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Expose pages metadata for multi-page input images #1205

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Lovell Fuller
2019-01-01 22:10:27 +00:00
parent cc1d4c1a6d
commit cc633589d9
4 changed files with 43 additions and 0 deletions
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12
src/metadata.cc
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@@ -71,6 +71,12 @@ class MetadataWorker : public Nan::AsyncWorker {
if (image.get_typeof("palette-bit-depth") == G_TYPE_INT) {
baton->paletteBitDepth = image.get_int("palette-bit-depth");
}
if (image.get_typeof(VIPS_META_N_PAGES) == G_TYPE_INT) {
baton->pages = image.get_int(VIPS_META_N_PAGES);
}
if (image.get_typeof(VIPS_META_PAGE_HEIGHT) == G_TYPE_INT) {
baton->pageHeight = image.get_int(VIPS_META_PAGE_HEIGHT);
}
baton->hasProfile = sharp::HasProfile(image);
// Derived attributes
baton->hasAlpha = sharp::HasAlpha(image);
@@ -146,6 +152,12 @@ class MetadataWorker : public Nan::AsyncWorker {
if (baton->paletteBitDepth > 0) {
Set(info, New("paletteBitDepth").ToLocalChecked(), New<v8::Uint32>(baton->paletteBitDepth));
}
if (baton->pages > 0) {
Set(info, New("pages").ToLocalChecked(), New<v8::Uint32>(baton->pages));
}
if (baton->pageHeight > 0) {
Set(info, New("pageHeight").ToLocalChecked(), New<v8::Uint32>(baton->pageHeight));
}
Set(info, New("hasProfile").ToLocalChecked(), New<v8::Boolean>(baton->hasProfile));
Set(info, New("hasAlpha").ToLocalChecked(), New<v8::Boolean>(baton->hasAlpha));
if (baton->orientation > 0) {

4
src/metadata.h
View File

@@ -34,6 +34,8 @@ struct MetadataBaton {
std::string chromaSubsampling;
bool isProgressive;
int paletteBitDepth;
int pages;
int pageHeight;
bool hasProfile;
bool hasAlpha;
int orientation;
@@ -55,6 +57,8 @@ struct MetadataBaton {
density(0),
isProgressive(false),
paletteBitDepth(0),
pages(0),
pageHeight(0),
hasProfile(false),
hasAlpha(false),
orientation(0),