3)
Listener attributes are changed using the Listener group of commands.

Parameters:
pname - name of the attribute to be set
v1 - value value 1
v2 - value value 2
v3 - float value 3

alGetListeneri

public static int alGetListeneri(int pname)
Listener state is maintained inside the AL implementation and can be queried in full.

Parameters:
pname - name of the attribute to be retrieved
Returns:
int

alGetListenerf

public static float alGetListenerf(int pname)
Listener state is maintained inside the AL implementation and can be queried in full.

Parameters:
pname - name of the attribute to be retrieved
Returns:
float

alGetListener

public static void alGetListener(int pname,
                                 java.nio.FloatBuffer floatdata)
Listener state is maintained inside the AL implementation and can be queried in full.

Parameters:
pname - name of the attribute to be retrieved
floatdata - Buffer to write floats to

alGenSources

public static void alGenSources(java.nio.IntBuffer sources)
The application requests a number of Sources using GenSources.

Parameters:
sources - array holding sources

alGenSources

public static int alGenSources()
Overloads alGenSources.


alDeleteSources

public static void alDeleteSources(java.nio.IntBuffer sources)
The application requests deletion of a number of Sources by DeleteSources.

Parameters:
sources - Source array to delete from

alDeleteSources

public static void alDeleteSources(int source)
Overloads alDeleteSources.


alIsSource

public static boolean alIsSource(int id)
The application can verify whether a source name is valid using the IsSource query.

Parameters:
id - id of source to be testes for validity
Returns:
true if id is valid, false if not

alSourcei

public static void alSourcei(int source,
                             int pname,
                             int value)
Specifies the position and other properties as taken into account during sound processing.

Parameters:
source - Source to det property on
pname - property to set
value - value of property

alSourcef

public static void alSourcef(int source,
                             int pname,
                             float value)
Specifies the position and other properties as taken into account during sound processing.

Parameters:
source - Source to det property on
pname - property to set
value - value of property

alSource

public static void alSource(int source,
                            int pname,
                            java.nio.FloatBuffer value)
Specifies the position and other properties as taken into account during sound processing.

Parameters:
source - Source to set property on
pname - property to set
value - FloatBuffer containing value of property

alSource3f

public static void alSource3f(int source,
                              int pname,
                              float v1,
                              float v2,
                              float v3)
Specifies the position and other properties as taken into account during sound processing.

Parameters:
source - Source to set property on
pname - property to set
v1 - value 1 of property
v2 - value 2 of property
v3 - value 3 of property

alGetSourcei

public static int alGetSourcei(int source,
                               int pname)
Source state is maintained inside the AL implementation, and the current attributes can be queried. The performance of such queries is implementation dependent, no performance guarantees are made.

Parameters:
source - source to get property from
pname - name of property
Returns:
int

alGetSourcef

public static float alGetSourcef(int source,
                                 int pname)
Source state is maintained inside the AL implementation, and the current attributes can be queried. The performance of such queries is implementation dependent, no performance guarantees are made.

Parameters:
source - source to get property from
pname - name of property
Returns:
float

alGetSource

public static void alGetSource(int source,
                               int pname,
                               java.nio.FloatBuffer floatdata)
Source state is maintained inside the AL implementation, and the current attributes can be queried. The performance of such queries is implementation dependent, no performance guarantees are made.

Parameters:
source - Source to get property from
pname - property to get
floatdata - Buffer to write floats to

alSourcePlay

public static void alSourcePlay(java.nio.IntBuffer sources)
Play() applied to an AL_INITIAL Source will promote the Source to AL_PLAYING, thus the data found in the Buffer will be fed into the processing, starting at the beginning. Play() applied to a AL_PLAYING Source will restart the Source from the beginning. It will not affect the configuration, and will leave the Source in AL_PLAYING state, but reset the sampling offset to the beginning. Play() applied to a AL_PAUSED Source will resume processing using the Source state as preserved at the Pause() operation. Play() applied to a AL_STOPPED Source will propagate it to AL_INITIAL then to AL_PLAYING immediately.

