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Add chromaSubsampling and isProgressive to metadata #1186

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This commit is contained in:
Lovell Fuller
2018-10-02 17:11:25 +01:00
parent 60438ebfe5
commit 17f942c802
6 changed files with 96 additions and 0 deletions
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12
src/metadata.cc
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@@ -62,6 +62,12 @@ class MetadataWorker : public Nan::AsyncWorker {
if (sharp::HasDensity(image)) {
baton->density = sharp::GetDensity(image);
}
if (image.get_typeof("jpeg-chroma-subsample") == VIPS_TYPE_REF_STRING) {
baton->chromaSubsampling = image.get_string("jpeg-chroma-subsample");
}
if (image.get_typeof("interlaced") == G_TYPE_INT) {
baton->isProgressive = image.get_int("interlaced") == 1;
}
baton->hasProfile = sharp::HasProfile(image);
// Derived attributes
baton->hasAlpha = sharp::HasAlpha(image);
@@ -125,6 +131,12 @@ class MetadataWorker : public Nan::AsyncWorker {
if (baton->density > 0) {
Set(info, New("density").ToLocalChecked(), New<v8::Uint32>(baton->density));
}
if (!baton->chromaSubsampling.empty()) {
Set(info,
New("chromaSubsampling").ToLocalChecked(),
New<v8::String>(baton->chromaSubsampling).ToLocalChecked());
}
Set(info, New("isProgressive").ToLocalChecked(), New<v8::Boolean>(baton->isProgressive));
Set(info, New("hasProfile").ToLocalChecked(), New<v8::Boolean>(baton->hasProfile));
Set(info, New("hasAlpha").ToLocalChecked(), New<v8::Boolean>(baton->hasAlpha));
if (baton->orientation > 0) {

3
src/metadata.h
View File

@@ -31,6 +31,8 @@ struct MetadataBaton {
int channels;
std::string depth;
int density;
std::string chromaSubsampling;
bool isProgressive;
bool hasProfile;
bool hasAlpha;
int orientation;
@@ -50,6 +52,7 @@ struct MetadataBaton {
height(0),
channels(0),
density(0),
isProgressive(false),
hasProfile(false),
hasAlpha(false),
orientation(0),