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

   1 /*
   2  *
   3  *  $Id$
   4  *
   5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21 #ifndef __PVRUSB2_UTIL_H
  22 #define __PVRUSB2_UTIL_H
  23
  24 #define PVR2_DECOMPOSE_LE(t,i,d) \
  25     do {    \
  26         (t)[i] = (d) & 0xff;\
  27         (t)[i+1] = ((d) >> 8) & 0xff;\
  28         (t)[i+2] = ((d) >> 16) & 0xff;\
  29         (t)[i+3] = ((d) >> 24) & 0xff;\
  30     } while(0)
  31
  32 #define PVR2_DECOMPOSE_BE(t,i,d) \
  33     do {    \
  34         (t)[i+3] = (d) & 0xff;\
  35         (t)[i+2] = ((d) >> 8) & 0xff;\
  36         (t)[i+1] = ((d) >> 16) & 0xff;\
  37         (t)[i] = ((d) >> 24) & 0xff;\
  38     } while(0)
  39
  40 #define PVR2_COMPOSE_LE(t,i) \
  41     ((((u32)((t)[i+3])) << 24) | \
  42      (((u32)((t)[i+2])) << 16) | \
  43      (((u32)((t)[i+1])) << 8) | \
  44      ((u32)((t)[i])))
  45
  46 #define PVR2_COMPOSE_BE(t,i) \
  47     ((((u32)((t)[i])) << 24) | \
  48      (((u32)((t)[i+1])) << 16) | \
  49      (((u32)((t)[i+2])) << 8) | \
  50      ((u32)((t)[i+3])))
  51
  52
  53 #endif /* __PVRUSB2_UTIL_H */
  54
  55 /*
  56   Stuff for Emacs to see, in order to encourage consistent editing style:
  57   *** Local Variables: ***
  58   *** mode: c ***
  59   *** fill-column: 75 ***
  60   *** tab-width: 8 ***
  61   *** c-basic-offset: 8 ***
  62   *** End: ***
  63   */