mirror of https://github.com/mpv-player/mpv
485 lines
13 KiB
C
485 lines
13 KiB
C
// -*- c-basic-offset: 8; indent-tabs-mode: t -*-
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// vim:ts=8:sw=8:noet:ai:
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/*
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Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <assert.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <inttypes.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include "mputils.h"
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#include "ass.h"
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#include "ass_library.h"
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#include "ass_fontconfig.h"
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#ifdef HAVE_FONTCONFIG
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#include <fontconfig/fontconfig.h>
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#include <fontconfig/fcfreetype.h>
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#endif
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struct fc_instance_s {
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#ifdef HAVE_FONTCONFIG
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FcConfig* config;
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#endif
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char* family_default;
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char* path_default;
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int index_default;
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};
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#ifdef HAVE_FONTCONFIG
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/**
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* \brief Low-level font selection.
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* \param priv private data
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* \param family font family
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* \param bold font weight value
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* \param italic font slant value
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* \param index out: font index inside a file
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* \param code: the character that should be present in the font, can be 0
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* \return font file path
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*/
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static char* _select_font(fc_instance_t* priv, const char* family, unsigned bold, unsigned italic, int* index,
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uint32_t code)
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{
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FcBool rc;
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FcResult result;
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FcPattern *pat = 0, *rpat;
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int r_index, r_slant, r_weight;
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FcChar8 *r_family, *r_style, *r_file, *r_fullname;
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FcBool r_outline, r_embolden;
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FcCharSet* r_charset;
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FcFontSet* fset = 0;
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int curf;
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char* retval = 0;
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int family_cnt;
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*index = 0;
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pat = FcPatternCreate();
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if (!pat)
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goto error;
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FcPatternAddString(pat, FC_FAMILY, (const FcChar8*)family);
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// In SSA/ASS fonts are sometimes referenced by their "full name",
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// which is usually a concatenation of family name and font
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// style (ex. Ottawa Bold). Full name is available from
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// FontConfig pattern element FC_FULLNAME, but it is never
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// used for font matching.
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// Therefore, I'm removing words from the end of the name one
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// by one, and adding shortened names to the pattern. It seems
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// that the first value (full name in this case) has
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// precedence in matching.
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// An alternative approach could be to reimplement FcFontSort
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// using FC_FULLNAME instead of FC_FAMILY.
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family_cnt = 1;
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if (strchr(family, ' ')) {
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char *p, *s = strdup(family);
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while (p = strrchr(s, ' ')) {
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*p = '\0';
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FcPatternAddString(pat, FC_FAMILY, (const FcChar8*)s);
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++ family_cnt;
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}
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free(s);
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}
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FcPatternAddBool(pat, FC_OUTLINE, FcTrue);
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FcPatternAddInteger(pat, FC_SLANT, italic);
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FcPatternAddInteger(pat, FC_WEIGHT, bold);
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FcDefaultSubstitute(pat);
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rc = FcConfigSubstitute(priv->config, pat, FcMatchPattern);
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if (!rc)
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goto error;
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fset = FcFontSort(priv->config, pat, FcTrue, NULL, &result);
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for (curf = 0; curf < fset->nfont; ++curf) {
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FcPattern* curp = fset->fonts[curf];
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result = FcPatternGetBool(curp, FC_OUTLINE, 0, &r_outline);
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if (result != FcResultMatch)
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continue;
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if (r_outline != FcTrue)
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continue;
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if (!code)
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break;
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result = FcPatternGetCharSet(curp, FC_CHARSET, 0, &r_charset);
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if (result != FcResultMatch)
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continue;
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if (FcCharSetHasChar(r_charset, code))
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break;
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}
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if (curf >= fset->nfont)
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goto error;
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// Remove all extra family names from original pattern.
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// After this, FcFontRenderPrepare will select the most relevant family
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// name in case there are more than one of them.
