GstAudio.AudioSrc

Subclasses:

None

Methods

Inherited:

GstAudio.AudioBaseSrc (5), GstBase.BaseSrc (23), Gst.Element (82), Gst.Object (27), GObject.Object (37)

Structs:

Gst.ElementClass (10), GObject.ObjectClass (5)

Virtual Methods

Inherited:

GstAudio.AudioBaseSrc (1), GstBase.PushSrc (3), GstBase.BaseSrc (19), Gst.Element (16), Gst.Object (1), GObject.Object (7)

	do_close ()
	do_delay ()
	do_open ()
	do_prepare (spec)
	do_read (data)
	do_reset ()
	do_unprepare ()

Properties

Inherited:

GstAudio.AudioBaseSrc (6), GstBase.BaseSrc (5), Gst.Object (2)

Signals

Inherited:

Gst.Element (3), Gst.Object (1), GObject.Object (1)

Fields

Inherited:

Gst.Element (3), Gst.Object (1), GObject.Object (1)

Name	Type	Access	Description
element	GstAudio.AudioBaseSrc	r
thread	GLib.Thread	r

Class Details

class GstAudio.AudioSrc(**kwargs)

Bases:

GstAudio.AudioBaseSrc

Abstract:

No

Structure:

GstAudio.AudioSrcClass

This is the most simple base class for audio sources that only requires subclasses to implement a set of simple functions:

• open() :Open the device.

• prepare() :Configure the device with the specified format.

• read() :Read samples from the device.

• reset() :Unblock reads and flush the device.

• delay() :Get the number of samples in the device but not yet read.

• unprepare() :Undo operations done by prepare.

• close() :Close the device.

All scheduling of samples and timestamps is done in this base class together with GstAudio.AudioBaseSrc using a default implementation of a GstAudio.AudioRingBuffer that uses threads.

do_close() virtual

Return type:

bool

close the device

do_delay() virtual

Return type:

int

the number of frames queued in the device

do_open() virtual

Return type:

bool

open the device with the specified caps

do_prepare(spec) virtual

Parameters:

spec (GstAudio.AudioRingBufferSpec) –

Return type:

bool

configure device with format

do_read(data) virtual

Parameters:

data (bytes) – the sample data

Returns:

timestamp:

a #GstClockTime

Return type:

(int, timestamp: int)

Read samples from the device.

do_reset() virtual

unblock a read to the device and reset.

do_unprepare() virtual

Return type:

bool

undo the configuration