1199 lines
38 KiB
C++
1199 lines
38 KiB
C++
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pika-gegl-loops.c
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* Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <string.h>
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include <gegl-buffer-backend.h>
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extern "C"
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{
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#include "libpikabase/pikabase.h"
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#include "libpikacolor/pikacolor.h"
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#include "libpikamath/pikamath.h"
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#include "pika-gegl-types.h"
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#include "pika-babl.h"
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#include "pika-gegl-loops.h"
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#include "pika-gegl-loops-sse2.h"
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#include "core/pika-atomic.h"
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#include "core/pika-utils.h"
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#include "core/pikaprogress.h"
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#define PIXELS_PER_THREAD \
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(/* each thread costs as much as */ 64.0 * 64.0 /* pixels */)
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#define SHIFTED_AREA(dest, src) \
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const GeglRectangle dest##_area_ = { \
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src##_area->x + (dest##_rect->x - src##_rect->x), \
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src##_area->y + (dest##_rect->y - src##_rect->y), \
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src##_area->width, src##_area->height \
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}; \
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const GeglRectangle * const dest##_area = &dest##_area_
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void
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pika_gegl_buffer_copy (GeglBuffer *src_buffer,
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const GeglRectangle *src_rect,
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GeglAbyssPolicy abyss_policy,
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GeglBuffer *dest_buffer,
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const GeglRectangle *dest_rect)
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{
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GeglRectangle real_dest_rect;
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g_return_if_fail (GEGL_IS_BUFFER (src_buffer));
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g_return_if_fail (GEGL_IS_BUFFER (dest_buffer));
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if (! src_rect)
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src_rect = gegl_buffer_get_extent (src_buffer);
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if (! dest_rect)
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dest_rect = src_rect;
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real_dest_rect = *dest_rect;
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real_dest_rect.width = src_rect->width;
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real_dest_rect.height = src_rect->height;
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dest_rect = &real_dest_rect;
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if (gegl_buffer_get_format (src_buffer) ==
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gegl_buffer_get_format (dest_buffer))
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{
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gboolean skip_abyss = FALSE;
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GeglRectangle src_abyss;
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GeglRectangle dest_abyss;
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if (abyss_policy == GEGL_ABYSS_NONE)
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{
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src_abyss = *gegl_buffer_get_abyss (src_buffer);
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dest_abyss = *gegl_buffer_get_abyss (dest_buffer);
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skip_abyss = ! (gegl_rectangle_contains (&src_abyss, src_rect) &&
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gegl_rectangle_contains (&dest_abyss, dest_rect));
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}
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if (skip_abyss)
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{
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if (src_buffer < dest_buffer)
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{
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gegl_tile_handler_lock (GEGL_TILE_HANDLER (src_buffer));
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gegl_tile_handler_lock (GEGL_TILE_HANDLER (dest_buffer));
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}
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else
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{
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gegl_tile_handler_lock (GEGL_TILE_HANDLER (dest_buffer));
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gegl_tile_handler_lock (GEGL_TILE_HANDLER (src_buffer));
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}
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gegl_buffer_set_abyss (src_buffer, src_rect);
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gegl_buffer_set_abyss (dest_buffer, dest_rect);
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}
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gegl_buffer_copy (src_buffer, src_rect, abyss_policy,
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dest_buffer, dest_rect);
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if (skip_abyss)
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{
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gegl_buffer_set_abyss (src_buffer, &src_abyss);
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gegl_buffer_set_abyss (dest_buffer, &dest_abyss);
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gegl_tile_handler_unlock (GEGL_TILE_HANDLER (src_buffer));
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gegl_tile_handler_unlock (GEGL_TILE_HANDLER (dest_buffer));
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}
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}
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else
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{
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gegl_parallel_distribute_area (
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src_rect, PIXELS_PER_THREAD,
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[=] (const GeglRectangle *src_area)
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{
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SHIFTED_AREA (dest, src);
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gegl_buffer_copy (src_buffer, src_area, abyss_policy,
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dest_buffer, dest_area);
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});
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}
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}
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void
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pika_gegl_clear (GeglBuffer *buffer,
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const GeglRectangle *rect)
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{
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const Babl *format;
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gint bpp;
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gint n_components;
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gint bpc;
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gint alpha_offset;
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g_return_if_fail (GEGL_IS_BUFFER (buffer));
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if (! rect)
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rect = gegl_buffer_get_extent (buffer);
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format = gegl_buffer_get_format (buffer);
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if (! babl_format_has_alpha (format))
