diff options
Diffstat (limited to 'libXfont/src/Speedo/set_spcs.c')
| -rw-r--r-- | libXfont/src/Speedo/set_spcs.c | 763 |
1 files changed, 0 insertions, 763 deletions
diff --git a/libXfont/src/Speedo/set_spcs.c b/libXfont/src/Speedo/set_spcs.c deleted file mode 100644 index 8fbdf1fd2..000000000 --- a/libXfont/src/Speedo/set_spcs.c +++ /dev/null @@ -1,763 +0,0 @@ -/* $Xorg: set_spcs.c,v 1.3 2000/08/17 19:46:26 cpqbld Exp $ */ - -/* - -Copyright 1989-1991, Bitstream Inc., Cambridge, MA. -You are hereby granted permission under all Bitstream propriety rights to -use, copy, modify, sublicense, sell, and redistribute the Bitstream Speedo -software and the Bitstream Charter outline font for any purpose and without -restrictions; provided, that this notice is left intact on all copies of such -software or font and that Bitstream's trademark is acknowledged as shown below -on all unmodified copies of such font. - -BITSTREAM CHARTER is a registered trademark of Bitstream Inc. - - -BITSTREAM INC. DISCLAIMS ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING -WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -PARTICULAR PURPOSE. BITSTREAM SHALL NOT BE LIABLE FOR ANY DIRECT OR INDIRECT -DAMAGES, INCLUDING BUT NOT LIMITED TO LOST PROFITS, LOST DATA, OR ANY OTHER -INCIDENTAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF OR IN ANY WAY CONNECTED -WITH THE SPEEDO SOFTWARE OR THE BITSTREAM CHARTER OUTLINE FONT. - -*/ -/* $XFree86: xc/lib/font/Speedo/set_spcs.c,v 1.3 2001/01/17 19:43:17 dawes Exp $ */ - - -/*************************** S E T _ S P C S . C ***************************** - * * - * This module implements all sp_set_specs() functionality. * - * * - ****************************************************************************/ -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#define SET_SPCS -#include "spdo_prv.h" /* General definitions for Speedo */ -#include "keys.h" - -#define DEBUG 0 - -#if DEBUG -#include <stdio.h> -#define SHOW(X) printf("X = %d\n", X) -#else -#define SHOW(X) -#endif - -/***** GLOBAL VARIABLES *****/ - -/***** GLOBAL FUNCTIONS *****/ - -/****** EXTERNAL VARIABLES *****/ - -/***** STATIC VARIABLES *****/ - - -/****** STATIC FUNCTIONS *****/ - -static boolean sp_setup_consts(PROTO_DECL2 fix15 xmin, fix15 xmax, - fix15 ymin, fix15 ymax); -static void sp_setup_tcb(PROTO_DECL2 tcb_t GLOBALFAR *ptcb); -static fix15 sp_setup_mult(PROTO_DECL2 fix31 input_mult); -static fix31 sp_setup_offset(PROTO_DECL2 fix31 input_offset); - - - -FUNCTION boolean set_specs( -GDECL -specs_t STACKFAR *specsarg) /* Bundle of conversion specifications */ -/* - * Called by host software to set character generation specifications - */ -{ -fix31 offcd; /* Offset to start of character directory */ -fix31 ofcns; /* Offset to start of constraint data */ -fix31 cd_size; /* Size of character directory */ -fix31 no_bytes_min; /* Min number of bytes in font buffer */ -ufix16 font_id; /* Font ID */ -ufix16 private_off; /* offset to private header */ -fix15 xmin; /* Minimum X ORU value in font */ -fix15 xmax; /* Maximum X ORU value in font */ -fix15 ymin; /* Minimum Y ORU value in font */ -fix15 ymax; /* Maximum Y ORU value in font */ - -sp_globals.specs_valid = FALSE; /* Flag specs not valid */ - -sp_globals.specs = *specsarg; /* copy specs structure into sp_globals */ -sp_globals.pspecs = &sp_globals.specs; -sp_globals.font = *sp_globals.pspecs->pfont; -sp_globals.pfont = &sp_globals.font; -sp_globals.font_org = sp_globals.font.org; - -if (read_word_u(sp_globals.font_org + FH_FMVER + 4) != 0x0d0a) - { - report_error(4); /* Font format error */ - return FALSE; - } -if (read_word_u(sp_globals.font_org + FH_FMVER + 6) != 0x0000) - { - report_error(4); /* Font format error */ - return FALSE; - } - -if (get_cust_no(*specsarg->pfont) == 0) - { - sp_globals.key32 = 0; - sp_globals.key4 = 0; - sp_globals.key6 = 0; - sp_globals.key7 = 0; - sp_globals.key8 = 0; - } -else - { - sp_globals.key32 = (KEY3 << 8) | KEY2; - sp_globals.key4 = KEY4; - sp_globals.key6 = KEY6; - sp_globals.key7 = KEY7; - sp_globals.key8 = KEY8; - } - - -sp_globals.no_chars_avail = read_word_u(sp_globals.font_org + FH_NCHRF); - -/* Read sp_globals.orus per em from font header */ -sp_globals.orus_per_em = read_word_u(sp_globals.font_org + FH_ORUPM); - -/* compute address of private header */ -private_off = read_word_u(sp_globals.font_org + FH_HEDSZ); -sp_globals.hdr2_org = sp_globals.font_org + private_off; - -/* set metric resolution if specified, default to outline res otherwise */ -if (private_off > EXP_FH_METRES) - { - sp_globals.metric_resolution = read_word_u(sp_globals.font_org + EXP_FH_METRES); - } -else - { - sp_globals.metric_resolution = sp_globals.orus_per_em; - } - -#if INCL_METRICS -sp_globals.kern.tkorg = sp_globals.font_org + read_long(sp_globals.hdr2_org + FH_OFFTK); -sp_globals.kern.pkorg = sp_globals.font_org + read_long(sp_globals.hdr2_org + FH_OFFPK); -sp_globals.kern.no_tracks = read_word_u(sp_globals.font_org + FH_NKTKS); -sp_globals.kern.no_pairs = read_word_u(sp_globals.font_org + FH_NKPRS); -#endif - -offcd = read_long(sp_globals.hdr2_org + FH_OFFCD); /* Read offset to character directory */ -ofcns = read_long(sp_globals.hdr2_org + FH_OFCNS); /* Read offset to constraint data */ -cd_size = ofcns - offcd; -if ((((sp_globals.no_chars_avail << 1) + 3) != cd_size) && - (((sp_globals.no_chars_avail * 3) + 4) != cd_size)) - { - report_error(4); /* Font format error */ - return FALSE; - } - -#if INCL_LCD /* Dynamic character data load suppoorted? */ -#if INCL_METRICS -no_bytes_min = read_long(sp_globals.hdr2_org + FH_OCHRD); /* Offset to character data */ -#else /* Dynamic character data load not supported? */ -no_bytes_min = read_long(sp_globals.hdr2_org + FH_OFFTK); /* Offset to track kerning data */ -#endif -#else /* Dynamic character data load not supported? */ -no_bytes_min = read_long(sp_globals.hdr2_org + FH_NBYTE); /* Offset to EOF + 1 */ -#endif - -sp_globals.font_buff_size = sp_globals.pfont->no_bytes; -if (sp_globals.font_buff_size < no_bytes_min) /* Minimum data not loaded? */ - { - report_error(1); /* Insufficient font data loaded */ - return FALSE; - } - -sp_globals.pchar_dir = sp_globals.font_org + offcd; -sp_globals.first_char_idx = read_word_u(sp_globals.font_org + FH_FCHRF); - -/* Register font name with sp_globals.constraint mechanism */ -font_id = read_word_u(sp_globals.font_org + FH_FNTID); -if (!