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for (; family_cnt > 1; --family_cnt)
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FcPatternRemove(pat, FC_FAMILY, family_cnt - 1);
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rpat = FcFontRenderPrepare(priv->config, pat, fset->fonts[curf]);
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if (!rpat)
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goto error;
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result = FcPatternGetInteger(rpat, FC_INDEX, 0, &r_index);
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if (result != FcResultMatch)
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goto error;
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*index = r_index;
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result = FcPatternGetString(rpat, FC_FILE, 0, &r_file);
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if (result != FcResultMatch)
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goto error;
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retval = strdup((const char*)r_file);
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result = FcPatternGetString(rpat, FC_FAMILY, 0, &r_family);
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if (result != FcResultMatch)
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r_family = NULL;
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result = FcPatternGetString(rpat, FC_FULLNAME, 0, &r_fullname);
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if (result != FcResultMatch)
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r_fullname = NULL;
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if (!(r_family && strcasecmp((const char*)r_family, family) == 0) &&
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!(r_fullname && strcasecmp((const char*)r_fullname, family) == 0))
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_SelectedFontFamilyIsNotTheRequestedOne,
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(const char*)(r_fullname ? r_fullname : r_family), family);
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result = FcPatternGetString(rpat, FC_STYLE, 0, &r_style);
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if (result != FcResultMatch)
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r_style = NULL;
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result = FcPatternGetInteger(rpat, FC_SLANT, 0, &r_slant);
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if (result != FcResultMatch)
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r_slant = 0;
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result = FcPatternGetInteger(rpat, FC_WEIGHT, 0, &r_weight);
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if (result != FcResultMatch)
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r_weight = 0;
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result = FcPatternGetBool(rpat, FC_EMBOLDEN, 0, &r_embolden);
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if (result != FcResultMatch)
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r_embolden = 0;
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mp_msg(MSGT_ASS, MSGL_V, "[ass] Font info: family '%s', style '%s', fullname '%s',"
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" slant %d, weight %d%s\n",
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(const char*)r_family, (const char*)r_style, (const char*)r_fullname,
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r_slant, r_weight, r_embolden ? ", embolden" : "");
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error:
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if (pat) FcPatternDestroy(pat);
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if (rpat) FcPatternDestroy(rpat);
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if (fset) FcFontSetDestroy(fset);
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return retval;
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}
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/**
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* \brief Find a font. Use default family or path if necessary.
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* \param priv_ private data
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* \param family font family
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* \param bold font weight value
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* \param italic font slant value
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* \param index out: font index inside a file
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* \param code: the character that should be present in the font, can be 0
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* \return font file path
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*/
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char* fontconfig_select(fc_instance_t* priv, const char* family, unsigned bold, unsigned italic, int* index,
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uint32_t code)
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{
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char* res = 0;
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if (!priv->config) {
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*index = priv->index_default;
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return priv->path_default;
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}
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if (family && *family)
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res = _select_font(priv, family, bold, italic, index, code);
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if (!res && priv->family_default) {
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res = _select_font(priv, priv->family_default, bold, italic, index, code);
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if (res)
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_UsingDefaultFontFamily,
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family, bold, italic, res, *index);
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}
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if (!res && priv->path_default) {
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res = priv->path_default;
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*index = priv->index_default;
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_UsingDefaultFont,
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family, bold, italic, res, *index);
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}
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if (!res) {
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res = _select_font(priv, "Arial", bold, italic, index, code);
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if (res)
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_UsingArialFontFamily,
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family, bold, italic, res, *index);
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}
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if (res)
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mp_msg(MSGT_ASS, MSGL_V, "fontconfig_select: (%s, %d, %d) -> %s, %d\n",
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family, bold, italic, res, *index);
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return res;
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}
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#if (FC_VERSION < 20402)
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static char* validate_fname(char* name)
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{
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char* fname;
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char* p;
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char* q;
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unsigned code;
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int sz = strlen(name);
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q = fname = malloc(sz + 1);
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p = name;
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while (*p) {
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code = utf8_get_char(&p);
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if (code == 0)
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break;
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if ( (code > 0x7F) ||
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(code == '\\') ||
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(code == '/') ||
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(code == ':') ||
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(code == '*') ||
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(code == '?') ||
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(code == '<') ||
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(code == '>') ||
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(code == '|') ||
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(code == 0))
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{
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*q++ = '_';
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} else {
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*q++ = code;
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}
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if (p - name > sz)
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break;
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}
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*q = 0;
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return fname;
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}
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#endif
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/**
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* \brief Process memory font.
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* \param priv private data
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* \param library library object
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* \param ftlibrary freetype library object
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* \param idx index of the processed font in library->fontdata
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* With FontConfig >= 2.4.2, builds a font pattern in memory via FT_New_Memory_Face/FcFreeTypeQueryFace.
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* With older FontConfig versions, save the font to ~/.mplayer/fonts.
