/* *
 *  $Id$
 *
 *  This file is part of Fenice
 *
 *  Fenice -- Open Media Server
 *
 *  Copyright (C) 2004 by
 *
 *	- Giampaolo Mancini	<giampaolo.mancini@polito.it>
 *	- Francesco Varano	<francesco.varano@polito.it>
 *	- Marco Penno		<marco.penno@polito.it>
 *	- Federico Ridolfo	<federico.ridolfo@polito.it>
 *	- Eugenio Menegatti 	<m.eu@libero.it>
 *	- Stefano Cau
 *	- Giuliano Emma
 *	- Stefano Oldrini
 *
 *  Fenice is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Fenice 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Fenice; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * */

/*
 * header file for MPEG1-2 video elementary stream
 */

#ifndef _MPEGH
#define _MPEGH

#include "mediainfo.h"
#include "types.h"

typedef struct {		/* MPEG video specific headers */
    unsigned int ffc: 3;
    unsigned int ffv: 1;
    unsigned int bfc: 3;	/* |MBZ:5|T:1|TR:10|AN:1|N:1|S:1|B:1|E:1|P:3|FBV:1|BFC:3|FFV:1|FFC:3| */
    unsigned int fbv: 1;
    unsigned int p: 3;
    unsigned int e: 1;
    unsigned int b: 1;
    unsigned int s: 1;
    unsigned int n: 1;
    unsigned int an: 1;
    unsigned int tr: 10;
    unsigned int t: 1;
    unsigned int mbz: 5;
} video_spec_head1;

typedef struct {
    unsigned int d: 1;	/* |X:1|E:1|F[0,0]:4|F[0,1]:4|F[1,0]:4|F[1,1]:4|DC:2|PS:2|T:1|P:1|C:1|Q:1|V:1|A:1|R:1|H:1|G:1|D:1| */
    unsigned int g: 1;
    unsigned int h: 1;
    unsigned int r: 1;
    unsigned int a: 1;
    unsigned int v: 1;
    unsigned int q: 1;
    unsigned int c: 1;
    unsigned int p: 1;
    unsigned int t: 1;
    unsigned int ps: 2;
    unsigned int dc: 2;
    unsigned int f11: 4;
    unsigned int f10: 4;
    unsigned int f01: 4;
    unsigned int f00: 4;
    unsigned int e: 1;
    unsigned int x: 1;
} video_spec_head2;


typedef enum { MPEG_1, MPEG_2, TO_PROBE } standard;

typedef struct {
    video_spec_head1 vsh1;
    video_spec_head2 vsh2;
    unsigned char final_byte;
    char temp_ref;
    char hours;
    char minutes;
    char seconds;
    char picture;
    unsigned long data_total;
    standard std;
    int fragmented;
    video_spec_head1 vsh1_aux;	/* without modifying other variables */
    video_spec_head2 vsh2_aux;
} static_MPEG_video;

/* reads sequence header */
int read_seq_head(media_entry *me, uint8 *, uint32 *, int fin,
                  unsigned char *final_byte, standard std);
/* reads GOP header */
int read_gop_head(uint8 *, uint32 *, int fin, unsigned char *final_byte,
                  char *hours, char *minutes, char *seconds, char *picture,
                  standard std);
/* reads picture head */
int read_picture_head(uint8 *, uint32 *, int fin, unsigned char *final_byte,
                      char *temp_ref, video_spec_head1 *vsh1, standard std);
/* reads a slice */
int read_slice(uint8 *, uint32 *, int fin, char *final_byte);
/* If the sequence_extension occurs immediately */
int probe_standard(media_entry *me, uint8 *, uint32 *, int fin,
                   standard *std);
/* reads picture coding extension */
int read_picture_coding_ext(uint8 *, uint32 *, int fin,
                            unsigned char *final_byte, video_spec_head2 *vsh2);

int load_MPV(media_entry *me);
int read_MPEG_video(media_entry *me, uint8 *buffer, uint32 *buffer_size,
                    uint64 *mtime, int *recallme, uint8 *marker);
int free_MPV(void *stat);

#endif