kc3-lang/freetype/docs/formats.txt
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Hash : 4cc5df80
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Date : 2004-04-30T09:57:49
* docs/formats.txt: Add more information on PFR format.
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docs/formats.txt
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This file contains a list of various font formats. It gives the reference document and whether it is supported in FreeType 2. file type: The only special case is `MAC'; on older Mac OS versions, a `file' is stored as a data and a resource fork, this is, within two separate data chunks. In all other cases, the font data is stored in a single file. wrapper format: The format used to represent the font data. In the table below it is used only if the font format differs. Possible values are `SFNT' (binary), `PS' (a text header, followed by binary or text data), and `LZW' (compressed with either `gzip' or `compress'). font format: How the font is to be accessed, possibly after converting the file type and wrapper format into a generic form. Bitmap formats are `BDF', `PCF', and one form of `WINFNT'; all others are vector formats. font type: Sub-formats of the font format. `SBIT' and `MACSBIT' are bitmap formats, `MM' and `VAR' support optical axes. glyph access: If not specified, the glyph access is `standard' to the font format. Values are `CID' for CID-keyed fonts, `SYNTHETIC' for fonts which are modified versions of other fonts by means of a transformation matrix, `COLLECTION' for collecting multiple fonts (sharing most of the data) into a single file, and `TYPE_0' for PS fonts which are to be accessed in a tree-like structure. FreeType driver: The module in the FreeType library which handles the specific font format. A missing entry means that FreeType doesn't support the font format (yet). Please send additions and/or corrections to wl@gnu.org or to the FreeType developer's list at devel@freetype (for subscribers only). If you can provide a font example for a format which isn't supported yet please send a mail too. file wrapper font font glyph FreeType reference type format format type access driver documents ---------------------------------------------------------------------------- --- --- BDF --- --- bdf 5005.BDF_Spec.pdf, X11 --- SFNT PS TYPE_1 --- --- Type 1 GX Font Format (for the Mac) MAC SFNT PS TYPE_1 --- --- Type 1 GX Font Format (for the Mac) --- SFNT PS TYPE_1 CID --- 5180.sfnt.pdf (for the Mac) MAC SFNT PS TYPE_1 CID --- 5180.sfnt.pdf (for the Mac) --- SFNT PS CFF --- cff OT spec, 5176.CFF.pdf (`OTTO' format) MAC SFNT PS CFF --- cff OT spec, 5176.CFF.pdf (`OTTO' format) --- SFNT PS CFF CID cff OT spec, 5176.CFF.pdf MAC SFNT PS CFF CID cff OT spec, 5176.CFF.pdf --- SFNT PS CFF SYNTHETIC --- OT spec, 5176.CFF.pdf MAC SFNT PS CFF SYNTHETIC --- OT spec, 5176.CFF.pdf --- SFNT TT SBIT --- --- XFree86? (bitmaps only; `head' table) --- SFNT TT MACSBIT --- sfnt OT spec (for the Mac; bitmaps only; `bhed' table) MAC SFNT TT MACSBIT --- sfnt OT spec (for the Mac; bitmaps only; `bhed' table) --- SFNT TT --- --- truetype OT spec (`normal' TT font) MAC SFNT TT --- --- truetype OT spec (`normal' TT font) MAC SFNT TT VAR --- truetype GX spec (`?var' tables) --- SFNT TT --- COLLECTION truetype OT spec (this can't be CFF) MAC SFNT TT --- COLLECTION truetype OT spec (this can't be CFF) --- --- PS TYPE_1 --- type1 T1_SPEC.pdf (`normal' Type 1 font) MAC --- PS TYPE_1 --- type1 T1_SPEC.pdf (`normal' Type 1 font) --- --- PS TYPE_1 CID cid PLRM.pdf (CID Font Type 0; Type 9 font) --- --- PS MM --- type1 5015.Type1_Supp.pdf (Multiple Masters) --- --- PS CFF --- cff 5176.CFF.pdf (`pure' CFF) --- --- PS CFF CID cff 5176.CFF.pdf (`pure' CFF) --- --- PS CFF SYNTHETIC --- 5176.CFF.pdf (`pure' CFF) --- PS PS CFF --- --- PLRM.pdf (Type 2) [1] --- PS PS CFF CID --- PLRM.pdf (Type 2) [1] --- PS PS CFF SYNTHETIC --- PLRM.pdf (Type 2) [1] --- --- PS --- TYPE_0 --- PLRM.pdf --- --- PS TYPE_3 --- --- PLRM.pdf (never supported) --- --- PS TYPE_3 CID --- PLRM.pdf (CID Font Type 1; Type 10 font; never supported) --- PS PS TYPE_14 --- --- PLRM.pdf (Chameleon font; Type 14 font; never supported?) --- --- PS TYPE_32 CID --- PLRM.pdf (CID Font Type 4; Type 32 font; never supported?) --- PS TT --- --- type42 5012.Type42_Spec.pdf (Type 42 font) --- PS TT --- CID --- PLRM.pdf (CID Font Type 2; Type 11 font) --- ? ? CEF ? cff ? --- --- PCF --- --- pcf X11 --- LZW PCF --- --- pcf X11 --- --- PFR PFR0 --- pfr [2] --- --- PFR PFR1 --- --- (undocumented, proprietary; probably never supported) --- --- WINFNT --- --- winfonts MS Windows 3 Developer's Notes --- --- WINFNT VECTOR --- --- MS Windows 3 Developer's Notes [1] Support should be rather simple since this is identical to `CFF' but in a PS wrapper. [2] Official PFR specification: http://www.bitstream.com/categories/developer/truedoc/pfrspec.html http://www.bitstream.com/categories/developer/truedoc/pfrspec1.2.pdf The syntax of the auxiliary data is not defined there, but is partially defined in MHP 1.0.3 (also called ETSI TS 101812 V1.3.1) section 7.4. http://www.etsi.org/ http://webapp.etsi.org/workprogram/Report_WorkItem.asp?WKI_ID=18799 (free registration required).