u

2026-07-14 23:30:16 +02:00
parent 245fb047d7
commit 262fa63f1b
109 changed files with 21566 additions and 367 deletions
--- a/jtlsrv-cpp/.static-build/include/vips/interpolate.h
+++ b/jtlsrv-cpp/.static-build/include/vips/interpolate.h
@@ -0,0 +1,139 @@
+/* Various interpolators.
+ *
+ * J.Cupitt, 15/10/08
+ */
+
+/*
+
+	This file is part of VIPS.
+
+	VIPS is free software; you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+	02110-1301  USA
+
+ */
+
+/*
+
+	These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
+
+ */
+
+#ifndef VIPS_INTERPOLATE_H
+#define VIPS_INTERPOLATE_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <vips/object.h>
+#include <vips/region.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /*__cplusplus*/
+
+#define VIPS_TYPE_INTERPOLATE (vips_interpolate_get_type())
+#define VIPS_INTERPOLATE(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST((obj), \
+		VIPS_TYPE_INTERPOLATE, VipsInterpolate))
+#define VIPS_INTERPOLATE_CLASS(klass) \
+	(G_TYPE_CHECK_CLASS_CAST((klass), \
+		VIPS_TYPE_INTERPOLATE, VipsInterpolateClass))
+#define VIPS_IS_INTERPOLATE(obj) \
+	(G_TYPE_CHECK_INSTANCE_TYPE((obj), VIPS_TYPE_INTERPOLATE))
+#define VIPS_IS_INTERPOLATE_CLASS(klass) \
+	(G_TYPE_CHECK_CLASS_TYPE((klass), VIPS_TYPE_INTERPOLATE))
+#define VIPS_INTERPOLATE_GET_CLASS(obj) \
+	(G_TYPE_INSTANCE_GET_CLASS((obj), \
+		VIPS_TYPE_INTERPOLATE, VipsInterpolateClass))
+
+struct _VipsInterpolate {
+	VipsObject parent_object;
+};
+
+/* An interpolation function. This is a class method, but we have a lookup
+ * function for it to speed up dispatch. Write to the memory at "out",
+ * interpolate the value at position (x, y) in "in".
+ */
+typedef void (*VipsInterpolateMethod)(VipsInterpolate *interpolate,
+	void *out, VipsRegion *in, double x, double y);
+
+typedef struct _VipsInterpolateClass {
+	VipsObjectClass parent_class;
+
+	/* Write to pixel out(x,y), interpolating from in(x,y). The caller has
+	 * to set the regions up.
+	 */
+	VipsInterpolateMethod interpolate;
+
+	/* This interpolator needs a window this many pixels across and down.
+	 */
+	int (*get_window_size)(VipsInterpolate *interpolate);
+
+	/* Or just set this if you want a constant.
+	 */
+	int window_size;
+
+	/* Stencils are offset by this much. Default to window_size / 2 - 1
+	 * (centering) if get_window_offset is NULL and window_offset is -1.
+	 */
+	int (*get_window_offset)(VipsInterpolate *interpolate);
+	int window_offset;
+} VipsInterpolateClass;
+
+/* Don't put spaces around void here, it breaks gtk-doc.
+ */
+VIPS_API
+GType vips_interpolate_get_type(void);
+VIPS_API
+void vips_interpolate(VipsInterpolate *interpolate,
+	void *out, VipsRegion *in, double x, double y);
+VIPS_API
+VipsInterpolateMethod vips_interpolate_get_method(VipsInterpolate *interpolate);
+VIPS_API
+int vips_interpolate_get_window_size(VipsInterpolate *interpolate);
+VIPS_API
+int vips_interpolate_get_window_offset(VipsInterpolate *interpolate);
+
+/* How many bits of precision we keep for transformations, ie. how many
+ * pre-computed matrices we have.
+ */
+#define VIPS_TRANSFORM_SHIFT (6)
+#define VIPS_TRANSFORM_SCALE (1 << VIPS_TRANSFORM_SHIFT)
+
+/* How many bits of precision we keep for interpolation, ie. where the decimal
+ * is in the fixed-point tables. For 16-bit pixels, we need 16 bits for the
+ * data and 4 bits to add 16 values together. That leaves 12 bits for the
+ * fractional part.
+ */
+#define VIPS_INTERPOLATE_SHIFT (12)
+#define VIPS_INTERPOLATE_SCALE (1 << VIPS_INTERPOLATE_SHIFT)
+
+/* Convenience: return static interpolators, no need to unref.
+ */
+VIPS_API
+VipsInterpolate *vips_interpolate_nearest_static(void);
+VIPS_API
+VipsInterpolate *vips_interpolate_bilinear_static(void);
+
+/* Convenience: make an interpolator from a nickname. g_object_unref() when
+ * you're done with it.
+ */
+VIPS_API
+VipsInterpolate *vips_interpolate_new(const char *nickname);
+
+#ifdef __cplusplus
+}
+#endif /*__cplusplus*/
+
+#endif /*VIPS_INTERPOLATE_H*/