virtual ~FontConfigTypeface()
{
const uint32_t id = uniqueID();
if (IsRemoteFont(UniqueIdToFileFaceId(id))) {
SkAutoMutexAcquire ac(global_remote_font_map_lock);
AllocateGlobalRemoteFontsMapOnce();
std::map<uint32_t, std::pair<uint8_t*, size_t> >::iterator iter
= global_remote_fonts->find(id);
if (iter != global_remote_fonts->end()) {
sk_free(iter->second.first); // remove the font on memory.
global_remote_fonts->erase(iter);
}
}
}
// static
SkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream)
{
if (!stream)
return NULL;
const size_t length = stream->read(0, 0);
if (!length)
return NULL;
if (length >= 1024 * 1024 * 1024)
return NULL; // don't accept too large fonts (>= 1GB) for safety.
uint8_t* font = (uint8_t*)sk_malloc_throw(length);
if (stream->read(font, length) != length) {
sk_free(font);
return NULL;
}
SkTypeface::Style style = static_cast<SkTypeface::Style>(0);
unsigned id = 0;
{
SkAutoMutexAcquire ac(global_remote_font_map_lock);
AllocateGlobalRemoteFontsMapOnce();
id = FileFaceIdAndStyleToUniqueId(
global_next_remote_font_id | kRemoteFontMask, style);
if (++global_next_remote_font_id >= kRemoteFontMask)
global_next_remote_font_id = 0;
if (!global_remote_fonts->insert(
std::make_pair(id, std::make_pair(font, length))).second) {
sk_free(font);
return NULL;
}
}
SkTypeface* typeface = SkNEW_ARGS(FontConfigTypeface, (style, id));
return typeface;
}
// static
SkStream* SkFontHost::OpenStream(uint32_t id)
{
const unsigned filefaceid = UniqueIdToFileFaceId(id);
if (IsRemoteFont(filefaceid)) {
// remote font
SkAutoMutexAcquire ac(global_remote_font_map_lock);
AllocateGlobalRemoteFontsMapOnce();
std::map<uint32_t, std::pair<uint8_t*, size_t> >::const_iterator iter
= global_remote_fonts->find(id);
if (iter == global_remote_fonts->end())
return NULL;
return SkNEW_ARGS(
SkMemoryStream, (iter->second.first, iter->second.second));
}
// system font
const int fd = GetFcImpl()->Open(filefaceid);
if (fd < 0)
return NULL;
return SkNEW_ARGS(SkFileDescriptorStream, (fd));
}