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return;
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bpp = babl_format_get_bytes_per_pixel (format);
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n_components = babl_format_get_n_components (format);
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bpc = bpp / n_components;
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alpha_offset = (n_components - 1) * bpc;
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gegl_parallel_distribute_area (
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rect, PIXELS_PER_THREAD,
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[=] (const GeglRectangle *area)
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{
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GeglBufferIterator *iter;
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iter = gegl_buffer_iterator_new (buffer, area, 0, format,
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GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE,
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1);
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while (gegl_buffer_iterator_next (iter))
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{
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guint8 *data = (guint8 *) iter->items[0].data;
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gint i;
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data += alpha_offset;
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for (i = 0; i < iter->length; i++)
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{
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memset (data, 0, bpc);
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data += bpp;
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}
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}
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});
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}
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void
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pika_gegl_convolve (GeglBuffer *src_buffer,
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const GeglRectangle *src_rect,
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GeglBuffer *dest_buffer,
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const GeglRectangle *dest_rect,
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const gfloat *kernel,
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gint kernel_size,
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gdouble divisor,
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PikaConvolutionType mode,
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gboolean alpha_weighting)
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{
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gfloat *src;
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gint src_rowstride;
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const Babl *src_format;
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const Babl *dest_format;
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gint src_components;
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gint dest_components;
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gfloat offset;
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if (! src_rect)
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src_rect = gegl_buffer_get_extent (src_buffer);
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if (! dest_rect)
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dest_rect = gegl_buffer_get_extent (dest_buffer);
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src_format = gegl_buffer_get_format (src_buffer);
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if (babl_format_is_palette (src_format))
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src_format = pika_babl_format (PIKA_RGB,
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PIKA_PRECISION_FLOAT_LINEAR,
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babl_format_has_alpha (src_format),
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babl_format_get_space (src_format));
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else
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src_format = pika_babl_format (pika_babl_format_get_base_type (src_format),
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PIKA_PRECISION_FLOAT_LINEAR,
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babl_format_has_alpha (src_format),
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babl_format_get_space (src_format));
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dest_format = gegl_buffer_get_format (dest_buffer);
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if (babl_format_is_palette (dest_format))
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dest_format = pika_babl_format (PIKA_RGB,
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PIKA_PRECISION_FLOAT_LINEAR,
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babl_format_has_alpha (dest_format),
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babl_format_get_space (dest_format));
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else
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dest_format = pika_babl_format (pika_babl_format_get_base_type (dest_format),
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PIKA_PRECISION_FLOAT_LINEAR,
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babl_format_has_alpha (dest_format),
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babl_format_get_space (dest_format));
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src_components = babl_format_get_n_components (src_format);
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dest_components = babl_format_get_n_components (dest_format);
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/* Get source pixel data */
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src_rowstride = src_components * src_rect->width;
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src = g_new (gfloat, src_rowstride * src_rect->height);
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gegl_buffer_get (src_buffer, src_rect, 1.0, src_format, src,
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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/* If the mode is NEGATIVE_CONVOL, the offset should be 0.5 */
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if (mode == PIKA_NEGATIVE_CONVOL)
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{
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offset = 0.5;
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mode = PIKA_NORMAL_CONVOL;
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}
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else
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{
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offset = 0.0;
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}
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gegl_parallel_distribute_area (
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dest_rect, PIXELS_PER_THREAD,
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[=] (const GeglRectangle *dest_area)
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{
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const gint components = src_components;
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const gint a_component = components - 1;
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const gint margin = kernel_size / 2;
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GeglBufferIterator *dest_iter;
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/* Set up dest iterator */
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dest_iter = gegl_buffer_iterator_new (dest_buffer, dest_area, 0, dest_format,
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GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 1);
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while (gegl_buffer_iterator_next (dest_iter))
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{
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/* Convolve the src image using the convolution kernel, writing
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* to dest Convolve is not tile-enabled--use accordingly
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*/
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gfloat *dest = (gfloat *) dest_iter->items[0].data;
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const gint x1 = 0;
