Feat: Add support for JP2

docs/api-output.md

@@ -330,6 +330,47 @@ The prebuilt binaries do not include this - see
 
 Returns **Sharp** 
 
+## jp2
+
+Use these JP2 options for output image.
+
+Requires libvips compiled with support for OpenJPEG.
+The prebuilt binaries do not include this - see
+[installing a custom libvips][11].
+
+### Parameters
+
+*   `options` **[Object][6]?** output options
+
+    *   `options.quality` **[number][9]** quality, integer 1-100 (optional, default `80`)
+    *   `options.lossless` **[boolean][7]** use lossless compression mode (optional, default `false`)
+    *   `options.tileWidth` **[number][9]** horizontal tile size (optional, default `256`)
+    *   `options.tileHeight` **[number][9]** vertical tile size (optional, default `256`)
+    *   `options.chromaSubsampling` **[string][2]** set to '4:2:0' to use chroma subsampling (optional, default `'4:4:4'`)
+
+### Examples
+
+```javascript
+// Convert any input to lossless JP2 output
+const data = await sharp(input)
+  .jp2({ lossless: true })
+  .toBuffer();
+```
+
+```javascript
+// Convert any input to very high quality JP2 output
+const data = await sharp(input)
+  .jp2({
+    quality: 100,
+    chromaSubsampling: '4:4:4'
+  })
+  .toBuffer();
+```
+
+*   Throws **[Error][4]** Invalid options
+
+Returns **Sharp** 
+
 ## tiff
 
 Use these TIFF options for output image.

lib/constructor.js

@@ -235,6 +235,11 @@ const Sharp = function (input, options) {
     pngQuality: 100,
     pngBitdepth: 8,
     pngDither: 1,
+    jp2Quality: 80,
+    jp2TileHeight: 512,
+    jp2TileWidth: 512,
+    jp2Lossless: false,
+    jp2ChromaSubsampling: '4:4:4',
     webpQuality: 80,
     webpAlphaQuality: 100,
     webpLossless: false,

lib/output.js

@@ -13,10 +13,15 @@ const formats = new Map([
   ['raw', 'raw'],
   ['tiff', 'tiff'],
   ['webp', 'webp'],
-  ['gif', 'gif']
+  ['gif', 'gif'],
+  ['jp2', 'jp2'],
+  ['jpx', 'jp2'],
+  ['j2k', 'jp2'],
+  ['j2c', 'jp2']
 ]);
 
 const errMagickSave = new Error('GIF output requires libvips with support for ImageMagick');
+const errJp2Save = new Error('JP2 output requires libvips with support for OpenJPEG');
 
 /**
  * Write output image data to a file.
@@ -511,6 +516,84 @@ function gif (options) {
   return this._updateFormatOut('gif', options);
 }
 
+/**
+ * Use these JP2 options for output image.
+ *
+ * Requires libvips compiled with support for OpenJPEG.
+ * The prebuilt binaries do not include this - see
+ * {@link https://sharp.pixelplumbing.com/install#custom-libvips installing a custom libvips}.
+ * @example
+ * // Convert any input to lossless JP2 output
+ * const data = await sharp(input)
+ *   .jp2({ lossless: true })
+ *   .toBuffer();
+ *
+ * @example
+ * // Convert any input to very high quality JP2 output
+ * const data = await sharp(input)
+ *   .jp2({
+ *     quality: 100,
+ *     chromaSubsampling: '4:4:4'
+ *   })
+ *   .toBuffer();
+ *
+ * @param {Object} [options] - output options
+ * @param {number} [options.quality=80] - quality, integer 1-100
+ * @param {boolean} [options.lossless=false] - use lossless compression mode
+ * @param {number} [options.tileWidth=256] - horizontal tile size
+ * @param {number} [options.tileHeight=256] - vertical tile size
+ * @param {string} [options.chromaSubsampling='4:4:4'] - set to '4:2:0' to use chroma subsampling
+ * @returns {Sharp}
+ * @throws {Error} Invalid options
+ */
+/* istanbul ignore next */
+function jp2 (options) {
+  if (!this.constructor.format.jp2k.output.buffer) {
+    throw errJp2Save;
+  }
+
+  if (is.object(options)) {
+    if (is.defined(options.quality)) {
+      if (is.integer(options.quality) && is.inRange(options.quality, 1, 100)) {
+        this.options.jp2Quality = options.quality;
+      } else {
+        throw is.invalidParameterError('quality', 'integer between 1 and 100', options.quality);
+      }
+    }
+
+    if (is.defined(options.lossless)) {
+      if (is.bool(options.lossless)) {
+        this.options.jp2Lossless = options.lossless;
+      } else {
+        throw is.invalidParameterError('lossless', 'boolean', options.lossless);
+      }
+    }
+
+    if (is.defined(options.tileWidth)) {
+      if (is.integer(options.tileWidth) && is.inRange(options.tileWidth, 1, 32768)) {
+        this.options.jp2TileWidth = options.tileWidth;
+      } else {
+        throw is.invalidParameterError('tileWidth', 'integer between 1 and 32768', options.tileWidth);
+      }
+    }
+    if (is.defined(options.tileHeight)) {
+      if (is.integer(options.tileHeight) && is.inRange(options.tileHeight, 1, 32768)) {
+        this.options.jp2TileHeight = options.tileHeight;
+      } else {
+        throw is.invalidParameterError('tileHeight', 'integer between 1 and 32768', options.tileHeight);
+      }
+    }
+
+    if (is.defined(options.chromaSubsampling)) {
+      if (is.string(options.chromaSubsampling) && is.inArray(options.chromaSubsampling, ['4:2:0', '4:4:4'])) {
+        this.options.heifChromaSubsampling = options.chromaSubsampling;
+      } else {
+        throw is.invalidParameterError('chromaSubsampling', 'one of: 4:2:0, 4:4:4', options.chromaSubsampling);
+      }
+    }
+  }
+  return this._updateFormatOut('jp2', options);
+}
 /**
  * Set animation options if available.
  * @private
@@ -1033,6 +1116,7 @@ module.exports = function (Sharp) {
     withMetadata,
     toFormat,
     jpeg,
+    jp2,
     png,
     webp,
     tiff,

package.json

@@ -78,7 +78,8 @@
     "Jacob Smith <jacob@frende.me>",
     "Michael Nutt <michael@nutt.im>",
     "Brad Parham <baparham@gmail.com>",
-    "Taneli Vatanen <taneli.vatanen@gmail.com>"
+    "Taneli Vatanen <taneli.vatanen@gmail.com>",
+    "Joris Dugué <zaruike10@gmail.com>"
   ],
   "scripts": {
     "install": "(node install/libvips && node install/dll-copy && prebuild-install) || (node install/can-compile && node-gyp rebuild && node install/dll-copy)",
@@ -112,6 +113,7 @@
     "tiff",
     "gif",
     "svg",
+    "jp2",
     "dzi",
     "image",
     "resize",

src/common.cc

@@ -157,6 +157,10 @@ namespace sharp {
   bool IsGif(std::string const &str) {
     return EndsWith(str, ".gif") || EndsWith(str, ".GIF");
   }
+  bool IsJp2(std::string const &str) {
+    return EndsWith(str, ".jp2") || EndsWith(str, ".jpx") || EndsWith(str, ".j2k") || EndsWith(str, ".j2c")
+      || EndsWith(str, ".JP2") || EndsWith(str, ".JPX") || EndsWith(str, ".J2K") || EndsWith(str, ".J2C");
+  }
   bool IsTiff(std::string const &str) {
     return EndsWith(str, ".tif") || EndsWith(str, ".tiff") || EndsWith(str, ".TIF") || EndsWith(str, ".TIFF");
   }
@@ -190,6 +194,7 @@ namespace sharp {
       case ImageType::WEBP: id = "webp"; break;
       case ImageType::TIFF: id = "tiff"; break;
       case ImageType::GIF: id = "gif"; break;
+      case ImageType::JP2: id = "jp2"; break;
       case ImageType::SVG: id = "svg"; break;
       case ImageType::HEIF: id = "heif"; break;
       case ImageType::PDF: id = "pdf"; break;
@@ -226,6 +231,8 @@ namespace sharp {
     { "VipsForeignLoadGifBuffer", ImageType::GIF },
     { "VipsForeignLoadNsgifFile", ImageType::GIF },
     { "VipsForeignLoadNsgifBuffer", ImageType::GIF },
+    { "VipsForeignLoadJp2kBuffer", ImageType::JP2 },
+    { "VipsForeignLoadJp2kFile", ImageType::JP2 },
     { "VipsForeignLoadSvgFile", ImageType::SVG },
     { "VipsForeignLoadSvgBuffer", ImageType::SVG },
     { "VipsForeignLoadHeifFile", ImageType::HEIF },
@@ -287,6 +294,7 @@ namespace sharp {
       imageType == ImageType::WEBP ||
       imageType == ImageType::MAGICK ||
       imageType == ImageType::GIF ||
+      imageType == ImageType::JP2 ||
       imageType == ImageType::TIFF ||
       imageType == ImageType::HEIF ||
       imageType == ImageType::PDF;

