1 files changed, 64 insertions, 0 deletions
diff --git a/tiff/contrib/pds/tif_imageiter.h b/tiff/contrib/pds/tif_imageiter.h
new file mode 100644
index 0000000..e7dbe46
--- /dev/null
+++ b/tiff/contrib/pds/tif_imageiter.h
@@ -0,0 +1,64 @@
+typedef struct _TIFFImageIter TIFFImageIter;
+
+/* The callback function is called for each "block" of image pixel data after
+   it has been read from the file and decoded. This image pixel data is in the
+   buffer pp, and this data represents the image pixels from (x,y) to
+   (x+w,y+h). It is stored in pixel format, so each pixel contains
+   img->samplesperpixel consecutive samples each containing img->bitspersample
+   bits of data. The array pp is ordered in h consecutive rows of w+fromskew
+   pixels each. */
+typedef void (*ImageIterTileContigRoutine)
+    (TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32,
+	unsigned char*);
+#define	DECLAREContigCallbackFunc(name) \
+static void name(\
+    TIFFImageIter* img, \
+    void* user_data, \
+    uint32 x, uint32 y, \
+    uint32 w, uint32 h, \
+    int32 fromskew, \
+    u_char* pp \
+)
+
+typedef void (*ImageIterTileSeparateRoutine)
+    (TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32,
+	unsigned char*, unsigned char*, unsigned char*, unsigned char*);
+#define	DECLARESepCallbackFunc(name) \
+static void name(\
+    TIFFImageIter* img, \
+    void* user_data, \
+    uint32 x, uint32 y, \
+    uint32 w, uint32 h,\
+    int32 fromskew, \
+    u_char* r, u_char* g, u_char* b, u_char* a\
+)
+
+struct _TIFFImageIter {
+	TIFF*	tif;				/* image handle */
+	int	stoponerr;			/* stop on read error */
+	int	isContig;			/* data is packed/separate */
+	int	alpha;				/* type of alpha data present */
+	uint32	width;				/* image width */
+	uint32	height;				/* image height */
+	uint16	bitspersample;			/* image bits/sample */
+	uint16	samplesperpixel;		/* image samples/pixel */
+	uint16	orientation;			/* image orientation */
+	uint16	photometric;			/* image photometric interp */
+	uint16*	redcmap;			/* colormap pallete */
+	uint16*	greencmap;
+	uint16*	bluecmap;
+						/* get image data routine */
+	int	(*get)(TIFFImageIter*, void *udata, uint32, uint32);
+	union {
+	    void (*any)(TIFFImageIter*);
+	    ImageIterTileContigRoutine		contig;
+	    ImageIterTileSeparateRoutine	separate;
+	} callback;				/* fn to exec for each block */
+};
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 8
+ * fill-column: 78
+ * End:
+ */