/usr/include/bitstream/scte/104.h is in libbitstream-dev 1.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* 104.h: SCTE 104 Automation to Compression Communications API
*****************************************************************************
* Copyright (C) 2016 OpenHeadend
*
* Authors: Christophe Massiot <cmassiot@openheadend.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:
* - SCTE 104 2012 (Automation to Compression Communications API)
*/
#ifndef __BITSTREAM_SCTE_104_H__
#define __BITSTREAM_SCTE_104_H__
#include <bitstream/common.h>
#ifdef __cplusplus
extern "C"
{
#endif
/*****************************************************************************
* SCTE 104 - timestamp structure
*****************************************************************************/
#define SCTE104T_HEADER_SIZE 1
#define SCTE104T_TYPE_NONE 0
#define SCTE104T_TYPE_UTC 1
#define SCTE104T_TYPE_VITC 2
#define SCTE104T_TYPE_GPI 3
static inline uint8_t scte104t_get_type(const uint8_t *p)
{
return p[0];
}
static inline uint8_t scte104t_get_size(const uint8_t *p)
{
switch (scte104t_get_type(p)) {
case SCTE104T_TYPE_NONE:
default:
return 1;
case SCTE104T_TYPE_UTC:
return 7;
case SCTE104T_TYPE_VITC:
return 5;
case SCTE104T_TYPE_GPI:
return 3;
}
}
static inline uint32_t scte104t_get_utc_seconds(const uint8_t *p)
{
return ((uint32_t)p[1] << 24) |
((uint32_t)p[2] << 16) |
((uint32_t)p[3] << 8) |
(uint32_t)p[4];
}
static inline uint16_t scte104t_get_utc_microseconds(const uint8_t *p)
{
return ((uint16_t)p[5] << 8) |
(uint16_t)p[6];
}
static inline uint8_t scte104t_get_hours(const uint8_t *p)
{
return p[1];
}
static inline uint8_t scte104t_get_minutes(const uint8_t *p)
{
return p[2];
}
static inline uint8_t scte104t_get_seconds(const uint8_t *p)
{
return p[3];
}
static inline uint8_t scte104t_get_frames(const uint8_t *p)
{
return p[4];
}
static inline uint8_t scte104t_get_gpi_number(const uint8_t *p)
{
return p[1];
}
static inline uint8_t scte104t_get_gpi_edge(const uint8_t *p)
{
return p[2];
}
/*****************************************************************************
* Single and multiple operation message
*****************************************************************************/
#define SCTE104_HEADER_SIZE 4
#define SCTE104_OPID_INJECT_SECTION 0x0100
#define SCTE104_OPID_SPLICE 0x0101
#define SCTE104_OPID_SPLICE_NULL 0x0102
#define SCTE104_OPID_TIME_SIGNAL 0x0104
#define SCTE104_OPID_MULTIPLE 0xffff
static inline uint16_t scte104_get_opid(const uint8_t *p)
{
return (p[0] << 8) | p[1];
}
static inline uint16_t scte104_get_size(const uint8_t *p)
{
return (p[2] << 8) | p[3];
}
/*****************************************************************************
* Single operation message
*****************************************************************************/
#define SCTE104S_HEADER_SIZE 13
static inline uint16_t scte104s_get_result(const uint8_t *p)
{
return (p[4] << 8) | p[5];
}
static inline uint16_t scte104s_get_result_extension(const uint8_t *p)
{
return (p[6] << 8) | p[7];
}
static inline uint8_t scte104s_get_protocol(const uint8_t *p)
{
return p[8];
}
static inline uint8_t scte104s_get_as_index(const uint8_t *p)
{
return p[9];
}
static inline uint8_t scte104s_get_message_number(const uint8_t *p)
{
return p[10];
}
static inline uint16_t scte104s_get_dpi_pid_index(const uint8_t *p)
{
return (p[11] << 8) | p[12];
}
static inline uint8_t *scte104s_get_data(const uint8_t *p, uint16_t *pi_size)
{
*pi_size = scte104_get_size(p) - SCTE104_HEADER_SIZE;
return (uint8_t *)&p[13];
}
static inline bool scte104s_validate(const uint8_t *p)
{
uint16_t i_size = scte104_get_size(p);
