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author | Mark Purcell <msp@debian.org> | 2008-06-22 11:00:40 +1000 |
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committer | etobi <git@e-tobi.net> | 2013-09-03 09:48:42 +0200 |
commit | 891c51ff368ed700dec6025eeb47ce4d96f76418 (patch) | |
tree | 3729664829e4faa691d403274f38eb10890b533c /lib/libucsi/atsc/rrt_section.h | |
parent | 1c6e1f28f54ec2606c23936c1d8689f2be55a86c (diff) | |
parent | ab959d7b4194715870128e616b8e29d4a101e488 (diff) | |
download | linux-dvb-apps-debian/1.1.1+rev1207-1.tar.gz |
Imported Debian patch 1.1.1+rev1207-1debian/1.1.1+rev1207-1
Diffstat (limited to 'lib/libucsi/atsc/rrt_section.h')
-rw-r--r-- | lib/libucsi/atsc/rrt_section.h | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/rrt_section.h b/lib/libucsi/atsc/rrt_section.h new file mode 100644 index 0000000..fba4596 --- /dev/null +++ b/lib/libucsi/atsc/rrt_section.h @@ -0,0 +1,379 @@ +/* + * 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_RRT_SECTION_H +#define _UCSI_ATSC_RRT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> +#include <libucsi/atsc/types.h> + +/** + * atsc_rrt_section structure. + */ +struct atsc_rrt_section { + struct atsc_section_psip head; + + uint8_t rating_region_name_length; + /* struct atsc_text rating_region_name_text */ + /* struct atsc_rrt_section_part2 part2 */ +} __ucsi_packed; + +struct atsc_rrt_section_part2 { + uint8_t dimensions_defined; + /* struct atsc_rrt_dimension dimensions[] */ + /* struct atsc_rrt_section_part3 part3 */ +} __ucsi_packed; + +struct atsc_rrt_dimension { + uint8_t dimension_name_length; + /* struct atsc_text dimension_name_text */ + /* struct atsc_rrt_dimension_part2 part2 */ +} __ucsi_packed; + +struct atsc_rrt_dimension_part2 { + EBIT3(uint8_t reserved : 3; , + uint8_t graduated_scale : 1; , + uint8_t values_defined : 4; ); + /* struct atsc_rrt_dimension_value values[] */ +} __ucsi_packed; + +struct atsc_rrt_dimension_value { + uint8_t abbrev_rating_value_length; + /* struct atsc_text abbrev_rating_value_text */ + /* struct atsc_rrt_dimension_value_part2 */ +} __ucsi_packed; + +struct atsc_rrt_dimension_value_part2 { + uint8_t rating_value_length; + /* struct atsc_text rating_value_text */ +} __ucsi_packed; + +struct atsc_rrt_section_part3 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + + +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_first(struct atsc_rrt_section_part2 *part2); +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_next(struct atsc_rrt_section_part2 *part2, + struct atsc_rrt_dimension *pos, + int idx); +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_first(struct atsc_rrt_dimension_part2 *part2); +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_next(struct atsc_rrt_dimension_part2 *part2, + struct atsc_rrt_dimension_value *pos, + int idx); + +/** + * Process a atsc_rrt_section. + * + * @param section Pointer to anj atsc_section_psip structure. + * @return atsc_rrt_section pointer, or NULL on error. + */ +struct atsc_rrt_section *atsc_rrt_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the rating_region field of an RRT. + * + * @param rrt RRT pointer. + * @return The transport_stream_id. + */ +static inline uint8_t atsc_rrt_section_rating_region(struct atsc_rrt_section *rrt) +{ + return rrt->head.ext_head.table_id_ext & 0xff; +} + +/** + * Accessor for the rating_region_name_text field of an RRT. + * + * @param rrt RRT pointer. + * @return struct atsc_text pointer, or NULL. + */ +static inline struct atsc_text *atsc_rrt_section_rating_region_name_text(struct atsc_rrt_section *rrt) +{ + if (rrt->rating_region_name_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) rrt) + sizeof(struct atsc_rrt_section)); +} + +/** + * Accessor for the part2 field of an RRT. + * + * @param rrt RRT