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Annotation of 43BSDTahoe/new/X/libibm/bitblt/bitblt_int.h, revision 1.1

1.1     ! root        1: /* $Header: bitblt_int.h,v 10.1 86/11/19 10:52:05 jg Exp $ */
        !             2: /*
        !             3:  *             Copyright (c) 1986 Brown University
        !             4:  *
        !             5:  * Permission to use, copy, modify and distribute this software and its
        !             6:  * documentation for any purpose and without fee is hereby granted, provided
        !             7:  * that the above copyright notice appear in all copies, and that both
        !             8:  * that copyright notice and this permission notice appear in supporting
        !             9:  * documentation, and that the name of Brown University not be used in
        !            10:  * advertising or publicity pertaining to distribution of the software without
        !            11:  * specific, written prior permission. Brown University makes no
        !            12:  * representations about the suitability of this software for any purpose.
        !            13:  * It is provided "as-is" without express or implied warranty.
        !            14:  *
        !            15:  * Written by Daniel Stone, Brown University/IRIS  (des@iris)
        !            16:  */
        !            17: 
        !            18: /*
        !            19:  * BITBLT COMPILATION OPTIONS:
        !            20:  *     define APA16            Bltter handles the APA16 screen.
        !            21:  *     define APA8             Bltter handles the APA8 screen.
        !            22:  *     define APA8C            Bltter handles the APA8C screen.
        !            23:  *     define AED              Bltter handles the AED screen.
        !            24:  *     define BLT_DEBUG        Bltter debug messages on.
        !            25:  *     define USE_APA16_HDWR   Bltter will use screen hardware where
        !            26:  *                             implemented.
        !            27:  */
        !            28: 
        !            29: #ifdef BLT_DEBUG
        !            30: #define DEBUGF(cond,stmt)      if (cond) { stmt; }
        !            31: #else
        !            32: #define DEBUGF(cond,stmt)
        !            33: #endif
        !            34: 
        !            35: /*
        !            36:  * bitblt_ext.h needs this defined because of XAddr.
        !            37:  */
        !            38: #include <machinecons/xio.h>
        !            39: /*
        !            40:  * Include the external interface routine to the bitblt routine, bitblt_ext.h.
        !            41:  */
        !            42: #include "bitblt_ext.h"
        !            43: 
        !            44: typedef Blt Blt_userdata;
        !            45: 
        !            46: typedef struct Blt_screen_info {
        !            47:        unsigned short *firstaddr;      /* first address on the screen bitmap */
        !            48:        unsigned short *lastaddr;       /* last address on the screen bitmap */
        !            49:        unsigned long cursortype;       /* Indicate the type of cursor on this
        !            50:                                           screen. */
        !            51: } Blt_screen_info;
        !            52:        
        !            53: typedef struct bitmap_info {
        !            54:        unsigned short *data;   /* pointer to the starting place of the bit
        !            55:                                   blt. */
        !            56:        Blt_Rectangle rect;     /* bounds of the area to be used or changed */
        !            57:        long nextline;  /* The amount to be added to the pointer to
        !            58:                           get to the next logical scanline */
        !            59: } Blt_bitmap_info;
        !            60: 
        !            61: typedef struct Blt_sysdata {
        !            62:        long height,width;      /* the height and width (in bits) of the
        !            63:                                   destination area to be changed */
        !            64:        short   nshorts;        /* number of destination shorts to be changed */
        !            65:        short   top_to_bot;     /* If non-zero it indicates the blt is to go
        !            66:                                   from right to left, bottom to top */
        !            67:        short   is_src;         /* Indicates that the rule uses the source */
        !            68:        short   rule;           /* combination rule or "mode" to be used with
        !            69:                                   the data */
        !            70:        short   preload_src;    /* Indicates 2 source words are needed to make
