snd_pcm_new_internal — create a new internal PCM instance
int snd_pcm_new_internal ( | struct snd_card * card, |
| const char * id, | |
| int device, | |
| int playback_count, | |
| int capture_count, | |
struct snd_pcm ** rpcm); |
cardthe card instance
idthe id string
devicethe device index (zero based - shared with normal PCMs)
playback_countthe number of substreams for playback
capture_countthe number of substreams for capture
rpcmthe pointer to store the new pcm instance
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.