/xbmc/visualizations/Goom/goom2k4-0/src/gfontlib.c
C | 231 lines | 195 code | 30 blank | 6 comment | 37 complexity | 42362a88122ccbf50b978aec0ecf10f3 MD5 | raw file
1#include "goom_config.h" 2#include "gfontrle.h" 3#include "gfontlib.h" 4#include <string.h> 5#include <stdlib.h> 6 7static Pixel ***font_chars; 8static int *font_width; 9static int *font_height; 10static Pixel ***small_font_chars; 11static int *small_font_width; 12static int *small_font_height; 13 14void gfont_load (void) { 15 unsigned char *gfont; 16 unsigned int i = 0, j = 0; 17 unsigned int nba = 0; 18 unsigned int current = 32; 19 int *font_pos; 20 /* decompress le rle */ 21 22 23 24 gfont = malloc (the_font.width*the_font.height*the_font.bytes_per_pixel); 25 while (i<the_font.rle_size) { 26 unsigned char c = the_font.rle_pixel [i++]; 27 if (c == 0) { 28 unsigned int nb = the_font.rle_pixel [i++]; 29 while (nb--) 30 gfont[j++] = 0; 31 } 32 else 33 gfont [j++] = c; 34 } 35 36 /* determiner les positions de chaque lettre. */ 37 38 font_height = calloc (256,sizeof(int)); 39 small_font_height = calloc (256,sizeof(int)); 40 font_width = calloc (256,sizeof(int)); 41 small_font_width = calloc (256,sizeof(int)); 42 font_chars = calloc (256,sizeof(int**)); 43 small_font_chars = calloc (256,sizeof(int**)); 44 font_pos = calloc (256,sizeof(int)); 45 46 for (i=0;i<the_font.width;i++) { 47 unsigned char a = gfont [i*4 + 3]; 48 if (a) 49 nba ++; 50 else 51 nba = 0; 52 if (nba == 2) { 53 font_width [current] = i - font_pos [current]; 54 small_font_width [current] = font_width [current]/2; 55 font_pos [++current] = i; 56 font_height [current] = the_font.height - 2; 57 small_font_height [current] = font_height [current]/2; 58 } 59 } 60 font_pos [current] = 0; 61 font_height [current] = 0; 62 small_font_height [current] = 0; 63 64 /* charger les lettres et convertir au format de la machine */ 65 66 for (i=33;i<current;i++) { 67 int x; int y; 68 font_chars [i] = malloc (font_height[i]*sizeof(int *)); 69 small_font_chars [i] = malloc (font_height[i]*sizeof(int *)/2); 70 for (y = 0; y < font_height[i]; y++) { 71 font_chars [i][y] = malloc (font_width[i]*sizeof(int)); 72 for (x = 0; x < font_width[i]; x++) { 73 unsigned int r,g,b,a; 74 r = gfont[(y+2)*(the_font.width*4)+(x*4+font_pos[i]*4)]; 75 g = gfont[(y+2)*(the_font.width*4)+(x*4+font_pos[i]*4+1)]; 76 b = gfont[(y+2)*(the_font.width*4)+(x*4+font_pos[i]*4+2)]; 77 a = gfont[(y+2)*(the_font.width*4)+(x*4+font_pos[i]*4+3)]; 78 font_chars [i][y][x].val = 79 (r<<(ROUGE*8))|(g<<(VERT*8))|(b<<(BLEU*8))|(a<<(ALPHA*8)); 80 } 81 } 82 for (y = 0; y < font_height[i]/2; y++) { 83 small_font_chars [i][y] = malloc (font_width[i]*sizeof(int)/2); 84 for (x = 0; x < font_width[i]/2; x++) { 85 unsigned int r1,g1,b1,a1,r2,g2,b2,a2,r3,g3,b3,a3,r4,g4,b4,a4; 86 r1 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4)]; 87 g1 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4+1)]; 88 b1 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4+2)]; 89 a1 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4+3)]; 90 r2 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4+4)]; 91 g2 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4+5)]; 92 b2 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4+6)]; 93 a2 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4+7)]; 94 r3 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4)]; 95 g3 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4+1)]; 96 b3 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4+2)]; 97 a3 = gfont[(2*y+3)*(the_font.width*4)+(x*8+font_pos[i]*4+3)]; 98 r4 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4+4)]; 99 g4 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4+5)]; 100 b4 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4+6)]; 101 a4 = gfont[2*(y+1)*(the_font.width*4)+(x*8+font_pos[i]*4+7)]; 102 small_font_chars [i][y][x].val = 103 (((r1 + r2 + r3 + r4)>>2)<<(ROUGE*8))| 104 (((g1 + g2 + g3 + g4)>>2)<<(VERT*8))| 105 (((b1 + b2 + b3 + b4)>>2)<<(BLEU*8))| 106 (((a1 + a2 + a3 + a4)>>2)<<(ALPHA*8)); 107 } 108 } 109 } 110 111 /* definir les lettres restantes */ 112 113 for (i=0;i<256;i++) { 114 if (font_chars[i]==0) { 115 font_chars[i]=font_chars[42]; 116 small_font_chars[i]=small_font_chars[42]; 117 font_width[i]=font_width[42]; 118 font_pos[i]=font_pos[42]; 119 font_height[i]=font_height[42]; 120 small_font_width[i]=small_font_width[42]; 121 small_font_height[i]=small_font_height[42]; 122 } 123 } 124 125 font_width [32] = (the_font.height / 2) - 1; 126 small_font_width [32] = font_width [32]/2; 127 font_chars [32] = 0; 128 small_font_chars [32] = 0; 129 free( gfont ); 130 free( font_pos ); 131} 132 133void goom_draw_text (Pixel * buf,int resolx,int resoly, 134 int x, int y, 135 const char *str, float charspace, int center) { 136 float fx = (float) x; 137 int fin = 0; 138 139 Pixel ***cur_font_chars; 140 int *cur_font_width; 141 int *cur_font_height; 142 143 if (resolx>320) 144 { 145 /* printf("use big\n"); */ 146 cur_font_chars = font_chars; 147 cur_font_width = font_width; 148 cur_font_height = font_height; 149 } 150 else 151 { 152 /* printf ("use small\n"); */ 153 cur_font_chars = small_font_chars; 154 cur_font_width = small_font_width; 155 cur_font_height = small_font_height; 156 } 157 158 if (cur_font_chars == NULL) 159 return ; 160 161 if (center) { 162 unsigned char *tmp = (unsigned char*)str; 163 float lg = -charspace; 164 165 while (*tmp != '\0') 166 lg += cur_font_width[*(tmp++)] + charspace; 167 168 fx -= lg / 2; 169 } 170 171 while (!fin) { 172 unsigned char c = *str; 173 174 x = (int) fx; 175 176 if (c == '\0') 177 fin = 1; 178 else if (cur_font_chars[c]==0) { 179 fx += cur_font_width[c] + charspace; 180 } 181 else { 182 int xx, yy; 183 int xmin = x; 184 int xmax = x + cur_font_width[c]; 185 int ymin = y - cur_font_height[c]; 186 int ymax = y; 187 188 yy = ymin; 189 190 if (xmin < 0) 191 xmin = 0; 192 193 if (xmin >= resolx - 1) 194 return; 195 196 if (xmax >= (int) resolx) 197 xmax = resolx - 1; 198 199 if (yy < 0) 200 yy = 0; 201 202 if (yy <= (int) resoly - 1) { 203 if (ymax >= (int) resoly - 1) 204 ymax = resoly - 1; 205 206 for (; yy < ymax; yy++) 207 for (xx = xmin; xx < xmax; xx++) 208 { 209 Pixel color = cur_font_chars[c][yy - ymin][xx - x]; 210 Pixel transparency; 211 transparency.val = color.val & A_CHANNEL; 212 if (transparency.val) 213 { 214 if (transparency.val==A_CHANNEL) buf[yy * resolx + xx] = color; 215 else 216 { 217 Pixel back = buf[yy * resolx + xx]; 218 unsigned int a1 = color.channels.a; 219 unsigned int a2 = 255 - a1; 220 buf[yy * resolx + xx].channels.r = (unsigned char)((((unsigned int)color.channels.r * a1) + ((unsigned int)back.channels.r * a2)) >> 8); 221 buf[yy * resolx + xx].channels.g = (unsigned char)((((unsigned int)color.channels.g * a1) + ((unsigned int)back.channels.g * a2)) >> 8); 222 buf[yy * resolx + xx].channels.b = (unsigned char)((((unsigned int)color.channels.b * a1) + ((unsigned int)back.channels.b * a2)) >> 8); 223 } 224 } 225 } 226 } 227 fx += cur_font_width[c] + charspace; 228 } 229 str++; 230 } 231}