1#define MAXPACK 50 2#define MAXBUFFERMS 100 3#define MAXSTRIDE 3 4 5#define SSS (((MAXPACK*MAXBUFFERMS*MAXSTRIDE + 4096) / 4096) * 4096) 6struct 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}; 21 22int usX2Y_hwdep_pcm_new(struct snd_card *card); 23