Parameters:
sources - array of sources to play

alSourcePause

public static void alSourcePause(java.nio.IntBuffer sources)
Pause() applied to an AL_INITIAL Source is a legal NOP. Pause() applied to a AL_PLAYING Source will change its state to AL_PAUSED. The Source is exempt from processing, its current state is preserved. Pause() applied to a AL_PAUSED Source is a legal NOP. Pause() applied to a AL_STOPPED Source is a legal NOP.

Parameters:
sources - array of sources to pause

alSourceStop

public static void alSourceStop(java.nio.IntBuffer sources)
Stop() applied to an AL_INITIAL Source is a legal NOP. Stop() applied to a AL_PLAYING Source will change its state to AL_STOPPED. The Source is exempt from processing, its current state is preserved. Stop() applied to a AL_PAUSED Source will change its state to AL_STOPPED, with the same consequences as on a AL_PLAYING Source. Stop() applied to a AL_STOPPED Source is a legal NOP.

Parameters:
sources - array of sources to stop

alSourceRewind

public static void alSourceRewind(java.nio.IntBuffer sources)
Rewind() applied to an AL_INITIAL Source is a legal NOP. Rewind() applied to a AL_PLAYING Source will change its state to AL_STOPPED then AL_INITIAL. The Source is exempt from processing, its current state is preserved, with the exception of the sampling offset which is reset to the beginning. Rewind() applied to a AL_PAUSED Source will change its state to AL_INITIAL, with the same consequences as on a AL_PLAYING Source. Rewind() applied to a AL_STOPPED Source promotes the Source to AL_INITIAL, resetting the sampling offset to the beginning.

Parameters:
sources - array of sources to rewind

alSourcePlay

public static void alSourcePlay(int source)
Play() applied to an AL_INITIAL Source will promote the Source to AL_PLAYING, thus the data found in the Buffer will be fed into the processing, starting at the beginning. Play() applied to a AL_PLAYING Source will restart the Source from the beginning. It will not affect the configuration, and will leave the Source in AL_PLAYING state, but reset the sampling offset to the beginning. Play() applied to a AL_PAUSED Source will resume processing using the Source state as preserved at the Pause() operation. Play() applied to a AL_STOPPED Source will propagate it to AL_INITIAL then to AL_PLAYING immediately.

Parameters:
source - Source to play

alSourcePause

public static void alSourcePause(int source)
Pause() applied to an AL_INITIAL Source is a legal NOP. Pause() applied to a AL_PLAYING Source will change its state to AL_PAUSED. The Source is exempt from processing, its current state is preserved. Pause() applied to a AL_PAUSED Source is a legal NOP. Pause() applied to a AL_STOPPED Source is a legal NOP.

Parameters:
source - Source to pause

alSourceStop

public static void alSourceStop(int source)
Stop() applied to an AL_INITIAL Source is a legal NOP. Stop() applied to a AL_PLAYING Source will change its state to AL_STOPPED. The Source is exempt from processing, its current state is preserved. Stop() applied to a AL_PAUSED Source will change its state to AL_STOPPED, with the same consequences as on a AL_PLAYING Source. Stop() applied to a AL_STOPPED Source is a legal NOP.

Parameters:
source - Source to stop

alSourceRewind

public static void alSourceRewind(int source)
Rewind() applied to an AL_INITIAL Source is a legal NOP. Rewind() applied to a AL_PLAYING Source will change its state to AL_STOPPED then AL_INITIAL. The Source is exempt from processing, its current state is preserved, with the exception of the sampling offset which is reset to the beginning. Rewind() applied to a AL_PAUSED Source will change its state to AL_INITIAL, with the same consequences as on a AL_PLAYING Source. Rewind() applied to a AL_STOPPED Source promotes the Source to AL_INITIAL, resetting the sampling offset to the beginning.

