dtv-scan-tables.git - dtv-scan-tables Debian packaging

diff options

Diffstat (limited to 'dvb-t/se-Duved')

0 files changed, 0 insertions, 0 deletions

/* en50221 encoder An implementation for libdvb an implementation for the en50221 session 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_TRANSPORT_H__ #define __EN50221_TRANSPORT_H__ #ifdef __cplusplus extern "C" { #endif #include <stdlib.h> #include <stdint.h> #include <sys/uio.h> /** * Callback reasons. */ #define T_CALLBACK_REASON_CONNECTIONOPEN 0x00 // A connection we opened _to_ the cam has been ACKed #define T_CALLBACK_REASON_CAMCONNECTIONOPEN 0x01 // The cam has opened a connection to _us_. #define T_CALLBACK_REASON_DATA 0x02 // Data received #define T_CALLBACK_REASON_CONNECTIONCLOSE 0x03 // The cam has told us to close a connection. #define T_CALLBACK_REASON_SLOTCLOSE 0x04 // The cam in the supplied slot id has been removed. // these are the states a TC can be in #define T_STATE_IDLE 0x01 // this transport connection is not in use #define T_STATE_ACTIVE 0x02 // this transport connection is in use #define T_STATE_ACTIVE_DELETEQUEUED 0x04 // this transport connection is about to be deleted #define T_STATE_IN_CREATION 0x08 // this transport waits for a T_C_T_C_REPLY to become active #define T_STATE_IN_DELETION 0x10 // this transport waits for T_D_T_C_REPLY to become idle again /** * Opaque type representing a transport layer. */ struct en50221_transport_layer; /** * Type definition for callback function - used when events are received from a module. * * **IMPORTANT** For all callback reasons except T_CALLBACK_REASON_DATA, an internal lock is held in the * transport layer. Therefore, to avoid deadlock, you *must not* call back into the transport layer for * these reasons. * * However, for T_CALLBACK_REASON_DATA, the internal lock is not held, so calling back into the transport * layer is fine in this case. * * @param arg Private data. * @param reason One of the T_CALLBACK_REASON_* values. * @param data The data. * @param data_length Length of the data. * @param slot_id Slot_id the data was received from. * @param connection_id Connection_id the data was received from. */ typedef void (*en50221_tl_callback) (void *arg, int reason, uint8_t * data, uint32_t data_length, uint8_t slot_id, uint8_t connection_id); /** * Construct a new instance of the transport layer. * * @param max_slots Maximum number of slots to support. * @param max_connections_per_slot Maximum connections per slot. * @return The en50221_transport_layer instance, or NULL on error. */ extern struct en50221_transport_layer *en50221_tl_create(uint8_t max_slots, uint8_t max_connections_per_slot); /** * Destroy an instance of the transport layer. * * @param tl The en50221_transport_layer instance. */ extern void en50221_tl_destroy(struct en50221_transport_layer *tl); /** * Register a new slot with the library. * * @param tl The en50221_transport_layer instance. * @param ca_hndl FD for talking to the slot. * @param slot CAM slot where the requested CAM of the CA is in. * @param response_timeout Maximum timeout in ms to a response we send before signalling a timeout. * @param poll_delay Interval between polls in ms. * @return slot_id on sucess, or -1 on error. */ extern int en50221_tl_register_slot(struct en50221_transport_layer *tl, int ca_hndl, uint8_t slot, uint32_t response_timeout, uint32_t poll_delay); /** * Destroy a registered slot - e.g. if a CAM is removed, or an error occurs. Does * not attempt to reset the CAM. * * @param tl The en50221_transport_layer instance. * @param slot_id Slot to destroy. */ extern void en50221_tl_destroy_slot(struct en50221_transport_layer *tl, uint8_t slot_id); /** * Performs one iteration of the transport layer poll - * checking for incoming data furthermore it will handle * the timeouts of certain commands like T_DELETE_T_C it * should be called by the application regularly, generally * faster than the poll delay. * * @param tl The en50221_transport_layer instance. * @return 0 on succes, or -1 if there was an error of some sort. */ extern int en50221_tl_poll(struct en50221_transport_layer *tl); /** * Register the callback for data reception. * * @param tl The en50221_transport_layer 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_tl_register_callback(struct en50221_transport_layer *tl, en50221_tl_callback callback, void *arg); /** * Gets the ID of the slot an error occurred on. * * @param tl The en50221_transport_layer instance. * @return The offending slot id. */ extern int en50221_tl_get_error_slot(struct en50221_transport_layer *tl); /** * Gets the last error. * * @param tl The en50221_transport_layer instance. * @return One of the EN50221ERR_* values. */ extern int en50221_tl_get_error(struct en50221_transport_layer *tl); /** * This function is used to take a data-block, pack into * into a TPDU (DATA_LAST) and send it to the device * * @param tl The en50221_transport_layer instance. * @param slot_id ID of the slot. * @param connection_id Connection id. * @param data Data to send. * @param data_length Number of bytes to send. * @return 0 on success, or -1 on error. */ extern int en50221_tl_send_data(struct en50221_transport_layer *tl, uint8_t slot_id, uint8_t connection_id, uint8_t * data, uint32_t data_length); /** * This function is used to take a data-block, pack into * into a TPDU (DATA_LAST) and send it to the device * * @param tl The en50221_transport_layer instance. * @param slot_id ID of the slot. * @param connection_id Connection id. * @param vector iov to send. * @param io_count Number of elements in vector. * @return 0 on success, or -1 on error. */ extern int en50221_tl_send_datav(struct en50221_transport_layer *tl, uint8_t slot_id, uint8_t connection_id, struct iovec *vector, int iov_count); /** * Create a new transport connection to the cam. * * **IMPORTANT** When this function returns, it means the request to create a connection * has been submitted. You will need to poll using en50221_tl_get_connection_state() to find out * if/when the connection is established. A callback with T_CALLBACK_REASON_CONNECTIONOPEN reason * will also be sent when it is acked by the CAM. * * @param tl The en50221_transport_layer instance. * @param slot_id ID of the slot. * @return The allocated connection id on success, or -1 on error. */ extern int en50221_tl_new_tc(struct en50221_transport_layer *tl, uint8_t slot_id); /** * Deallocates a transport connection. * * **IMPORTANT** When this function returns, it means the request to destroy a connection * has been submitted. You will need to poll using en50221_tl_get_connection_state() to find out * if/when the connection is destroyed. * * @param tl The en50221_transport_layer instance. * @param slot_id ID of the slot. * @param connection_id Connection id to send the request _on_. * @return 0 on success, or -1 on error. */ extern int en50221_tl_del_tc(struct en50221_transport_layer *tl, uint8_t slot_id, uint8_t connection_id); /** * Checks the state of a connection. * * @param tl The en50221_transport_layer instance. * @param slot_id ID of the slot. * @param connection_id Connection id to send the request _on_. * @return One of the T_STATE_* values. */ extern int en50221_tl_get_connection_state(struct en50221_transport_layer *tl, uint8_t slot_id, uint8_t connection_id); #ifdef __cplusplus } #endif #endif


context:
space:
mode: