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Fix getImageSize for animated images

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This commit is contained in:
DarthSim
2025-08-16 18:06:16 +03:00
parent 4d19d89ac0
commit 6d36ccba6d
2 changed files with 15 additions and 3 deletions
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14
processing/processing.go
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@@ -88,10 +88,18 @@ func ValidatePreferredFormats() error {
}
func getImageSize(img *vips.Image) (int, int) {
width, height, _, _ := extractMeta(img, 0, true)
width, height := img.Width(), img.Height()
if pages, err := img.GetIntDefault("n-pages", 1); err != nil && pages > 0 {
height /= pages
if img.IsAnimated() {
// Animated images contain multiple frames, and libvips loads them stacked vertically.
// We want to return the size of a single frame
height = img.PageHeight()
}
// If the image is rotated by 90 or 270 degrees, we need to swap width and height
orientation := img.Orientation()
if orientation == 5 || orientation == 6 || orientation == 7 || orientation == 8 {
width, height = height, width
}
return width, height

4
vips/vips.go
View File

@@ -339,6 +339,10 @@ func (img *Image) Height() int {
return int(img.VipsImage.Ysize)
}
func (img *Image) PageHeight() int {
return int(C.vips_image_get_page_height(img.VipsImage))
}
func (img *Image) Pages() int {
p, err := img.GetIntDefault("n-pages", 1)
if err != nil {