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146 lines
4.2 KiB
146 lines
4.2 KiB
/*****************************************************************************
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* 337.h: SMPTE 337 Non-PCM data in AES3
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*****************************************************************************
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* Copyright (C) 2016 OpenHeadend
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*
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* Authors: Christophe Massiot <cmassiot@openheadend.tv>
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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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* - SMPTE 337
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* - SMPTE 338
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*/
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#ifndef __BITSTREAM_SMPTE_337_H__
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#define __BITSTREAM_SMPTE_337_H__
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#include <stdint.h> /* uint8_t, uint16_t, etc... */
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#include <stdbool.h> /* bool */
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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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* SMPTE 337 burst preamble (16-bit mode only)
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*****************************************************************************/
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#define S337_PREAMBLE_SIZE 8
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#define S337_PREAMBLE_A1 0xf8
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#define S337_PREAMBLE_A2 0x72
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#define S337_PREAMBLE_B1 0x4e
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#define S337_PREAMBLE_B2 0x1f
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#define S337_TYPE_NULL 0
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#define S337_TYPE_A52 1
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#define S337_TYPE_TIMESTAMP 2
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#define S337_TYPE_PAUSE 3
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#define S337_TYPE_A52E 16
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#define S337_TYPE_VSYNC 26
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#define S337_TYPE_DOLBY_E 28
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#define S337_TYPE_CAPTION 29
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#define S337_TYPE_USER 30
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#define S337_MODE_16 0
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#define S337_MODE_20 1
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#define S337_MODE_24 2
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#define S337_MODE_RESERVED 3
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#define S337_TYPE_A52_REP_RATE_FLAG 0x08
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#define S337_TYPE_A52_NOT_FULL_SVC 0x10
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static inline void s337_set_data_type(uint8_t *p_s337, uint8_t i_data_type)
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{
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p_s337[5] &= ~0x1f;
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p_s337[5] |= i_data_type & 0x1f;
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}
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static inline uint8_t s337_get_data_type(const uint8_t *p_s337)
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{
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return p_s337[5] & 0x1f;
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}
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static inline void s337_set_data_mode(uint8_t *p_s337, uint8_t i_data_mode)
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{
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p_s337[5] &= ~0x60;
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p_s337[5] |= (i_data_mode << 5) & 0x60;
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}
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static inline uint8_t s337_get_data_mode(const uint8_t *p_s337)
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{
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return (p_s337[5] & 0x60) >> 5;
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}
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static inline void s337_set_error(uint8_t *p_s337)
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{
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p_s337[5] |= 0x80;
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}
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static inline void s337_clear_error(uint8_t *p_s337)
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{
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p_s337[5] &= ~0x80;
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}
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static inline bool s337_get_error(const uint8_t *p_s337)
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{
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return p_s337[5] & 0x80;
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}
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static inline void s337_set_data_type_dep(uint8_t *p_s337, uint8_t i_data_type_dep)
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{
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p_s337[4] &= ~0x1f;
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p_s337[4] |= i_data_type_dep & 0x1f;
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}
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static inline uint8_t s337_get_data_type_dep(const uint8_t *p_s337)
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{
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return p_s337[4] & 0x1f;
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}
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static inline void s337_set_data_stream(uint8_t *p_s337, uint8_t i_data_stream)
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{
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p_s337[4] &= ~0xe0;
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p_s337[4] |= (i_data_stream << 5) & 0xe0;
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}
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static inline uint8_t s337_get_data_stream(const uint8_t *p_s337)
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{
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return (p_s337[4] & 0xe0) >> 5;
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}
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static inline void s337_set_length(uint8_t *p_s337, uint16_t i_length)
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{
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p_s337[6] = i_length >> 8;
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p_s337[7] = i_length & 0xff;
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}
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static inline uint16_t s337_get_length(const uint8_t *p_s337)
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{
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return (p_s337[6] << 8) | p_s337[7];
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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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