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Faster ICC profile transform via lcms #125

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Lovell Fuller 2014-11-25 22:52:24 +00:00
parent 8460e50ee0
commit 0acf865654
4 changed files with 21 additions and 18 deletions
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icc/sRGB_IEC61966-2-1_black_scaled.icc Normal file
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4
index.js
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@ -20,8 +20,8 @@ var Sharp = function(input) {
// input options
streamIn: false,
sequentialRead: false,
// ICC profile to use when input CMYK image has no embedded profile
iccProfileCmyk: path.join(__dirname, 'icc', 'USWebCoatedSWOP.icc'),
// ICC profiles
iccProfilePath: path.join(__dirname, 'icc') + path.sep,
// resize options
topOffsetPre: -1,
leftOffsetPre: -1,

8
preinstall.sh
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@ -94,7 +94,7 @@ case $(uname -s) in
trusty|utopic|qiana|rebecca)
# Ubuntu 14, Mint 17
echo "Installing libvips dependencies via apt-get"
apt-get install -y automake build-essential gobject-introspection gtk-doc-tools libglib2.0-dev libjpeg-turbo8-dev libpng12-dev libwebp-dev libtiff5-dev libexif-dev libxml2-dev swig libmagickwand-dev curl
apt-get install -y automake build-essential gobject-introspection gtk-doc-tools libglib2.0-dev libjpeg-turbo8-dev libpng12-dev libwebp-dev libtiff5-dev libexif-dev liblcms2-dev libxml2-dev swig libmagickwand-dev curl
install_libvips_from_source
;;
precise|wheezy|maya)
@ -102,7 +102,7 @@ case $(uname -s) in
echo "Installing libvips dependencies via apt-get"
add-apt-repository -y ppa:lyrasis/precise-backports
apt-get update
apt-get install -y automake build-essential gobject-introspection gtk-doc-tools libglib2.0-dev libjpeg-turbo8-dev libpng12-dev libwebp-dev libtiff4-dev libexif-dev libxml2-dev swig libmagickwand-dev curl
apt-get install -y automake build-essential gobject-introspection gtk-doc-tools libglib2.0-dev libjpeg-turbo8-dev libpng12-dev libwebp-dev libtiff4-dev libexif-dev liblcms2-dev libxml2-dev swig libmagickwand-dev curl
install_libvips_from_source
;;
*)
@ -119,14 +119,14 @@ case $(uname -s) in
# RHEL/CentOS 7
echo "Installing libvips dependencies via yum"
yum groupinstall -y "Development Tools"
yum install -y gtk-doc libxml2-devel libjpeg-turbo-devel libpng-devel libtiff-devel libexif-devel ImageMagick-devel gobject-introspection-devel libwebp-devel curl
yum install -y gtk-doc libxml2-devel libjpeg-turbo-devel libpng-devel libtiff-devel libexif-devel lcms-devel ImageMagick-devel gobject-introspection-devel libwebp-devel curl
install_libvips_from_source "--prefix=/usr"
;;
"Red Hat Enterprise Linux release 6."*|"CentOS release 6."*|"Scientific Linux release 6."*)
# RHEL/CentOS 6
echo "Installing libvips dependencies via yum"
yum groupinstall -y "Development Tools"
yum install -y gtk-doc libxml2-devel libjpeg-turbo-devel libpng-devel libtiff-devel libexif-devel ImageMagick-devel curl
yum install -y gtk-doc libxml2-devel libjpeg-turbo-devel libpng-devel libtiff-devel libexif-devel lcms-devel ImageMagick-devel curl
yum install -y http://li.nux.ro/download/nux/dextop/el6/x86_64/nux-dextop-release-0-2.el6.nux.noarch.rpm
yum install -y --enablerepo=nux-dextop gobject-introspection-devel
yum install -y http://rpms.famillecollet.com/enterprise/remi-release-6.rpm

27
src/resize.cc
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@ -31,7 +31,7 @@ struct ResizeBaton {
std::string fileIn;
void* bufferIn;
size_t bufferInLength;
std::string iccProfileCmyk;
std::string iccProfilePath;
std::string output;
std::string outputFormat;
void* bufferOut;
@ -271,21 +271,24 @@ class ResizeWorker : public NanAsyncWorker {
// Ensure we're using a device-independent colour space
if (HasProfile(image)) {
// Convert to CIELAB using embedded profile
VipsImage *profile;
if (vips_icc_import(image, &profile, "pcs", VIPS_PCS_XYZ, "embedded", TRUE, NULL)) {
// Convert to sRGB using embedded profile
std::string srgbProfile = baton->iccProfilePath + "sRGB_IEC61966-2-1_black_scaled.icc";
VipsImage *transformed;
if (vips_icc_transform(image, &transformed, srgbProfile.c_str(), "embedded", TRUE, NULL)) {
return Error(baton, hook);
}
vips_object_local(hook, profile);
image = profile;
vips_object_local(hook, transformed);
image = transformed;
} else if (image->Type == VIPS_INTERPRETATION_CMYK) {
// Convert to CIELAB using default "USWebCoatedSWOP" CMYK profile
VipsImage *profile;
if (vips_icc_import(image, &profile, "pcs", VIPS_PCS_XYZ, "input_profile", (baton->iccProfileCmyk).c_str(), NULL)) {
// Convert to sRGB using default "USWebCoatedSWOP" CMYK profile
std::string srgbProfile = baton->iccProfilePath + "sRGB_IEC61966-2-1_black_scaled.icc";
std::string cmykProfile = baton->iccProfilePath + "USWebCoatedSWOP.icc";
VipsImage *transformed;
if (vips_icc_transform(image, &transformed, srgbProfile.c_str(), "input_profile", cmykProfile.c_str(), NULL)) {
return Error(baton, hook);
}
vips_object_local(hook, profile);
image = profile;
vips_object_local(hook, transformed);
image = transformed;
}
// Flatten image to remove alpha channel
@ -831,7 +834,7 @@ NAN_METHOD(resize) {
baton->bufferIn = node::Buffer::Data(buffer);
}
// ICC profile to use when input CMYK image has no embedded profile
baton->iccProfileCmyk = *String::Utf8Value(options->Get(NanNew<String>("iccProfileCmyk"))->ToString());
baton->iccProfilePath = *String::Utf8Value(options->Get(NanNew<String>("iccProfilePath"))->ToString());
// Extract image options
baton->topOffsetPre = options->Get(NanNew<String>("topOffsetPre"))->Int32Value();
baton->leftOffsetPre = options->Get(NanNew<String>("leftOffsetPre"))->Int32Value();