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const gint y1 = 0;
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const gint x2 = src_rect->width - 1;
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const gint y2 = src_rect->height - 1;
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const gint dest_x1 = dest_iter->items[0].roi.x;
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const gint dest_y1 = dest_iter->items[0].roi.y;
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const gint dest_x2 = dest_iter->items[0].roi.x + dest_iter->items[0].roi.width;
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const gint dest_y2 = dest_iter->items[0].roi.y + dest_iter->items[0].roi.height;
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gint x, y;
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for (y = dest_y1; y < dest_y2; y++)
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{
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gfloat *d = dest;
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if (alpha_weighting)
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{
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for (x = dest_x1; x < dest_x2; x++)
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{
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const gfloat *m = kernel;
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gdouble total[4] = { 0.0, 0.0, 0.0, 0.0 };
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gdouble weighted_divisor = 0.0;
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gint i, j, b;
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for (j = y - margin; j <= y + margin; j++)
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{
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for (i = x - margin; i <= x + margin; i++, m++)
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{
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gint xx = CLAMP (i, x1, x2);
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gint yy = CLAMP (j, y1, y2);
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const gfloat *s = src + yy * src_rowstride + xx * components;
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const gfloat a = s[a_component];
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if (a)
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{
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gdouble mult_alpha = *m * a;
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weighted_divisor += mult_alpha;
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for (b = 0; b < a_component; b++)
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total[b] += mult_alpha * s[b];
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total[a_component] += mult_alpha;
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}
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}
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}
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if (weighted_divisor == 0.0)
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weighted_divisor = divisor;
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for (b = 0; b < a_component; b++)
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total[b] /= weighted_divisor;
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total[a_component] /= divisor;
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for (b = 0; b < components; b++)
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{
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total[b] += offset;
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if (mode != PIKA_NORMAL_CONVOL && total[b] < 0.0)
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total[b] = - total[b];
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*d++ = CLAMP (total[b], 0.0, 1.0);
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}
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}
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}
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else
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{
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for (x = dest_x1; x < dest_x2; x++)
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{
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const gfloat *m = kernel;
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gdouble total[4] = { 0.0, 0.0, 0.0, 0.0 };
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gint i, j, b;
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for (j = y - margin; j <= y + margin; j++)
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{
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for (i = x - margin; i <= x + margin; i++, m++)
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{
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gint xx = CLAMP (i, x1, x2);
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gint yy = CLAMP (j, y1, y2);
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const gfloat *s = src + yy * src_rowstride + xx * components;
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for (b = 0; b < components; b++)
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total[b] += *m * s[b];
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}
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}
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for (b = 0; b < components; b++)
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{
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total[b] = total[b] / divisor + offset;
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if (mode != PIKA_NORMAL_CONVOL && total[b] < 0.0)
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total[b] = - total[b];
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*d++ = CLAMP (total[b], 0.0, 1.0);
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}
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}
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}
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dest += dest_iter->items[0].roi.width * dest_components;
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}
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}
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});
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g_free (src);
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}
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static inline gfloat
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odd_powf (gfloat x,
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gfloat y)
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{
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if (x >= 0.0f)
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return powf ( x, y);
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else
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return -powf (-x, y);
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}
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void
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pika_gegl_dodgeburn (GeglBuffer *src_buffer,
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const GeglRectangle *src_rect,
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GeglBuffer *dest_buffer,
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const GeglRectangle *dest_rect,
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gdouble exposure,
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PikaDodgeBurnType type,
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PikaTransferMode mode)
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{
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if (type == PIKA_DODGE_BURN_TYPE_BURN)
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exposure = -exposure;
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if (! src_rect)
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src_rect = gegl_buffer_get_extent (src_buffer);
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if (! dest_rect)
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dest_rect = gegl_buffer_get_extent (dest_buffer);
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gegl_parallel_distribute_area (
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src_rect, PIXELS_PER_THREAD,
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[=] (const GeglRectangle *src_area)
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{
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GeglBufferIterator *iter;
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SHIFTED_AREA (dest, src);
