GstAudioChannelMixer


GstAudio.AudioChannelMixer


GstAudio.AudioChannelMixer


Methods

gst_audio_channel_mixer_free

gst_audio_channel_mixer_free (GstAudioChannelMixer * mix)

Free memory allocated by mix.

Parameters:


GstAudio.AudioChannelMixer.free

def GstAudio.AudioChannelMixer.free (self):
    #python wrapper for 'gst_audio_channel_mixer_free'

Free memory allocated by mix.


GstAudio.AudioChannelMixer.prototype.free

function GstAudio.AudioChannelMixer.prototype.free(): {
    // javascript wrapper for 'gst_audio_channel_mixer_free'
}

Free memory allocated by mix.


gst_audio_channel_mixer_is_passthrough

gboolean
gst_audio_channel_mixer_is_passthrough (GstAudioChannelMixer * mix)

Check if mix is in passthrough.

Only N x N mix identity matrices are considered passthrough, this is determined by comparing the contents of the matrix with 0.0 and 1.0.

As this is floating point comparisons, if the values have been generated, they should be rounded up or down by explicit assignment of 0.0 or 1.0 to values within a user-defined epsilon, this code doesn't make assumptions as to what may constitute an appropriate epsilon.

Parameters:

Returns

TRUE is mix is passthrough.


GstAudio.AudioChannelMixer.is_passthrough

def GstAudio.AudioChannelMixer.is_passthrough (self):
    #python wrapper for 'gst_audio_channel_mixer_is_passthrough'

Check if mix is in passthrough.

Only N x N mix identity matrices are considered passthrough, this is determined by comparing the contents of the matrix with 0.0 and 1.0.

As this is floating point comparisons, if the values have been generated, they should be rounded up or down by explicit assignment of 0.0 or 1.0 to values within a user-defined epsilon, this code doesn't make assumptions as to what may constitute an appropriate epsilon.

Returns ( bool ) –

True is mix is passthrough.


GstAudio.AudioChannelMixer.prototype.is_passthrough

function GstAudio.AudioChannelMixer.prototype.is_passthrough(): {
    // javascript wrapper for 'gst_audio_channel_mixer_is_passthrough'
}

Check if mix is in passthrough.

Only N x N mix identity matrices are considered passthrough, this is determined by comparing the contents of the matrix with 0.0 and 1.0.

As this is floating point comparisons, if the values have been generated, they should be rounded up or down by explicit assignment of 0.0 or 1.0 to values within a user-defined epsilon, this code doesn't make assumptions as to what may constitute an appropriate epsilon.

Returns ( Number ) –

true is mix is passthrough.


gst_audio_channel_mixer_samples

gst_audio_channel_mixer_samples (GstAudioChannelMixer * mix,
                                 const gpointer * in,
                                 gpointer * out,
                                 gint samples)

In case the samples are interleaved, in and out must point to an array with a single element pointing to a block of interleaved samples.

If non-interleaved samples are used, in and out must point to an array with pointers to memory blocks, one for each channel.

Perform channel mixing on in_data and write the result to out_data. in_data and out_data need to be in format and layout.

Parameters:

in

input samples

out

output samples

samples

number of samples


GstAudio.AudioChannelMixer.samples

def GstAudio.AudioChannelMixer.samples (self, in, out, samples):
    #python wrapper for 'gst_audio_channel_mixer_samples'

In case the samples are interleaved, in and out must point to an array with a single element pointing to a block of interleaved samples.

If non-interleaved samples are used, in and out must point to an array with pointers to memory blocks, one for each channel.

Perform channel mixing on in_data and write the result to out_data. in_data and out_data need to be in format and layout.

Parameters:

in ( object ) –

input samples

out ( object ) –

output samples

samples ( int ) –

number of samples


GstAudio.AudioChannelMixer.prototype.samples

function GstAudio.AudioChannelMixer.prototype.samples(in: Object, out: Object, samples: Number): {
    // javascript wrapper for 'gst_audio_channel_mixer_samples'
}

In case the samples are interleaved, in and out must point to an array with a single element pointing to a block of interleaved samples.

