The C and C++ Include Header Files

/usr/include/linux/dvb/ca.h


$ cat -n /usr/include/linux/dvb/ca.h

     1	/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
     2	/*
     3	 * ca.h
     4	 *
     5	 * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
     6	 *                  & Marcus Metzler <marcus@convergence.de>
     7	 *                    for convergence integrated media GmbH
     8	 */
     9	
    10	#ifndef _DVBCA_H_
    11	#define _DVBCA_H_
    12	
    13	/**
    14	 * struct ca_slot_info - CA slot interface types and info.
    15	 *
    16	 * @num:	slot number.
    17	 * @type:	slot type.
    18	 * @flags:	flags applicable to the slot.
    19	 *
    20	 * This struct stores the CA slot information.
    21	 *
    22	 * @type can be:
    23	 *
    24	 *	- %CA_CI - CI high level interface;
    25	 *	- %CA_CI_LINK - CI link layer level interface;
    26	 *	- %CA_CI_PHYS - CI physical layer level interface;
    27	 *	- %CA_DESCR - built-in descrambler;
    28	 *	- %CA_SC -simple smart card interface.
    29	 *
    30	 * @flags can be:
    31	 *
    32	 *	- %CA_CI_MODULE_PRESENT - module (or card) inserted;
    33	 *	- %CA_CI_MODULE_READY - module is ready for usage.
    34	 */
    35	
    36	struct ca_slot_info {
    37		int num;
    38		int type;
    39	#define CA_CI            1
    40	#define CA_CI_LINK       2
    41	#define CA_CI_PHYS       4
    42	#define CA_DESCR         8
    43	#define CA_SC          128
    44	
    45		unsigned int flags;
    46	#define CA_CI_MODULE_PRESENT 1
    47	#define CA_CI_MODULE_READY   2
    48	};
    49	
    50	
    51	/**
    52	 * struct ca_descr_info - descrambler types and info.
    53	 *
    54	 * @num:	number of available descramblers (keys).
    55	 * @type:	type of supported scrambling system.
    56	 *
    57	 * Identifies the number of descramblers and their type.
    58	 *
    59	 * @type can be:
    60	 *
    61	 *	- %CA_ECD - European Common Descrambler (ECD) hardware;
    62	 *	- %CA_NDS - Videoguard (NDS) hardware;
    63	 *	- %CA_DSS - Distributed Sample Scrambling (DSS) hardware.
    64	 */
    65	struct ca_descr_info {
    66		unsigned int num;
    67		unsigned int type;
    68	#define CA_ECD           1
    69	#define CA_NDS           2
    70	#define CA_DSS           4
    71	};
    72	
    73	/**
    74	 * struct ca_caps - CA slot interface capabilities.
    75	 *
    76	 * @slot_num:	total number of CA card and module slots.
    77	 * @slot_type:	bitmap with all supported types as defined at
    78	 *		&struct ca_slot_info (e. g. %CA_CI, %CA_CI_LINK, etc).
    79	 * @descr_num:	total number of descrambler slots (keys)
    80	 * @descr_type:	bitmap with all supported types as defined at
    81	 *		&struct ca_descr_info (e. g. %CA_ECD, %CA_NDS, etc).
    82	 */
    83	struct ca_caps {
    84		unsigned int slot_num;
    85		unsigned int slot_type;
    86		unsigned int descr_num;
    87		unsigned int descr_type;
    88	};
    89	
    90	/**
    91	 * struct ca_msg - a message to/from a CI-CAM
    92	 *
    93	 * @index:	unused
    94	 * @type:	unused
    95	 * @length:	length of the message
    96	 * @msg:	message
    97	 *
    98	 * This struct carries a message to be send/received from a CI CA module.
    99	 */
   100	struct ca_msg {
   101		unsigned int index;
   102		unsigned int type;
   103		unsigned int length;
   104		unsigned char msg[256];
   105	};
   106	
   107	/**
   108	 * struct ca_descr - CA descrambler control words info
   109	 *
   110	 * @index: CA Descrambler slot
   111	 * @parity: control words parity, where 0 means even and 1 means odd
   112	 * @cw: CA Descrambler control words
   113	 */
   114	struct ca_descr {
   115		unsigned int index;
   116		unsigned int parity;
   117		unsigned char cw[8];
   118	};
   119	
   120	#define CA_RESET          _IO('o', 128)
   121	#define CA_GET_CAP        _IOR('o', 129, struct ca_caps)
   122	#define CA_GET_SLOT_INFO  _IOR('o', 130, struct ca_slot_info)
   123	#define CA_GET_DESCR_INFO _IOR('o', 131, struct ca_descr_info)
   124	#define CA_GET_MSG        _IOR('o', 132, struct ca_msg)
   125	#define CA_SEND_MSG       _IOW('o', 133, struct ca_msg)
   126	#define CA_SET_DESCR      _IOW('o', 134, struct ca_descr)
   127	
   128	
   129	/* This is needed for legacy userspace support */
   130	typedef struct ca_slot_info ca_slot_info_t;
   131	typedef struct ca_descr_info  ca_descr_info_t;
   132	typedef struct ca_caps  ca_caps_t;
   133	typedef struct ca_msg ca_msg_t;
   134	typedef struct ca_descr ca_descr_t;
   135	
   136	
   137	
   138	#endif