libvo/font_load_ft.c

   1 /*
   2  * Renders antialiased fonts for mplayer using freetype library.
   3  * Should work with TrueType, Type1 and any other font supported by libfreetype.
   4  *
   5  * Artur Zaprzala <zybi@fanthom.irc.pl>
   6  *
   7  * ported inside MPlayer by Jindrich Makovicka <makovick@gmail.com>
   8  *
   9  * This file is part of MPlayer.
  10  *
  11  * MPlayer is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * MPlayer is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <math.h>
  31 #include <string.h>
  32
  33 #ifdef CONFIG_ICONV
  34 #include <iconv.h>
  35 #endif
  36
  37 #include <ft2build.h>
  38 #include FT_FREETYPE_H
  39 #include FT_GLYPH_H
  40
  41 #ifdef CONFIG_FONTCONFIG
  42 #include <fontconfig/fontconfig.h>
  43 #endif
  44
  45 #include "libavutil/common.h"
  46 #include "mpbswap.h"
  47 #include "font_load.h"
  48 #include "mp_msg.h"
  49 #include "mplayer.h"
  50 #include "path.h"
  51 #include "osd_font.h"
  52
  53 #if (FREETYPE_MAJOR > 2) || (FREETYPE_MAJOR == 2 && FREETYPE_MINOR >= 1)
  54 #define HAVE_FREETYPE21
  55 #endif
  56
  57 char *subtitle_font_encoding = NULL;
  58 float text_font_scale_factor = 3.5;
  59 float osd_font_scale_factor = 4.0;
  60 float subtitle_font_radius = 2.0;
  61 float subtitle_font_thickness = 2.0;
  62 // 0 = no autoscale
  63 // 1 = video height
  64 // 2 = video width
  65 // 3 = diagonal
  66 int subtitle_autoscale = 3;
  67
  68 int vo_image_width = 0;
  69 int vo_image_height = 0;
  70 int force_load_font;
  71
  72 int using_freetype = 0;
  73 #ifdef CONFIG_FONTCONFIG
  74 int font_fontconfig = 1;
  75 #else
  76 int font_fontconfig = -1;
  77 #endif
  78
  79 //// constants
  80 static unsigned int const colors = 256;
  81 static unsigned int const maxcolor = 255;
  82 static unsigned const   base = 256;
  83 static unsigned const first_char = 33;
  84 #define MAX_CHARSET_SIZE 60000
  85
  86 static FT_Library library;
  87
  88 #define OSD_CHARSET_SIZE 15
  89
  90 static const FT_ULong osd_charset[OSD_CHARSET_SIZE] =
  91 {
  92     0xe001, 0xe002, 0xe003, 0xe004, 0xe005, 0xe006, 0xe007, 0xe008,
  93     0xe009, 0xe00a, 0xe00b, 0xe010, 0xe011, 0xe012, 0xe013
  94 };
  95
  96 static const FT_ULong osd_charcodes[OSD_CHARSET_SIZE] =
  97 {
  98     0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,
  99     0x09,0x0a,0x0b,0x10,0x11,0x12,0x13
 100 };
 101
 102 #define f266ToInt(x)            (((x)+32)>>6)   // round fractional fixed point number to integer
 103                                                 // coordinates are in 26.6 pixels (i.e. 1/64th of pixels)
 104 #define f266CeilToInt(x)        (((x)+63)>>6)   // ceiling
 105 #define f266FloorToInt(x)       ((x)>>6)        // floor
 106 #define f1616ToInt(x)           (((x)+0x8000)>>16)      // 16.16
 107 #define floatTof266(x)          ((int)((x)*(1<<6)+0.5))
 108
 109 #define ALIGN(x)                (((x)+7)&~7)    // 8 byte align
 110
 111 #define WARNING(msg, args...)      mp_msg(MSGT_OSD, MSGL_WARN, msg "\n", ## args)
 112
 113 #define DEBUG 0
 114
 115 //static double ttime;
 116
 117
 118 static void paste_bitmap(unsigned char *bbuffer, FT_Bitmap *bitmap, int x, int y, int width, int height, int bwidth) {
 119     int drow = x+y*width;
 120     int srow = 0;
 121     int sp, dp, w, h;
 122     if (bitmap->pixel_mode==ft_pixel_mode_mono)
 123         for (h = bitmap->rows; h>0 && height > 0; --h, height--, drow+=width, srow+=bitmap->pitch)
 124             for (w = bwidth, sp=dp=0; w>0; --w, ++dp, ++sp)
 125                     bbuffer[drow+dp] = (bitmap->buffer[srow+sp/8] & (0x80>>(sp%8))) ? 255:0;
 126     else
 127         for (h = bitmap->rows; h>0 && height > 0; --h, height--, drow+=width, srow+=bitmap->pitch)
 128             for (w = bwidth, sp=dp=0; w>0; --w, ++dp, ++sp)
 129                     bbuffer[drow+dp] = bitmap->buffer[srow+sp];
 130 }
 131
 132
 133 static int check_font(font_desc_t *desc, float ppem, int padding, int pic_idx,
 134                       int charset_size, FT_ULong *charset, FT_ULong *charcodes,
 135                       int unicode) {
 136     FT_Error    error;
 137     FT_Face face = desc->faces[pic_idx];
 138     int const   load_flags = FT_LOAD_DEFAULT;
 139     int         ymin = INT_MAX, ymax = INT_MIN;
 140     int         space_advance = 20;
 141     int         width, height;
 142     unsigned char *bbuffer;
 143     int i, uni_charmap = 1;
 144
 145     error = FT_Select_Charmap(face, ft_encoding_unicode);
 146 //    fprintf(stderr, "select unicode charmap: %d\n", error);
 147
 148     if (face->charmap==NULL || face->charmap->encoding!=ft_encoding_unicode) {
 149         WARNING("Unicode charmap not available for this font. Very bad!");
 150         uni_charmap = 0;
 151         error = FT_Set_Charmap(face, face->charmaps[0]);
 152         if (error) WARNING("No charmaps! Strange.");
 153     }
 154
 155     /* set size */
 156     if (FT_IS_SCALABLE(face)) {
 157         error = FT_Set_Char_Size(face, 0, floatTof266(ppem), 0, 0);
 158         if (error) WARNING("FT_Set_Char_Size failed.");
