1 files changed, 227 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/types.h b/lib/libucsi/atsc/types.h
new file mode 100644
index 0000000..4d4b802
--- /dev/null
+++ b/lib/libucsi/atsc/types.h
@@ -0,0 +1,227 @@
+	/*
+ * section and descriptor parser
+ *
+ * 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_TYPES_H
+#define _UCSI_ATSC_TYPES_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+#include <time.h>
+#include <libucsi/types.h>
+
+enum atsc_vct_modulation {
+	ATSC_VCT_MODULATION_ANALOG 	= 0x01,
+	ATSC_VCT_MODULATION_SCTE_MODE1 	= 0x02,
+	ATSC_VCT_MODULATION_SCTE_MODE2 	= 0x03,
+	ATSC_VCT_MODULATION_8VSB 	= 0x04,
+	ATSC_VCT_MODULATION_16VSB 	= 0x05,
+};
+
+enum atsc_vct_service_type {
+	ATSC_VCT_SERVICE_TYPE_ANALOG 	= 0x01,
+	ATSC_VCT_SERVICE_TYPE_TV 	= 0x02,
+	ATSC_VCT_SERVICE_TYPE_AUDIO 	= 0x03,
+	ATSC_VCT_SERVICE_TYPE_DATA 	= 0x04,
+};
+
+enum atsc_etm_location {
+	ATSC_VCT_ETM_NONE	 		= 0x00,
+	ATSC_VCT_ETM_IN_THIS_PTC 		= 0x01,
+	ATSC_VCT_ETM_IN_CHANNEL_TSID 		= 0x02,
+};
+
+enum atsc_text_compress_type {
+	ATSC_TEXT_COMPRESS_NONE			= 0x00,
+	ATSC_TEXT_COMPRESS_PROGRAM_TITLE	= 0x01,
+	ATSC_TEXT_COMPRESS_PROGRAM_DESCRIPTION	= 0x02,
+};
+
+enum atsc_text_segment_mode {
+	ATSC_TEXT_SEGMENT_MODE_UNICODE_RANGE_MIN	= 0x00,
+	ATSC_TEXT_SEGMENT_MODE_UNICODE_RANGE_MAX	= 0x33,
+	ATSC_TEXT_SEGMENT_MODE_SCSU			= 0x3e,
+	ATSC_TEXT_SEGMENT_MODE_UTF16			= 0x3f,
+	ATSC_TEXT_SEGMENT_MODE_TAIWAN_BITMAP		= 0x40,
+	ATSC_TEXT_SEGMENT_MODE_TAIWAN_CODEWORD_BITMAP	= 0x41,
+};
+
+typedef uint32_t atsctime_t;
+
+struct atsc_text {
+	uint8_t number_strings;
+	/* struct atsc_text_string strings[] */
+};
+
+struct atsc_text_string {
+	iso639lang_t language_code;
+	uint8_t number_segments;
+	/* struct atsc_text_string_segment segments[] */
+};
+
+struct atsc_text_string_segment {
+	uint8_t compression_type;
+	uint8_t mode;
+	uint8_t number_bytes;
+	/* uint8_t bytes[] */
+};
+
+/**
+ * Iterator for strings field of an atsc_text structure.
+ *
+ * @param txt atsc_text pointer.
+ * @param pos Variable holding a pointer to the current atsc_text_string.
+ * @param idx Iterator variable.
+ */
+#define atsc_text_strings_for_each(txt, pos, idx) \
+	for ((pos) = atsc_text_strings_first(txt), idx=0; \
+	     (pos); \
+	     (pos) = atsc_text_strings_next(txt, pos, ++idx))
+
+/**
+ * Iterator for segments field of an atsc_text_string structure.
+ *
+ * @param str atsc_text_string pointer.
+ * @param pos Variable holding a pointer to the current atsc_text_string_segment.
+ * @param idx Iterator variable.
+ */
+#define atsc_text_string_segments_for_each(str, pos, idx) \
+	for ((pos) = atsc_text_string_segments_first(str), idx=0; \
+	     (pos); \
+	     (pos) = atsc_text_string_segments_next(str, pos, ++idx))
+
+/**
+ * Accessor for the bytes field of an atsc_text_string_segment.
+ *
+ * @param seg atsc_text_string_segment pointer.
+ * @return Pointer to the bytes.
+ */
+static inline uint8_t*
+	atsc_text_string_segment_bytes(struct atsc_text_string_segment *d)
+{
+	return ((uint8_t*) d) + sizeof(struct atsc_text_string_segment);
+}
+
+/**
+ * Validate a buffer containing an atsc_text structure.
+ *
+ * @param buf Start of the atsc_text structure.
+ * @param len Length in bytes of the buffer.
+ * @return 0 if valid, nonzero if not.
+ */
+extern int atsc_text_validate(uint8_t *buf, int len);
+
+/**
+ * Decodes an atsc_text_segment with mode < 0x3e. Decompression of the ATSC text encoding IS
+ * supported. The output text will be in the UTF-8 encoding.
+ *
+ * @param segment Pointer to the segment to decode.
+ * @param destbuf Pointer to the malloc()ed buffer to append text to (pass NULL if none).
+ * @param destbufsize Size of destbuf in bytes.
+ * @param destbufpos Position within destbuf. This will be updated to point after the end of the
+ * string on exit.
+ * @return New value of destbufpos, or < 0 on error.
+ */
+extern int atsc_text_segment_decode(struct atsc_text_string_segment *segment,
+				    uint8_t **destbuf, size_t *destbufsize, size_t *destbufpos);
+
+/**
+ * Convert from ATSC time to unix time_t.
+ *
+ * @param atsc ATSC time.
+ * @return The time value.
+ */
+extern time_t atsctime_to_unixtime(atsctime_t atsc);
+
+/**
+ * Convert from unix time_t to atsc time.
+ *
+ * @param t unix time_t.
+ * @return The atsc time value.
+ */
+extern atsctime_t unixtime_to_atsctime(time_t t);
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct atsc_text_string*
+	atsc_text_strings_first(struct atsc_text *txt)
+{
+	if (txt->number_strings == 0)
+		return NULL;
+
+	return (struct atsc_text_string *)
+		((uint8_t*) txt + sizeof(struct atsc_text));
+}
+
+static inline struct atsc_text_string*
+	atsc_text_strings_next(struct atsc_text *txt, struct atsc_text_string *pos, int idx)
+{
+	int i;
+	uint8_t *buf;
+
+	if (idx >= txt->number_strings)
+		return NULL;
+
+	buf = ((uint8_t*) pos) + sizeof(struct atsc_text_string);
+	for(i=0; i < pos->number_segments; i++) {
+		struct atsc_text_string_segment *seg =
+			(struct atsc_text_string_segment *) buf;
+
+		buf += sizeof(struct atsc_text_string_segment);
+		buf += seg->number_bytes;
+	}
+
+	return (struct atsc_text_string *) buf;
+}
+
+static inline struct atsc_text_string_segment*
+	atsc_text_string_segments_first(struct atsc_text_string *str)
+{
+	if (str->number_segments == 0)
+		return NULL;
+
+	return (struct atsc_text_string_segment *)
+		((uint8_t*) str + sizeof(struct atsc_text_string));
+}
+
+static inline struct atsc_text_string_segment*
+	atsc_text_string_segments_next(struct atsc_text_string *str,
+				       struct atsc_text_string_segment *pos, int idx)
+{
+	if (idx >= str->number_segments)
+		return NULL;
+
+	return (struct atsc_text_string_segment *)
+		(((uint8_t*) pos) + sizeof(struct atsc_text_string_segment) + pos->number_bytes);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif