include/media/ir-common.h

   1 /*
   2  * $Id: ir-common.h,v 1.8 2005/02/22 12:28:40 kraxel Exp $
   3  *
   4  * some common structs and functions to handle infrared remotes via
   5  * input layer ...
   6  *
   7  * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include <linux/version.h>
  25 #include <linux/input.h>
  26
  27
  28 #define IR_TYPE_RC5     1
  29 #define IR_TYPE_OTHER  99
  30
  31 #define IR_KEYTAB_TYPE  u32
  32 #define IR_KEYTAB_SIZE  128  // enougth for rc5, probably need more some day ...
  33
  34 #define IR_KEYCODE(tab,code)    (((unsigned)code < IR_KEYTAB_SIZE) \
  35                                  ? tab[code] : KEY_RESERVED)
  36
  37 struct ir_input_state {
  38         /* configuration */
  39         int                ir_type;
  40         IR_KEYTAB_TYPE     ir_codes[IR_KEYTAB_SIZE];
  41
  42         /* key info */
  43         u32                ir_raw;      /* raw data */
  44         u32                ir_key;      /* ir key code */
  45         u32                keycode;     /* linux key code */
  46         int                keypressed;  /* current state */
  47 };
  48
  49 extern IR_KEYTAB_TYPE ir_codes_rc5_tv[IR_KEYTAB_SIZE];
  50 extern IR_KEYTAB_TYPE ir_codes_winfast[IR_KEYTAB_SIZE];
  51 extern IR_KEYTAB_TYPE ir_codes_empty[IR_KEYTAB_SIZE];
  52 extern IR_KEYTAB_TYPE ir_codes_hauppauge_new[IR_KEYTAB_SIZE];
  53
  54 void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
  55                    int ir_type, IR_KEYTAB_TYPE *ir_codes);
  56 void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir);
  57 void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
  58                       u32 ir_key, u32 ir_raw);
  59 u32  ir_extract_bits(u32 data, u32 mask);
  60 int  ir_dump_samples(u32 *samples, int count);
  61 int  ir_decode_biphase(u32 *samples, int count, int low, int high);
  62
  63 /*
  64  * Local variables:
  65  * c-basic-offset: 8
  66  * End:
  67  */