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iter = gegl_buffer_iterator_new (src_buffer, src_area, 0,
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babl_format ("R'G'B'A float"),
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GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
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gegl_buffer_iterator_add (iter, dest_buffer, dest_area, 0,
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babl_format ("R'G'B'A float"),
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GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE);
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switch (mode)
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{
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gfloat factor;
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case PIKA_TRANSFER_HIGHLIGHTS:
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factor = 1.0 + exposure * (0.333333);
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while (gegl_buffer_iterator_next (iter))
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{
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gfloat *src = (gfloat *) iter->items[0].data;
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gfloat *dest = (gfloat *) iter->items[1].data;
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gint count = iter->length;
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while (count--)
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{
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*dest++ = *src++ * factor;
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*dest++ = *src++ * factor;
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*dest++ = *src++ * factor;
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*dest++ = *src++;
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}
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}
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break;
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case PIKA_TRANSFER_MIDTONES:
|
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if (exposure < 0)
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factor = 1.0 - exposure * (0.333333);
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else
|
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factor = 1.0 / (1.0 + exposure);
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|
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while (gegl_buffer_iterator_next (iter))
|
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{
|
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gfloat *src = (gfloat *) iter->items[0].data;
|
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gfloat *dest = (gfloat *) iter->items[1].data;
|
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gint count = iter->length;
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while (count--)
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{
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*dest++ = odd_powf (*src++, factor);
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*dest++ = odd_powf (*src++, factor);
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*dest++ = odd_powf (*src++, factor);
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*dest++ = *src++;
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}
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}
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break;
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case PIKA_TRANSFER_SHADOWS:
|
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if (exposure >= 0)
|
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factor = 0.333333 * exposure;
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else
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factor = -0.333333 * exposure;
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|
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while (gegl_buffer_iterator_next (iter))
|
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{
|
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gfloat *src = (gfloat *) iter->items[0].data;
|
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gfloat *dest = (gfloat *) iter->items[1].data;
|
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gint count = iter->length;
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|
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while (count--)
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{
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if (exposure >= 0)
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{
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gfloat s;
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s = *src++; *dest++ = factor + s - factor * s;
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s = *src++; *dest++ = factor + s - factor * s;
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s = *src++; *dest++ = factor + s - factor * s;
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}
|
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else
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{
|
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gfloat s;
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|
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s = *src++;
|
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if (s < factor)
|
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*dest++ = 0;
|
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else /* factor <= value <=1 */
|
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*dest++ = (s - factor) / (1.0 - factor);
|
|
|
|
s = *src++;
|
|
if (s < factor)
|
|
*dest++ = 0;
|
|
else /* factor <= value <=1 */
|
|
*dest++ = (s - factor) / (1.0 - factor);
|
|
|
|
s = *src++;
|
|
if (s < factor)
|
|
*dest++ = 0;
|
|
else /* factor <= value <=1 */
|
|
*dest++ = (s - factor) / (1.0 - factor);
|
|
}
|
|
|
|
*dest++ = *src++;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
});
|
|
}
|
|
|
|
/* helper function of pika_gegl_smudge_with_paint_process()
|
|
src and dest can be the same address
|
|
*/
|
|
static inline void
|
|
pika_gegl_smudge_with_paint_blend (const gfloat *src1,
|
|
gfloat src1_rate,
|
|
const gfloat *src2,
|
|
gfloat src2_rate,
|
|
gfloat *dest,
|
|
gboolean no_erasing_src2)
|
|
{
|
|
gfloat orginal_src2_alpha;
|
|
gfloat src1_alpha;
|
|
gfloat src2_alpha;
|
|
gfloat result_alpha;
|
|
gint b;
|
|
|
|
orginal_src2_alpha = src2[3];
|
|
src1_alpha = src1_rate * src1[3];
|
|
src2_alpha = src2_rate * orginal_src2_alpha;
|
|
result_alpha = src1_alpha + src2_alpha;
|
|
|
|
if (result_alpha == 0)
|
|
{
|
|
memset (dest, 0, sizeof (gfloat) * 4);
|
|
return;
|
|
}
|
|
|
|
for (b = 0; b < 3; b++)
|
|
dest[b] = (src1[b] * src1_alpha + src2[b] * src2_alpha) / result_alpha;
|
|
|
|
if (no_erasing_src2)
|
|
{
|
|
result_alpha = MAX (result_alpha, orginal_src2_alpha);
|
|
}
|
|
|
|
dest[3] = result_alpha;
|
|
}
|
|
|
|
/* helper function of pika_gegl_smudge_with_paint() */
|
|
static void
|
|
pika_gegl_smudge_with_paint_process (gfloat *accum,
|
|
const gfloat *canvas,
|
|
gfloat *paint,
|
|
gint count,
|
|
const gfloat *brush_color,
|
|
gfloat brush_a,
|
|
gboolean no_erasing,
|
|
gfloat flow,
|
|
gfloat rate)
|
|
{
|
|
while (count--)
|
|
{
|
|
/* blend accum_buffer and canvas_buffer to accum_buffer */
|
|
pika_gegl_smudge_with_paint_blend (accum, rate, canvas, 1 - rate,
|
|
accum, no_erasing);
|
|
|
|
/* blend accum_buffer and brush color/pixmap to paint_buffer */
|
|
if (brush_a == 0) /* pure smudge */
|
|
{
|
|
memcpy (paint, accum, sizeof (gfloat) * 4);
|
|
}
|
|
else
|
|
{
|
|
const gfloat *src1 = brush_color ? brush_color : paint;
|
|
|
|
pika_gegl_smudge_with_paint_blend (src1, flow, accum, 1 - flow,
|
|
paint, no_erasing);
|
|
}
|
|
|
|
accum += 4;
|
|
canvas += 4;
|
|
paint += 4;
|
|
}
|
|
}
|
|
|
|
/* smudge painting calculation. Currently only smudge tool uses this function
|
|
* Accum = rate*Accum + (1-rate)*Canvas
|
|
* if brush_color!=NULL
|
|
* Paint = flow*brushColor + (1-flow)*Accum
|
|
* else
|
|
* Paint = flow*Paint + (1-flow)*Accum
|
|
*/
|
|
void
|
|
pika_gegl_smudge_with_paint (GeglBuffer *accum_buffer,
|
|
const GeglRectangle *accum_rect,
|
|
GeglBuffer *canvas_buffer,
|
|
const GeglRectangle *canvas_rect,
|
|
const PikaRGB *brush_color,
|
|
GeglBuffer *paint_buffer,
|
|
gboolean no_erasing,
|
|
gdouble flow,
|
|
gdouble rate)
|
|
{
|
|
gfloat brush_color_float[4];
|
|
gfloat brush_a = flow;
|
|
GeglAccessMode paint_buffer_access_mode = (brush_color ?
