summaryrefslogtreecommitdiffstats
path: root/app/operations/gimpoperationmaskcomponents.cc
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--app/operations/gimpoperationmaskcomponents.cc586
1 files changed, 586 insertions, 0 deletions
diff --git a/app/operations/gimpoperationmaskcomponents.cc b/app/operations/gimpoperationmaskcomponents.cc
new file mode 100644
index 0000000..779dfac
--- /dev/null
+++ b/app/operations/gimpoperationmaskcomponents.cc
@@ -0,0 +1,586 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationmaskcomponents.c
+ * 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>
+
+extern "C"
+{
+
+#include "operations-types.h"
+
+#include "gimpoperationmaskcomponents.h"
+
+} /* extern "C" */
+
+
+enum
+{
+ PROP_0,
+ PROP_MASK,
+ PROP_ALPHA
+};
+
+
+static void gimp_operation_mask_components_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gimp_operation_mask_components_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+
+static void gimp_operation_mask_components_prepare (GeglOperation *operation);
+static GeglRectangle gimp_operation_mask_components_get_bounding_box (GeglOperation *operation);
+static gboolean gimp_operation_mask_components_parent_process (GeglOperation *operation,
+ GeglOperationContext *context,
+ const gchar *output_prop,
+ const GeglRectangle *result,
+ gint level);
+
+static gboolean gimp_operation_mask_components_process (GeglOperation *operation,
+ void *in_buf,
+ void *aux_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi,
+ gint level);
+
+
+G_DEFINE_TYPE (GimpOperationMaskComponents, gimp_operation_mask_components,
+ GEGL_TYPE_OPERATION_POINT_COMPOSER)
+
+#define parent_class gimp_operation_mask_components_parent_class
+
+
+static void
+gimp_operation_mask_components_class_init (GimpOperationMaskComponentsClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
+ GeglOperationPointComposerClass *point_class = GEGL_OPERATION_POINT_COMPOSER_CLASS (klass);
+
+ object_class->set_property = gimp_operation_mask_components_set_property;
+ object_class->get_property = gimp_operation_mask_components_get_property;
+
+ gegl_operation_class_set_keys (operation_class,
+ "name", "gimp:mask-components",
+ "categories", "gimp",
+ "description", "Selectively pick components from src or aux",
+ NULL);
+
+ operation_class->prepare = gimp_operation_mask_components_prepare;
+ operation_class->get_bounding_box = gimp_operation_mask_components_get_bounding_box;
+ operation_class->process = gimp_operation_mask_components_parent_process;
+
+ point_class->process = gimp_operation_mask_components_process;
+
+ g_object_class_install_property (object_class, PROP_MASK,
+ g_param_spec_flags ("mask",
+ "Mask",
+ "The component mask",
+ GIMP_TYPE_COMPONENT_MASK,
+ GIMP_COMPONENT_MASK_ALL,
+ (GParamFlags) (
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT)));
+
+ g_object_class_install_property (object_class, PROP_ALPHA,
+ g_param_spec_double ("alpha",
+ "Alpha",
+ "The masked-in alpha value when there's no aux input",
+ -G_MAXDOUBLE,
+ G_MAXDOUBLE,
+ 0.0,
+ (GParamFlags) (
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT)));
+}
+
+static void
+gimp_operation_mask_components_init (GimpOperationMaskComponents *self)
