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Expose IPTC and XMP metadata when available (#1079)

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This commit is contained in:
Oleg Aleynik
2018-01-11 00:12:11 +02:00
committed by Lovell Fuller
parent 8afcb16d8e
commit c4df115948
7 changed files with 57 additions and 2 deletions
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26
src/metadata.cc
View File

@@ -81,6 +81,22 @@ class MetadataWorker : public Nan::AsyncWorker {
memcpy(baton->icc, icc, iccLength);
baton->iccLength = iccLength;
}
// IPTC
if (image.get_typeof(VIPS_META_IPCT_NAME) == VIPS_TYPE_BLOB) {
size_t iptcLength;
void const *iptc = image.get_blob(VIPS_META_IPCT_NAME, &iptcLength);
baton->iptc = static_cast<char *>(g_malloc(iptcLength));
memcpy(baton->iptc, iptc, iptcLength);
baton->iptcLength = iptcLength;
}
// XMP
if (image.get_typeof(VIPS_META_XMP_NAME) == VIPS_TYPE_BLOB) {
size_t xmpLength;
void const *xmp = image.get_blob(VIPS_META_XMP_NAME, &xmpLength);
baton->xmp = static_cast<char *>(g_malloc(xmpLength));
memcpy(baton->xmp, xmp, xmpLength);
baton->xmpLength = xmpLength;
}
}
// Clean up
@@ -123,6 +139,16 @@ class MetadataWorker : public Nan::AsyncWorker {
New("icc").ToLocalChecked(),
Nan::NewBuffer(baton->icc, baton->iccLength, sharp::FreeCallback, nullptr).ToLocalChecked());
}
if (baton->iptcLength > 0) {
Set(info,
New("iptc").ToLocalChecked(),
Nan::NewBuffer(baton->iptc, baton->iptcLength, sharp::FreeCallback, nullptr).ToLocalChecked());
}
if (baton->xmpLength > 0) {
Set(info,
New("xmp").ToLocalChecked(),
Nan::NewBuffer(baton->xmp, baton->xmpLength, sharp::FreeCallback, nullptr).ToLocalChecked());
}
argv[1] = info;
}

10
src/metadata.h
View File

@@ -38,6 +38,10 @@ struct MetadataBaton {
size_t exifLength;
char *icc;
size_t iccLength;
char *iptc;
size_t iptcLength;
char *xmp;
size_t xmpLength;
std::string err;
MetadataBaton():
@@ -52,7 +56,11 @@ struct MetadataBaton {
exif(nullptr),
exifLength(0),
icc(nullptr),
iccLength(0) {}
iccLength(0),
iptc(nullptr),
iptcLength(0),
xmp(nullptr),
xmpLength(0) {}
};
NAN_METHOD(metadata);