release/src-rt-6.x/linux/linux-2.6/sound/usb/usx2y/usx2yhwdeppcm.h

   1 #define MAXPACK 50
   2 #define MAXBUFFERMS 100
   3 #define MAXSTRIDE 3
   4
   5 #define SSS (((MAXPACK*MAXBUFFERMS*MAXSTRIDE + 4096) / 4096) * 4096)
   6 struct snd_usX2Y_hwdep_pcm_shm {
   7         char playback[SSS];
   8         char capture0x8[SSS];
   9         char capture0xA[SSS];
  10         volatile int playback_iso_head;
  11         int playback_iso_start;
  12         struct {
  13                 int     frame,
  14                         offset,
  15                         length;
  16         } captured_iso[128];
  17         volatile int captured_iso_head;
  18         volatile unsigned captured_iso_frames;
  19         int capture_iso_start;
  20 };