_output_plugin Struct Reference

#include <output_plugin.h>

Data Fields
output_version_type	version
char *	name
char *	author
output_init_type	init
output_open_type	open
output_close_type	close
output_write_type	write
output_start_callbacks_type	start_callbacks
output_set_buffer_type	set_buffer
output_set_sample_rate_type	set_sample_rate
output_get_queue_count_type	get_queue_count
output_get_latency_type	get_latency

---

Field Documentation

output_version_type _output_plugin::version

Version of output plugin. Must be OUTPUT_PLUGIN_VERSION

char* _output_plugin::name

Name of output plugin

char* _output_plugin::author

Author of the plugin

output_init_type _output_plugin::init

Initialize output plugin. Called before the plugin is opened for use

output_open_type _output_plugin::open

Parameters:

path

The path or device designation that should be used

Opens the output plugin. A value of 1 should be returned on success, 0 on failure.

output_close_type _output_plugin::close

Close the output plugin

output_write_type _output_plugin::write

Parameters:

data

Buffer that contains the data Number of bytes that should be read from the buffer

Write out data to the output device. This is a byte count and will typically be the same size as a fragment. A value of 1 should be returned on success, 0 on failure.

output_start_callbacks_type _output_plugin::start_callbacks

Parameters:

data

pointer to bufs structure in AlsaNode

This function is used for callback based plugins like JACK

output_set_buffer_type _output_plugin::set_buffer

Parameters:

	frag_size	Fragment size to use (in bytes)
	frag_count	Fragment count to use (in bytes)
	channels	Number of channels to use

Set up the output device with the given parameters. Some output devices do not accept such configurations in which case they should just be ignored, but still expect frag_size data chunks in the write function. A value of 1 should be returned on success, 0 on failure.

output_set_sample_rate_type _output_plugin::set_sample_rate

Parameters:

rate

Sample rate to use

Set the sample rate of the output device. A value of 1 should be returned on success, 0 on failure.

output_get_queue_count_type _output_plugin::get_queue_count

Returns the number of bytes pending in the hardware buffer of output device. This function is optional.

output_get_latency_type _output_plugin::get_latency

Returns the latency of the output device in bytes. This function is optional.

---

The documentation for this struct was generated from the following file:

• output_plugin.h