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Diffstat (limited to 'lib/libdvben50221/en50221_app_ca.h')
| -rw-r--r-- | lib/libdvben50221/en50221_app_ca.h | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/lib/libdvben50221/en50221_app_ca.h b/lib/libdvben50221/en50221_app_ca.h new file mode 100644 index 0000000..7405b06 --- /dev/null +++ b/lib/libdvben50221/en50221_app_ca.h @@ -0,0 +1,264 @@ +/* + en50221 encoder An implementation for libdvb + an implementation for the en50221 transport layer + + Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com> + Copyright (C) 2005 Julian Scheel (julian at jusst dot de) + Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net) + + This library is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#ifndef __EN50221_APPLICATION_ca_H__ +#define __EN50221_APPLICATION_ca_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#include <stdlib.h> +#include <stdint.h> +#include <libdvben50221/en50221_app_utils.h> +#include <libucsi/mpeg/pmt_section.h> +#include <libucsi/dvb/descriptor.h> + +#define CA_LIST_MANAGEMENT_MORE 0x00 +#define CA_LIST_MANAGEMENT_FIRST 0x01 +#define CA_LIST_MANAGEMENT_LAST 0x02 +#define CA_LIST_MANAGEMENT_ONLY 0x03 +#define CA_LIST_MANAGEMENT_ADD 0x04 +#define CA_LIST_MANAGEMENT_UPDATE 0x05 + +#define CA_PMT_CMD_ID_OK_DESCRAMBLING 0x01 +#define CA_PMT_CMD_ID_OK_MMI 0x02 +#define CA_PMT_CMD_ID_QUERY 0x03 +#define CA_PMT_CMD_ID_NOT_SELECTED 0x04 + +#define CA_ENABLE_DESCRAMBLING_POSSIBLE 0x01 +#define CA_ENABLE_DESCRAMBLING_POSSIBLE_PURCHASE 0x02 +#define CA_ENABLE_DESCRAMBLING_POSSIBLE_TECHNICAL 0x03 +#define CA_ENABLE_DESCRAMBLING_NOT_POSSIBLE_NO_ENTITLEMENT 0x71 +#define CA_ENABLE_DESCRAMBLING_NOT_POSSIBLE_TECHNICAL 0x73 + + +#define EN50221_APP_CA_RESOURCEID MKRID(3,1,1) + +/** + * PMT reply structure. + */ +struct en50221_app_pmt_reply { + uint16_t program_number; + EBIT3(uint8_t reserved_1 : 2;, + uint8_t version_number : 5;, + uint8_t current_next_indicator : 1;); + EBIT2(uint8_t CA_enable_flag : 1;, + uint8_t CA_enable : 7;); + /* struct en50221_app_pmt_stream streams[] */ +} __attribute__ ((packed)); + +/** + * A stream within a pmt reply structure. + */ +struct en50221_app_pmt_stream { + EBIT2(uint16_t reserved_1 : 3;, + uint16_t es_pid :13;); + EBIT2(uint8_t CA_enable_flag : 1;, + uint8_t CA_enable : 7;); +} __attribute__ ((packed)); + +/** + * Convenience iterator for the streams field of the en50221_app_pmt_reply structure. + * + * @param pmt Pointer to the en50221_app_pmt_reply structure. + * @param pos Variable holding a pointer to the current en50221_app_pmt_stream. + * @param size Total size of the PMT reply. + */ +#define en50221_app_pmt_reply_streams_for_each(pmt, pos, size) \ + for ((pos) = en50221_app_pmt_reply_streams_first(pmt, size); \ + (pos); \ + (pos) = en50221_app_pmt_reply_streams_next(pmt, pos, size)) + + +/** + * Type definition for command - called when we receive a ca info response. + * + * @param arg Private argument. + * @param slot_id Slot id concerned. + * @param session_number Session number concerned. + * @param ca_id_count Number of ca_system_ids. + * @param ca_ids Pointer to list of ca_system_ids. + * @return 0 on success, -1 on failure. + */ +typedef int (*en50221_app_ca_info_callback) (void *arg, + uint8_t slot_id, + uint16_t session_number, + uint32_t ca_id_count, + uint16_t * ca_ids); + +/** + * Type definition for pmt_reply - called when we receive a pmt_reply. + * + * @param arg Private argument. + * @param slot_id Slot id concerned. + * @param session_number Session number concerned. + * @param reply Pointer to a struct en50221_app_pmt_reply. + * @param reply_size Total size of the struct en50221_app_pmt_reply in bytes. + * @return 0 on success, -1 on failure. + */ +typedef int (*en50221_app_ca_pmt_reply_callback) (void *arg, + uint8_t slot_id, + uint16_t session_number, + struct en50221_app_pmt_reply *reply, + uint32_t reply_size); + +/** + * Opaque type representing a ca resource. + */ +struct