- All Superinterfaces:
- AutoCloseable,- Line
SourceDataLine, and the
 latter, TargetDataLine. Port objects, too, are either source
 lines or target lines. A mixer can accept prerecorded, loopable sound as
 input, by having some of its source lines be instances of objects that
 implement the Clip interface.
 
 Through methods of the Line interface, which Mixer extends, a
 mixer might provide a set of controls that are global to the mixer. For
 example, the mixer can have a master gain control. These global controls are
 distinct from the controls belonging to each of the mixer's individual lines.
 
 Some mixers, especially those with internal digital mixing capabilities, may
 provide additional capabilities by implementing the DataLine
 interface.
 
A mixer can support synchronization of its lines. When one line in a synchronized group is started or stopped, the other lines in the group automatically start or stop simultaneously with the explicitly affected one.
- Since:
- 1.3
- 
Nested Class SummaryNested ClassesModifier and TypeInterfaceDescriptionstatic classTheMixer.Infoclass represents information about an audio mixer, including the product's name, version, and vendor, along with a textual description.
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Method SummaryModifier and TypeMethodDescriptionObtains a line that is available for use and that matches the description in the specifiedLine.Infoobject.intgetMaxLines(Line.Info info) Obtains the approximate maximum number of lines of the requested type that can be open simultaneously on the mixer.Obtains information about this mixer, including the product's name, version, vendor, etc.Obtains information about the set of source lines supported by this mixer.getSourceLineInfo(Line.Info info) Obtains information about source lines of a particular type supported by the mixer.Line[]Obtains the set of all source lines currently open to this mixer.Obtains information about the set of target lines supported by this mixer.getTargetLineInfo(Line.Info info) Obtains information about target lines of a particular type supported by the mixer.Line[]Obtains the set of all target lines currently open from this mixer.booleanisLineSupported(Line.Info info) Indicates whether the mixer supports a line (or lines) that match the specifiedLine.Infoobject.booleanisSynchronizationSupported(Line[] lines, boolean maintainSync) Reports whether this mixer supports synchronization of the specified set of lines.voidsynchronize(Line[] lines, boolean maintainSync) Synchronizes two or more lines.voidunsynchronize(Line[] lines) Releases synchronization for the specified lines.Methods declared in interface javax.sound.sampled.LineaddLineListener, close, getControl, getControls, getLineInfo, isControlSupported, isOpen, open, removeLineListener
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Method Details- 
getMixerInfoMixer.Info getMixerInfo()Obtains information about this mixer, including the product's name, version, vendor, etc.- Returns:
- a mixer info object that describes this mixer
- See Also:
 
- 
getSourceLineInfoLine.Info[] getSourceLineInfo()Obtains information about the set of source lines supported by this mixer. Some source lines may only be available when this mixer is open.- Returns:
- array of Line.Infoobjects representing source lines for this mixer. If no source lines are supported, an array of length 0 is returned.
 
- 
getTargetLineInfoLine.Info[] getTargetLineInfo()Obtains information about the set of target lines supported by this mixer. Some target lines may only be available when this mixer is open.- Returns:
- array of Line.Infoobjects representing target lines for this mixer. If no target lines are supported, an array of length 0 is returned.
 
- 
getSourceLineInfoObtains information about source lines of a particular type supported by the mixer. Some source lines may only be available when this mixer is open.- Parameters:
- info- a- Line.Infoobject describing lines about which information is queried
- Returns:
- an array of Line.Infoobjects describing source lines matching the type requested. If no matching source lines are supported, an array of length 0 is returned.
 
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getTargetLineInfoObtains information about target lines of a particular type supported by the mixer. Some target lines may only be available when this mixer is open.- Parameters:
- info- a- Line.Infoobject describing lines about which information is queried
- Returns:
- an array of Line.Infoobjects describing target lines matching the type requested. If no matching target lines are supported, an array of length 0 is returned.
 
