FileEncoder

A stream.Writable class that converts some PCM input to flac output in a file.

FileEncoder(options)

You can pass all the options that can expect the Writable object, but also you can pass:

• file: String - File to the output file
  • You must provide this value
• isOggStream: Boolean
  • Indicates if the output would be an ogg stream or a raw FLAC stream
  • Defaults to false
• channels: Number
  • Indicates to the encoder the number of channels that will have the PCM stream
  • Defaults to 2
• bitsPerSample: Number
  • Indicates to the encoder the bits per sample of the PCM stream
  • Defaults to 16
• samplerate: Number
  • Indicates to the encoder the samplerate of the PCM stream
  • Defaults to 44100
• oggSerialNumber: Number
  • Indicates the serial number of the ogg stream, if its an ogg stream
  • No default value, you must provide this value if its an ogg stream
• totalSamplesEstimate: Number
  • An estimation of the total samples of the PCM stream
  • Optional
• compressionLevel: Number
  • Sets the compression level for the decoder, changing the parameters below this one for you
  • See what are the parameters changed
  • Optional
• doMidSideStereo: Boolean
  • When true, encodes stereo streams using mid-side encoding.
  • Optional
• looseMidSideStereo: Number
  • When true and doMidSideStereo set to true, enables adaptative switching between mid-side and left-right encoding
  • Optional
• apodization: String
  • See this link
  • Optional
• maxLpcOrder: Number
  • Set the maximum LPC Order, or set to 0 to use fixed predictors
  • Optional
• qlpCoeffPrecision: Number
  • Set the precision of the QLP coefficients, or 0 to let the encoder select it for you
  • Optional
• doQlpCoeffPrecSearch: Boolean
  • See this link
  • Optional
• doExhaustiveModelSearch: Boolean
  • See this link
  • Optional
• minResidualPartitionOrder: Number
  • See this link
  • Optional
• maxResidualPartitionOrder: Number
  • See this link
  • Optional
• riceParameterSearchDist: Number
  • See this link
  • Optional

StreamEncoder.write(Buffer chunk, Callback? callback)

Writes some PCM data to be encoded. The buffer must contain PCM with the bps passed in the constructor, that is, if you want a 16 bps, the buffer must contain 16bps PCM. It will transform for you to 32bit buffer, that is the kind of data accepted by FLAC library.