en50221_app_ca; + +/** + * Create an instance of the ca resource. + * + * @param funcs Send functions to use. + * @return Instance, or NULL on failure. + */ +extern struct en50221_app_ca *en50221_app_ca_create(struct en50221_app_send_functions *funcs); + +/** + * Destroy an instance of the ca resource. + * + * @param ca Instance to destroy. + */ +extern void en50221_app_ca_destroy(struct en50221_app_ca *ca); + +/** + * Register the callback for when we receive a ca info. + * + * @param ca ca resource instance. + * @param callback The callback. Set to NULL to remove the callback completely. + * @param arg Private data passed as arg0 of the callback. + */ +extern void en50221_app_ca_register_info_callback(struct en50221_app_ca *ca, + en50221_app_ca_info_callback callback, + void *arg); + +/** + * Register the callback for when we receive a pmt_reply. + * + * @param ca ca resource instance. + * @param callback The callback. Set to NULL to remove the callback completely. + * @param arg Private data passed as arg0 of the callback. + */ +extern void en50221_app_ca_register_pmt_reply_callback(struct en50221_app_ca *ca, + en50221_app_ca_pmt_reply_callback callback, + void *arg); + +/** + * Send a ca_info_req to the CAM. + * + * @param ca ca resource instance. + * @param session_number Session number to send it on. + * @return 0 on success, -1 on failure. + */ +extern int en50221_app_ca_info_enq(struct en50221_app_ca *ca, + uint16_t session_number); + +/** + * Send a ca_pmt structure to the CAM. + * + * @param ca ca resource instance. + * @param session_number Session number to send it on. + * @param ca_pmt A ca_pmt structure formatted with the en50221_ca_format_pmt() function. + * @param ca_pmt_length Length of ca_pmt structure in bytes. + * @return 0 on success, -1 on failure. + */ +extern int en50221_app_ca_pmt(struct en50221_app_ca *ca, + uint16_t session_number, + uint8_t * ca_pmt, + uint32_t ca_pmt_length); + +/** + * Transform a libucsi PMT into a binary structure for sending to a CAM. + * + * @param pmt The source PMT structure. + * @param data Pointer to data buffer to write it to. + * @param data_length Number of bytes available in data buffer. + * @param move_ca_descriptors If non-zero, will attempt to move CA descriptors + * in order to reduce the size of the formatted CAPMT. + * @param ca_pmt_list_management One of the CA_LIST_MANAGEMENT_*. + * @param ca_pmt_cmd_id One of the CA_PMT_CMD_ID_*. + * @return Number of bytes used, or -1 on error. + */ +extern int en50221_ca_format_pmt(struct mpeg_pmt_section *pmt, + uint8_t * data, + uint32_t data_length, + int move_ca_descriptors, + uint8_t ca_pmt_list_management, + uint8_t ca_pmt_cmd_id); + +/** + * Pass data received for this resource into it for parsing. + * + * @param ca CA instance. + * @param slot_id Slot ID concerned. + * @param session_number Session number concerned. + * @param resource_id Resource ID concerned. + * @param data The data. + * @param data_length Length of data in bytes. + * @return 0 on success, -1 on failure. + */ +extern int en50221_app_ca_message(struct en50221_app_ca *ca, + uint8_t slot_id, + uint16_t session_number, + uint32_t resource_id, + uint8_t *data, + uint32_t data_length); + + + + +static inline struct en50221_app_pmt_stream * + en50221_app_pmt_reply_streams_first(struct en50221_app_pmt_reply *reply, + uint32_t reply_size) +{ + uint32_t pos = sizeof(struct en50221_app_pmt_reply); + + if (pos >= reply_size) + return NULL; + + return (struct en50221_app_pmt_stream *) ((uint8_t *) reply + pos); +} + +static inline struct en50221_app_pmt_stream * + en50221_app_pmt_reply_streams_next(struct en50221_app_pmt_reply *reply, + struct en50221_app_pmt_stream *pos, + uint32_t reply_size) +{ + uint8_t *end = (uint8_t *) reply + reply_size; + uint8_t *next = + (uint8_t *) pos + + sizeof(struct en50221_app_pmt_stream); + + if (next >= end) + return NULL; + + return (struct en50221_app_pmt_stream *) next; +} + +#ifdef __cplusplus +} +#endif + +#endif |