GstBtFluidSynth: GStreamer Buzztrax Reference Manual

GstBtFluidSynth

GstBtFluidSynth — FluidSynth GStreamer wrapper

Properties

gint	chorus-count	Read / Write
gdouble	chorus-depth	Read / Write
gboolean	chorus-enable	Read / Write
gdouble	chorus-freq	Read / Write
gdouble	chorus-level	Read / Write
GstBtFluidSynthChorusWaveform	chorus-waveform	Read / Write
gchar *	instrument-patch	Read / Write
GstBtFluidSynthInterpolationMode	interpolation	Read / Write
GstBtNote	note	Write
gint	note-length	Read / Write
gint	note-velocity	Read / Write
gint	program	Read / Write
gdouble	reverb-damp	Read / Write
gboolean	reverb-enable	Read / Write
gdouble	reverb-level	Read / Write
gdouble	reverb-room-size	Read / Write
gdouble	reverb-width	Read / Write

Types and Values

enum	GstBtFluidSynthInterpolationMode
enum	GstBtFluidSynthChorusWaveform
struct	GstBtFluidSynth

Object Hierarchy

    GEnum
    ├── GstBtFluidSynthChorusWaveform
    ╰── GstBtFluidSynthInterpolationMode
    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseSrc
                    ╰── GstBtAudioSynth
                        ╰── GstBtFluidSynth

Implemented Interfaces

GstBtFluidSynth implements GstPreset.

Description

FluidSynth is a SoundFont 2 capable wavetable synthesizer. Soundpatches are available on sounds.resonance.org. Distributions also have a few soundfonts packaged. The internet offers free patches for download.

When specifying a patch as a relative path, the element looks in common places for the files.

Example launch line

1	gst-launch-1.0 fluidsynth num-buffers=10 note="c-3" ! autoaudiosink

Plays one c-3 tone using the first instrument.

1	gst-launch-1.0 fluidsynth num-buffers=20 instrument-patch="Vintage_Dreams_Waves_v2.sf2" program=2 note="c-3" ! autoaudiosink

Load a specific patch and plays one c-3 tone using the second program.

Functions

Types and Values

enum GstBtFluidSynthInterpolationMode

Synthesis engine interpolation mode.

Members

GSTBT_FLUID_SYNTH_INTERPOLATION_MODE_NONE	no interpolation
GSTBT_FLUID_SYNTH_INTERPOLATION_MODE_LINEAR	linear interpolation
GSTBT_FLUID_SYNTH_INTERPOLATION_MODE_4THORDER	4th order interpolation
GSTBT_FLUID_SYNTH_INTERPOLATION_MODE_7THORDER	7th order interpolation

enum GstBtFluidSynthChorusWaveform

Modulation waveform for the chorus effect.

Members

GSTBT_FLUID_SYNTH_CHORUS_MOD_SINE	sine wave
GSTBT_FLUID_SYNTH_CHORUS_MOD_TRIANGLE	triangle wave

struct GstBtFluidSynth

struct GstBtFluidSynth;

Class instance data.

Property Details

The `“chorus-count”` property

  “chorus-count”             gint

Number of chorus delay lines.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [1,99]

Default value: 3

The `“chorus-depth”` property

  “chorus-depth”             gdouble

Chorus depth.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0,10]

Default value: 8

The `“chorus-enable”` property

  “chorus-enable”            gboolean

Chorus enable.

Owner: GstBtFluidSynth

Flags: Read / Write

Default value: TRUE

The `“chorus-freq”` property

  “chorus-freq”              gdouble

Chorus modulation frequency (Hz).

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0.3,5]

Default value: 0.3

The `“chorus-level”` property

  “chorus-level”             gdouble

Output level of each chorus line.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0,10]

Default value: 2

The `“chorus-waveform”` property

  “chorus-waveform”          GstBtFluidSynthChorusWaveform

Chorus waveform type.

Owner: GstBtFluidSynth

Flags: Read / Write

Default value: GSTBT_FLUID_SYNTH_CHORUS_MOD_SINE

The `“instrument-patch”` property

  “instrument-patch”         gchar *

Path to soundfont intrument patch file.

Owner: GstBtFluidSynth

Flags: Read / Write

Default value: NULL

The `“interpolation”` property

  “interpolation”            GstBtFluidSynthInterpolationMode

Synthesis Interpolation type.

Owner: GstBtFluidSynth

Flags: Read / Write

Default value: GSTBT_FLUID_SYNTH_INTERPOLATION_MODE_4THORDER

The `“note”` property

  “note”                     GstBtNote

Musical note (e.g. 'c-3', 'd#4').

Owner: GstBtFluidSynth

Flags: Write

Default value: NONE

The `“note-length”` property

  “note-length”              gint

Length of a note in ticks (buffers).

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [1,100]

Default value: 4

The `“note-velocity”` property

  “note-velocity”            gint

Velocity of a note.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0,127]

Default value: 100

The `“program”` property

  “program”                  gint

Sound program number.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0,16383]

Default value: 0

The `“reverb-damp”` property

  “reverb-damp”              gdouble

Reverb dampening.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0,1]

Default value: 0

The `“reverb-enable”` property

  “reverb-enable”            gboolean

Reverb enable.

Owner: GstBtFluidSynth

Flags: Read / Write

Default value: TRUE

The `“reverb-level”` property

  “reverb-level”             gdouble

Reverb level.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [-30,30]

Default value: 4

The `“reverb-room-size”` property

  “reverb-room-size”         gdouble

Reverb room size.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0,1.2]

Default value: 0.4

The `“reverb-width”` property

  “reverb-width”             gdouble

Reverb width.

Owner: GstBtFluidSynth

Flags: Read / Write

Allowed values: [0,100]

Default value: 2