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/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef MPEG3DEMUX_H
#define MPEG3DEMUX_H
#include "mpeg3title.h"
#include <stdio.h>
typedef struct
{
struct mpeg3_rec* file;
/* Data consisting of the multiplexed packet */
unsigned char *raw_data;
long raw_offset;
int raw_size;
long packet_size;
/* Only one is on depending on which track owns the demultiplexer. */
int do_audio;
int do_video;
/* Data consisting of the elementary stream */
unsigned char *data_buffer;
long data_size;
long data_position;
long data_allocated;
/* Remember when the file descriptor is at the beginning of the packet just read. */
int reverse;
/* Set to 1 when eof or attempt to read before beginning */
int error_flag;
/* Temp variables for returning */
unsigned char next_char;
/* Correction factor for time discontinuity */
double time_offset;
int generating_timecode;
/* Titles */
mpeg3_title_t *titles[MPEG3_MAX_STREAMS];
int total_titles;
int current_title;
/* Tables of every stream ID encountered */
int astream_table[MPEG3_MAX_STREAMS]; /* macro of audio format if audio */
int vstream_table[MPEG3_MAX_STREAMS]; /* 1 if video */
/* Programs */
int total_programs;
int current_program;
/* Timecode in the current title */
int current_timecode;
/* Byte position in the current title */
long current_byte;
int transport_error_indicator;
int payload_unit_start_indicator;
int pid;
int transport_scrambling_control;
int adaptation_field_control;
int continuity_counter;
int is_padding;
int pid_table[MPEG3_PIDMAX];
int continuity_counters[MPEG3_PIDMAX];
int total_pids;
int adaptation_fields;
double time; /* Time in seconds */
int audio_pid;
int video_pid;
int astream; /* Video stream ID being decoded. -1 = select first ID in stream */
int vstream; /* Audio stream ID being decoded. -1 = select first ID in stream */
int aformat; /* format of the audio derived from multiplexing codes */
long program_association_tables;
int table_id;
int section_length;
int transport_stream_id;
long pes_packets;
double pes_audio_time; /* Presentation Time stamps */
double pes_video_time; /* Presentation Time stamps */
} mpeg3_demuxer_t;
/* ========================================================================= */
/* Entry points */
/* ========================================================================= */
#define mpeg3demux_error(demuxer) (((mpeg3_demuxer_t *)(demuxer))->error_flag)
#define mpeg3demux_time_offset(demuxer) (((mpeg3_demuxer_t *)(demuxer))->time_offset)
#define mpeg3demux_current_time(demuxer) (((mpeg3_demuxer_t *)(demuxer))->time + ((mpeg3_demuxer_t *)(demuxer))->time_offset)
#define mpeg3demux_read_char(demuxer) \
((((mpeg3_demuxer_t *)(demuxer))->data_position < ((mpeg3_demuxer_t *)(demuxer))->data_size) ? \
((mpeg3_demuxer_t *)(demuxer))->data_buffer[((mpeg3_demuxer_t *)(demuxer))->data_position++] : \
mpeg3demux_read_char_packet(demuxer))
#define mpeg3demux_read_prev_char(demuxer) \
((((mpeg3_demuxer_t *)(demuxer))->data_position != 0) ? \
((mpeg3_demuxer_t *)(demuxer))->data_buffer[((mpeg3_demuxer_t *)(demuxer))->data_position--] : \
mpeg3demux_read_prev_char_packet(demuxer))
#endif
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