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-rw-r--r--lib/libucsi/atsc/dccsct_section.h327
1 files changed, 327 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/dccsct_section.h b/lib/libucsi/atsc/dccsct_section.h
new file mode 100644
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+++ b/lib/libucsi/atsc/dccsct_section.h
@@ -0,0 +1,327 @@
+/*
+ * 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_ATSC_DCCSCT_SECTION_H
+#define _UCSI_ATSC_DCCSCT_SECTION_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/atsc/section.h>
+#include <libucsi/atsc/types.h>
+
+enum atsc_dccst_update_types {
+ ATSC_DCCST_UPDATE_NEW_GENRE = 0x01,
+ ATSC_DCCST_UPDATE_NEW_STATE = 0x02,
+ ATSC_DCCST_UPDATE_NEW_COUNTY = 0x03,
+};
+
+/**
+ * atsc_dccsct_section structure.
+ */
+struct atsc_dccsct_section {
+ struct atsc_section_psip head;
+
+ uint8_t updates_defined;
+ /* struct atsc_dccsct_update updates */
+ /* struct atsc_dccsct_section_part2 part2 */
+} __ucsi_packed;
+
+struct atsc_dccsct_update {
+ uint8_t update_type;
+ uint8_t update_data_length;
+ /* struct atsc_dccsct_update_XXX data -- depends on update_type */
+ /* struct atsc_dccsct_update_part2 part2 */
+} __ucsi_packed;
+
+struct atsc_dccsct_update_new_genre {
+ uint8_t genre_category_code;
+ /* atsc_text name */
+} __ucsi_packed;
+
+struct atsc_dccsct_update_new_state {
+ uint8_t dcc_state_location_code;
+ /* atsc_text name */
+} __ucsi_packed;
+
+struct atsc_dccsct_update_new_county {
+ uint8_t state_code;
+ EBIT2(uint16_t reserved : 6; ,
+ uint16_t dcc_county_location_code :10; );
+ /* atsc_text name */
+} __ucsi_packed;
+
+struct atsc_dccsct_update_part2 {
+ EBIT2(uint16_t reserved : 6; ,
+ uint16_t descriptors_length :10; );
+ /* struct descriptor descriptors[] */
+} __ucsi_packed;
+
+struct atsc_dccsct_section_part2 {
+ EBIT2(uint16_t reserved : 6; ,
+ uint16_t descriptors_length :10; );
+ /* struct descriptor descriptors[] */
+} __ucsi_packed;
+
+/**
+ * Process an atsc_dccsct_section.
+ *
+ * @param section Pointer to an atsc_section_psip structure.
+ * @return atsc_dccsct_section pointer, or NULL on error.
+ */
+struct atsc_dccsct_section *atsc_dccsct_section_codec(struct atsc_section_psip *section);
+
+/**
+ * Accessor for the dccsct_type field of a dccsct.
+ *
+ * @param dccsct dccsct pointer.
+ * @return The dccsct_type.
+ */
+static inline uint16_t atsc_dccsct_section_dccsct_type(struct atsc_dccsct_section *dccsct)
+{
+ return dccsct->head.ext_head.table_id_ext;
+}
+
+/**
+ * Iterator for the updates field in an atsc_dccsct_section.
+ *
+ * @param dccsct atsc_dccsct_section pointer.
+ * @param pos Variable containing a pointer to the current atsc_dccsct_update.
+ * @param idx Integer used to count which test we are in.
+ */
+#define atsc_dccsct_section_updates_for_each(dccsct, pos, idx) \
+ for ((pos) = atsc_dccsct_section_updates_first(dccsct), idx=0; \
+ (pos); \
+ (pos) = atsc_dccsct_section_updates_next(dccsct, pos, ++idx))
+
+/**
+ * Accessor for the data field of a new genre atsc_dccsct_update.
+ *
+ * @param update atsc_dccsct_update pointer.
+ * @return struct atsc_dccsct_update_new_genre pointer.
+ */
+static inline struct atsc_dccsct_update_new_genre *atsc_dccsct_update_new_genre(struct atsc_dccsct_update *update)
+{
+ if (update->update_type != ATSC_DCCST_UPDATE_NEW_GENRE)
+ return NULL;
+
+ return (struct atsc_dccsct_update_new_genre *)
+ (((uint8_t*) update) + sizeof(struct atsc_dccsct_update));
+}
+
+/**
+ * Accessor for the name field of an atsc_dccsct_update_new_genre.
+ *
+ * @param update atsc_dccsct_update_new_genre pointer.
+ * @return text pointer.
+ */
+static inline struct atsc_text *atsc_dccsct_update_new_genre_name(struct atsc_dccsct_update *update)
+{
+ if ((update->update_data_length - 1) == 0)
+ return NULL;
+
+ return (struct atsc_text *)
+ (((uint8_t*) update) + sizeof(struct atsc_dccsct_update_new_genre));
+}
+
+/**
+ * Accessor for the data field of a new state atsc_dccsct_update.
+ *
+ * @param update atsc_dccsct_update pointer.
+ * @return struct atsc_dccsct_update_new_state pointer.
+ */
+static inline struct atsc_dccsct_update_new_state *
+ atsc_dccsct_update_new_state(struct atsc_dccsct_update *update)
+{
+ if (update->update_type != ATSC_DCCST_UPDATE_NEW_STATE)
+ return NULL;
+
+ return (struct atsc_dccsct_update_new_state *)
+ (((uint8_t*) update) + sizeof(struct atsc_dccsct_update));
+}
+
+/**
+ * Accessor for the name field of an atsc_dccsct_update_new_state.