 159     } else {
 160         int j = 0;
 161         int jppem = face->available_sizes[0].height;
 162         /* find closest size */
 163         for (i = 0; i<face->num_fixed_sizes; ++i) {
 164             if (fabs(face->available_sizes[i].height - ppem) < abs(face->available_sizes[i].height - jppem)) {
 165                 j = i;
 166                 jppem = face->available_sizes[i].height;
 167             }
 168         }
 169         WARNING("Selected font is not scalable. Using ppem=%i.", face->available_sizes[j].height);
 170         error = FT_Set_Pixel_Sizes(face, face->available_sizes[j].width, face->available_sizes[j].height);
 171         if (error) WARNING("FT_Set_Pixel_Sizes failed.");
 172     }
 173
 174     if (FT_IS_FIXED_WIDTH(face))
 175         WARNING("Selected font is fixed-width.");
 176
 177     /* compute space advance */
 178     error = FT_Load_Char(face, ' ', load_flags);
 179     if (error) WARNING("spacewidth set to default.");
 180     else space_advance = f266ToInt(face->glyph->advance.x);
 181
 182     if (!desc->spacewidth) desc->spacewidth = 2*padding + space_advance;
 183     if (!desc->charspace) desc->charspace = -2*padding;
 184     if (!desc->height) desc->height = f266ToInt(face->size->metrics.height);
 185
 186
 187     for (i= 0; i<charset_size; ++i) {
 188         FT_ULong        character, code;
 189         FT_UInt         glyph_index;
 190
 191         character = charset[i];
 192         code = charcodes[i];
 193         desc->font[unicode?character:code] = pic_idx;
 194         // get glyph index
 195         if (character==0)
 196             glyph_index = 0;
 197         else {
 198             glyph_index = FT_Get_Char_Index(face, uni_charmap ? character:code);
 199             if (glyph_index==0) {
 200                 WARNING("Glyph for char 0x%02lx|U+%04lX|%c not found.", code, character,
 201                         code<' '||code>255 ? '.':(char)code);
 202                 desc->font[unicode?character:code] = -1;
 203                 continue;
 204             }
 205         }
 206         desc->glyph_index[unicode?character:code] = glyph_index;
 207     }
 208 //    fprintf(stderr, "font height: %f\n", (double)(face->bbox.yMax-face->bbox.yMin)/(double)face->units_per_EM*ppem);
 209 //    fprintf(stderr, "font width: %f\n", (double)(face->bbox.xMax-face->bbox.xMin)/(double)face->units_per_EM*ppem);
 210
 211     ymax = (double)(face->bbox.yMax)/(double)face->units_per_EM*ppem+1;
 212     ymin = (double)(face->bbox.yMin)/(double)face->units_per_EM*ppem-1;
 213
 214     width = ppem*(face->bbox.xMax-face->bbox.xMin)/face->units_per_EM+3+2*padding;
 215     if (desc->max_width < width) desc->max_width = width;
 216     width = ALIGN(width);
 217     desc->pic_b[pic_idx]->charwidth = width;
 218
 219     if (width <= 0) {
 220         mp_msg(MSGT_OSD, MSGL_ERR, "Wrong bounding box, width <= 0 !\n");
 221         return -1;
 222     }
 223
 224     if (ymax<=ymin) {
 225         mp_msg(MSGT_OSD, MSGL_ERR, "Something went wrong. Use the source!\n");
 226         return -1;
 227     }
 228
 229     height = ymax - ymin + 2*padding;
 230     if (height <= 0) {
 231         mp_msg(MSGT_OSD, MSGL_ERR, "Wrong bounding box, height <= 0 !\n");
 232         return -1;
 233     }
 234
 235     if (desc->max_height < height) desc->max_height = height;
 236     desc->pic_b[pic_idx]->charheight = height;
 237
 238 //    fprintf(stderr, "font height2: %d\n", height);
 239     desc->pic_b[pic_idx]->baseline = ymax + padding;
 240     desc->pic_b[pic_idx]->padding = padding;
 241     desc->pic_b[pic_idx]->current_alloc = 0;
 242     desc->pic_b[pic_idx]->current_count = 0;
 243
 244     bbuffer = NULL;
 245
 246     desc->pic_b[pic_idx]->w = width;
 247     desc->pic_b[pic_idx]->h = height;
 248     desc->pic_b[pic_idx]->c = colors;
 249     desc->pic_b[pic_idx]->bmp = bbuffer;
 250     desc->pic_b[pic_idx]->pen = 0;
 251     return 0;
 252 }
 253
 254 // general outline
 255 static void outline(
 256         unsigned char *s,
 257         unsigned char *t,
 258         int width,
 259         int height,
 260         int stride,
 261         unsigned char *m,
 262         int r,
 263         int mwidth,
 264         int msize) {
 265
 266     int x, y;
 267
 268     for (y = 0; y<height; y++) {
 269         for (x = 0; x<width; x++) {
 270             const int src= s[x];
 271             if(src==0) continue;
 272             {
 273                 const int x1=(x<r) ? r-x : 0;
 274                 const int y1=(y<r) ? r-y : 0;
 275                 const int x2=(x+r>=width ) ? r+width -x : 2*r+1;
 276                 const int y2=(y+r>=height) ? r+height-y : 2*r+1;
 277                 register unsigned char *dstp= t + (y1+y-r)* stride + x-r;
 278                 //register int *mp  = m +  y1     *mwidth;
 279                 register unsigned char *mp= m + msize*src + y1*mwidth;
 280                 int my;
 281
 282                 for(my= y1; my<y2; my++){
 283                     register int mx;
