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authorMark Purcell <msp@debian.org>2008-06-22 11:00:40 +1000
committeretobi <git@e-tobi.net>2013-09-03 09:48:42 +0200
commit891c51ff368ed700dec6025eeb47ce4d96f76418 (patch)
tree3729664829e4faa691d403274f38eb10890b533c /lib/libucsi/dvb/linkage_descriptor.h
parent1c6e1f28f54ec2606c23936c1d8689f2be55a86c (diff)
parentab959d7b4194715870128e616b8e29d4a101e488 (diff)
downloadlinux-dvb-apps-891c51ff368ed700dec6025eeb47ce4d96f76418.tar.gz
Imported Debian patch 1.1.1+rev1207-1debian/1.1.1+rev1207-1
Diffstat (limited to 'lib/libucsi/dvb/linkage_descriptor.h')
-rw-r--r--lib/libucsi/dvb/linkage_descriptor.h480
1 files changed, 480 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/linkage_descriptor.h b/lib/libucsi/dvb/linkage_descriptor.h
new file mode 100644
index 0000000..d2be789
--- /dev/null
+++ b/lib/libucsi/dvb/linkage_descriptor.h
@@ -0,0 +1,480 @@
+/*
+ * section and descriptor parser
+ *
+ * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
+ * Copyright (C) 2005 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 library 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef _UCSI_DVB_LINKAGE_DESCRIPTOR
+#define _UCSI_DVB_LINKAGE_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+#include <libucsi/types.h>
+
+/**
+ * Possible values for linkage_type.
+ */
+enum {
+ DVB_LINKAGE_TYPE_INFORMATION = 0x01,
+ DVB_LINKAGE_TYPE_EPG = 0x02,
+ DVB_LINKAGE_TYPE_CA_REPLACEMENT = 0x03,
+ DVB_LINKAGE_TYPE_TS_WITH_BAT_NIT = 0x04,
+ DVB_LINKAGE_TYPE_SERVICE_REPLACMENT = 0x05,
+ DVB_LINKAGE_TYPE_DATA_BCAST = 0x06,
+ DVB_LINKAGE_TYPE_RCS_MAP = 0x07,
+ DVB_LINKAGE_TYPE_MOBILE_HANDOVER = 0x08,
+ DVB_LINKAGE_TYPE_SOFTWARE_UPDATE = 0x09,
+ DVB_LINKAGE_TYPE_TS_WITH_SSU_BAT_NIT = 0x0a,
+ DVB_LINKAGE_TYPE_IP_MAC_NOTIFICATION = 0x0b,
+ DVB_LINKAGE_TYPE_TS_WITH_INT_BAT_NIT = 0x0c,
+};
+
+/**
+ * Possible values for hand_over_type.
+ */
+enum {
+ DVB_HAND_OVER_TYPE_IDENTICAL_NEIGHBOURING_COUNTRY = 0x01,
+ DVB_HAND_OVER_TYPE_LOCAL_VARIATION = 0x02,
+ DVB_HAND_OVER_TYPE_ASSOCIATED_SERVICE = 0x03,
+};
+
+/**
+ * Possible values for origin_type.
+ */
+enum {
+ DVB_ORIGIN_TYPE_NIT = 0x00,
+ DVB_ORIGIN_TYPE_SDT = 0x01,
+};
+
+/**
+ * dvb_linkage_descriptor structure.
+ */
+struct dvb_linkage_descriptor {
+ struct descriptor d;
+
+ uint16_t transport_stream_id;
+ uint16_t original_network_id;
+ uint16_t service_id;
+ uint8_t linkage_type;
+ /* uint8_t data[] */
+} __ucsi_packed;
+
+/**
+ * Data for a linkage_type of 0x08.
+ */
+struct dvb_linkage_data_08 {
+ EBIT3(uint8_t hand_over_type : 4; ,
+ uint8_t reserved : 3; ,
+ uint8_t origin_type : 1; );
+ /* uint16_t network_id if hand_over_type == 1,2,3 */
+ /* uint16_t initial_service_id if origin_type = 0 */
+ /* uint8_t data[] */
+} __ucsi_packed;
+
+/**
+ * Data for an linkage_type of 0x0b (IP/MAC Notification Table).
