wavpackenc

wavpackenc

Properties

guint bitrate Read / Write
gdouble bits-per-sample Read / Write
GstWavpackEncCorrectionMode correction-mode Read / Write
guint extra-processing Read / Write
GstWavpackEncJSMode joint-stereo-mode Read / Write
gboolean md5 Read / Write
GstWavpackEncMode mode Read / Write

Types and Values

struct GstWavpackEnc

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstAudioEncoder
                    ╰── GstWavpackEnc

Implemented Interfaces

GstWavpackEnc implements GstPreset.

Description

WavpackEnc encodes raw audio into a framed Wavpack stream.

Wavpack is an open-source

audio codec that features both lossless and lossy encoding.

Example launch line

1
 
gst-launch-1.0 audiotestsrc num-buffers=500 ! audioconvert ! wavpackenc ! filesink location=sinewave.wv
This pipeline encodes audio from audiotestsrc into a Wavpack file. The audioconvert element is needed as the Wavpack encoder only accepts input with 32 bit width. 
1
 
gst-launch-1.0 cdda://1 ! audioconvert ! wavpackenc ! filesink location=track1.wv
This pipeline encodes audio from an audio CD into a Wavpack file using lossless encoding (the file output will be fairly large). 
1
 
gst-launch-1.0 cdda://1 ! audioconvert ! wavpackenc bitrate=128000 ! filesink location=track1.wv
This pipeline encodes audio from an audio CD into a Wavpack file using lossy encoding at a certain bitrate (the file will be fairly small).

Synopsis

Element Information

plugin

 wavpack

author

 Sebastian Dröge <slomo@circular-chaos.org>

class

 Codec/Encoder/Audio

Element Pads

name

 sink

direction

 sink

presence

 always

details

 audio/x-raw, format=(string)S32LE, layout=(string)interleaved, channels=(int)[ 1, 8 ], rate=(int)[ 6000, 192000 ]

name

 src

direction

 source

presence

 always

details

 audio/x-wavpack, depth=(int)[ 1, 32 ], channels=(int)[ 1, 8 ], rate=(int)[ 6000, 192000 ], framed=(boolean)true

name

 wvcsrc

direction

 source

presence

 sometimes

details

 audio/x-wavpack-correction, framed=(boolean)true

Functions

Types and Values

struct GstWavpackEnc

struct GstWavpackEnc;

Property Details

The “bitrate” property

  “bitrate”                  guint

Try to encode with this average bitrate (bits/sec). This enables lossy encoding, values smaller than 24000 disable it again.

Flags: Read / Write

Allowed values: <= 9600000

Default value: 0

The “bits-per-sample” property

  “bits-per-sample”          gdouble

Try to encode with this amount of bits per sample. This enables lossy encoding, values smaller than 2.0 disable it again.

Flags: Read / Write

Allowed values: [0,24]

Default value: 0

The “correction-mode” property

  “correction-mode”          GstWavpackEncCorrectionMode

Use this mode for the correction stream. Only works in lossy mode!.

Flags: Read / Write

Default value: Create no correction file

The “extra-processing” property

  “extra-processing”         guint

Use better but slower filters for better compression/quality.

Flags: Read / Write

Allowed values: <= 6

Default value: 0

The “joint-stereo-mode” property

  “joint-stereo-mode”        GstWavpackEncJSMode

Use this joint-stereo mode.

Flags: Read / Write

Default value: auto

The “md5” property

  “md5”                      gboolean

Store MD5 hash of raw samples within the file.

Flags: Read / Write

Default value: FALSE

The “mode” property

  “mode”                     GstWavpackEncMode

Speed versus compression tradeoff.

Flags: Read / Write

Default value: Normal Compression

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