global.h

mpeg2 decoder filter过滤服务端

EXTERN int Coded_Picture_Width;
EXTERN int Coded_Picture_Height;
EXTERN int Chroma_Width;
EXTERN int Chroma_Height;
EXTERN int block_count;
EXTERN int Second_Field;
EXTERN int profile, level;

/* normative derived variables (as per ISO/IEC 13818-2) */
EXTERN int horizontal_size;
EXTERN int vertical_size;
EXTERN int mb_width;
EXTERN int mb_height;
EXTERN double bit_rate;
EXTERN double frame_rate; 



/* headers */

/* ISO/IEC 13818-2 section 6.2.2.1:  sequence_header() */
EXTERN int aspect_ratio_information;
EXTERN int frame_rate_code; 
EXTERN int bit_rate_value; 
EXTERN int vbv_buffer_size;
EXTERN int constrained_parameters_flag;

/* ISO/IEC 13818-2 section 6.2.2.3:  sequence_extension() */
EXTERN int profile_and_level_indication;
EXTERN int progressive_sequence;
EXTERN int chroma_format;
EXTERN int low_delay;
EXTERN int frame_rate_extension_n;
EXTERN int frame_rate_extension_d;

/* ISO/IEC 13818-2 section 6.2.2.4:  sequence_display_extension() */
EXTERN int video_format;  
EXTERN int color_description;
EXTERN int color_primaries;
EXTERN int transfer_characteristics;
EXTERN int matrix_coefficients;
EXTERN int display_horizontal_size;
EXTERN int display_vertical_size;

/* ISO/IEC 13818-2 section 6.2.3: picture_header() */
EXTERN int temporal_reference;
EXTERN int picture_coding_type;
EXTERN int vbv_delay;
EXTERN int full_pel_forward_vector;
EXTERN int forward_f_code;
EXTERN int full_pel_backward_vector;
EXTERN int backward_f_code;


/* ISO/IEC 13818-2 section 6.2.3.1: picture_coding_extension() header */
EXTERN int f_code[2][2];
EXTERN int intra_dc_precision;
EXTERN int picture_structure;
EXTERN int top_field_first;
EXTERN int frame_pred_frame_dct;
EXTERN int concealment_motion_vectors;

EXTERN int intra_vlc_format;

EXTERN int repeat_first_field;

EXTERN int chroma_420_type;
EXTERN int progressive_frame;
EXTERN int composite_display_flag;
EXTERN int v_axis;
EXTERN int field_sequence;
EXTERN int sub_carrier;
EXTERN int burst_amplitude;
EXTERN int sub_carrier_phase;



/* ISO/IEC 13818-2 section 6.2.3.3: picture_display_extension() header */
EXTERN int frame_center_horizontal_offset[3];
EXTERN int frame_center_vertical_offset[3];



/* ISO/IEC 13818-2 section 6.2.2.5: sequence_scalable_extension() header */
EXTERN int layer_id;
EXTERN int lower_layer_prediction_horizontal_size;
EXTERN int lower_layer_prediction_vertical_size;
EXTERN int horizontal_subsampling_factor_m;
EXTERN int horizontal_subsampling_factor_n;
EXTERN int vertical_subsampling_factor_m;
EXTERN int vertical_subsampling_factor_n;


/* ISO/IEC 13818-2 section 6.2.3.5: picture_spatial_scalable_extension() header */
EXTERN int lower_layer_temporal_reference;
EXTERN int lower_layer_horizontal_offset;
EXTERN int lower_layer_vertical_offset;
EXTERN int spatial_temporal_weight_code_table_index;
EXTERN int lower_layer_progressive_frame;
EXTERN int lower_layer_deinterlaced_field_select;






/* ISO/IEC 13818-2 section 6.2.3.6: copyright_extension() header */
EXTERN int copyright_flag;
EXTERN int copyright_identifier;
EXTERN int original_or_copy;
EXTERN int copyright_number_1;
EXTERN int copyright_number_2;
EXTERN int copyright_number_3;

/* ISO/IEC 13818-2 section 6.2.2.6: group_of_pictures_header()  */
EXTERN int drop_flag;
EXTERN int hour;
EXTERN int minute;
EXTERN int sec;
EXTERN int frame;
EXTERN int closed_gop;
EXTERN int broken_link;



/* layer specific variables (needed for SNR and DP scalability) */
EXTERN struct layer_data {
  /* bit input */
  int Infile;
  unsigned char Rdbfr[2048];
  unsigned char *Rdptr;
  unsigned char Inbfr[16];
  /* from mpeg2play */
  unsigned int Bfr;
  unsigned char *Rdmax;
  int Incnt;
  int Bitcnt;
  /* sequence header and quant_matrix_extension() */
  int intra_quantizer_matrix[64];
  int non_intra_quantizer_matrix[64];
  int chroma_intra_quantizer_matrix[64];
  int chroma_non_intra_quantizer_matrix[64];
  
  int load_intra_quantizer_matrix;
  int load_non_intra_quantizer_matrix;
  int load_chroma_intra_quantizer_matrix;
  int load_chroma_non_intra_quantizer_matrix;

  int MPEG2_Flag;
  /* sequence scalable extension */
  int scalable_mode;
  /* picture coding extension */
  int q_scale_type;
  int alternate_scan;
  /* picture spatial scalable extension */
  int pict_scal;
  /* slice/macroblock */
  int priority_breakpoint;
  int quantizer_scale;
  int intra_slice;
  short block[12][64];
} base, enhan, *ld;



#ifdef VERIFY
EXTERN int verify_sequence_header;
EXTERN int verify_group_of_pictures_header;
EXTERN int verify_picture_header;
EXTERN int verify_slice_header;
EXTERN int verify_sequence_extension;
EXTERN int verify_sequence_display_extension;
EXTERN int verify_quant_matrix_extension;
EXTERN int verify_sequence_scalable_extension;
EXTERN int verify_picture_display_extension;
EXTERN int verify_picture_coding_extension;
EXTERN int verify_picture_spatial_scalable_extension;
EXTERN int verify_picture_temporal_scalable_extension;
EXTERN int verify_copyright_extension;
#endif /* VERIFY */


EXTERN int Decode_Layer;

/* verify.c */
#ifdef VERIFY
void Check_Headers _ANSI_ARGS_((int Bitstream_Framenum, int Sequence_Framenum));
void Clear_Verify_Headers _ANSI_ARGS_((void));
#endif /* VERIFY */


EXTERN int global_MBA;
EXTERN int global_pic;
EXTERN int True_Framenum;

// added by djhuang

#define BUFFER_SIZE				2048


#define PRIVATE_STREAM_2			0x1BF

#define STORE_RGB24		1
#define STORE_YUY2		2

//#define BUFFER_SIZE				2048


#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;

EXTERN double  Frame_Rate;

/* 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;
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


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

EXTERN 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;

EXTERN  void InitialDecoder _ANSI_ARGS_((void));
EXTERN  int Decode_Bitstream _ANSI_ARGS_((void));
EXTERN  void CheckSequenceHeader _ANSI_ARGS_((void));
EXTERN  void InitSystem _ANSI_ARGS_((void));
EXTERN  void UninitSystem _ANSI_ARGS_((void));