        !            71:                                   the first destination word. */
        !            72:        short   preload_msk;    /* Indicates 2 mask words are needed to make
        !            73:                                   the first destination word. */
        !            74:        short   skew_src;       /* The amount the source must be shifted to
        !            75:                                   line up with the destination */
        !            76:        short   skew_msk;       /* The amount the mask must be shifted to
        !            77:                                   line up with the destination */
        !            78:        unsigned short left_mask;  /* left mask to protect those bits on the
        !            79:                                      left edge that are not to be changed */
        !            80:        unsigned short right_mask; /* right mask to protect those bits on the
        !            81:                                      right edge that are not to be changed */
        !            82: 
        !            83:        unsigned short *tile_ptr;  /* Points to the Tile to be used to tile
        !            84:                                      the destination */
        !            85:        Blt_bitmap_info dst;    /* Internal information for the destination 
        !            86:                                   bitmap. */
        !            87:        Blt_bitmap_info src;    /* Internal information for the source bitmap */
        !            88:        Blt_bitmap_info msk;    /* Internal information for the mask bitmap*/
        !            89: #if (APA8 || APA8C)
        !            90:        short   dst_plus;       /* the amount to increment the destination
        !            91:                                   pointer to get to the next word. (usually
        !            92:                                   its 1, with the APA-8 its 2)*/
        !            93:        short   src_plus;       /* the amount to increment the source 
        !            94:                                   pointer to get to the next word. (usually
        !            95:                                   its 1, with the APA-8 its 2)*/
        !            96: #endif
        !            97: } Blt_sysdata;
        !            98: 
        !            99: #define SETRECT(dst,l,t,r,b) {                 \
        !           100:        (dst)->origin_x = l;  (dst)->origin_y = t;      \
        !           101:        (dst)->corner_x = r; (dst)->corner_y = b;       \
        !           102: }
        !           103: 
        !           104: /*
        !           105:  * Macro to determine if a bitmap points to the APA-8 screen.
        !           106:  */
        !           107: #define APA8BASE       0xf4d00000
        !           108: #define APA8_BYTE_SIZE (128*512)
        !           109: 
        !           110: /*
        !           111:  * Macro to determine if a bitmap points to the APA-8 screen.
        !           112:  */
        !           113: #define APA8CBASE      0xf4d20000
        !           114: #define APA8C_BYTE_SIZE        (128*512)
        !           115: 
        !           116: /*
        !           117:  * Macro to determine if a bitmap points to the APA-16 screen.
        !           118:  */
        !           119: #define APA16BASE      0xf4d80000
        !           120: #define APA16_BYTE_SIZE        (128*1024)
        !           121: 
        !           122: /*
        !           123:  * Macro to determine if a bitmap points to the AED's offscreen bitmap
        !           124:  */
        !           125: #define AEDBASE                0xEF100000
        !           126: #define AED_BYTE_SIZE  (128*800)
        !           127: 
        !           128: /*
        !           129:  * Macro to determine if a bitmap points to the screen.
        !           130:  */
        !           131: #define IS_APA8(BM)    (APA8BASE <= (long)BM.base && \
        !           132:                         (long)BM.base < (APA8BASE+(2*APA8_BYTE_SIZE)))
        !           133: 
        !           134: #define IS_APA8C(BM)   (APA8CBASE <= (long)BM.base && \
        !           135:                         (long)BM.base < (APA8CBASE+(2*APA8C_BYTE_SIZE)))
        !           136: 
        !           137: #define IS_APA8orAPA8C(BM)     (APA8BASE <= (long)BM.base && \
        !           138:                                (long)BM.base < (APA8CBASE+(2*APA8C_BYTE_SIZE)))
        !           139: 
        !           140: #define IS_APA16(BM)   (APA16BASE <= (long)BM.base && \
        !           141:                        (long)BM.base < (APA16BASE+APA16_BYTE_SIZE))
        !           142: 
        !           143: #define IS_AED(BM)     (AEDBASE <= (long)BM.base && \
