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author | etobi <git@e-tobi.net> | 2013-09-03 09:48:41 +0200 |
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committer | etobi <git@e-tobi.net> | 2013-09-03 09:48:41 +0200 |
commit | ab959d7b4194715870128e616b8e29d4a101e488 (patch) | |
tree | 61a746231d30817be73416a7d67763fd677a1042 /lib/libucsi/atsc/cvct_section.h | |
parent | 6b350466c4902c5b137e0efaf1d189128a7f18f5 (diff) | |
download | linux-dvb-apps-ab959d7b4194715870128e616b8e29d4a101e488.tar.gz |
Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207
Diffstat (limited to 'lib/libucsi/atsc/cvct_section.h')
-rw-r--r-- | lib/libucsi/atsc/cvct_section.h | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/cvct_section.h b/lib/libucsi/atsc/cvct_section.h new file mode 100644 index 0000000..c3d418a --- /dev/null +++ b/lib/libucsi/atsc/cvct_section.h @@ -0,0 +1,228 @@ +/* + * 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_CVCT_SECTION_H +#define _UCSI_ATSC_CVCT_SECTION_H 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/atsc/section.h> + +/** + * atsc_cvct_section structure. + */ +struct atsc_cvct_section { + struct atsc_section_psip head; + + uint8_t num_channels_in_section; + /* struct atsc_cvct_channel channels[] */ + /* struct atsc_cvct_channel_part2 part2 */ +} __ucsi_packed; + +struct atsc_cvct_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; + EBIT8(uint16_t ETM_location : 2; , + uint16_t access_controlled : 1; , + uint16_t hidden : 1; , + uint16_t path_select : 1; , + uint16_t out_of_band : 1; , + 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_cvct_section_part2 { + EBIT2(uint16_t reserved : 6; , + uint16_t descriptors_length :10; ); + /* struct descriptor descriptors[] */ +} __ucsi_packed; + +static inline struct atsc_cvct_channel *atsc_cvct_section_channels_first(struct atsc_cvct_section *cvct); +static inline struct atsc_cvct_channel * + atsc_cvct_section_channels_next(struct atsc_cvct_section *cvct, struct atsc_cvct_channel *pos, int idx); + +/** + * Process a atsc_cvct_section. + * + * @param section Pointer to anj atsc_section_psip structure. + * @return atsc_cvct_section pointer, or NULL on error. + */ +struct atsc_cvct_section *atsc_cvct_section_codec(struct atsc_section_psip *section); + +/** + * Accessor for the transport_stream_id field of a CVCT. + * + * @param cvdt CVDT pointer. + * @return The transport_stream_id. + */ +static inline uint16_t atsc_cvct_section_transport_stream_id(struct atsc_cvct_section *cvct) +{ + return cvct->head.ext_head.table_id_ext; +} + +/** + * Iterator for the tables field in an atsc_cvct_section. + * + * @param mgt atsc_cvct_section pointer. + * @param pos Variable containing a pointer to the current atsc_cvct_channel. + * @param idx Integer used to count which table we in. + */ +#define atsc_cvct_section_channels_for_each(mgt, pos, idx) \ + for ((pos) = atsc_cvct_section_channels_first(mgt), idx=0; \ + (pos); \ + (pos) = atsc_cvct_section_channels_next(mgt, pos, ++idx)) + +/** + * Iterator for the descriptors field in a atsc_cvct_channel structure. + * + * @param table atsc_cvct_channel pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_cvct_channel_descriptors_for_each(table, pos) \ + for ((pos) = atsc_cvct_channel_descriptors_first(table); \ + (pos); \ + (pos) = atsc_cvct_channel_descriptors_next(table, pos)) + +/** + * Accessor for the second part of an atsc_cvct_section. + * + * @param mgt atsc_cvct_section pointer. + * @return atsc_cvct_section_part2 pointer. + */ +static inline struct atsc_cvct_section_part2 * + atsc_cvct_section_part2(struct atsc_cvct_section *mgt) +{ + int pos = sizeof(struct atsc_cvct_section); + + struct atsc_cvct_channel *cur_table; + int idx; + atsc_cvct_section_channels_for_each(mgt, cur_table, idx) { + pos += sizeof(struct atsc_cvct_channel); + pos += cur_table->descriptors_length; + } + + return (struct atsc_cvct_section_part2 *) (((uint8_t*) mgt) + pos); +} + +/** + * Iterator for the descriptors field in a atsc_cvct_section structure. + * + * @param part2 atsc_cvct_section_part2 pointer. + * @param pos Variable containing a pointer to the current descriptor. + */ +#define atsc_cvct_section_part2_descriptors_for_each(part2, pos) \ + for ((pos) = atsc_cvct_section_part2_descriptors_first(part2); \ + (pos); \ + (pos) = atsc_cvct_section_part2_descriptors_next(part2, pos)) + + + + + + + + + + + +/******************************** PRIVATE CODE ********************************/ +static inline struct atsc_cvct_channel * + atsc_cvct_section_channels_first(struct atsc_cvct_section *cvct) +{ + size_t pos = sizeof(struct atsc_cvct_section); + + if (cvct->num_channels_in_section == 0) + return NULL; + + return (struct atsc_cvct_channel*) (((uint8_t *) cvct) + pos); +} + +static inline struct atsc_cvct_channel * + atsc_cvct_section_channels_next(struct atsc_cvct_section *cvct, + struct atsc_cvct_channel *pos, + int idx) +{ + if (idx >= cvct->num_channels_in_section) + return NULL; + + return (struct atsc_cvct_channel *) + (((uint8_t*) pos) + sizeof(struct atsc_cvct_channel) + pos->descriptors_length); +} + +static inline struct descriptor * + atsc_cvct_channel_descriptors_first(struct atsc_cvct_channel *table) +{ + size_t pos = sizeof(struct atsc_cvct_channel); + + if (table->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) table) + pos); +} + +static inline struct descriptor * + atsc_cvct_channel_descriptors_next(struct atsc_cvct_channel *table, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) table + sizeof(struct atsc_cvct_channel), + table->descriptors_length, + pos); +} + +static inline struct descriptor * + atsc_cvct_section_part2_descriptors_first(struct atsc_cvct_section_part2 *part2) +{ + size_t pos = sizeof(struct atsc_cvct_section_part2); + + if (part2->descriptors_length == 0) + return NULL; + + return (struct descriptor*) (((uint8_t *) part2) + pos); +} + +static inline struct descriptor * + atsc_cvct_section_part2_descriptors_next(struct atsc_cvct_section_part2 *part2, + struct descriptor *pos) +{ + return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_cvct_section_part2), + part2->descriptors_length, + pos); +} + +#ifdef __cplusplus +} +#endif + +#endif |