www.pudn.com > encore50src.zip > mom_structs.h

 
#ifndef _MOM_STRUCTS_H_ 
#define _MOM_STRUCTS_H_ 
 
 
#include "momusys.h" 
 
#define VERSION		1	/* Image Structure Version */ 
 
/***** 
* 
*     Basic and generic image structure 
* 
*****/ 
enum image_type {SHORT_TYPE,FLOAT_TYPE,UCHAR_TYPE}; 
typedef enum image_type ImageType; 
 
union image_data 
{ 
  SInt *s;		/* SHORT data */ 
  Float *f;		/* FLOAT data */ 
  UChar *u;		/* UCHAR data */ 
}; 
typedef union image_data ImageData; 
 
struct image 
{ 
  Int version;		/* Version number */ 
  UInt x,y;		/* Image size */ 
  Char upperodd;	/* Flag to tell if the top line is considered 
			   as even or odd (used for hex grids) */ 
  Char grid;		/* Grid type: s = square, h = hexagonal */ 
  SInt *f;		/* Image data with short int values */ 
  ImageData *data;	/* NEW: pointer to image data */ 
  ImageType type;	/* NEW: type of the image */ 
}; 
typedef struct image Image; 
 
typedef struct image ImageI;	/* For compatibility with old source code */ 
typedef struct image ImageF;	/* For compatibility with old source code */ 
 
/***** 
* 
*     Recommended structures for VOPs, VOLs and VOs (now compliant with VM3.0) 
*     (in the VOP structure *all* entries from the VOL syntax which 
*     are necessary for decoding the VOP are duplicated. These entries 
*     are marked as "VOL ...") 
* 
*****/ 
struct vop 
{ 
  /* Actual syntax elements for VOP (standard) */ 
  Int prediction_type;		/* VOP prediction type */ 
  Int mod_time_base;		/* VOP modulo time base (absolute) */ 
  Float time_inc;		/* VOP time increment (relative to last mtb) */ 
  Int rounding_type; 
 
  Int width;			/* VOP height (smallest rectangle) */ 
  Int height;			/* VOP width  (smallest rectangle) */ 
  Int hor_spat_ref;		/* VOP horizontal ref. (for composition) */ 
  Int ver_spat_ref;		/* VOP vertical ref.   (for composition) */ 
   
  Int intra_dc_vlc_thr; 
 
  Int quantizer;		/* VOP quantizer for P-VOPs */ 
  Int intra_quantizer;		/* VOP quantizer for I-VOPs */ 
  
  /* Syntax elements copied from VOL (standard) */ 
  Int time_increment_resolution; 
 
  Int intra_acdc_pred_disable;	/* VOL disable INTRA DC prediction */ 
  Int sr_for;			/* VOP search range of motion vectors */ 
  Int fcode_for;		/* VOP dynamic range of motion vectors */ 
  Int quant_precision; 
  Int bits_per_pixel; 
 
  /* Pointers to the images (YUVA) and to related VOPs */ 
  Image *y_chan;		/* Y component of the VOP texture */ 
  Image *u_chan;		/* U component of the VOP texture */ 
  Image *v_chan;		/* V component of the VOP texture */ 
}; 
typedef struct vop Vop; 
 
struct object_layer_cfg 
{ 
	Float	frame_rate;			/* VOL frame rate */ 
    Int 	M;				    /* M-1 number of B-VOPs between consecutive P-VOPs*/ 
	Int	start_frame;			/* Frame at which to start coding */ 
	Int	end_frame;			    /* Frame at which to end coding */ 
	Int	bit_rate;			    /* Target bitrate */ 
	Int 	frame_skip;			/* Number of frames to skip between codings */ 
 
	Int	quantizer;			/* Initial value for H.263 INTRA quantizer */ 
	Int	intra_quantizer;		/* Initial value for H.263 INTER quantizer */ 
 
	Int	intra_period;	/* Regular rate of INTRA VOP */ 
 
/* Automatically calculated coding fields */ 
	Int	modulo_time_base[2];				/* Modulo time base must be maintained for VOL */ 
}; 
typedef struct object_layer_cfg VolConfig; 
 
 
#include "mom_util.h" 
#include "mom_access.h" 
 
 
#endif /* _MOM_STRUCTS_H_ */