+{
+}
+
+static void
+gimp_operation_mask_components_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpOperationMaskComponents *self = GIMP_OPERATION_MASK_COMPONENTS (object);
+
+ switch (property_id)
+ {
+ case PROP_MASK:
+ g_value_set_flags (value, self->mask);
+ break;
+
+ case PROP_ALPHA:
+ g_value_set_double (value, self->alpha);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_operation_mask_components_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpOperationMaskComponents *self = GIMP_OPERATION_MASK_COMPONENTS (object);
+
+ switch (property_id)
+ {
+ case PROP_MASK:
+ self->mask = (GimpComponentMask) g_value_get_flags (value);
+ break;
+
+ case PROP_ALPHA:
+ self->alpha = g_value_get_double (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static guint32
+get_alpha_value (const Babl *format,
+ gfloat alpha)
+{
+ switch (babl_format_get_bytes_per_pixel (format))
+ {
+ #define DEF_CASE(bpp, type) \
+ case bpp: \
+ { \
+ type alpha_value; \
+ \
+ babl_process ( \
+ babl_fish (babl_format_n (babl_type ("float"), 1), \
+ babl_format_n (babl_format_get_type (format, 0), 1)), \
+ &alpha, &alpha_value, 1); \
+ \
+ return alpha_value; \
+ }
+
+ DEF_CASE ( 4, guint8)
+ DEF_CASE ( 8, guint16)
+ DEF_CASE (16, guint32)
+
+ #undef DEF_CASE
+
+ default:
+ g_return_val_if_reached (0);
+ }
+}
+
+template <class T>
+struct ProcessGeneric
+{
+ static void
+ process (gconstpointer in_buf,
+ gconstpointer aux_buf,
+ gpointer out_buf,
+ gint n,
+ GimpComponentMask mask,
+ T alpha_value)
+ {
+ T *out = (T *) out_buf;
+ gint i;
+ gint c;
+
+ if (aux_buf)
+ {
+ const T *in[4];
+
+ for (c = 0; c < 4; c++)
+ {
+ if (mask & (1 << c))
+ in[c] = (const T *) aux_buf + c;
+ else
+ in[c] = (const T *) in_buf + c;
+ }
+
+ for (i = 0; i < n; i++)
+ {
+ for (c = 0; c < 4; c++)
+ {
+ out[c] = *in[c];
+
+ in[c] += 4;
+ }
+
+ out += 4;
+ }
+ }
+ else
+ {
+ const T *in = (const T*) in_buf;
+
+ for (i = 0; i < n; i++)
+ {
+ for (c = 0; c < 3; c++)
+ {
+ if (mask & (1 << c))
+ out[c] = 0;
+ else
+ out[c] = in[c];
+ }
+
+ if (mask & (1 << 3))
+ out[3] = alpha_value;
+ else
+ out[3] = in[3];
+
+ in += 4;
+ out += 4;
+ }
+ }
+ }
+};
+
+template <class T>
+struct Process : ProcessGeneric<T>
+{
+};
+
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+
+template <>
+struct Process<guint8>
+{
+ static void
+ process (gconstpointer in_buf,
+ gconstpointer aux_buf,
+ gpointer out_buf,
+ gint n,
+ GimpComponentMask mask,
+ guint8 alpha_value)
+ {
+ const guint32 *in;
+ guint32 *out;
+ guint32 in_mask = 0;
+ gint i;
+ gint c;
+
+ if (((guintptr) in_buf | (guintptr) aux_buf | (guintptr) out_buf) % 4)
+ {
+ ProcessGeneric<guint8>::process (in_buf, aux_buf, out_buf, n,
+ mask, alpha_value);
+
+ return;
+ }
+
+ in = (const guint32 *) in_buf;
+ out = (guint32 *) out_buf;
+
+ for (c = 0; c < 4; c++)
+ {
+ if (! (mask & (1 << c)))
+ in_mask |= 0xff << (8 * c);
+ }
+
+ if (aux_buf)
+ {
+ const guint32 *aux = (const guint32 *) aux_buf;
+ guint32 aux_mask = ~in_mask;
+
+ for (i = 0; i < n; i++)
+ {
+ *out = (*in & in_mask) | (*aux & aux_mask);
+
+ in++;
+ aux++;
+ out++;
+ }
+ }
+ else
+ {
+ if (! (mask & GIMP_COMPONENT_MASK_ALPHA) || ! alpha_value)
