--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/source/fitz/color-imp.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,127 @@
+// Copyright (C) 2004-2021 Artifex Software, Inc.
+//
+// This file is part of MuPDF.
+//
+// MuPDF is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// MuPDF 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 Affero General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
+//
+// Alternative licensing terms are available from the licensor.
+// For commercial licensing, see <https://www.artifex.com/> or contact
+// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
+// CA 94129, USA, for further information.
+
+#ifndef FITZ_COLOR_IMP_H
+#define FITZ_COLOR_IMP_H
+
+#include "mupdf/fitz.h"
+
+typedef struct fz_color_converter fz_color_converter;
+
+/* Color management engine */
+
+#if FZ_ENABLE_ICC
+
+/*
+	Create ICC profile from PDF calGray and calRGB definitions
+*/
+fz_buffer *fz_new_icc_data_from_cal(fz_context *ctx, float wp[3], float bp[3], float *gamma, float matrix[9], int n);
+
+/*
+	Opaque type for a link (transform) generated between ICC
+	profiles.
+*/
+typedef struct fz_icc_link fz_icc_link;
+
+void fz_new_icc_context(fz_context *ctx);
+void fz_drop_icc_context(fz_context *ctx);
+fz_icc_profile *fz_new_icc_profile(fz_context *ctx, unsigned char *data, size_t size);
+void fz_drop_icc_profile(fz_context *ctx, fz_icc_profile *profile);
+void fz_icc_profile_name(fz_context *ctx, fz_icc_profile *profile, char *name, size_t size);
+int fz_icc_profile_components(fz_context *ctx, fz_icc_profile *profile);
+int fz_icc_profile_is_lab(fz_context *ctx, fz_icc_profile *profile);
+fz_icc_link *fz_new_icc_link(fz_context *ctx,
+	fz_colorspace *src, int src_extras,
+	fz_colorspace *dst, int dst_extras,
+	fz_colorspace *prf,
+	fz_color_params color_params,
+	int format,
+	int copy_spots,
+	int premult);
+void fz_drop_icc_link_imp(fz_context *ctx, fz_storable *link);
+void fz_drop_icc_link(fz_context *ctx, fz_icc_link *link);
+fz_icc_link *fz_find_icc_link(fz_context *ctx,
+	fz_colorspace *src, int src_extras,
+	fz_colorspace *dst, int dst_extras,
+	fz_colorspace *prf,
+	fz_color_params color_params,
+	int format,
+	int copy_spots,
+	int premult);
+void fz_icc_transform_color(fz_context *ctx, fz_color_converter *cc, const float *src, float *dst);
+void fz_icc_transform_pixmap(fz_context *ctx, fz_icc_link *link, const fz_pixmap *src, fz_pixmap *dst, int copy_spots);
+
+#endif
+
+typedef void (fz_color_convert_fn)(fz_context *ctx, fz_color_converter *cc, const float *src, float *dst);
+
+struct fz_color_converter
+{
+	fz_color_convert_fn *convert;
+	fz_color_convert_fn *convert_via;
+	fz_colorspace *ds;
+	fz_separations *dseps;
+	int dst_n;
+	fz_colorspace *ss;
+	fz_colorspace *ss_via;
+	void *opaque;
+#if FZ_ENABLE_ICC
+	fz_icc_link *link;
+#endif
+};
+
+struct fz_colorspace_context
+{
+	int ctx_refs;
+	fz_colorspace *gray, *rgb, *bgr, *cmyk, *lab;
+#if FZ_ENABLE_ICC
+	void *icc_instance;
+#endif
+};
+
+void fz_drop_colorspace_store_key(fz_context *ctx, fz_colorspace *cs);
+fz_colorspace *fz_keep_colorspace_store_key(fz_context *ctx, fz_colorspace *cs);
+
+void fz_init_cached_color_converter(fz_context *ctx, fz_color_converter *cc, fz_colorspace *ss, fz_colorspace *ds, fz_separations *seps, fz_colorspace *is, fz_color_params params);
+void fz_fin_cached_color_converter(fz_context *ctx, fz_color_converter *cc);
+fz_color_convert_fn *fz_lookup_fast_color_converter(fz_context *ctx, fz_colorspace *ss, fz_colorspace *ds);
+void fz_find_color_converter(fz_context *ctx, fz_color_converter *cc, fz_colorspace *ss, fz_colorspace *ds, fz_separations *seps, fz_colorspace *is, fz_color_params params);
+void fz_drop_color_converter(fz_context *ctx, fz_color_converter *cc);
+
+/*
+	Color convert a pixmap. The passing of default_cs is needed due
+	to the base cs of the image possibly needing to be treated as
+	being in one of the page default color spaces.
+*/
+void fz_convert_pixmap_samples(fz_context *ctx, const fz_pixmap *src, fz_pixmap *dst, fz_colorspace *prf, const fz_default_colorspaces *default_cs, fz_color_params color_params, int copy_spots);
+void fz_fast_any_to_alpha(fz_context *ctx, const fz_pixmap *src, fz_pixmap *dst, int copy_spots);
+void fz_convert_fast_pixmap_samples(fz_context *ctx, const fz_pixmap *src, fz_pixmap *dst, int copy_spots);
+void fz_convert_slow_pixmap_samples(fz_context *ctx, const fz_pixmap *src, fz_pixmap *dst, fz_colorspace *prf, fz_color_params params, int copy_spots);
+
+/**
+	Attempt to init a color converter to work by copying separation values.
+*/
+int
+fz_init_separation_copy_color_converter(fz_context *ctx, fz_color_converter *cc, fz_colorspace *ss, fz_colorspace *ds, fz_separations *dseps, fz_colorspace *is, fz_color_params params);
+
+
+#endif