|
|
GEGL_ACCESS_WRITE :
|
|
GEGL_ACCESS_READWRITE);
|
|
#if COMPILE_SSE2_INTRINISICS
|
|
gboolean sse2 = (pika_cpu_accel_get_support () &
|
|
PIKA_CPU_ACCEL_X86_SSE2);
|
|
#endif
|
|
|
|
if (! accum_rect)
|
|
accum_rect = gegl_buffer_get_extent (accum_buffer);
|
|
|
|
if (! canvas_rect)
|
|
canvas_rect = gegl_buffer_get_extent (canvas_buffer);
|
|
|
|
/* convert brush color from double to float */
|
|
if (brush_color)
|
|
{
|
|
const gdouble *brush_color_ptr = &brush_color->r;
|
|
gint b;
|
|
|
|
for (b = 0; b < 4; b++)
|
|
brush_color_float[b] = brush_color_ptr[b];
|
|
|
|
brush_a *= brush_color_ptr[3];
|
|
}
|
|
|
|
gegl_parallel_distribute_area (
|
|
accum_rect, PIXELS_PER_THREAD,
|
|
[=] (const GeglRectangle *accum_area)
|
|
{
|
|
GeglBufferIterator *iter;
|
|
|
|
SHIFTED_AREA (canvas, accum);
|
|
|
|
iter = gegl_buffer_iterator_new (accum_buffer, accum_area, 0,
|
|
babl_format ("RGBA float"),
|
|
GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 3);
|
|
|
|
gegl_buffer_iterator_add (iter, canvas_buffer, canvas_area, 0,
|
|
babl_format ("RGBA float"),
|
|
GEGL_ACCESS_READ, GEGL_ABYSS_NONE);
|
|
|
|
gegl_buffer_iterator_add (iter, paint_buffer,
|
|
GEGL_RECTANGLE (accum_area->x - accum_rect->x,
|
|
accum_area->y - accum_rect->y,
|
|
0, 0),
|
|
0,
|
|
babl_format ("RGBA float"),
|
|
paint_buffer_access_mode, GEGL_ABYSS_NONE);
|
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
gfloat *accum = (gfloat *) iter->items[0].data;
|
|
const gfloat *canvas = (const gfloat *) iter->items[1].data;
|
|
gfloat *paint = (gfloat *) iter->items[2].data;
|
|
gint count = iter->length;
|
|
|
|
#if COMPILE_SSE2_INTRINISICS
|
|
if (sse2 && ((guintptr) accum |
|
|
(guintptr) canvas |
|
|
(guintptr) (brush_color ? brush_color_float : paint) |
|
|
(guintptr) paint) % 16 == 0)
|
|
{
|
|
pika_gegl_smudge_with_paint_process_sse2 (accum, canvas, paint, count,
|
|
brush_color ? brush_color_float :
|
|
NULL,
|
|
brush_a,
|
|
no_erasing, flow, rate);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
pika_gegl_smudge_with_paint_process (accum, canvas, paint, count,
|
|
brush_color ? brush_color_float :
|
|
NULL,
|
|
brush_a,
|
|
no_erasing, flow, rate);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
void
|
|
pika_gegl_apply_mask (GeglBuffer *mask_buffer,
|
|
const GeglRectangle *mask_rect,
|
|
GeglBuffer *dest_buffer,
|
|
const GeglRectangle *dest_rect,
|
|
gdouble opacity)
|
|
{
|
|
if (! mask_rect)
|
|
mask_rect = gegl_buffer_get_extent (mask_buffer);
|
|
|
|
if (! dest_rect)
|
|
dest_rect = gegl_buffer_get_extent (dest_buffer);
|
|
|
|
gegl_parallel_distribute_area (
|
|
mask_rect, PIXELS_PER_THREAD,
|
|
[=] (const GeglRectangle *mask_area)
|
|
{
|
|
GeglBufferIterator *iter;
|
|
|
|
SHIFTED_AREA (dest, mask);
|
|
|
|
iter = gegl_buffer_iterator_new (mask_buffer, mask_area, 0,
|
|
babl_format ("Y float"),
|
|
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
|
|
|
|
gegl_buffer_iterator_add (iter, dest_buffer, dest_area, 0,
|
|
babl_format ("RGBA float"),
|
|
GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE);
|
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
const gfloat *mask = (const gfloat *) iter->items[0].data;
|
|
gfloat *dest = (gfloat *) iter->items[1].data;
|
|
gint count = iter->length;
|
|
|
|
while (count--)
|
|
{
|
|
dest[3] *= *mask * opacity;
|
|
|
|
mask += 1;
|
|
dest += 4;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
void
|
|
pika_gegl_combine_mask (GeglBuffer *mask_buffer,
|
|
const GeglRectangle *mask_rect,
|
|
GeglBuffer *dest_buffer,
|
|
const GeglRectangle *dest_rect,
|
|
gdouble opacity)
|
|
{
|
|
if (! mask_rect)
|
|
mask_rect = gegl_buffer_get_extent (mask_buffer);
|
|
|
|
if (! dest_rect)
|
|
dest_rect = gegl_buffer_get_extent (dest_buffer);
|
|
|
|
gegl_parallel_distribute_area (
|
|
mask_rect, PIXELS_PER_THREAD,
|
|
[=] (const GeglRectangle *mask_area)
|
|
{
|
|
GeglBufferIterator *iter;
|
|
|
|
SHIFTED_AREA (dest, mask);
|
|
|
|
iter = gegl_buffer_iterator_new (mask_buffer, mask_area, 0,
|
|
babl_format ("Y float"),
