diff options
Diffstat (limited to 'lib/libucsi/dvb/ait_application_icons_descriptor.h')
| -rw-r--r-- | lib/libucsi/dvb/ait_application_icons_descriptor.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/ait_application_icons_descriptor.h b/lib/libucsi/dvb/ait_application_icons_descriptor.h new file mode 100644 index 0000000..431cd6c --- /dev/null +++ b/lib/libucsi/dvb/ait_application_icons_descriptor.h @@ -0,0 +1,157 @@ +/* + * 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_DVB_AIT_APPLICATION_ICONS_DESCRIPTOR +#define _UCSI_DVB_AIT_APPLICATION_ICONS_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Possible values for the icon_flags field. + */ +enum { + AIT_APPLICATION_ICON_FLAG_32_32 = 0x001, + AIT_APPLICATION_ICON_FLAG_32_32_43 = 0x002, + AIT_APPLICATION_ICON_FLAG_24_32_169 = 0x004, + + AIT_APPLICATION_ICON_FLAG_64_64 = 0x008, + AIT_APPLICATION_ICON_FLAG_64_64_43 = 0x010, + AIT_APPLICATION_ICON_FLAG_48_64_169 = 0x020, + + AIT_APPLICATION_ICON_FLAG_128_128 = 0x040, + AIT_APPLICATION_ICON_FLAG_128_128_43 = 0x080, + AIT_APPLICATION_ICON_FLAG_96_128_169 = 0x100, +}; + +/** + * dvb_ait_application_icons_descriptor structure. + */ +struct dvb_ait_application_icons_descriptor { + struct descriptor d; + + uint8_t icon_locator_length; + /* uint8_t icon_locator[] */ + /* struct dvb_ait_application_icons_descriptor_part2 */ +} __ucsi_packed; + +/** + * Second part of a dvb_ait_application_icons_descriptor. + */ +struct dvb_ait_application_icons_descriptor_part2 { + uint16_t icon_flags; + /* uint8_t reserved[] */ +} __ucsi_packed; + +/** + * Process a dvb_ait_application_icons_descriptor. + * + * @param d Generic descriptor pointer. + * @return dvb_ait_application_icons_descriptor pointer, or NULL on error. + */ +static inline struct dvb_ait_application_icons_descriptor* + dvb_ait_application_icons_descriptor_codec(struct descriptor* d) +{ + uint8_t* buf = (uint8_t*) d; + uint32_t pos = 0; + uint32_t len = d->len + 2; + struct dvb_ait_application_icons_descriptor *ret = + (struct dvb_ait_application_icons_descriptor *) d; + + if (len < sizeof(struct dvb_ait_application_icons_descriptor)) + return NULL; + if (len < (sizeof(struct dvb_ait_application_icons_descriptor) + ret->icon_locator_length)) + return NULL; + + pos += sizeof(struct dvb_ait_application_icons_descriptor) + ret->icon_locator_length; + + if ((len - pos) < sizeof(struct dvb_ait_application_icons_descriptor_part2)) + return NULL; + bswap16(buf + pos); + + return ret; +} +/** + * Accessor for the icon_locator field of a dvb_ait_application_icons_descriptor. + * + * @param e dvb_ait_application_icons_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_ait_application_icons_descriptor_icon_locator(struct dvb_ait_application_icons_descriptor *e) +{ + return (uint8_t *) e + sizeof(struct dvb_ait_application_icons_descriptor); +} + +/** + * Accessor for the part2 field of a dvb_ait_application_icons_descriptor. + * + * @param e dvb_ait_application_icons_descriptor Pointer. + * @return dvb_ait_application_icons_descriptor_part2 pointer. + */ +static inline struct dvb_ait_application_icons_descriptor_part2 * + dvb_ait_application_icons_descriptor_part2(struct dvb_ait_application_icons_descriptor *e) +{ + return (struct dvb_ait_application_icons_descriptor_part2 *) + ((uint8_t *) e + sizeof(struct dvb_ait_application_icons_descriptor) + + e->icon_locator_length); +} + +/** + * Accessor for the reserved field of a dvb_ait_application_icons_descriptor_part2. + * + * @param e dvb_ait_application_icons_part2 pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_ait_application_icons_descriptor_part2_reserved(struct dvb_ait_application_icons_descriptor_part2 *e) +{ + return (uint8_t *) e + sizeof(struct dvb_ait_application_icons_descriptor_part2); +} + +/** + * Calculate the number of bytes in the reserved field of a dvb_ait_application_icons_descriptor_part2. + * + * @param d dvb_ait_application_icons_descriptorpointer. + * @param part2 dvb_ait_application_icons_descriptor_part2 pointer. + * @return Number of bytes. + */ +static inline int + dvb_ait_application_icons_descriptor_part2_reserved_length(struct dvb_ait_application_icons_descriptor *d, + struct dvb_ait_application_icons_descriptor_part2* part2) +{ + uint8_t *ptr = (uint8_t*) part2 + sizeof(struct dvb_ait_application_icons_descriptor_part2); + uint8_t *end = (uint8_t*) d + d->d.len + 2; + + return (int) (end - ptr); +} + +#ifdef __cplusplus +} +#endif + +#endif |