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+/*
+ 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
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