git.rot13.org Git - librfid/blob - src/rfid_reader.c

   1 /* librfid - core reader handling
   2  * (C) 2005-2006 by Harald Welte <laforge@gnumonks.org>
   3  */
   4
   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 version 2
   8  *  as published by the Free Software Foundation
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22
  23 #include <librfid/rfid.h>
  24 #include <librfid/rfid_reader.h>
  25 #include <librfid/rfid_reader_cm5121.h>
  26 #include <librfid/rfid_reader_openpcd.h>
  27 #include <librfid/rfid_reader_spidev.h>
  28
  29 static const struct rfid_reader *rfid_readers[] = {
  30 #ifdef HAVE_LIBUSB
  31 #ifdef ENABLE_CM5121
  32         [RFID_READER_CM5121]    = &rfid_reader_cm5121,
  33 #endif
  34         [RFID_READER_OPENPCD]   = &rfid_reader_openpcd,
  35 #endif
  36 #ifdef ENABLE_SPIDEV
  37         [RFID_READER_SPIDEV]    = &rfid_reader_spidev,
  38 #endif
  39 };
  40
  41 struct rfid_reader_handle *
  42 rfid_reader_open(void *data, unsigned int id)
  43 {
  44         const struct rfid_reader *p;
  45
  46         if (id >= ARRAY_SIZE(rfid_readers)) {
  47                 DEBUGP("unable to find matching reader\n");
  48                 return NULL;
  49         }
  50
  51         p = rfid_readers[id];
  52         if (!p)
  53                 return NULL;
  54
  55         return p->open(data);
  56 }
  57
  58 int
  59 rfid_reader_transceive(struct rfid_reader_handle *rh,
  60                         enum rfid_frametype frametype,
  61                          const unsigned char *tx_buf, unsigned int len,
  62                          unsigned char *rx_buf, unsigned int *rx_len,
  63                          u_int64_t timeout, unsigned int flags)
  64 {
  65         return rh->reader->transceive(rh, frametype, tx_buf, len, rx_buf,
  66                                       rx_len, timeout, flags);
  67 }
  68
  69 void
  70 rfid_reader_close(struct rfid_reader_handle *rh)
  71 {
  72         rh->reader->close(rh);
  73 }
  74
  75 int
  76 rfid_reader_getopt(struct rfid_reader_handle *rh, int optname,
  77                    void *optval, unsigned int *optlen)
  78 {
  79         return rh->reader->getopt(rh, optname, optval, optlen);
  80 }
  81
  82 int rfid_reader_setopt(struct rfid_reader_handle *rh, int optname,
  83                        const void *optval, unsigned int optlen)
  84 {
  85         return rh->reader->setopt(rh, optname, optval, optlen);
  86 }