 284                     for(mx= x1; mx<x2; mx++){
 285                         if(dstp[mx] < mp[mx]) dstp[mx]= mp[mx];
 286                     }
 287                     dstp+=stride;
 288                     mp+=mwidth;
 289                 }
 290             }
 291         }
 292         s+= stride;
 293     }
 294 }
 295
 296
 297 // 1 pixel outline
 298 static void outline1(
 299         unsigned char *s,
 300         unsigned char *t,
 301         int width,
 302         int height,
 303         int stride) {
 304
 305     int x, y;
 306     int skip = stride-width;
 307
 308     for (x = 0; x<width; ++x, ++s, ++t) *t = *s;
 309     s += skip;
 310     t += skip;
 311     for (y = 1; y<height-1; ++y) {
 312         *t++ = *s++;
 313         for (x = 1; x<width-1; ++x, ++s, ++t) {
 314             unsigned v = (
 315                     s[-1-stride]+
 316                     s[-1+stride]+
 317                     s[+1-stride]+
 318                     s[+1+stride]
 319                 )/2 + (
 320                     s[-1]+
 321                     s[+1]+
 322                     s[-stride]+
 323                     s[+stride]+
 324                     s[0]
 325                 );
 326             *t = v>maxcolor ? maxcolor : v;
 327         }
 328         *t++ = *s++;
 329         s += skip;
 330         t += skip;
 331     }
 332     for (x = 0; x<width; ++x, ++s, ++t) *t = *s;
 333 }
 334
 335 // "0 pixel outline"
 336 static void outline0(
 337         unsigned char *s,
 338         unsigned char *t,
 339         int width,
 340         int height,
 341         int stride) {
 342     int y;
 343     for (y = 0; y<height; ++y) {
 344         memcpy(t, s, width);
 345         s += stride;
 346         t += stride;
 347     }
 348 }
 349
 350 // gaussian blur
 351 void blur(
 352         unsigned char *buffer,
 353         unsigned short *tmp2,
 354         int width,
 355         int height,
 356         int stride,
 357         int *m2,
 358         int r,
 359         int mwidth) {
 360
 361     int x, y;
 362
 363     unsigned char  *s = buffer;
 364     unsigned short *t = tmp2+1;
 365     for(y=0; y<height; y++){
 366         memset(t-1, 0, (width+1)*sizeof(short));
 367
 368         for(x=0; x<r; x++){
 369             const int src= s[x];
 370             if(src){
 371                 register unsigned short *dstp= t + x-r;
 372                 int mx;
 373                 unsigned *m3= m2 + src*mwidth;
 374                 for(mx=r-x; mx<mwidth; mx++){
 375                     dstp[mx]+= m3[mx];
 376                 }
 377             }
 378         }
 379
 380         for(; x<width-r; x++){
 381             const int src= s[x];
 382             if(src){
 383                 register unsigned short *dstp= t + x-r;
 384                 int mx;
 385                 unsigned *m3= m2 + src*mwidth;
 386                 for(mx=0; mx<mwidth; mx++){
 387                     dstp[mx]+= m3[mx];
 388                 }
 389             }
 390         }
 391
 392         for(; x<width; x++){
 393             const int src= s[x];
 394             if(src){
 395                 register unsigned short *dstp= t + x-r;
 396                 int mx;
 397                 const int x2= r+width -x;
 398                 unsigned *m3= m2 + src*mwidth;
 399                 for(mx=0; mx<x2; mx++){
 400                     dstp[mx]+= m3[mx];
 401                 }
 402             }
 403         }
 404
 405         s+= stride;
 406         t+= width + 1;
 407     }
 408
 409     t = tmp2;
 410     for(x=0; x<width; x++){
 411         for(y=0; y<r; y++){
 412             unsigned short *srcp= t + y*(width+1) + 1;
 413             int src= *srcp;
 414             if(src){
 415                 register unsigned short *dstp= srcp - 1 + width+1;
 416                 const int src2= (src + 128)>>8;
 417                 unsigned *m3= m2 + src2*mwidth;
 418
 419                 int mx;
 420                 *srcp= 128;
 421                 for(mx=r-1; mx<mwidth; mx++){
 422                     *dstp += m3[mx];
 423                     dstp+= width+1;
 424                 }
 425             }
 426         }
 427         for(; y<height-r; y++){
 428             unsigned short *srcp= t + y*(width+1) + 1;
 429             int src= *srcp;
 430             if(src){
 431                 register unsigned short *dstp= srcp - 1 - r*(width+1);
 432                 const int src2= (src + 128)>>8;
 433                 unsigned *m3= m2 + src2*mwidth;
 434
 435                 int mx;
 436                 *srcp= 128;
 437                 for(mx=0; mx<mwidth; mx++){
 438                     *dstp += m3[mx];
 439                     dstp+= width+1;
 440                 }
 441             }
 442         }
 443         for(; y<height; y++){
 444             unsigned short *srcp= t + y*(width+1) + 1;
 445             int src= *srcp;
 446             if(src){
 447                 const int y2=r+height-y;
 448                 register unsigned short *dstp= srcp - 1 - r*(width+1);
 449                 const int src2= (src + 128)>>8;
