Release v0.16.0

Changelog update, fix for small leak introduced in 5c5d74a
Add joinChannel and toColourspace/toColorspace operations (#513 )
2026-02-06 22:56:16 +01:00 · 2016-08-18 09:00:04 +01:00 · 2016-08-17 20:56:53 +01:00 · 2016-08-17 15:42:05 +01:00 · 2016-08-13 17:24:06 +01:00 · 2016-08-13 17:19:15 +01:00
60 changed files with 1519 additions and 1276 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,5 @@ lib
 include
 packaging/libvips*
 packaging/*.log
+!packaging/build
 .DS_Store
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,9 +14,8 @@ addons:
    - ubuntu-toolchain-r-test
    packages:
    - g++-4.8
-osx_image: xcode7.3
+osx_image: xcode8
 before_install:
  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CXX=g++-4.8; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install homebrew/science/vips; fi
 after_success:
  - cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -43,6 +43,7 @@ Any change that modifies the existing public API should be added to the relevant
 | ------: | :--------- |
 | v0.16.0 | pencil     |
 | v0.17.0 | quill      |
+| v0.18.0 | ridge      |

 Please squash your changes into a single commit using a command like `git rebase -i upstream/<wip-branch>`.

--- a/README.md
+++ b/README.md
@@ -13,12 +13,9 @@ Lanczos resampling ensures quality is not sacrificed for speed.
 As well as image resizing, operations such as
 rotation, extraction, compositing and gamma correction are available.

-Most Windows (x64), Linux and ARMv6+ systems do not require
+OS X, Windows (x64), Linux (x64, ARM) systems do not require
 the installation of any external runtime dependencies.

-Use with OS X is as simple as running `brew install homebrew/science/vips`
-to install the libvips dependency.
-
 [![Test Coverage](https://coveralls.io/repos/lovell/sharp/badge.png?branch=master)](https://coveralls.io/r/lovell/sharp?branch=master)

 ### Documentation
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-os: Previous Visual Studio 2015
+os: Visual Studio 2015
 version: "{build}"
 build: off
 platform: x64
@@ -10,6 +10,7 @@ environment:
  - nodejs_version: "6"
 install:
  - ps: Install-Product node $env:nodejs_version x64
+  - npm install -g npm@latest
  - npm install
 test_script:
  - npm run-script test-win
--- a/binding.gyp
+++ b/binding.gyp
@@ -18,14 +18,14 @@
          'src/libvips/cplusplus/VImage.cpp'
        ],
        'include_dirs': [
-          '<(module_root_dir)/include',
-          '<(module_root_dir)/include/glib-2.0',
-          '<(module_root_dir)/lib/glib-2.0/include'
+          'include',
+          'include/glib-2.0',
+          'lib/glib-2.0/include'
        ],
        'libraries': [
-          '<(module_root_dir)/lib/libvips.lib',
-          '<(module_root_dir)/lib/libglib-2.0.lib',
-          '<(module_root_dir)/lib/libgobject-2.0.lib'
+          '../lib/libvips.lib',
+          '../lib/libglib-2.0.lib',
+          '../lib/libgobject-2.0.lib'
        ],
        'configurations': {
          'Release': {
@@ -113,16 +113,29 @@
      }, {
        # Attempt to download pre-built libvips and install locally within node_modules
        'include_dirs': [
-          '<(module_root_dir)/include',
-          '<(module_root_dir)/include/glib-2.0',
-          '<(module_root_dir)/lib/glib-2.0/include'
+          'include',
+          'include/glib-2.0',
+          'lib/glib-2.0/include'
        ],
        'conditions': [
          ['OS == "win"', {
            'libraries': [
-              '<(module_root_dir)/lib/libvips.lib',
-              '<(module_root_dir)/lib/libglib-2.0.lib',
-              '<(module_root_dir)/lib/libgobject-2.0.lib'
+              '../lib/libvips.lib',
+              '../lib/libglib-2.0.lib',
+              '../lib/libgobject-2.0.lib'
+            ]
+          }],
+          ['OS == "mac"', {
+            'variables': {
+              'download_vips': '<!(node -e "require(\'./binding\').download_vips()")'
+            },
+            'libraries': [
+              '../lib/libvips-cpp.42.dylib',
+              '../lib/libvips.42.dylib',
+              '../lib/libglib-2.0.0.dylib',
+              '../lib/libgobject-2.0.0.dylib',
+              # Ensure runtime linking is relative to sharp.node
+              '-rpath \'@loader_path/../../lib\''
            ]
          }],
          ['OS == "linux"', {
@@ -130,40 +143,39 @@
              'download_vips': '<!(LDD_VERSION="<!(ldd --version 2>&1 || true)" node -e "require(\'./binding\').download_vips()")'
            },
            'libraries': [
-              '<(module_root_dir)/lib/libvips-cpp.so',
-              '<(module_root_dir)/lib/libvips.so',
-              '<(module_root_dir)/lib/libglib-2.0.so',
-              '<(module_root_dir)/lib/libgobject-2.0.so',
+              '../lib/libvips-cpp.so',
+              '../lib/libvips.so',
+              '../lib/libglib-2.0.so',
+              '../lib/libgobject-2.0.so',
              # Dependencies of dependencies, included for openSUSE support
-              '<(module_root_dir)/lib/libcairo.so',
-              '<(module_root_dir)/lib/libcroco-0.6.so',
-              '<(module_root_dir)/lib/libexif.so',
-              '<(module_root_dir)/lib/libffi.so',
-              '<(module_root_dir)/lib/libfontconfig.so',
-              '<(module_root_dir)/lib/libfreetype.so',
-              '<(module_root_dir)/lib/libgdk_pixbuf-2.0.so',
-              '<(module_root_dir)/lib/libgif.so',
-              '<(module_root_dir)/lib/libgio-2.0.so',
-              '<(module_root_dir)/lib/libgmodule-2.0.so',
-              '<(module_root_dir)/lib/libgsf-1.so',
-              '<(module_root_dir)/lib/libgthread-2.0.so',
-              '<(module_root_dir)/lib/libharfbuzz.so',
-              '<(module_root_dir)/lib/libjpeg.so',
-              '<(module_root_dir)/lib/liblcms2.so',
-              '<(module_root_dir)/lib/liborc-0.4.so',
-              '<(module_root_dir)/lib/libpango-1.0.so',
-              '<(module_root_dir)/lib/libpangocairo-1.0.so',
-              '<(module_root_dir)/lib/libpangoft2-1.0.so',
-              '<(module_root_dir)/lib/libpixman-1.so',
-              '<(module_root_dir)/lib/libpng.so',
-              '<(module_root_dir)/lib/libpng16.so',
-              '<(module_root_dir)/lib/librsvg-2.so',
-              '<(module_root_dir)/lib/libtiff.so',
-              '<(module_root_dir)/lib/libwebp.so',
-              '<(module_root_dir)/lib/libxml2.so',
-              '<(module_root_dir)/lib/libz.so',
+              '../lib/libcairo.so',
+              '../lib/libcroco-0.6.so',
+              '../lib/libexif.so',
+              '../lib/libffi.so',
+              '../lib/libfontconfig.so',
+              '../lib/libfreetype.so',
+              '../lib/libgdk_pixbuf-2.0.so',
+              '../lib/libgif.so',
+              '../lib/libgio-2.0.so',
+              '../lib/libgmodule-2.0.so',
+              '../lib/libgsf-1.so',
+              '../lib/libgthread-2.0.so',
+              '../lib/libharfbuzz.so',
+              '../lib/libjpeg.so',
+              '../lib/liblcms2.so',
+              '../lib/liborc-0.4.so',
+              '../lib/libpango-1.0.so',
+              '../lib/libpangocairo-1.0.so',
+              '../lib/libpangoft2-1.0.so',
+              '../lib/libpixman-1.so',
+              '../lib/libpng.so',
+              '../lib/librsvg-2.so',
+              '../lib/libtiff.so',
+              '../lib/libwebp.so',
+              '../lib/libxml2.so',
+              '../lib/libz.so',
              # Ensure runtime linking is relative to sharp.node
-              '-Wl,-rpath=\'$${ORIGIN}/../../lib\''
+              '-Wl,--disable-new-dtags -Wl,-rpath=\'$${ORIGIN}/../../lib\''
            ]
          }]
        ]
@@ -209,46 +221,48 @@
      ['OS == "win"', {
        # Windows lacks support for rpath
        'copies': [{
-          'destination': '<(module_root_dir)/build/Release',
+          'destination': 'build/Release',
          'files': [
-            '<(module_root_dir)/lib/GNU.Gettext.dll',
-            '<(module_root_dir)/lib/libasprintf-0.dll',
-            '<(module_root_dir)/lib/libcairo-2.dll',
-            '<(module_root_dir)/lib/libcairo-gobject-2.dll',
-            '<(module_root_dir)/lib/libcairo-script-interpreter-2.dll',
-            '<(module_root_dir)/lib/libcroco-0.6-3.dll',
-            '<(module_root_dir)/lib/libexif-12.dll',
-            '<(module_root_dir)/lib/libexpat-1.dll',
-            '<(module_root_dir)/lib/libffi-6.dll',
-            '<(module_root_dir)/lib/libfftw3-3.dll',
-            '<(module_root_dir)/lib/libfontconfig-1.dll',
-            '<(module_root_dir)/lib/libfreetype-6.dll',
-            '<(module_root_dir)/lib/libgcc_s_seh-1.dll',
-            '<(module_root_dir)/lib/libgdk_pixbuf-2.0-0.dll',
-            '<(module_root_dir)/lib/libgif-4.dll',
-            '<(module_root_dir)/lib/libgio-2.0-0.dll',
-            '<(module_root_dir)/lib/libglib-2.0-0.dll',
-            '<(module_root_dir)/lib/libgmodule-2.0-0.dll',
-            '<(module_root_dir)/lib/libgobject-2.0-0.dll',
-            '<(module_root_dir)/lib/libgsf-1-114.dll',
-            '<(module_root_dir)/lib/libgthread-2.0-0.dll',
-            '<(module_root_dir)/lib/libintl-8.dll',
-            '<(module_root_dir)/lib/libjpeg-62.dll',
-            '<(module_root_dir)/lib/liblcms2-2.dll',
-            '<(module_root_dir)/lib/libpango-1.0-0.dll',
-            '<(module_root_dir)/lib/libpangocairo-1.0-0.dll',
-            '<(module_root_dir)/lib/libpangowin32-1.0-0.dll',
-            '<(module_root_dir)/lib/libpixman-1-0.dll',
-            '<(module_root_dir)/lib/libpng16-16.dll',
-            '<(module_root_dir)/lib/libquadmath-0.dll',
-            '<(module_root_dir)/lib/librsvg-2-2.dll',
-            '<(module_root_dir)/lib/libssp-0.dll',
-            '<(module_root_dir)/lib/libstdc++-6.dll',
-            '<(module_root_dir)/lib/libtiff-5.dll',
-            '<(module_root_dir)/lib/libvips-42.dll',
-            '<(module_root_dir)/lib/libwebp-6.dll',
-            '<(module_root_dir)/lib/libxml2-2.dll',
-            '<(module_root_dir)/lib/zlib1.dll'
+            'lib/GNU.Gettext.dll',
+            'lib/libasprintf-0.dll',
+            'lib/libcairo-2.dll',
+            'lib/libcairo-gobject-2.dll',
+            'lib/libcairo-script-interpreter-2.dll',
+            'lib/libcharset-1.dll',
+            'lib/libcroco-0.6-3.dll',
+            'lib/libexif-12.dll',
+            'lib/libexpat-1.dll',
+            'lib/libffi-6.dll',
+            'lib/libfftw3-3.dll',
+            'lib/libfontconfig-1.dll',
+            'lib/libfreetype-6.dll',
+            'lib/libgcc_s_seh-1.dll',
+            'lib/libgdk_pixbuf-2.0-0.dll',
+            'lib/libgif-7.dll',
+            'lib/libgio-2.0-0.dll',
+            'lib/libglib-2.0-0.dll',
+            'lib/libgmodule-2.0-0.dll',
+            'lib/libgobject-2.0-0.dll',
+            'lib/libgsf-1-114.dll',
+            'lib/libgthread-2.0-0.dll',
+            'lib/libiconv-2.dll',
+            'lib/libintl-8.dll',
+            'lib/libjpeg-62.dll',
+            'lib/liblcms2-2.dll',
+            'lib/libpango-1.0-0.dll',
+            'lib/libpangocairo-1.0-0.dll',
+            'lib/libpangowin32-1.0-0.dll',
+            'lib/libpixman-1-0.dll',
+            'lib/libpng16-16.dll',
+            'lib/libquadmath-0.dll',
+            'lib/librsvg-2-2.dll',
+            'lib/libssp-0.dll',
+            'lib/libstdc++-6.dll',
+            'lib/libtiff-5.dll',
+            'lib/libvips-42.dll',
+            'lib/libwebp-6.dll',
+            'lib/libxml2-2.dll',
+            'lib/zlib1.dll'
          ]
        }]
      }]
--- a/binding.js
+++ b/binding.js
@@ -46,6 +46,24 @@ var unpack = function(tarPath, done) {
    .pipe(extractor);
 };

+var platformId = function() {
+  var id = [process.platform, process.arch].join('-');
+  if (process.arch === 'arm') {
+    switch(process.config.variables.arm_version) {
+      case '8':
+        id = id + 'v8';
+        break;
+      case '7':
+        id = id + 'v7';
+        break;
+      default:
+        id = id + 'v6';
+        break;
+    }
+  }
+  return id;
+};
+
 // Error
 var error = function(msg) {
  if (msg instanceof Error) {
@@ -77,8 +95,7 @@ module.exports.download_vips = function() {
      }
    }
    // Arch/platform-specific .tar.gz
-    var platform = (process.arch === 'arm') ? 'arm' : process.platform.substr(0, 3);
-    var tarFilename = ['libvips', minimumLibvipsVersion, platform].join('-') + '.tar.gz';
+    var tarFilename = ['libvips', minimumLibvipsVersion, platformId()].join('-') + '.tar.gz';
    var tarPath = path.join(__dirname, 'packaging', tarFilename);
    if (isFile(tarPath)) {
      unpack(tarPath);
@@ -120,15 +137,5 @@ module.exports.use_global_vips = function() {
      minimumLibvipsVersion
    );
  }
-  if (process.platform === 'darwin' && !useGlobalVips) {
-    if (globalVipsVersion) {
-      error(
-        'Found libvips ' + globalVipsVersion + ' but require ' + minimumLibvipsVersion +
-        '\nPlease upgrade libvips by running: brew update && brew upgrade'
-      );
-    } else {
-      error('Please install libvips by running: brew install homebrew/science/vips --with-webp --with-graphicsmagick');
-    }
-  }
  process.stdout.write(useGlobalVips ? 'true' : 'false');
 };
--- a/circle.yml
+++ b/circle.yml
@@ -3,4 +3,4 @@ machine:
    - docker
 test:
  override:
-    - ./packaging/test.sh
+    - ./packaging/test-linux-x64.sh
--- a/docs/api.md
+++ b/docs/api.md
@@ -60,7 +60,7 @@ Fast access to image metadata without decoding any compressed image data.
 * `format`: Name of decoder used to decompress image data e.g. `jpeg`, `png`, `webp`, `gif`, `svg`
 * `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)
+* `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#L568)
 * `channels`: Number of bands e.g. `3` for sRGB, `4` for CMYK
 * `density`: Number of pixels per inch (DPI), if present
 * `hasProfile`: Boolean indicating the presence of an embedded ICC profile
@@ -445,7 +445,7 @@ Convert to 8-bit greyscale; 256 shades of grey.

 This is a linear operation. If the input image is in a non-linear colour space such as sRGB, use `gamma()` with `greyscale()` for the best results.

-The output image will still be web-friendly sRGB and contain three (identical) channels.
+By default the output image will be web-friendly sRGB and contain three (identical) color channels. This may be overridden by other sharp operations such as `toColourspace('b-w')`, which will produce an output image containing one color channel. An alpha channel may be present, and will be unchanged by the operation.

 #### normalize() / normalise()

@@ -453,12 +453,12 @@ Enhance output image contrast by stretching its luminance to cover the full dyna

 #### overlayWith(image, [options])

-Overlay (composite) a image containing an alpha channel over the processed (resized, extracted etc.) image.
+Overlay (composite) a image over the processed (resized, extracted etc.) image.

