/**
* \brief Init fontconfig.
* \param library libass library object
* \param ftlibrary freetype library object
* \param family default font family
* \param path default font path
* \param fc whether fontconfig should be used
* \param config path to a fontconfig configuration file, or NULL
* \param update whether the fontconfig cache should be built/updated
* \return pointer to fontconfig private data
*/
FCInstance *fontconfig_init(ASS_Library *library,
FT_Library ftlibrary, const char *family,
const char *path, int fc, const char *config,
int update)
{
int rc;
FCInstance *priv = calloc(1, sizeof(FCInstance));
const char *dir = library->fonts_dir;
int i;
if (!fc) {
ass_msg(library, MSGL_WARN,
"Fontconfig disabled, only default font will be used.");
goto exit;
}
priv->config = FcConfigCreate();
rc = FcConfigParseAndLoad(priv->config, (unsigned char *) config, FcTrue);
if (!rc) {
ass_msg(library, MSGL_WARN, "No usable fontconfig configuration "
"file found, using fallback.");
FcConfigDestroy(priv->config);
priv->config = FcInitLoadConfig();
rc++;
}
if (rc && update) {
FcConfigBuildFonts(priv->config);
}
if (!rc || !priv->config) {
ass_msg(library, MSGL_FATAL,
"No valid fontconfig configuration found!");
FcConfigDestroy(priv->config);
goto exit;
}
for (i = 0; i < library->num_fontdata; ++i)
process_fontdata(priv, library, ftlibrary, i);
if (dir) {
ass_msg(library, MSGL_V, "Updating font cache");
rc = FcConfigAppFontAddDir(priv->config, (const FcChar8 *) dir);
if (!rc) {
ass_msg(library, MSGL_WARN, "%s failed", "FcConfigAppFontAddDir");
}
}
priv->family_default = family ? strdup(family) : NULL;
exit:
priv->path_default = path ? strdup(path) : NULL;
priv->index_default = 0;
return priv;
}
/**
* \brief Create font provider for embedded fonts. This parses the fonts known
* to the current ASS_Library and adds them to the selector.
* \param lib library
* \param selector font selector
* \param ftlib FreeType library - used for querying fonts
* \return font provider
*/
static ASS_FontProvider *
ass_embedded_fonts_add_provider(ASS_Library *lib, ASS_FontSelector *selector,
FT_Library ftlib)
{
int i;
ASS_FontProvider *priv = ass_font_provider_new(selector, &ft_funcs, NULL);
if (priv == NULL)
return NULL;
if (lib->fonts_dir && lib->fonts_dir[0]) {
load_fonts_from_dir(lib, lib->fonts_dir);
}
for (i = 0; i < lib->num_fontdata; ++i)
process_fontdata(priv, lib, ftlib, i);
return priv;
}
/**
* \brief Init fontconfig.
* \param library libass library object
* \param ftlibrary freetype library object
* \param family default font family
* \param path default font path
* \return pointer to fontconfig private data
*/
fc_instance_t* fontconfig_init(ass_library_t* library, FT_Library ftlibrary, const char* family, const char* path)
{
int rc;
fc_instance_t* priv = calloc(1, sizeof(fc_instance_t));
const char* dir = library->fonts_dir;
int i;
rc = FcInit();
assert(rc);
priv->config = FcConfigGetCurrent();
if (!priv->config) {
mp_msg(MSGT_ASS, MSGL_FATAL, MSGTR_LIBASS_FcInitLoadConfigAndFontsFailed);
return 0;
}
for (i = 0; i < library->num_fontdata; ++i)
process_fontdata(priv, library, ftlibrary, i);
if (FcDirCacheValid((const FcChar8 *)dir) == FcFalse)
{
mp_msg(MSGT_ASS, MSGL_INFO, MSGTR_LIBASS_UpdatingFontCache);
if (FcGetVersion() >= 20390 && FcGetVersion() < 20400)
mp_msg(MSGT_ASS, MSGL_WARN,
MSGTR_LIBASS_BetaVersionsOfFontconfigAreNotSupported);
// FontConfig >= 2.4.0 updates cache automatically in FcConfigAppFontAddDir()
if (FcGetVersion() < 20390) {
FcFontSet* fcs;
FcStrSet* fss;
fcs = FcFontSetCreate();
fss = FcStrSetCreate();
rc = FcStrSetAdd(fss, (const FcChar8*)dir);
if (!rc) {
mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcStrSetAddFailed);
goto ErrorFontCache;
}
rc = FcDirScan(fcs, fss, NULL, FcConfigGetBlanks(priv->config), (const FcChar8 *)dir, FcFalse);
if (!rc) {
mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcDirScanFailed);
goto ErrorFontCache;
}
rc = FcDirSave(fcs, fss, (const FcChar8 *)dir);
if (!rc) {
mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcDirSave);
goto ErrorFontCache;
}
ErrorFontCache:
;
}
}
rc = FcConfigAppFontAddDir(priv->config, (const FcChar8*)dir);
if (!rc) {
mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_FcConfigAppFontAddDirFailed);
}
priv->family_default = family ? strdup(family) : 0;
priv->path_default = path ? strdup(path) : 0;
priv->index_default = 0;
return priv;
}