 450                 unsigned *m3= m2 + src2*mwidth;
 451
 452                 int mx;
 453                 *srcp= 128;
 454                 for(mx=0; mx<y2; mx++){
 455                     *dstp += m3[mx];
 456                     dstp+= width+1;
 457                 }
 458             }
 459         }
 460         t++;
 461     }
 462
 463     t = tmp2;
 464     s = buffer;
 465     for(y=0; y<height; y++){
 466         for(x=0; x<width; x++){
 467             s[x]= t[x]>>8;
 468         }
 469         s+= stride;
 470         t+= width + 1;
 471     }
 472 }
 473
 474 static void resample_alpha(unsigned char *abuf, unsigned char *bbuf, int width, int height, int stride, float factor)
 475 {
 476         int f=factor*256.0f;
 477         int i,j;
 478         for (i = 0; i < height; i++) {
 479             unsigned char *a = abuf+i*stride;
 480             unsigned char *b = bbuf+i*stride;
 481             for(j=0;j<width;j++,a++,b++){
 482                 int x=*a;       // alpha
 483                 int y=*b;       // bitmap
 484                 x=255-((x*f)>>8); // scale
 485                 if (x+y>255) x=255-y; // to avoid overflows
 486                 if (x<1) x=1; else if (x>=252) x=0;
 487                 *a=x;
 488             }
 489         }
 490 }
 491
 492 #define ALLOC_INCR 32
 493 void render_one_glyph(font_desc_t *desc, int c)
 494 {
 495     FT_GlyphSlot        slot;
 496     FT_UInt             glyph_index;
 497     FT_BitmapGlyph glyph;
 498     int width, height, stride, maxw, off;
 499     unsigned char *abuffer, *bbuffer;
 500
 501     int const   load_flags = FT_LOAD_DEFAULT;
 502     int         pen_xa;
 503     int font = desc->font[c];
 504     int error;
 505
 506 //    fprintf(stderr, "render_one_glyph %d\n", c);
 507
 508     if (!desc->dynamic) return;
 509     if (desc->width[c] != -1) return;
 510     if (desc->font[c] == -1) return;
 511
 512     glyph_index = desc->glyph_index[c];
 513
 514     // load glyph
 515     error = FT_Load_Glyph(desc->faces[font], glyph_index, load_flags);
 516     if (error) {
 517         WARNING("FT_Load_Glyph 0x%02x (char 0x%04x) failed.", glyph_index, c);
 518         desc->font[c] = -1;
 519         return;
 520     }
 521     slot = desc->faces[font]->glyph;
 522
 523     // render glyph
 524     if (slot->format != ft_glyph_format_bitmap) {
 525         error = FT_Render_Glyph(slot, ft_render_mode_normal);
 526         if (error) {
 527             WARNING("FT_Render_Glyph 0x%04x (char 0x%04x) failed.", glyph_index, c);
 528             desc->font[c] = -1;
 529             return;
 530         }
 531     }
 532
 533     // extract glyph image
 534     error = FT_Get_Glyph(slot, (FT_Glyph*)&glyph);
 535     if (error) {
 536         WARNING("FT_Get_Glyph 0x%04x (char 0x%04x) failed.", glyph_index, c);
 537         desc->font[c] = -1;
 538         return;
 539     }
 540
 541 //    fprintf(stderr, "glyph generated\n");
 542
 543     maxw = desc->pic_b[font]->charwidth;
 544
 545     if (glyph->bitmap.width > maxw) {
 546         fprintf(stderr, "glyph too wide!\n");
 547     }
 548
 549     // allocate new memory, if needed
 550 //    fprintf(stderr, "\n%d %d %d\n", desc->pic_b[font]->charwidth, desc->pic_b[font]->charheight, desc->pic_b[font]->current_alloc);
 551     if (desc->pic_b[font]->current_count >= desc->pic_b[font]->current_alloc) {
 552         int newsize = desc->pic_b[font]->charwidth*desc->pic_b[font]->charheight*(desc->pic_b[font]->current_alloc+ALLOC_INCR);
 553         int increment = desc->pic_b[font]->charwidth*desc->pic_b[font]->charheight*ALLOC_INCR;
 554         desc->pic_b[font]->current_alloc += ALLOC_INCR;
 555
 556 //      fprintf(stderr, "\nns = %d inc = %d\n", newsize, increment);
 557
 558         desc->pic_b[font]->bmp = realloc(desc->pic_b[font]->bmp, newsize);
 559         desc->pic_a[font]->bmp = realloc(desc->pic_a[font]->bmp, newsize);
 560
 561         off = desc->pic_b[font]->current_count*desc->pic_b[font]->charwidth*desc->pic_b[font]->charheight;
 562         memset(desc->pic_b[font]->bmp+off, 0, increment);
 563         memset(desc->pic_a[font]->bmp+off, 0, increment);
 564     }
 565
 566     abuffer = desc->pic_a[font]->bmp;
 567     bbuffer = desc->pic_b[font]->bmp;
 568
 569     off = desc->pic_b[font]->current_count*desc->pic_b[font]->charwidth*desc->pic_b[font]->charheight;
 570
 571     paste_bitmap(bbuffer+off,
 572                  &glyph->bitmap,
 573                  desc->pic_b[font]->padding + glyph->left,
 574                  desc->pic_b[font]->baseline - glyph->top,
 575                  desc->pic_b[font]->charwidth, desc->pic_b[font]->charheight,
 576                  glyph->bitmap.width <= maxw ? glyph->bitmap.width : maxw);
 577
 578 //    fprintf(stderr, "glyph pasted\n");
 579     FT_Done_Glyph((FT_Glyph)glyph);
 580
 581     /* advance pen */
 582     pen_xa = f266ToInt(slot->advance.x) + 2*desc->pic_b[font]->padding;
 583     if (pen_xa > maxw) pen_xa = maxw;
 584
 585     desc->start[c] = off;
 586     width = desc->width[c] = pen_xa;
