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129 lines
4.1 KiB
129 lines
4.1 KiB
/*****************************************************************************
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* desc_54.h: ETSI EN 300 468 Descriptor 0x54: Content descriptor
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*****************************************************************************
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* Copyright (C) 2011 Unix Solutions Ltd.
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*
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* Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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/*
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* Normative references:
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* - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems)
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*/
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#ifndef __BITSTREAM_DVB_DESC_54_H__
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#define __BITSTREAM_DVB_DESC_54_H__
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#include <bitstream/common.h>
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#include <bitstream/mpeg/psi/descriptors.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*****************************************************************************
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* Descriptor 0x54: Content descriptor
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*****************************************************************************/
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#define DESC54_HEADER_SIZE DESC_HEADER_SIZE
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#define DESC54_CONTENT_SIZE 2
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static inline void desc54_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x54);
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}
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static inline uint8_t *desc54_get_content(uint8_t *p_desc, uint8_t n)
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{
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uint8_t *p_desc_n = p_desc + DESC54_HEADER_SIZE + n * DESC54_CONTENT_SIZE;
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if (p_desc_n + DESC54_CONTENT_SIZE - p_desc
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> desc_get_length(p_desc) + DESC54_HEADER_SIZE)
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return NULL;
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return p_desc_n;
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}
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static inline uint8_t desc54n_get_content_l1(uint8_t *p_desc_n)
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{
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return p_desc_n[0] >> 4;
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}
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static inline void desc54n_set_content_l1(uint8_t *p_desc_n, uint8_t i_content_l1)
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{
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p_desc_n[0] = (i_content_l1 << 4) | (p_desc_n[0] & 0x0f);
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}
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static inline uint8_t desc54n_get_content_l2(uint8_t *p_desc_n)
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{
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return p_desc_n[0] & 0x0f;
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}
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static inline void desc54n_set_content_l2(uint8_t *p_desc_n, uint8_t i_content_l2)
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{
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p_desc_n[0] = (i_content_l2 & 0x0f) | (p_desc_n[0] & 0xf0);
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}
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static inline uint8_t desc54n_get_user(uint8_t *p_desc_n)
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{
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return p_desc_n[1];
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}
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static inline void desc54n_set_user(uint8_t *p_desc_n, uint8_t i_user)
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{
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p_desc_n[1] = i_user;
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}
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static inline bool desc54_validate(const uint8_t *p_desc)
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{
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return !(desc_get_length(p_desc) % DESC54_CONTENT_SIZE);
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}
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static inline void desc54_print(uint8_t *p_desc, f_print pf_print,
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void *opaque, print_type_t i_print_type)
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{
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uint8_t j = 0;
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uint8_t *p_desc_n;
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while ((p_desc_n = desc54_get_content(p_desc, j)) != NULL) {
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j++;
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switch (i_print_type) {
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case PRINT_XML:
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pf_print(opaque, "<CONTENT_DESC content_l1=\"%u\" content_l2=\"%u\" user=\"%u\"/>",
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desc54n_get_content_l1(p_desc_n),
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desc54n_get_content_l2(p_desc_n),
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desc54n_get_user(p_desc_n)
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);
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break;
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default:
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pf_print(opaque," - desc 54 content content_l1=%u content_l2=%u user=%u",
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desc54n_get_content_l1(p_desc_n),
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desc54n_get_content_l2(p_desc_n),
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desc54n_get_user(p_desc_n)
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);
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}
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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