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

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Diffstat (limited to 'util/scan/dvb-t/fr-Toulouse-Midi')

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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 */ #include <string.h> #include <libdvbmisc/dvbmisc.h> #include <pthread.h> #include <libucsi/dvb/types.h> #include "en50221_app_epg.h" #include "en50221_app_tags.h" #include "asn_1.h" struct en50221_app_epg { struct en50221_app_send_functions *funcs; en50221_app_epg_reply_callback callback; void *callback_arg; pthread_mutex_t lock; }; static int en50221_app_epg_parse_reply(struct en50221_app_epg *private, uint8_t slot_id, uint16_t session_number, uint8_t * data, uint32_t data_length); struct en50221_app_epg *en50221_app_epg_create(struct en50221_app_send_functions *funcs) { struct en50221_app_epg *epg = NULL; // create structure and set it up epg = malloc(sizeof(struct en50221_app_epg)); if (epg == NULL) { return NULL; } epg->funcs = funcs; epg->callback = NULL; pthread_mutex_init(&epg->lock, NULL); // done return epg; } void en50221_app_epg_destroy(struct en50221_app_epg *epg) { pthread_mutex_destroy(&epg->lock); free(epg); } void en50221_app_epg_register_enquiry_callback(struct en50221_app_epg *epg, en50221_app_epg_reply_callback callback, void *arg) { pthread_mutex_lock(&epg->lock); epg->callback = callback; epg->callback_arg = arg; pthread_mutex_unlock(&epg->lock); } int en50221_app_epg_enquire(struct en50221_app_epg *epg, uint16_t session_number, uint8_t command_id, uint16_t network_id, uint16_t original_network_id, uint16_t transport_stream_id, uint16_t service_id, uint16_t event_id) { uint8_t data[15]; data[0] = (TAG_EPG_ENQUIRY >> 16) & 0xFF; data[1] = (TAG_EPG_ENQUIRY >> 8) & 0xFF; data[2] = TAG_EPG_ENQUIRY & 0xFF; data[3] = 11; data[4] = command_id; data[5] = network_id >> 8; data[6] = network_id; data[7] = original_network_id >> 8; data[8] = original_network_id; data[9] = transport_stream_id >> 8; data[10] = transport_stream_id; data[11] = service_id >> 8; data[12] = service_id; data[13] = event_id >> 8; data[14] = event_id; return epg->funcs->send_data(epg->funcs->arg, session_number, data, 15); } int en50221_app_epg_message(struct en50221_app_epg *epg, uint8_t slot_id, uint16_t session_number, uint32_t resource_id, uint8_t * data, uint32_t data_length) { struct en50221_app_epg *private = (struct en50221_app_epg *) epg; (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_EPG_REPLY: return en50221_app_epg_parse_reply(private, 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_epg_parse_reply(struct en50221_app_epg *epg, uint8_t slot_id, uint16_t session_number, uint8_t * data, uint32_t data_length) { // validate data if (data_length != 2) { print(LOG_LEVEL, ERROR, 1, "Received short data\n"); return -1; } if (data[0] != 1) { print(LOG_LEVEL, ERROR, 1, "Received short data\n"); return -1; } uint8_t event_status = data[1]; // tell the app pthread_mutex_lock(&epg->lock); en50221_app_epg_reply_callback cb = epg->callback; void *cb_arg = epg->callback_arg; pthread_mutex_unlock(&epg->lock); if (cb) { return cb(cb_arg, slot_id, session_number, event_status); } return 0; }


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