 587     height = desc->pic_b[font]->charheight;
 588     stride = desc->pic_b[font]->w;
 589
 590     if (desc->tables.o_r == 0) {
 591         outline0(bbuffer+off, abuffer+off, width, height, stride);
 592     } else if (desc->tables.o_r == 1) {
 593         outline1(bbuffer+off, abuffer+off, width, height, stride);
 594     } else {
 595         outline(bbuffer+off, abuffer+off, width, height, stride,
 596                 desc->tables.omt, desc->tables.o_r, desc->tables.o_w,
 597                 desc->tables.o_size);
 598     }
 599 //    fprintf(stderr, "fg: outline t = %f\n", GetTimer()-t);
 600
 601     if (desc->tables.g_r) {
 602         blur(abuffer+off, desc->tables.tmp, width, height, stride,
 603              desc->tables.gt2, desc->tables.g_r,
 604              desc->tables.g_w);
 605 //      fprintf(stderr, "fg: blur t = %f\n", GetTimer()-t);
 606     }
 607
 608     resample_alpha(abuffer+off, bbuffer+off, width, height, stride, font_factor);
 609
 610     desc->pic_b[font]->current_count++;
 611 }
 612
 613
 614 static int prepare_font(font_desc_t *desc, FT_Face face, float ppem, int pic_idx,
 615                         int charset_size, FT_ULong *charset, FT_ULong *charcodes, int unicode,
 616                         double thickness, double radius)
 617 {
 618     int i, err;
 619     int padding = ceil(radius) + ceil(thickness);
 620
 621     desc->faces[pic_idx] = face;
 622
 623     desc->pic_a[pic_idx] = malloc(sizeof(raw_file));
 624     if (!desc->pic_a[pic_idx]) return -1;
 625     desc->pic_b[pic_idx] = malloc(sizeof(raw_file));
 626     if (!desc->pic_b[pic_idx]) return -1;
 627
 628     desc->pic_a[pic_idx]->bmp = NULL;
 629     desc->pic_a[pic_idx]->pal = NULL;
 630     desc->pic_b[pic_idx]->bmp = NULL;
 631     desc->pic_b[pic_idx]->pal = NULL;
 632
 633     desc->pic_a[pic_idx]->pal = malloc(sizeof(unsigned char)*256*3);
 634     if (!desc->pic_a[pic_idx]->pal) return -1;
 635     for (i = 0; i<768; ++i) desc->pic_a[pic_idx]->pal[i] = i/3;
 636
 637     desc->pic_b[pic_idx]->pal = malloc(sizeof(unsigned char)*256*3);
 638     if (!desc->pic_b[pic_idx]->pal) return -1;
 639     for (i = 0; i<768; ++i) desc->pic_b[pic_idx]->pal[i] = i/3;
 640
 641 //    ttime = GetTimer();
 642     err = check_font(desc, ppem, padding, pic_idx, charset_size, charset, charcodes, unicode);
 643 //    ttime=GetTimer()-ttime;
 644 //    printf("render:   %7f us\n",ttime);
 645     if (err) return -1;
 646 //    fprintf(stderr, "fg: render t = %f\n", GetTimer()-t);
 647
 648     desc->pic_a[pic_idx]->w = desc->pic_b[pic_idx]->w;
 649     desc->pic_a[pic_idx]->h = desc->pic_b[pic_idx]->h;
 650     desc->pic_a[pic_idx]->c = colors;
 651
 652     desc->pic_a[pic_idx]->bmp = NULL;
 653
 654 //    fprintf(stderr, "fg: w = %d, h = %d\n", desc->pic_a[pic_idx]->w, desc->pic_a[pic_idx]->h);
 655     return 0;
 656
 657 }
 658
 659 static int generate_tables(font_desc_t *desc, double thickness, double radius)
 660 {
 661     int width = desc->max_height;
 662     int height = desc->max_width;
 663
 664     double A = log(1.0/base)/(radius*radius*2);
 665     int mx, my, i;
 666     double volume_diff, volume_factor = 0;
 667     unsigned char *omtp;
 668
 669     desc->tables.g_r = ceil(radius);
 670     desc->tables.o_r = ceil(thickness);
 671     desc->tables.g_w = 2*desc->tables.g_r+1;
 672     desc->tables.o_w = 2*desc->tables.o_r+1;
 673     desc->tables.o_size = desc->tables.o_w * desc->tables.o_w;
 674
 675 //    fprintf(stderr, "o_r = %d\n", desc->tables.o_r);
 676
 677     if (desc->tables.g_r) {
 678         desc->tables.g = malloc(desc->tables.g_w * sizeof(unsigned));
 679         desc->tables.gt2 = malloc(256 * desc->tables.g_w * sizeof(unsigned));
 680         if (desc->tables.g==NULL || desc->tables.gt2==NULL) {
 681             return -1;
 682         }
 683     }
 684     desc->tables.om = malloc(desc->tables.o_w*desc->tables.o_w * sizeof(unsigned));
 685     desc->tables.omt = malloc(desc->tables.o_size*256);
 686
 687     omtp = desc->tables.omt;
 688     desc->tables.tmp = malloc((width+1)*height*sizeof(short));
 689
 690     if (desc->tables.om==NULL || desc->tables.omt==NULL || desc->tables.tmp==NULL) {
 691         return -1;
 692     };
 693
 694     if (desc->tables.g_r) {
 695         // gaussian curve with volume = 256
 696         for (volume_diff=10000000; volume_diff>0.0000001; volume_diff*=0.5){
 697             volume_factor+= volume_diff;
 698             desc->tables.volume=0;
 699             for (i = 0; i<desc->tables.g_w; ++i) {
 700                 desc->tables.g[i] = (unsigned)(exp(A * (i-desc->tables.g_r)*(i-desc->tables.g_r)) * volume_factor + .5);
 701                 desc->tables.volume+= desc->tables.g[i];
 702             }
 703             if(desc->tables.volume>256) volume_factor-= volume_diff;
 704         }
 705         desc->tables.volume=0;
 706         for (i = 0; i<desc->tables.g_w; ++i) {
 707             desc->tables.g[i] = (unsigned)(exp(A * (i-desc->tables.g_r)*(i-desc->tables.g_r)) * volume_factor + .5);
