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 __PSMUX_H__ 46 #define __PSMUX_H__ 47 48 #include <glib.h> 49 50 #include "psmuxcommon.h" 51 #include "psmuxstream.h" 52 53 G_BEGIN_DECLS 54 55 #define PSMUX_MAX_ES_INFO_LENGTH ((1 << 12) - 1) 56 57 typedef gboolean (*PsMuxWriteFunc) (guint8 *data, guint len, void *user_data); 58 59 struct PsMux { 60 GList *streams; /* PsMuxStream* array of all streams */ 61 guint nb_streams; 62 guint nb_private_streams; 63 PsMuxStreamIdInfo id_info; /* carrying the info which ids are used */ 64 65 /* timestamps: pts */ 66 GstClockTime pts; 67 68 guint32 pes_cnt; /* # of pes that has been created */ 69 guint16 pes_max_payload; /* maximum payload size in pes packets */ 70 71 guint64 bit_size; /* accumulated bit size of processed data */ 72 guint bit_rate; /* bit rate */ 73 GstClockTime bit_pts; /* last time the bit_rate is updated */ 74 75 guint pack_hdr_freq; /* PS pack header frequency */ 76 GstClockTime pack_hdr_pts; /* last time a pack header is written */ 77 78 guint sys_hdr_freq; /* system header frequency */ 79 GstClockTime sys_hdr_pts; /* last time a system header is written */ 80 81 guint psm_freq; /* program stream map frequency */ 82 GstClockTime psm_pts; /* last time a psm is written */ 83 84 guint8 packet_buf[PSMUX_MAX_PACKET_LEN]; 85 guint packet_bytes_written; /* # of bytes written in the buf */ 86 PsMuxWriteFunc write_func; 87 void *write_func_data; 88 89 /* Scratch space for writing ES_info descriptors */ 90 guint8 es_info_buf[PSMUX_MAX_ES_INFO_LENGTH]; 91 92 /* bounds in system header */ 93 guint8 audio_bound; 94 guint8 video_bound; 95 guint32 rate_bound; 96 97 /* stream headers */ 98 GstBuffer *sys_header; 99 GstBuffer *psm; 100 }; 101 102 /* create/free new muxer session */ 103 PsMux * psmux_new (void); 104 void psmux_free (PsMux *mux); 105 106 /* Setting muxing session properties */ 107 void psmux_set_write_func (PsMux *mux, PsMuxWriteFunc func, void *user_data); 108 109 /* stream management */ 110 PsMuxStream * psmux_create_stream (PsMux *mux, PsMuxStreamType stream_type); 111 112 /* writing stuff */ 113 gboolean psmux_write_stream_packet (PsMux *mux, PsMuxStream *stream); 114 gboolean psmux_write_end_code (PsMux *mux); 115 116 GList * psmux_get_stream_headers (PsMux *mux); 117 118 G_END_DECLS 119 120 #endif 121