BASS.NET API for the Un4seen BASS Audio Library

EncoderBassEnc_Aac Class

BASS.NET API for the Un4seen BASS Audio Library
Encoder class implementation for build-in BASSenc_AAC encoding.
Inheritance Hierarchy

SystemObject
  Un4seen.Bass.MiscBaseEncoder
    Un4seen.Bass.MiscEncoderBassEnc_Aac

Namespace:  Un4seen.Bass.Misc
Assembly:  Bass.Net (in Bass.Net.dll) Version: 2.4.17.5
Syntax

[SerializableAttribute]
public sealed class EncoderBassEnc_Aac : BaseEncoder

The EncoderBassEnc_Aac type exposes the following members.

Constructors

  NameDescription
Public methodEncoderBassEnc_Aac
Creates an instance of the Fraunhofer FDK AAC encoder implementation.
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Properties

  NameDescription
Public propertyChannelBitwidth
This property returns the actual bitwidth of the sample data of the channel (e.g. 8, 16, 32).
(Inherited from BaseEncoder.)
Public propertyChannelHandle
Gets or Sets the channel handle which is used to create the broadcast encoder class.
(Inherited from BaseEncoder.)
Public propertyChannelInfo
Returns the general channel info.
(Inherited from BaseEncoder.)
Public propertyChannelNumChans
This property returns the actual number of channles of the sample data BASS is using with the channel (e.g. 1=mono, 2=stereo, etc.).
(Inherited from BaseEncoder.)
Public propertyChannelSampleRate
This property returns the actual sample rate in Hz of the sample data BASS is using with the channel (e.g. 44100).
(Inherited from BaseEncoder.)
Public propertyDefaultOutputExtension
This return the default extension of an output file for this encoder (either ".aac" or ".m4a").
(Overrides BaseEncoderDefaultOutputExtension.)
Public propertyEffectiveBitrate
Returns the CBR encoder bitrate (in kbps) of the output.
(Overrides BaseEncoderEffectiveBitrate.)
Public propertyEncoderCommandLine
Gets the actual encoder command-line string (using all FDKAAC_xxx properties).
(Overrides BaseEncoderEncoderCommandLine.)
Public propertyEncoderDirectory
Gets or Sets the encoder's base directory.
(Inherited from BaseEncoder.)
Public propertyEncoderExists
This property always return .
(Overrides BaseEncoderEncoderExists.)
Public propertyEncoderHandle
Gets or sets the current HENCODE encoder handle.
(Inherited from BaseEncoder.)
Public propertyEncoderType
Gets a value indicating the type of content. Here BASS_CTYPE_STREAM_AAC is always returned.
(Overrides BaseEncoderEncoderType.)
Public propertyFDKAAC_UseADTS
-f: Use ADTS container instead of MPEG-4 (currently always true).
Public propertyForce16Bit
Gets or Sets if a encoding in 16-bit sample data should be forced (default is ).
(Inherited from BaseEncoder.)
Public propertyInputFile
Gets or Sets the input file name to be processed by the encoder (null = STDIN, default).
(Inherited from BaseEncoder.)
Public propertyIsActive
Gets a value indicating if the encoder has been started (see Start(ENCODEPROC, IntPtr, Boolean)) and is active - else will be returned.
(Inherited from BaseEncoder.)
Public propertyIsPaused
Gets a value indicating if the encoder has been paused (see Pause(Boolean)) - else must be returned.
(Inherited from BaseEncoder.)
Public propertyIsStreaming
Is this instance used for streaming? When set to true, some internal encoder options might be set. Default is false.
(Inherited from BaseEncoder.)
Public propertyNoLimit
Gets or Sets if encoding should use the CAST_NOLIMIT flag (which is only needed, if the encoder is used for streaming).
(Inherited from BaseEncoder.)
Public propertyOutputFile
Gets or Sets the output file name to be processed by the encoder (null = STDOUT, default).
(Inherited from BaseEncoder.)
Public propertySupportsSTDOUT
BASSenc_AAC implements STDOUT, so is always returned.
(Overrides BaseEncoderSupportsSTDOUT.)
Public propertyTAGs
Gets or Sets the TAG_INFO structure associated with the encoder.
(Inherited from BaseEncoder.)
Public propertyUseAsyncQueue
Gets or Sets if encoding should use an async queue (i.e. the BASS_ENCODE_QUEUE flag).
(Inherited from BaseEncoder.)
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Methods

  NameDescription
Public methodDispose
Implement IDisposable.
(Inherited from BaseEncoder.)
Protected methodFinalize
Finalization code.
(Inherited from BaseEncoder.)
Public methodPause
Pauses or resumes an encoder.
(Inherited from BaseEncoder.)
Public methodSettingsString
Returns the string representation of the current encoder settings.
(Overrides BaseEncoderSettingsString.)
Public methodStart
This method starts the actual BASSenc_AAC encoder.
(Overrides BaseEncoderStart(ENCODEPROC, IntPtr, Boolean).)
Public methodStop
Stops the encoder immediately (if started).
(Inherited from BaseEncoder.)
Public methodStop(Boolean)
Stops the encoder (if started).
(Inherited from BaseEncoder.)
Public methodToString
Returns the name of the Encoder.
(Overrides ObjectToString.)
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Fields

  NameDescription
Public fieldFDKAAC_ConstantBitrate
--bitrate: encode in CBR mode; bitrate in kbps (8..576), default 128 kbps.
Public fieldFDKAAC_Profile
--object-type: choose the AAC profile; default is 2 (AAC LC).
Public fieldFDKAAC_VBRMode
--vbr: bitrate mode; 0=CBR, 1..5 VBRLevel.
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Remarks

This class uses the BASS_CTYPE_STREAM_AAC encoder type.

BASSenc_AAC (bassenc_aac.dll) must be made available.

AAC encoding is based on the FDK AAC encoder: Hydrogenauio Fraunhofer FDK AAC

AAC is patented and a licence is required to use it in commercial products. A licence can be obtained from Via: www.via-corp.com/licensing

This implementation uses the automatic DSP system for encoding. Meaning the sending of sample data to the encoder is done automatically when you play the channel (BASS_ChannelPlay(Int32, Boolean)) or call BASS_ChannelGetData(Int32, IntPtr, Int32) (if it's a decoding channel). So there is no need to call BASS_Encode_Write(Int32, IntPtr, Int32) manually!

If you simply want to encode a physical file please also take a look to the EncodeFile(String, String, BaseEncoder, BaseEncoderENCODEFILEPROC, Boolean, Boolean).

See Also

Reference