linux-dvb-apps.git - linux-dvb-apps Debian packaging

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author	Thomas Schmidt <tschmidt@debian.org>	2005-12-15 13:26:37 +0100
committer	etobi <git@e-tobi.net>	2013-09-03 09:48:40 +0200
commit	57526797f4dc18bab825b3492cc0d3034d3d58d3 (patch)
tree	c617a242cf689b9598a62e901ca47296f20e4937 /lib/libucsi/dvb/sdt_section.h
parent	e050b128f4466790054e1befdeab19a7d9e84e11 (diff)
download	linux-dvb-apps-57526797f4dc18bab825b3492cc0d3034d3d58d3.tar.gz

Imported Debian patch 1.1.0-9debian/1.1.0-9

Diffstat (limited to 'lib/libucsi/dvb/sdt_section.h')

0 files changed, 0 insertions, 0 deletions

/* 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 */ #include <string.h> #include <libdvbmisc/dvbmisc.h> #include <pthread.h> #include "en50221_app_ai.h" #include "en50221_app_tags.h" #include "asn_1.h" struct en50221_app_ai { struct en50221_app_send_functions *funcs; en50221_app_ai_callback callback; void *callback_arg; pthread_mutex_t lock; }; static int en50221_app_ai_parse_app_info(struct en50221_app_ai *ai, uint8_t slot_id, uint16_t session_number, uint8_t * data, uint32_t data_length); struct en50221_app_ai *en50221_app_ai_create(struct en50221_app_send_functions *funcs) { struct en50221_app_ai *ai = NULL; // create structure and set it up ai = malloc(sizeof(struct en50221_app_ai)); if (ai == NULL) { return NULL; } ai->funcs = funcs; ai->callback = NULL; pthread_mutex_init(&ai->lock, NULL); // done return ai; } void en50221_app_ai_destroy(struct en50221_app_ai *ai) { pthread_mutex_destroy(&ai->lock); free(ai); } void en50221_app_ai_register_callback(struct en50221_app_ai *ai, en50221_app_ai_callback callback, void *arg) { pthread_mutex_lock(&ai->lock); ai->callback = callback; ai->callback_arg = arg; pthread_mutex_unlock(&ai->lock); } int en50221_app_ai_enquiry(struct en50221_app_ai *ai, uint16_t session_number) { uint8_t data[4]; data[0] = (TAG_APP_INFO_ENQUIRY >> 16) & 0xFF; data[1] = (TAG_APP_INFO_ENQUIRY >> 8) & 0xFF; data[2] = TAG_APP_INFO_ENQUIRY & 0xFF; data[3] = 0; return ai->funcs->send_data(ai->funcs->arg, session_number, data, 4); } int en50221_app_ai_entermenu(struct en50221_app_ai *ai, uint16_t session_number) { uint8_t data[4]; data[0] = (TAG_ENTER_MENU >> 16) & 0xFF; data[1] = (TAG_ENTER_MENU >> 8) & 0xFF; data[2] = TAG_ENTER_MENU & 0xFF; data[3] = 0; return ai->funcs->send_data(ai->funcs->arg, session_number, data, 4); } int en50221_app_ai_message(struct en50221_app_ai *ai, uint8_t slot_id, uint16_t session_number, uint32_t resource_id, uint8_t * data, uint32_t data_length) { (void) resource_id; // get the tag if (data_length < 3) { print(LOG_LEVEL, ERROR, 1, "Received short data\n"); return -1; } uint32_t tag = (data[0] << 16) | (data[1] << 8) | data[2]; switch (tag) { case TAG_APP_INFO: return en50221_app_ai_parse_app_info(ai, slot_id, session_number, data + 3, data_length - 3); } print(LOG_LEVEL, ERROR, 1, "Received unexpected tag %x\n", tag); return -1; } static int en50221_app_ai_parse_app_info(struct en50221_app_ai *ai, uint8_t slot_id, uint16_t session_number, uint8_t * data, uint32_t data_length) { // parse the length field int length_field_len; uint16_t asn_data_length; if ((length_field_len = asn_1_decode(&asn_data_length, data, data_length)) < 0) { print(LOG_LEVEL, ERROR, 1, "Received data with invalid length from module on slot %02x\n", slot_id); return -1; } // check it if (asn_data_length < 6) { print(LOG_LEVEL, ERROR, 1, "Received short data\n"); return -1; } if (asn_data_length > (data_length - length_field_len)) { print(LOG_LEVEL, ERROR, 1, "Received short data\n"); return -1; } uint8_t *app_info = data + length_field_len; // parse the fields uint8_t application_type = app_info[0]; uint16_t application_manufacturer = (app_info[1] << 8) | app_info[2]; uint16_t manufacturer_code = (app_info[3] << 8) | app_info[4]; uint8_t menu_string_length = app_info[5]; uint8_t *menu_string = app_info + 6; // check the menu_string_length if (menu_string_length > (asn_data_length - 6)) { print(LOG_LEVEL, ERROR, 1, "Received bad menu string length - adjusting\n"); menu_string_length = asn_data_length - 6; } // tell the app pthread_mutex_lock(&ai->lock); en50221_app_ai_callback cb = ai->callback; void *cb_arg = ai->callback_arg; pthread_mutex_unlock(&ai->lock); if (cb) { return cb(cb_arg, slot_id, session_number, application_type, application_manufacturer, manufacturer_code, menu_string_length, menu_string); } return 0; }


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