|
|
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
|
|
|
|
gegl_buffer_iterator_add (iter, dest_buffer, dest_area, 0,
|
|
babl_format ("Y float"),
|
|
GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE);
|
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
const gfloat *mask = (const gfloat *) iter->items[0].data;
|
|
gfloat *dest = (gfloat *) iter->items[1].data;
|
|
gint count = iter->length;
|
|
|
|
while (count--)
|
|
{
|
|
*dest *= *mask * opacity;
|
|
|
|
mask += 1;
|
|
dest += 1;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
void
|
|
pika_gegl_combine_mask_weird (GeglBuffer *mask_buffer,
|
|
const GeglRectangle *mask_rect,
|
|
GeglBuffer *dest_buffer,
|
|
const GeglRectangle *dest_rect,
|
|
gdouble opacity,
|
|
gboolean stipple)
|
|
{
|
|
if (! mask_rect)
|
|
mask_rect = gegl_buffer_get_extent (mask_buffer);
|
|
|
|
if (! dest_rect)
|
|
dest_rect = gegl_buffer_get_extent (dest_buffer);
|
|
|
|
gegl_parallel_distribute_area (
|
|
mask_rect, PIXELS_PER_THREAD,
|
|
[=] (const GeglRectangle *mask_area)
|
|
{
|
|
GeglBufferIterator *iter;
|
|
|
|
SHIFTED_AREA (dest, mask);
|
|
|
|
iter = gegl_buffer_iterator_new (mask_buffer, mask_area, 0,
|
|
babl_format ("Y float"),
|
|
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
|
|
|
|
gegl_buffer_iterator_add (iter, dest_buffer, dest_area, 0,
|
|
babl_format ("Y float"),
|
|
GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE);
|
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
const gfloat *mask = (const gfloat *) iter->items[0].data;
|
|
gfloat *dest = (gfloat *) iter->items[1].data;
|
|
gint count = iter->length;
|
|
|
|
if (stipple)
|
|
{
|
|
while (count--)
|
|
{
|
|
dest[0] += (1.0 - dest[0]) * *mask * opacity;
|
|
|
|
mask += 1;
|
|
dest += 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while (count--)
|
|
{
|
|
if (opacity > dest[0])
|
|
dest[0] += (opacity - dest[0]) * *mask * opacity;
|
|
|
|
mask += 1;
|
|
dest += 1;
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
void
|
|
pika_gegl_index_to_mask (GeglBuffer *indexed_buffer,
|
|
const GeglRectangle *indexed_rect,
|
|
const Babl *indexed_format,
|
|
GeglBuffer *mask_buffer,
|
|
const GeglRectangle *mask_rect,
|
|
gint index)
|
|
{
|
|
if (! indexed_rect)
|
|
indexed_rect = gegl_buffer_get_extent (indexed_buffer);
|
|
|
|
if (! mask_rect)
|
|
mask_rect = gegl_buffer_get_extent (mask_buffer);
|
|
|
|
gegl_parallel_distribute_area (
|
|
indexed_rect, PIXELS_PER_THREAD,
|
|
[=] (const GeglRectangle *indexed_area)
|
|
{
|
|
GeglBufferIterator *iter;
|
|
|
|
SHIFTED_AREA (mask, indexed);
|
|
|
|
iter = gegl_buffer_iterator_new (indexed_buffer, indexed_area, 0,
|
|
indexed_format,
|
|
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
|
|
|
|
gegl_buffer_iterator_add (iter, mask_buffer, mask_area, 0,
|
|
babl_format ("Y float"),
|
|
GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE);
|
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
const guchar *indexed = (const guchar *) iter->items[0].data;
|
|
gfloat *mask = (gfloat *) iter->items[1].data;
|
|
gint count = iter->length;
|
|
|
|
while (count--)
|
|
{
|
|
if (*indexed == index)
|
|
*mask = 1.0;
|
|
else
|
|
*mask = 0.0;
|
|
|
|
indexed++;
|
|
mask++;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
gboolean
|
|
pika_gegl_is_index_used (GeglBuffer *indexed_buffer,
|
|
const GeglRectangle *indexed_rect,
|
|
const Babl *indexed_format,
|
|
gint index)
|
|
{
|
|
GeglBufferIterator *iter;
|
|
gboolean found = FALSE;
|
|
|
|
if (! indexed_rect)
|
|
indexed_rect = gegl_buffer_get_extent (indexed_buffer);
|
|
|
|
iter = gegl_buffer_iterator_new (indexed_buffer, indexed_rect, 0,
|
|
indexed_format,
|
|
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 1);
|
|
|
|
/* I initially had an implementation using gegl_parallel_distribute_area()
|
|
* which turned out to be much slower than the simpler iteration on the whole
|
|
* buffer at once. I think the cost of threading and using GRWLock is just far
|
|
* too high for such very basic value check.
