modules/access/dvb/scan.h

   1 /*****************************************************************************
   2  * scan.h : functions to ease DVB scanning
   3  *****************************************************************************
   4  * Copyright (C) 2008 the VideoLAN team
   5  *
   6  * Authors: Laurent Aimar <fenrir@videolan.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.    See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA    02111, USA.
  21  *****************************************************************************/
  22
  23 #ifdef HAVE_DVBPSI_DR_H
  24 #ifdef _DVBPSI_DR_43_H_
  25 #   define DVBPSI_USE_NIT 1
  26 #   include <dvbpsi/nit.h>
  27 #endif
  28 #else
  29 #ifdef _DVBPSI_DR_43_H_
  30 #   define DVBPSI_USE_NIT 1
  31 #   include "nit.h"
  32 #endif
  33 #endif
  34
  35 #ifndef DVBPSI_USE_NIT
  36 #   warning NIT is not supported by your libdvbpsi version
  37 #endif
  38
  39 typedef enum
  40 {
  41     SCAN_NONE,
  42     SCAN_DVB_T,
  43     SCAN_DVB_S,
  44     SCAN_DVB_C,
  45 } scan_type_t;
  46
  47 typedef struct
  48 {
  49     scan_type_t type;
  50     bool b_exhaustive;
  51     struct
  52     {
  53         int i_min;
  54         int i_max;
  55         int i_step;
  56
  57         int i_count;    /* Number of frequency test to do */
  58     } frequency;
  59
  60     struct
  61     {
  62         /* Bandwidth should be 6, 7 or 8 */
  63         int i_min;
  64         int i_max;
  65         int i_step;
  66
  67         int i_count;
  68     } bandwidth;
  69
  70 } scan_parameter_t;
  71
  72 typedef struct
  73 {
  74     int i_frequency;
  75     int i_bandwidth;
  76 } scan_configuration_t;
  77
  78 typedef enum
  79 {
  80     SERVICE_UNKNOWN = 0,
  81     SERVICE_DIGITAL_RADIO,
  82     SERVICE_DIGITAL_TELEVISION,
  83     SERVICE_DIGITAL_TELEVISION_AC_SD,
  84     SERVICE_DIGITAL_TELEVISION_AC_HD,
  85 } scan_service_type_t;
  86
  87 typedef struct
  88 {
  89     int  i_program;     /* program number (service id) */
  90     scan_configuration_t cfg;
  91     int i_snr;
  92
  93     scan_service_type_t type;
  94     char *psz_name;     /* channel name in utf8 or NULL */
  95     int  i_channel;     /* -1 if unknown */
  96     bool b_crypted;     /* True if potentially crypted */
  97
  98
  99     int i_network_id;
 100
 101     int i_nit_version;
 102     int i_sdt_version;
 103
 104 } scan_service_t;
 105
 106 typedef struct
 107 {
 108     vlc_object_t *p_obj;
 109
 110     scan_configuration_t cfg;
 111     int i_snr;
 112
 113     dvbpsi_handle pat;
 114     dvbpsi_pat_t *p_pat;
 115     int i_nit_pid;
 116
 117     dvbpsi_handle sdt;
 118     dvbpsi_sdt_t *p_sdt;
 119
 120 #ifdef DVBPSI_USE_NIT
 121     dvbpsi_handle nit;
 122     dvbpsi_nit_t *p_nit;
 123 #endif
 124
 125 } scan_session_t;
 126
 127 typedef struct
 128 {
 129     vlc_object_t *p_obj;
 130     int64_t i_index;
 131     int i_dialog_id;
 132     scan_parameter_t parameter;
 133     int64_t i_time_start;
 134
 135     int            i_service;
 136     scan_service_t **pp_service;
 137 } scan_t;
 138
 139
 140 scan_service_t *scan_service_New( int i_program, const scan_configuration_t *p_cfg  );
 141 void scan_service_Delete( scan_service_t *p_srv );
 142
 143 int  scan_Init( vlc_object_t *p_obj, scan_t *p_scan, const scan_parameter_t *p_parameter );
 144 void scan_Clean( scan_t *p_scan );
 145
 146 int scan_Next( scan_t *p_scan, scan_configuration_t *p_cfg );
 147
 148 block_t *scan_GetM3U( scan_t *p_scan );
 149 bool scan_IsCancelled( scan_t *p_scan );
 150
 151 int  scan_session_Init( vlc_object_t *p_obj, scan_session_t *p_session, const scan_configuration_t *p_cfg );
 152 void scan_session_Clean( scan_t *p_scan, scan_session_t *p_session );
 153 bool scan_session_Push( scan_session_t *p_scan, block_t *p_block );
 154 void scan_service_SetSNR( scan_session_t *p_scan, int i_snr );
 155