modules/access/dvb/dvb.h

   1 /*****************************************************************************
   2  * dvb.h : functions to control a DVB card under Linux with v4l2
   3  *****************************************************************************
   4  * Copyright (C) 1998-2005 the VideoLAN team
   5  *
   6  * Authors: Johan Bilien <jobi@via.ecp.fr>
   7  *          Jean-Paul Saman <jpsaman _at_ videolan _dot_ org>
   8  *          Christopher Ross <chris@tebibyte.org>
   9  *          Christophe Massiot <massiot@via.ecp.fr>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.    See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA    02111, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Local structures
  28  *****************************************************************************/
  29 typedef struct demux_handle_t
  30 {
  31     int i_pid;
  32     int i_handle;
  33     int i_type;
  34 } demux_handle_t;
  35
  36 typedef struct frontend_t frontend_t;
  37 typedef struct
  38 {
  39     int i_snr;              /**< Signal Noise ratio */
  40     int i_ber;              /**< Bitrate error ratio */
  41     int i_signal_strenth;   /**< Signal strength */
  42 } frontend_statistic_t;
  43
  44 typedef struct
  45 {
  46     bool b_has_signal;
  47     bool b_has_carrier;
  48     bool b_has_lock;
  49 } frontend_status_t;
  50
  51 #define MAX_DEMUX 256
  52
  53 struct scan_t;
  54 struct scan_parameter_t;
  55
  56 struct access_sys_t
  57 {
  58     int i_handle, i_frontend_handle;
  59     demux_handle_t p_demux_handles[MAX_DEMUX];
  60     frontend_t *p_frontend;
  61     mtime_t i_frontend_timeout;
  62     bool b_budget_mode;
  63
  64     struct cam *p_cam;
  65
  66     /* */
  67     int i_read_once;
  68
  69     int i_stat_counter;
  70
  71     /* Scan */
  72     struct scan_t *scan;
  73 };
  74
  75 #define VIDEO0_TYPE     1
  76 #define AUDIO0_TYPE     2
  77 #define TELETEXT0_TYPE  3
  78 #define SUBTITLE0_TYPE  4
  79 #define PCR0_TYPE       5
  80 #define TYPE_INTERVAL   5
  81 #define OTHER_TYPE     21
  82
  83 /*****************************************************************************
  84  * Prototypes
  85  *****************************************************************************/
  86
  87 int  FrontendOpen( access_t * );
  88 void FrontendPoll( access_t *p_access );
  89 int  FrontendSet( access_t * );
  90 void FrontendClose( access_t * );
  91
  92 int  FrontendGetStatistic( access_t *, frontend_statistic_t * );
  93 void FrontendGetStatus( access_t *, frontend_status_t * );
  94 int  FrontendGetScanParameter( access_t *, struct scan_parameter_t * );
  95
  96 int DMXSetFilter( access_t *, int i_pid, int * pi_fd, int i_type );
  97 int DMXUnsetFilter( access_t *, int i_fd );
  98
  99 int  DVROpen( access_t * );
 100 void DVRClose( access_t * );