 `image` is one of the following, and must be the same size or smaller than the processed image:

-* Buffer containing PNG, WebP, GIF or SVG image data, or
-* String containing the path to an image file, with most major transparency formats supported.
+* Buffer containing image data, or
+* String containing the path to an image file

 `options`, if present, is an Object with the following optional attributes:

@@ -467,6 +467,7 @@ Overlay (composite) a image containing an alpha channel over the processed (resi
 * `left` is an integral Number representing the pixel offset from the left edge.
 * `tile` is a Boolean, defaulting to `false`. When set to `true` repeats the overlay image across the entire image with the given `gravity`.
 * `cutout` is a Boolean, defaulting to `false`. When set to `true` applies only the alpha channel of the overlay image to the image to be overlaid, giving the appearance of one image being cut out of another.
+* `raw` an Object containing `width`, `height` and `channels` when providing uncompressed data.

 If both `top` and `left` are provided, they take precedence over `gravity`.

@@ -489,11 +490,17 @@ sharp('input.png')
  });
 ```

+#### toColourspace(colourspace) / toColorspace(colorspace)
+
+Set the output colourspace. By default output image will be web-friendly sRGB, with additional channels interpreted as alpha channels.  
+  
+`colourspace` is a string or `sharp.colourspace` enum that identifies an output colourspace. String arguments comprise vips colour space interpretation names  e.g. `srgb`, `rgb`, `scrgb`, `cmyk`, `lab`, `xyz`, `b-w` [...](https://github.com/jcupitt/libvips/blob/master/libvips/iofuncs/enumtypes.c#L568)
+  
 #### extractChannel(channel)

 Extract a single channel from a multi-channel image.

-* `channel` is a zero-indexed integral Number representing the band number to extract. `red`, `green` or `blue` are also accepted as an alternative to `0`, `1` or `2` respectively.
+`channel` is a zero-indexed integral Number representing the band number to extract. `red`, `green` or `blue` are also accepted as an alternative to `0`, `1` or `2` respectively.

