drivers/media/video/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  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20 #ifndef __PVRUSB2_UTIL_H
  21 #define __PVRUSB2_UTIL_H
  22
  23 #define PVR2_DECOMPOSE_LE(t,i,d) \
  24     do {    \
  25         (t)[i] = (d) & 0xff;\
  26         (t)[i+1] = ((d) >> 8) & 0xff;\
  27         (t)[i+2] = ((d) >> 16) & 0xff;\
  28         (t)[i+3] = ((d) >> 24) & 0xff;\
  29     } while(0)
  30
  31 #define PVR2_DECOMPOSE_BE(t,i,d) \
  32     do {    \
  33         (t)[i+3] = (d) & 0xff;\
  34         (t)[i+2] = ((d) >> 8) & 0xff;\
  35         (t)[i+1] = ((d) >> 16) & 0xff;\
  36         (t)[i] = ((d) >> 24) & 0xff;\
  37     } while(0)
  38
  39 #define PVR2_COMPOSE_LE(t,i) \
  40     ((((u32)((t)[i+3])) << 24) | \
  41      (((u32)((t)[i+2])) << 16) | \
  42      (((u32)((t)[i+1])) << 8) | \
  43      ((u32)((t)[i])))
  44
  45 #define PVR2_COMPOSE_BE(t,i) \
  46     ((((u32)((t)[i])) << 24) | \
  47      (((u32)((t)[i+1])) << 16) | \
  48      (((u32)((t)[i+2])) << 8) | \
  49      ((u32)((t)[i+3])))
  50
  51
  52 #endif /* __PVRUSB2_UTIL_H */
  53
  54 /*
  55   Stuff for Emacs to see, in order to encourage consistent editing style:
  56   *** Local Variables: ***
  57   *** mode: c ***
  58   *** fill-column: 75 ***
  59   *** tab-width: 8 ***
  60   *** c-basic-offset: 8 ***
  61   *** End: ***
  62   */