/usr/include/libdvbv5/pmt.h is in libdvbv5-dev 1.14.2-1.
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* Copyright (c) 2011-2012 - Mauro Carvalho Chehab
* Copyright (c) 2012 - Andre Roth <neolynx@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation version 2.1 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
*/
/**
* @file pmt.h
* @ingroup dvb_table
* @brief Provides the descriptors for PMT MPEG-TS table
* @copyright GNU Lesser General Public License version 2.1 (LGPLv2.1)
* @author Mauro Carvalho Chehab
* @author Andre Roth
*
* @par Relevant specs
* The table described herein is defined at:
* - ISO/IEC 13818-1
*
* @see http://www.etherguidesystems.com/help/sdos/mpeg/syntax/tablesections/pmts.aspx
*
* @par Bug Report
* Please submit bug reports and patches to linux-media@vger.kernel.org
*/
#ifndef _PMT_H
#define _PMT_H
#include <stdint.h>
#include <unistd.h> /* ssize_t */
#include <libdvbv5/header.h>
/**
* @def DVB_TABLE_PMT
* @brief PMT table ID
* @ingroup dvb_table
*/
#define DVB_TABLE_PMT 0x02
/**
* @enum dvb_streams
* @brief Add support for MPEG-TS Stream types
* @ingroup dvb_table
*
* @var stream_reserved0
* @brief ITU-T | ISO/IEC Reserved
* @var stream_video
* @brief ISO/IEC 11172 Video
* @var stream_video_h262
* @brief ITU-T Rec. H.262 | ISO/IEC 13818-2 Video or ISO/IEC 11172-2 constrained parameter video stream
* @var stream_audio
* @brief ISO/IEC 11172 Audio
* @var stream_audio_13818_3
* @brief ISO/IEC 13818-3 Audio
* @var stream_private_sections
* @brief ITU-T Rec. H.222.0 | ISO/IEC 13818-1 private_sections
* @var stream_private_data
* @brief ITU-T Rec. H.222.0 | ISO/IEC 13818-1 PES packets containing private data
* @var stream_mheg
* @brief ISO/IEC 13522 MHEG
* @var stream_h222
* @brief ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Annex A DSM-CC
* @var stream_h222_1
* @brief ITU-T Rec. H.222.1
* @var stream_13818_6_A
* @brief ISO/IEC 13818-6 type A
* @var stream_13818_6_B
* @brief ISO/IEC 13818-6 type B
* @var stream_13818_6_C
* @brief ISO/IEC 13818-6 type C
* @var stream_13818_6_D
* @brief ISO/IEC 13818-6 type D
* @var stream_h222_aux
* @brief ITU-T Rec. H.222.0 | ISO/IEC 13818-1 auxiliary
* @var stream_audio_adts
* @brief ISO/IEC 13818-7 Audio with ADTS transport syntax
* @var stream_video_14496_2
* @brief ISO/IEC 14496-2 Visual
* @var stream_audio_latm
* @brief ISO/IEC 14496-3 Audio with the LATM transport syntax as defined in ISO/IEC 14496-3 / AMD 1
* @var stream_14496_1_pes
* @brief ISO/IEC 14496-1 SL-packetized stream or FlexMux stream carried in PES packets
* @var stream_14496_1_iso
* @brief ISO/IEC 14496-1 SL-packetized stream or FlexMux stream carried in ISO/IEC14496_sections.
* @var stream_download
* @brief ISO/IEC 13818-6 Synchronized Download Protocol
* @var stream_reserved
* @brief ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Reserved (from 0x15 to 0x7f)
* @var stream_private
* @brief User Private (from 0x80 to 0xff)
*/
enum dvb_streams {
stream_video = 0x01,
stream_video_h262 = 0x02,
stream_audio = 0x03,
stream_audio_13818_3 = 0x04,
stream_private_sections = 0x05,
stream_private_data = 0x06,
stream_mheg = 0x07,
stream_h222 = 0x08,
stream_h222_1 = 0x09,
stream_13818_6_A = 0x0A,
stream_13818_6_B = 0x0B,
stream_13818_6_C = 0x0C,
stream_13818_6_D = 0x0D,
stream_h222_aux = 0x0E,
stream_audio_adts = 0x0F,
stream_video_14496_2 = 0x10,
stream_audio_latm = 0x11,
stream_14496_1_pes = 0x12,
stream_14496_1_iso = 0x13,
stream_download = 0x14,
stream_video_h264 = 0x1b,
stream_audio_14496_3 = 0x1c,
stream_video_hevc = 0x24,
stream_video_cavs = 0x42,
stream_video_moto = 0x80,
stream_audio_a52 = 0x81,
stream_scte_27 = 0x82,
stream_audio_sdds = 0x84,
stream_audio_dts_hdmv = 0x85,
stream_audio_e_ac3 = 0x87,
stream_audio_dts = 0x8a,
stream_audio_a52_vls = 0x91,
stream_spu_vls = 0x92,
stream_audio_sdds2 = 0x94,
};
/**
* @brief Converts from enum dvb_streams into a string
* @ingroup dvb_table
*/
extern const char *pmt_stream_name[];
/**
* @struct dvb_table_pmt_stream
* @brief MPEG-TS PMT stream table
* @ingroup dvb_table
*
* @param type stream type
* @param elementary_pid elementary pid
* @param desc_length descriptor length
* @param zero zero
* @param descriptor pointer to struct dvb_desc
* @param next pointer to struct dvb_table_pmt_stream
*
* This structure is used to store the original PMT stream table,
* converting the integer fields to the CPU endianness.