 ```javascript
 sharp(input)
@@ -504,6 +511,22 @@ sharp(input)
   });
 ```

+#### joinChannel(channels, [options])
+
+Join a data channel to the image. The meaning of the added channels depends on the output colourspace, set with `toColourspace()`. By default the output image will be web-friendly sRGB, with additional channels interpreted as alpha channels.
+
+`channels` is one of
+* a single file path
+* an array of file paths
+* a single buffer
+* an array of buffers
+
+Note that channel ordering follows vips convention:
+* sRGB: 0: Red, 1: Green, 2: Blue, 3: Alpha
+* CMYK: 0: Magenta, 1: Cyan, 2: Yellow, 3: Black, 4: Alpha
+
+Buffers may be any of the image formats supported by sharp: JPEG, PNG, WebP, GIF, SVG, TIFF or raw pixel image data. In the case of a RAW buffer, the `options` object should contain a `raw` attribute, which follows the format of the attribute of the same name in the `sharp()` constructor. See `sharp()` for details. See `raw()` for pixel ordering. 
+
 #### bandbool(operation)

 Perform a bitwise boolean operation on all input image channels (bands) to produce a single channel output image.
@@ -523,11 +546,11 @@ sharp('input.png')
 In the above example if `input.png` is a 3 channel RGB image, `output.png` will be a 1 channel grayscale image where each pixel `P = R & G & B`.
 For example, if `I(1,1) = [247, 170, 14] = [0b11110111, 0b10101010, 0b00001111]` then `O(1,1) = 0b11110111 & 0b10101010 & 0b00001111 = 0b00000010 = 2`.

-#### boolean(image, operation)
+#### boolean(image, operation, [options])

 Perform a bitwise boolean operation with `image`, where `image` is one of the following:

-* Buffer containing PNG, WebP, GIF or SVG image data, or
+* Buffer containing JPEG, PNG, WebP, GIF, SVG, TIFF or raw pixel image data, or
 * String containing the path to an image file

 This operation creates an output image where each pixel is the result of the selected bitwise boolean `operation` between the corresponding pixels of the input images.
@@ -537,6 +560,10 @@ The boolean operation can be one of the following:
 * `or` performs a bitwise or operation, like the c-operator `|`.
 * `eor` performs a bitwise exclusive or operation, like the c-operator `^`.

+`options`, if present, is an Object with the following optional attributes:
+
+* `raw` an Object containing `width`, `height` and `channels` when providing uncompressed data.
+
 ### Output

 #### toFile(path, [callback])
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,5 +1,49 @@
 # Changelog

+### v0.16 - "*pencil*"
+
+Requires libvips v8.3.3
+
+#### v0.16.0 - 18<sup>th</sup> August 2016
+
+* Add pre-compiled libvips for OS X, ARMv7 and ARMv8.
+  [#312](https://github.com/lovell/sharp/issues/312)
+
+* Ensure boolean, bandbool, extractChannel ops occur before sRGB conversion.
+  [#504](https://github.com/lovell/sharp/pull/504)
+  [@mhirsch](https://github.com/mhirsch)
+
+* Recalculate factors after WebP shrink-on-load to avoid round-to-zero errors.
+  [#508](https://github.com/lovell/sharp/issues/508)
+  [@asilvas](https://github.com/asilvas)
+
+* Prevent boolean errors during extract operation.
+  [#511](https://github.com/lovell/sharp/pull/511)
+  [@mhirsch](https://github.com/mhirsch)
+
+* Add joinChannel and toColourspace/toColorspace operations.
+  [#513](https://github.com/lovell/sharp/pull/513)
+  [@mhirsch](https://github.com/mhirsch)
+
+* Add support for raw pixel data with boolean and withOverlay operations.
+  [#516](https://github.com/lovell/sharp/pull/516)
+  [@mhirsch](https://github.com/mhirsch)
+
+* Prevent bandbool creating a single channel sRGB image.
+  [#519](https://github.com/lovell/sharp/pull/519)
+  [@mhirsch](https://github.com/mhirsch)
+
+* Ensure ICC profiles are removed from PNG output unless withMetadata used.
+  [#521](https://github.com/lovell/sharp/issues/521)
+  [@ChrisPinewood](https://github.com/ChrisPinewood)
+
+* Add alpha channels, if missing, to overlayWith images.
+  [#540](https://github.com/lovell/sharp/pull/540)
+  [@cmtt](https://github.com/cmtt)
+
+* Remove deprecated interpolateWith method - use resize(w, h, { interpolator: ... })
+  [#310](https://github.com/lovell/sharp/issues/310)
+
 ### v0.15 - "*outfit*"

 Requires libvips v8.3.1
--- a/docs/index.md
+++ b/docs/index.md
@@ -13,12 +13,9 @@ Lanczos resampling ensures quality is not sacrificed for speed.
 As well as image resizing, operations such as
 rotation, extraction, compositing and gamma correction are available.

-Most Windows (x64), Linux and ARMv6+ systems do not require
+OS X, Windows (x64), Linux (x64, ARM) systems do not require
 the installation of any external runtime dependencies.

-Use with OS X is as simple as running `brew install homebrew/science/vips`
-to install the libvips dependency.
-
 [![Test Coverage](https://coveralls.io/repos/lovell/sharp/badge.png?branch=master)](https://coveralls.io/r/lovell/sharp?branch=master)

 ### Formats
--- a/docs/install.md
+++ b/docs/install.md
@@ -7,7 +7,7 @@ npm install sharp
 ### Prerequisites

 * C++11 compatible compiler such as gcc 4.8+, clang 3.0+ or MSVC 2013+
-* [node-gyp](https://github.com/TooTallNate/node-gyp#installation)
+* [node-gyp](https://github.com/TooTallNate/node-gyp#installation) and its dependencies

 ### Linux

@@ -15,21 +15,21 @@ npm install sharp
 [![Linux Build Status](https://circleci.com/gh/lovell/sharp.svg?style=svg&circle-token=6cb6d1d287a51af83722b19ed8885377fbc85e5c)](https://circleci.com/gh/lovell/sharp)

 libvips and its dependencies are fetched and stored within `node_modules/sharp/lib` during `npm install`.
-This involves an automated HTTPS download of approximately 6.7MB.
+This involves an automated HTTPS download of approximately 6.5MB.

 Most recent Linux-based operating systems with glibc running on x64 and ARMv6+ CPUs should "just work", e.g.:

 * Debian 7, 8
-* Ubuntu 12.04, 14.04, 15.10, 16.04
+* Ubuntu 12.04, 14.04, 16.04
 * Centos 7
 * Fedora 22, 23
 * openSUSE 13.2
-* Archlinux 2015.06.01
+* Archlinux
 * Raspbian Jessie
-* Amazon Linux 2015.03, 2015.09
+* Amazon Linux 2016.03

 To use your own version of libvips instead of the provided binaries, make sure it is
-at least the version listed under `config.libvips` in the `package.json` file,
+at least the version listed under `config.libvips` in the `package.json` file and
 that it can be located using `pkg-config --modversion vips-cpp`.

 There are [changes in the C++11 ABI](https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html)
@@ -66,30 +66,14 @@ via `sharp.cache(false)` to avoid a stack overflow.

 [![OS X 10.9.5 Build Status](https://travis-ci.org/lovell/sharp.png?branch=master)](https://travis-ci.org/lovell/sharp)

-libvips must be installed before `npm install` is run.
-This can be achieved via homebrew:
+libvips and its dependencies are fetched and stored within `node_modules/sharp/lib` during `npm install`.
+This involves an automated HTTPS download of approximately 6.5MB.

-```sh
-brew install homebrew/science/vips
-```
+To use your own version of libvips instead of the provided binaries, make sure it is
+at least the version listed under `config.libvips` in the `package.json` file and
+that it can be located using `pkg-config --modversion vips-cpp`.

-For WebP suppport use:
-
-```sh
-brew install homebrew/science/vips --with-webp
-```
-
-A missing or incorrectly configured _Xcode Command Line Tools_ installation
-[can lead](https://github.com/lovell/sharp/issues/80) to a
-`library not found for -ljpeg` error.
-If so, please try: `xcode-select --install`.
-
-The _gettext_ dependency of _libvips_
-[can lead](https://github.com/lovell/sharp/issues/9)
-to a `library not found for -lintl` error.
-If so, please try `brew link gettext --force`.
-
-### Windows
+### Windows x64

 [![Windows x64 Build Status](https://ci.appveyor.com/api/projects/status/pgtul704nkhhg6sg)](https://ci.appveyor.com/project/lovell/sharp)

--- a/index.js
+++ b/index.js
@@ -42,14 +42,8 @@ var Sharp = function(input, options) {
  stream.Duplex.call(this);
  this.options = {
    // input options
-    bufferIn: [],
-    streamIn: false,
    sequentialRead: false,
    limitInputPixels: maximum.pixels,
-    density: 72,
-    rawWidth: 0,
-    rawHeight: 0,
-    rawChannels: 0,
    // ICC profiles
    iccProfilePath: path.join(__dirname, 'icc') + path.sep,
    // resize options
@@ -90,13 +84,10 @@ var Sharp = function(input, options) {
    gamma: 0,
    greyscale: false,
    normalize: 0,
-    bandBoolOp: null,
-    booleanOp: null,
    booleanBufferIn: null,
    booleanFileIn: '',
+    joinChannelIn: [],
    // overlay
-    overlayFileIn: '',
-    overlayBufferIn: null,
    overlayGravity: 0,
    overlayXOffset : -1,
    overlayYOffset : -1,
@@ -119,24 +110,13 @@ var Sharp = function(input, options) {
    tileSize: 256,
    tileOverlap: 0,
    extractChannel: -1,
+    colourspace: 'srgb',
    // Function to notify of queue length changes
    queueListener: function(queueLength) {
      module.exports.queue.emit('change', queueLength);
    }
  };
-  if (isString(input)) {
-    // input=file
-    this.options.fileIn = input;
-  } else if (isBuffer(input)) {
-    // input=buffer
-    this.options.bufferIn = input;
-  } else if (!isDefined(input)) {
-    // input=stream
-    this.options.streamIn = true;
-  } else {
-    throw new Error('Unsupported input ' + typeof input);
-  }
-  this._inputOptions(options);
+  this.options.input = this._createInputDescriptor(input, options, { allowStream: true });
  return this;
 };
 module.exports = Sharp;
@@ -189,37 +169,50 @@ var contains = function(val, list) {
 };

 /*
-  Set input-related options
-    density: DPI at which to load vector images via libmagick
+  Create Object containing input and input-related options
 */
-Sharp.prototype._inputOptions = function(options) {
-  if (isObject(options)) {
+Sharp.prototype._createInputDescriptor = function(input, inputOptions, containerOptions) {
+  var inputDescriptor = {};
+  if (isString(input)) {
+    // filesystem
+    inputDescriptor.file = input;
+  } else if (isBuffer(input)) {
+    // Buffer
+    inputDescriptor.buffer = input;
+  } else if (!isDefined(input) && isObject(containerOptions) && containerOptions.allowStream) {
+    // Stream
+    inputDescriptor.buffer = [];
+  } else {
+    throw new Error('Unsupported input ' + typeof input);
+  }
+  if (isObject(inputOptions)) {
    // Density
-    if (isDefined(options.density)) {
-      if (isInteger(options.density) && inRange(options.density, 1, 2400)) {
-        this.options.density = options.density;
+    if (isDefined(inputOptions.density)) {
+      if (isInteger(inputOptions.density) && inRange(inputOptions.density, 1, 2400)) {
+        inputDescriptor.density = inputOptions.density;
      } else {
-        throw new Error('Invalid density (1 to 2400) ' + options.density);
+        throw new Error('Invalid density (1 to 2400) ' + inputOptions.density);
      }
    }
    // Raw pixel input
-    if (isDefined(options.raw)) {
+    if (isDefined(inputOptions.raw)) {
      if (
-        isObject(options.raw) &&
-        isInteger(options.raw.width) && inRange(options.raw.width, 1, maximum.width) &&
-        isInteger(options.raw.height) && inRange(options.raw.height, 1, maximum.height) &&
-        isInteger(options.raw.channels) && inRange(options.raw.channels, 1, 4)
+        isObject(inputOptions.raw) &&
+        isInteger(inputOptions.raw.width) && inRange(inputOptions.raw.width, 1, maximum.width) &&
+        isInteger(inputOptions.raw.height) && inRange(inputOptions.raw.height, 1, maximum.height) &&
+        isInteger(inputOptions.raw.channels) && inRange(inputOptions.raw.channels, 1, 4)
      ) {
-        this.options.rawWidth = options.raw.width;
-        this.options.rawHeight = options.raw.height;
-        this.options.rawChannels = options.raw.channels;
+        inputDescriptor.rawWidth = inputOptions.raw.width;
+        inputDescriptor.rawHeight = inputOptions.raw.height;
+        inputDescriptor.rawChannels = inputOptions.raw.channels;
      } else {
        throw new Error('Expected width, height and channels for raw pixel input');
      }
    }
-  } else if (isDefined(options)) {
-    throw new Error('Invalid input options ' + options);
+  } else if (isDefined(inputOptions)) {
+    throw new Error('Invalid input options ' + inputOptions);
  }
+  return inputDescriptor;
 };

 /*
@@ -227,9 +220,9 @@ Sharp.prototype._inputOptions = function(options) {
 */
 Sharp.prototype._write = function(chunk, encoding, callback) {
  /*jslint unused: false */
-  if (this.options.streamIn) {
+  if (Array.isArray(this.options.input.buffer)) {
    if (isBuffer(chunk)) {
-      this.options.bufferIn.push(chunk);
+      this.options.input.buffer.push(chunk);
      callback();
    } else {
      callback(new Error('Non-Buffer data on Writable Stream'));
@@ -240,13 +233,16 @@ Sharp.prototype._write = function(chunk, encoding, callback) {
 };

 /*
-  Flattens the array of chunks in bufferIn
+  Flattens the array of chunks accumulated in input.buffer
 */
 Sharp.prototype._flattenBufferIn = function() {
-  if (Array.isArray(this.options.bufferIn)) {
-    this.options.bufferIn = Buffer.concat(this.options.bufferIn);
+  if (this._isStreamInput()) {
+    this.options.input.buffer = Buffer.concat(this.options.input.buffer);
  }
 };
+Sharp.prototype._isStreamInput = function() {
+  return Array.isArray(this.options.input.buffer);
+};

 // Weighting to apply to image crop
 module.exports.gravity = {
@@ -371,14 +367,8 @@ Sharp.prototype.negate = function(negate) {
 /*
  Bitwise boolean operations between images
 */
-Sharp.prototype.boolean = function(operand, operator) {
-  if (isString(operand)) {
-    this.options.booleanFileIn = operand;
-  } else if (isBuffer(operand)) {
-    this.options.booleanBufferIn = operand;
-  } else {
-    throw new Error('Unsupported boolean operand ' + typeof operand);
-  }
+Sharp.prototype.boolean = function(operand, operator, options) {
+  this.options.boolean = this._createInputDescriptor(operand, options);
  if (isString(operator) && contains(operator, ['and', 'or', 'eor'])) {
    this.options.booleanOp = operator;
  } else {
@@ -391,13 +381,9 @@ Sharp.prototype.boolean = function(operand, operator) {
  Overlay with another image, using an optional gravity
 */
 Sharp.prototype.overlayWith = function(overlay, options) {
-  if (isString(overlay)) {
-    this.options.overlayFileIn = overlay;
-  } else if (isBuffer(overlay)) {
-    this.options.overlayBufferIn = overlay;
-  } else {
-    throw new Error('Unsupported overlay ' + typeof overlay);
-  }
+  this.options.overlay = this._createInputDescriptor(overlay, options, {
+    allowStream: false
+  });
  if (isObject(options)) {
    if (isDefined(options.tile)) {
      if (isBoolean(options.tile)) {
@@ -437,6 +423,20 @@ Sharp.prototype.overlayWith = function(overlay, options) {
  return this;
 };

+/*
+  Add another color channel to the image
+*/
+Sharp.prototype.joinChannel = function(images, options) {
+  if (Array.isArray(images)) {
+    images.forEach(function(image) {
+      this.options.joinChannelIn.push(this._createInputDescriptor(image, options));
+    }, this);
+  } else {
+    this.options.joinChannelIn.push(this._createInputDescriptor(images, options));
+  }
+  return this;
+};
+
 /*
  Rotate output image by 0, 90, 180 or 270 degrees
  Auto-rotation based on the EXIF Orientation tag is represented by an angle of -1
@@ -645,6 +645,18 @@ Sharp.prototype.greyscale = function(greyscale) {
 };
 Sharp.prototype.grayscale = Sharp.prototype.greyscale;

+/*
+  Set output colourspace
+*/
+Sharp.prototype.toColourspace = function(colourspace) {
+  if (!isString(colourspace) ) {
+    throw new Error('Invalid output colourspace ' + colourspace);
+  }
+  this.options.colourspace = colourspace;
+  return this;
+};
+Sharp.prototype.toColorspace = Sharp.prototype.toColourspace;
+
 Sharp.prototype.progressive = function(progressive) {
  this.options.progressive = isBoolean(progressive) ? progressive : true;
  return this;
