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Expose TIFF compression and predictor options (#738)

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This commit is contained in:
Kristo Jorgenson
2017-03-29 07:12:04 -04:00
committed by Lovell Fuller
parent 5e015cc3ca
commit f8e72f443d
7 changed files with 162 additions and 1 deletions
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20
lib/output.js
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@@ -211,6 +211,8 @@ const webp = function webp (options) {
* @param {Object} [options] - output options
* @param {Number} [options.quality=80] - quality, integer 1-100
* @param {Boolean} [options.force=true] - force TIFF output, otherwise attempt to use input format
* @param {Boolean} [options.compression='jpeg'] - compression options: lzw, deflate, jpeg
* @param {Boolean} [options.predictor='none'] - compression predictor options: none, horizontal, float
* @returns {Sharp}
* @throws {Error} Invalid options
*/
@@ -222,6 +224,24 @@ const tiff = function tiff (options) {
throw new Error('Invalid quality (integer, 1-100) ' + options.quality);
}
}
// compression
if (is.defined(options) && is.defined(options.compression)) {
if (is.string(options.compression) && is.inArray(options.compression, ['lzw', 'deflate', 'jpeg', 'none'])) {
this.options.tiffCompression = options.compression;
} else {
const message = `Invalid compression option "${options.compression}". Should be one of: lzw, deflate, jpeg, none`;
throw new Error(message);
}
}
// predictor
if (is.defined(options) && is.defined(options.predictor)) {
if (is.string(options.predictor) && is.inArray(options.predictor, ['none', 'horizontal', 'float'])) {
this.options.tiffPredictor = options.predictor;
} else {
const message = `Invalid predictor option "${options.predictor}". Should be one of: none, horizontal, float`;
throw new Error(message);
}
}
return this._updateFormatOut('tiff', options);
};