1 /* MPEG-PS muxer plugin for GStreamer
2 * Copyright 2008 Lin YANG <oxcsnicho@gmail.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19 /*
20 * Unless otherwise indicated, Source Code is licensed under MIT license.
21 * See further explanation attached in License Statement (distributed in the file
22 * LICENSE).
23 *
24 * Permission is hereby granted, free of charge, to any person obtaining a copy of
25 * this software and associated documentation files (the "Software"), to deal in
26 * the Software without restriction, including without limitation the rights to
27 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
28 * of the Software, and to permit persons to whom the Software is furnished to do
29 * so, subject to the following conditions:
30 *
31 * The above copyright notice and this permission notice shall be included in all
32 * copies or substantial portions of the Software.
33 *
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
37 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
40 * SOFTWARE.
41 */
42
43
44
45 #ifndef __PSMUXSTREAM_H__
46 #define __PSMUXSTREAM_H__
47
48 #include <gst/gst.h>
49
50 #include "psmuxcommon.h"
51
52 G_BEGIN_DECLS
53
54
55 typedef void (*PsMuxStreamBufferReleaseFunc) (guint8 *data, void *user_data);
56
57 enum PsMuxStreamType { /* Table 2-29 in spec */
58 PSMUX_ST_RESERVED = 0x00,
59 PSMUX_ST_VIDEO_MPEG1 = 0x01,
60 PSMUX_ST_VIDEO_MPEG2 = 0x02,
61 PSMUX_ST_AUDIO_MPEG1 = 0x03,
62 PSMUX_ST_AUDIO_MPEG2 = 0x04,
63 PSMUX_ST_PRIVATE_SECTIONS = 0x05,
64 PSMUX_ST_PRIVATE_DATA = 0x06,
65 PSMUX_ST_MHEG = 0x07,
66 PSMUX_ST_DSMCC = 0x08,
67 PSMUX_ST_H222_1 = 0x09,
68
69 /* later extensions */
70 PSMUX_ST_AUDIO_AAC = 0x0f,
71 PSMUX_ST_VIDEO_MPEG4 = 0x10,
72 PSMUX_ST_VIDEO_H264 = 0x1b,
73
74 /* private stream types */
75 PSMUX_ST_PS_AUDIO_AC3 = 0x81,
76 PSMUX_ST_PS_AUDIO_DTS = 0x8a,
77 PSMUX_ST_PS_AUDIO_LPCM = 0x8b,
78 PSMUX_ST_PS_DVD_SUBPICTURE = 0xff,
79
80 /* Non-standard definitions */
81 PSMUX_ST_VIDEO_DIRAC = 0xD1
82 };
83
84 struct PsMuxStreamBuffer
85 {
86 gboolean keyunit;
87
88 /* PTS & DTS associated with the contents of this buffer */
89 GstClockTime pts;
90 GstClockTime dts;
91
92 GstBuffer *buf;
93 GstMapInfo map;
94 };
95
96 /* PsMuxStream receives elementary streams for parsing.