@@ -833,6 +845,15 @@ module.exports.bool = {
  or: 'or',
  eor: 'eor'
 };
+// Colourspaces
+module.exports.colourspace = {
+  multiband: 'multiband',
+  'b-w': 'b-w',
+  bw: 'b-w',
+  cmyk: 'cmyk',
+  srgb: 'srgb'
+};
+module.exports.colorspace = module.exports.colourspace;

 /*
  Resize image to width x height pixels
@@ -878,13 +899,6 @@ Sharp.prototype.resize = function(width, height, options) {
  }
  return this;
 };
-Sharp.prototype.interpolateWith = util.deprecate(function(interpolator) {
-  return this.resize(
-    this.options.width > 0 ? this.options.width : null,
-    this.options.height > 0 ? this.options.height : null,
-    { interpolator: interpolator }
-  );
-}, 'interpolateWith: Please use resize(w, h, { interpolator: ... }) instead');

 /*
  Limit the total number of pixels for input images
@@ -918,7 +932,7 @@ Sharp.prototype.toFile = function(fileOut, callback) {
      return BluebirdPromise.reject(errOutputInvalid);
    }
  } else {
-    if (this.options.fileIn === fileOut) {
+    if (this.options.input.file === fileOut) {
      var errOutputIsInput = new Error('Cannot use same file for input and output');
      if (typeof callback === 'function') {
        callback(errOutputIsInput);
@@ -1008,7 +1022,7 @@ Sharp.prototype._pipeline = function(callback) {
  var that = this;
  if (typeof callback === 'function') {
    // output=file/buffer
-    if (this.options.streamIn) {
+    if (this._isStreamInput()) {
      // output=file/buffer, input=stream
      this.on('finish', function() {
        that._flattenBufferIn();
@@ -1021,7 +1035,7 @@ Sharp.prototype._pipeline = function(callback) {
    return this;
  } else if (this.options.streamOut) {
    // output=stream
-    if (this.options.streamIn) {
+    if (this._isStreamInput()) {
      // output=stream, input=stream
      this.on('finish', function() {
        that._flattenBufferIn();
@@ -1050,7 +1064,7 @@ Sharp.prototype._pipeline = function(callback) {
    return this;
  } else {
    // output=promise
-    if (this.options.streamIn) {
+    if (this._isStreamInput()) {
      // output=promise, input=stream
      return new BluebirdPromise(function(resolve, reject) {
        that.on('finish', function() {
@@ -1086,7 +1100,7 @@ Sharp.prototype._pipeline = function(callback) {
 Sharp.prototype.metadata = function(callback) {
  var that = this;
  if (typeof callback === 'function') {
-    if (this.options.streamIn) {
+    if (this._isStreamInput()) {
      this.on('finish', function() {
        that._flattenBufferIn();
        sharp.metadata(that.options, callback);
@@ -1096,7 +1110,7 @@ Sharp.prototype.metadata = function(callback) {
    }
    return this;
  } else {
-    if (this.options.streamIn) {
+    if (this._isStreamInput()) {
      return new BluebirdPromise(function(resolve, reject) {
        that.on('finish', function() {
          that._flattenBufferIn();
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "sharp",
-  "version": "0.15.1",
+  "version": "0.16.0",
  "author": "Lovell Fuller <npm@lovell.info>",
  "contributors": [
    "Pierre Inglebert <pierre.inglebert@gmail.com>",
@@ -26,7 +26,8 @@
    "Chintan Thakkar <lemnisk8@gmail.com>",
    "F. Orlando Galashan <frulo@gmx.de>",
    "Kleis Auke Wolthuizen <info@kleisauke.nl>",
-    "Matt Hirsch <mhirsch@media.mit.edu>"
+    "Matt Hirsch <mhirsch@media.mit.edu>",
+    "Matthias Thoemmes <thoemmes@gmail.com>"
  ],
  "description": "High performance Node.js image processing, the fastest module to resize JPEG, PNG, WebP and TIFF images",
  "scripts": {
@@ -34,7 +35,7 @@
    "test": "VIPS_WARNING=0 node ./node_modules/istanbul/lib/cli.js cover ./node_modules/mocha/bin/_mocha -- --slow=5000 --timeout=30000 ./test/unit/*.js",
    "test-win": "node ./node_modules/mocha/bin/mocha --slow=5000 --timeout=60000 ./test/unit/*.js",
    "test-leak": "./test/leak/leak.sh",
-    "test-packaging": "./packaging/test.sh",
+    "test-packaging": "./packaging/test-linux-x64.sh",
    "test-clean": "rm -rf coverage/ test/fixtures/output.* && npm install && npm test"
  },
  "main": "index.js",
@@ -61,26 +62,26 @@
    "bluebird": "^3.4.1",
    "color": "^0.11.3",
    "nan": "^2.4.0",
-    "semver": "^5.2.0",
-    "request": "^2.73.0",
+    "semver": "^5.3.0",
+    "request": "^2.74.0",
    "tar": "^2.2.1"
  },
  "devDependencies": {
-    "async": "^1.5.2",
+    "async": "^2.0.1",
    "bufferutil": "^1.2.1",
-    "coveralls": "^2.11.9",
-    "exif-reader": "^1.0.0",
+    "coveralls": "^2.11.12",
+    "exif-reader": "^1.0.1",
    "icc": "^0.0.2",
    "istanbul": "^0.4.4",
-    "mocha": "^2.5.3",
+    "mocha": "^3.0.0",
    "mocha-jshint": "^2.3.1",
    "node-cpplint": "^0.4.0",
-    "rimraf": "^2.5.3",
+    "rimraf": "^2.5.4",
    "unzip": "^0.1.11"
  },
  "license": "Apache-2.0",
  "config": {
-    "libvips": "8.3.1"
+    "libvips": "8.3.3"
  },
  "engines": {
    "node": ">=0.10"
--- a/packaging/README.md
+++ b/packaging/README.md
@@ -0,0 +1,57 @@
+# Packaging scripts
+
+libvips and its dependencies are provided as pre-compiled shared libraries
+for the most common operating systems and CPU architectures.
+
+During `npm install`, these binaries are fetched as tarballs from
+[Bintray](https://dl.bintray.com/lovell/sharp/) via HTTPS
+and stored locally within `node_modules/sharp`.
+
+## Using a custom tarball
+
+A custom tarball stored on the local filesystem can be used instead.
+Place it in the following location, where `x.y.z` is the libvips version,
+`platform` is the value of `process.platform` and
+`arch` is the value of `process.arch` (plus the version number for ARM).
+
+`node_modules/sharp/packaging/libvips-x.y.z-platform-arch.tar.gz`
+
+For example, for libvips v8.3.3 on an ARMv6 Linux machine, use:
+
+`node_modules/sharp/packaging/libvips-8.3.3-linux-armv6.tar.gz`
+
+Remove any `sharp/lib` and `sharp/include` directories
+before running `npm install` again.
+
+## Creating a tarball
+
+Most people will not need to do this; proceed with caution.
+
+The `packaging` directory contains the top-level [build script](build.sh).
+
+### Linux
+
+One [build script](build/lin.sh) is used to (cross-)compile
+the same shared libraries within multiple containers.
+
+* [x64](linux-x64/Dockerfile)
+* [ARMv6](linux-armv6/Dockerfile)
+* [ARMv7-A](linux-armv7/Dockerfile)
+* [ARMv8-A](linux-armv8/Dockerfile)
+
+The QEMU user mode emulation binaries are required to build for
+the ARMv6 platform as the Debian armhf cross-compiler erroneously
+generates unsupported Thumb 2 instructions.
+
+```sh
+sudo apt-get install qemu-user-static
+```
+
+### Windows
+
+The output of libvips' [build-win64](https://github.com/jcupitt/build-win64)
+"web" target is [post-processed](build/win.sh) within a [container](win32-x64/Dockerfile).
+
+### OS X
+
+See [package-libvips-darwin](https://github.com/lovell/package-libvips-darwin).
--- a/packaging/arm-build.sh
+++ b/packaging/arm-build.sh
@@ -1,34 +0,0 @@
-#!/bin/sh
-
-if [ $# -lt 1 ]; then
-  echo "Usage: $0 IP"
-  echo "Build libvips for ARM using Docker, where IP is"
-  echo "the address of a Raspberry Pi running HypriotOS"
-  exit 1
-fi
-IP="$1"
-
-echo "Verifying connectivity to $IP"
-if ! ping -c 1 $IP; then
-  echo "Could not connect to $IP"
-  exit 1
-fi
-
-if ! type sshpass >/dev/null; then
-  echo "Please install sshpass"
-  exit 1
-fi
-
-export SSHPASS=hypriot
-
-echo "Copying arm/Dockerfile and arm/build.sh to device"
-sshpass -e scp -o PreferredAuthentications=password -r arm root@${IP}:/root
-
-echo "Building Raspbian-based container"
-sshpass -e ssh -o PreferredAuthentications=password -t root@${IP} "docker build -t vips-dev-arm arm"
-
-echo "Running arm/build.sh within container"
-sshpass -e ssh -o PreferredAuthentications=password -t root@${IP} "docker run -i -t --rm -v \${PWD}/arm:/arm vips-dev-arm sh -c 'cd /arm && ./build.sh' | tee arm/build.log"
-
-echo "Copying resultant tar.gz file from device"
-sshpass -e scp -o PreferredAuthentications=password root@${IP}:/root/arm/*.tar.gz .
--- a/packaging/arm/Dockerfile
+++ b/packaging/arm/Dockerfile
@@ -1,5 +0,0 @@
-FROM resin/rpi-raspbian:jessie
-MAINTAINER Lovell Fuller <npm@lovell.info>
-
-# Build dependencies
-RUN apt-get update && apt-get install -y build-essential autoconf libtool nasm gtk-doc-tools texinfo curl
--- a/packaging/build.sh
+++ b/packaging/build.sh
@@ -1,30 +1,43 @@
 #!/bin/sh
+set -e

-VERSION_VIPS=8.3.1
+if [ $# -lt 1 ]; then
+  echo
+  echo "Usage: $0 VERSION [PLATFORM]"
+  echo "Build shared libraries for libvips and its dependencies via containers"
+  echo
+  echo "Please specify the libvips VERSION, e.g. 8.3.3"
+  echo
+  echo "Optionally build for only one PLATFORM, defaults to building for all"
+  echo "Possible values for PLATFORM are: win32-x64, linux-x64, linux-armv6,"
+  echo "linux-armv7, linux-armv8"
+  echo
+  exit 1
+fi
+VERSION_VIPS="$1"
+PLATFORM="${2:-all}"

 # Is docker available?
-
 if ! type docker >/dev/null; then
  echo "Please install docker"
  exit 1
 fi

-# TODO: docker v1.9.0 allows build-time args - https://github.com/docker/docker/pull/15182
+# Windows (x64)
+if [ $PLATFORM = "all" ] || [ $PLATFORM = "win32-x64" ]; then
+  echo "Building win32-x64..."
+  docker build -t vips-dev-win32-x64 win32-x64
+  docker run --rm -e "VERSION_VIPS=${VERSION_VIPS}" -v $PWD:/packaging vips-dev-win32-x64 sh -c "/packaging/build/win.sh"
+fi

-# Windows
-
-docker build -t vips-dev-win win
-WIN_CONTAINER_ID=$(docker run -d vips-dev-win)
-docker cp "${WIN_CONTAINER_ID}:/libvips-${VERSION_VIPS}-win.tar.gz" .
-docker rm "${WIN_CONTAINER_ID}"
-
-# Linux
-
-docker build -t vips-dev-lin lin
-LIN_CONTAINER_ID=$(docker run -d vips-dev-lin)
-docker cp "${LIN_CONTAINER_ID}:/libvips-${VERSION_VIPS}-lin.tar.gz" .
-docker rm "${LIN_CONTAINER_ID}"
-
-# Checksums
+# Linux (x64, ARMv6, ARMv7, ARMv8)
+for flavour in linux-x64 linux-armv6 linux-armv7 linux-armv8; do
+  if [ $PLATFORM = "all" ] || [ $PLATFORM = $flavour ]; then
+    echo "Building $flavour..."
+    docker build -t vips-dev-$flavour $flavour
+    docker run --rm -e "VERSION_VIPS=${VERSION_VIPS}" -v $PWD:/packaging vips-dev-$flavour sh -c "/packaging/build/lin.sh"
+  fi
+done

+# Display checksums
 sha256sum *.tar.gz
--- a/packaging/build/lin.sh
+++ b/packaging/build/lin.sh
@@ -1,6 +1,5 @@
 #!/bin/sh
-
-# To be run inside a Raspbian container
+set -e

 # Working directories
 DEPS=/deps
@@ -13,33 +12,32 @@ export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:${TARGET}/lib/pkgconfig"
 export PATH="${PATH}:${TARGET}/bin"
 export CPPFLAGS="-I${TARGET}/include"
 export LDFLAGS="-L${TARGET}/lib"
-export CFLAGS="-O3"
-export CXXFLAGS="-O3"
+export CFLAGS="${FLAGS}"
+export CXXFLAGS="${FLAGS}"

 # Dependency version numbers
 VERSION_ZLIB=1.2.8
 VERSION_FFI=3.2.1
-VERSION_GLIB=2.48.0
-VERSION_XML2=2.9.3
-VERSION_GSF=1.14.36
+VERSION_GLIB=2.49.4
+VERSION_XML2=2.9.4
+VERSION_GSF=1.14.39
 VERSION_EXIF=0.6.21
-VERSION_LCMS2=2.7
-VERSION_JPEG=1.4.90
-VERSION_PNG16=1.6.21
-VERSION_WEBP=0.5.0
+VERSION_LCMS2=2.8
+VERSION_JPEG=1.5.0
+VERSION_PNG16=1.6.23
+VERSION_WEBP=0.5.1
 VERSION_TIFF=4.0.6
 VERSION_ORC=0.4.25
-VERSION_GDKPIXBUF=2.34.0
-VERSION_FREETYPE=2.6.3
-VERSION_FONTCONFIG=2.11.95
-VERSION_HARFBUZZ=1.2.6
+VERSION_GDKPIXBUF=2.35.2
+VERSION_FREETYPE=2.6.5
+VERSION_FONTCONFIG=2.12.0
+VERSION_HARFBUZZ=1.3.0
 VERSION_PIXMAN=0.34.0
 VERSION_CAIRO=1.14.6
 VERSION_PANGO=1.40.1
 VERSION_CROCO=0.6.11
-VERSION_SVG=2.40.15
+VERSION_SVG=2.40.16
 VERSION_GIF=5.1.4
-VERSION_VIPS=8.3.1

 # Least out-of-sync Sourceforge mirror
 SOURCEFORGE_MIRROR=netix
@@ -47,131 +45,157 @@ SOURCEFORGE_MIRROR=netix
 mkdir ${DEPS}/zlib
 curl -Ls http://zlib.net/zlib-${VERSION_ZLIB}.tar.xz | tar xJC ${DEPS}/zlib --strip-components=1
 cd ${DEPS}/zlib
-./configure --prefix=${TARGET} && make install
+./configure --prefix=${TARGET} --uname=linux
+make install
 rm ${TARGET}/lib/libz.a

 mkdir ${DEPS}/ffi
 curl -Ls ftp://sourceware.org/pub/libffi/libffi-${VERSION_FFI}.tar.gz | tar xzC ${DEPS}/ffi --strip-components=1
 cd ${DEPS}/ffi
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-builddir && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-builddir
+make install-strip

 mkdir ${DEPS}/glib
-curl -Ls https://download.gnome.org/sources/glib/2.48/glib-${VERSION_GLIB}.tar.xz | tar xJC ${DEPS}/glib --strip-components=1
+curl -Ls https://download.gnome.org/sources/glib/2.49/glib-${VERSION_GLIB}.tar.xz | tar xJC ${DEPS}/glib --strip-components=1
 cd ${DEPS}/glib
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --with-pcre=internal && make install-strip
+echo glib_cv_stack_grows=no >>glib.cache
+echo glib_cv_uscore=no >>glib.cache
+./configure --cache-file=glib.cache --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --with-pcre=internal
+make install-strip

 mkdir ${DEPS}/xml2
 curl -Ls http://xmlsoft.org/sources/libxml2-${VERSION_XML2}.tar.gz | tar xzC ${DEPS}/xml2 --strip-components=1
 cd ${DEPS}/xml2
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --without-python --with-zlib=${TARGET} && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
+  --without-python --without-debug --without-docbook --without-ftp --without-html --without-legacy \
+  --without-pattern --without-push --without-regexps --without-schemas --without-schematron --with-zlib=${TARGET}
+make install-strip

 mkdir ${DEPS}/gsf
 curl -Ls https://download.gnome.org/sources/libgsf/1.14/libgsf-${VERSION_GSF}.tar.xz | tar xJC ${DEPS}/gsf --strip-components=1
 cd ${DEPS}/gsf
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/exif
 curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/libexif/libexif/${VERSION_EXIF}/libexif-${VERSION_EXIF}.tar.bz2 | tar xjC ${DEPS}/exif --strip-components=1
 cd ${DEPS}/exif
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+autoreconf -fiv
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/lcms2
 curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/lcms/lcms/${VERSION_LCMS2}/lcms2-${VERSION_LCMS2}.tar.gz | tar xzC ${DEPS}/lcms2 --strip-components=1
 cd ${DEPS}/lcms2
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/jpeg
 curl -Ls https://github.com/libjpeg-turbo/libjpeg-turbo/archive/${VERSION_JPEG}.tar.gz | tar xzC ${DEPS}/jpeg --strip-components=1
 cd ${DEPS}/jpeg
-autoreconf -fiv && ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --with-jpeg8 --without-turbojpeg && make install-strip
+autoreconf -fiv
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --with-jpeg8 --without-turbojpeg
+make install-strip

 mkdir ${DEPS}/png16
 curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/libpng/libpng16/${VERSION_PNG16}/libpng-${VERSION_PNG16}.tar.xz | tar xJC ${DEPS}/png16 --strip-components=1
 cd ${DEPS}/png16
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/webp
 curl -Ls http://downloads.webmproject.org/releases/webp/libwebp-${VERSION_WEBP}.tar.gz | tar xzC ${DEPS}/webp --strip-components=1
 cd ${DEPS}/webp
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-neon
+make install-strip

 mkdir ${DEPS}/tiff
 curl -Ls http://download.osgeo.org/libtiff/tiff-${VERSION_TIFF}.tar.gz | tar xzC ${DEPS}/tiff --strip-components=1
 cd ${DEPS}/tiff
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-rm ${TARGET}/lib/libtiffxx*
+if [ -n "${CHOST}" ]; then autoreconf -fiv; fi
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-mdi --disable-cxx
+make install-strip

 mkdir ${DEPS}/orc
 curl -Ls http://gstreamer.freedesktop.org/data/src/orc/orc-${VERSION_ORC}.tar.xz | tar xJC ${DEPS}/orc --strip-components=1
 cd ${DEPS}/orc
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip
+cd ${TARGET}/lib
+rm -rf liborc-test-*

 mkdir ${DEPS}/gdkpixbuf
-curl -Ls https://download.gnome.org/sources/gdk-pixbuf/2.34/gdk-pixbuf-${VERSION_GDKPIXBUF}.tar.xz | tar xJC ${DEPS}/gdkpixbuf --strip-components=1
+curl -Ls https://download.gnome.org/sources/gdk-pixbuf/2.35/gdk-pixbuf-${VERSION_GDKPIXBUF}.tar.xz | tar xJC ${DEPS}/gdkpixbuf --strip-components=1
 cd ${DEPS}/gdkpixbuf
-LD_LIBRARY_PATH=${TARGET}/lib ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
