Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 167 insertions, 0 deletions

diff --git a/lib/libdvben50221/en50221_app_epg.c b/lib/libdvben50221/en50221_app_epg.c
new file mode 100644
index 0000000..87b4743
--- /dev/null
+++ b/lib/libdvben50221/en50221_app_epg.c
@@ -0,0 +1,167 @@
+/*
+    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;
+}