snd_pcm_lib_preallocate_pages_for_all (9) Linux Manual Page
snd_pcm_lib_preallocate_pages_for_all – pre-allocation for continuous memory type (all substreams)
Synopsis
int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, int type, void *data, size_t size, size_t max);Arguments
pcm
-
- the pcm instance
type
- DMA type (SNDRV_DMA_TYPE_*)
data
- DMA type dependent data
size
- the requested pre-allocation size in bytes
max
- the max. allowed pre-allocation size
Description
Do pre-allocation to all substreams of the given pcm for the specified DMA type.
Return
Zero if successful, or a negative error code on failure.