1 files changed, 227 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/tvct_section.h b/lib/libucsi/atsc/tvct_section.h
new file mode 100644
index 0000000..77bc5f4
--- /dev/null
+++ b/lib/libucsi/atsc/tvct_section.h
@@ -0,0 +1,227 @@
+/*
+ * 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_TVCT_SECTION_H
+#define _UCSI_ATSC_TVCT_SECTION_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/atsc/section.h>
+
+/**
+ * atsc_tvct_section structure.
+ */
+struct atsc_tvct_section {
+	struct atsc_section_psip head;
+
+	uint8_t num_channels_in_section;
+	/* struct atsc_tvct_channel channels[] */
+ 	/* struct atsc_tvct_channel_part2 part2 */
+} __ucsi_packed;
+
+struct atsc_tvct_channel {
+	uint16_t short_name[7]; // UTF-16 network ordered
+  EBIT4(uint32_t reserved			: 4; ,
+	uint32_t major_channel_number		:10; ,
+  	uint32_t minor_channel_number		:10; ,
+	uint32_t modulation_mode		: 8; );
+	uint32_t carrier_frequency;
+	uint16_t channel_TSID;
+	uint16_t program_number;
+  EBIT7(uint16_t ETM_location			: 2; ,
+	uint16_t access_controlled		: 1; ,
+	uint16_t hidden				: 1; ,
+	uint16_t reserved1			: 2; ,
+	uint16_t hide_guide			: 1; ,
+	uint16_t reserved2			: 3; ,
+	uint16_t service_type			: 6; );
+	uint16_t source_id;
+  EBIT2(uint16_t reserved3			: 6; ,
+	uint16_t descriptors_length		:10; );
+	/* struct descriptor descriptors[] */
+} __ucsi_packed;
+
+struct atsc_tvct_section_part2 {
+  EBIT2(uint16_t reserved			: 6; ,
+	uint16_t descriptors_length		:10; );
+	/* struct descriptor descriptors[] */
+} __ucsi_packed;
+
+static inline struct atsc_tvct_channel *atsc_tvct_section_channels_first(struct atsc_tvct_section *tvct);
+static inline struct atsc_tvct_channel *
+	atsc_tvct_section_channels_next(struct atsc_tvct_section *tvct, struct atsc_tvct_channel *pos, int idx);
+
+/**
+ * Process a atsc_tvct_section.
+ *
+ * @param section Pointer to an atsc_section_psip structure.
+ * @return atsc_tvct_section pointer, or NULL on error.
+ */
+struct atsc_tvct_section *atsc_tvct_section_codec(struct atsc_section_psip *section);
+
+/**
+ * Accessor for the transport_stream_id field of a TVCT.
+ *
+ * @param tvct TVCT pointer.
+ * @return The transport_stream_id.
+ */
+static inline uint16_t atsc_tvct_section_transport_stream_id(struct atsc_tvct_section *tvct)
+{
+	return tvct->head.ext_head.table_id_ext;
+}
+
+/**
+ * Iterator for the channels field in an atsc_tvct_section.
+ *
+ * @param mgt atsc_tvct_section pointer.
+ * @param pos Variable containing a pointer to the current atsc_tvct_channel.
+ * @param idx Integer used to count which channel we in.
+ */
+#define atsc_tvct_section_channels_for_each(mgt, pos, idx) \
+	for ((pos) = atsc_tvct_section_channels_first(mgt), idx=0; \
+	     (pos); \
+	     (pos) = atsc_tvct_section_channels_next(mgt, pos, ++idx))
+
+/**
+ * Iterator for the descriptors field in a atsc_tvct_channel structure.
+ *
+ * @param channel atsc_tvct_channel pointer.
+ * @param pos Variable containing a pointer to the current descriptor.
+ */
+#define atsc_tvct_channel_descriptors_for_each(channel, pos) \
+	for ((pos) = atsc_tvct_channel_descriptors_first(channel); \
+	     (pos); \
+	     (pos) = atsc_tvct_channel_descriptors_next(channel, pos))
+
+/**
+ * Accessor for the second part of an atsc_tvct_section.
+ *
+ * @param mgt atsc_tvct_section pointer.
+ * @return atsc_tvct_section_part2 pointer.
+ */
+static inline struct atsc_tvct_section_part2 *
+	atsc_tvct_section_part2(struct atsc_tvct_section *mgt)
+{
+	int pos = sizeof(struct atsc_tvct_section);
+
+	struct atsc_tvct_channel *cur_channel;
+	int idx;
+	atsc_tvct_section_channels_for_each(mgt, cur_channel, idx) {
+		pos += sizeof(struct atsc_tvct_channel);
+		pos += cur_channel->descriptors_length;
+	}
+
+	return (struct atsc_tvct_section_part2 *) (((uint8_t*) mgt) + pos);
+}
+
+/**
+ * Iterator for the descriptors field in a atsc_tvct_section structure.
+ *
+ * @param part2 atsc_tvct_section_part2 pointer.
+ * @param pos Variable containing a pointer to the current descriptor.
+ */
+#define atsc_tvct_section_part2_descriptors_for_each(part2, pos) \
+	for ((pos) = atsc_tvct_section_part2_descriptors_first(part2); \
+	     (pos); \
+	     (pos) = atsc_tvct_section_part2_descriptors_next(part2, pos))
+
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct atsc_tvct_channel *
+	atsc_tvct_section_channels_first(struct atsc_tvct_section *tvct)
+{
+	size_t pos = sizeof(struct atsc_tvct_section);
+
+	if (tvct->num_channels_in_section == 0)
+		return NULL;
+
+	return (struct atsc_tvct_channel*) (((uint8_t *) tvct) + pos);
+}
+
+static inline struct atsc_tvct_channel *
+	atsc_tvct_section_channels_next(struct atsc_tvct_section *tvct,
+				     struct atsc_tvct_channel *pos,
+				     int idx)
+{
+	if (idx >= tvct->num_channels_in_section)
+		return NULL;
+
+	return (struct atsc_tvct_channel *)
+		(((uint8_t*) pos) + sizeof(struct atsc_tvct_channel) + pos->descriptors_length);
+}
+
+static inline struct descriptor *
+	atsc_tvct_channel_descriptors_first(struct atsc_tvct_channel *channel)
+{
+	size_t pos = sizeof(struct atsc_tvct_channel);
+
+	if (channel->descriptors_length == 0)
+		return NULL;
+
+	return (struct descriptor*) (((uint8_t *) channel) + pos);
+}
+
+static inline struct descriptor *
+	atsc_tvct_channel_descriptors_next(struct atsc_tvct_channel *channel,
+					struct descriptor *pos)
+{
+	return next_descriptor((uint8_t*) channel + sizeof(struct atsc_tvct_channel),
+				channel->descriptors_length,
+				pos);
+}
+
+static inline struct descriptor *
+	atsc_tvct_section_part2_descriptors_first(struct atsc_tvct_section_part2 *part2)
+{
+	size_t pos = sizeof(struct atsc_tvct_section_part2);
+
+	if (part2->descriptors_length == 0)
+		return NULL;
+
+	return (struct descriptor*) (((uint8_t *) part2) + pos);
+}
+
+static inline struct descriptor *
+	atsc_tvct_section_part2_descriptors_next(struct atsc_tvct_section_part2 *part2,
+						 struct descriptor *pos)
+{
+	return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_tvct_section_part2),
+				part2->descriptors_length,
+				pos);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif