snd_pcm_area_copy

function snd_pcm_area_copy(

  dst_channel: Psnd_pcm_channel_area_t;

  dst_offset: snd_pcm_uframes_t;

  src_channel: Psnd_pcm_channel_area_t;

  src_offset: snd_pcm_uframes_t;

  samples: cuint;

  format: snd_pcm_format_t

):cint;