(sp_globals.constr.font_id_valid) || (sp_globals.constr.font_id != font_id)) - { - sp_globals.constr.font_id = font_id; - sp_globals.constr.font_id_valid = TRUE; - sp_globals.constr.data_valid = FALSE; - } -sp_globals.constr.org = sp_globals.font_org + ofcns; -sp_globals.constr.active = ((sp_globals.pspecs->flags & CONSTR_OFF) == 0); - -/* Set up sliding point constants */ -/* Set pixel shift to accomodate largest transformed pixel value */ -xmin = read_word_u(sp_globals.font_org + FH_FXMIN); -xmax = read_word_u(sp_globals.font_org + FH_FXMAX); -ymin = read_word_u(sp_globals.font_org + FH_FYMIN); -ymax = read_word_u(sp_globals.font_org + FH_FYMAX); - -if (!sp_setup_consts(xmin,xmax,ymin,ymax)) - { - report_error(3); /* Requested specs out of range */ - return FALSE; - } -#if INCL_ISW -/* save the value of the max x oru that the fixed point constants are based on*/ -sp_globals.isw_xmax = xmax; -#endif - -/* Setup transformation control block */ -sp_setup_tcb(&sp_globals.tcb0); - - -/* Select output module */ -sp_globals.output_mode = sp_globals.pspecs->flags & 0x0007; - -#if INCL_USEROUT -if (!init_userout(sp_globals.pspecs)) -#endif - -switch (sp_globals.output_mode) - { -#if INCL_BLACK -case MODE_BLACK: /* Output mode 0 (Black writer) */ - sp_globals.init_out = sp_init_black; - sp_globals.begin_char = sp_begin_char_black; - sp_globals.begin_sub_char = sp_begin_sub_char_out; - sp_globals.begin_contour = sp_begin_contour_black; - sp_globals.curve = sp_curve_out; - sp_globals.line = sp_line_black; - sp_globals.end_contour = sp_end_contour_out; - sp_globals.end_sub_char = sp_end_sub_char_out; - sp_globals.end_char = sp_end_char_black; - break; -#endif - -#if INCL_SCREEN -case MODE_SCREEN: /* Output mode 1 (Screen writer) */ - sp_globals.init_out = sp_init_screen; - sp_globals.begin_char = sp_begin_char_screen; - sp_globals.begin_sub_char = sp_begin_sub_char_out; - sp_globals.begin_contour = sp_begin_contour_screen; - sp_globals.curve = sp_curve_screen; - sp_globals.line = sp_line_screen; - sp_globals.end_contour = sp_end_contour_screen; - sp_globals.end_sub_char = sp_end_sub_char_out; - sp_globals.end_char = sp_end_char_screen; - break; -#endif - -#if INCL_OUTLINE -case MODE_OUTLINE: /* Output mode 2 (Vector) */ - sp_globals.init_out = sp_init_outline; - sp_globals.begin_char = sp_begin_char_outline; - sp_globals.begin_sub_char = sp_begin_sub_char_outline; - sp_globals.begin_contour = sp_begin_contour_outline; - sp_globals.curve = sp_curve_outline; - sp_globals.line = sp_line_outline; - sp_globals.end_contour = sp_end_contour_outline; - sp_globals.end_sub_char = sp_end_sub_char_outline; - sp_globals.end_char = sp_end_char_outline; - break; -#endif - -#if INCL_2D -case MODE_2D: /* Output mode 3 */ - sp_globals.init_out = sp_init_2d; - sp_globals.begin_char = sp_begin_char_2d; - sp_globals.begin_sub_char = sp_begin_sub_char_out; - sp_globals.begin_contour = sp_begin_contour_2d; - sp_globals.curve = sp_curve_out; - sp_globals.line = sp_line_2d; - sp_globals.end_contour = sp_end_contour_out; - sp_globals.end_sub_char = sp_end_sub_char_out; - sp_globals.end_char = sp_end_char_2d; - break; -#endif - -default: - report_error(8); /* Unsupported mode requested */ - return FALSE; - } - - if (!fn_init_out(sp_globals.pspecs)) - { - report_error(5); - return FALSE; - } - - -sp_globals.curves_out = sp_globals.pspecs->flags & CURVES_OUT; - -if (sp_globals.pspecs->flags & BOGUS_MODE) /* Linear transformation requested? */ - { - sp_globals.tcb0.xtype = sp_globals.tcb0.ytype = 4; - } - -if ((sp_globals.pspecs->flags & SQUEEZE_LEFT) || - (sp_globals.pspecs->flags & SQUEEZE_RIGHT) || - (sp_globals.pspecs->flags & SQUEEZE_TOP) || - (sp_globals.pspecs->flags & SQUEEZE_BOTTOM) ) - { -#if (INCL_SQUEEZING) -#else - report_error(11); - return FALSE; -#endif - } - -if ((sp_globals.pspecs->flags & CLIP_LEFT) || - (sp_globals.pspecs->flags & CLIP_RIGHT) || - (sp_globals.pspecs->flags & CLIP_TOP) || - (sp_globals.pspecs->flags & CLIP_BOTTOM) ) - { -#if (INCL_CLIPPING) -#else - report_error(11); - return FALSE; -#endif - } - -sp_globals.specs_valid = TRUE; -return TRUE; -} - - - -#if INCL_MULTIDEV -#if INCL_BLACK || INCL_SCREEN || INCL_2D -FUNCTION boolean set_bitmap_device( -GDECL -bitmap_t *bfuncs, -ufix16 size) -{ - -if (size != sizeof(sp_globals.bitmap_device)) - return FALSE; - -sp_globals.bitmap_device = *bfuncs; -sp_globals.bitmap_device_set = TRUE; -} -#endif - -#if INCL_OUTLINE -FUNCTION boolean set_outline_device( -GDECL -outline_t *ofuncs, -ufix16 size) -{ - -if (size != sizeof(sp_globals.outline_device)) - return FALSE; - -sp_globals.outline_device = *ofuncs; -sp_globals.outline_device_set = TRUE; -} -#endif -#endif - - -#ifdef old -FUNCTION boolean sp_setup_consts( -GDECL -fix15 xmin, /* Minimum X ORU value in font */ -fix15 xmax, /* Maximum X ORU value in font */ -fix15 ymin, /* Minimum Y ORU value in font */ -fix15 ymax) /* Maximum Y ORU value in font */ -#else -static FUNCTION boolean sp_setup_consts( -GDECL -fix15 xmin, /* Minimum X ORU value in font */ -fix15 xmax, /* Maximum X ORU value in font */ -fix15 ymin, /* Minimum Y ORU value in font */ -fix15 ymax) /* Maximum Y ORU value in font */ -#endif -/* - * Sets the following constants used for fixed point arithmetic: - * sp_globals.multshift multipliers and products; range is 14 to 8 - * sp_globals.pixshift pixels: range is 0 to 8 - * sp_globals.mpshift shift from product to sub-pixels (sp_globals.multshift - sp_globals.pixshift) - * sp_globals.multrnd rounding for products - * sp_globals.pixrnd rounding for pixels - * sp_globals.mprnd rounding for sub-pixels - * sp_globals.onepix 1 pixel in shifted pixel units - * sp_globals.pixfix mask to eliminate fractional bits of shifted pixels - * sp_globals.depth_adj curve splitting depth adjustment - * Returns FALSE if specs are out of range - */ -{ -fix31 mult; /* Successive multiplier values */ -ufix32 num; /* Numerator of largest multiplier value */ -ufix32 numcopy; /* Copy of numerator */ -ufix32 denom; /* Denominator of largest multiplier value */ -ufix32 denomcopy; /* Copy of denominator */ -ufix32 pix_max; /* Maximum pixel rounding error */ -fix31 xmult; /* Coefficient of X oru value in transformation */ -fix31 ymult; /* Coefficient of Y oru value in transformation */ -fix31 offset; /* Constant in transformation */ -fix15 i; /* Loop counter */ -fix15 x, y; /* Successive