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-rw-r--r--app/gegl/gimp-babl-compat.c93
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diff --git a/app/gegl/gimp-babl-compat.c b/app/gegl/gimp-babl-compat.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimp-babl-compat.h
+ * Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+
+#include "gimp-gegl-types.h"
+
+#include "gimp-babl.h"
+#include "gimp-babl-compat.h"
+
+
+GimpImageType
+gimp_babl_format_get_image_type (const Babl *format)
+{
+ const Babl *model;
+
+ g_return_val_if_fail (format != NULL, -1);
+
+ model = babl_format_get_model (format);
+
+ if (model == babl_model ("Y") ||
+ model == babl_model ("Y'"))
+ {
+ return GIMP_GRAY_IMAGE;
+ }
+ else if (model == babl_model ("YA") ||
+ model == babl_model ("Y'A"))
+ {
+ return GIMP_GRAYA_IMAGE;
+ }
+ else if (model == babl_model ("RGB") ||
+ model == babl_model ("R'G'B'"))
+ {
+ return GIMP_RGB_IMAGE;
+ }
+ else if (model == babl_model ("RGBA") ||
+ model == babl_model ("R'G'B'A"))
+ {
+ return GIMP_RGBA_IMAGE;
+ }
+ else if (babl_format_is_palette (format))
+ {
+ if (babl_format_has_alpha (format))
+ return GIMP_INDEXEDA_IMAGE;
+ else
+ return GIMP_INDEXED_IMAGE;
+ }
+
+ g_return_val_if_reached (-1);
+}
+
+const Babl *
+gimp_babl_compat_u8_format (const Babl *format)
+{
+ g_return_val_if_fail (format != NULL, NULL);
+
+ /* indexed images only exist in u8, return the same format */
+ if (babl_format_is_palette (format))
+ return format;
+
+ return gimp_babl_format (gimp_babl_format_get_base_type (format),
+ GIMP_PRECISION_U8_GAMMA,
+ babl_format_has_alpha (format));
+}
+
+const Babl *
+gimp_babl_compat_u8_mask_format (const Babl *format)
+{
+ g_return_val_if_fail (format != NULL, NULL);
+
+ return gimp_babl_format (gimp_babl_format_get_base_type (format),
+ GIMP_PRECISION_U8_LINEAR,
+ FALSE);
+}