src/common.h

@@ -116,6 +116,7 @@ namespace sharp {
     JPEG,
     PNG,
     WEBP,
+    JP2,
     TIFF,
     GIF,
     SVG,
@@ -142,6 +143,7 @@ namespace sharp {
   bool IsJpeg(std::string const &str);
   bool IsPng(std::string const &str);
   bool IsWebp(std::string const &str);
+  bool IsJp2(std::string const &str);
   bool IsGif(std::string const &str);
   bool IsTiff(std::string const &str);
   bool IsHeic(std::string const &str);

src/pipeline.cc

@@ -791,6 +791,22 @@ class PipelineWorker : public Napi::AsyncWorker {
           } else {
             baton->channels = std::min(baton->channels, 3);
           }
+        } else if (baton->formatOut == "jp2" || (baton->formatOut == "input"
+          && inputImageType == sharp::ImageType::JP2)) {
+          // Write JP2 to Buffer
+          sharp::AssertImageTypeDimensions(image, sharp::ImageType::JP2);
+          VipsArea *area = reinterpret_cast<VipsArea*>(image.jp2ksave_buffer(VImage::option()
+            ->set("Q", baton->jp2Quality)
+            ->set("lossless", baton->jp2Lossless)
+            ->set("subsample_mode", baton->jp2ChromaSubsampling == "4:4:4"
+                          ? VIPS_FOREIGN_SUBSAMPLE_OFF : VIPS_FOREIGN_SUBSAMPLE_ON)
+            ->set("tile_height", baton->jp2TileHeight)
+            ->set("tile_width", baton->jp2TileWidth)));
+          baton->bufferOut = static_cast<char*>(area->data);
+          baton->bufferOutLength = area->length;
+          area->free_fn = nullptr;
+          vips_area_unref(area);
+          baton->formatOut = "jp2";
         } else if (baton->formatOut == "png" || (baton->formatOut == "input" &&
           (inputImageType == sharp::ImageType::PNG || (inputImageType == sharp::ImageType::GIF && !supportsGifOutput) ||
            inputImageType == sharp::ImageType::SVG))) {
@@ -921,13 +937,14 @@ class PipelineWorker : public Napi::AsyncWorker {
         bool const isWebp = sharp::IsWebp(baton->fileOut);
         bool const isGif = sharp::IsGif(baton->fileOut);
         bool const isTiff = sharp::IsTiff(baton->fileOut);
+        bool const isJp2 = sharp::IsJp2(baton->fileOut);
         bool const isHeif = sharp::IsHeif(baton->fileOut);
         bool const isDz = sharp::IsDz(baton->fileOut);
         bool const isDzZip = sharp::IsDzZip(baton->fileOut);
         bool const isV = sharp::IsV(baton->fileOut);
         bool const mightMatchInput = baton->formatOut == "input";
         bool const willMatchInput = mightMatchInput &&
-         !(isJpeg || isPng || isWebp || isGif || isTiff || isHeif || isDz || isDzZip || isV);
+         !(isJpeg || isPng || isWebp || isGif || isTiff || isJp2 || isHeif || isDz || isDzZip || isV);
 
