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Expose libwebp smartSubsample and reductionEffort #1545

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Lovell Fuller
2019-07-14 22:52:38 +01:00
parent 119d16cad3
commit 36e8a3da88
7 changed files with 88 additions and 3 deletions
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3
lib/constructor.js
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@@ -9,6 +9,7 @@ const is = require('./is');
require('./libvips').hasVendoredLibvips();
let sharp;
/* istanbul ignore next */
try {
sharp = require('../build/Release/sharp.node');
} catch (err) {
@@ -197,6 +198,8 @@ const Sharp = function (input, options) {
webpAlphaQuality: 100,
webpLossless: false,
webpNearLossless: false,
webpSmartSubsample: false,
webpReductionEffort: 4,
tiffQuality: 80,
tiffCompression: 'jpeg',
tiffPredictor: 'horizontal',

16
lib/output.js
View File

@@ -290,6 +290,8 @@ function png (options) {
* @param {Number} [options.alphaQuality=100] - quality of alpha layer, integer 0-100
* @param {Boolean} [options.lossless=false] - use lossless compression mode
* @param {Boolean} [options.nearLossless=false] - use near_lossless compression mode
* @param {Boolean} [options.smartSubsample=false] - use high quality chroma subsampling
* @param {Number} [options.reductionEffort=4] - level of CPU effort to reduce file size, integer 0-6
* @param {Boolean} [options.force=true] - force WebP output, otherwise attempt to use input format
* @returns {Sharp}
* @throws {Error} Invalid options
@@ -299,14 +301,14 @@ function webp (options) {
if (is.integer(options.quality) && is.inRange(options.quality, 1, 100)) {
this.options.webpQuality = options.quality;
} else {
throw new Error('Invalid quality (integer, 1-100) ' + options.quality);
throw is.invalidParameterError('quality', 'integer between 1 and 100', options.quality);
}
}
if (is.object(options) && is.defined(options.alphaQuality)) {
if (is.integer(options.alphaQuality) && is.inRange(options.alphaQuality, 0, 100)) {
this.options.webpAlphaQuality = options.alphaQuality;
} else {
throw new Error('Invalid webp alpha quality (integer, 0-100) ' + options.alphaQuality);
throw is.invalidParameterError('alphaQuality', 'integer between 0 and 100', options.alphaQuality);
}
}
if (is.object(options) && is.defined(options.lossless)) {
@@ -315,6 +317,16 @@ function webp (options) {
if (is.object(options) && is.defined(options.nearLossless)) {
this._setBooleanOption('webpNearLossless', options.nearLossless);
}
if (is.object(options) && is.defined(options.smartSubsample)) {
this._setBooleanOption('webpSmartSubsample', options.smartSubsample);
}
if (is.object(options) && is.defined(options.reductionEffort)) {
if (is.integer(options.reductionEffort) && is.inRange(options.reductionEffort, 0, 6)) {
this.options.webpReductionEffort = options.reductionEffort;
} else {
throw is.invalidParameterError('reductionEffort', 'integer between 0 and 6', options.reductionEffort);
}
}
return this._updateFormatOut('webp', options);
}