snd_dma_pointer(9) centos man page | unix.com

SND_DMA_POINTER(9)					      Miscellaneous Functions						SND_DMA_POINTER(9)

NAME
       snd_dma_pointer - return the current pointer to DMA transfer buffer in bytes

SYNOPSIS
       unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);

ARGUMENTS
       dma
	   the dma number

       size
	   the dma transfer size

RETURN
       The current pointer in DMA transfer buffer in bytes.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							SND_DMA_POINTER(9)