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146 lines
4.2 KiB
146 lines
4.2 KiB
/*****************************************************************************
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* rst.h: ETSI EN 300 468 Running Status Table (RST)
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*****************************************************************************
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* Copyright (C) 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_RST_H__
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#define __BITSTREAM_DVB_RST_H__
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#include <bitstream/common.h>
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#include <bitstream/mpeg/psi/psi.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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* Running Status Table
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*****************************************************************************/
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#define RST_PID 0x13
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#define RST_TABLE_ID 0x71
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#define RST_HEADER_SIZE PSI_HEADER_SIZE
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#define RST_STATUS_SIZE 9
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static inline void rst_init(uint8_t *p_rst)
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{
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psi_set_tableid(p_rst, RST_TABLE_ID);
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psi_init(p_rst, false);
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}
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static inline void rst_set_length(uint8_t *p_rst, uint16_t i_rst_length)
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{
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psi_set_length(p_rst, i_rst_length & 0x3fff);
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}
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static inline void rstn_init(uint8_t *p_rst_n)
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{
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p_rst_n[8] = 0xf8;
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}
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static inline uint16_t rstn_get_tsid(const uint8_t *p_rst_n)
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{
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return (p_rst_n[0] << 8) | p_rst_n[1];
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}
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static inline void rstn_set_tsid(uint8_t *p_rst_n, uint16_t i_tsid)
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{
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p_rst_n[0] = i_tsid >> 8;
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p_rst_n[1] = i_tsid & 0xff;
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}
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static inline uint16_t rstn_get_onid(const uint8_t *p_rst_n)
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{
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return (p_rst_n[2] << 8) | p_rst_n[3];
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}
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static inline void rstn_set_onid(uint8_t *p_rst_n, uint16_t i_onid)
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{
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p_rst_n[2] = i_onid >> 8;
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p_rst_n[3] = i_onid & 0xff;
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}
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static inline uint16_t rstn_get_service_id(const uint8_t *p_rst_n)
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{
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return (p_rst_n[4] << 8) | p_rst_n[5];
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}
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static inline void rstn_set_service_id(uint8_t *p_rst_n, uint16_t i_service_id)
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{
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p_rst_n[4] = i_service_id >> 8;
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p_rst_n[5] = i_service_id & 0xff;
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}
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static inline uint16_t rstn_get_event_id(const uint8_t *p_rst_n)
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{
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return (p_rst_n[6] << 8) | p_rst_n[7];
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}
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static inline void rstn_set_event_id(uint8_t *p_rst_n, uint16_t i_event_id)
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{
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p_rst_n[6] = i_event_id >> 8;
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p_rst_n[7] = i_event_id & 0xff;
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}
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static inline uint8_t rstn_get_running_status(const uint8_t *p_rst_n)
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{
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return p_rst_n[8] & 0x07;
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}
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static inline void rstn_set_running_status(uint8_t *p_rst_n, uint8_t i_running_status)
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{
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p_rst_n[8] = 0xf8 | (i_running_status & 0x07);
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}
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static inline uint8_t *rst_get_status(uint8_t *p_rst, uint8_t n)
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{
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uint8_t *p_rst_n = p_rst + RST_HEADER_SIZE + n * RST_STATUS_SIZE;
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if (p_rst_n + RST_STATUS_SIZE - p_rst
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> psi_get_length(p_rst) + PSI_HEADER_SIZE)
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return NULL;
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return p_rst_n;
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}
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static inline bool rst_validate(const uint8_t *p_rst)
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{
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if (psi_get_syntax(p_rst) || psi_get_tableid(p_rst) != RST_TABLE_ID)
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return false;
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if (psi_get_length(p_rst) % RST_STATUS_SIZE)
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return false;
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return true;
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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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