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/*
* Copyright 2006 BBC and Fluendo S.A.
*
* This library is licensed under 3 different licenses and you
* can choose to use it under the terms of any one of them. The
* three licenses are the MPL 1.1, the LGPL, and the MIT license.
*
* MPL:
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* LGPL:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* MIT:
*
* Unless otherwise indicated, Source Code is licensed under MIT license.
* See further explanation attached in License Statement (distributed in the file
* LICENSE).
*
* 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.
*
* SPDX-License-Identifier: MPL-1.1 OR MIT OR LGPL-2.0-or-later
*/
#ifndef __TSMUX_H__
#define __TSMUX_H__
#include <glib.h>
#include <gst/mpegts/mpegts.h>
#include "tsmuxcommon.h"
#include "tsmuxstream.h"
G_BEGIN_DECLS
#define TSMUX_MAX_ES_INFO_LENGTH ((1 << 12) - 1)
#define TSMUX_PID_AUTO ((guint16)-1)
#define TSMUX_START_PROGRAM_ID 0x0001
#define TSMUX_START_PMT_PID 0x0020
#define TSMUX_START_ES_PID 0x0040
typedef struct TsMuxSection TsMuxSection;
typedef struct TsMux TsMux;
typedef gboolean (*TsMuxWriteFunc) (GstBuffer * buf, void *user_data, gint64 new_pcr);
typedef void (*TsMuxAllocFunc) (GstBuffer ** buf, void *user_data);
typedef TsMuxStream * (*TsMuxNewStreamFunc) (guint16 new_pid, guint stream_type, void *user_data);
struct TsMuxSection {
TsMuxPacketInfo pi;
GstMpegtsSection *section;
};
/* Information for the streams associated with one program */
struct TsMuxProgram {
/* TRUE if the SI has been written at least once */
gboolean wrote_si;
TsMuxSection pmt;
/* PMT version */
guint8 pmt_version;
/* trigger for writing PMT */
gboolean pmt_changed;
/* interval between PMT in MPEG PTS clock time */
guint pmt_interval;
/* Next PMT position, 27 MHz */
gint64 next_pmt_pcr;
/* program ID for the PAT */
guint16 pgm_number;
/* PID to write the PMT */
guint16 pmt_pid;
TsMuxSection *scte35_null_section;
/* SCTE-35 pid (0 if inactive/unused) */
guint16 scte35_pid;
/* Interval between SCTE-35 NULL packets in MPEG PTS clock time */
guint scte35_null_interval;
/* Next SCTE-35 position, 27 MHz */
gint64 next_scte35_pcr;
/* stream which carries the PCR */
TsMuxStream *pcr_stream;
/* programs TsMuxStream's */
GArray *streams;
};
struct TsMux {
/* TsMuxStream* array of all streams */
guint nb_streams;
GList *streams;
/* TsMuxProgram* array of all programs */
guint nb_programs;
GList *programs;
/* next auto-generated misc id */
guint16 next_pgm_no;
guint16 next_pmt_pid;
guint16 next_stream_pid;
/* Table with TsMuxSection to write */
GHashTable *si_sections;
TsMuxSection pat;
/* PAT transport_stream_id */
guint16 transport_id;
/* PAT version */
guint8 pat_version;
/* trigger writing PAT */
gboolean pat_changed;
/* interval between PAT in MPEG PTS clock time */
guint pat_interval;
/* Next PAT position, 27 MHz */
gint64 next_pat_pcr;
/* interval between PCR in MPEG PTS clock time */
guint pcr_interval;
/* trigger writing Service Information Tables */
gboolean si_changed;
/* interval between SIT in MPEG PTS clock time */
guint si_interval;
/* Next SIT position, 27 MHz */
gint64 next_si_pcr;
/* callback to write finished packet */
TsMuxWriteFunc write_func;
void *write_func_data;
/* callback to alloc new packet buffer */
TsMuxAllocFunc alloc_func;
void *alloc_func_data;
/* callback to create a new stream */
TsMuxNewStreamFunc new_stream_func;
void *new_stream_data;
/* scratch space for writing ES_info descriptors */
guint8 es_info_buf[TSMUX_MAX_ES_INFO_LENGTH];
guint64 bitrate;
guint64 n_bytes;
/* For the per-PID continuity counter */
guint8 pid_packet_counts[8192];
gint64 first_pcr_ts;
};
/* create/free new muxer session */
TsMux * tsmux_new (void);
void tsmux_free (TsMux *mux);
/* Setting muxing session properties */
void tsmux_set_write_func (TsMux *mux, TsMuxWriteFunc func, void *user_data);
void tsmux_set_alloc_func (TsMux *mux, TsMuxAllocFunc func, void *user_data);
void tsmux_set_new_stream_func (TsMux * mux, TsMuxNewStreamFunc func, void *user_data);
void tsmux_set_pat_interval (TsMux *mux, guint interval);
guint tsmux_get_pat_interval (TsMux *mux);
void tsmux_resend_pat (TsMux *mux);
guint16 tsmux_get_new_pid (TsMux *mux);
void tsmux_set_bitrate (TsMux *mux, guint64 bitrate);
/* pid/program management */
TsMuxProgram * tsmux_program_new (TsMux *mux, gint prog_id);
void tsmux_program_free (TsMuxProgram *program);
void tsmux_program_set_pmt_pid (TsMuxProgram *program, guint16 pmt_pid);
void tsmux_set_pmt_interval (TsMuxProgram *program, guint interval);
guint tsmux_get_pmt_interval (TsMuxProgram *program);
void tsmux_resend_pmt (TsMuxProgram *program);
void tsmux_program_set_scte35_pid (TsMuxProgram *program, guint16 pid);
guint16 tsmux_program_get_scte35_pid (TsMuxProgram *program);
void tsmux_program_set_scte35_interval (TsMuxProgram *mux, guint interval);
gboolean tsmux_program_delete (TsMux *mux, TsMuxProgram *program);
/* SI table management */
void tsmux_set_si_interval (TsMux *mux, guint interval);
guint tsmux_get_si_interval (TsMux *mux);
void tsmux_resend_si (TsMux *mux);
gboolean tsmux_add_mpegts_si_section (TsMux * mux, GstMpegtsSection * section);
/* One-time sections */
gboolean tsmux_send_section (TsMux *mux, GstMpegtsSection *section);
/* stream management */
TsMuxStream * tsmux_create_stream (TsMux *mux, guint stream_type, guint16 pid, gchar *language);
TsMuxStream * tsmux_find_stream (TsMux *mux, guint16 pid);
gboolean tsmux_remove_stream (TsMux *mux, guint16 pid, TsMuxProgram *program);
void tsmux_program_add_stream (TsMuxProgram *program, TsMuxStream *stream);
void tsmux_program_set_pcr_stream (TsMuxProgram *program, TsMuxStream *stream);
void tsmux_set_pcr_interval (TsMux * mux, guint freq);
/* writing stuff */
gboolean tsmux_write_stream_packet (TsMux *mux, TsMuxStream *stream);
G_END_DECLS
#endif
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