/* * 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 #include #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