 708             desc->tables.volume+= desc->tables.g[i];
 709         }
 710
 711         // gauss table:
 712         for(mx=0;mx<desc->tables.g_w;mx++){
 713             for(i=0;i<256;i++){
 714                 desc->tables.gt2[mx+i*desc->tables.g_w] = i*desc->tables.g[mx];
 715             }
 716         }
 717     }
 718
 719     /* outline matrix */
 720     for (my = 0; my<desc->tables.o_w; ++my) {
 721         for (mx = 0; mx<desc->tables.o_w; ++mx) {
 722             // antialiased circle would be perfect here, but this one is good enough
 723             double d = thickness + 1 - sqrt((mx-desc->tables.o_r)*(mx-desc->tables.o_r)+(my-desc->tables.o_r)*(my-desc->tables.o_r));
 724             desc->tables.om[mx+my*desc->tables.o_w] = d>=1 ? base : d<=0 ? 0 : (d*base + .5);
 725         }
 726     }
 727
 728     // outline table:
 729     for(i=0;i<256;i++){
 730         for(mx=0;mx<desc->tables.o_size;mx++) *(omtp++) = (i*desc->tables.om[mx] + (base/2))/base;
 731     }
 732
 733     return 0;
 734 }
 735
 736 #ifdef CONFIG_ICONV
 737 /* decode from 'encoding' to unicode */
 738 static FT_ULong decode_char(iconv_t *cd, char c) {
 739     FT_ULong o;
 740     char *inbuf = &c;
 741     char *outbuf = (char*)&o;
 742     size_t inbytesleft = 1;
 743     size_t outbytesleft = sizeof(FT_ULong);
 744
 745     iconv(*cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
 746
 747     /* convert unicode BigEndian -> MachineEndian */
 748     o = be2me_32(o);
 749
 750     // if (count==-1) o = 0; // not OK, at least my iconv() returns E2BIG for all
 751     if (outbytesleft!=0) o = 0;
 752
 753     /* we don't want control characters */
 754     if (o>=0x7f && o<0xa0) o = 0;
 755     return o;
 756 }
 757
 758 static int prepare_charset(char *charmap, char *encoding, FT_ULong *charset, FT_ULong *charcodes) {
 759     FT_ULong i;
 760     int count = 0;
 761     int charset_size;
 762     iconv_t cd;
 763
 764     // check if ucs-4 is available
 765     cd = iconv_open(charmap, charmap);
 766     if (cd==(iconv_t)-1) {
 767         mp_msg(MSGT_OSD, MSGL_ERR, "iconv doesn't know %s encoding. Use the source!\n", charmap);
 768         return -1;
 769     }
 770
 771     iconv_close(cd);
 772
 773     cd = iconv_open(charmap, encoding);
 774     if (cd==(iconv_t)-1) {
 775         mp_msg(MSGT_OSD, MSGL_ERR, "Unsupported encoding `%s', use iconv --list to list character sets known on your system.\n", encoding);
 776         return -1;
 777     }
 778
 779     charset_size = 256 - first_char;
 780     for (i = 0; i<charset_size; ++i) {
 781         charcodes[count] = i+first_char;
 782         charset[count] = decode_char(&cd, i+first_char);
 783         if (charset[count]!=0) ++count;
 784     }
 785     charcodes[count] = charset[count] = 0; ++count;
 786     charset_size = count;
 787
 788     iconv_close(cd);
 789     if (charset_size==0) {
 790         mp_msg(MSGT_OSD, MSGL_ERR, "No characters to render!\n");
 791         return -1;
 792     }
 793
 794     return charset_size;
 795 }
 796
 797 static int prepare_charset_unicode(FT_Face face, FT_ULong *charset, FT_ULong *charcodes) {
 798 #ifdef HAVE_FREETYPE21
 799     FT_ULong  charcode;
 800 #else
 801     int j;
 802 #endif
 803     FT_UInt   gindex;
 804     int i;
 805
 806     if (face->charmap==NULL || face->charmap->encoding!=ft_encoding_unicode) {
 807         WARNING("Unicode charmap not available for this font. Very bad!");
 808         return -1;
 809     }
 810 #ifdef HAVE_FREETYPE21
 811     i = 0;
 812     charcode = FT_Get_First_Char( face, &gindex );
 813     while (gindex != 0) {
 814         if (charcode < 65536 && charcode >= 33) { // sanity check
 815             charset[i] = charcode;
 816             charcodes[i] = 0;
 817             i++;
 818         }
 819         charcode = FT_Get_Next_Char( face, charcode, &gindex );
 820     }
 821 #else
 822     // for FT < 2.1 we have to use brute force enumeration
 823     i = 0;
 824     for (j = 33; j < 65536; j++) {
 825         gindex = FT_Get_Char_Index(face, j);
 826         if (gindex > 0) {
 827             charset[i] = j;
 828             charcodes[i] = 0;
 829             i++;
 830         }
 831     }
 832 #endif
 833     mp_msg(MSGT_OSD, MSGL_V, "Unicode font: %d glyphs.\n", i);
 834
 835     return i;
 836 }
 837 #endif
 838
 839 static font_desc_t* init_font_desc(void)
 840 {
 841     font_desc_t *desc;
 842
 843     desc = calloc(1, sizeof(*desc));
 844     if(!desc) return NULL;
 845
 846     desc->dynamic = 1;
 847
 848     /* setup sane defaults */
 849     desc->freetype = 1;
 850
 851     memset(desc->start, 0xff, sizeof(desc->start));
 852     memset(desc->width, 0xff, sizeof(desc->width));
 853     memset(desc->font,  0xff, sizeof(desc->font));
 854
 855     return desc;
 856 }
 857
 858 void free_font_desc(font_desc_t *desc)
 859 {
 860     int i;
 861
 862     if (!desc) return;
 863
 864 //    if (!desc->dynamic) return; // some vo_aa crap, better leaking than crashing
 865
 866     free(desc->name);
 867     free(desc->fpath);
 868