+ {
+ for (i = 0; i < n; i++)
+ {
+ *out = *in & in_mask;
+
+ in++;
+ out++;
+ }
+ }
+ else
+ {
+ guint32 alpha_mask = alpha_value << 24;
+
+ for (i = 0; i < n; i++)
+ {
+ *out = (*in & in_mask) | alpha_mask;
+
+ in++;
+ out++;
+ }
+ }
+ }
+ }
+};
+
+#endif /* G_BYTE_ORDER == G_LITTLE_ENDIAN */
+
+template <class T>
+static gboolean
+gimp_operation_mask_components_process (GimpOperationMaskComponents *self,
+ void *in_buf,
+ void *aux_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi,
+ gint level)
+{
+ Process<T>::process (in_buf, aux_buf, out_buf, samples,
+ self->mask, self->alpha_value);
+
+ return TRUE;
+}
+
+static void
+gimp_operation_mask_components_prepare (GeglOperation *operation)
+{
+ GimpOperationMaskComponents *self = GIMP_OPERATION_MASK_COMPONENTS (operation);
+ const Babl *format;
+
+ format = gimp_operation_mask_components_get_format (
+ gegl_operation_get_source_format (operation, "input"));
+
+ gegl_operation_set_format (operation, "input", format);
+ gegl_operation_set_format (operation, "aux", format);
+ gegl_operation_set_format (operation, "output", format);
+
+ if (format != self->format)
+ {
+ self->format = format;
+
+ self->alpha_value = get_alpha_value (format, self->alpha);
+
+ switch (babl_format_get_bytes_per_pixel (format))
+ {
+ case 4:
+ self->process = (gpointer)
+ gimp_operation_mask_components_process<guint8>;
+ break;
+
+ case 8:
+ self->process = (gpointer)
+ gimp_operation_mask_components_process<guint16>;
+ break;
+
+ case 16:
+ self->process = (gpointer)
+ gimp_operation_mask_components_process<guint32>;
+ break;
+
+ default:
+ g_return_if_reached ();
+ }
+ }
+}
+
+static GeglRectangle
+gimp_operation_mask_components_get_bounding_box (GeglOperation *operation)
+{
+ GimpOperationMaskComponents *self = GIMP_OPERATION_MASK_COMPONENTS (operation);
+ GeglRectangle *in_rect;
+ GeglRectangle *aux_rect;
+ GeglRectangle result = {};
+
+ in_rect = gegl_operation_source_get_bounding_box (operation, "input");
+ aux_rect = gegl_operation_source_get_bounding_box (operation, "aux");
+
+ if (self->mask == 0)
+ {
+ if (in_rect)
+ return *in_rect;
+ }
+ else if (self->mask == GIMP_COMPONENT_MASK_ALL)
+ {
+ if (aux_rect)
+ return *aux_rect;
+ }
+
+ if (in_rect)
+ gegl_rectangle_bounding_box (&result, &result, in_rect);
+
+ if (aux_rect)
+ gegl_rectangle_bounding_box (&result, &result, aux_rect);
+
+ return result;
+}
+
+static gboolean
+gimp_operation_mask_components_parent_process (GeglOperation *operation,
+ GeglOperationContext *context,
+ const gchar *output_prop,
+ const GeglRectangle *result,
+ gint level)
+{
+ GimpOperationMaskComponents *self = GIMP_OPERATION_MASK_COMPONENTS (operation);
+
+ if (self->mask == 0)
+ {
+ GObject *input = gegl_operation_context_get_object (context, "input");
+
+ gegl_operation_context_set_object (context, "output", input);
+
+ return TRUE;
+ }
+ else if (self->mask == GIMP_COMPONENT_MASK_ALL)
+ {
+ GObject *aux = gegl_operation_context_get_object (context, "aux");
+
+ /* when there's no aux and the alpha component is masked-in, we set the
+ * result's alpha component to the value of the "alpha" property; if it
+ * doesn't equal 0, we can't forward an empty aux.
