1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* 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_COMMON_H__
#define __TSMUX_COMMON_H__
#include <glib.h>
#include <gst/gst.h>
G_BEGIN_DECLS
#define TSMUX_SYNC_BYTE 0x47
#define TSMUX_PACKET_LENGTH 188
#define TSMUX_HEADER_LENGTH 4
#define TSMUX_PAYLOAD_LENGTH (TSMUX_PACKET_LENGTH - TSMUX_HEADER_LENGTH)
#define TSMUX_MIN_ES_DESC_LEN 8
/* Frequency for PCR representation */
#define TSMUX_SYS_CLOCK_FREQ ((gint64) 27000000)
/* Frequency for PTS values */
#define TSMUX_CLOCK_FREQ (TSMUX_SYS_CLOCK_FREQ / 300)
#define TSMUX_PACKET_FLAG_NONE (0)
#define TSMUX_PACKET_FLAG_ADAPTATION (1 << 0)
#define TSMUX_PACKET_FLAG_DISCONT (1 << 1)
#define TSMUX_PACKET_FLAG_RANDOM_ACCESS (1 << 2)
#define TSMUX_PACKET_FLAG_PRIORITY (1 << 3)
#define TSMUX_PACKET_FLAG_WRITE_PCR (1 << 4)
#define TSMUX_PACKET_FLAG_WRITE_OPCR (1 << 5)
#define TSMUX_PACKET_FLAG_WRITE_SPLICE (1 << 6)
#define TSMUX_PACKET_FLAG_WRITE_ADAPT_EXT (1 << 7)
/* PES stream specific flags */
#define TSMUX_PACKET_FLAG_PES_FULL_HEADER (1 << 8)
#define TSMUX_PACKET_FLAG_PES_WRITE_PTS (1 << 9)
#define TSMUX_PACKET_FLAG_PES_WRITE_PTS_DTS (1 << 10)
#define TSMUX_PACKET_FLAG_PES_WRITE_ESCR (1 << 11)
#define TSMUX_PACKET_FLAG_PES_EXT_STREAMID (1 << 12)
#define TSMUX_PACKET_FLAG_PES_DATA_ALIGNMENT (1 << 13)
/* PAT interval (1/10th sec) */
#define TSMUX_DEFAULT_PAT_INTERVAL (TSMUX_CLOCK_FREQ / 10)
/* PMT interval (1/10th sec) */
#define TSMUX_DEFAULT_PMT_INTERVAL (TSMUX_CLOCK_FREQ / 10)
/* SI interval (1/10th sec) */
#define TSMUX_DEFAULT_SI_INTERVAL (TSMUX_CLOCK_FREQ / 10)
/* PCR interval (1/25th sec) */
#define TSMUX_DEFAULT_PCR_INTERVAL (TSMUX_CLOCK_FREQ / 25)
/* SCTE-35 NULL Interval (5mins) */
#define TSMUX_DEFAULT_SCTE_35_NULL_INTERVAL (TSMUX_CLOCK_FREQ * 300)
/* Bitrate (bits per second) */
#define TSMUX_DEFAULT_BITRATE 0
typedef struct TsMuxPacketInfo TsMuxPacketInfo;
typedef struct TsMuxProgram TsMuxProgram;
typedef struct TsMuxStream TsMuxStream;
struct TsMuxPacketInfo {
guint16 pid;
guint32 flags;
guint32 pes_header_length;
gboolean packet_start_unit_indicator;
/* payload bytes available
* (including PES header if applicable) */
guint stream_avail;
/* optional PCR */
guint64 pcr;
/* following not really actively used */
guint64 opcr;
guint8 splice_countdown;
guint8 private_data_len;
guint8 private_data[256];
};
static inline void
tsmux_put16 (guint8 **pos, guint16 val)
{
*(*pos)++ = (val >> 8) & 0xff;
*(*pos)++ = val & 0xff;
}
static inline void
tsmux_put32 (guint8 **pos, guint32 val)
{
*(*pos)++ = (val >> 24) & 0xff;
*(*pos)++ = (val >> 16) & 0xff;
*(*pos)++ = (val >> 8) & 0xff;
*(*pos)++ = val & 0xff;
}
static inline void
tsmux_put_ts (guint8 **pos, guint8 id, gint64 ts)
{
/* 1: 4 bit id value | TS [32..30] | marker_bit */
*(*pos)++ = ((id << 4) | ((ts >> 29) & 0x0E) | 0x01) & 0xff;
/* 2, 3: TS[29..15] | marker_bit */
tsmux_put16 (pos, ((ts >> 14) & 0xfffe) | 0x01);
/* 4, 5: TS[14..0] | marker_bit */
tsmux_put16 (pos, ((ts << 1) & 0xfffe) | 0x01);
}
GST_DEBUG_CATEGORY_EXTERN (gst_base_ts_mux_debug);
#define TS_DEBUG GST_DEBUG
G_END_DECLS
#endif
|