 869     for(i = 0; i < 16; i++) {
 870         if (desc->pic_a[i]) {
 871             free(desc->pic_a[i]->bmp);
 872             free(desc->pic_a[i]->pal);
 873             free(desc->pic_a[i]);
 874         }
 875         if (desc->pic_b[i]) {
 876             free(desc->pic_b[i]->bmp);
 877             free(desc->pic_b[i]->pal);
 878             free(desc->pic_b[i]);
 879         }
 880     }
 881
 882     free(desc->tables.g);
 883     free(desc->tables.gt2);
 884     free(desc->tables.om);
 885     free(desc->tables.omt);
 886     free(desc->tables.tmp);
 887
 888     for(i = 0; i < desc->face_cnt; i++) {
 889         FT_Done_Face(desc->faces[i]);
 890     }
 891
 892     free(desc);
 893 }
 894
 895 static int load_sub_face(const char *name, int face_index, FT_Face *face)
 896 {
 897     int err = -1;
 898
 899     if (name) err = FT_New_Face(library, name, face_index, face);
 900
 901     if (err) {
 902         char *font_file = get_path("subfont.ttf");
 903         err = FT_New_Face(library, font_file, 0, face);
 904         free(font_file);
 905         if (err) {
 906             err = FT_New_Face(library, MPLAYER_DATADIR "/subfont.ttf", 0, face);
 907             if (err) {
 908                 mp_tmsg(MSGT_OSD, MSGL_ERR, "New_Face failed. Maybe the font path is wrong.\nPlease supply the text font file (~/.mplayer/subfont.ttf).\n");
 909                 return -1;
 910             }
 911         }
 912     }
 913     return err;
 914 }
 915
 916 static int load_osd_face(FT_Face *face)
 917 {
 918     if ( FT_New_Memory_Face(library, osd_font_pfb, sizeof(osd_font_pfb), 0, face) ) {
 919         mp_tmsg(MSGT_OSD, MSGL_ERR, "New_Memory_Face failed..\n");
 920         return -1;
 921     }
 922     return 0;
 923 }
 924
 925 int kerning(font_desc_t *desc, int prevc, int c)
 926 {
 927     FT_Vector kern;
 928
 929     if (!desc->dynamic) return 0;
 930     if (prevc < 0 || c < 0) return 0;
 931     if (desc->font[prevc] != desc->font[c]) return 0;
 932     if (desc->font[prevc] == -1 || desc->font[c] == -1) return 0;
 933     FT_Get_Kerning(desc->faces[desc->font[c]],
 934                    desc->glyph_index[prevc], desc->glyph_index[c],
 935                    ft_kerning_default, &kern);
 936
 937 //    fprintf(stderr, "kern: %c %c %d\n", prevc, c, f266ToInt(kern.x));
 938
 939     return f266ToInt(kern.x);
 940 }
 941
 942 font_desc_t* read_font_desc_ft(const char *fname, int face_index, int movie_width, int movie_height, float font_scale_factor)
 943 {
 944     font_desc_t *desc = NULL;
 945
 946     FT_Face face;
 947
 948     FT_ULong *my_charset = malloc(MAX_CHARSET_SIZE * sizeof(FT_ULong)); /* characters we want to render; Unicode */
 949     FT_ULong *my_charcodes = malloc(MAX_CHARSET_SIZE * sizeof(FT_ULong)); /* character codes in 'encoding' */
 950
 951     char *charmap = "ucs-4";
 952     int err;
 953     int charset_size;
 954     int i, j;
 955     int unicode;
 956
 957     float movie_size;
 958
 959     float subtitle_font_ppem;
 960     float osd_font_ppem;
 961
 962     if (my_charset == NULL || my_charcodes == NULL) {
 963         mp_msg(MSGT_OSD, MSGL_ERR, "subtitle font: malloc failed.\n");
 964         goto err_out;
 965     }
 966
 967     switch (subtitle_autoscale) {
 968     case 1:
 969         movie_size = movie_height;
 970         break;
 971     case 2:
 972         movie_size = movie_width;
 973         break;
 974     case 3:
 975         movie_size = sqrt(movie_height*movie_height+movie_width*movie_width);
 976         break;
 977     default:
 978         movie_size = 100;
 979         break;
 980     }
 981
 982     subtitle_font_ppem = movie_size*font_scale_factor/100.0;
 983     osd_font_ppem = movie_size*(font_scale_factor+1)/100.0;
 984
 985     if (subtitle_font_ppem < 5) subtitle_font_ppem = 5;
 986     if (osd_font_ppem < 5) osd_font_ppem = 5;
 987
 988     if (subtitle_font_ppem > 128) subtitle_font_ppem = 128;
 989     if (osd_font_ppem > 128) osd_font_ppem = 128;
 990
 991     if ((subtitle_font_encoding == NULL)
 992         || (strcasecmp(subtitle_font_encoding, "unicode") == 0)) {
 993         unicode = 1;
 994     } else {
 995         unicode = 0;
 996     }
 997
 998     desc = init_font_desc();
 999     if(!desc) goto err_out;
1000
1001 //    t=GetTimer();
1002
1003     /* generate the subtitle font */
1004     err = load_sub_face(fname, face_index, &face);
1005     if (err) {
1006         mp_tmsg(MSGT_OSD, MSGL_WARN, "subtitle font: load_sub_face failed.\n");
1007         goto gen_osd;
1008     }
1009     desc->face_cnt++;
1010
1011 #ifdef CONFIG_ICONV
1012     if (unicode) {
1013         charset_size = prepare_charset_unicode(face, my_charset, my_charcodes);
1014     } else {
1015         if (subtitle_font_encoding) {
1016             charset_size = prepare_charset(charmap, subtitle_font_encoding, my_charset, my_charcodes);
1017         } else {
1018             charset_size = prepare_charset(charmap, "iso-8859-1", my_charset, my_charcodes);
1019         }
1020     }
1021
1022     if (charset_size < 0) {