Parameters:
source - Source to rewind

alGenBuffers

public static void alGenBuffers(java.nio.IntBuffer buffers)
The application requests a number of Buffers using GenBuffers.

Parameters:
buffers - holding buffers

alGenBuffers

public static int alGenBuffers()
Overloads alGenBuffers.


alDeleteBuffers

public static void alDeleteBuffers(java.nio.IntBuffer buffers)

The application requests deletion of a number of Buffers by calling DeleteBuffers.

Once deleted, Names are no longer valid for use with AL function calls. Any such use will cause an AL_INVALID_NAME error. The implementation is free to defer actual release of resources.

IsBuffer(bname) can be used to verify deletion of a buffer. Deleting bufferName 0 is a legal NOP in both scalar and vector forms of the command. The same is true for unused buffer names, e.g. such as not allocated yet, or as released already.

Parameters:
buffers - Buffer to delete from

alDeleteBuffers

public static void alDeleteBuffers(int buffer)
Overloads alDeleteBuffers.


alIsBuffer

public static boolean alIsBuffer(int buffer)
The application can verify whether a buffer Name is valid using the IsBuffer query.

Parameters:
buffer - buffer to be tested for validity
Returns:
true if supplied buffer is valid, false if not

alBufferData

public static void alBufferData(int buffer,
                                int format,
                                java.nio.ByteBuffer data,
                                int freq)

A special case of Buffer state is the actual sound sample data stored in asociation with the Buffer. Applications can specify sample data using BufferData.

The data specified is copied to an internal software, or if possible, hardware buffer. The implementation is free to apply decompression, conversion, resampling, and filtering as needed. The internal format of the Buffer is not exposed to the application, and not accessible. Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16. An implementation may expose other formats, see the chapter on Extensions for information on determining if additional formats are supported.

Applications should always check for an error condition after attempting to specify buffer data in case an implementation has to generate an AL_OUT_OF_MEMORY or conversion related AL_INVALID_VALUE error. The application is free to reuse the memory specified by the data pointer once the call to BufferData returns. The implementation has to dereference, e.g. copy, the data during BufferData execution.

Parameters:
buffer - Buffer to fill
format - format sound data is in
data - location of data
freq - frequency of data

alBufferData

public static void alBufferData(int buffer,
                                int format,
                                java.nio.IntBuffer data,
                                int freq)

A special case of Buffer state is the actual sound sample data stored in asociation with the Buffer. Applications can specify sample data using BufferData.

The data specified is copied to an internal software, or if possible, hardware buffer. The implementation is free to apply decompression, conversion, resampling, and filtering as needed. The internal format of the Buffer is not exposed to the application, and not accessible. Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16. An implementation may expose other formats, see the chapter on Extensions for information on determining if additional formats are supported.

Applications should always check for an error condition after attempting to specify buffer data in case an implementation has to generate an AL_OUT_OF_MEMORY or conversion related AL_INVALID_VALUE error. The application is free to reuse the memory specified by the data pointer once the call to BufferData returns. The implementation has to dereference, e.g. copy, the data during BufferData execution.

Parameters:
buffer - Buffer to fill
format - format sound data is in
data - location of data
freq - frequency of data

alBufferData

public static void alBufferData(int buffer,
                                int format,
                                java.nio.ShortBuffer data,
                                int freq)

A special case of Buffer state is the actual sound sample data stored in asociation with the Buffer. Applications can specify sample data using BufferData.

The data specified is copied to an internal software, or if possible, hardware buffer. The implementation is free to apply decompression, conversion, resampling, and filtering as needed. The internal format of the Buffer is not exposed to the application, and not accessible. Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16. An implementation may expose other formats, see the chapter on Extensions for information on determining if additional formats are supported.

Applications should always check for an error condition after attempting to specify buffer data in case an implementation has to generate an AL_OUT_OF_MEMORY or conversion related AL_INVALID_VALUE error. The application is free to reuse the memory specified by the data pointer once the call to BufferData returns. The implementation has to dereference, e.g. copy, the data during BufferData execution.