+ */
+struct dvb_linkage_data_0b {
+ uint8_t platform_id_data_length;
+ /* struct platform_id ids[] */
+} __ucsi_packed;
+
+/**
+ * Entries in the ids field of a dvb_linkage_data_0b.
+ */
+struct dvb_platform_id {
+ EBIT2(uint32_t platform_id : 24; ,
+ uint8_t platform_name_loop_length : 8; );
+ /* struct platform_name names[] */
+} __ucsi_packed;
+
+/**
+ * Entries in the names field of a dvb_platform_id.
+ */
+struct dvb_platform_name {
+ iso639lang_t language_code;
+ uint8_t platform_name_length;
+ /* uint8_t text[] */
+} __ucsi_packed;
+
+/**
+ * Data for a linkage_type of 0x0c (IP/MAC Notification Table).
+ */
+struct dvb_linkage_data_0c {
+ uint8_t table_type;
+ /* uint16_t bouquet_id if table_type == 0x02 */
+} __ucsi_packed;
+
+
+/**
+ * Process a dvb_linkage_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @return dvb_linkage_descriptor pointer, or NULL on error.
+ */
+static inline struct dvb_linkage_descriptor*
+ dvb_linkage_descriptor_codec(struct descriptor* d)
+{
+ uint32_t pos = 0;
+ uint8_t* buf = (uint8_t*) d + 2;
+ uint32_t len = d->len;
+ struct dvb_linkage_descriptor *p =
+ (struct dvb_linkage_descriptor*) d;
+
+ if (len < (sizeof(struct dvb_linkage_descriptor) - 2))
+ return NULL;
+
+ bswap16(buf);
+ bswap16(buf+2);
+ bswap16(buf+4);
+
+ pos += sizeof(struct dvb_linkage_descriptor) - 2;
+
+ if (p->linkage_type == 0x08) {
+ struct dvb_linkage_data_08 *d08;
+
+ if ((len - pos) < sizeof(struct dvb_linkage_data_08))
+ return NULL;
+ d08 = (struct dvb_linkage_data_08 *) (buf+pos);
+ pos += sizeof(struct dvb_linkage_data_08);
+
+ switch(d08->hand_over_type) {
+ case 1:
+ case 2:
+ case 3:
+ if ((len - pos) < 2)
+ return NULL;
+ bswap16(buf+pos);
+ pos += 2;
+ break;
+ }
+ if (d08->origin_type == 0) {
+ if ((len - pos) < 2)
+ return NULL;
+ bswap16(buf+pos);
+ pos+=2;
+ }
+
+ } else if (p->linkage_type == 0x0b) {
+ uint32_t pos2=0;
+ struct dvb_linkage_data_0b *l_0b = (struct dvb_linkage_data_0b *) (buf + pos);
+
+ if ((len - pos) < sizeof(struct dvb_linkage_data_0b))
+ return NULL;
+
+ pos += sizeof(struct dvb_linkage_data_0b);
+ if ((len - pos) < l_0b->platform_id_data_length)
+ return NULL;
+
+ while (pos2 < l_0b->platform_id_data_length) {
+ bswap32(buf + pos + pos2);
+
+ struct dvb_platform_id *p_id = (struct dvb_platform_id *) (buf + pos + pos2);
+ if ((len - pos - pos2) < p_id->platform_name_loop_length)
+ return NULL;
+
+ pos2 += sizeof(struct dvb_platform_id) + p_id->platform_name_loop_length;
+ }
+
+ pos += pos2;
+ } else if (p->linkage_type == 0x0c) {
+ struct dvb_linkage_data_0c *l_0c = (struct dvb_linkage_data_0c *) (buf + pos);
+
+ if ((len - pos) < sizeof(struct dvb_linkage_data_0c))
+ return NULL;
+ pos += sizeof(struct dvb_linkage_data_0c);
+
+ if (l_0c->table_type == 0x02) {
+ if ((len - pos) < 2)
+ return NULL;
+ bswap16(buf+pos);
+ }
+ }
+
+ return (struct dvb_linkage_descriptor*) d;
+}
+
+/**
+ * Accessor for the data field of a dvb_linkage_descriptor.
+ *
+ * @param d dvb_linkage_descriptor pointer.
