From ab959d7b4194715870128e616b8e29d4a101e488 Mon Sep 17 00:00:00 2001 From: etobi Date: Tue, 3 Sep 2013 09:48:41 +0200 Subject: Imported Upstream version 1.1.1+rev1207 --- lib/libucsi/atsc/dccsct_section.h | 327 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 327 insertions(+) create mode 100644 lib/libucsi/atsc/dccsct_section.h (limited to 'lib/libucsi/atsc/dccsct_section.h') diff --git a/lib/libucsi/atsc/dccsct_section.h b/lib/libucsi/atsc/dccsct_section.h new file mode 100644 index 0000000..f9f3522 --- /dev/null +++ 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 +#include + +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 -- cgit v1.2.3