global.h

mpeg2 decoder filter过滤服务端

/* global.h, global variables                                               */

/* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */

/*
 * Disclaimer of Warranty
 *
 * These software programs are available to the user without any license fee or
 * royalty on an "as is" basis.  The MPEG Software Simulation Group disclaims
 * any and all warranties, whether express, implied, or statuary, including any
 * implied warranties or merchantability or of fitness for a particular
 * purpose.  In no event shall the copyright-holder be liable for any
 * incidental, punitive, or consequential damages of any kind whatsoever
 * arising from the use of these programs.
 *
 * This disclaimer of warranty extends to the user of these programs and user's
 * customers, employees, agents, transferees, successors, and assigns.
 *
 * The MPEG Software Simulation Group does not represent or warrant that the
 * programs furnished hereunder are free of infringement of any third-party
 * patents.
 *
 * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware,
 * are subject to royalty fees to patent holders.  Many of these patents are
 * general enough such that they are unavoidable regardless of implementation
 * design.
 *
 */
#include "windows.h"
#include <stdio.h>
#include <io.h>
#include "inttypes.h"

//#include "mpeg2dec.h"

/* choose between declaration (GLOBAL undefined)
 * and definition (GLOBAL defined)
 * GLOBAL is defined in exactly one file mpeg2dec.c)
 */

// added by djhuang

/* code definition */
#define PICTURE_START_CODE			0x100
#define SLICE_START_CODE_MIN		0x101
#define SLICE_START_CODE_MAX		0x1AF
#define USER_DATA_START_CODE		0x1B2
#define SEQUENCE_HEADER_CODE		0x1B3
#define EXTENSION_START_CODE		0x1B5
#define SEQUENCE_END_CODE			0x1B7
#define GROUP_START_CODE			0x1B8


#define BUFFER_SIZE				2048


#define PRIVATE_STREAM_2			0x1BF

#define STORE_RGB24		1
#define STORE_YUY2		2

//#define BUFFER_SIZE				2048

#define PACK_START_CODE				0x1BA

#define CHROMA420		1
#define CHROMA422		2
#define CHROMA444		3


#define IDCT_MMX		1
#define	IDCT_FPU		2
#define IDCT_REF		3


#define FO_NONE			0
#define FO_FILM			1

#define I_TYPE			1
#define P_TYPE			2
#define B_TYPE			3

unsigned short VOB_ID, CELL_ID;

/* ISO/IEC 13818-2 section 6.2.2.3:  sequence_extension() */
int progressive_sequence;
int chroma_format;

/* ISO/IEC 13818-2 section 6.2.3: picture_header() */
int picture_coding_type;
int temporal_reference;

unsigned char *backward_reference_frame[3], *forward_reference_frame[3];
unsigned char *auxframe[3], *current_frame[3];
unsigned char *u422, *v422, *u444, *v444, *rgb24, *yuy2, *lum;
__int64 YUVRGB_Scale, YUVRGB_Offset, LumOffsetMask, LumGainMask;


int Coded_Picture_Width, Coded_Picture_Height, Chroma_Width, Chroma_Height;


float frame_rate, Frame_Rate;

int block_count, Second_Field;

/* decoder operation control flags */
int Check_Flag;
int Fault_Flag;
int Rip_Flag;
int Stop_Flag;
int FO_Flag;
int iDCT_Flag;
int Luminance_Flag;
int Scale_Flag;
int Store_Flag;  // Store RGB24 or YUY2
int SystemStream_Flag;

BOOL    gIsPictureDecoding;

BITMAPINFOHEADER birgb;

BITMAPINFOHEADER biyuv;

//unsigned char *u422, *v422, *u444, *v444, *rgb24, *yuy2, *lum;

int VideoPTS, AudioPTS;

//__int64 YUVRGB_Scale, YUVRGB_Offset, LumOffsetMask, LumGainMask;
int horizontal_size, vertical_size, mb_width, mb_height;
unsigned int hwidth, hwidthd8, dwidth, qwidth, hheightd2, qheightd2, nwidth;

int Bitrate_Meter;


#define ERROR_FLUSH       200
//BOOL    gIsPictureDecoding;
BOOL    gIsEOS;    // Indicating no more data will be received


short *block[8]
#ifdef GLOBAL
=
{
	0, 0, 0, 0, 0, 0, 0, 0
}
#endif
;

short *p_block[8]
#ifdef GLOBAL
=
{
	0, 0, 0, 0, 0, 0, 0, 0
}
#endif
;



/* gethdr.c */
//int Get_Hdr(void);
//void next_start_code(void);
void sequence_header(void);
// int slice_header(void);

void Initialize_Reference_IDCT();

/* getpic.c */
// int Decode_Picture(void);


//  int picture_coding_type;

unsigned int Frame_Number;
/*
void InitialDecoder (void);
int Decode_Bitstream (void);
void CheckSequenceHeader (void);
void InitSystem (void);
void UninitSystem (void);
*/
void decode_mpeg2 (uint8_t * start, uint8_t * end);
BOOL My_decode_mpeg2 (uint8_t * start, uint8_t * end);