Parameters:
buffer - Buffer to fill
format - format sound data is in
data - location of data
freq - frequency of data

alGetBufferi

public static int alGetBufferi(int buffer,
                               int pname)
Buffer state is maintained inside the AL implementation and can be queried in full.
ALC_FREQUENCY - specified in samples per second, i.e. units of Hertz [Hz].
ALC_SIZE - Size in bytes of the buffer data.

Parameters:
buffer - buffer to get property from
pname - name of property to retrieve

alGetBufferf

public static float alGetBufferf(int buffer,
                                 int pname)
Buffer state is maintained inside the AL implementation and can be queried in full.
ALC_FREQUENCY - specified in samples per second, i.e. units of Hertz [Hz].
ALC_SIZE - Size in bytes of the buffer data.

Parameters:
buffer - buffer to get property from
pname - name of property to retrieve
Returns:
float

alSourceQueueBuffers

public static void alSourceQueueBuffers(int source,
                                        java.nio.IntBuffer buffers)

The application can queue up one or multiple buffer names using SourceQueueBuffers. The buffers will be queued in the sequence in which they appear in the array.

This command is legal on a Source in any state (to allow for streaming, queueing has to be possible on a AL_PLAYING Source). Queues are read-only with exception of the unqueue operation. The Buffer Name AL_NONE (i.e. 0) can be queued.

Parameters:
source - source to queue buffers onto
buffers - buffers to be queued

alSourceQueueBuffers

public static void alSourceQueueBuffers(int source,
                                        int buffer)
Overloads alSourceQueueBuffers.


alSourceUnqueueBuffers

public static void alSourceUnqueueBuffers(int source,
                                          java.nio.IntBuffer buffers)

Once a queue entry for a buffer has been appended to a queue and is pending processing, it should not be changed. Removal of a given queue entry is not possible unless either the Source is AL_STOPPED (in which case then entire queue is considered processed), or if the queue entry has already been processed (AL_PLAYING or AL_PAUSED Source).

The Unqueue command removes a number of buffers entries that have finished processing, in the order of appearance, from the queue. The operation will fail if more buffers are requested than available, leaving the destination arguments unchanged. An AL_INVALID_VALUE error will be thrown. If no error, the destination argument will have been updated accordingly.

Parameters:
source - source to unqueue buffers from
buffers - IntBuffer containing list of names that were unqueued

alSourceUnqueueBuffers

public static int alSourceUnqueueBuffers(int source)
Overloads alSourceUnqueueBuffers.


alDistanceModel

public static void alDistanceModel(int value)

Samples usually use the entire dynamic range of the chosen format/encoding, independent of their real world intensity. In other words, a jet engine and a clockwork both will have samples with full amplitude. The application will then have to adjust Source AL_GAIN accordingly to account for relative differences.

Source AL_GAIN is then attenuated by distance. The effective attenuation of a Source depends on many factors, among which distance attenuation and source and Listener AL_GAIN are only some of the contributing factors. Even if the source and Listener AL_GAIN exceed 1.0 (amplification beyond the guaranteed dynamic range), distance and other attenuation might ultimately limit the overall AL_GAIN to a value below 1.0.

AL currently supports three modes of operation with respect to distance attenuation. It supports two distance-dependent attenuation models, one which is similar to the IASIG I3DL2 (and DS3D) model. The application choses one of these two models (or can chose to disable distance-dependent attenuation effects model) on a per-context basis.

Legal arguments are AL_NONE, AL_INVERSE_DISTANCE, and AL_INVERSE_DISTANCE_CLAMPED.

AL_NONE bypasses all distance attenuation calculation for all Sources. The implementation is expected to optimize this situation.

AL_INVERSE_DISTANCE_CLAMPED is the DS3D model, with AL_REFERENCE_DISTANCE indicating both the reference distance and the distance below which gain will be clamped.

AL_INVERSE_DISTANCE is equivalent to the DS3D model with the exception that AL_REFERENCE_DISTANCE does not imply any clamping.

