diff options
Diffstat (limited to 'libass/ass_font.c')
| -rw-r--r-- | libass/ass_font.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/libass/ass_font.c b/libass/ass_font.c new file mode 100644 index 0000000000..5778935d6b --- /dev/null +++ b/libass/ass_font.c @@ -0,0 +1,139 @@ +// -*- c-basic-offset: 8; indent-tabs-mode: t -*- +// vim:ts=8:sw=8:noet:ai: +/* + Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#include "config.h" + +#include <inttypes.h> +#include <ft2build.h> +#include FT_FREETYPE_H +#include FT_SYNTHESIS_H +#include FT_GLYPH_H + +#include "ass_font.h" +#include "ass_fontconfig.h" +#include "mputils.h" + +extern int no_more_font_messages; + +/** + * Select Microfost Unicode CharMap, if the font has one. + * Otherwise, let FreeType decide. + */ +static void charmap_magic(FT_Face face) +{ + int i; + for (i = 0; i < face->num_charmaps; ++i) { + FT_CharMap cmap = face->charmaps[i]; + unsigned pid = cmap->platform_id; + unsigned eid = cmap->encoding_id; + if (pid == 3 /*microsoft*/ && (eid == 1 /*unicode bmp*/ || eid == 10 /*full unicode*/)) { + FT_Set_Charmap(face, cmap); + break; + } + } +} + +int ass_font_init(FT_Library ftlibrary, void* fc_priv, ass_font_t* font, ass_font_desc_t* desc) +{ + char* path; + int index; + FT_Face face; + int error; + + path = fontconfig_select(fc_priv, desc->family, desc->bold, desc->italic, &index); + + error = FT_New_Face(ftlibrary, path, index, &face); + if (error) { + if (!no_more_font_messages) + mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorOpeningFont, path, index); + no_more_font_messages = 1; + return 1; + } + + charmap_magic(face); + + font->path = strdup(path); + font->index = index; + font->face = face; + font->desc.family = strdup(desc->family); + font->desc.bold = desc->bold; + font->desc.italic = desc->italic; + + font->m.xx = font->m.yy = (FT_Fixed)0x10000L; + font->m.xy = font->m.yy = 0; + font->v.x = font->v.y = 0; + + return 0; +} + +void ass_font_set_transform(ass_font_t* font, FT_Matrix* m, FT_Vector* v) +{ + font->m.xx = m->xx; + font->m.xy = m->xy; + font->m.yx = m->yx; + font->m.yy = m->yy; + font->v.x = v->x; + font->v.y = v->y; + FT_Set_Transform(font->face, &font->m, &font->v); +} + +void ass_font_set_size(ass_font_t* font, int size) +{ + font->size = size; + FT_Set_Pixel_Sizes(font->face, 0, size); +} + +FT_Glyph ass_font_get_glyph(void* fontconfig_priv, ass_font_t* font, uint32_t ch) +{ + int error; + int index; + FT_Glyph glyph; + + index = FT_Get_Char_Index(font->face, ch); + error = FT_Load_Glyph(font->face, index, FT_LOAD_NO_BITMAP ); + if (error) { + mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorLoadingGlyph); + return 0; + } + +#if (FREETYPE_MAJOR > 2) || \ + ((FREETYPE_MAJOR == 2) && (FREETYPE_MINOR >= 2)) || \ + ((FREETYPE_MAJOR == 2) && (FREETYPE_MINOR == 1) && (FREETYPE_PATCH >= 10)) +// FreeType >= 2.1.10 required + if (!(font->face->style_flags & FT_STYLE_FLAG_ITALIC) && + (font->desc.italic > 55)) { + FT_GlyphSlot_Oblique(font->face->glyph); + } +#endif + error = FT_Get_Glyph(font->face->glyph, &glyph); + if (error) { + mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorLoadingGlyph); + return 0; + } + + return glyph; +} + +void ass_font_free(ass_font_t* font) +{ + if (font->face) FT_Done_Face(font->face); + if (font->path) free(font->path); + if (font->desc.family) free(font->desc.family); +} |