corners of bounding box in ORUs */ -fix31 pixval; /* Successive pixel values multiplied by orus per em */ -fix15 xx = 0, yy = 0;/* Bounding box corner that produces max pixel value */ - -/* Determine numerator and denominator of largest multiplier value */ -mult = sp_globals.pspecs->xxmult >> 16; -if (mult < 0) - mult = -mult; -num = mult; - -mult = sp_globals.pspecs->xymult >> 16; -if (mult < 0) - mult = -mult; -if (mult > num) - num = mult; - -mult = sp_globals.pspecs->yxmult >> 16; -if (mult < 0) - mult = -mult; -if (mult > num) - num = mult; - -mult = sp_globals.pspecs->yymult >> 16; -if (mult < 0) - mult = -mult; -if (mult > num) - num = mult; -num++; /* Max absolute pixels per em (rounded up) */ -denom = (ufix32)sp_globals.orus_per_em; - -/* Set curve splitting depth adjustment to accomodate largest multiplier value */ -sp_globals.depth_adj = 0; /* 0 = 0.5 pel, 1 = 0.13 pel, 2 = 0.04 pel accuracy */ -denomcopy = denom; -/* The following two occurances of a strange method of shifting twice by 1 - are intentional and should not be changed to a single shift by 2. - It prevents MicroSoft C 5.1 from generating functions calls to do the shift. - Worse, using the REENTRANT_ALLOC option in conjunction with the /AC compiler - option, the function appears to be called incorrectly, causing depth_adj to always - be set to -7, causing very angular characters. */ - -while ((num > denomcopy) && (sp_globals.depth_adj < 5)) /* > 1, 4, 16, ... pixels per oru? */ - { - denomcopy <<= 1; - denomcopy <<= 1; - sp_globals.depth_adj++; /* Add 1, 2, 3, ... to depth adjustment */ - } -numcopy = num << 2; -while ((numcopy <= denom) && (sp_globals.depth_adj > -4)) /* <= 1/4, 1/16, 1/64 pix per oru? */ - { - numcopy <<= 1; - numcopy <<= 1; - sp_globals.depth_adj--; /* Subtract 1, 2, 3, ... from depth adjustment */ - } -SHOW(sp_globals.depth_adj); - -/* Set multiplier shift to accomodate largest multiplier value */ -sp_globals.multshift = 14; -numcopy = num; -while (numcopy >= denom) /* More than 1, 2, 4, ... pix per oru? */ - { - numcopy >>= 1; - sp_globals.multshift--; /* sp_globals.multshift is 13, 12, 11, ... */ - } - -sp_globals.multrnd = ((fix31)1 << sp_globals.multshift) >> 1; -SHOW(sp_globals.multshift); - - -pix_max = (ufix32)( 0xffff & read_word_u(sp_globals.hdr2_org + FH_PIXMX)); - -num = 0; -xmult = ((sp_globals.pspecs->xxmult >> 16) + 1) >> 1; -ymult = ((sp_globals.pspecs->xymult >> 16) + 1) >> 1; -offset = ((sp_globals.pspecs->xoffset >> 16) + 1) >> 1; -for (i = 0; i < 8; i++) - { - if (i == 4) - { - xmult = ((sp_globals.pspecs->yxmult >> 16) + 1) >> 1; - ymult = ((sp_globals.pspecs->yymult >> 16) + 1) >> 1; - offset = ((sp_globals.pspecs->yoffset >> 16) + 1) >> 1; - } - x = (i & BIT1)? xmin: xmax; - y = (i & BIT0)? ymin: ymax; - pixval = (fix31)x * xmult + (fix31)y * ymult + offset * denom; - if (pixval < 0) - pixval = -pixval; - if (pixval > num) - { - num = pixval; - xx = x; - yy = y; - } - } -if (xx < 0) - xx = -xx; -if (yy < 0) - yy = -yy; -num += xx + yy + ((pix_max + 2) * denom); - /* Allow (with 2:1 safety margin) for 1 pixel rounding errors in */ - /* xmult, ymult and offset values, pix_max pixel expansion */ - /* due to intelligent