pointer. + * @return struct atsc_rrt_section_part2 pointer. + */ +static inline struct atsc_rrt_section_part2 *atsc_rrt_section_part2(struct atsc_rrt_section *rrt) +{ + return (struct atsc_rrt_section_part2 *) + (((uint8_t*) rrt) + sizeof(struct atsc_rrt_section) + + rrt->rating_region_name_length); +} + +/** + * Iterator for the dimensions field in an atsc_rrt_section_part2. + * + * @param rrt atsc_rrt_section pointer. + * @param pos Variable containing a pointer to the current atsc_rrt_dimension. + * @param idx Integer used to count which dimension we are in. + */ +#define atsc_rrt_section_dimensions_for_each(rrt, pos, idx) \ + for ((pos) = atsc_rrt_section_dimensions_first(rrt), idx=0; \ + (pos); \ + (pos) = atsc_rrt_section_dimensions_next(rrt, pos, ++idx)) + +/** + * Accessor for the dimension_name_text field of an atsc_rrt_dimension. + * + * @param dimension atsc_rrt_dimension pointer. + * @return struct atsc_text pointer, or NULL on error. + */ +static inline struct atsc_text *atsc_rrt_dimension_name_text(struct atsc_rrt_dimension *dimension) +{ + if (dimension->dimension_name_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) dimension) + sizeof(struct atsc_rrt_dimension)); +} + +/** + * Accessor for the part2 field of an atsc_rrt_dimension. + * + * @param dimension atsc_rrt_dimension pointer. + * @return struct atsc_rrt_dimension_part2 pointer. + */ +static inline struct atsc_rrt_dimension_part2 *atsc_rrt_dimension_part2(struct atsc_rrt_dimension *dimension) +{ + return (struct atsc_rrt_dimension_part2 *) + (((uint8_t*) dimension) + + sizeof(struct atsc_rrt_dimension) + + dimension->dimension_name_length); +} + +/** + * Iterator for the values field in a atsc_rrt_dimension_part2 structure. + * + * @param part2 atsc_rrt_dimension_part2 pointer. + * @param pos Variable containing a pointer to the current value. + * @param idx Integer used to count which value we are in + */ +#define atsc_rrt_dimension_part2_values_for_each(part2, pos, idx) \ + for ((pos) = atsc_rrt_dimension_part2_values_first(part2), idx=0; \ + (pos); \ + (pos) = atsc_rrt_dimension_part2_values_next(part2, pos, ++idx)) + +/** + * Accessor for the dimension_name_text field of an atsc_rrt_dimension. + * + * @param dimension atsc_rrt_dimension pointer. + * @return struct atsc_text pointer. + */ +static inline struct atsc_text * + atsc_rrt_dimension_value_abbrev_rating_value_text(struct atsc_rrt_dimension_value *value) +{ + if (value->abbrev_rating_value_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) value) + sizeof(struct atsc_rrt_dimension_value)); +} + +/** + * Accessor for the part2 field of an atsc_rrt_dimension_value. + * + * @param value atsc_rrt_dimension_value pointer. + * @return struct atsc_rrt_dimension_value_part2 pointer. + */ +static inline struct atsc_rrt_dimension_value_part2 *atsc_rrt_dimension_value_part2(struct atsc_rrt_dimension_value *value) +{ + return (struct atsc_rrt_dimension_value_part2 *) + (((uint8_t*) value) + + sizeof(struct atsc_rrt_dimension_value) + + value->abbrev_rating_value_length); +} + +/** + * Accessor for the rating_value_text field of an atsc_rrt_dimension_value_part2. + * + * @param part2 atsc_rrt_dimension_value_part2 pointer. + * @return struct atsc_text pointer. + */ +static inline struct atsc_text *atsc_rrt_dimension_value_part2_rating_value_text(struct atsc_rrt_dimension_value_part2 *part2) +{ + if (part2->rating_value_length == 0) + return NULL; + + return (struct atsc_text*)(((uint8_t*) part2) + sizeof(struct atsc_rrt_dimension_value_part2)); +} + +/** + * Accessor for the third part of an atsc_rrt_section. + * + * @param part2 atsc_rrt_section_part2 pointer. + * @return atsc_rrt_section_part3 pointer. + */ +static inline struct atsc_rrt_section_part3 * + atsc_rrt_section_part3(struct atsc_rrt_section_part2 *part2) +{ + int pos = sizeof(struct atsc_rrt_section_part2); + + struct atsc_rrt_dimension *cur_dimension; + int idx; + atsc_rrt_section_dimensions_for_each(part2, cur_dimension, idx) { + pos += sizeof(struct atsc_rrt_dimension); + pos += cur_dimension->dimension_name_length; + pos += sizeof(struct atsc_rrt_dimension_part2); + + // now we need to iterate over the values. yuck + struct atsc_rrt_dimension_part2 *dpart2 = atsc_rrt_dimension_part2(cur_dimension); + struct atsc_rrt_dimension_value *cur_value; + int vidx; + atsc_rrt_dimension_part2_values_for_each(dpart2, cur_value, vidx) { + pos += sizeof(struct atsc_rrt_dimension_value); + pos += cur_value->abbrev_rating_value_length; + + struct atsc_rrt_dimension_value_part2 *vpart2 = atsc_rrt_dimension_value_part2(cur_value); + pos += sizeof(struct atsc_rrt_dimension_value_part2); + pos += vpart2->rating_value_length; + } + } + + return (struct atsc_rrt_section_part3 *) (((uint8_t*) part2) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_rrt_section structure. + * + * @param part3 atsc_rrt_section_part3 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_rrt_section_part3_descriptors_for_each(part3, pos) \ + for ((pos) = atsc_rrt_section_part3_descriptors_first(part3); \ + (pos); \ + (pos) = atsc_rrt_section_part3_descriptors_next(part3, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_first(struct atsc_rrt_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_rrt_section_part2); + + if (part2->dimensions_defined == 0) + return NULL; + + return (struct atsc_rrt_dimension*) (((uint8_t *) part2) + pos); +} + +static inline struct atsc_rrt_dimension * + atsc_rrt_section_dimensions_next(struct atsc_rrt_section_part2 *part2, + struct atsc_rrt_dimension *pos, + int idx) +{ + if (idx >= part2->dimensions_defined) + return NULL; + + struct atsc_rrt_dimension_part2 *dpart2 = atsc_rrt_dimension_part2(pos); + int len = sizeof(struct atsc_rrt_dimension_part2); + + // now we need to iterate over the values. yuck + struct atsc_rrt_dimension_value *cur_value; + int vidx; + atsc_rrt_dimension_part2_values_for_each(dpart2, cur_value, vidx) { + len += sizeof(struct atsc_rrt_dimension_value); + len += cur_value->abbrev_rating_value_length; + + struct atsc_rrt_dimension_value_part2 *vpart2 = atsc_rrt_dimension_value_part2(cur_value); + len += sizeof(struct atsc_rrt_dimension_value_part2); + len += vpart2->rating_value_length; + } + + return (struct atsc_rrt_dimension *) (((uint8_t*) dpart2) + len); +} + +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_first(struct atsc_rrt_dimension_part2 *part2) +{ + size_t pos = sizeof(struct atsc_rrt_dimension_part2); + + if (part2->values_defined == 0) + return NULL; + + return (struct atsc_rrt_dimension_value*) (((uint8_t *) part2) + pos); +} + +static inline struct atsc_rrt_dimension_value * + atsc_rrt_dimension_part2_values_next(struct atsc_rrt_dimension_part2 *part2, + struct atsc_rrt_dimension_value *pos, + int idx) +{ + if (idx >= part2->values_defined) + return NULL; + + struct atsc_rrt_dimension_value_part2 *vpart2 = atsc_rrt_dimension_value_part2(pos); + int len = sizeof(struct atsc_rrt_dimension_value_part2); + len += vpart2->rating_value_length; + + return (struct atsc_rrt_dimension_value *) (((uint8_t*) vpart2) + len); +} + +static inline struct descriptor * + atsc_rrt_section_part3_descriptors_first(struct atsc_rrt_section_part3 *part3) +{ + size_t pos = sizeof(struct atsc_rrt_section_part3); + + if (part3->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part3) + pos); +} + +static inline struct descriptor * + atsc_rrt_section_part3_descriptors_next(struct atsc_rrt_section_part3 *part3, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part3 + sizeof(struct atsc_rrt_section_part3), + part3->descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif |