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Add support for libvips' PPM and FITS loaders #347

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Lovell Fuller 2016-01-31 19:39:21 +00:00
parent 2656c69d99
commit 56508e8d79
6 changed files with 15 additions and 3 deletions
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2
docs/api.md
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@ -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)

4
docs/changelog.md
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@ -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.

2
docs/index.md
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@ -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.

4
src/common.cc
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@ -94,6 +94,10 @@ namespace sharp {
imageType = ImageType::OPENSLIDE;
} else if (EndsWith(loader, "TiffFile")) {
imageType = ImageType::TIFF;
} else if (EndsWith(loader, "Ppm")) {
imageType = ImageType::PPM;
} else if (EndsWith(loader, "Fits")) {
imageType = ImageType::FITS;
} else if (EndsWith(loader, "Magick") || EndsWith(loader, "MagickFile")) {
imageType = ImageType::MAGICK;
}

4
src/common.h
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@ -15,7 +15,9 @@ namespace sharp {
WEBP,
TIFF,
MAGICK,
OPENSLIDE
OPENSLIDE,
PPM,
FITS
};
// How many tasks are in the queue?

2
src/metadata.cc
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@ -120,6 +120,8 @@ class MetadataWorker : public AsyncWorker {
case ImageType::TIFF: baton->format = "tiff"; break;
case ImageType::MAGICK: baton->format = "magick"; break;
case ImageType::OPENSLIDE: baton->format = "openslide"; break;
case ImageType::PPM: baton->format = "ppm"; break;
case ImageType::FITS: baton->format = "fits"; break;
case ImageType::UNKNOWN: break;
}
// VipsImage attributes