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93a8137be6
The muxer is now able to include DVB sections in the transport stream.
The si-interval property will determine how often the SI tables are
muxed into the stream.
The section is handled by the mpeg-ts library. Below is a small example
that will include a Netork Information Table with a Network Name
descriptor in the stream.
GstMpegTsNIT *nit;
GstMpegTsDescriptor *descriptor;
GstMpegTsSection *section;
GstElement *mpegtsmux;
gst_mpegts_initialize ();
nit = gst_mpegts_section_nit_new ();
nit->actual_network = TRUE;
descriptor = gst_mpegts_descriptor_from_dvb_network_name ("Network name");
g_ptr_array_add (nit->descriptors, descriptor);
section = gst_mpegts_section_from_nit (nit);
// mpegtsmux should be retrieved from the pipeline
gst_mpegts_section_send_event (section, mpegtsmux);
gst_mpegts_section_unref (section);
188 lines
6.3 KiB
C
188 lines
6.3 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 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_COMMON_H__
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#define __TSMUX_COMMON_H__
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#include <glib.h>
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define TSMUX_SYNC_BYTE 0x47
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#define TSMUX_PACKET_LENGTH 188
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#define TSMUX_HEADER_LENGTH 4
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#define TSMUX_PAYLOAD_LENGTH (TSMUX_PACKET_LENGTH - TSMUX_HEADER_LENGTH)
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#define TSMUX_MIN_ES_DESC_LEN 8
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/* Frequency for PCR representation */
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#define TSMUX_SYS_CLOCK_FREQ ((gint64) 27000000)
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/* Frequency for PTS values */
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#define TSMUX_CLOCK_FREQ (TSMUX_SYS_CLOCK_FREQ / 300)
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#define TSMUX_PACKET_FLAG_NONE (0)
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#define TSMUX_PACKET_FLAG_ADAPTATION (1 << 0)
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#define TSMUX_PACKET_FLAG_DISCONT (1 << 1)
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#define TSMUX_PACKET_FLAG_RANDOM_ACCESS (1 << 2)
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#define TSMUX_PACKET_FLAG_PRIORITY (1 << 3)
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#define TSMUX_PACKET_FLAG_WRITE_PCR (1 << 4)
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#define TSMUX_PACKET_FLAG_WRITE_OPCR (1 << 5)
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#define TSMUX_PACKET_FLAG_WRITE_SPLICE (1 << 6)
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#define TSMUX_PACKET_FLAG_WRITE_ADAPT_EXT (1 << 7)
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/* PES stream specific flags */
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#define TSMUX_PACKET_FLAG_PES_FULL_HEADER (1 << 8)
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#define TSMUX_PACKET_FLAG_PES_WRITE_PTS (1 << 9)
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#define TSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS (1 << 10)
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#define TSMUX_PACKET_FLAG_PES_WRITE_ESCR (1 << 11)
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#define TSMUX_PACKET_FLAG_PES_EXT_STREAMID (1 << 12)
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#define TSMUX_PACKET_FLAG_PES_DATA_ALIGNMENT (1 << 13)
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/* PAT interval (1/10th sec) */
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#define TSMUX_DEFAULT_PAT_INTERVAL (TSMUX_CLOCK_FREQ / 10)
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/* PMT interval (1/10th sec) */
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#define TSMUX_DEFAULT_PMT_INTERVAL (TSMUX_CLOCK_FREQ / 10)
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/* SI interval (1/10th sec) */
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#define TSMUX_DEFAULT_SI_INTERVAL (TSMUX_CLOCK_FREQ / 10)
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typedef struct TsMuxPacketInfo TsMuxPacketInfo;
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typedef struct TsMuxProgram TsMuxProgram;
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typedef struct TsMuxStream TsMuxStream;
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struct TsMuxPacketInfo {
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guint16 pid;
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guint32 flags;
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guint32 pes_header_length;
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gboolean packet_start_unit_indicator;
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/* continuity counter */
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guint8 packet_count;
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/* payload bytes available
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* (including PES header if applicable) */
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guint stream_avail;
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/* optional PCR */
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guint64 pcr;
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/* following not really actively used */
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guint64 opcr;
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guint8 splice_countdown;
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guint8 private_data_len;
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guint8 private_data[256];
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};
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static inline void
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tsmux_put16 (guint8 **pos, guint16 val)
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{
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*(*pos)++ = (val >> 8) & 0xff;
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*(*pos)++ = val & 0xff;
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}
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static inline void
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tsmux_put32 (guint8 **pos, guint32 val)
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{
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*(*pos)++ = (val >> 24) & 0xff;
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*(*pos)++ = (val >> 16) & 0xff;
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*(*pos)++ = (val >> 8) & 0xff;
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*(*pos)++ = val & 0xff;
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}
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static inline void
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tsmux_put_ts (guint8 **pos, guint8 id, gint64 ts)
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{
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/* 1: 4 bit id value | TS [32..30] | marker_bit */
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*(*pos)++ = ((id << 4) | ((ts >> 29) & 0x0E) | 0x01) & 0xff;
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/* 2, 3: TS[29..15] | marker_bit */
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tsmux_put16 (pos, ((ts >> 14) & 0xfffe) | 0x01);
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/* 4, 5: TS[14..0] | marker_bit */
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tsmux_put16 (pos, ((ts << 1) & 0xfffe) | 0x01);
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}
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GST_DEBUG_CATEGORY_EXTERN (mpegtsmux_debug);
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#define TS_DEBUG GST_DEBUG
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G_END_DECLS
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#endif
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