quicktime/encore50/mom_structs.h

   1
   2 #ifndef _MOM_STRUCTS_H_
   3 #define _MOM_STRUCTS_H_
   4
   5
   6 #include "momusys.h"
   7
   8 #define VERSION         1       /* Image Structure Version */
   9
  10 /*****
  11 *
  12 *     Basic and generic image structure
  13 *
  14 *****/
  15 enum image_type {SHORT_TYPE,FLOAT_TYPE,UCHAR_TYPE};
  16 typedef enum image_type ImageType;
  17
  18 union image_data
  19 {
  20   SInt *s;              /* SHORT data */
  21   Float *f;             /* FLOAT data */
  22   UChar *u;             /* UCHAR data */
  23 };
  24 typedef union image_data ImageData;
  25
  26 struct image
  27 {
  28   Int version;          /* Version number */
  29   UInt x,y;             /* Image size */
  30   Char upperodd;        /* Flag to tell if the top line is considered
  31                            as even or odd (used for hex grids) */
  32   Char grid;            /* Grid type: s = square, h = hexagonal */
  33   SInt *f;              /* Image data with short int values */
  34   ImageData *data;      /* NEW: pointer to image data */
  35   ImageType type;       /* NEW: type of the image */
  36 };
  37 typedef struct image Image;
  38
  39 typedef struct image ImageI;    /* For compatibility with old source code */
  40 typedef struct image ImageF;    /* For compatibility with old source code */
  41
  42 /*****
  43 *
  44 *     Recommended structures for VOPs, VOLs and VOs (now compliant with VM3.0)
  45 *     (in the VOP structure *all* entries from the VOL syntax which
  46 *     are necessary for decoding the VOP are duplicated. These entries
  47 *     are marked as "VOL ...")
  48 *
  49 *****/
  50 struct vop
  51 {
  52   /* Actual syntax elements for VOP (standard) */
  53   Int prediction_type;          /* VOP prediction type */
  54   Int mod_time_base;            /* VOP modulo time base (absolute) */
  55   Float time_inc;               /* VOP time increment (relative to last mtb) */
  56   Int rounding_type;
  57
  58   Int width;                    /* VOP height (smallest rectangle) */
  59   Int height;                   /* VOP width  (smallest rectangle) */
  60   Int hor_spat_ref;             /* VOP horizontal ref. (for composition) */
  61   Int ver_spat_ref;             /* VOP vertical ref.   (for composition) */
  62
  63   Int intra_dc_vlc_thr;
  64
  65   Int quantizer;                /* VOP quantizer for P-VOPs */
  66   Int intra_quantizer;          /* VOP quantizer for I-VOPs */
  67
  68   /* Syntax elements copied from VOL (standard) */
  69   Int time_increment_resolution;
  70
  71   Int intra_acdc_pred_disable;  /* VOL disable INTRA DC prediction */
  72   Int sr_for;                   /* VOP search range of motion vectors */
  73   Int fcode_for;                /* VOP dynamic range of motion vectors */
  74   Int quant_precision;
  75   Int bits_per_pixel;
  76
  77   /* Pointers to the images (YUVA) and to related VOPs */
  78   Image *y_chan;                /* Y component of the VOP texture */
  79   Image *u_chan;                /* U component of the VOP texture */
  80   Image *v_chan;                /* V component of the VOP texture */
  81 };
  82 typedef struct vop Vop;
  83
  84 struct object_layer_cfg
  85 {
  86         Float   frame_rate;                     /* VOL frame rate */
  87     Int         M;                                  /* M-1 number of B-VOPs between consecutive P-VOPs*/
  88         Int     start_frame;                    /* Frame at which to start coding */
  89         Int     end_frame;                          /* Frame at which to end coding */
  90         Int     bit_rate;                           /* Target bitrate */
  91         Int     frame_skip;                     /* Number of frames to skip between codings */
  92
  93         Int     quantizer;                      /* Initial value for H.263 INTRA quantizer */
  94         Int     intra_quantizer;                /* Initial value for H.263 INTER quantizer */
  95
  96         Int     intra_period;   /* Regular rate of INTRA VOP */
  97
  98 /* Automatically calculated coding fields */
  99         Int     modulo_time_base[2];                            /* Modulo time base must be maintained for VOL */
 100 };
 101 typedef struct object_layer_cfg VolConfig;
 102
 103
 104 #include "mom_util.h"
 105 #include "mom_access.h"
 106
 107
 108 #endif /* _MOM_STRUCTS_H_ */