97 * Via the write_bytes() method, it can output a PES stream piecemeal */
98 struct PsMuxStream{
99 PsMuxPacketInfo pi;
100
101 PsMuxStreamType stream_type;
102 guint8 stream_id;
103 guint8 stream_id_ext; /* extended stream id (13818-1 Amdt 2) */
104
105 /* List of data buffers available for writing out */
106 GList *buffers;
107 guint32 bytes_avail;
108
109 /* Current data buffer being consumed */
110 PsMuxStreamBuffer *cur_buffer;
111 guint32 cur_buffer_consumed;
112
113 /* PES payload */
114 guint16 cur_pes_payload_size;
115 guint16 pes_bytes_written; /* delete*/
116
117 /* PTS/DTS to write if the flags in the packet info are set */
118 gint64 pts; /* TODO: cur_buffer->pts?*/
119 gint64 dts; /* TODO: cur_buffer->dts?*/
120 gint64 last_pts;
121
122 /* stream type */
123 gboolean is_video_stream;
124 gboolean is_audio_stream;
125
126 /* for writing descriptors */
127 gint audio_sampling;
128 gint audio_channels;
129 gint audio_bitrate;
130
131 /* for writing buffer size in system header */
132 guint max_buffer_size;
133 };
134
135 /* stream management */
136 PsMuxStream* psmux_stream_new (PsMux * mux, PsMuxStreamType stream_type);
137 void psmux_stream_free (PsMuxStream *stream);
138
139 /* Add a new buffer to the pool of available bytes. If pts or dts are not -1, they
140 * indicate the PTS or DTS of the first access unit within this packet */
141 void psmux_stream_add_data (PsMuxStream *stream,
142 GstBuffer * buffer,
143 gint64 pts, gint64 dts,
144 gboolean keyunit);
145
146 /* total bytes in buffer */
147 gint psmux_stream_bytes_in_buffer (PsMuxStream *stream);
148 /* number of bytes of raw data available for writing */
149 gint psmux_stream_bytes_avail (PsMuxStream *stream);
150
151 /* write PES data */
152 guint psmux_stream_get_data (PsMuxStream *stream, guint8 *buf, guint len);
153
154 /* write corresponding descriptors of the stream */
155 void psmux_stream_get_es_descrs (PsMuxStream *stream, guint8 *buf, guint16 *len);
156
157 /* get the pts of stream */
158 guint64 psmux_stream_get_pts (PsMuxStream *stream);
159
160 /* stream_id assignemnt */
161 #define PSMUX_STREAM_ID_MPGA_INIT 0xc0
162 #define PSMUX_STREAM_ID_MPGA_MAX 0xcf
163
164 #define PSMUX_STREAM_ID_MPGV_INIT 0xe0
165 #define PSMUX_STREAM_ID_MPGV_MAX 0xef
166
167 #define PSMUX_STREAM_ID_AC3_INIT 0x80
168 #define PSMUX_STREAM_ID_AC3_MAX 0x87
169
170 #define PSMUX_STREAM_ID_SPU_INIT 0x20
171 #define PSMUX_STREAM_ID_SPU_MAX 0x3f
172
173 #define PSMUX_STREAM_ID_DTS_INIT 0x88
174 #define PSMUX_STREAM_ID_DTS_MAX 0x8f
175
176 #define PSMUX_STREAM_ID_LPCM_INIT 0xa0
177 #define PSMUX_STREAM_ID_LPCM_MAX 0xaf
178
179 #define PSMUX_STREAM_ID_DIRAC_INIT 0x60
180 #define PSMUX_STREAM_ID_DIRAC_MAX 0x6f
181
182 struct PsMuxStreamIdInfo {
183 guint8 id_mpga;
184 guint8 id_mpgv;
185 guint8 id_ac3;
186 guint8 id_spu;
187 guint8 id_dts;
188 guint8 id_lpcm;
189 guint8 id_dirac;
190 };
191
192 static inline void
psmux_stream_id_info_init(PsMuxStreamIdInfo * info)193 psmux_stream_id_info_init (PsMuxStreamIdInfo * info)
194 {
195 g_return_if_fail (info != NULL);
196 info->id_mpga = PSMUX_STREAM_ID_MPGA_INIT;
197 info->id_mpgv = PSMUX_STREAM_ID_MPGV_INIT;
198 info->id_ac3 = PSMUX_STREAM_ID_AC3_INIT;
199 info->id_spu = PSMUX_STREAM_ID_SPU_INIT;
200 info->id_dts = PSMUX_STREAM_ID_DTS_INIT;
201 info->id_lpcm = PSMUX_STREAM_ID_LPCM_INIT;
202 info->id_dirac= PSMUX_STREAM_ID_DIRAC_INIT;
203 }
204
205 G_END_DECLS
206
207 #endif
208