scaling, and */ - /* 1 pixel rounding of overall character position */ -denom = denom << 14; /* Note num is in units of half pixels times orus per em */ - -sp_globals.pixshift = -1; -while ((num <= denom) && (sp_globals.pixshift < 8)) /* Max pixels <= 32768, 16384, 8192, ... pixels? */ - { - num <<= 1; - sp_globals.pixshift++; /* sp_globals.pixshift = 0, 1, 2, ... */ - } -if (sp_globals.pixshift < 0) - return FALSE; - -SHOW(sp_globals.pixshift); -sp_globals.poshift = 16 - sp_globals.pixshift; - -sp_globals.onepix = (fix15)1 << sp_globals.pixshift; -sp_globals.pixrnd = sp_globals.onepix >> 1; -sp_globals.pixfix = ~0 << sp_globals.pixshift; - -sp_globals.mpshift = sp_globals.multshift - sp_globals.pixshift; -if (sp_globals.mpshift < 0) - return FALSE; -sp_globals.mprnd = ((fix31)1 << sp_globals.mpshift) >> 1; - -return TRUE; -} - -#ifdef old -FUNCTION void sp_setup_tcb( -GDECL -tcb_t GLOBALFAR *ptcb) /* Pointer to transformation control bloxk */ -#else -static FUNCTION void sp_setup_tcb( -GDECL -tcb_t GLOBALFAR *ptcb) /* Pointer to transformation control bloxk */ -#endif -/* - * Convert transformation coeffs to internal form - */ -{ - -ptcb->xxmult = sp_setup_mult(sp_globals.pspecs->xxmult); -ptcb->xymult = sp_setup_mult(sp_globals.pspecs->xymult); -ptcb->xoffset = sp_setup_offset(sp_globals.pspecs->xoffset); -ptcb->yxmult = sp_setup_mult(sp_globals.pspecs->yxmult); -ptcb->yymult = sp_setup_mult(sp_globals.pspecs->yymult); -ptcb->yoffset = sp_setup_offset(sp_globals.pspecs->yoffset); - -SHOW(ptcb->xxmult); -SHOW(ptcb->xymult); -SHOW(ptcb->xoffset); -SHOW(ptcb->yxmult); -SHOW(ptcb->yymult); -SHOW(ptcb->yoffset); - -type_tcb(ptcb); /* Classify transformation type */ -} - -FUNCTION static fix15 sp_setup_mult( -GDECL -fix31 input_mult) /* Multiplier in input format */ -/* - * Called by sp_setup_tcb() to convert multiplier in transformation - * matrix from external to internal form. - */ -{ -fix15 imshift; /* Right shift to internal format */ -fix31 imdenom; /* Divisor to internal format */ -fix31 imrnd; /* Rounding for division operation */ - -imshift = 15 - sp_globals.multshift; -imdenom = (fix31)sp_globals.orus_per_em << imshift; -imrnd = imdenom >> 1; - -input_mult >>= 1; -if (input_mult >= 0) - return (fix15)((input_mult + imrnd) / imdenom); -else - return -(fix15)((-input_mult + imrnd) / imdenom); -} - -FUNCTION static fix31 sp_setup_offset( -GDECL -fix31 input_offset) /* Multiplier in input format */ -/* - * Called by sp_setup_tcb() to convert offset in transformation - * matrix from external to internal form. - */ -{ -fix15 imshift; /* Right shift to internal format */ -fix31 imrnd; /* Rounding for right shift operation */ - -imshift = 15 - sp_globals.multshift; -imrnd = ((fix31)1 << imshift) >> 1; - -return (((input_offset >> 1) + imrnd) >> imshift) + sp_globals.mprnd; -} - -FUNCTION void type_tcb( -GDECL -tcb_t GLOBALFAR *ptcb) /* Pointer to transformation control bloxk */ -{ -fix15 x_trans_type; -fix15 y_trans_type; -fix15 xx_mult; -fix15 xy_mult; -fix15 yx_mult; -fix15 yy_mult; -fix15 h_pos; -fix15 v_pos; -fix15 x_ppo; -fix15 y_ppo; -fix15 x_pos; -fix15 y_pos; - -/* check for mirror image transformations */ -xx_mult = ptcb->xxmult; -xy_mult = ptcb->xymult; -yx_mult = ptcb->yxmult; -yy_mult = ptcb->yymult; - -ptcb->mirror = ((((fix31)xx_mult*(fix31)yy_mult)- - ((fix31)xy_mult*(fix31)yx_mult)) < 0) ? -1 : 1; - -if (sp_globals.pspecs->flags & BOGUS_MODE) /* Linear transformation requested? */ - { - ptcb->xtype = 4; - ptcb->ytype = 4; - - ptcb->xppo = 0; - ptcb->yppo = 0; - ptcb->xpos = 0; - ptcb->ypos = 0; - } -else /* Intelligent tranformation requested? */ - { - h_pos = ((ptcb->xoffset >> sp_globals.mpshift) + sp_globals.pixrnd) & sp_globals.pixfix; - v_pos = ((ptcb->yoffset >> sp_globals.mpshift) + sp_globals.pixrnd) & sp_globals.pixfix; - - x_trans_type = 4; - x_ppo = 0; - x_pos = 0; - - y_trans_type = 4; - y_ppo = 0; - y_pos = 0; - - if (xy_mult == 0) - { - if (xx_mult >= 0) - { - x_trans_type = 0; /* X pix is function of X orus only */ - x_ppo = xx_mult; - x_pos = h_pos; - } - else - { - x_trans_type = 1; /* X pix is function of -X orus only */ - x_ppo = -xx_mult; - x_pos = -h_pos; - } - } - - else if (xx_mult == 0) - { - if (xy_mult >= 0) - { - x_trans_type = 2; /* X pix is function of Y orus only */ - y_ppo = xy_mult; - y_pos = h_pos; - } - else - { - x_trans_type = 3; /* X pix is function of -Y orus only */ - y_ppo = -xy_mult; - y_pos = -h_pos; - } - } - - if (yx_mult == 0) - { - if (yy_mult >= 0) - { - y_trans_type = 0; /* Y pix is function of Y orus only */ - y_ppo = yy_mult; - y_pos = v_pos; - } - else - { - y_trans_type = 1; /* Y pix is function of -Y orus only */ - y_ppo = -yy_mult; - y_pos = -v_pos; - } - } - else if (yy_mult == 0) - { - if (yx_mult >= 0) - { - y_trans_type = 2; /* Y pix is function of X orus only */ - x_ppo = yx_mult; - x_pos = v_pos; - } - else - { - y_trans_type = 3; /* Y pix is function of -X orus only */ - x_ppo = -yx_mult; - x_pos = -v_pos; - } - } - - ptcb->xtype = x_trans_type; - ptcb->ytype = y_trans_type; - - ptcb->xppo = x_ppo; - ptcb->yppo = y_ppo; - ptcb->xpos = x_pos; - ptcb->ypos = y_pos; - } - -sp_globals.normal = (ptcb->xtype != 4) && (ptcb->ytype != 4); - -ptcb->xmode = 4; -ptcb->ymode = 4; - -SHOW(ptcb->xtype); -SHOW(ptcb->ytype); -SHOW(ptcb->xppo); -SHOW(ptcb->yppo); -SHOW(ptcb->xpos); -SHOW(ptcb->ypos); -} - -FUNCTION fix31 read_long( -GDECL -ufix8 FONTFAR *pointer) /* Pointer to first byte of encrypted 3-byte integer */ -/* - * Reads a 3-byte encrypted integer from the byte string starting at - * the specified point. - * Returns the decrypted value read as a signed integer. - */ -{ -fix31 tmpfix31; - -tmpfix31 = (fix31)((*pointer++) ^ sp_globals.key4) << 8; /* Read middle byte */ -tmpfix31 += (fix31)(*pointer++) << 16; /* Read most significant byte */ -tmpfix31 += (fix31)((*pointer) ^ sp_globals.key6); /* Read least significant byte */ -return tmpfix31; -} - -FUNCTION fix15 read_word_u( -GDECL -ufix8 FONTFAR *pointer) /* Pointer to first byte of unencrypted 2-byte integer */ -/* - * Reads a 2-byte unencrypted integer from the byte string starting at - * the specified point. - * Returns the decrypted value read as a signed integer. - */ -{ -fix15 tmpfix15; - -tmpfix15 = (fix15)(*pointer++) << 8; /* Read most significant byte */ -tmpfix15 += (fix15)(*pointer); /* Add least significant byte */ -return tmpfix15; -} - - |