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96 lines
3.0 KiB
96 lines
3.0 KiB
/*****************************************************************************
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* vbi.h: ETSI EN 301 775 Carriage of VBI in DVB
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*****************************************************************************
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* Copyright (C) 2016 OpenHeadend
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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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 300 775 V1.2.1 (2003-05) (carriage of VBI in DVB)
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*/
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#ifndef __BITSTREAM_DVB_VBI_H__
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#define __BITSTREAM_DVB_VBI_H__
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#include <stdint.h>
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#include <stdbool.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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* PES data field
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*****************************************************************************/
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#define DVBVBI_HEADER_SIZE 1
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#define DVBVBI_UNIT_HEADER_SIZE 2
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#define DVBVBI_DATA_IDENTIFIER 0x10
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#define DVBVBI_ID_TTX_NONSUB 0x02
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#define DVBVBI_ID_TTX_SUB 0x03
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#define DVBVBI_ID_TTX_INVERTED 0xc0
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#define DVBVBI_ID_VPS 0xc3
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#define DVBVBI_ID_WSS 0xc4
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#define DVBVBI_ID_CEA608 0xc5
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#define DVBVBI_ID_RAWVBI 0xc6
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#define DVBVBI_ID_STUFFING 0xff
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#define DVBVBI_LENGTH 0x2c
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/*****************************************************************************
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* Teletext data field
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*****************************************************************************/
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#define DVBVBITTX_FRAMING_CODE 0xe4
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static inline void dvbvbittx_set_field(uint8_t *p, bool field)
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{
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p[0] |= 0xc0;
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if (field)
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p[0] |= 0x20;
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else
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p[0] &= ~0x20;
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}
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static inline bool dvbvbittx_get_field(const uint8_t *p)
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{
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return p[0] & 0x20;
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}
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static inline void dvbvbittx_set_line(uint8_t *p, uint8_t line)
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{
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p[0] &= ~0x1f;
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p[0] |= 0xc0 | (line & 0x1f);
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}
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static inline uint8_t dvbvbittx_get_line(const uint8_t *p)
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{
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return p[0] & 0x1f;
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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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