if (i_size < SCTE104S_HEADER_SIZE)
return false;
return true;
}
/*****************************************************************************
* Multiple operation message : operations
*****************************************************************************/
#define SCTE104O_HEADER_SIZE 4
static inline uint16_t scte104o_get_opid(const uint8_t *p)
{
return (p[0] << 8) | p[1];
}
static inline uint16_t scte104o_get_data_length(const uint8_t *p)
{
return (p[2] << 8) | p[3];
}
static inline uint8_t *scte104o_get_data(const uint8_t *p)
{
return (uint8_t *)&p[4];
}
/*****************************************************************************
* Multiple operation message
*****************************************************************************/
#define SCTE104M_HEADER_SIZE 10
static inline uint8_t scte104m_get_protocol(const uint8_t *p)
{
return p[4];
}
static inline uint8_t scte104m_get_as_index(const uint8_t *p)
{
return p[5];
}
static inline uint8_t scte104m_get_message_number(const uint8_t *p)
{
return p[6];
}
static inline uint16_t scte104m_get_dpi_pid_index(const uint8_t *p)
{
return (p[7] << 8) | p[8];
}
static inline uint8_t scte104m_get_scte35_protocol(const uint8_t *p)
{
return p[9];
}
static inline uint8_t *scte104m_get_timestamp(const uint8_t *p)
{
return (uint8_t *)&p[10];
}
static inline uint8_t scte104m_get_num_ops(const uint8_t *p)
{
p = scte104m_get_timestamp(p);
return p[scte104t_get_size(p)];
}
static inline uint8_t *scte104m_get_op(const uint8_t *p, uint8_t i_op)
{
uint16_t i_size = scte104_get_size(p);
const uint8_t *p_end = p + i_size;
p = scte104m_get_timestamp(p);
p += scte104t_get_size(p) + 1;
while (i_op--) {
if (p + SCTE104O_HEADER_SIZE > p_end ||
p + scte104o_get_data_length(p) + SCTE104O_HEADER_SIZE > p_end)
return NULL;
p += scte104o_get_data_length(p) + SCTE104O_HEADER_SIZE;
}
return (uint8_t *)p;
}
static inline bool scte104m_validate(const uint8_t *p)
{
uint16_t i_size = scte104_get_size(p);
if (i_size < SCTE104M_HEADER_SIZE + SCTE104T_HEADER_SIZE)
return false;
const uint8_t *p_timestamp = scte104m_get_timestamp(p);
if (i_size < SCTE104M_HEADER_SIZE + scte104t_get_size(p_timestamp) + 1)
return false;
uint8_t i_op = scte104m_get_num_ops(p);
if (scte104m_get_op(p, i_op - 1) == NULL)
return false;
return true;
}
/*****************************************************************************
* SCTE-104 : splice_request_data
*****************************************************************************/
#define SCTE104SRD_HEADER_SIZE 14
#define SCTE104SRD_START_NORMAL 1
#define SCTE104SRD_START_IMMEDIATE 2
#define SCTE104SRD_END_NORMAL 3
#define SCTE104SRD_END_IMMEDIATE 4
#define SCTE104SRD_CANCEL 5
static inline uint8_t scte104srd_get_insert_type(const uint8_t *p)
{
return p[0];
}
static inline uint32_t scte104srd_get_event_id(const uint8_t *p)
{
return ((uint32_t)p[1] << 24) |
((uint32_t)p[2] << 16) |
((uint32_t)p[3] << 8) |
(uint32_t)p[4];
}
static inline uint16_t scte104srd_get_unique_program_id(const uint8_t *p)
{
return ((uint16_t)p[5] << 8) |
(uint16_t)p[6];
}
static inline uint16_t scte104srd_get_pre_roll_time(const uint8_t *p)
{
return ((uint16_t)p[7] << 8) |
(uint16_t)p[8];
}
static inline uint16_t scte104srd_get_break_duration(const uint8_t *p)
{
return ((uint16_t)p[9] << 8) |
(uint16_t)p[10];
}
static inline uint8_t scte104srd_get_avail_num(const uint8_t *p)
{
return p[11];
}
static inline uint8_t scte104srd_get_avails_expected(const uint8_t *p)
{
return p[12];
}
static inline uint8_t scte104srd_get_auto_return(const uint8_t *p)
{
return p[13];
}
#ifdef __cplusplus
}
#endif
#endif
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