+ * @return Pointer to the data field.
+ */
+static inline uint8_t *
+ dvb_linkage_descriptor_data(struct dvb_linkage_descriptor *d)
+{
+ return (uint8_t *) d + sizeof(struct dvb_linkage_descriptor);
+}
+
+/**
+ * Determine the length of the data field of a dvb_linkage_descriptor.
+ *
+ * @param d dvb_linkage_descriptor pointer.
+ * @return Length of the field in bytes.
+ */
+static inline int
+ dvb_linkage_descriptor_data_length(struct dvb_linkage_descriptor *d)
+{
+ return d->d.len - 7;
+}
+
+/**
+ * Accessor for a dvb_linkage_data_08 pointer.
+ *
+ * @param d dvb_linkage_descriptor pointer.
+ * @return Pointer to the data field.
+ */
+static inline struct dvb_linkage_data_08 *
+ dvb_linkage_data_08(struct dvb_linkage_descriptor *d)
+{
+ if (d->linkage_type != 0x08)
+ return NULL;
+ return (struct dvb_linkage_data_08 *) dvb_linkage_descriptor_data(d);
+}
+
+/**
+ * Accessor for the network_id field of a dvb_linkage_data_08.
+ *
+ * @param d dvb_linkage_descriptor pointer
+ * @param d08 dvb_linkage_data_08 pointer.
+ * @return network_id, or -1 if not present
+ */
+static inline int
+ dvb_linkage_data_08_network_id(struct dvb_linkage_descriptor *d, struct dvb_linkage_data_08 *d08)
+{
+ if (d->linkage_type != 0x08)
+ return -1;
+
+ switch(d08->hand_over_type) {
+ case 1:
+ case 2:
+ case 3:
+ return *((uint16_t*) ((uint8_t*) d08 + sizeof(struct dvb_linkage_data_08)));
+ }
+
+ return -1;
+}
+
+/**
+ * Accessor for the initial_service_id field of a dvb_linkage_data_08.
+ *
+ * @param d dvb_linkage_descriptor pointer
+ * @param d08 dvb_linkage_data_08 pointer.
+ * @return initial_service_id, or -1 if not present
+ */
+static inline int
+ dvb_linkage_data_08_initial_service_id(struct dvb_linkage_descriptor *d, struct dvb_linkage_data_08 *d08)
+{
+ uint8_t *pos;
+
+ if (d->linkage_type != 0x08)
+ return -1;
+ if (d08->origin_type != 0)
+ return -1;
+
+ pos = ((uint8_t*) d08) + sizeof(struct dvb_linkage_data_08);
+ switch(d08->hand_over_type) {
+ case 1:
+ case 2:
+ case 3:
+ pos +=2;
+ break;
+ }
+
+ return *((uint16_t*) pos);
+}
+
+/**
+ * Accessor for the data field of a dvb_linkage_data_08.
+ *
+ * @param d dvb_linkage_descriptor pointer
+ * @param d08 dvb_linkage_data_08 pointer.
+ * @param length Pointer to int destination for data length.
+ * @return Pointer to the data field, or NULL if invalid
+ */
+static inline uint8_t *
+ dvb_linkage_data_08_data(struct dvb_linkage_descriptor *d, struct dvb_linkage_data_08 *d08, int *length)
+{
+ uint8_t *pos;
+ int used = 0;
+
+ if (d->linkage_type != 0x08) {
+ *length = 0;
+ return NULL;
+ }
+
+ pos = ((uint8_t*) d08) + sizeof(struct dvb_linkage_data_08);
+ switch(d08->hand_over_type) {
+ case 1:
+ case 2:
+ case 3:
+ pos += 2;
+ used += 2;
+ break;
+ }
+ if (d08->origin_type == 0) {
+ pos+=2;
+ used+=2;
+ }
+
+ *length = dvb_linkage_descriptor_data_length(d) - (sizeof(struct dvb_linkage_data_08) + used);
+ return pos;
+}
+
+/**
+ * Accessor for a dvb_linkage_data_0b pointer.
+ *
+ * @param d dvb_linkage_descriptor pointer.
+ * @return Pointer to the data field.