-  --disable-introspection --disable-modules --without-libpng --without-libjpeg --without-libtiff --without-gdiplus --with-included-loaders= \
-  && make install-strip
+LD_LIBRARY_PATH=${TARGET}/lib \
+./configure --cache-file=gdkpixbuf.cache --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-introspection --disable-modules --disable-gio-sniffing --without-libpng --without-libjpeg --without-libtiff --without-gdiplus --with-included-loaders=
+make install-strip

 mkdir ${DEPS}/freetype
-curl -Ls http://download.savannah.gnu.org/releases/freetype/freetype-${VERSION_FREETYPE}.tar.gz | tar xzC ${DEPS}/freetype --strip-components=1
+curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/freetype/freetype2/${VERSION_FREETYPE}/freetype-${VERSION_FREETYPE}.tar.gz | tar xzC ${DEPS}/freetype --strip-components=1
 cd ${DEPS}/freetype
-./configure --prefix=${TARGET} --enable-shared --disable-static && make install
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static
+make install

 mkdir ${DEPS}/fontconfig
 curl -Ls https://www.freedesktop.org/software/fontconfig/release/fontconfig-${VERSION_FONTCONFIG}.tar.bz2 | tar xjC ${DEPS}/fontconfig --strip-components=1
 cd ${DEPS}/fontconfig
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --enable-libxml2 && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --enable-libxml2
+make install-strip

 mkdir ${DEPS}/harfbuzz
 curl -Ls https://www.freedesktop.org/software/harfbuzz/release/harfbuzz-${VERSION_HARFBUZZ}.tar.bz2 | tar xjC ${DEPS}/harfbuzz --strip-components=1
 cd ${DEPS}/harfbuzz
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/pixman
 curl -Ls http://cairographics.org/releases/pixman-${VERSION_PIXMAN}.tar.gz | tar xzC ${DEPS}/pixman --strip-components=1
 cd ${DEPS}/pixman
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-libpng --disable-arm-iwmmxt && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-libpng --disable-arm-iwmmxt
+make install-strip

 mkdir ${DEPS}/cairo
 curl -Ls http://cairographics.org/releases/cairo-${VERSION_CAIRO}.tar.xz | tar xJC ${DEPS}/cairo --strip-components=1
 cd ${DEPS}/cairo
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
  --disable-xlib --disable-xcb --disable-quartz --disable-win32 --disable-egl --disable-glx --disable-wgl \
-  --disable-script --disable-ps --disable-gobject --disable-trace --disable-interpreter \
-  && make install-strip
+  --disable-script --disable-ps --disable-gobject --disable-trace --disable-interpreter
+make install-strip

 mkdir ${DEPS}/pango
 curl -Ls https://download.gnome.org/sources/pango/1.40/pango-${VERSION_PANGO}.tar.xz | tar xJC ${DEPS}/pango --strip-components=1
 cd ${DEPS}/pango
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/croco
 curl -Ls https://download.gnome.org/sources/libcroco/0.6/libcroco-${VERSION_CROCO}.tar.xz | tar xJC ${DEPS}/croco --strip-components=1
 cd ${DEPS}/croco
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/svg
 curl -Ls https://download.gnome.org/sources/librsvg/2.40/librsvg-${VERSION_SVG}.tar.xz | tar xJC ${DEPS}/svg --strip-components=1
 cd ${DEPS}/svg
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
-  --disable-introspection --disable-tools \
-  && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-introspection --disable-tools --disable-pixbuf-loader
+make install-strip

 mkdir ${DEPS}/gif
 curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/giflib/giflib-${VERSION_GIF}.tar.gz | tar xzC ${DEPS}/gif --strip-components=1
 cd ${DEPS}/gif
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking
+make install-strip

 mkdir ${DEPS}/vips
 curl -Ls http://www.vips.ecs.soton.ac.uk/supported/8.3/vips-${VERSION_VIPS}.tar.gz | tar xzC ${DEPS}/vips --strip-components=1
 cd ${DEPS}/vips
-./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
+./configure --host=${CHOST} --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
  --disable-debug --disable-introspection --without-python --without-fftw \
  --without-magick --without-pangoft2 --without-ppm --without-analyze --without-radiance \
  --with-zip-includes=${TARGET}/include --with-zip-libraries=${TARGET}/lib \
-  --with-jpeg-includes=${TARGET}/include --with-jpeg-libraries=${TARGET}/lib \
-  && make install-strip
+  --with-jpeg-includes=${TARGET}/include --with-jpeg-libraries=${TARGET}/lib
+make install-strip

 # Remove the old C++ bindings
 cd ${TARGET}/include
@@ -208,4 +232,5 @@ echo "{\n\
 }" >lib/versions.json

 # Create .tar.gz
-GZIP=-9 tar czf /arm/libvips-${VERSION_VIPS}-arm.tar.gz include lib
+tar czf /packaging/libvips-${VERSION_VIPS}-${PLATFORM}.tar.gz include lib
+advdef --recompress --shrink-insane /packaging/libvips-${VERSION_VIPS}-${PLATFORM}.tar.gz
--- a/packaging/build/win.sh
+++ b/packaging/build/win.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+set -e
+
+# Fetch and unzip
+mkdir /vips
+cd /vips
+curl -L -O https://github.com/lovell/build-win64/releases/download/v${VERSION_VIPS}/vips-dev-w64-web-${VERSION_VIPS}.zip
+unzip vips-dev-w64-web-${VERSION_VIPS}.zip
+
+# Clean and zip
+cd /vips/vips-dev-8.3
+rm bin/libvipsCC-42.dll bin/libvips-cpp-42.dll bin/libgsf-win32-1-114.dll
+cp bin/*.dll lib/
+cp -r lib64/* lib/
+
+echo "Creating tarball"
+tar czf /packaging/libvips-${VERSION_VIPS}-${PLATFORM}.tar.gz include lib/glib-2.0 lib/libvips.lib lib/libglib-2.0.lib lib/libgobject-2.0.lib lib/*.dll
+echo "Shrinking tarball"
+advdef --recompress --shrink-insane /packaging/libvips-${VERSION_VIPS}-${PLATFORM}.tar.gz
--- a/packaging/lin/Dockerfile
+++ b/packaging/lin/Dockerfile
@@ -1,221 +0,0 @@
-FROM debian:wheezy
-MAINTAINER Lovell Fuller <npm@lovell.info>
-
-# Build dependencies
-RUN apt-get update && apt-get install -y build-essential autoconf libtool nasm gtk-doc-tools texinfo
-
-# Create working directories
-ENV DEPS=/deps \
-    TARGET=/target
-RUN mkdir ${DEPS} && mkdir ${TARGET}
-
-# Common build paths and flags
-ENV PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:${TARGET}/lib/pkgconfig" \
-    PATH="${PATH}:${TARGET}/bin" \
-    CPPFLAGS="-I${TARGET}/include" \
-    LDFLAGS="-L${TARGET}/lib" \
-    CFLAGS="-O3" \
-    CXXFLAGS="-O3"
-
-# Dependency version numbers
-ENV VERSION_ZLIB=1.2.8 \
-    VERSION_FFI=3.2.1 \
-    VERSION_GLIB=2.48.0 \
-    VERSION_XML2=2.9.3 \
-    VERSION_GSF=1.14.36 \
-    VERSION_EXIF=0.6.21 \
-    VERSION_LCMS2=2.7 \
-    VERSION_JPEG=1.4.90 \
-    VERSION_PNG16=1.6.21 \
-    VERSION_WEBP=0.5.0 \
-    VERSION_TIFF=4.0.6 \
-    VERSION_ORC=0.4.25 \
-    VERSION_GDKPIXBUF=2.34.0 \
-    VERSION_FREETYPE=2.6.3 \
-    VERSION_FONTCONFIG=2.11.95 \
-    VERSION_HARFBUZZ=1.2.6 \
-    VERSION_PIXMAN=0.34.0 \
-    VERSION_CAIRO=1.14.6 \
-    VERSION_PANGO=1.40.1 \
-    VERSION_CROCO=0.6.11 \
-    VERSION_SVG=2.40.15 \
-    VERSION_GIF=5.1.4 \
-    VERSION_VIPS=8.3.1
-
-# Least out-of-sync Sourceforge mirror
-ENV SOURCEFORGE_MIRROR=netix
-
-RUN mkdir ${DEPS}/zlib
-RUN curl -Ls http://zlib.net/zlib-${VERSION_ZLIB}.tar.xz | tar xJC ${DEPS}/zlib --strip-components=1
-WORKDIR ${DEPS}/zlib
-RUN ./configure --prefix=${TARGET} && make install
-RUN rm ${TARGET}/lib/libz.a
-
-RUN mkdir ${DEPS}/ffi
-RUN curl -Ls ftp://sourceware.org/pub/libffi/libffi-${VERSION_FFI}.tar.gz | tar xzC ${DEPS}/ffi --strip-components=1
-WORKDIR ${DEPS}/ffi
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-builddir && make install-strip
-
-RUN mkdir ${DEPS}/glib
-RUN curl -Ls https://download.gnome.org/sources/glib/2.48/glib-${VERSION_GLIB}.tar.xz | tar xJC ${DEPS}/glib --strip-components=1
-WORKDIR ${DEPS}/glib
-RUN CFLAGS="${CFLAGS} -Wl,--default-symver" CXXFLAGS="${CXXFLAGS} -Wl,--default-symver" \
-  ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --with-pcre=internal && make install-strip
-
-RUN mkdir ${DEPS}/xml2
-RUN curl -Ls http://xmlsoft.org/sources/libxml2-${VERSION_XML2}.tar.gz | tar xzC ${DEPS}/xml2 --strip-components=1
-WORKDIR ${DEPS}/xml2
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
-  --without-python --without-debug --without-docbook --without-ftp --without-html --without-legacy \
-  --without-pattern --without-push --without-regexps --without-schemas --without-schematron --with-zlib=${TARGET} \
-  && make install-strip
-
-RUN mkdir ${DEPS}/gsf
-RUN curl -Ls https://download.gnome.org/sources/libgsf/1.14/libgsf-${VERSION_GSF}.tar.xz | tar xJC ${DEPS}/gsf --strip-components=1
-WORKDIR ${DEPS}/gsf
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/exif
-RUN curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/libexif/libexif/${VERSION_EXIF}/libexif-${VERSION_EXIF}.tar.bz2 | tar xjC ${DEPS}/exif --strip-components=1
-WORKDIR ${DEPS}/exif
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/lcms2
-RUN curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/lcms/lcms/${VERSION_LCMS2}/lcms2-${VERSION_LCMS2}.tar.gz | tar xzC ${DEPS}/lcms2 --strip-components=1
-WORKDIR ${DEPS}/lcms2
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/jpeg
-RUN curl -Ls https://github.com/libjpeg-turbo/libjpeg-turbo/archive/${VERSION_JPEG}.tar.gz | tar xzC ${DEPS}/jpeg --strip-components=1
-WORKDIR ${DEPS}/jpeg
-RUN autoreconf -fiv && ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --with-jpeg8 --without-turbojpeg && make install-strip
-
-RUN mkdir ${DEPS}/png16
-RUN curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/libpng/libpng16/${VERSION_PNG16}/libpng-${VERSION_PNG16}.tar.xz | tar xJC ${DEPS}/png16 --strip-components=1
-WORKDIR ${DEPS}/png16
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/webp
-RUN curl -Ls http://downloads.webmproject.org/releases/webp/libwebp-${VERSION_WEBP}.tar.gz | tar xzC ${DEPS}/webp --strip-components=1
-WORKDIR ${DEPS}/webp
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/tiff
-RUN curl -Ls http://download.osgeo.org/libtiff/tiff-${VERSION_TIFF}.tar.gz | tar xzC ${DEPS}/tiff --strip-components=1
-WORKDIR ${DEPS}/tiff
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-RUN rm ${TARGET}/lib/libtiffxx*
-
-RUN mkdir ${DEPS}/orc
-RUN curl -Ls http://gstreamer.freedesktop.org/data/src/orc/orc-${VERSION_ORC}.tar.xz | tar xJC ${DEPS}/orc --strip-components=1
-WORKDIR ${DEPS}/orc
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-RUN rm ${TARGET}/lib/liborc-test-*
-
-RUN mkdir ${DEPS}/gdkpixbuf
-RUN curl -Ls https://download.gnome.org/sources/gdk-pixbuf/2.34/gdk-pixbuf-${VERSION_GDKPIXBUF}.tar.xz | tar xJC ${DEPS}/gdkpixbuf --strip-components=1
-WORKDIR ${DEPS}/gdkpixbuf
-RUN LD_LIBRARY_PATH=${TARGET}/lib ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
-  --disable-introspection --disable-modules --without-libpng --without-libjpeg --without-libtiff --without-gdiplus --with-included-loaders= \
-  && make install-strip
-
-RUN mkdir ${DEPS}/freetype
-RUN curl -Ls http://download.savannah.gnu.org/releases/freetype/freetype-${VERSION_FREETYPE}.tar.gz | tar xzC ${DEPS}/freetype --strip-components=1
-WORKDIR ${DEPS}/freetype
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static && make install
-
-RUN mkdir ${DEPS}/fontconfig
-RUN curl -Ls https://www.freedesktop.org/software/fontconfig/release/fontconfig-${VERSION_FONTCONFIG}.tar.bz2 | tar xjC ${DEPS}/fontconfig --strip-components=1
-WORKDIR ${DEPS}/fontconfig
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --enable-libxml2 && make install-strip
-
-RUN mkdir ${DEPS}/harfbuzz
-RUN curl -Ls https://www.freedesktop.org/software/harfbuzz/release/harfbuzz-${VERSION_HARFBUZZ}.tar.bz2 | tar xjC ${DEPS}/harfbuzz --strip-components=1
-WORKDIR ${DEPS}/harfbuzz
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/pixman
-RUN curl -Ls http://cairographics.org/releases/pixman-${VERSION_PIXMAN}.tar.gz | tar xzC ${DEPS}/pixman --strip-components=1
-WORKDIR ${DEPS}/pixman
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking --disable-libpng && make install-strip
-
-RUN mkdir ${DEPS}/cairo
-RUN curl -Ls http://cairographics.org/releases/cairo-${VERSION_CAIRO}.tar.xz | tar xJC ${DEPS}/cairo --strip-components=1
-WORKDIR ${DEPS}/cairo
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
-  --disable-xlib --disable-xcb --disable-quartz --disable-win32 --disable-egl --disable-glx --disable-wgl \
-  --disable-script --disable-ps --disable-gobject --disable-trace --disable-interpreter \
-  && make install-strip
-
-RUN mkdir ${DEPS}/pango
-RUN curl -Ls https://download.gnome.org/sources/pango/1.40/pango-${VERSION_PANGO}.tar.xz | tar xJC ${DEPS}/pango --strip-components=1
-WORKDIR ${DEPS}/pango
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/croco
-RUN curl -Ls https://download.gnome.org/sources/libcroco/0.6/libcroco-${VERSION_CROCO}.tar.xz | tar xJC ${DEPS}/croco --strip-components=1
-WORKDIR ${DEPS}/croco
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/svg
-RUN curl -Ls https://download.gnome.org/sources/librsvg/2.40/librsvg-${VERSION_SVG}.tar.xz | tar xJC ${DEPS}/svg --strip-components=1
-WORKDIR ${DEPS}/svg
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
-  --disable-introspection --disable-tools \
-  && make install-strip
-
-RUN mkdir ${DEPS}/gif
-RUN curl -Ls http://${SOURCEFORGE_MIRROR}.dl.sourceforge.net/project/giflib/giflib-${VERSION_GIF}.tar.gz | tar xzC ${DEPS}/gif --strip-components=1
-WORKDIR ${DEPS}/gif
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking && make install-strip
-
-RUN mkdir ${DEPS}/vips
-RUN curl -Ls http://www.vips.ecs.soton.ac.uk/supported/8.3/vips-${VERSION_VIPS}.tar.gz | tar xzC ${DEPS}/vips --strip-components=1
-#RUN apt-get install -y swig gobject-introspection gettext glib2.0-dev
-#RUN curl -Ls https://github.com/jcupitt/libvips/archive/master.tar.gz | tar xzC ${DEPS}/vips --strip-components=1
-WORKDIR ${DEPS}/vips
-#RUN ./bootstrap.sh
-RUN ./configure --prefix=${TARGET} --enable-shared --disable-static --disable-dependency-tracking \
-  --disable-debug --disable-introspection --without-python --without-fftw \
-  --without-magick --without-pangoft2 --without-ppm --without-analyze --without-radiance \
-  --with-zip-includes=${TARGET}/include --with-zip-libraries=${TARGET}/lib \
-  --with-jpeg-includes=${TARGET}/include --with-jpeg-libraries=${TARGET}/lib \
-  && make install-strip
-
-# Remove the old C++ bindings
-WORKDIR ${TARGET}/include
-RUN rm -rf vips/vipsc++.h vips/vipscpp.h
-WORKDIR ${TARGET}/lib
-RUN rm -rf pkgconfig .libs *.la libvipsCC*
-
-# Create JSON file of version numbers
-WORKDIR ${TARGET}
-RUN echo "{\n\
-  \"cairo\": \"${VERSION_CAIRO}\",\n\
-  \"croco\": \"${VERSION_CROCO}\",\n\
-  \"exif\": \"${VERSION_EXIF}\",\n\
-  \"ffi\": \"${VERSION_FFI}\",\n\
-  \"fontconfig\": \"${VERSION_FONTCONFIG}\",\n\
-  \"freetype\": \"${VERSION_FREETYPE}\",\n\
-  \"gdkpixbuf\": \"${VERSION_GDKPIXBUF}\",\n\
-  \"gif\": \"${VERSION_GIF}\",\n\
-  \"glib\": \"${VERSION_GLIB}\",\n\
-  \"gsf\": \"${VERSION_GSF}\",\n\
-  \"harfbuzz\": \"${VERSION_HARFBUZZ}\",\n\
-  \"jpeg\": \"${VERSION_JPEG}\",\n\
-  \"lcms\": \"${VERSION_LCMS2}\",\n\
-  \"orc\": \"${VERSION_ORC}\",\n\
-  \"pango\": \"${VERSION_PANGO}\",\n\
-  \"pixman\": \"${VERSION_PIXMAN}\",\n\
-  \"png\": \"${VERSION_PNG16}\",\n\
-  \"svg\": \"${VERSION_SVG}\",\n\
-  \"tiff\": \"${VERSION_TIFF}\",\n\
-  \"vips\": \"${VERSION_VIPS}\",\n\
-  \"webp\": \"${VERSION_WEBP}\",\n\
-  \"xml\": \"${VERSION_XML2}\",\n\
-  \"zlib\": \"${VERSION_ZLIB}\"\n\
-}" >lib/versions.json
-
-# Create .tar.gz
-WORKDIR ${TARGET}
-RUN GZIP=-9 tar czf /libvips-${VERSION_VIPS}-lin.tar.gz include lib
--- a/packaging/linux-armv6/Dockerfile
+++ b/packaging/linux-armv6/Dockerfile
@@ -0,0 +1,15 @@
+FROM socialdefect/raspbian-jessie-core
+MAINTAINER Lovell Fuller <npm@lovell.info>
+
+# Create Rasbian-based container suitable for compiling Linux ARMv6 binaries
+# Requires the QEMU user mode emulation binaries on the host machine
+
+# Build dependencies
+RUN \
+  apt-get update && \
+  apt-get install -y build-essential curl autoconf libtool nasm gtk-doc-tools texinfo advancecomp libglib2.0-dev
+
+# Compiler settings
+ENV \
+  PLATFORM=linux-armv6 \
+  FLAGS="-Os"
--- a/packaging/linux-armv7/Dockerfile
+++ b/packaging/linux-armv7/Dockerfile
@@ -0,0 +1,20 @@
+FROM debian:jessie
+MAINTAINER Lovell Fuller <npm@lovell.info>
+
+# Create Debian-based container suitable for cross-compiling Linux ARMv7-A binaries
+
+# Build dependencies
+RUN \
+  apt-get update && \
+  apt-get install -y curl && \
+  echo "deb http://emdebian.org/tools/debian/ jessie main" | tee /etc/apt/sources.list.d/crosstools.list && \
+  curl http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | apt-key add - && \
+  dpkg --add-architecture armhf && \
+  apt-get update && \
+  apt-get install -y crossbuild-essential-armhf autoconf libtool nasm gtk-doc-tools texinfo advancecomp libglib2.0-dev
+
+# Compiler settings
+ENV \
+  PLATFORM=linux-armv7 \
+  CHOST=arm-linux-gnueabihf \
+  FLAGS="-marm -march=armv7-a -mfpu=neon-vfpv4 -mfloat-abi=hard -Os"
--- a/packaging/linux-armv8/Dockerfile
+++ b/packaging/linux-armv8/Dockerfile
@@ -0,0 +1,18 @@
+FROM debian:stretch
+MAINTAINER Lovell Fuller <npm@lovell.info>
+
+# Create Debian-based container suitable for cross-compiling Linux ARMv8-A binaries
+
+# Build dependencies
+RUN \
+  apt-get update && \
+  apt-get install -y curl && \
+  dpkg --add-architecture arm64 && \
+  apt-get update && \
+  apt-get install -y crossbuild-essential-arm64 autoconf libtool nasm gtk-doc-tools texinfo advancecomp libglib2.0-dev
+
+# Compiler settings
+ENV \
+  PLATFORM=linux-armv8 \
+  CHOST=aarch64-linux-gnu \
+  FLAGS="-march=armv8-a -Os -D_GLIBCXX_USE_CXX11_ABI=0"
--- a/packaging/linux-x64/Dockerfile
+++ b/packaging/linux-x64/Dockerfile
@@ -0,0 +1,14 @@
+FROM debian:wheezy
+MAINTAINER Lovell Fuller <npm@lovell.info>
+
+# Create Debian-based container suitable for building Linux x64 binaries
+
+# Build dependencies
+RUN \
+  apt-get update && \
+  apt-get install -y build-essential autoconf libtool nasm gtk-doc-tools texinfo advancecomp
+
+# Compiler settings
+ENV \
+  PLATFORM="linux-x64" \
+  FLAGS="-O3"
--- a/packaging/test-linux-arm.sh
+++ b/packaging/test-linux-arm.sh
@@ -22,7 +22,7 @@ fi
 export SSHPASS=hypriot

 echo "Copying sharp source to device"
-sshpass -e scp -o PreferredAuthentications=password -r ../../sharp root@${IP}:/root/sharp
+sshpass -e scp -o PreferredAuthentications=password -r ../../sharp pirate@${IP}:/home/pirate/sharp

 echo "Compile and test within container"
-sshpass -e ssh -o PreferredAuthentications=password -t root@${IP} "docker run -i -t --rm -v \${PWD}/sharp:/s hypriot/rpi-node:5 sh -c 'cd /s && npm install --unsafe-perm && npm test'"
+sshpass -e ssh -o PreferredAuthentications=password -t pirate@${IP} "docker run --rm -v \${PWD}/sharp:/s hypriot/rpi-node:6 sh -c 'cd /s && npm install --unsafe-perm && npm test'"
--- a/packaging/test-linux-x64.sh
+++ b/packaging/test-linux-x64.sh
@@ -6,7 +6,7 @@ if ! type docker >/dev/null; then
  exit 1
 fi

-version_node=4.4.2
+version_node=6.3.0

 test="npm run clean; npm install --unsafe-perm; npm test"

@@ -23,15 +23,15 @@ done
 # Centos 7
 echo "Testing centos7..."
 if docker run -i -t --rm -v $PWD:/v -e "NODE_ENV=development" nodesource/centos7:$version_node >packaging/$dist.log 2>&1 sh -c "cd /v; $test";
-then echo "$dist OK"
-else echo "$dist fail" && cat packaging/$dist.log
+then echo "centos7 OK"
+else echo "centos7 fail" && cat packaging/$dist.log
 fi

 # Fedora 22
 echo "Testing fedora22..."
 if docker run -i -t --rm -v $PWD:/v -e "NODE_ENV=development" nodesource/fedora22:$version_node >packaging/$dist.log 2>&1 sh -c "cd /v; $test";
-then echo "$dist OK"
-else echo "$dist fail" && cat packaging/$dist.log
+then echo "fedora22 OK"
+else echo "fedora22 fail" && cat packaging/$dist.log
 fi

 # openSUSE 13.2
@@ -43,7 +43,7 @@ fi

 # Archlinux 2015.06.01
 echo "Testing archlinux..."
-if docker run -i -t --rm -v $PWD:/v base/archlinux:2015.06.01 >packaging/archlinux.log 2>&1 sh -c "cd /v; ./packaging/test/archlinux.sh; $test";
+if docker run -i -t --rm -v $PWD:/v pritunl/archlinux:latest >packaging/archlinux.log 2>&1 sh -c "cd /v; ./packaging/test/archlinux.sh; $test";
 then echo "archlinux OK"
 else echo "archlinux fail" && cat packaging/archlinux.log
 fi
--- a/packaging/test/alpine.sh
+++ b/packaging/test/alpine.sh
@@ -3,5 +3,5 @@
 # Install build dependencies
 apk add --update make gcc g++ python nodejs

-# Install libvips with build headers and dependencies
-apk add libvips-dev --update --repository https://s3.amazonaws.com/wjordan-apk --allow-untrusted
+# Install libvips from aports/testing
+apk add --update --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing vips-dev
--- a/packaging/win/Dockerfile
+++ b/packaging/win/Dockerfile
@@ -1,20 +0,0 @@
-FROM debian:wheezy
-MAINTAINER Lovell Fuller <npm@lovell.info>
-
-RUN apt-get update && apt-get install -y curl zip
-
-ENV VERSION_VIPS=8.3.1
-
-# Fetch and unzip
-RUN mkdir /vips
-WORKDIR /vips
-RUN curl -L -O https://github.com/lovell/build-win64/releases/download/v${VERSION_VIPS}/vips-dev-w64-web-${VERSION_VIPS}.zip
-RUN unzip vips-dev-w64-web-${VERSION_VIPS}.zip
-
-# Clean and zip
-WORKDIR /vips/vips-dev-8.3
-RUN rm bin/libvipsCC-42.dll bin/libvips-cpp-42.dll bin/libgsf-win32-1-114.dll
-RUN cp bin/*.dll lib/
-RUN cp -r lib64/* lib/
-
-RUN GZIP=-9 tar czf /libvips-${VERSION_VIPS}-win.tar.gz include lib/glib-2.0 lib/libvips.lib lib/libglib-2.0.lib lib/libgobject-2.0.lib lib/*.dll
--- a/packaging/win32-x64/Dockerfile
+++ b/packaging/win32-x64/Dockerfile
@@ -0,0 +1,8 @@
+FROM debian:jessie
+MAINTAINER Lovell Fuller <npm@lovell.info>
+
+# Create Debian-based container suitable for post-processing Windows x64 binaries
+
+RUN apt-get update && apt-get install -y curl zip advancecomp
+
+ENV PLATFORM=win32-x64
--- a/preinstall.sh
+++ b/preinstall.sh
@@ -2,6 +2,8 @@

 # Use of this script is deprecated

+echo
+echo "WARNING: This script will stop working at the end of 2016"
 echo
 echo "WARNING: This script is no longer required on most 64-bit Linux systems when using sharp v0.12.0+"
 echo
@@ -10,10 +12,11 @@ echo
 echo "If you really, really need this script, it will attempt"
 echo "to globally install libvips if not already available."
 echo
+sleep 5

-vips_version_minimum=8.3.1
+vips_version_minimum=8.3.3
 vips_version_latest_major_minor=8.3
-vips_version_latest_patch=1
+vips_version_latest_patch=3

 openslide_version_minimum=3.4.0
 openslide_version_latest_major_minor=3.4
--- a/src/common.cc
+++ b/src/common.cc
@@ -1,32 +1,53 @@
 #include <cstdlib>
 #include <string>
 #include <string.h>
+
+#include <node.h>
+#include <node_buffer.h>
 #include <vips/vips8>

+#include "nan.h"
 #include "common.h"

-// Verify platform and compiler compatibility
-
-#if (VIPS_MAJOR_VERSION < 8 || (VIPS_MAJOR_VERSION == 8 && VIPS_MINOR_VERSION < 2))
-#error libvips version 8.2.0+ required - see sharp.dimens.io/page/install
-#endif
-
-#if ((!defined(__clang__)) && defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)))
-#error GCC version 4.6+ is required for C++11 features - see sharp.dimens.io/page/install#prerequisites
-#endif
-
-#if (defined(__clang__) && defined(__has_feature))
-#if (!__has_feature(cxx_range_for))
-#error clang version 3.0+ is required for C++11 features - see sharp.dimens.io/page/install#prerequisites
-#endif
-#endif
-
-#define EXIF_IFD0_ORIENTATION "exif-ifd0-Orientation"
-
 using vips::VImage;

 namespace sharp {

+  // Convenience methods to access the attributes of a v8::Object
+  bool HasAttr(v8::Handle<v8::Object> obj, std::string attr) {
+    return Nan::Has(obj, Nan::New(attr).ToLocalChecked()).FromJust();
+  }
+  std::string AttrAsStr(v8::Handle<v8::Object> obj, std::string attr) {
+    return *Nan::Utf8String(Nan::Get(obj, Nan::New(attr).ToLocalChecked()).ToLocalChecked());
+  }
+
+  // Create an InputDescriptor instance from a v8::Object describing an input image
+  InputDescriptor* CreateInputDescriptor(
+    v8::Handle<v8::Object> input, std::vector<v8::Local<v8::Object>> buffersToPersist
+  ) {
+    Nan::HandleScope();
+    InputDescriptor *descriptor = new InputDescriptor;
+    if (HasAttr(input, "file")) {
+      descriptor->file = AttrAsStr(input, "file");
+    } else {
+      v8::Local<v8::Object> buffer = AttrAs<v8::Object>(input, "buffer");
+      descriptor->bufferLength = node::Buffer::Length(buffer);
+      descriptor->buffer = node::Buffer::Data(buffer);
+      buffersToPersist.push_back(buffer);
+    }
+    // Density for vector-based input
+    if (HasAttr(input, "density")) {
+      descriptor->density = AttrTo<uint32_t>(input, "density");
+    }
+    // Raw pixel input
+    if (HasAttr(input, "rawChannels")) {
+      descriptor->rawChannels = AttrTo<uint32_t>(input, "rawChannels");
+      descriptor->rawWidth = AttrTo<uint32_t>(input, "rawWidth");
+      descriptor->rawHeight = AttrTo<uint32_t>(input, "rawHeight");
+    }
+    return descriptor;
+  }
+
  // How many tasks are in the queue?
  volatile int counterQueue = 0;

@@ -149,6 +170,73 @@ namespace sharp {
    return imageType;
  }

+  /*
+    Open an image from the given InputDescriptor (filesystem, compressed buffer, raw pixel data)
+  */
+  std::tuple<VImage, ImageType> OpenInput(InputDescriptor *descriptor, VipsAccess accessMethod) {
+    VImage image;
+    ImageType imageType;
+    if (descriptor->buffer != nullptr) {
+      // From buffer
+      if (descriptor->rawChannels > 0) {
+        // Raw, uncompressed pixel data
+        image = VImage::new_from_memory(descriptor->buffer, descriptor->bufferLength,
+          descriptor->rawWidth, descriptor->rawHeight, descriptor->rawChannels, VIPS_FORMAT_UCHAR);
+        if (descriptor->rawChannels < 3) {
+          image.get_image()->Type = VIPS_INTERPRETATION_B_W;
+        } else {
+          image.get_image()->Type = VIPS_INTERPRETATION_sRGB;
+        }
+        imageType = ImageType::RAW;
+      } else {
+        // Compressed data
+        imageType = DetermineImageType(descriptor->buffer, descriptor->bufferLength);
+        if (imageType != ImageType::UNKNOWN) {
+          try {
+            vips::VOption *option = VImage::option()->set("access", accessMethod);
+            if (imageType == ImageType::SVG || imageType == ImageType::PDF) {
+              option->set("dpi", static_cast<double>(descriptor->density));
+            }
+            if (imageType == ImageType::MAGICK) {
+              option->set("density", std::to_string(descriptor->density).data());
+            }
+            image = VImage::new_from_buffer(descriptor->buffer, descriptor->bufferLength, nullptr, option);
+            if (imageType == ImageType::SVG || imageType == ImageType::PDF || imageType == ImageType::MAGICK) {
+              SetDensity(image, descriptor->density);
+            }
+          } catch (...) {
+            throw vips::VError("Input buffer has corrupt header");
+          }
+        } else {
+          throw vips::VError("Input buffer contains unsupported image format");
+        }
+      }
+    } else {
+      // From filesystem
+      imageType = DetermineImageType(descriptor->file.data());
+      if (imageType != ImageType::UNKNOWN) {
+        try {
+          vips::VOption *option = VImage::option()->set("access", accessMethod);
+          if (imageType == ImageType::SVG || imageType == ImageType::PDF) {
+            option->set("dpi", static_cast<double>(descriptor->density));
+          }
+          if (imageType == ImageType::MAGICK) {
+            option->set("density", std::to_string(descriptor->density).data());
+          }
+          image = VImage::new_from_file(descriptor->file.data(), option);
+          if (imageType == ImageType::SVG || imageType == ImageType::PDF || imageType == ImageType::MAGICK) {
+            SetDensity(image, descriptor->density);
+          }
+        } catch (...) {
+          throw vips::VError("Input file has corrupt header");
+        }
+      } else {
+        throw vips::VError("Input file is missing or of an unsupported image format");
+      }
+    }
+    return std::make_tuple(image, imageType);
+  }
+
  /*
    Does this image have an embedded profile?
  */
@@ -342,4 +430,13 @@ namespace sharp {
    );
  }

+  /*
+    Get interpretation type from string
+  */
+  VipsInterpretation GetInterpretation(std::string const typeStr) {
+    return static_cast<VipsInterpretation>(
+      vips_enum_from_nick(nullptr, VIPS_TYPE_INTERPRETATION, typeStr.data())
+    );
+  }
+
 }  // namespace sharp
--- a/src/common.h
+++ b/src/common.h
@@ -4,12 +4,70 @@
 #include <string>
 #include <tuple>

+#include <node.h>
 #include <vips/vips8>

+#include "nan.h"
+
+// Verify platform and compiler compatibility
+
+#if (VIPS_MAJOR_VERSION < 8 || (VIPS_MAJOR_VERSION == 8 && VIPS_MINOR_VERSION < 3))
+#error libvips version 8.3.x required - see sharp.dimens.io/page/install
+#endif
+
+#if ((!defined(__clang__)) && defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)))
+#error GCC version 4.6+ is required for C++11 features - see sharp.dimens.io/page/install#prerequisites
+#endif
+
+#if (defined(__clang__) && defined(__has_feature))
+#if (!__has_feature(cxx_range_for))
+#error clang version 3.0+ is required for C++11 features - see sharp.dimens.io/page/install#prerequisites
+#endif
+#endif
+
+#define EXIF_IFD0_ORIENTATION "exif-ifd0-Orientation"
+
 using vips::VImage;

 namespace sharp {

+  struct InputDescriptor {
+    std::string name;
+    std::string file;
+    char *buffer;
+    size_t bufferLength;
+    int density;
+    int rawChannels;
+    int rawWidth;
+    int rawHeight;
+
+    InputDescriptor():
+      buffer(nullptr),
+      bufferLength(0),
+      density(72),
+      rawChannels(0),
+      rawWidth(0),
+      rawHeight(0) {}
+  };
+
+  // Convenience methods to access the attributes of a v8::Object
+  bool HasAttr(v8::Handle<v8::Object> obj, std::string attr);
+  std::string AttrAsStr(v8::Handle<v8::Object> obj, std::string attr);
+  template<typename T> v8::Local<T> AttrAs(v8::Handle<v8::Object> obj, std::string attr) {
+    return Nan::Get(obj, Nan::New(attr).ToLocalChecked()).ToLocalChecked().As<T>();
+  }
+  template<typename T> T AttrTo(v8::Handle<v8::Object> obj, std::string attr) {
+    return Nan::To<T>(Nan::Get(obj, Nan::New(attr).ToLocalChecked()).ToLocalChecked()).FromJust();
+  }
+  template<typename T> T AttrTo(v8::Handle<v8::Object> obj, int attr) {
+    return Nan::To<T>(Nan::Get(obj, attr).ToLocalChecked()).FromJust();
+  }
+
+  // Create an InputDescriptor instance from a v8::Object describing an input image
+  InputDescriptor* CreateInputDescriptor(
+    v8::Handle<v8::Object> input, std::vector<v8::Local<v8::Object>> buffersToPersist
+  );
+
  enum class ImageType {
    JPEG,
    PNG,
@@ -57,6 +115,11 @@ namespace sharp {
  */
  ImageType DetermineImageType(char const *file);

+  /*
+    Open an image from the given InputDescriptor (filesystem, compressed buffer, raw pixel data)
+  */
+  std::tuple<VImage, ImageType> OpenInput(InputDescriptor *descriptor, VipsAccess accessMethod);
+
  /*
    Does this image have an embedded profile?
  */
@@ -133,6 +196,11 @@ namespace sharp {
  */
  VipsOperationBoolean GetBooleanOperation(std::string const opStr);

+  /*
+    Get interpretation type from string
+  */
+  VipsInterpretation GetInterpretation(std::string const typeStr);
+
 }  // namespace sharp

 #endif  // SRC_COMMON_H_
--- a/src/metadata.cc
+++ b/src/metadata.cc
@@ -1,135 +1,54 @@
+#include <numeric>
+
 #include <node.h>
 #include <vips/vips8>

 #include "nan.h"
-
 #include "common.h"
 #include "metadata.h"

-using v8::Handle;
-using v8::Local;
-using v8::Value;
-using v8::Object;
-using v8::Number;
-using v8::String;
-using v8::Boolean;
-using v8::Function;
-using v8::Exception;
-
-using Nan::AsyncQueueWorker;
-using Nan::AsyncWorker;
-using Nan::Callback;
-using Nan::HandleScope;
-using Nan::Utf8String;
-using Nan::Has;
-using Nan::Get;
-using Nan::Set;
-using Nan::New;
-using Nan::NewBuffer;
-using Nan::Null;
-using Nan::Error;
-
-using vips::VImage;
-using vips::VError;
-
-using sharp::ImageType;
-using sharp::ImageTypeId;
-using sharp::DetermineImageType;
-using sharp::HasProfile;
-using sharp::HasAlpha;
-using sharp::ExifOrientation;
-using sharp::HasDensity;
-using sharp::GetDensity;
-using sharp::FreeCallback;
-using sharp::counterQueue;
-
-struct MetadataBaton {