         if (baton->formatOut == "jpeg" || (mightMatchInput && isJpeg) ||
           (willMatchInput && inputImageType == sharp::ImageType::JPEG)) {
@@ -947,6 +964,18 @@ class PipelineWorker : public Napi::AsyncWorker {
             ->set("optimize_coding", baton->jpegOptimiseCoding));
           baton->formatOut = "jpeg";
           baton->channels = std::min(baton->channels, 3);
+        } else if (baton->formatOut == "jp2" || (mightMatchInput && isJp2) ||
+          (willMatchInput && (inputImageType == sharp::ImageType::JP2))) {
+          // Write JP2 to file
+          sharp::AssertImageTypeDimensions(image, sharp::ImageType::JP2);
+          image.jp2ksave(const_cast<char*>(baton->fileOut.data()), VImage::option()
+            ->set("Q", baton->jp2Quality)
+            ->set("lossless", baton->jp2Lossless)
+            ->set("subsample_mode", baton->jp2ChromaSubsampling == "4:4:4"
+                          ? VIPS_FOREIGN_SUBSAMPLE_OFF : VIPS_FOREIGN_SUBSAMPLE_ON)
+            ->set("tile_height", baton->jp2TileHeight)
+            ->set("tile_width", baton->jp2TileWidth));
+            baton->formatOut = "jp2";
         } else if (baton->formatOut == "png" || (mightMatchInput && isPng) || (willMatchInput &&
           (inputImageType == sharp::ImageType::PNG || (inputImageType == sharp::ImageType::GIF && !supportsGifOutput) ||
            inputImageType == sharp::ImageType::SVG))) {
@@ -1436,6 +1465,11 @@ Napi::Value pipeline(const Napi::CallbackInfo& info) {
   baton->pngQuality = sharp::AttrAsUint32(options, "pngQuality");
   baton->pngBitdepth = sharp::AttrAsUint32(options, "pngBitdepth");
   baton->pngDither = sharp::AttrAsDouble(options, "pngDither");
+  baton->jp2Quality = sharp::AttrAsUint32(options, "jp2Quality");
+  baton->jp2Lossless = sharp::AttrAsBool(options, "jp2Lossless");
+  baton->jp2TileHeight = sharp::AttrAsUint32(options, "jp2TileHeight");
+  baton->jp2TileWidth = sharp::AttrAsUint32(options, "jp2TileWidth");
+  baton->jp2ChromaSubsampling = sharp::AttrAsStr(options, "jp2ChromaSubsampling");
   baton->webpQuality = sharp::AttrAsUint32(options, "webpQuality");
   baton->webpAlphaQuality = sharp::AttrAsUint32(options, "webpAlphaQuality");
   baton->webpLossless = sharp::AttrAsBool(options, "webpLossless");

src/pipeline.h

@@ -149,6 +149,11 @@ struct PipelineBaton {
   int pngQuality;
   int pngBitdepth;
   double pngDither;
+  int jp2Quality;
+  bool jp2Lossless;
+  int jp2TileHeight;
+  int jp2TileWidth;
+  std::string jp2ChromaSubsampling;
   int webpQuality;
   int webpAlphaQuality;
   bool webpNearLossless;
@@ -280,6 +285,11 @@ struct PipelineBaton {
     pngQuality(100),
     pngBitdepth(8),
     pngDither(1.0),
+    jp2Quality(80),
+    jp2Lossless(false),
+    jp2TileHeight(512),
+    jp2TileWidth(512),
+    jp2ChromaSubsampling("4:4:4"),
     webpQuality(80),
     webpAlphaQuality(100),
     webpNearLossless(false),

src/utilities.cc

@@ -115,7 +115,7 @@ Napi::Value format(const Napi::CallbackInfo& info) {
   Napi::Object format = Napi::Object::New(env);
   for (std::string const f : {
     "jpeg", "png", "webp", "tiff", "magick", "openslide", "dz",
-    "ppm", "fits", "gif", "svg", "heif", "pdf", "vips"
+    "ppm", "fits", "gif", "svg", "heif", "pdf", "vips", "jp2k"
   }) {
     // Input
     Napi::Boolean hasInputFile =

test/fixtures/index.js

@@ -105,6 +105,8 @@ module.exports = {
   inputTiffUncompressed: getPath('uncompressed_tiff.tiff'), // https://code.google.com/archive/p/imagetestsuite/wikis/TIFFTestSuite.wiki file: 0c84d07e1b22b76f24cccc70d8788e4a.tif
   inputTiff8BitDepth: getPath('8bit_depth.tiff'),
   inputTifftagPhotoshop: getPath('tifftag-photoshop.tiff'), // https://github.com/lovell/sharp/issues/1600
+
+  inputJp2: getPath('relax.jp2'), // https://www.fnordware.com/j2k/relax.jp2
   inputGif: getPath('Crash_test.gif'), // http://upload.wikimedia.org/wikipedia/commons/e/e3/Crash_test.gif
   inputGifGreyPlusAlpha: getPath('grey-plus-alpha.gif'), // http://i.imgur.com/gZ5jlmE.gif
   inputGifAnimated: getPath('rotating-squares.gif'), // CC0 https://loading.io/spinner/blocks/-rotating-squares-preloader-gif