Add support for libvips' PPM and FITS loaders #347

docs/api.md

@@ -38,7 +38,7 @@ Fast access to image metadata without decoding any compressed image data.
 
 `callback`, if present, gets the arguments `(err, metadata)` where `metadata` has the attributes:
 
-* `format`: Name of decoder to be used to decompress image data e.g. `jpeg`, `png`, `webp` (for file-based input additionally `tiff`, `magick` and `openslide`)
+* `format`: Name of decoder to be used to decompress image data e.g. `jpeg`, `png`, `webp` (for file-based input additionally `tiff`, `magick`, `openslide`, `ppm`, `fits`)
 * `width`: Number of pixels wide
 * `height`: Number of pixels high
 * `space`: Name of colour space interpretation e.g. `srgb`, `rgb`, `scrgb`, `cmyk`, `lab`, `xyz`, `b-w` [...](https://github.com/jcupitt/libvips/blob/master/libvips/iofuncs/enumtypes.c#L522)

docs/changelog.md

@@ -12,6 +12,10 @@
   [#340](https://github.com/lovell/sharp/issues/340)
   [@janaz](https://github.com/janaz)
 
+* Add support for libvips' PBM, PGM, PPM and FITS image format loaders.
+  [#347](https://github.com/lovell/sharp/issues/347)
+  [@oaleynik](https://github.com/oaleynik)
+
 * Small optimisation when reducing by an integral factor to favour shrink over affine.
 
 * Add support for gamma correction of images with an alpha channel.

docs/index.md

@@ -24,7 +24,7 @@ to install the libvips dependency.
 ### Formats
 
 This module supports reading JPEG, PNG, WebP, TIFF, OpenSlide,
-GIF and other libmagick-supported formats.
+GIF and most other libmagick-supported formats.
 
 Output images can be in JPEG, PNG and WebP formats as well as uncompressed raw pixel data.