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135 lines
4.2 KiB
135 lines
4.2 KiB
/*****************************************************************************
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* desc_4b.h: ETSI EN 300 468 Descriptor 0x4b: NVOD reference descriptor
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*****************************************************************************
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* Copyright (C) 2009-2010 VideoLAN
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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* 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_4B_H__
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#define __BITSTREAM_DVB_DESC_4B_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 0x4b: NVOD reference descriptor
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*****************************************************************************/
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#define DESC4B_HEADER_SIZE DESC_HEADER_SIZE
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#define DESC4B_REFERENCE_SIZE 6
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static inline void desc4b_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x4b);
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}
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static inline uint16_t desc4bn_get_tsid(const uint8_t *p_desc_n)
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{
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return (p_desc_n[0] << 8) | p_desc_n[1];
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}
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static inline void desc4bn_set_tsid(uint8_t *p_desc_n, uint16_t i_tsid)
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{
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p_desc_n[0] = (i_tsid >> 8) & 0xff;
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p_desc_n[1] = i_tsid & 0xff;
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}
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static inline uint16_t desc4bn_get_onid(const uint8_t *p_desc_n)
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{
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return (p_desc_n[2] << 8) | p_desc_n[3];
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}
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static inline void desc4bn_set_onid(uint8_t *p_desc_n, uint16_t i_onid)
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{
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p_desc_n[2] = (i_onid >> 8) & 0xff;
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p_desc_n[3] = i_onid & 0xff;
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}
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static inline uint16_t desc4bn_get_sid(const uint8_t *p_desc_n)
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{
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return (p_desc_n[4] << 8) | p_desc_n[5];
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}
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static inline void desc4bn_set_sid(uint8_t *p_desc_n, uint16_t i_sid)
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{
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p_desc_n[4] = (i_sid >> 8) & 0xff;
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p_desc_n[5] = i_sid & 0xff;
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}
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static inline uint8_t *desc4b_get_reference(uint8_t *p_desc, uint8_t n)
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{
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uint8_t *p_desc_n = p_desc + DESC4B_HEADER_SIZE + n * DESC4B_REFERENCE_SIZE;
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if (p_desc_n + DESC4B_REFERENCE_SIZE - p_desc
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> desc_get_length(p_desc) + DESC4B_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 bool desc4b_validate(const uint8_t *p_desc)
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{
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return !(desc_get_length(p_desc) % DESC4B_REFERENCE_SIZE);
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}
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static inline void desc4b_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 = desc4b_get_reference(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,
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"<NVOD_REFERENCE_DESC tsid=\"%u\" onid=\"%u\" sid=\"%u\"/>",
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desc4bn_get_tsid(p_desc_n),
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desc4bn_get_onid(p_desc_n),
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desc4bn_get_sid(p_desc_n)
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);
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break;
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default:
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pf_print(opaque,
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" - desc 4b nvod_reference tsid=%u onid=%u sid=%u",
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desc4bn_get_tsid(p_desc_n),
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desc4bn_get_onid(p_desc_n),
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desc4bn_get_sid(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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