From 5c1676dfe6d2f3c837a5e074117b45613fd29a72 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:30:19 +0200 Subject: Adding upstream version 2.10.34. Signed-off-by: Daniel Baumann --- app/core/gimpimage-convert-precision.c | 304 +++++++++++++++++++++++++++++++++ 1 file changed, 304 insertions(+) create mode 100644 app/core/gimpimage-convert-precision.c (limited to 'app/core/gimpimage-convert-precision.c') diff --git a/app/core/gimpimage-convert-precision.c b/app/core/gimpimage-convert-precision.c new file mode 100644 index 0000000..71a613c --- /dev/null +++ b/app/core/gimpimage-convert-precision.c @@ -0,0 +1,304 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpimage-convert-precision.c + * Copyright (C) 2012 Michael Natterer + * + * 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 . + */ + +#include "config.h" + +#include +#include +#include + +#include "libgimpcolor/gimpcolor.h" + +#include "core-types.h" + +#include "gegl/gimp-babl.h" +#include "gegl/gimp-gegl-loops.h" + +#include "gimpchannel.h" +#include "gimpdrawable.h" +#include "gimpdrawable-operation.h" +#include "gimpimage.h" +#include "gimpimage-color-profile.h" +#include "gimpimage-convert-precision.h" +#include "gimpimage-undo.h" +#include "gimpimage-undo-push.h" +#include "gimpobjectqueue.h" +#include "gimpprogress.h" + +#include "text/gimptextlayer.h" + +#include "gimp-intl.h" + + +void +gimp_image_convert_precision (GimpImage *image, + GimpPrecision precision, + GeglDitherMethod layer_dither_type, + GeglDitherMethod text_layer_dither_type, + GeglDitherMethod mask_dither_type, + GimpProgress *progress) +{ + GimpColorProfile *old_profile; + GimpColorProfile *new_profile = NULL; + const Babl *old_format; + const Babl *new_format; + GimpObjectQueue *queue; + GimpProgress *sub_progress; + GList *layers; + GimpDrawable *drawable; + const gchar *undo_desc = NULL; + + g_return_if_fail (GIMP_IS_IMAGE (image)); + g_return_if_fail (precision != gimp_image_get_precision (image)); + g_return_if_fail (gimp_babl_is_valid (gimp_image_get_base_type (image), + precision)); + g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress)); + + switch (precision) + { + case GIMP_PRECISION_U8_LINEAR: + undo_desc = C_("undo-type", "Convert Image to 8 bit linear integer"); + break; + case GIMP_PRECISION_U8_GAMMA: + undo_desc = C_("undo-type", "Convert Image to 8 bit gamma integer"); + break; + case GIMP_PRECISION_U16_LINEAR: + undo_desc = C_("undo-type", "Convert Image to 16 bit linear integer"); + break; + case GIMP_PRECISION_U16_GAMMA: + undo_desc = C_("undo-type", "Convert Image to 16 bit gamma integer"); + break; + case GIMP_PRECISION_U32_LINEAR: + undo_desc = C_("undo-type", "Convert Image to 32 bit linear integer"); + break; + case GIMP_PRECISION_U32_GAMMA: + undo_desc = C_("undo-type", "Convert Image to 32 bit gamma integer"); + break; + case GIMP_PRECISION_HALF_LINEAR: + undo_desc = C_("undo-type", "Convert Image to 16 bit linear floating point"); + break; + case GIMP_PRECISION_HALF_GAMMA: + undo_desc = C_("undo-type", "Convert Image to 16 bit gamma floating point"); + break; + case GIMP_PRECISION_FLOAT_LINEAR: + undo_desc = C_("undo-type", "Convert Image to 32 bit linear floating point"); + break; + case GIMP_PRECISION_FLOAT_GAMMA: + undo_desc = C_("undo-type", "Convert Image to 32 bit gamma floating point"); + break; + case GIMP_PRECISION_DOUBLE_LINEAR: + undo_desc = C_("undo-type", "Convert Image to 64 bit linear floating point"); + break; + case GIMP_PRECISION_DOUBLE_GAMMA: + undo_desc = C_("undo-type", "Convert Image to 64 bit gamma floating point"); + break; + } + + if (progress) + gimp_progress_start (progress, FALSE, "%s", undo_desc); + + queue = gimp_object_queue_new (progress); + sub_progress = GIMP_PROGRESS (queue); + + layers = gimp_image_get_layer_list (image); + gimp_object_queue_push_list (queue, layers); + g_list_free (layers); + + gimp_object_queue_push (queue, gimp_image_get_mask (image)); + gimp_object_queue_push_container (queue, gimp_image_get_channels (image)); + + g_object_freeze_notify (G_OBJECT (image)); + + gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_CONVERT, + undo_desc); + + /* Push the image precision to the stack */ + gimp_image_undo_push_image_precision (image, NULL); + + old_profile = gimp_image_get_color_profile (image); + old_format = gimp_image_get_layer_format (image, FALSE); + + gimp_image_set_converting (image, TRUE); + + /* Set the new precision */ + g_object_set (image, "precision", precision, NULL); + + new_format = gimp_image_get_layer_format (image, FALSE); + + if (old_profile) + { + if (gimp_babl_format_get_linear (old_format) != + gimp_babl_format_get_linear (new_format)) + { + /* when converting between linear and gamma, we create a new + * profile using the original profile's chromacities and + * whitepoint, but a linear/sRGB-gamma TRC. + */ + + if (gimp_babl_format_get_linear (new_format)) + { + new_profile = + gimp_color_profile_new_linear_from_color_profile (old_profile); + } + else + { + new_profile = + gimp_color_profile_new_srgb_trc_from_color_profile (old_profile); + } + + /* if a new profile cannot be be generated, convert to the + * builtin profile, which is better than leaving the user with + * broken colors + */ + if (! new_profile) + { + new_profile = gimp_image_get_builtin_color_profile (image); + g_object_ref (new_profile); + } + } + + if (! new_profile) + new_profile = g_object_ref (old_profile); + } + + while ((drawable = gimp_object_queue_pop (queue))) + { + if (drawable == GIMP_DRAWABLE (gimp_image_get_mask (image))) + { + GeglBuffer *buffer; + + gimp_image_undo_push_mask_precision (image, NULL, + GIMP_CHANNEL (drawable)); + + buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, + gimp_image_get_width (image), + gimp_image_get_height (image)), + gimp_image_get_mask_format (image)); + + gimp_gegl_buffer_copy (gimp_drawable_get_buffer (drawable), NULL, + GEGL_ABYSS_NONE, + buffer, NULL); + + gimp_drawable_set_buffer (drawable, FALSE, NULL, buffer); + g_object_unref (buffer); + + gimp_progress_set_value (sub_progress, 1.0); + } + else + { + gint dither_type; + + if (gimp_item_is_text_layer (GIMP_ITEM (drawable))) + dither_type = text_layer_dither_type; + else + dither_type = layer_dither_type; + + gimp_drawable_convert_type (drawable, image, + gimp_drawable_get_base_type (drawable), + precision, + gimp_drawable_has_alpha (drawable), + new_profile, + dither_type, + mask_dither_type, + TRUE, sub_progress); + } + } + + if (new_profile) + { + if (new_profile != old_profile) + gimp_image_set_color_profile (image, new_profile, NULL); + + g_object_unref (new_profile); + } + + gimp_image_set_converting (image, FALSE); + + gimp_image_undo_group_end (image); + + gimp_image_precision_changed (image); + g_object_thaw_notify (G_OBJECT (image)); + + g_object_unref (queue); + + if (progress) + gimp_progress_end (progress); +} + +void +gimp_image_convert_dither_u8 (GimpImage *image, + GimpProgress *progress) +{ + GeglNode *dither; + + g_return_if_fail (GIMP_IS_IMAGE (image)); + g_return_if_fail (progress == NULL || GIMP_IS_PROGRESS (progress)); + + dither = gegl_node_new_child (NULL, + "operation", "gegl:noise-rgb", + "red", 1.0 / 256.0, + "green", 1.0 / 256.0, + "blue", 1.0 / 256.0, + "linear", FALSE, + "gaussian", FALSE, + NULL); + + if (dither) + { + GimpObjectQueue *queue; + GimpProgress *sub_progress; + GList *layers; + GList *list; + GimpDrawable *drawable; + + if (progress) + gimp_progress_start (progress, FALSE, "%s", _("Dithering")); + + queue = gimp_object_queue_new (progress); + sub_progress = GIMP_PROGRESS (queue); + + layers = gimp_image_get_layer_list (image); + + for (list = layers; list; list = g_list_next (list)) + { + if (! gimp_viewable_get_children (list->data) && + ! gimp_item_is_text_layer (list->data)) + { + gimp_object_queue_push (queue, list->data); + } + } + + g_list_free (layers); + + while ((drawable = gimp_object_queue_pop (queue))) + { + gimp_drawable_apply_operation (drawable, sub_progress, + _("Dithering"), + dither); + } + + g_object_unref (queue); + + if (progress) + gimp_progress_end (progress); + + g_object_unref (dither); + } +} -- cgit v1.2.3