Description

ALSA interface module. An interface to connect AVTP streams to ALSA either as an audio source or sink.

Interface module configuration parameters

Name	Description
intf_nv_ignore_timestamp	If set to 1 timestamps will be ignored during processing of frames. This also means stale (old) Media Queue items will not be purged.
intf_nv_device_name	ALSA device name. Commonly "default" or "plug:dmix"
intf_nv_audio_rate	Audio rate, numberic values defined by avb_audio_rate_t
intf_nv_audio_bit_depth	Bit depth of audio, numeric values defined by avb_audio_bit_depth_t
intf_nv_audio_type	Type of data samples, possible values float sign unsign int uint
intf_nv_audio_endian	Data endianess possible values big little
intf_nv_audio_channels	Number of audio channels, numeric values should be within range of values in avb_audio_channels_t
intf_nv_allow_resampling	If 1 software resampling allowed, disallowed otherwise (by default allowed)
intf_nv_start_threshold_periods	Playback start threshold measured in ALSA periods (2 by default)
intf_nv_period_time	Approximate ALSA period duration in microseconds

There are some parameters that have to be set during configuration of this interface module and before configuring mapping:

These parameters can be set in either:

in the ini file (or available configuration system), so values will be parsed in the intf_cfg_cb function,
in the interface module initialization function where valid values can be assigned directly

Values assigned in the intf_cfg_cb function will override any values set in the initialization function.