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fecd38c8f6
Until now, any streams in tsmux had to be present when the element started its first buffer. Now they can appear at any point during the stream, or even disappear and reappear later using the same PID.
254 lines
8.8 KiB
C
254 lines
8.8 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 4 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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* four licenses are the MPL 1.1, the LGPL, the GPL and the MIT
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* 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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* GPL:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, 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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*/
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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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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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GArray *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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};
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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_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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