1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
|
/*****************************************************************************
* en50221.h
*****************************************************************************
* Copyright (C) 2008 VideoLAN
* $Id: en50221.h 27 2009-10-20 19:15:04Z massiot $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include <malloc.h>
typedef void * access_t;
#define STRINGIFY( z ) UGLY_KLUDGE( z )
#define UGLY_KLUDGE( z ) #z
#define EN50221_MMI_NONE 0
#define EN50221_MMI_ENQ 1
#define EN50221_MMI_ANSW 2
#define EN50221_MMI_MENU 3
#define EN50221_MMI_MENU_ANSW 4
#define EN50221_MMI_LIST 5
typedef struct en50221_mmi_object_t
{
int i_object_type;
union
{
struct
{
int b_blind;
char *psz_text;
} enq;
struct
{
int b_ok;
char *psz_answ;
} answ;
struct
{
char *psz_title, *psz_subtitle, *psz_bottom;
char **ppsz_choices;
int i_choices;
} menu; /* menu and list are the same */
struct
{
int i_choice;
} menu_answ;
} u;
} en50221_mmi_object_t;
#define MAX_CI_SLOTS 16
#define MAX_SESSIONS 32
#define MAX_PROGRAMS 24
extern int i_ca_handle;
extern int i_ca_type;
/*****************************************************************************
* Prototypes
*****************************************************************************/
void en50221_Init( void );
void en50221_Reset( void );
void en50221_Poll( void );
void en50221_AddPMT( dvbpsi_pmt_t *p_pmt );
void en50221_UpdatePMT( dvbpsi_pmt_t *p_pmt );
void en50221_DeletePMT( dvbpsi_pmt_t *p_pmt );
uint8_t en50221_StatusMMI( uint8_t *p_answer, ssize_t *pi_size );
uint8_t en50221_StatusMMISlot( uint8_t *p_buffer, ssize_t i_size,
uint8_t *p_answer, ssize_t *pi_size );
uint8_t en50221_OpenMMI( uint8_t *p_buffer, ssize_t i_size );
uint8_t en50221_CloseMMI( uint8_t *p_buffer, ssize_t i_size );
uint8_t en50221_GetMMIObject( uint8_t *p_buffer, ssize_t i_size,
uint8_t *p_answer, ssize_t *pi_size );
uint8_t en50221_SendMMIObject( uint8_t *p_buffer, ssize_t i_size );
/*
* This is where it gets scary: do not show to < 18 yrs old
*/
/*****************************************************************************
* en50221_SerializeMMIObject :
*****************************************************************************/
static inline int en50221_SerializeMMIObject( uint8_t *p_answer,
ssize_t *pi_size,
en50221_mmi_object_t *p_object )
{
ssize_t i_max_size = *pi_size;
en50221_mmi_object_t *p_serialized = (en50221_mmi_object_t *)p_answer;
char **pp_tmp;
int i;
#define STORE_MEMBER(pp_pointer, i_size) \
if ( i_size + *pi_size > i_max_size ) \
return -1; \
memcpy( p_answer, *pp_pointer, i_size ); \
*pp_pointer = (void *)*pi_size; \
*pi_size += i_size; \
p_answer += i_size;
if ( sizeof(en50221_mmi_object_t) > i_max_size )
return -1;
memcpy( p_answer, p_object, sizeof(en50221_mmi_object_t) );
*pi_size = sizeof(en50221_mmi_object_t);
p_answer += sizeof(en50221_mmi_object_t);
switch ( p_object->i_object_type )
{
case EN50221_MMI_ENQ:
STORE_MEMBER( &p_serialized->u.enq.psz_text,
strlen(p_object->u.enq.psz_text) + 1 );
break;
case EN50221_MMI_ANSW:
STORE_MEMBER( &p_serialized->u.answ.psz_answ,
strlen(p_object->u.answ.psz_answ) + 1 );
break;
case EN50221_MMI_MENU:
case EN50221_MMI_LIST:
STORE_MEMBER( &p_serialized->u.menu.psz_title,
strlen(p_object->u.menu.psz_title) + 1 );
STORE_MEMBER( &p_serialized->u.menu.psz_subtitle,
strlen(p_object->u.menu.psz_subtitle) + 1 );
STORE_MEMBER( &p_serialized->u.menu.psz_bottom,
strlen(p_object->u.menu.psz_bottom) + 1 );
/* pointer alignment */
i = ((*pi_size + 7) / 8) * 8 - *pi_size;
*pi_size += i;
p_answer += i;
pp_tmp = (char **)p_answer;
STORE_MEMBER( &p_serialized->u.menu.ppsz_choices,
p_object->u.menu.i_choices * sizeof(char *) );
for ( i = 0; i < p_object->u.menu.i_choices; i++ )
{
STORE_MEMBER( &pp_tmp[i],
strlen(p_object->u.menu.ppsz_choices[i]) + 1 );
}
break;
default:
break;
}
return 0;
}
/*****************************************************************************
* en50221_UnserializeMMIObject :
*****************************************************************************/
static inline int en50221_UnserializeMMIObject( en50221_mmi_object_t *p_object,
ssize_t i_size )
{
int i, j;
#define CHECK_MEMBER(pp_member) \
if ( (ptrdiff_t)*pp_member >= i_size ) \
return -1; \
for ( i = 0; ((char *)p_object + (ptrdiff_t)*pp_member)[i] != '\0'; \
i++ ) \
if ( (ptrdiff_t)*pp_member + i >= i_size ) \
return -1; \
*pp_member += (ptrdiff_t)p_object;
switch ( p_object->i_object_type )
{
case EN50221_MMI_ENQ:
CHECK_MEMBER(&p_object->u.enq.psz_text);
break;
case EN50221_MMI_ANSW:
CHECK_MEMBER(&p_object->u.answ.psz_answ);
break;
case EN50221_MMI_MENU:
case EN50221_MMI_LIST:
CHECK_MEMBER(&p_object->u.menu.psz_title);
CHECK_MEMBER(&p_object->u.menu.psz_subtitle);
CHECK_MEMBER(&p_object->u.menu.psz_bottom);
if ( (ptrdiff_t)p_object->u.menu.ppsz_choices
+ p_object->u.menu.i_choices * sizeof(char *) >= i_size )
return -1;
p_object->u.menu.ppsz_choices = (char **)((char *)p_object
+ (ptrdiff_t)p_object->u.menu.ppsz_choices);
for ( j = 0; j < p_object->u.menu.i_choices; j++ )
{
CHECK_MEMBER(&p_object->u.menu.ppsz_choices[j]);
}
break;
default:
break;
}
return 0;
}
|