+ *
+ * @param update atsc_dccsct_update_new_state pointer.
+ * @return text pointer.
+ */
+static inline struct atsc_text *atsc_dccsct_update_new_state_name(struct atsc_dccsct_update *update)
+{
+ if ((update->update_data_length - 1) == 0)
+ return NULL;
+
+ return (struct atsc_text *)
+ (((uint8_t*) update) + sizeof(struct atsc_dccsct_update_new_state));
+}
+
+/**
+ * Accessor for the data field of a new county atsc_dccsct_update.
+ *
+ * @param update atsc_dccsct_update pointer.
+ * @return struct atsc_dccsct_update_new_county pointer.
+ */
+static inline struct atsc_dccsct_update_new_county *
+ atsc_dccsct_update_new_county(struct atsc_dccsct_update *update)
+{
+ if (update->update_type != ATSC_DCCST_UPDATE_NEW_COUNTY)
+ return NULL;
+
+ return (struct atsc_dccsct_update_new_county *)
+ (((uint8_t*) update) + sizeof(struct atsc_dccsct_update));
+}
+
+/**
+ * Accessor for the name field of an atsc_dccsct_update_new_county.
+ *
+ * @param update atsc_dccsct_update_new_county pointer.
+ * @return text pointer.
+ */
+static inline struct atsc_text *atsc_dccsct_update_new_county_name(struct atsc_dccsct_update *update)
+{
+ if ((update->update_data_length - 3) == 0)
+ return NULL;
+
+ return (struct atsc_text*)
+ (((uint8_t*) update) + sizeof(struct atsc_dccsct_update_new_county));
+}
+
+/**
+ * Accessor for the part2 field of an atsc_dccsct_update.
+ *
+ * @param update atsc_dccsct_update pointer.
+ * @return struct atsc_dccsct_test_part2 pointer.
+ */
+static inline struct atsc_dccsct_update_part2 *atsc_dccsct_update_part2(struct atsc_dccsct_update *update)
+{
+ int pos = sizeof(struct atsc_dccsct_update);
+ pos += update->update_data_length;
+
+ return (struct atsc_dccsct_update_part2 *) (((uint8_t*) update) + pos);
+}
+
+/**
+ * Iterator for the descriptors field in an atsc_dccsct_update_part2 structure.
+ *
+ * @param part2 atsc_dccsct_update_part2 pointer.
+ * @param pos Variable containing a pointer to the current descriptor.
+ */
+#define atsc_dccsct_update_part2_descriptors_for_each(part2, pos) \
+ for ((pos) = atsc_dccsct_update_part2_descriptors_first(part2); \
+ (pos); \
+ (pos) = atsc_dccsct_update_part2_descriptors_next(part2, pos))
+
+/**
+ * Iterator for the descriptors field in a atsc_dccsct_section_part2 structure.
+ *
+ * @param part2 atsc_dccsct_section_part2 pointer.
+ * @param pos Variable containing a pointer to the current descriptor.
+ */
+#define atsc_dccsct_section_part2_descriptors_for_each(part2, pos) \
+ for ((pos) = atsc_dccsct_section_part2_descriptors_first(part2); \
+ (pos); \
+ (pos) = atsc_dccsct_section_part2_descriptors_next(part2, pos))
+
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct atsc_dccsct_update *
+ atsc_dccsct_section_updates_first(struct atsc_dccsct_section *dccsct)
+{
+ size_t pos = sizeof(struct atsc_dccsct_section);
+
+ if (dccsct->updates_defined == 0)
+ return NULL;
+
+ return (struct atsc_dccsct_update*) (((uint8_t *) dccsct) + pos);
+}
+
+static inline struct atsc_dccsct_update*
+ atsc_dccsct_section_updates_next(struct atsc_dccsct_section *dccsct,
+ struct atsc_dccsct_update *pos,
+ int idx)
+{
+ if (idx >= dccsct->updates_defined)
+ return NULL;
+
+ struct atsc_dccsct_update_part2 *part2 = atsc_dccsct_update_part2(pos);
+ int len = sizeof(struct atsc_dccsct_update_part2);
+ len += part2->descriptors_length;
+
+ return (struct atsc_dccsct_update *) (((uint8_t*) part2) + len);
+}
+
+static inline struct descriptor *
+ atsc_dccsct_update_part2_descriptors_first(struct atsc_dccsct_update_part2 *part2)
+{
+ size_t pos = sizeof(struct atsc_dccsct_update_part2);
+
+ if (part2->descriptors_length == 0)
+ return NULL;
+
+ return (struct descriptor*) (((uint8_t *) part2) + pos);
+}
+
+static inline struct descriptor *
+ atsc_dccsct_update_part2_descriptors_next(struct atsc_dccsct_update_part2 *part2,
+ struct descriptor *pos)
+{
+ return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_dccsct_update_part2),
+ part2->descriptors_length,
+ pos);
+}
+
+static inline struct descriptor *
+ atsc_dccsct_section_part2_descriptors_first(struct atsc_dccsct_section_part2 *part2)
+{
+ size_t pos = sizeof(struct atsc_dccsct_section_part2);
+
+ if (part2->descriptors_length == 0)
+ return NULL;
+
+ return (struct descriptor*) (((uint8_t *) part2) + pos);
+}
+
+static inline struct descriptor *
+ atsc_dccsct_section_part2_descriptors_next(struct atsc_dccsct_section_part2 *part2,
+ struct descriptor *pos)
+{
+ return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_dccsct_section_part2),
+ part2->descriptors_length,
+ pos);
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif