snd_pcm_new_internal(9)

Usage

int snd_pcm_new_internal(struct snd_card * card, const char * id, int device, int playback_count, int capture_count, struct snd_pcm ** rpcm);

Arguments

card

the card instance

id

the id string

device

the device index (zero based - shared with normal PCMs)

playback_count

the number of substreams for playback

capture_count

the number of substreams for capture

rpcm

the pointer to store the new pcm instance

Overview

Creates a new internal PCM instance with no userspace device or procfs entries. This is used by ASoC Back End PCMs in order to create a PCM that will only be used internally by kernel drivers. i.e. it cannot be opened by userspace. It provides existing ASoC components drivers with a substream and access to any private data.

The pcm operators have to be set afterwards to the new instance via snd_pcm_set_ops.

Return

Zero if successful, or a negative error code on failure.

Releases

2 releases since Debian 8 (Jessie); the text changed 1 time.

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