The AL implementation is still free to apply any range clamping as necessary. The current distance model chosen can be queried using GetIntegerv and AL_DISTANCE_MODEL.

Parameters:
value - distance model to be set

alDopplerFactor

public static void alDopplerFactor(float value)
The Doppler Effect depends on the velocities of Source and Listener relative to the medium, and the propagation speed of sound in that medium. The application might want to emphasize or de-emphasize the Doppler Effect as physically accurate calculation might not give the desired results. The amount of frequency shift (pitch change) is proportional to the speed of listener and source along their line of sight. The application can increase or decrease that frequency shift by specifying the scaling factor AL should apply to the result of the calculation.

The Doppler Effect as implemented by AL is described by the formula below. Effects of the medium (air, water) moving with respect to listener and source are ignored. AL_DOPPLER_VELOCITY is the propagation speed relative to which the Source velocities are interpreted.

         VD: AL_DOPPLER_VELOCITY
         DF: AL_DOPPLER_FACTOR
         vl: Listener velocity (scalar, projected on source-listener vector)
         vs: Source verlocity (scalar, projected on source-listener vector)
         f: Frequency in sample
         f': effective Doppler shifted frequency
 

f' = DF * f * (VD-vl)/(VD+vs)

vl<0, vs>0 : source and listener approaching each other vl>0, vs<0 : source and listener moving away from each other

The implementation has to clamp the projected Listener velocity vl, if abs(vl) is greater or equal VD. It similarly has to clamp the projected Source velocity vs if abs(vs) is greater or equal VD.

There are two API calls global to the current context that provide control of the two related parameters.

AL_DOPPLER_FACTOR is a simple scaling to exaggerate or deemphasize the Doppler (pitch) shift resulting from the calculation.

A negative value will result in an AL_INVALID_VALUE error, the command is then ignored. The default value is 1. The current setting can be queried using GetFloatv and AL_DOPPLER_FACTOR. The implementation is free to optimize the case of AL_DOPPLER_FACTOR being set to zero, as this effectively disables the effect.

Parameters:
value - Doppler scale value to set

alDopplerVelocity

public static void alDopplerVelocity(float value)
The Doppler Effect depends on the velocities of Source and Listener relative to the medium, and the propagation speed of sound in that medium. The application might want to emphasize or de-emphasize the Doppler Effect as physically accurate calculation might not give the desired results. The amount of frequency shift (pitch change) is proportional to the speed of listener and source along their line of sight. The application can increase or decrease that frequency shift by specifying the scaling factor AL should apply to the result of the calculation.

The Doppler Effect as implemented by AL is described by the formula below. Effects of the medium (air, water) moving with respect to listener and source are ignored. AL_DOPPLER_VELOCITY is the propagation speed relative to which the Source velocities are interpreted.

         VD: AL_DOPPLER_VELOCITY
         DF: AL_DOPPLER_FACTOR
         vl: Listener velocity (scalar, projected on source-listener vector)
         vs: Source verlocity (scalar, projected on source-listener vector)
         f: Frequency in sample
         f': effective Doppler shifted frequency
 

f' = DF * f * (VD-vl)/(VD+vs)

vl<0, vs>0 : source and listener approaching each other vl>0, vs<0 : source and listener moving away from each other

The implementation has to clamp the projected Listener velocity vl, if abs(vl) is greater or equal VD. It similarly has to clamp the projected Source velocity vs if abs(vs) is greater or equal VD.

There are two API calls global to the current context that provide control of the two related parameters.

AL_DOPPLER_VELOCITY allows the application to change the reference (propagation) velocity used in the Doppler Effect calculation. This permits the application to use a velocity scale appropriate to its purposes.

A negative or zero value will result in an AL_INVALID_VALUE error, the command is then ignored. The default value is 1. The current setting can be queried using GetFloatv and AL_DOPPLER_VELOCITY.

Parameters:
value - Doppler velocity value to set


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