1023         mp_tmsg(MSGT_OSD, MSGL_ERR, "subtitle font: prepare_charset failed.\n");
1024         goto err_out;
1025     }
1026 #else
1027     goto err_out;
1028 #endif
1029
1030 //    fprintf(stderr, "fg: prepare t = %f\n", GetTimer()-t);
1031
1032     err = prepare_font(desc, face, subtitle_font_ppem, desc->face_cnt-1,
1033                        charset_size, my_charset, my_charcodes, unicode,
1034                        subtitle_font_thickness, subtitle_font_radius);
1035
1036     if (err) {
1037         mp_tmsg(MSGT_OSD, MSGL_ERR, "Cannot prepare subtitle font.\n");
1038         goto err_out;
1039     }
1040
1041 gen_osd:
1042
1043     /* generate the OSD font */
1044     err = load_osd_face(&face);
1045     if (err) {
1046         goto err_out;
1047     }
1048     desc->face_cnt++;
1049
1050     err = prepare_font(desc, face, osd_font_ppem, desc->face_cnt-1,
1051                        OSD_CHARSET_SIZE, osd_charset, osd_charcodes, 0,
1052                        subtitle_font_thickness, subtitle_font_radius);
1053
1054     if (err) {
1055         mp_tmsg(MSGT_OSD, MSGL_ERR, "Cannot prepare OSD font.\n");
1056         goto err_out;
1057     }
1058
1059     err = generate_tables(desc, subtitle_font_thickness, subtitle_font_radius);
1060
1061     if (err) {
1062         mp_tmsg(MSGT_OSD, MSGL_ERR, "Cannot generate tables.\n");
1063         goto err_out;
1064     }
1065
1066     // final cleanup
1067     desc->font[' ']=-1;
1068     desc->width[' ']=desc->spacewidth;
1069
1070     j = '_';
1071     if (desc->font[j] < 0) j = '?';
1072     if (desc->font[j] < 0) j = ' ';
1073     render_one_glyph(desc, j);
1074     for(i = 0; i < 65536; i++) {
1075         if (desc->font[i] < 0 && i != ' ') {
1076             desc->start[i] = desc->start[j];
1077             desc->width[i] = desc->width[j];
1078             desc->font[i] = desc->font[j];
1079         }
1080     }
1081     free(my_charset);
1082     free(my_charcodes);
1083     return desc;
1084
1085 err_out:
1086     if (desc)
1087       free_font_desc(desc);
1088     free(my_charset);
1089     free(my_charcodes);
1090     return NULL;
1091 }
1092
1093 int init_freetype(void)
1094 {
1095     int err;
1096
1097     /* initialize freetype */
1098     err = FT_Init_FreeType(&library);
1099     if (err) {
1100         mp_msg(MSGT_OSD, MSGL_ERR, "Init_FreeType failed.\n");
1101         return -1;
1102     }
1103     mp_msg(MSGT_OSD, MSGL_V, "init_freetype\n");
1104     using_freetype = 1;
1105     return 0;
1106 }
1107
1108 int done_freetype(void)
1109 {
1110     int err;
1111
1112     if (!using_freetype)
1113         return 0;
1114
1115     err = FT_Done_FreeType(library);
1116     if (err) {
1117         mp_tmsg(MSGT_OSD, MSGL_ERR, "FT_Done_FreeType failed.\n");
1118         return -1;
1119     }
1120
1121     return 0;
1122 }
1123
1124 void load_font_ft(int width, int height, font_desc_t** fontp, const char *font_name, float font_scale_factor)
1125 {
1126 #ifdef CONFIG_FONTCONFIG
1127     FcPattern *fc_pattern;
1128     FcPattern *fc_pattern2;
1129     FcChar8 *s;
1130     int face_index;
1131     FcBool scalable;
1132     FcResult result;
1133 #endif
1134     font_desc_t *vo_font = *fontp;
1135     vo_image_width = width;
1136     vo_image_height = height;
1137
1138     // protection against vo_aa font hacks
1139     if (vo_font && !vo_font->dynamic) return;
1140
1141     if (vo_font) free_font_desc(vo_font);
1142
1143 #ifdef CONFIG_FONTCONFIG
1144     if (font_fontconfig > 0)
1145     {
1146         FcInit();
1147         fc_pattern = FcNameParse(font_name ? font_name : "sans-serif");
1148         FcConfigSubstitute(0, fc_pattern, FcMatchPattern);
1149         FcDefaultSubstitute(fc_pattern);
1150         fc_pattern2 = fc_pattern;
1151         fc_pattern = FcFontMatch(0, fc_pattern, &result);
1152         if (fc_pattern) {
1153             FcPatternDestroy(fc_pattern2);
1154             FcPatternGetBool(fc_pattern, FC_SCALABLE, 0, &scalable);
1155             if (scalable != FcTrue) {
1156                 FcPatternDestroy(fc_pattern);
1157                 fc_pattern = FcNameParse("sans-serif");
1158                 FcConfigSubstitute(0, fc_pattern, FcMatchPattern);
1159                 FcDefaultSubstitute(fc_pattern);
1160                 fc_pattern2 = fc_pattern;
1161                 fc_pattern = FcFontMatch(0, fc_pattern, 0);
1162                 FcPatternDestroy(fc_pattern2);
1163             }
1164             // s doesn't need to be freed according to fontconfig docs
1165             FcPatternGetString(fc_pattern, FC_FILE, 0, &s);
1166             FcPatternGetInteger(fc_pattern, FC_INDEX, 0, &face_index);
1167             *fontp=read_font_desc_ft(s, face_index, width, height, font_scale_factor);
1168             FcPatternDestroy(fc_pattern);
1169             return;
1170         }
1171         mp_tmsg(MSGT_OSD, MSGL_ERR, "Fontconfig failed to select a font. "
1172                 "Trying without fontconfig...\n");
1173     }
1174 #endif
1175     *fontp=read_font_desc_ft(font_name, 0, width, height, font_scale_factor);
1176 }