AGFA AC3 Font Compression OS Design Development (Windows CE 5.0)
East Asian font files take up a large amount of memory. Font compression reduces the ROM and RAM impact of these files. Windows CE includes the Agfa AC3 Font Compression technology. AC3 fonts are TrueType fonts in a compressed format. The following list shows some of the benefits of the AC3 technology.
- AC3 technology works with any TrueType font.
- AC3 technology is lossless; no glyph hinting data is lost during compression or decompression.
- Calling the font does not decompress the whole font file but rather decompresses a limited range of characters.
You can include both compressed (files with extensions such as .ac3) and non-compressed (files with extensions such as .ttf and .ttc) font files in your OS design. If font compression is on, Windows CE will first look for the .ac3 file for the font and then use the non-compressed file if the .ac3 file is not found. If font compression is disabled, Windows CE will not use the .ac3 files.
OS Design Information
The following table shows operating system design information for Agfa AC3 Font Compression.
| Element | Information |
|---|---|
| Dependencies | None |
| Hardware considerations | None |
Modules and Components
| Item | Module | Component |
|---|---|---|
| Agfa AC3 Font Compression | GWES | Decompdrv |
Agfa AC3 Font Compression Implementation Considerations
| Sysgen variable | Description |
|---|---|
| SYSGEN_AGFA_FONT | When this variable is set, Agfa AC3 Font Compression is included in the run-time image. |
See Also
Locale Specific OS Design Development
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