+ */
+static inline struct dvb_linkage_data_0b *
+ dvb_linkage_data_0b(struct dvb_linkage_descriptor *d)
+{
+ if (d->linkage_type != 0x0b)
+ return NULL;
+ return (struct dvb_linkage_data_0b *) dvb_linkage_descriptor_data(d);
+}
+
+/**
+ * Iterator for the platform_id field of a dvb_linkage_data_0b.
+ *
+ * @param linkage dvb_linkage_data_0b pointer.
+ * @param pos Variable containing a pointer to the current dvb_platform_id.
+ */
+#define dvb_linkage_data_0b_platform_id_for_each(linkage, pos) \
+ for ((pos) = dvb_platform_id_first(linkage); \
+ (pos); \
+ (pos) = dvb_platform_id_next(linkage, pos))
+
+/**
+ * Iterator for the platform_name field of a dvb_platform_id.
+ *
+ * @param platid dvb_platform_id pointer.
+ * @param pos Variable containing a pointer to the current dvb_platform_name.
+ */
+#define dvb_platform_id_platform_name_for_each(platid, pos) \
+ for ((pos) = dvb_platform_name_first(platid); \
+ (pos); \
+ (pos) = dvb_platform_name_next(platid, pos))
+
+/**
+ * Accessor for the text field of a dvb_platform_name.
+ *
+ * @param p dvb_platform_name pointer.
+ * @return Pointer to the field.
+ */
+static inline uint8_t *
+ dvb_platform_name_text(struct dvb_platform_name *p)
+{
+ return (uint8_t *) p + sizeof(struct dvb_platform_name);
+}
+
+/**
+ * Accessor for a dvb_linkage_data_0c pointer.
+ *
+ * @param d dvb_linkage_descriptor pointer.
+ * @return Pointer to the data field.
+ */
+static inline struct dvb_linkage_data_0c *
+ dvb_linkage_data_0c(struct dvb_linkage_descriptor *d)
+{
+ if (d->linkage_type != 0x0c)
+ return NULL;
+ return (struct dvb_linkage_data_0c *) dvb_linkage_descriptor_data(d);
+}
+
+/**
+ * Accessor for the bouquet_id field of a dvb_linkage_data_0c if table_id == 0x02.
+ *
+ * @param l_0c dvb_linkage_data_0c pointer.
+ * @return The bouquet field, or -1 on error.
+ */
+static inline int
+ dvb_linkage_data_0c_bouquet_id(struct dvb_linkage_data_0c *l_0c)
+{
+ if (l_0c->table_type != 0x02)
+ return -1;
+
+ return *((uint16_t *) ((uint8_t*) l_0c + 1));
+}
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct dvb_platform_id *
+ dvb_platform_id_first(struct dvb_linkage_data_0b *d)
+{
+ if (d->platform_id_data_length == 0)
+ return NULL;
+
+ return (struct dvb_platform_id *) ((uint8_t *) d + sizeof(struct dvb_linkage_data_0b));
+}
+
+static inline struct dvb_platform_id *
+ dvb_platform_id_next(struct dvb_linkage_data_0b *d,
+ struct dvb_platform_id *pos)
+{
+ uint8_t *end = (uint8_t *) d + d->platform_id_data_length;
+ uint8_t *next = (uint8_t *) pos +
+ sizeof(struct dvb_platform_id) +
+ pos->platform_name_loop_length;
+
+ if (next >= end)
+ return NULL;
+
+ return (struct dvb_platform_id *) next;
+}
+
+static inline struct dvb_platform_name *
+ dvb_platform_name_first(struct dvb_platform_id *p)
+{
+ if (p->platform_name_loop_length == 0)
+ return NULL;
+
+ return (struct dvb_platform_name *) ((uint8_t *) p + sizeof(struct dvb_platform_id));
+}
+
+static inline struct dvb_platform_name *
+ dvb_platform_name_next(struct dvb_platform_id *p,
+ struct dvb_platform_name *pos)
+{
+ uint8_t *end = (uint8_t *) p + p->platform_name_loop_length;
+ uint8_t *next = (uint8_t *) pos +
+ sizeof(struct dvb_platform_name) +
+ pos->platform_name_length;
+
+ if (next >= end)
+ return NULL;
+
+ return (struct dvb_platform_name *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif