Commit 766f4dc6 authored by Kieran Kunhya's avatar Kieran Kunhya

smpte: Add support for 2022-6 HBRMT headers

parent d7339a49
/*****************************************************************************
* 2022_6_hbrmt.h
*****************************************************************************
* Copyright (C) 2015 Open Broadcast Systems Ltd
*
* Authors: Kieran Kunhya <kierank@obe.tv>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject
* to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*****************************************************************************/
/*
* Normative references:
* - SMPTE 2022-6
*/
#ifndef __BITSTREAM_SMPTE_2022_6_HBRMT_H__
#define __BITSTREAM_SMPTE_2022_6_HBRMT_H__
#include <stdint.h> /* uint8_t, uint16_t, etc... */
#include <stdbool.h> /* bool */
#ifdef __cplusplus
extern "C"
{
#endif
/*
* Reminder : High Bit Rate Media Payload Header
0 1 2 3
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Ext |F|VSID | FRCount | R | S | FEC | CF | RESERVE |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MAP | FRAME | FRAME |SAMPLE | FMT-RESERVE |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Video timestamp (only if CF>0) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Header extension (only if Ext > 0) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static inline void smpte_hbrmt_set_ext(uint8_t *p_hbrmt, uint8_t ext)
{
p_hbrmt[0] |= (ext & 0xf) << 4;
}
static inline uint8_t smpte_hbrmt_get_ext(const uint8_t *p_hbrmt)
{
return p_hbrmt[0] >> 4;
}
static inline void smpte_hbrmt_set_video_source_format(uint8_t *p_hbrmt)
{
p_hbrmt[0] |= 0x8;
}
static inline bool smpte_hbrmt_check_video_source_format(const uint8_t *p_hbrmt)
{
return !!(p_hbrmt[0] & 0x8);
}
static inline void smpte_hbrmt_set_video_source_id(uint8_t *p_hbrmt, uint8_t vsid)
{
p_hbrmt[0] |= (vsid & 0x7);
}
static inline uint8_t smpte_hbrmt_get_video_source_id(const uint8_t *p_hbrmt)
{
return p_hbrmt[0] & 0x7;
}
static inline void smpte_hbrmt_set_frame_count(uint8_t *p_hbrmt, uint8_t frcount)
{
p_hbrmt[1] = frcount;
}
static inline uint8_t smpte_hbrmt_get_frame_count(const uint8_t *p_hbrmt)
{
return p_hbrmt[1];
}
static inline void smpte_hbrmt_set_reference_for_time_stamp(uint8_t *p_hbrmt, uint8_t r)
{
p_hbrmt[2] |= (r & 0x3) << 6;
}
static inline uint8_t smpte_hbrmt_get_reference_for_time_stamp(const uint8_t *p_hbrmt)
{
return p_hbrmt[2] >> 6;
}
static inline void smpte_hbrmt_set_video_payload_scrambling(uint8_t *p_hbrmt, uint8_t s)
{
p_hbrmt[2] |= (s & 0x3) << 4;
}
static inline uint8_t smpte_hbrmt_get_video_payload_scrambling(const uint8_t *p_hbrmt)
{
return (p_hbrmt[2] >> 4) & 0x3;
}
static inline void smpte_hbrmt_set_fec(uint8_t *p_hbrmt, uint8_t fec)
{
p_hbrmt[2] |= (fec & 0x7) << 1;
}
static inline uint8_t smpte_hbrmt_get_fec(const uint8_t *p_hbrmt)
{
return (p_hbrmt[2] >> 1) & 0x7;
}
static inline void smpte_hbrmt_set_clock_frequency(uint8_t *p_hbrmt, uint8_t cf)
{
p_hbrmt[2] |= (cf >> 3) & 1;
p_hbrmt[3] |= (cf & 0x7) << 5;
}
static inline uint8_t smpte_hbrmt_get_clock_frequency(const uint8_t *p_hbrmt)
{
return ((p_hbrmt[2] & 1) << 3) | p_hbrmt[3] >> 5;
}
static inline void smpte_hbrmt_set_reserved(uint8_t *p_hbrmt)
{
p_hbrmt[3] &= ~0x1f;
}
static inline void smpte_hbrmt_set_map(uint8_t *p_hbrmt, uint8_t map)
{
p_hbrmt[4] |= (map & 0xf) << 4;
}
static inline uint8_t smpte_hbrmt_get_map(const uint8_t *p_hbrmt)
{
return p_hbrmt[4] >> 4;
}
static inline void smpte_hbrmt_set_frame(uint8_t *p_hbrmt, uint8_t frame)
{
p_hbrmt[4] |= (frame >> 4);
p_hbrmt[5] |= (frame & 0xf) << 4;
}
static inline uint8_t smpte_hbrmt_get_frame(const uint8_t *p_hbrmt)
{
return ((p_hbrmt[4] & 0xf) << 4) | (p_hbrmt[5] >> 4);
}
static inline void smpte_hbrmt_set_frate(uint8_t *p_hbrmt, uint8_t frate)
{
p_hbrmt[5] |= (frate >> 4);
p_hbrmt[6] |= (frate & 0xf) << 4;
}
static inline uint8_t smpte_hbrmt_get_frate(const uint8_t *p_hbrmt)
{
return ((p_hbrmt[5] & 0xf) << 4) | (p_hbrmt[6] >> 4);
}
static inline void smpte_hbrmt_set_sample(uint8_t *p_hbrmt, uint8_t sample)
{
p_hbrmt[6] |= (sample & 0xf);
}
static inline uint8_t smpte_hbrmt_get_sample(const uint8_t *p_hbrmt)
{
return p_hbrmt[6] & 0xf;
}
static inline void smpte_hbrmt_set_fmt_reserve(uint8_t *p_hbrmt)
{
p_hbrmt[7] = 0;
}
static inline void smpte_hbrmt_set_timestamp(uint8_t *p_hbrmt, uint32_t timestamp)
{
p_hbrmt[8] = (timestamp >> 24) & 0xff;
p_hbrmt[9] = (timestamp >> 16) & 0xff;
p_hbrmt[10] = (timestamp >> 8) & 0xff;
p_hbrmt[11] = (timestamp >> 0) & 0xff;
}
static inline uint32_t smpte_hbrmt_get_timestamp(const uint8_t *p_hbrmt)
{
return (p_hbrmt[8] << 24) | (p_hbrmt[9] << 16) | (p_hbrmt[10] << 8) | p_hbrmt[11];
}
#ifdef __cplusplus
}
#endif
#endif
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