*
* The undocumented parameters are used only internally by the API and/or
* are fields that are reserved. They shouldn't be used, as they may change
* on future API releases.
*
* Everything after dvb_table_pmt_stream::descriptor (including it) won't be
* bit-mapped to the data parsed from the MPEG TS. So, metadata are added there.
*/
struct dvb_table_pmt_stream {
uint8_t type;
union {
uint16_t bitfield;
struct {
uint16_t elementary_pid:13;
uint16_t reserved:3;
} __attribute__((packed));
} __attribute__((packed));
union {
uint16_t bitfield2;
struct {
uint16_t desc_length:10;
uint16_t zero:2;
uint16_t reserved2:4;
} __attribute__((packed));
} __attribute__((packed));
struct dvb_desc *descriptor;
struct dvb_table_pmt_stream *next;
} __attribute__((packed));
/**
* @struct dvb_table_pmt
* @brief MPEG-TS PMT table
* @ingroup dvb_table
*
* @param header struct dvb_table_header content
* @param pcr_pid PCR PID
* @param desc_length descriptor length
* @param descriptor pointer to struct dvb_desc
* @param stream pointer to struct dvb_table_pmt_stream
*
* This structure is used to store the original PMT stream table,
* converting the integer fields to the CPU endianness.
*
* The undocumented parameters are used only internally by the API and/or
* are fields that are reserved. They shouldn't be used, as they may change
* on future API releases.
*
* Everything after dvb_table_pmt::descriptor (including it) won't be
* bit-mapped to the data parsed from the MPEG TS. So, metadata are added there.
*/
struct dvb_table_pmt {
struct dvb_table_header header;
union {
uint16_t bitfield;
struct {
uint16_t pcr_pid:13;
uint16_t reserved2:3;
} __attribute__((packed));
} __attribute__((packed));
union {
uint16_t bitfield2;
struct {
uint16_t desc_length:10;
uint16_t zero3:2;
uint16_t reserved3:4;
} __attribute__((packed));
} __attribute__((packed));
struct dvb_desc *descriptor;
struct dvb_table_pmt_stream *stream;
} __attribute__((packed));
/** @brief First field at the struct */
#define dvb_pmt_field_first header
/** @brief First field that are not part of the received data */
#define dvb_pmt_field_last descriptor
/**
* @brief Macro used to find streams on a PMT table
* @ingroup dvb_table
*
* @param _stream stream to seek
* @param _pmt pointer to struct dvb_table_pmt_stream
*/
#define dvb_pmt_stream_foreach(_stream, _pmt) \
if (_pmt && _pmt->stream) \
for (struct dvb_table_pmt_stream *_stream = _pmt->stream; _stream; _stream = _stream->next) \
struct dvb_v5_fe_parms;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Initializes and parses PMT table
* @ingroup dvb_table
*
* @param parms struct dvb_v5_fe_parms pointer to the opened device
* @param buf buffer containing the PMT raw data
* @param buflen length of the buffer
* @param table pointer to struct dvb_table_pmt to be allocated and filled
*
* This function allocates a PMT table and fills the fields inside
* the struct. It also makes sure that all fields will follow the CPU
* endianness. Due to that, the content of the buffer may change.
*
* @return On success, it returns the size of the allocated struct.
* A negative value indicates an error.
*/
ssize_t dvb_table_pmt_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf,
ssize_t buflen, struct dvb_table_pmt **table);
/**
* @brief Frees all data allocated by the PMT table parser
* @ingroup dvb_table
*
* @param table pointer to struct dvb_table_pmt to be freed
*/
void dvb_table_pmt_free(struct dvb_table_pmt *table);
/**
* @brief Prints the content of the PAT table
* @ingroup dvb_table
*
* @param parms struct dvb_v5_fe_parms pointer to the opened device
* @param table pointer to struct dvb_table_pmt
*/
void dvb_table_pmt_print(struct dvb_v5_fe_parms *parms,
const struct dvb_table_pmt *table);
#ifdef __cplusplus
}
#endif
#endif
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