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authoretobi <git@e-tobi.net>2013-09-03 09:48:41 +0200
committeretobi <git@e-tobi.net>2013-09-03 09:48:41 +0200
commitab959d7b4194715870128e616b8e29d4a101e488 (patch)
tree61a746231d30817be73416a7d67763fd677a1042 /lib/libdvben50221/en50221_app_epg.c
parent6b350466c4902c5b137e0efaf1d189128a7f18f5 (diff)
downloadlinux-dvb-apps-ab959d7b4194715870128e616b8e29d4a101e488.tar.gz
Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207
Diffstat (limited to 'lib/libdvben50221/en50221_app_epg.c')
-rw-r--r--lib/libdvben50221/en50221_app_epg.c167
1 files changed, 167 insertions, 0 deletions
diff --git a/lib/libdvben50221/en50221_app_epg.c b/lib/libdvben50221/en50221_app_epg.c
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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;
+}