|
|
* See gegl_parallel_distribute_area() implementation in commit dbaa8b6a1c.
|
|
*/
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
const guchar *indexed = (const guchar *) iter->items[0].data;
|
|
gint count = iter->length;
|
|
|
|
while (count--)
|
|
{
|
|
if (*indexed == index)
|
|
{
|
|
/*
|
|
* Position of one item using this color index:
|
|
gint x = iter->items[0].roi.x + (iter->length - count - 1) % iter->items[0].roi.width;
|
|
gint y = iter->items[0].roi.y + (gint) ((iter->length - count - 1) / iter->items[0].roi.width);
|
|
*/
|
|
found = TRUE;
|
|
break;
|
|
}
|
|
indexed++;
|
|
}
|
|
|
|
if (found)
|
|
{
|
|
gegl_buffer_iterator_stop (iter);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return found;
|
|
}
|
|
|
|
void
|
|
pika_gegl_shift_index (GeglBuffer *indexed_buffer,
|
|
const GeglRectangle *indexed_rect,
|
|
const Babl *indexed_format,
|
|
gint from_index,
|
|
gint shift)
|
|
{
|
|
gboolean indexed_format_has_alpha;
|
|
|
|
if (! indexed_rect)
|
|
indexed_rect = gegl_buffer_get_extent (indexed_buffer);
|
|
|
|
indexed_format_has_alpha = babl_format_has_alpha (indexed_format);
|
|
|
|
gegl_parallel_distribute_area (
|
|
indexed_rect, PIXELS_PER_THREAD,
|
|
[=] (const GeglRectangle *indexed_area)
|
|
{
|
|
GeglBufferIterator *iter;
|
|
|
|
iter = gegl_buffer_iterator_new (indexed_buffer, indexed_area, 0,
|
|
indexed_format,
|
|
GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
|
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
guchar *indexed = (guchar *) iter->items[0].data;
|
|
gint count = iter->length;
|
|
|
|
while (count--)
|
|
{
|
|
if (*indexed >= from_index)
|
|
*indexed += shift;
|
|
|
|
indexed += (indexed_format_has_alpha ? 2 : 1);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
static void
|
|
pika_gegl_convert_color_profile_progress (PikaProgress *progress,
|
|
gdouble value)
|
|
{
|
|
if (gegl_is_main_thread ())
|
|
pika_progress_set_value (progress, value);
|
|
}
|
|
|
|
void
|
|
pika_gegl_convert_color_profile (GeglBuffer *src_buffer,
|
|
const GeglRectangle *src_rect,
|
|
PikaColorProfile *src_profile,
|
|
GeglBuffer *dest_buffer,
|
|
const GeglRectangle *dest_rect,
|
|
PikaColorProfile *dest_profile,
|
|
PikaColorRenderingIntent intent,
|
|
gboolean bpc,
|
|
PikaProgress *progress)
|
|
{
|
|
PikaColorTransform *transform;
|
|
guint flags = 0;
|
|
const Babl *src_format;
|
|
const Babl *dest_format;
|
|
|
|
g_return_if_fail (GEGL_IS_BUFFER (src_buffer));
|
|
g_return_if_fail (PIKA_IS_COLOR_PROFILE (src_profile));
|
|
g_return_if_fail (GEGL_IS_BUFFER (dest_buffer));
|
|
g_return_if_fail (PIKA_IS_COLOR_PROFILE (dest_profile));
|
|
g_return_if_fail (progress == NULL || PIKA_IS_PROGRESS (progress));
|
|
|
|
src_format = gegl_buffer_get_format (src_buffer);
|
|
dest_format = gegl_buffer_get_format (dest_buffer);
|
|
|
|
if (bpc)
|
|
flags |= PIKA_COLOR_TRANSFORM_FLAGS_BLACK_POINT_COMPENSATION;
|
|
|
|
flags |= PIKA_COLOR_TRANSFORM_FLAGS_NOOPTIMIZE;
|
|
|
|
transform = pika_color_transform_new (src_profile, src_format,
|
|
dest_profile, dest_format,
|
|
intent,
|
|