-  // Input
-  std::string fileIn;
-  char *bufferIn;
-  size_t bufferInLength;
-  // Output
-  std::string format;
-  int width;
-  int height;
-  std::string space;
-  int channels;
-  int density;
-  bool hasProfile;
-  bool hasAlpha;
-  int orientation;
-  char *exif;
-  size_t exifLength;
-  char *icc;
-  size_t iccLength;
-  std::string err;
-
-  MetadataBaton():
-    bufferInLength(0),
-    density(0),
-    orientation(0),
-    exifLength(0),
-    iccLength(0) {}
-};
-
-class MetadataWorker : public AsyncWorker {
+class MetadataWorker : public Nan::AsyncWorker {
 public:
-  MetadataWorker(Callback *callback, MetadataBaton *baton, const Local<Object> &bufferIn) :
-    AsyncWorker(callback), baton(baton) {
-      if (baton->bufferInLength > 0) {
-        SaveToPersistent("bufferIn", bufferIn);
+  MetadataWorker(
+    Nan::Callback *callback, MetadataBaton *baton,
+    std::vector<v8::Local<v8::Object>> const buffersToPersist
+  ) : Nan::AsyncWorker(callback), baton(baton), buffersToPersist(buffersToPersist) {
+    // Protect Buffer objects from GC, keyed on index
+    std::accumulate(buffersToPersist.begin(), buffersToPersist.end(), 0,
+      [this](uint32_t index, v8::Local<v8::Object> const buffer) -> uint32_t {
+        SaveToPersistent(index, buffer);
+        return index + 1;
      }
-    }
+    );
+  }
  ~MetadataWorker() {}

  void Execute() {
    // Decrement queued task counter
-    g_atomic_int_dec_and_test(&counterQueue);
+    g_atomic_int_dec_and_test(&sharp::counterQueue);

-    ImageType imageType = ImageType::UNKNOWN;
-    VImage image;
-    if (baton->bufferInLength > 0) {
-      // From buffer
-      imageType = DetermineImageType(baton->bufferIn, baton->bufferInLength);
-      if (imageType != ImageType::UNKNOWN) {
-        try {
-          image = VImage::new_from_buffer(baton->bufferIn, baton->bufferInLength, nullptr);
-        } catch (...) {
-          (baton->err).append("Input buffer has corrupt header");
-          imageType = ImageType::UNKNOWN;
-        }
-      } else {
-        (baton->err).append("Input buffer contains unsupported image format");
-      }
-    } else {
-      // From file
-      imageType = DetermineImageType(baton->fileIn.data());
-      if (imageType != ImageType::UNKNOWN) {
-        try {
-          image = VImage::new_from_file(baton->fileIn.data());
-        } catch (...) {
-          (baton->err).append("Input file has corrupt header");
-          imageType = ImageType::UNKNOWN;
-        }
-      } else {
-        (baton->err).append("Input file is missing or of an unsupported image format");
-      }
+    vips::VImage image;
+    sharp::ImageType imageType = sharp::ImageType::UNKNOWN;
+    try {
+      std::tie(image, imageType) = OpenInput(baton->input, VIPS_ACCESS_SEQUENTIAL);
+    } catch (vips::VError const &err) {
+      (baton->err).append(err.what());
    }
-    if (imageType != ImageType::UNKNOWN) {
+    if (imageType != sharp::ImageType::UNKNOWN) {
      // Image type
-      baton->format = ImageTypeId(imageType);
+      baton->format = sharp::ImageTypeId(imageType);
      // VipsImage attributes
      baton->width = image.width();
      baton->height = image.height();
      baton->space = vips_enum_nick(VIPS_TYPE_INTERPRETATION, image.interpretation());
      baton->channels = image.bands();
-      if (HasDensity(image)) {
-        baton->density = GetDensity(image);
+      if (sharp::HasDensity(image)) {
+        baton->density = sharp::GetDensity(image);
      }
-      baton->hasProfile = HasProfile(image);
+      baton->hasProfile = sharp::HasProfile(image);
      // Derived attributes
-      baton->hasAlpha = HasAlpha(image);
-      baton->orientation = ExifOrientation(image);
+      baton->hasAlpha = sharp::HasAlpha(image);
+      baton->orientation = sharp::ExifOrientation(image);
      // EXIF
      if (image.get_typeof(VIPS_META_EXIF_NAME) == VIPS_TYPE_BLOB) {
        size_t exifLength;
@@ -147,53 +66,59 @@ class MetadataWorker : public AsyncWorker {
        baton->iccLength = iccLength;
      }
    }
+
    // Clean up
    vips_error_clear();
    vips_thread_shutdown();
  }

  void HandleOKCallback () {
-    HandleScope();
+    using Nan::New;
+    using Nan::Set;
+    Nan::HandleScope();

-    Local<Value> argv[2] = { Null(), Null() };
+    v8::Local<v8::Value> argv[2] = { Nan::Null(), Nan::Null() };
    if (!baton->err.empty()) {
-      // Error
-      argv[0] = Error(baton->err.data());
+      argv[0] = Nan::Error(baton->err.data());
    } else {
      // Metadata Object
-      Local<Object> info = New<Object>();
-      Set(info, New("format").ToLocalChecked(), New<String>(baton->format).ToLocalChecked());
-      Set(info, New("width").ToLocalChecked(), New<Number>(baton->width));
-      Set(info, New("height").ToLocalChecked(), New<Number>(baton->height));
-      Set(info, New("space").ToLocalChecked(), New<String>(baton->space).ToLocalChecked());
-      Set(info, New("channels").ToLocalChecked(), New<Number>(baton->channels));
+      v8::Local<v8::Object> info = New<v8::Object>();
+      Set(info, New("format").ToLocalChecked(), New<v8::String>(baton->format).ToLocalChecked());
+      Set(info, New("width").ToLocalChecked(), New<v8::Uint32>(baton->width));
+      Set(info, New("height").ToLocalChecked(), New<v8::Uint32>(baton->height));
+      Set(info, New("space").ToLocalChecked(), New<v8::String>(baton->space).ToLocalChecked());
+      Set(info, New("channels").ToLocalChecked(), New<v8::Uint32>(baton->channels));
      if (baton->density > 0) {
-        Set(info, New("density").ToLocalChecked(), New<Number>(baton->density));
+        Set(info, New("density").ToLocalChecked(), New<v8::Uint32>(baton->density));
      }
-      Set(info, New("hasProfile").ToLocalChecked(), New<Boolean>(baton->hasProfile));
-      Set(info, New("hasAlpha").ToLocalChecked(), New<Boolean>(baton->hasAlpha));
+      Set(info, New("hasProfile").ToLocalChecked(), New<v8::Boolean>(baton->hasProfile));
+      Set(info, New("hasAlpha").ToLocalChecked(), New<v8::Boolean>(baton->hasAlpha));
      if (baton->orientation > 0) {
-        Set(info, New("orientation").ToLocalChecked(), New<Number>(baton->orientation));
+        Set(info, New("orientation").ToLocalChecked(), New<v8::Uint32>(baton->orientation));
      }
      if (baton->exifLength > 0) {
        Set(info,
          New("exif").ToLocalChecked(),
-          NewBuffer(baton->exif, baton->exifLength, FreeCallback, nullptr).ToLocalChecked()
+          Nan::NewBuffer(baton->exif, baton->exifLength, sharp::FreeCallback, nullptr).ToLocalChecked()
        );
      }
      if (baton->iccLength > 0) {
        Set(info,
          New("icc").ToLocalChecked(),
-          NewBuffer(baton->icc, baton->iccLength, FreeCallback, nullptr).ToLocalChecked()
+          Nan::NewBuffer(baton->icc, baton->iccLength, sharp::FreeCallback, nullptr).ToLocalChecked()
        );
      }
      argv[1] = info;
    }

-    // Dispose of Persistent wrapper around input Buffer so it can be garbage collected
-    if (baton->bufferInLength > 0) {
-      GetFromPersistent("bufferIn");
-    }
+    // Dispose of Persistent wrapper around input Buffers so they can be garbage collected
+    std::accumulate(buffersToPersist.begin(), buffersToPersist.end(), 0,
+      [this](uint32_t index, v8::Local<v8::Object> const buffer) -> uint32_t {
+        GetFromPersistent(index);
+        return index + 1;
+      }
+    );
+    delete baton->input;
    delete baton;

    // Return to JavaScript
@@ -202,32 +127,27 @@ class MetadataWorker : public AsyncWorker {

 private:
  MetadataBaton* baton;
+  std::vector<v8::Local<v8::Object>> buffersToPersist;
 };

 /*
  metadata(options, callback)
 */
 NAN_METHOD(metadata) {
-  HandleScope();
+  // Input Buffers must not undergo GC compaction during processing
+  std::vector<v8::Local<v8::Object>> buffersToPersist;

  // V8 objects are converted to non-V8 types held in the baton struct
  MetadataBaton *baton = new MetadataBaton;
-  Local<Object> options = info[0].As<Object>();
+  v8::Local<v8::Object> options = info[0].As<v8::Object>();

-  // Input filename
-  baton->fileIn = *Utf8String(Get(options, New("fileIn").ToLocalChecked()).ToLocalChecked());
-  // Input Buffer object
-  Local<Object> bufferIn;
-  if (node::Buffer::HasInstance(Get(options, New("bufferIn").ToLocalChecked()).ToLocalChecked())) {
-    bufferIn = Get(options, New("bufferIn").ToLocalChecked()).ToLocalChecked().As<Object>();
-    baton->bufferInLength = node::Buffer::Length(bufferIn);
-    baton->bufferIn = node::Buffer::Data(bufferIn);
-  }
+  // Input
+  baton->input = sharp::CreateInputDescriptor(sharp::AttrAs<v8::Object>(options, "input"), buffersToPersist);

  // Join queue for worker thread
-  Callback *callback = new Callback(info[1].As<Function>());
-  AsyncQueueWorker(new MetadataWorker(callback, baton, bufferIn));
+  Nan::Callback *callback = new Nan::Callback(info[1].As<v8::Function>());
+  Nan::AsyncQueueWorker(new MetadataWorker(callback, baton, buffersToPersist));

  // Increment queued task counter
-  g_atomic_int_inc(&counterQueue);
+  g_atomic_int_inc(&sharp::counterQueue);
 }
--- a/src/metadata.h
+++ b/src/metadata.h
@@ -2,6 +2,41 @@
 #define SRC_METADATA_H_

 #include "nan.h"
+#include "common.h"
+
+struct MetadataBaton {
+  // Input
+  sharp::InputDescriptor *input;
+  // Output
+  std::string format;
+  int width;
+  int height;
+  std::string space;
+  int channels;
+  int density;
+  bool hasProfile;
+  bool hasAlpha;
+  int orientation;
+  char *exif;
+  size_t exifLength;
+  char *icc;
+  size_t iccLength;
+  std::string err;
+
+  MetadataBaton():
+    input(nullptr),
+    width(0),
+    height(0),
+    channels(0),
+    density(0),
+    hasProfile(false),
+    hasAlpha(false),
+    orientation(0),
+    exif(nullptr),
+    exifLength(0),
+    icc(nullptr),
+    iccLength(0) {}
+};

 NAN_METHOD(metadata);

--- a/src/operations.cc
+++ b/src/operations.cc
@@ -396,7 +396,8 @@ namespace sharp {
    Perform boolean/bitwise operation on image color channels - results in one channel image
  */
  VImage Bandbool(VImage image, VipsOperationBoolean const boolean) {
-    return image.bandbool(boolean);
+    image = image.bandbool(boolean);
+    return image.copy(VImage::option()->set("interpretation", VIPS_INTERPRETATION_B_W));
  }

  /*
--- a/src/pipeline.cc
+++ b/src/pipeline.cc
--- a/src/pipeline.h
+++ b/src/pipeline.h
@@ -6,6 +6,7 @@
 #include <vips/vips8>

 #include "nan.h"
+#include "common.h"

 NAN_METHOD(pipeline);

@@ -18,30 +19,20 @@ enum class Canvas {
 };

 struct PipelineBaton {
-  std::string fileIn;
-  char *bufferIn;
-  size_t bufferInLength;
+  sharp::InputDescriptor *input;
  std::string iccProfilePath;
  int limitInputPixels;
-  int density;
-  int rawWidth;
-  int rawHeight;
-  int rawChannels;
  std::string formatOut;
  std::string fileOut;
  void *bufferOut;
  size_t bufferOutLength;
-  std::string overlayFileIn;
-  char *overlayBufferIn;
-  size_t overlayBufferInLength;
+  sharp::InputDescriptor *overlay;
  int overlayGravity;
  int overlayXOffset;
  int overlayYOffset;
  bool overlayTile;
  bool overlayCutout;
-  std::string booleanFileIn;
-  char *booleanBufferIn;
-  size_t booleanBufferInLength;
+  std::vector<sharp::InputDescriptor *> joinChannelIn;
  int topOffsetPre;
  int leftOffsetPre;
  int widthPre;
@@ -96,31 +87,26 @@ struct PipelineBaton {
  int convKernelHeight;
  double convKernelScale;
  double convKernelOffset;
-  VipsOperationBoolean bandBoolOp;
+  sharp::InputDescriptor *boolean;
  VipsOperationBoolean booleanOp;
+  VipsOperationBoolean bandBoolOp;
  int extractChannel;
+  VipsInterpretation colourspace;
  int tileSize;
  int tileOverlap;
  VipsForeignDzContainer tileContainer;
  VipsForeignDzLayout tileLayout;

  PipelineBaton():
-    bufferInLength(0),
+    input(nullptr),
    limitInputPixels(0),
-    density(72),
-    rawWidth(0),
-    rawHeight(0),
-    rawChannels(0),
-    formatOut(""),
-    fileOut(""),
    bufferOutLength(0),
-    overlayBufferInLength(0),
+    overlay(nullptr),
    overlayGravity(0),
    overlayXOffset(-1),
    overlayYOffset(-1),
    overlayTile(false),
    overlayCutout(false),
-    booleanBufferInLength(0),
    topOffsetPre(-1),
    topOffsetPost(-1),
    channels(0),
@@ -160,9 +146,11 @@ struct PipelineBaton {
    convKernelHeight(0),
    convKernelScale(0.0),
    convKernelOffset(0.0),
-    bandBoolOp(VIPS_OPERATION_BOOLEAN_LAST),
+    boolean(nullptr),
    booleanOp(VIPS_OPERATION_BOOLEAN_LAST),
+    bandBoolOp(VIPS_OPERATION_BOOLEAN_LAST),
    extractChannel(-1),
+    colourspace(VIPS_INTERPRETATION_LAST),
    tileSize(256),
    tileOverlap(0),
    tileContainer(VIPS_FOREIGN_DZ_CONTAINER_FS),
--- a/test/bench/package.json
+++ b/test/bench/package.json
@@ -8,14 +8,14 @@
    "test": "VIPS_WARNING=0 node perf && node random && node parallel"
  },
  "devDependencies": {
-    "async": "^1.5.2",
-    "benchmark": "^2.1.0",
-    "gm": "^1.22.0",
+    "async": "^2.0.1",
+    "benchmark": "^2.1.1",
+    "gm": "^1.23.0",
    "imagemagick": "^0.1.3",
    "imagemagick-native": "^1.9.2",
-    "jimp": "^0.2.24",
+    "jimp": "^0.2.27",
    "lwip": "^0.0.9",
-    "semver": "^5.1.0"
+    "semver": "^5.3.0"
  },
  "license": "Apache-2.0",
  "engines": {
--- a/test/fixtures/expected/joinChannel-cmyk.jpg
+++ b/test/fixtures/expected/joinChannel-cmyk.jpg
--- a/test/fixtures/expected/joinChannel-rgb.jpg
+++ b/test/fixtures/expected/joinChannel-rgb.jpg
--- a/test/fixtures/expected/joinChannel-rgba.png
+++ b/test/fixtures/expected/joinChannel-rgba.png
--- a/test/fixtures/expected/output.greyscale-single.jpg
+++ b/test/fixtures/expected/output.greyscale-single.jpg
--- a/test/fixtures/index.js
+++ b/test/fixtures/index.js
@@ -80,6 +80,7 @@ module.exports = {
  inputPngAlphaPremultiplicationSmall: getPath('alpha-premultiply-1024x768-paper.png'),
  inputPngAlphaPremultiplicationLarge: getPath('alpha-premultiply-2048x1536-paper.png'),
  inputPngBooleanNoAlpha: getPath('bandbool.png'),
+  inputPngTestJoinChannel: getPath('testJoinChannel.png'),

  inputWebP: getPath('4.webp'), // http://www.gstatic.com/webp/gallery/4.webp
  inputWebPWithTransparency: getPath('5_webp_a.webp'), // http://www.gstatic.com/webp/gallery3/5_webp_a.webp
--- a/test/fixtures/stripesH.png
+++ b/test/fixtures/stripesH.png
--- a/test/fixtures/stripesV.png
+++ b/test/fixtures/stripesV.png
--- a/test/fixtures/testJoinChannel.png
+++ b/test/fixtures/testJoinChannel.png
--- a/test/leak/sharp.supp
+++ b/test/leak/sharp.supp
@@ -29,7 +29,16 @@
  ...
  fun:jpeg_finish_compress
 }
-
+{
+  value_jpeg_obj
+  Memcheck:Value8
+  obj:*/libjpeg.so*
+}
+{
+  cond_jpeg_obj
+  Memcheck:Cond
+  obj:*/libjpeg.so*
+}
 # libpng
 {
  cond_libpng_png_read_row
--- a/test/unit/bandbool.js
+++ b/test/unit/bandbool.js
@@ -15,6 +15,7 @@ describe('Bandbool per-channel boolean operations', function() {
    it(op + ' operation', function(done) {
      sharp(fixtures.inputPngBooleanNoAlpha)
        .bandbool(op)
+        .toColourspace('b-w')
        .toBuffer(function(err, data, info) {
          if (err) throw err;
          assert.strictEqual(200, info.width);
@@ -25,6 +26,15 @@ describe('Bandbool per-channel boolean operations', function() {
    });
  });

+  it('sRGB image retains 3 channels', function(done) {
+    sharp(fixtures.inputJpg)
+      .bandbool('and')
+      .toBuffer(function(err, data, info) {
+        assert.strictEqual(3, info.channels);
+        done();
+      });
+  });          
+
  it('Invalid operation', function() {
    assert.throws(function() {
      sharp().bandbool('fail');
--- a/test/unit/boolean.js
+++ b/test/unit/boolean.js
@@ -40,6 +40,23 @@ describe('Boolean operation between two images', function() {
        });
    });

+    it(op + ' operation, raw', function(done) {
+      sharp(fixtures.inputJpgBooleanTest)
+        .raw()
+        .toBuffer(function(err, data, info) {
+          if (err) throw err;
+          sharp(fixtures.inputJpg)
+            .resize(320, 240)
+            .boolean(data, op, { raw: info })
