first commit

include/mupdf/fitz/separation.h

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+#ifndef MUPDF_FITZ_SEPARATION_H
+#define MUPDF_FITZ_SEPARATION_H
+
+#include "mupdf/fitz/system.h"
+#include "mupdf/fitz/context.h"
+
+/*
+	A fz_separation structure holds details of a set of separations
+	(such as might be used on within a page of the document).
+
+	The app might control the separations by enabling/disabling them,
+	and subsequent renders would take this into account.
+*/
+
+enum
+{
+	FZ_MAX_SEPARATIONS = 64
+};
+
+typedef struct fz_separations_s fz_separations;
+
+typedef enum
+{
+	/* "Composite" separations are rendered using process
+	 * colors using the equivalent colors */
+	FZ_SEPARATION_COMPOSITE = 0,
+	/* Spot colors are rendered into their own spot plane. */
+	FZ_SEPARATION_SPOT = 1,
+	/* Disabled colors are not rendered at all in the final
+	 * output. */
+	FZ_SEPARATION_DISABLED = 2
+} fz_separation_behavior;
+
+/* Create a new separations structure (initially empty) */
+fz_separations *fz_new_separations(fz_context *ctx, int controllable);
+
+/* Keep a reference */
+fz_separations *fz_keep_separations(fz_context *ctx, fz_separations *sep);
+
+/* Drop a reference */
+void fz_drop_separations(fz_context *ctx, fz_separations *sep);
+
+/* Add a separation (null terminated name, colorspace) */
+void fz_add_separation(fz_context *ctx, fz_separations *sep, const char *name, fz_colorspace *cs, int cs_channel);
+
+/* Add a separation with equivalents (null terminated name, colorspace) (old, deprecated) */
+void fz_add_separation_equivalents(fz_context *ctx, fz_separations *sep, uint32_t rgba, uint32_t cmyk, const char *name);
+
+/* Control the rendering of a given separation */
+void fz_set_separation_behavior(fz_context *ctx, fz_separations *sep, int separation, fz_separation_behavior behavior);
+
+/* Test for the current behavior of a separation */
+fz_separation_behavior fz_separation_current_behavior(fz_context *ctx, const fz_separations *sep, int separation);
+
+/* Quick test for all separations composite (the common case) */
+int fz_separations_all_composite(fz_context *ctx, const fz_separations *sep);
+
+/* Read separation name */
+const char *fz_separation_name(fz_context *ctx, const fz_separations *sep, int separation);
+
+/* Count the number of separations */
+int fz_count_separations(fz_context *ctx, const fz_separations *sep);
+
+/* Find out if separations are controllable. */
+int fz_separations_controllable(fz_context *ctx, const fz_separations *seps);
+
+/* Return the number of active separations. */
+int fz_count_active_separations(fz_context *ctx, const fz_separations *seps);
+
+/* Return a separations object with all the spots in the input
+ * separations object that are set to composite, reset to be
+ * enabled. If there ARE no spots in the object, this returns
+ * NULL. If the object already has all its spots enabled, then
+ * just returns another handle on the same object. */
+fz_separations *fz_clone_separations_for_overprint(fz_context *ctx, fz_separations *seps);
+
+/* Convert a color given in terms of one colorspace,
+ * to a color in terms of another colorspace/separations. */
+void fz_convert_separation_colors(fz_context *ctx, const fz_color_params *color_params, const fz_colorspace *dst_cs, const fz_separations *dst_sep, float *dst_color, const fz_colorspace *src_cs, const float *src_color);
+
+/* Get the equivalent separation color in a given colorspace. */
+void fz_separation_equivalent(fz_context *ctx, const fz_separations *seps, int i, const fz_color_params *color_params, const fz_colorspace *dst_cs, const fz_colorspace *prf, float *convert);
+
+#endif