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jcupitt · jcupitt · commit 59f9b2cc028f · 2025-04-29T10:57:47.000+01:00
diff --git a/libvips/foreign/tiff2vips.c b/libvips/foreign/tiff2vips.c
@@ -271,6 +271,7 @@
 #include "jpeg.h"
 #endif /*HAVE_JPEG*/
 
+
 /* Aperio TIFFs (svs) use these compression types for jp2k-compressed tiles.
  */
 #define JP2K_YCC 33003
@@ -280,6 +281,11 @@
  */
 #define JP2K_LOSSY 33004
 
+// only in recent libtiffs
+#ifndef TIFFTAG_IMAGESOURCEDATA
+#define TIFFTAG_IMAGESOURCEDATA (37724)
+#endif
+
 /* Compression types we handle ourselves.
  */
 static int rtiff_we_decompress[] = {
@@ -1904,6 +1910,9 @@ rtiff_set_header(Rtiff *rtiff, VipsImage *out)
 	if (TIFFGetField(rtiff->tiff, TIFFTAG_PHOTOSHOP, &data_len, &data))
 		vips_image_set_blob_copy(out, VIPS_META_PHOTOSHOP_NAME, data, data_len);
 
+	if (TIFFGetField(rtiff->tiff, TIFFTAG_IMAGESOURCEDATA, &data_len, &data))
+		vips_image_set_blob_copy(out, VIPS_META_PHOTOSHOP_DATA, data, data_len);
+
 	if (rtiff->header.image_description)
 		vips_image_set_string(out, VIPS_META_IMAGEDESCRIPTION,
 			rtiff->header.image_description);
diff --git a/libvips/include/vips/header.h b/libvips/include/vips/header.h
@@ -67,6 +67,14 @@ extern "C" {
  */
 #define VIPS_META_PHOTOSHOP_NAME "photoshop-data"
 
+/**
+ * VIPS_META_PHOTOSHOP_DATA:
+ *
+ * The name that TIFF read and write operations use for the image's
+ * TIFFTAG_IMAGESOURCEDATA data.
+ */
+#define VIPS_META_PHOTOSHOP_DATA "photoshop-image-data"
+
 /**
  * VIPS_META_ICC_NAME:
  *
