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



== GIF ==
== GIF ==
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reading and writing of 1 to 8 bit/pixel palette images is supported.
reading and writing of 1 to 8 bit/pixel palette images is supported.
Tiled images with multiple palettes are not supported.
Tiled images with multiple palettes are not supported.

== JPEG ==

reading and writing of 24bit/pixel is supported. Expecco uses the libjpg library.


== PNG ==
== PNG ==
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* 16bit RGB + alpha: incorrect display
* 16bit RGB + alpha: incorrect display
* TRNS chunk with alpha values (only on-off masks)
* TRNS chunk with alpha values (only on-off masks)

== BMP ==
most formats are supported in reading;
1,4,8 and 24 bit files can be written.

== TIFF ==
most formats are supported in reading.
1, 4, 8 and 24 bit files can be written

== XBM ==
both reading and writing

== XPM ==
some restrictions apply (to be documented)

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.

Version vom 17. Februar 2017, 12:19 Uhr

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

GIF

reading and writing of 1 to 8 bit/pixel palette images is supported. Tiled images with multiple palettes are not supported.

JPEG

reading and writing of 24bit/pixel is supported. Expecco uses the libjpg library.

PNG

(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)

BMP

most formats are supported in reading; 1,4,8 and 24 bit files can be written.

TIFF

most formats are supported in reading. 1, 4, 8 and 24 bit files can be written

XBM

both reading and writing

XPM

some restrictions apply (to be documented)

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.


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