libass/ass_bitmap.h

   1 // -*- c-basic-offset: 8; indent-tabs-mode: t -*-
   2 // vim:ts=8:sw=8:noet:ai:
   3 /*
   4  * Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
   5  *
   6  * This file is part of libass.
   7  *
   8  * libass is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * libass is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with libass; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #ifndef LIBASS_BITMAP_H
  24 #define LIBASS_BITMAP_H
  25
  26 #include <ft2build.h>
  27 #include FT_GLYPH_H
  28
  29 typedef struct ass_synth_priv_s ass_synth_priv_t;
  30
  31 ass_synth_priv_t* ass_synth_init(double);
  32 void ass_synth_done(ass_synth_priv_t* priv);
  33
  34 typedef struct bitmap_s {
  35         int left, top;
  36         int w, h; // width, height
  37         unsigned char* buffer; // w x h buffer
  38 } bitmap_t;
  39
  40 /**
  41  * \brief perform glyph rendering
  42  * \param glyph original glyph
  43  * \param outline_glyph "border" glyph, produced from original by FreeType's glyph stroker
  44  * \param bm_g out: pointer to the bitmap of original glyph is returned here
  45  * \param bm_o out: pointer to the bitmap of outline (border) glyph is returned here
  46  * \param bm_g out: pointer to the bitmap of glyph shadow is returned here
  47  * \param be 1 = produces blurred bitmaps, 0 = normal bitmaps
  48  */
  49 int glyph_to_bitmap(ass_synth_priv_t* priv_blur, FT_Glyph glyph, FT_Glyph outline_glyph, bitmap_t** bm_g, bitmap_t** bm_o, bitmap_t** bm_s, int be, double blur_radius);
  50
  51 void ass_free_bitmap(bitmap_t* bm);
  52
  53 #endif /* LIBASS_BITMAP_H */