+            .toBuffer(function(err, data, info) {
+              if (err) throw err;
+              assert.strictEqual(320, info.width);
+              assert.strictEqual(240, info.height);
+              fixtures.assertSimilar(fixtures.expected('boolean_' + op + '_result.jpg'), data, done);
+            });
+        });
+    });
+
  });

  it('Invalid operation', function() {
--- a/test/unit/colourspace.js
+++ b/test/unit/colourspace.js
@@ -29,6 +29,20 @@ describe('Colour space conversion', function() {
      .toFile(fixtures.path('output.greyscale-not.jpg'), done);
  });

+  it('Greyscale with single channel output', function(done) {
+    sharp(fixtures.inputJpg)
+      .resize(320, 240)
+      .greyscale()
+      .toColourspace('b-w')
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        assert.strictEqual(1, info.channels);
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        fixtures.assertSimilar(fixtures.expected('output.greyscale-single.jpg'), data, done);
+      });
+  });
+
  if (sharp.format.tiff.input.file && sharp.format.webp.output.buffer) {
    it('From 1-bit TIFF to sRGB WebP [slow]', function(done) {
      sharp(fixtures.inputTiff)
@@ -79,4 +93,10 @@ describe('Colour space conversion', function() {
      });
  });

+  it('Invalid input', function() {
+    assert.throws(function() {
+      sharp(fixtures.inputJpg)
+        .toColourspace(null);
+    });
+  });
 });
--- a/test/unit/extract.js
+++ b/test/unit/extract.js
@@ -181,6 +181,7 @@ describe('Partial image extraction', function() {
        .extract({ left: 3000, top: 10, width: 10, height: 10 })
        .toBuffer(function(err) {
          assert(err instanceof Error);
+          assert.strictEqual(err.message, "extract_area: bad extract area\n");
          done();
        });
    });
--- a/test/unit/extractChannel.js
+++ b/test/unit/extractChannel.js
@@ -69,4 +69,13 @@ describe('Image channel extraction', function() {
    });
  });

+  it('Non-existant channel', function(done) {
+    sharp(fixtures.inputPng)
+      .extractChannel(1)
+      .toBuffer(function(err) {
+        assert(err instanceof Error);
+        done();
+      });
+  });
+
 });
--- a/test/unit/interpolation.js
+++ b/test/unit/interpolation.js
@@ -60,12 +60,4 @@ describe('Interpolators and kernels', function() {
    });
  });

-  describe('deprecated interpolateWith method still works', function() {
-    it('resize then interpolateWith', function() {
-      sharp().resize(1, 1).interpolateWith('bicubic');
-    });
-    it('interpolateWith then resize', function() {
-      sharp().interpolateWith('bicubic').resize(1, 1);
-    });
-  });
 });
--- a/test/unit/joinChannel.js
+++ b/test/unit/joinChannel.js
@@ -0,0 +1,151 @@
+'use strict';
+
+var assert = require('assert');
+var fs = require('fs');
+var sharp = require('../../index');
+var fixtures = require('../fixtures');
+var BluebirdPromise = require('bluebird');
+
+describe('Image channel insertion', function() {
+
+  it('Grayscale to RGB, buffer', function(done) {
+    sharp(fixtures.inputPng) // gray -> red
+      .resize(320, 240)
+      .joinChannel(fixtures.inputPngTestJoinChannel) // new green channel
+      .joinChannel(fixtures.inputPngStripesH)        // new blue channel
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        assert.strictEqual(3, info.channels);
+        fixtures.assertSimilar(fixtures.expected('joinChannel-rgb.jpg'), data, done);
+      });
+  });
+
+  it('Grayscale to RGB, file', function(done) {
+    sharp(fixtures.inputPng) // gray -> red
+      .resize(320, 240)
+      .joinChannel(fs.readFileSync(fixtures.inputPngTestJoinChannel)) // new green channel
+      .joinChannel(fs.readFileSync(fixtures.inputPngStripesH))        // new blue channel
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        assert.strictEqual(3, info.channels);
+        fixtures.assertSimilar(fixtures.expected('joinChannel-rgb.jpg'), data, done);
+      });
+  });
+
+  it('Grayscale to RGBA, buffer', function(done) {
+    sharp(fixtures.inputPng) // gray -> red
+      .resize(320, 240)
+      .joinChannel([fixtures.inputPngTestJoinChannel,
+                    fixtures.inputPngStripesH,
+                    fixtures.inputPngStripesV]) // new green + blue + alpha channel
+      .toColourspace(sharp.colourspace.srgb)
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        assert.strictEqual(4, info.channels);
+        fixtures.assertSimilar(fixtures.expected('joinChannel-rgba.png'), data, done);
+      });
+  });
+
+  it('Grayscale to RGBA, file', function(done) {
+    sharp(fixtures.inputPng) // gray -> red
+      .resize(320, 240)
+      .joinChannel([fs.readFileSync(fixtures.inputPngTestJoinChannel), // new green channel
+                    fs.readFileSync(fixtures.inputPngStripesH),        // new blue channel
+                    fs.readFileSync(fixtures.inputPngStripesV)])       // new alpha channel
+      .toColourspace('srgb')
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        assert.strictEqual(4, info.channels);
+        fixtures.assertSimilar(fixtures.expected('joinChannel-rgba.png'), data, done);
+      });
+  });
+
+  it('Grayscale to CMYK, buffers', function(done) {
+    sharp(fixtures.inputPng) // gray -> magenta
+      .resize(320, 240)
+      .joinChannel([fs.readFileSync(fixtures.inputPngTestJoinChannel), // new cyan channel
+                    fs.readFileSync(fixtures.inputPngStripesH),        // new yellow channel
+                    fs.readFileSync(fixtures.inputPngStripesV)])       // new black channel
+      .toColorspace('cmyk')
+      .toFormat('jpeg')
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        assert.strictEqual(4, info.channels);
+        fixtures.assertSimilar(fixtures.expected('joinChannel-cmyk.jpg'), data, done);
+      });
+  });
+
+  it('Join raw buffers to RGB', function(done) {
+    BluebirdPromise.all([
+      sharp(fixtures.inputPngTestJoinChannel).toColourspace('b-w').raw().toBuffer(),
+      sharp(fixtures.inputPngStripesH).toColourspace('b-w').raw().toBuffer()
+    ])
+      .then(function(buffers) {
+        sharp(fixtures.inputPng)
+          .resize(320, 240)
+          .joinChannel(buffers,
+                       { raw: {
+                         width: 320,
+                         height: 240,
+                         channels: 1
+                       }})
+          .toBuffer(function(err, data, info) {
+            if (err) throw err;
+            assert.strictEqual(320, info.width);
+            assert.strictEqual(240, info.height);
+            assert.strictEqual(3, info.channels);
+            fixtures.assertSimilar(fixtures.expected('joinChannel-rgb.jpg'), data, done);
+          });
+      })
+      .catch(function(err) {
+        throw err;
+      });
+  });
+
+  it('Grayscale to RGBA, files, two arrays', function(done) {
+    sharp(fixtures.inputPng) // gray -> red
+      .resize(320, 240)
+      .joinChannel([fs.readFileSync(fixtures.inputPngTestJoinChannel)]) // new green channel
+      .joinChannel([fs.readFileSync(fixtures.inputPngStripesH),         // new blue channel
+                    fs.readFileSync(fixtures.inputPngStripesV)])        // new alpha channel
+      .toColourspace('srgb')
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        assert.strictEqual(320, info.width);
+        assert.strictEqual(240, info.height);
+        assert.strictEqual(4, info.channels);
+        fixtures.assertSimilar(fixtures.expected('joinChannel-rgba.png'), data, done);
+      });
+  });
+
+  it('Invalid raw buffer description', function() {
+    assert.throws(function() {
+      sharp().joinChannel(fs.readFileSync(fixtures.inputPng),{raw:{}});
+    });
+  });
+
+  it('Invalid input', function() {
+    assert.throws(function() {
+      sharp(fixtures.inputJpg)
+        .joinChannel(1);
+    });
+  });
+
+  it('No arguments', function() {
+    assert.throws(function() {
+      sharp(fixtures.inputJpg)
+        .joinChannel();
+    });
+  });
+
+});
--- a/test/unit/metadata.js
+++ b/test/unit/metadata.js
@@ -328,6 +328,22 @@ describe('Image metadata', function() {
      });
  });

+  it('Remove metadata from PNG output', function(done) {
+    sharp(fixtures.inputJpgWithExif)
+      .png()
+      .toBuffer(function(err, buffer) {
+        if (err) throw err;
+        sharp(buffer).metadata(function(err, metadata) {
+          if (err) throw err;
+          assert.strictEqual(false, metadata.hasProfile);
+          assert.strictEqual('undefined', typeof metadata.orientation);
+          assert.strictEqual('undefined', typeof metadata.exif);
+          assert.strictEqual('undefined', typeof metadata.icc);
+          done();
+        });
+      });
+  });
+
  it('File input with corrupt header fails gracefully', function(done) {
    sharp(fixtures.inputJpgWithCorruptHeader)
      .metadata(function(err) {
--- a/test/unit/overlay.js
+++ b/test/unit/overlay.js
@@ -154,11 +154,20 @@ describe('Overlays', function() {
    });
  }

-  it('Fail when overlay does not contain alpha channel', function(done) {
+  it('Composite JPEG onto PNG', function(done) {
    sharp(fixtures.inputPngOverlayLayer1)
-      .overlayWith(fixtures.inputJpg)
+      .overlayWith(fixtures.inputJpgWithLandscapeExif1)
      .toBuffer(function(error) {
-        assert.strictEqual(true, error instanceof Error);
+        if (error) return done(error);
+        done();
+      });
+  });
+
+  it('Composite opaque JPEG onto JPEG', function(done) {
+    sharp(fixtures.inputJpg)
+      .overlayWith(fixtures.inputJpgWithLandscapeExif1)
+      .toBuffer(function(error) {
+        if (error) return done(error);
        done();
      });
  });
@@ -528,4 +537,28 @@ describe('Overlays', function() {
      });
  });

+  it('Composite RGBA raw buffer onto JPEG', function(done) {
+    sharp(fixtures.inputPngOverlayLayer1)
+      .raw()
+      .toBuffer(function(err, data, info) {
+        if (err) throw err;
+        sharp(fixtures.inputJpg)
+          .resize(2048, 1536)
+          .overlayWith(data, { raw: info })
+          .toBuffer(function(err, data) {
+            if (err) throw err;
+            fixtures.assertSimilar(fixtures.expected('overlay-jpeg-with-rgb.jpg'), data, done);
+          });
+      });
+  });
+
+  it('Throws an error when called with an invalid file', function(done) {
+    sharp(fixtures.inputJpg)
+      .overlayWith('notfound.png')
+      .toBuffer(function(err) {
+        assert(err instanceof Error);
+        done();
+      });
+  });
+
 });
--- a/test/unit/resize.js
+++ b/test/unit/resize.js
@@ -128,6 +128,29 @@ describe('Resize dimensions', function() {
    done();
  });

+  if (sharp.format.webp.output.buffer) {
+    it('WebP shrink-on-load rounds to zero, ensure recalculation is correct', function(done) {
+      sharp(fixtures.inputJpg)
+        .resize(1080, 607)
+        .webp()
+        .toBuffer(function(err, data, info) {
+          if (err) throw err;
+          assert.strictEqual('webp', info.format);
+          assert.strictEqual(1080, info.width);
+          assert.strictEqual(607, info.height);
+          sharp(data)
+            .resize(233, 131)
+            .toBuffer(function(err, data, info) {
+              if (err) throw err;
+              assert.strictEqual('webp', info.format);
+              assert.strictEqual(233, info.width);
+              assert.strictEqual(131, info.height);
+              done();
+            });
+        });
+    });
+  }
+
  if (sharp.format.tiff.input.file) {
    it('TIFF embed known to cause rounding errors', function(done) {
      sharp(fixtures.inputTiff)
--- a/test/unit/sharpen.js
+++ b/test/unit/sharpen.js
@@ -46,19 +46,21 @@ describe('Sharpen', function() {
      });
  });

-  it('specific radius/levels with alpha channel', function(done) {
-    sharp(fixtures.inputPngWithTransparency)
-      .resize(320, 240)
-      .sharpen(5, 4, 8)
-      .toBuffer(function(err, data, info) {
-        if (err) throw err;
-        assert.strictEqual('png', info.format);
-        assert.strictEqual(4, info.channels);
-        assert.strictEqual(320, info.width);
-        assert.strictEqual(240, info.height);
-        fixtures.assertSimilar(fixtures.expected('sharpen-rgba.png'), data, done);
-      });
-  });
+  if (!process.env.SHARP_TEST_WITHOUT_CACHE) {
+    it('specific radius/levels with alpha channel', function(done) {
+      sharp(fixtures.inputPngWithTransparency)
+        .resize(320, 240)
+        .sharpen(5, 4, 8)
+        .toBuffer(function(err, data, info) {
+          if (err) throw err;
+          assert.strictEqual('png', info.format);
+          assert.strictEqual(4, info.channels);
+          assert.strictEqual(320, info.width);
+          assert.strictEqual(240, info.height);
+          fixtures.assertSimilar(fixtures.expected('sharpen-rgba.png'), data, done);
+        });
+    });
+  }

  it('mild sharpen', function(done) {
    sharp(fixtures.inputJpg)
--- a/test/unit/trim.js
+++ b/test/unit/trim.js
@@ -38,7 +38,7 @@ describe('Trim borders', function() {

  describe('Invalid thresholds', function() {
    [-1, 100, 'fail', {}].forEach(function(threshold) {
-      it(threshold, function() {
+      it(JSON.stringify(threshold), function() {
        assert.throws(function() {
          sharp().trim(threshold);
        });
Author	SHA1	Message	Date
Lovell Fuller	7c06a48ec0	Release v0.16.0	2016-08-18 09:00:04 +01:00
Lovell Fuller	7ada9dbd0d	Changelog update, fix for small leak introduced in `5c5d74a`	2016-08-17 20:56:53 +01:00
Matt Hirsch	5c5d74a903	Add joinChannel and toColourspace/toColorspace operations (#513 )	2016-08-17 15:42:05 +01:00
Lovell Fuller	72354d55a8	Doc and changelog updates #519 #540	2016-08-13 17:24:06 +01:00
cmtt	fc2002fbd0	Add alpha channels, if missing, to overlayWith images (#540 )	2016-08-13 17:19:15 +01:00
Matt Hirsch	82ec2715f1	Prevent bandbool creating a single channel sRGB image (#519 )	2016-08-13 14:55:15 +01:00
Lovell Fuller	ef6e90fb3c	Correct dist name logging in packaging test script	2016-08-13 11:43:13 +01:00
Lovell Fuller	475f0bf120	Refactor packaging scripts, add ARMv7/v8 binaries	2016-08-12 13:40:44 +01:00
Lovell Fuller	e68a14c94c	Dependency version bumps	2016-08-01 20:23:45 +01:00
Lovell Fuller	da0dc28bc4	Remove unescaped module_root_dir as it can contain spaces	2016-08-01 13:44:46 +01:00
Lovell Fuller	e6bfa52b0b	Add raw pixel data support to boolean and withOverlay ops The previously-scattered image opening logic has been refactored to a single ImageDescriptor struct/Object available to both JS and C++ code This removed about 150 LOC but more importantly reduces the complexity of adding/exposing new operations that require an input image.	2016-07-26 23:07:25 +01:00
Lovell Fuller	36bfbdee0d	Add support for using pre-compiled binaries with OSX	2016-07-25 16:32:42 +01:00
Lovell Fuller	7a9a4127a0	Remove deprecated interpolateWith method Version bump dependencies	2016-07-25 16:11:53 +01:00
Lovell Fuller	4f1472d4ff	Upgrade to libvips v8.3.2	2016-07-25 15:30:14 +01:00
Lovell Fuller	032bb7e96b	Ensure ICC profiles are removed from PNG output #521	2016-07-21 16:49:27 +01:00
Lovell Fuller	9ddc817a09	Add WebP availability check to test added in `a5bd68e`	2016-07-21 15:55:34 +01:00
Lovell Fuller	a5bd68ef8c	Recalc after WebP shrink-on-load to avoid rounding errors #508	2016-07-21 15:18:14 +01:00
Lovell Fuller	a2ec3642bf	Alpine now provides vips in its testing repo Resize+sharpen+alpha seems to stack-smash, ignore for now	2016-07-20 20:05:43 +01:00
Lovell Fuller	9647fe1b9f	Reduce size of pre-built binaries by ~5%	2016-07-20 20:03:41 +01:00
Lovell Fuller	762cda75a9	Update libxml2 dependency CVE-2016-4448 #515 Also updates: * libpng as previous version is now unavailable (?) * libjpeg as previous version was pre-release	2016-07-18 12:07:28 +01:00
Matt Hirsch	c39a9b8de9	Prevent boolean errors during extract operation (#509 ) (#511 )	2016-07-16 10:56:15 +01:00
Matt Hirsch	15a577863a	Ensure boolean, bandbool, extractChannel ops occur before sRGB conversion (#504 )	2016-07-13 19:20:50 +01:00