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141 lines
7.3 KiB
C
141 lines
7.3 KiB
C
/*************************************************************************
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* Generating a MPEG/SYSTEMS *
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* MULTIPLEXED VIDEO/AUDIO STREAM *
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* from two MPEG source streams *
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* Christoph Moar *
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* SIEMENS CORPORATE RESEARCH AND DEVELOPMENT ST SN 11 / T SN 6 *
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* (C) 1994 1995 *
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**************************************************************************
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* Restrictions apply. Will not support the whole MPEG/SYSTEM Standard. *
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* Basically, will generate Constrained System Parameter Files. *
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* Mixes only one audio and/or one video stream. Might be expanded. *
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*************************************************************************/
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/*************************************************************************
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* mplex - MPEG/SYSTEMS multiplexer *
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* Copyright (C) 1994 1995 Christoph Moar *
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* Siemens ZFE ST SN 11 / T SN 6 *
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* *
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* moar@informatik.tu-muenchen.de *
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* (Christoph Moar) *
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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., 675 Mass Ave, Cambridge, MA 02139, USA. *
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*************************************************************************/
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#ifndef __MAIN_H__
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#define __MAIN_H__
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#include <glib.h>
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#define PACK_START 0x000001ba
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#define SYS_HEADER_START 0x000001bb
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#define ISO11172_END 0x000001b9
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#define PACKET_START 0x000001
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#define CLOCKS 90000.0 /* System Clock Hertz */
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#define AFTER_PACKET_LENGTH 15 /* No of non-data-bytes */
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/* following the packet */
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/* length field */
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#define LAST_SCR_BYTE_IN_PACK 9 /* No of bytes in pack */
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/* preceding, and */
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/* including, the SCR */
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/* The following values for sys_header_length & size are only valid for */
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/* System streams consisting of two basic streams. When wrapping around */
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/* the system layer on a single video or a single audio stream, those */
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/* values get decreased by 3. */
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#define SYS_HEADER_LENGTH 12 /* length of Sys Header */
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/* after start code and */
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/* length field */
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#define SYS_HEADER_SIZE 18 /* incl. start code and */
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/* length field */
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#define PACK_HEADER_SIZE 12
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#define PACKET_HEADER_SIZE 6
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#define MAX_SECTOR_SIZE 0x20000 /* Max Sektor Groesse */
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#define STREAMS_VIDEO 1
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#define STREAMS_AUDIO 2
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#define STREAMS_BOTH 3
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#define AUDIO_STREAMS 0xb8 /* Marker Audio Streams */
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#define VIDEO_STREAMS 0xb9 /* Marker Video Streams */
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#define AUDIO_STR_0 0xc0 /* Marker Audio Stream0 */
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#define VIDEO_STR_0 0xe0 /* Marker Video Stream0 */
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#define PADDING_STR 0xbe /* Marker Padding Stream*/
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#define ZERO_STUFFING_BYTE 0
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#define STUFFING_BYTE 0xff
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#define RESERVED_BYTE 0xff
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#define TIMESTAMPS_NO 0 /* Flag NO timestamps */
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#define TIMESTAMPS_PTS 1 /* Flag PTS timestamp */
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#define TIMESTAMPS_PTS_DTS 2 /* Flag BOTH timestamps */
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#define MARKER_SCR 2 /* Marker SCR */
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#define MARKER_JUST_PTS 2 /* Marker only PTS */
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#define MARKER_PTS 3 /* Marker PTS */
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#define MARKER_DTS 1 /* Marker DTS */
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#define MARKER_NO_TIMESTAMPS 0x0f /* Marker NO timestamps */
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#define STATUS_AUDIO_END 0 /* Statusmessage A end */
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#define STATUS_VIDEO_END 1 /* Statusmessage V end */
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#define STATUS_AUDIO_TIME_OUT 2 /* Statusmessage A out */
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#define STATUS_VIDEO_TIME_OUT 3 /* Statusmessage V out */
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/*************************************************************************
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Typ- und Strukturdefinitionen
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*************************************************************************/
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typedef struct sector_struc /* A sector, can contain pack, sys header */
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/* and packet. */
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{ unsigned char buf [MAX_SECTOR_SIZE] ;
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unsigned int length_of_sector ;
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unsigned int length_of_packet_data ;
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guint64 TS ;
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} Sector_struc;
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typedef struct pack_struc /* Pack Info */
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{ unsigned char buf [PACK_HEADER_SIZE];
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guint64 SCR;
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} Pack_struc;
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typedef struct sys_header_struc /* System Header Info */
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{ unsigned char buf [SYS_HEADER_SIZE];
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} Sys_header_struc;
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/*************************************************************************
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Funktionsprototypen, keine Argumente, K&R Style
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*************************************************************************/
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/* systems.c */
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void create_sector (Sector_struc *sector, Pack_struc *pack, Sys_header_struc *sys_header,
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unsigned int packet_size, unsigned char *inputbuffer, unsigned char type, unsigned char buffer_scale,
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unsigned int buffer_size, unsigned char buffers, guint64 PTS, guint64 DTS,
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unsigned char timestamps, unsigned int which_streams);
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void create_pack (Pack_struc *pack, guint64 SCR, unsigned int mux_rate);
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void create_sys_header (Sys_header_struc *sys_header, unsigned int rate_bound, unsigned char audio_bound,
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unsigned char fixed, unsigned char CSPS, unsigned char audio_lock, unsigned char video_lock,
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unsigned char video_bound, unsigned char stream1, unsigned char buffer1_scale, unsigned int buffer1_size,
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unsigned char stream2, unsigned char buffer2_scale, unsigned int buffer2_size, unsigned int which_streams);
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#endif
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