GstAudioSrc

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 GstAudioBaseSrc using a default implementation of a GstAudioRingBuffer that uses threads.

GstAudioSrc

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBaseSrc
                    ╰──GstPushSrc
                        ╰──GstAudioBaseSrc
                            ╰──GstAudioSrc

Base class for simple audio sources.

Members

element (GstAudioBaseSrc) –
No description available

Class structure

GstAudioSrcClass

GstAudioSrc class. Override the vmethod to implement functionality.

Fields
parent_class (GstAudioBaseSrcClass) –

the parent class.


GstAudio.AudioSrcClass

GstAudio.AudioSrc class. Override the vmethod to implement functionality.

Attributes
parent_class (GstAudio.AudioBaseSrcClass) –

the parent class.


GstAudio.AudioSrcClass

GstAudio.AudioSrc class. Override the vmethod to implement functionality.

Attributes
parent_class (GstAudio.AudioBaseSrcClass) –

the parent class.


GstAudioSrc

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBaseSrc
                    ╰──GstPushSrc
                        ╰──GstAudioBaseSrc
                            ╰──GstAudioSrc

Base class for simple audio sources.

Members

element (GstAudioBaseSrc) –
No description available

GstAudioSrc

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstBaseSrc
                    ╰──GstPushSrc
                        ╰──GstAudioBaseSrc
                            ╰──GstAudioSrc

Base class for simple audio sources.

Members

element (GstAudioBaseSrc) –
No description available

Virtual Methods

close

gboolean
close (GstAudioSrc * src)

close the device

Parameters:

src
No description available
Returns
No description available

do_close

def do_close (src):
    #python implementation of the 'close' virtual method

close the device

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( bool ) –
No description available

vfunc_close

function vfunc_close(src: GstAudio.AudioSrc): {
    // javascript implementation of the 'close' virtual method
}

close the device

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( Number ) –
No description available

delay

guint
delay (GstAudioSrc * src)

the number of frames queued in the device

Parameters:

src
No description available
Returns
No description available

do_delay

def do_delay (src):
    #python implementation of the 'delay' virtual method

the number of frames queued in the device

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( int ) –
No description available

vfunc_delay

function vfunc_delay(src: GstAudio.AudioSrc): {
    // javascript implementation of the 'delay' virtual method
}

the number of frames queued in the device

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( Number ) –
No description available

open

gboolean
open (GstAudioSrc * src)

open the device with the specified caps

Parameters:

src
No description available
Returns
No description available

do_open

def do_open (src):
    #python implementation of the 'open' virtual method

open the device with the specified caps

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( bool ) –
No description available

vfunc_open

function vfunc_open(src: GstAudio.AudioSrc): {
    // javascript implementation of the 'open' virtual method
}

open the device with the specified caps

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( Number ) –
No description available

prepare

gboolean
prepare (GstAudioSrc * src,
         GstAudioRingBufferSpec * spec)

configure device with format

Parameters:

src
No description available
spec
No description available
Returns
No description available

do_prepare

def do_prepare (src, spec):
    #python implementation of the 'prepare' virtual method

configure device with format

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
No description available
Returns ( bool ) –
No description available

vfunc_prepare

function vfunc_prepare(src: GstAudio.AudioSrc, spec: GstAudio.AudioRingBufferSpec): {
    // javascript implementation of the 'prepare' virtual method
}

configure device with format

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
No description available
Returns ( Number ) –
No description available

read

guint
read (GstAudioSrc * src,
      gpointer data,
      guint length,
      GstClockTime * timestamp)

read samples from the audio device

Parameters:

src
No description available
data
No description available
length
No description available
timestamp
No description available
Returns
No description available

do_read

def do_read (src, data, length, timestamp):
    #python implementation of the 'read' virtual method

read samples from the audio device

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
data ( object ) –
No description available
length ( int ) –
No description available
timestamp ( int ) –
No description available
Returns ( int ) –
No description available

vfunc_read

function vfunc_read(src: GstAudio.AudioSrc, data: Object, length: Number, timestamp: Number): {
    // javascript implementation of the 'read' virtual method
}

read samples from the audio device

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
data ( Object ) –
No description available
length ( Number ) –
No description available
timestamp ( Number ) –
No description available
Returns ( Number ) –
No description available

reset

reset (GstAudioSrc * src)

unblock a read to the device and reset.

Parameters:

src
No description available

do_reset

def do_reset (src):
    #python implementation of the 'reset' virtual method

unblock a read to the device and reset.

Parameters:

src ( GstAudio.AudioSrc ) –
No description available

vfunc_reset

function vfunc_reset(src: GstAudio.AudioSrc): {
    // javascript implementation of the 'reset' virtual method
}

unblock a read to the device and reset.

Parameters:

src ( GstAudio.AudioSrc ) –
No description available

unprepare

gboolean
unprepare (GstAudioSrc * src)

undo the configuration

Parameters:

src
No description available
Returns
No description available

do_unprepare

def do_unprepare (src):
    #python implementation of the 'unprepare' virtual method

undo the configuration

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( bool ) –
No description available

vfunc_unprepare

function vfunc_unprepare(src: GstAudio.AudioSrc): {
    // javascript implementation of the 'unprepare' virtual method
}

undo the configuration

Parameters:

src ( GstAudio.AudioSrc ) –
No description available
Returns ( Number ) –
No description available

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