+ */
+ if (aux || ! self->alpha_value)
+ {
+ gegl_operation_context_set_object (context, "output", aux);
+
+ return TRUE;
+ }
+ }
+
+ return GEGL_OPERATION_CLASS (parent_class)->process (operation, context,
+ output_prop, result,
+ level);
+}
+
+static gboolean
+gimp_operation_mask_components_process (GeglOperation *operation,
+ void *in_buf,
+ void *aux_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi,
+ gint level)
+{
+ typedef gboolean (* ProcessFunc) (GimpOperationMaskComponents *self,
+ void *in_buf,
+ void *aux_buf,
+ void *out_buf,
+ glong samples,
+ const GeglRectangle *roi,
+ gint level);
+
+ GimpOperationMaskComponents *self = (GimpOperationMaskComponents *) operation;
+
+ return ((ProcessFunc) self->process) (self,
+ in_buf, aux_buf, out_buf, samples,
+ roi, level);
+}
+
+const Babl *
+gimp_operation_mask_components_get_format (const Babl *input_format)
+{
+ const Babl *format = NULL;
+
+ if (input_format)
+ {
+ const Babl *model = babl_format_get_model (input_format);
+ const gchar *model_name = babl_get_name (model);
+ const Babl *type = babl_format_get_type (input_format, 0);
+ const gchar *type_name = babl_get_name (type);
+
+ if (! strcmp (model_name, "Y") ||
+ ! strcmp (model_name, "YA") ||
+ ! strcmp (model_name, "RGB") ||
+ ! strcmp (model_name, "RGBA"))
+ {
+ if (! strcmp (type_name, "u8"))
+ format = babl_format ("RGBA u8");
+ else if (! strcmp (type_name, "u16"))
+ format = babl_format ("RGBA u16");
+ else if (! strcmp (type_name, "u32"))
+ format = babl_format ("RGBA u32");
+ else if (! strcmp (type_name, "half"))
+ format = babl_format ("RGBA half");
+ else if (! strcmp (type_name, "float"))
+ format = babl_format ("RGBA float");
+ }
+ else if (! strcmp (model_name, "Y'") ||
+ ! strcmp (model_name, "Y'A") ||
+ ! strcmp (model_name, "R'G'B'") ||
+ ! strcmp (model_name, "R'G'B'A") ||
+ babl_format_is_palette (input_format))
+ {
+ if (! strcmp (type_name, "u8"))
+ format = babl_format ("R'G'B'A u8");
+ else if (! strcmp (type_name, "u16"))
+ format = babl_format ("R'G'B'A u16");
+ else if (! strcmp (type_name, "u32"))
+ format = babl_format ("R'G'B'A u32");
+ else if (! strcmp (type_name, "half"))
+ format = babl_format ("R'G'B'A half");
+ else if (! strcmp (type_name, "float"))
+ format = babl_format ("R'G'B'A float");
+ }
+ }
+
+ if (! format)
+ format = babl_format ("RGBA float");
+
+ return format;
+}
+
+void
+gimp_operation_mask_components_process (const Babl *format,
+ gconstpointer in,
+ gconstpointer aux,
+ gpointer out,
+ gint n,
+ GimpComponentMask mask)
+{
+ g_return_if_fail (format != NULL);
+ g_return_if_fail (in != NULL);
+ g_return_if_fail (out != NULL);
+ g_return_if_fail (n >= 0);
+
+ switch (babl_format_get_bytes_per_pixel (format))
+ {
+ case 4:
+ Process<guint8>::process (in, aux, out, n, mask, 0);
+ break;
+
+ case 8:
+ Process<guint16>::process (in, aux, out, n, mask, 0);
+ break;
+
+ case 16:
+ Process<guint32>::process (in, aux, out, n, mask, 0);
+ break;
+
+ default:
+ g_return_if_reached ();
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-20 20:00:12 +0000