If non-interleaved samples are used, in and out must point to an array with pointers to memory blocks, one for each channel.

Perform channel mixing on in_data and write the result to out_data. in_data and out_data need to be in format and layout.

Parameters:

in ( Object ) –

input samples

out ( Object ) –

output samples

samples ( Number ) –

number of samples


Functions

gst_audio_channel_mixer_new

GstAudioChannelMixer *
gst_audio_channel_mixer_new (GstAudioChannelMixerFlags flags,
                             GstAudioFormat format,
                             gint in_channels,
                             GstAudioChannelPosition * in_position,
                             gint out_channels,
                             GstAudioChannelPosition * out_position)

Create a new channel mixer object for the given parameters.

Parameters:

format
No description available
in_channels

number of input channels

in_position

positions of input channels

out_channels

number of output channels

out_position

positions of output channels

Returns

a new GstAudioChannelMixer object, or NULL if format isn't supported. Free with gst_audio_channel_mixer_free after usage.


gst_audio_channel_mixer_new_with_matrix

GstAudioChannelMixer *
gst_audio_channel_mixer_new_with_matrix (GstAudioChannelMixerFlags flags,
                                         GstAudioFormat format,
                                         gint in_channels,
                                         gint out_channels,
                                         gfloat ** matrix)

Create a new channel mixer object for the given parameters.

Parameters:

format
No description available
in_channels

number of input channels

out_channels

number of output channels

matrix ( [transfer: full] [nullable] ) –

channel conversion matrix, m[@in_channels][@out_channels]. If identity matrix, passthrough applies. If NULL, a (potentially truncated) identity matrix is generated.

Returns

a new GstAudioChannelMixer object, or NULL if format isn't supported, matrix is invalid, or matrix is NULL and in_channels != out_channels. Free with gst_audio_channel_mixer_free after usage.

Since : 1.14


Enumerations

GstAudioChannelMixerFlags

Flags passed to gst_audio_channel_mixer_new

Members

GST_AUDIO_CHANNEL_MIXER_FLAGS_NONE (0) –

no flag

GST_AUDIO_CHANNEL_MIXER_FLAGS_NON_INTERLEAVED_IN (1) –

input channels are not interleaved

GST_AUDIO_CHANNEL_MIXER_FLAGS_NON_INTERLEAVED_OUT (2) –

output channels are not interleaved

GST_AUDIO_CHANNEL_MIXER_FLAGS_UNPOSITIONED_IN (4) –

input channels are explicitly unpositioned

GST_AUDIO_CHANNEL_MIXER_FLAGS_UNPOSITIONED_OUT (8) –

output channels are explicitly unpositioned


GstAudio.AudioChannelMixerFlags

Flags passed to gst_audio_channel_mixer_new (not introspectable)

Members

GstAudio.AudioChannelMixerFlags.NONE (0) –

no flag

GstAudio.AudioChannelMixerFlags.NON_INTERLEAVED_IN (1) –

input channels are not interleaved

GstAudio.AudioChannelMixerFlags.NON_INTERLEAVED_OUT (2) –

output channels are not interleaved

GstAudio.AudioChannelMixerFlags.UNPOSITIONED_IN (4) –

input channels are explicitly unpositioned

GstAudio.AudioChannelMixerFlags.UNPOSITIONED_OUT (8) –

output channels are explicitly unpositioned


GstAudio.AudioChannelMixerFlags

Flags passed to gst_audio_channel_mixer_new (not introspectable)

Members

GstAudio.AudioChannelMixerFlags.NONE (0) –

no flag

GstAudio.AudioChannelMixerFlags.NON_INTERLEAVED_IN (1) –

input channels are not interleaved

GstAudio.AudioChannelMixerFlags.NON_INTERLEAVED_OUT (2) –

output channels are not interleaved

GstAudio.AudioChannelMixerFlags.UNPOSITIONED_IN (4) –

input channels are explicitly unpositioned

GstAudio.AudioChannelMixerFlags.UNPOSITIONED_OUT (8) –

output channels are explicitly unpositioned


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