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*/
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static void process_fontdata(fc_instance_t* priv, ass_library_t* library, FT_Library ftlibrary, int idx)
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{
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int rc;
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const char* name = library->fontdata[idx].name;
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const char* data = library->fontdata[idx].data;
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int data_size = library->fontdata[idx].size;
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#if (FC_VERSION < 20402)
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struct stat st;
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char* fname;
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const char* fonts_dir = library->fonts_dir;
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char buf[1000];
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FILE* fp = 0;
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if (!fonts_dir)
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return;
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rc = stat(fonts_dir, &st);
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if (rc) {
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int res;
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#ifndef __MINGW32__
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res = mkdir(fonts_dir, 0700);
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#else
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res = mkdir(fonts_dir);
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#endif
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if (res) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FailedToCreateDirectory, fonts_dir);
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}
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} else if (!S_ISDIR(st.st_mode)) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_NotADirectory, fonts_dir);
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}
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fname = validate_fname((char*)name);
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snprintf(buf, 1000, "%s/%s", fonts_dir, fname);
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free(fname);
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fp = fopen(buf, "wb");
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if (!fp) return;
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fwrite(data, data_size, 1, fp);
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fclose(fp);
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#else // (FC_VERSION >= 20402)
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FT_Face face;
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FcPattern* pattern;
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FcFontSet* fset;
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FcBool res;
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rc = FT_New_Memory_Face(ftlibrary, (unsigned char*)data, data_size, 0, &face);
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if (rc) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorOpeningMemoryFont, name);
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return;
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}
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pattern = FcFreeTypeQueryFace(face, (unsigned char*)name, 0, FcConfigGetBlanks(priv->config));
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if (!pattern) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FunctionCallFailed, "FcFreeTypeQueryFace");
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FT_Done_Face(face);
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return;
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}
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fset = FcConfigGetFonts(priv->config, FcSetSystem); // somehow it failes when asked for FcSetApplication
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if (!fset) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FunctionCallFailed, "FcConfigGetFonts");
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FT_Done_Face(face);
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return;
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}
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res = FcFontSetAdd(fset, pattern);
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if (!res) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FunctionCallFailed, "FcFontSetAdd");
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FT_Done_Face(face);
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return;
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}
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FT_Done_Face(face);
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#endif
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}
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/**
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* \brief Init fontconfig.
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* \param library libass library object
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* \param ftlibrary freetype library object
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* \param family default font family
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* \param path default font path
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* \return pointer to fontconfig private data
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*/
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fc_instance_t* fontconfig_init(ass_library_t* library, FT_Library ftlibrary, const char* family, const char* path, int fc)
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{
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int rc;
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fc_instance_t* priv = calloc(1, sizeof(fc_instance_t));
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const char* dir = library->fonts_dir;
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int i;
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if (!fc) {
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mp_msg(MSGT_ASS, MSGL_WARN,
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MSGTR_LIBASS_FontconfigDisabledDefaultFontWillBeUsed);
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priv->config = NULL;
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priv->path_default = strdup(path);
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priv->index_default = 0;
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return priv;
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}
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rc = FcInit();
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assert(rc);
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priv->config = FcConfigGetCurrent();
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if (!priv->config) {
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mp_msg(MSGT_ASS, MSGL_FATAL, MSGTR_LIBASS_FcInitLoadConfigAndFontsFailed);
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return 0;
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}
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for (i = 0; i < library->num_fontdata; ++i)
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process_fontdata(priv, library, ftlibrary, i);
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if (FcDirCacheValid((const FcChar8 *)dir) == FcFalse)
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{
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mp_msg(MSGT_ASS, MSGL_INFO, MSGTR_LIBASS_UpdatingFontCache);
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if (FcGetVersion() >= 20390 && FcGetVersion() < 20400)
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mp_msg(MSGT_ASS, MSGL_WARN,
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MSGTR_LIBASS_BetaVersionsOfFontconfigAreNotSupported);
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// FontConfig >= 2.4.0 updates cache automatically in FcConfigAppFontAddDir()
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if (FcGetVersion() < 20390) {
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FcFontSet* fcs;
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FcStrSet* fss;
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fcs = FcFontSetCreate();
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fss = FcStrSetCreate();
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rc = FcStrSetAdd(fss, (const FcChar8*)dir);
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if (!rc) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcStrSetAddFailed);
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goto ErrorFontCache;
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}
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rc = FcDirScan(fcs, fss, NULL, FcConfigGetBlanks(priv->config), (const FcChar8 *)dir, FcFalse);
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if (!rc) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcDirScanFailed);
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goto ErrorFontCache;
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}
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rc = FcDirSave(fcs, fss, (const FcChar8 *)dir);
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if (!rc) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcDirSave);
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goto ErrorFontCache;
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}
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ErrorFontCache:
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;
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}
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}
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rc = FcConfigAppFontAddDir(priv->config, (const FcChar8*)dir);
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if (!rc) {
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcConfigAppFontAddDirFailed);
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}
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priv->family_default = family ? strdup(family) : 0;
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priv->path_default = path ? strdup(path) : 0;
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priv->index_default = 0;
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return priv;
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}
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#else // HAVE_FONTCONFIG
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char* fontconfig_select(fc_instance_t* priv, const char* family, unsigned bold, unsigned italic, int* index,
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uint32_t code)
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{
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*index = priv->index_default;
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return priv->path_default;
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}
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fc_instance_t* fontconfig_init(ass_library_t* library, FT_Library ftlibrary, const char* family, const char* path, int fc)
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{
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fc_instance_t* priv;
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mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FontconfigDisabledDefaultFontWillBeUsed);
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priv = calloc(1, sizeof(fc_instance_t));
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priv->path_default = strdup(path);
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priv->index_default = 0;
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return priv;
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}
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#endif
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void fontconfig_done(fc_instance_t* priv)
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{
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// don't call FcFini() here, library can still be used by some code
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if (priv && priv->path_default) free(priv->path_default);
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if (priv && priv->family_default) free(priv->family_default);
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if (priv) free(priv);
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}
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