drivers/media/usb/pvrusb2/pvrusb2-util.h

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  */
  16 #ifndef __PVRUSB2_UTIL_H
  17 #define __PVRUSB2_UTIL_H
  18
  19 #define PVR2_DECOMPOSE_LE(t,i,d) \
  20     do {    \
  21         (t)[i] = (d) & 0xff;\
  22         (t)[i+1] = ((d) >> 8) & 0xff;\
  23         (t)[i+2] = ((d) >> 16) & 0xff;\
  24         (t)[i+3] = ((d) >> 24) & 0xff;\
  25     } while(0)
  26
  27 #define PVR2_DECOMPOSE_BE(t,i,d) \
  28     do {    \
  29         (t)[i+3] = (d) & 0xff;\
  30         (t)[i+2] = ((d) >> 8) & 0xff;\
  31         (t)[i+1] = ((d) >> 16) & 0xff;\
  32         (t)[i] = ((d) >> 24) & 0xff;\
  33     } while(0)
  34
  35 #define PVR2_COMPOSE_LE(t,i) \
  36     ((((u32)((t)[i+3])) << 24) | \
  37      (((u32)((t)[i+2])) << 16) | \
  38      (((u32)((t)[i+1])) << 8) | \
  39      ((u32)((t)[i])))
  40
  41 #define PVR2_COMPOSE_BE(t,i) \
  42     ((((u32)((t)[i])) << 24) | \
  43      (((u32)((t)[i+1])) << 16) | \
  44      (((u32)((t)[i+2])) << 8) | \
  45      ((u32)((t)[i+3])))
  46
  47
  48 #endif /* __PVRUSB2_UTIL_H */