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2acaa3940a
This is more appropriate. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1510>
244 lines
8.3 KiB
C
244 lines
8.3 KiB
C
/*
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* Copyright 2006 BBC and Fluendo S.A.
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*
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* This library is licensed under 3 different licenses and you
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* can choose to use it under the terms of any one of them. The
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* three licenses are the MPL 1.1, the LGPL, and the MIT license.
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*
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* MPL:
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/.
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* LGPL:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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* MIT:
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*
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* Unless otherwise indicated, Source Code is licensed under MIT license.
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* See further explanation attached in License Statement (distributed in the file
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* LICENSE).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* SPDX-License-Identifier: MPL-1.1 OR MIT OR LGPL-2.0-or-later
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*/
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#ifndef __TSMUX_H__
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#define __TSMUX_H__
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#include <glib.h>
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#include <gst/mpegts/mpegts.h>
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#include "tsmuxcommon.h"
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#include "tsmuxstream.h"
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G_BEGIN_DECLS
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#define TSMUX_MAX_ES_INFO_LENGTH ((1 << 12) - 1)
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#define TSMUX_PID_AUTO ((guint16)-1)
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#define TSMUX_START_PROGRAM_ID 0x0001
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#define TSMUX_START_PMT_PID 0x0020
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#define TSMUX_START_ES_PID 0x0040
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typedef struct TsMuxSection TsMuxSection;
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typedef struct TsMux TsMux;
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typedef gboolean (*TsMuxWriteFunc) (GstBuffer * buf, void *user_data, gint64 new_pcr);
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typedef void (*TsMuxAllocFunc) (GstBuffer ** buf, void *user_data);
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typedef TsMuxStream * (*TsMuxNewStreamFunc) (guint16 new_pid, guint stream_type, void *user_data);
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struct TsMuxSection {
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TsMuxPacketInfo pi;
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GstMpegtsSection *section;
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};
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/* Information for the streams associated with one program */
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struct TsMuxProgram {
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/* TRUE if the SI has been written at least once */
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gboolean wrote_si;
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TsMuxSection pmt;
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/* PMT version */
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guint8 pmt_version;
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/* trigger for writing PMT */
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gboolean pmt_changed;
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/* interval between PMT in MPEG PTS clock time */
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guint pmt_interval;
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/* Next PMT position, 27 MHz */
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gint64 next_pmt_pcr;
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/* program ID for the PAT */
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guint16 pgm_number;
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/* PID to write the PMT */
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guint16 pmt_pid;
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TsMuxSection *scte35_null_section;
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/* SCTE-35 pid (0 if inactive/unused) */
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guint16 scte35_pid;
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/* Interval between SCTE-35 NULL packets in MPEG PTS clock time */
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guint scte35_null_interval;
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/* Next SCTE-35 position, 27 MHz */
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gint64 next_scte35_pcr;
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/* stream which carries the PCR */
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TsMuxStream *pcr_stream;
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/* programs TsMuxStream's */
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GPtrArray *streams;
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};
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struct TsMux {
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/* TsMuxStream* array of all streams */
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guint nb_streams;
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GList *streams;
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/* TsMuxProgram* array of all programs */
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guint nb_programs;
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GList *programs;
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/* next auto-generated misc id */
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guint16 next_pgm_no;
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guint16 next_pmt_pid;
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guint16 next_stream_pid;
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/* Table with TsMuxSection to write */
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GHashTable *si_sections;
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TsMuxSection pat;
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/* PAT transport_stream_id */
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guint16 transport_id;
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/* PAT version */
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guint8 pat_version;
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/* trigger writing PAT */
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gboolean pat_changed;
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/* interval between PAT in MPEG PTS clock time */
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guint pat_interval;
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/* Next PAT position, 27 MHz */
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gint64 next_pat_pcr;
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/* interval between PCR in MPEG PTS clock time */
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guint pcr_interval;
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/* trigger writing Service Information Tables */
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gboolean si_changed;
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/* interval between SIT in MPEG PTS clock time */
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guint si_interval;
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/* Next SIT position, 27 MHz */
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gint64 next_si_pcr;
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/* callback to write finished packet */
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TsMuxWriteFunc write_func;
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void *write_func_data;
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/* callback to alloc new packet buffer */
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TsMuxAllocFunc alloc_func;
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void *alloc_func_data;
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/* callback to create a new stream */
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TsMuxNewStreamFunc new_stream_func;
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void *new_stream_data;
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/* scratch space for writing ES_info descriptors */
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guint8 es_info_buf[TSMUX_MAX_ES_INFO_LENGTH];
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guint64 bitrate;
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guint64 n_bytes;
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/* For the per-PID continuity counter */
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guint8 pid_packet_counts[8192];
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gint64 first_pcr_ts;
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};
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/* create/free new muxer session */
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TsMux * tsmux_new (void);
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void tsmux_free (TsMux *mux);
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/* Setting muxing session properties */
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void tsmux_set_write_func (TsMux *mux, TsMuxWriteFunc func, void *user_data);
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void tsmux_set_alloc_func (TsMux *mux, TsMuxAllocFunc func, void *user_data);
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void tsmux_set_new_stream_func (TsMux * mux, TsMuxNewStreamFunc func, void *user_data);
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void tsmux_set_pat_interval (TsMux *mux, guint interval);
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guint tsmux_get_pat_interval (TsMux *mux);
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void tsmux_resend_pat (TsMux *mux);
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guint16 tsmux_get_new_pid (TsMux *mux);
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void tsmux_set_bitrate (TsMux *mux, guint64 bitrate);
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/* pid/program management */
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TsMuxProgram * tsmux_program_new (TsMux *mux, gint prog_id);
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void tsmux_program_free (TsMuxProgram *program);
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void tsmux_program_set_pmt_pid (TsMuxProgram *program, guint16 pmt_pid);
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void tsmux_set_pmt_interval (TsMuxProgram *program, guint interval);
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guint tsmux_get_pmt_interval (TsMuxProgram *program);
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void tsmux_resend_pmt (TsMuxProgram *program);
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void tsmux_program_set_scte35_pid (TsMuxProgram *program, guint16 pid);
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guint16 tsmux_program_get_scte35_pid (TsMuxProgram *program);
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void tsmux_program_set_scte35_interval (TsMuxProgram *mux, guint interval);
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gboolean tsmux_program_delete (TsMux *mux, TsMuxProgram *program);
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/* SI table management */
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void tsmux_set_si_interval (TsMux *mux, guint interval);
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guint tsmux_get_si_interval (TsMux *mux);
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void tsmux_resend_si (TsMux *mux);
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gboolean tsmux_add_mpegts_si_section (TsMux * mux, GstMpegtsSection * section);
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/* One-time sections */
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gboolean tsmux_send_section (TsMux *mux, GstMpegtsSection *section);
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/* stream management */
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TsMuxStream * tsmux_create_stream (TsMux *mux, guint stream_type, guint16 pid, gchar *language);
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TsMuxStream * tsmux_find_stream (TsMux *mux, guint16 pid);
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gboolean tsmux_remove_stream (TsMux *mux, guint16 pid, TsMuxProgram *program);
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void tsmux_program_add_stream (TsMuxProgram *program, TsMuxStream *stream);
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void tsmux_program_set_pcr_stream (TsMuxProgram *program, TsMuxStream *stream);
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void tsmux_set_pcr_interval (TsMux * mux, guint freq);
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/* writing stuff */
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gboolean tsmux_write_stream_packet (TsMux *mux, TsMuxStream *stream);
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G_END_DECLS
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#endif
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