(PikaColorTransformFlags) flags);
|
|
|
|
if (! src_rect)
|
|
src_rect = gegl_buffer_get_extent (src_buffer);
|
|
|
|
if (! dest_rect)
|
|
dest_rect = gegl_buffer_get_extent (dest_buffer);
|
|
|
|
if (transform)
|
|
{
|
|
if (progress)
|
|
{
|
|
g_signal_connect_swapped (
|
|
transform, "progress",
|
|
G_CALLBACK (pika_gegl_convert_color_profile_progress),
|
|
progress);
|
|
}
|
|
|
|
PIKA_TIMER_START ();
|
|
|
|
gegl_parallel_distribute_area (
|
|
src_rect, PIXELS_PER_THREAD,
|
|
[=] (const GeglRectangle *src_area)
|
|
{
|
|
SHIFTED_AREA (dest, src);
|
|
|
|
pika_color_transform_process_buffer (transform,
|
|
src_buffer, src_area,
|
|
dest_buffer, dest_area);
|
|
});
|
|
|
|
PIKA_TIMER_END ("converting buffer");
|
|
|
|
g_object_unref (transform);
|
|
}
|
|
else
|
|
{
|
|
pika_gegl_buffer_copy (src_buffer, src_rect, GEGL_ABYSS_NONE,
|
|
dest_buffer, dest_rect);
|
|
|
|
if (progress)
|
|
pika_progress_set_value (progress, 1.0);
|
|
}
|
|
}
|
|
|
|
void
|
|
pika_gegl_average_color (GeglBuffer *buffer,
|
|
const GeglRectangle *rect,
|
|
gboolean clip_to_buffer,
|
|
GeglAbyssPolicy abyss_policy,
|
|
const Babl *format,
|
|
gpointer color)
|
|
{
|
|
typedef struct
|
|
{
|
|
gfloat color[4];
|
|
gint n;
|
|
} Sum;
|
|
|
|
const Babl *average_format;
|
|
GeglRectangle roi;
|
|
GSList *sums = NULL;
|
|
GSList *list;
|
|
Sum average = {};
|
|
gint c;
|
|
|
|
g_return_if_fail (GEGL_IS_BUFFER (buffer));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
average_format = babl_format_with_space ("RaGaBaA float",
|
|
babl_format_get_space (format));
|
|
|
|
if (! rect)
|
|
rect = gegl_buffer_get_extent (buffer);
|
|
|
|
if (! format)
|
|
format = gegl_buffer_get_format (buffer);
|
|
|
|
if (clip_to_buffer)
|
|
gegl_rectangle_intersect (&roi, rect, gegl_buffer_get_extent (buffer));
|
|
else
|
|
roi = *rect;
|
|
|
|
gegl_parallel_distribute_area (
|
|
&roi, PIXELS_PER_THREAD,
|
|
[&] (const GeglRectangle *area)
|
|
{
|
|
Sum *sum;
|
|
GeglBufferIterator *iter;
|
|
gfloat color[4] = {};
|
|
gint n = 0;
|
|
|
|
iter = gegl_buffer_iterator_new (buffer, area, 0, average_format,
|
|
GEGL_BUFFER_READ, abyss_policy, 1);
|
|
|
|
while (gegl_buffer_iterator_next (iter))
|
|
{
|
|
const gfloat *p = (const gfloat *) iter->items[0].data;
|
|
gint i;
|
|
|
|
for (i = 0; i < iter->length; i++)
|
|
{
|
|
gint c;
|
|
|
|
for (c = 0; c < 4; c++)
|
|
color[c] += p[c];
|
|
|
|
p += 4;
|
|
}
|
|
|
|
n += iter->length;
|
|
}
|
|
|
|
sum = g_slice_new (Sum);
|
|
|
|
memcpy (sum->color, color, sizeof (color));
|
|
sum->n = n;
|
|
|
|
pika_atomic_slist_push_head (&sums, sum);
|
|
});
|
|
|
|
for (list = sums; list; list = g_slist_next (list))
|
|
{
|
|
Sum *sum = (Sum *) list->data;
|
|
|
|
for (c = 0; c < 4; c++)
|
|
average.color[c] += sum->color[c];
|
|
|
|
average.n += sum->n;
|
|
|
|
g_slice_free (Sum, sum);
|
|
}
|
|
|
|
g_slist_free (sums);
|
|
|
|
if (average.n > 0)
|
|
{
|
|
for (c = 0; c < 4; c++)
|
|
average.color[c] /= average.n;
|
|
}
|
|
|
|
babl_process (babl_fish (average_format, format), average.color, color, 1);
|
|
}
|
|
|
|
} /* extern "C" */
|