        !           144:                        (long)BM.base < (AEDBASE+AED_BYTE_SIZE))
        !           145: 
        !           146: #define DstClear        0
        !           147: #define SrcAnd          1
        !           148: #define SrcAndNotDst    2
        !           149: #define SrcCopy         3
        !           150: #define NotSrcAnd       4
        !           151: #define DstCopy         5
        !           152: #define SrcXor          6
        !           153: #define SrcOr           7
        !           154: #define NotSrcAndNotDst 8
        !           155: #define NotSrcXor       9
        !           156: #define NotDstCopy      10
        !           157: #define SrcOrNotDst     11
        !           158: #define NotSrcCopy      12
        !           159: #define NotSrcOr        13
        !           160: #define NotSrcOrNotDst  14
        !           161: #define DstSet          15
        !           162:  
        !           163: #define TileDstClear     16
        !           164: #define TileAnd          17
        !           165: #define TileAndNotDst    18
        !           166: #define TileCopy         19
        !           167: #define NotTileAnd       20
        !           168: #define TileDstCopy      21
        !           169: #define TileXor          22
        !           170: #define TileOr           23
        !           171: #define NotTileAndNotDst 24
        !           172: #define NotTileXor       25
        !           173: #define TileNotDstCopy   26
        !           174: #define TileOrNotDst     27
        !           175: #define NotTileCopy      28
        !           176: #define NotTileOr        29
        !           177: #define NotTileOrNotDst  30
        !           178: #define TileDstSet       31
        !           179: 
        !           180: #define SRC_TO_TILE    TileDstClear
        !           181: 
        !           182: /*
        !           183:  * Macros to determine if the given rule refers to a tile or a source
        !           184:  * bitmap.
        !           185:  * NOTE: This Macro depends on the order of the defines above.
        !           186:  */
        !           187: #define IS_SRC(rule)   ((rule < TileDstClear) && (rule != DstSet) && \
        !           188:                         (rule != DstClear) && (rule != NotDstCopy))
        !           189: 
        !           190: #define IS_SCREEN(bitmap) (blt_cur_screen.firstaddr <= bitmap.base && \
        !           191:                           bitmap.base < blt_cur_screen.lastaddr)
        !           192: 
        !           193: #ifndef BPW
        !           194: /*
        !           195:  * Macros for division from words and bytes.
        !           196:  */
        !           197: #define BPW            16 /* Bits per Word */
        !           198: #define LOG2_BPW       4
        !           199: #define MOD_BPW(value) ((value) & (BPW-1))
        !           200: #define DIV_BPW(value) ((value) >> LOG2_BPW)
        !           201: #define MUL_BPW(value) ((value) << LOG2_BPW)
        !           202: 
        !           203: /*
        !           204:  * Bits TO Words.
        !           205:  */
        !           206: #define BTOW(bits)     (DIV_BPW((bits) + (BPW-1)))
        !           207: #endif BPW
        !           208: 
        !           209: /*
        !           210:  * Macros for the division and multiplication by 2.
        !           211:  */
        !           212: #define DIV_2(n) ((n) >> 1)
        !           213: #define MUL_2(n) ((n) << 1)
        !           214: #define MOD_2(n) ((n) & 0x1)
        !           215: 
        !           216: /*
        !           217:  * Need to multiply by 4 when using the APA-8.
        !           218:  */
        !           219: #define MUL_4(n) ((n) << 2)
        !           220: 
        !           221: /*
        !           222:  * Bits Per Byte.
        !           223:  */
        !           224: #define BPB             8
        !           225: #define LOG2_BPB        3
        !           226: #define MOD_BPB(value)  ((value) & (BPB-1))
        !           227: #define DIV_BPB(value)  ((value) >> LOG2_BPB)
        !           228: #define MUL_BPB(value)  ((value) << LOG2_BPB)
        !           229: /*
        !           230:  * Bits TO Bytes.
        !           231:  */
        !           232: #define BTOB(bits)      (DIV_BPB((bits) + (BPB-1)))
        !           233: 
        !           234: extern Blt_screen_info blt_cur_screen;
        !           235: #ifdef BLT_DEBUG
        !           236: extern int blt_debug;
        !           237: #endif
        !           238: 
        !           239: #define MIN(a,b)       ((a < b) ? (a) : (b))
        !           240: #define MAX(a,b)       ((a > b) ? (a) : (b))

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