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== Other Formats ==
== Other Formats ==
Support for other formats, which are more or less of historic interest,
Support for other formats, which are more or less of historic interest,
can be made available upon request and at some extra charge: XWN, Targa, Sun-Raster, PICT, PCX, PBM, OSX-Icon, IrisRGB. Also, subset of the AVI and FLI formats can be provided if there is a need.
can be made available upon request and at some extra charge: XWD, Targa, Sun-Raster, PICT, PCX, PBM, OSX-Icon, IrisRGB. Also, subset of the AVI and FLI formats can be provided if there is a need.

Version vom 17. Februar 2017, 12:28 Uhr

Although expecco supports a wide range of bitmap image formats, some seldom used formats are not supported, or only supported with limitations.

GIF[Bearbeiten]

reading and writing of 8 bit/pixel palette images is supported. Other images should be converted to 8bpp before writing. Tiled images with multiple palettes are not supported.

JPEG[Bearbeiten]

reading and writing of 24bit/pixel is supported. Expecco uses the libjpg library, so any format supported by that (standard) library will also be supported by expecco.

PNG[Bearbeiten]

(see http://www.schaik.com/pngsuite/pngsuite.html)

  • Grayscale + alpha: reading unsupported (as of 2.11)
  • 16bit RGB + alpha: incorrect display
  • TRNS chunk with alpha values (only on-off masks)

When writing, expecco will always generate either 8bpp palette, or 24bpp truecolor images.

BMP[Bearbeiten]

1,4,8,24 and 32 bpp files can be read and written.

TIFF[Bearbeiten]

most formats are supported in reading, with some limitations:

  • supported compressions:
    • CCITT group3 FAX compression
    • LZW
    • packbits

1, 4, 8 and 24 bit files can be written

XBM[Bearbeiten]

both reading and writing

XPM[Bearbeiten]

some restrictions apply (to be documented)

Other Formats[Bearbeiten]

Support for other formats, which are more or less of historic interest, can be made available upon request and at some extra charge: XWD, Targa, Sun-Raster, PICT, PCX, PBM, OSX-Icon, IrisRGB. Also, subset of the AVI and FLI formats can be provided if there is a need.



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