- 
isLineSupportedIndicates whether the mixer supports a line (or lines) that match the specifiedLine.Infoobject. Some lines may only be supported when this mixer is open.- Parameters:
- info- describes the line for which support is queried
- Returns:
- trueif at least one matching line is supported,- falseotherwise
 
- 
getLineObtains a line that is available for use and that matches the description in the specifiedLine.Infoobject.If a DataLineis requested, andinfois an instance ofDataLine.Infospecifying at least one fully qualified audio format, the last one will be used as the default format of the returnedDataLine.- Parameters:
- info- describes the desired line
- Returns:
- a line that is available for use and that matches the description
         in the specified Line.Infoobject
- Throws:
- LineUnavailableException- if a matching line is not available due to resource restrictions
- IllegalArgumentException- if this mixer does not support any lines matching the description
- SecurityException- if a matching line is not available due to security restrictions
 
- 
getMaxLinesObtains the approximate maximum number of lines of the requested type that can be open simultaneously on the mixer.Certain types of mixers do not have a hard bound and may allow opening more lines. Since certain lines are a shared resource, a mixer may not be able to open the maximum number of lines if another process has opened lines of this mixer. The requested type is any line that matches the description in the provided Line.Infoobject. For example, if the info object represents a speaker port, and the mixer supports exactly one speaker port, this method should return 1. If the info object represents a source data line and the mixer supports the use of 32 source data lines simultaneously, the return value should be 32. If there is no limit, this function returnsAudioSystem.NOT_SPECIFIED.- Parameters:
- info- a- Line.Infothat describes the line for which the number of supported instances is queried
- Returns:
- the maximum number of matching lines supported, or
         AudioSystem.NOT_SPECIFIED
 
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getSourceLinesLine[] getSourceLines()Obtains the set of all source lines currently open to this mixer.- Returns:
- the source lines currently open to the mixer. If no source lines are currently open to this mixer, an array of length 0 is returned.
- Throws:
- SecurityException- if the matching lines are not available due to security restrictions
 
- 
getTargetLinesLine[] getTargetLines()Obtains the set of all target lines currently open from this mixer.- Returns:
- target lines currently open from the mixer. If no target lines are currently open from this mixer, an array of length 0 is returned.
- Throws:
- SecurityException- if the matching lines are not available due to security restrictions
 
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synchronizeSynchronizes two or more lines. Any subsequent command that starts or stops audio playback or capture for one of these lines will exert the same effect on the other lines in the group, so that they start or stop playing or capturing data simultaneously.- Parameters:
- lines- the lines that should be synchronized
- maintainSync-- trueif the synchronization must be precisely maintained (i.e., the synchronization must be sample-accurate) at all times during operation of the lines, or- falseif precise synchronization is required only during start and stop operations
- Throws:
- IllegalArgumentException- if the lines cannot be synchronized. This may occur if the lines are of different types or have different formats for which this mixer does not support synchronization, or if all lines specified do not belong to this mixer.
 
- 
unsynchronizeReleases synchronization for the specified lines. The array must be identical to one for which synchronization has already been established; otherwise an exception may be thrown. However,nullmay be specified, in which case all currently synchronized lines that belong to this mixer are unsynchronized.- Parameters:
- lines- the synchronized lines for which synchronization should be released, or- nullfor all this mixer's synchronized lines
- Throws:
- IllegalArgumentException- if the lines cannot be unsynchronized. This may occur if the argument specified does not exactly match a set of lines for which synchronization has already been established.
 
- 
isSynchronizationSupportedReports whether this mixer supports synchronization of the specified set of lines.- Parameters:
- lines- the set of lines for which synchronization support is queried
- maintainSync-- trueif the synchronization must be precisely maintained (i.e., the synchronization must be sample-accurate) at all times during operation of the lines, or- falseif precise synchronization is required only during start and stop operations
- Returns:
- trueif the lines can be synchronized,- falseotherwise
 
 
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