PIKApp/libpika/pikaimageconvert_pdb.c

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2023-09-26 00:35:21 +02:00
/* LIBPIKA - The PIKA Library
* Copyright (C) 1995-2003 Peter Mattis and Spencer Kimball
*
* pikaimageconvert_pdb.c
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <https://www.gnu.org/licenses/>.
*/
/* NOTE: This file is auto-generated by pdbgen.pl */
#include "config.h"
#include "stamp-pdbgen.h"
#include "pika.h"
/**
* SECTION: pikaimageconvert
* @title: pikaimageconvert
* @short_description: Conversions between RGB, indexed, and grayscale modes.
*
* Conversions between RGB, indexed, and grayscale modes.
**/
/**
* pika_image_convert_rgb:
* @image: The image.
*
* Convert specified image to RGB color
*
* This procedure converts the specified image to RGB color. This
* process requires an image in Grayscale or Indexed color mode. No
* image content is lost in this process aside from the colormap for an
* indexed image.
*
* Returns: TRUE on success.
**/
gboolean
pika_image_convert_rgb (PikaImage *image)
{
PikaValueArray *args;
PikaValueArray *return_vals;
gboolean success = TRUE;
args = pika_value_array_new_from_types (NULL,
PIKA_TYPE_IMAGE, image,
G_TYPE_NONE);
return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
"pika-image-convert-rgb",
args);
pika_value_array_unref (args);
success = PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS;
pika_value_array_unref (return_vals);
return success;
}
/**
* pika_image_convert_grayscale:
* @image: The image.
*
* Convert specified image to grayscale
*
* This procedure converts the specified image to grayscale. This
* process requires an image in RGB or Indexed color mode.
*
* Returns: TRUE on success.
**/
gboolean
pika_image_convert_grayscale (PikaImage *image)
{
PikaValueArray *args;
PikaValueArray *return_vals;
gboolean success = TRUE;
args = pika_value_array_new_from_types (NULL,
PIKA_TYPE_IMAGE, image,
G_TYPE_NONE);
return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
"pika-image-convert-grayscale",
args);
pika_value_array_unref (args);
success = PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS;
pika_value_array_unref (return_vals);
return success;
}
/**
* pika_image_convert_indexed:
* @image: The image.
* @dither_type: The dither type to use.
* @palette_type: The type of palette to use.
* @num_cols: The number of colors to quantize to, ignored unless (palette_type == PIKA_CONVERT_PALETTE_GENERATE).
* @alpha_dither: Dither transparency to fake partial opacity.
* @remove_unused: Remove unused or duplicate color entries from final palette, ignored if (palette_type == PIKA_CONVERT_PALETTE_GENERATE).
* @palette: The name of the custom palette to use, ignored unless (palette_type == PIKA_CONVERT_PALETTE_CUSTOM).
*
* Convert specified image to and Indexed image
*
* This procedure converts the specified image to 'indexed' color. This
* process requires an image in RGB or Grayscale mode. The
* 'palette_type' specifies what kind of palette to use, A type of '0'
* means to use an optimal palette of 'num_cols' generated from the
* colors in the image. A type of '1' means to re-use the previous
* palette (not currently implemented). A type of '2' means to use the
* so-called WWW-optimized palette. Type '3' means to use only black
* and white colors. A type of '4' means to use a palette from the pika
* palettes directories. The 'dither type' specifies what kind of
* dithering to use. '0' means no dithering, '1' means standard
* Floyd-Steinberg error diffusion, '2' means Floyd-Steinberg error
* diffusion with reduced bleeding, '3' means dithering based on pixel
* location ('Fixed' dithering).
*
* Returns: TRUE on success.
**/
gboolean
pika_image_convert_indexed (PikaImage *image,
PikaConvertDitherType dither_type,
PikaConvertPaletteType palette_type,
gint num_cols,
gboolean alpha_dither,
gboolean remove_unused,
const gchar *palette)
{
PikaValueArray *args;
PikaValueArray *return_vals;
gboolean success = TRUE;
args = pika_value_array_new_from_types (NULL,
PIKA_TYPE_IMAGE, image,
PIKA_TYPE_CONVERT_DITHER_TYPE, dither_type,
PIKA_TYPE_CONVERT_PALETTE_TYPE, palette_type,
G_TYPE_INT, num_cols,
G_TYPE_BOOLEAN, alpha_dither,
G_TYPE_BOOLEAN, remove_unused,
G_TYPE_STRING, palette,
G_TYPE_NONE);
return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
"pika-image-convert-indexed",
args);
pika_value_array_unref (args);
success = PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS;
pika_value_array_unref (return_vals);
return success;
}
/**
* pika_image_convert_set_dither_matrix:
* @width: Width of the matrix (0 to reset to default matrix).
* @height: Height of the matrix (0 to reset to default matrix).
* @matrix: The matrix -- all values must be >= 1.
*
* Set dither matrix for conversion to indexed
*
* This procedure sets the dither matrix used when converting images to
* INDEXED mode with positional dithering.
*
* Returns: TRUE on success.
*
* Since: 2.4
**/
gboolean
pika_image_convert_set_dither_matrix (gint width,
gint height,
GBytes *matrix)
{
PikaValueArray *args;
PikaValueArray *return_vals;
gboolean success = TRUE;
args = pika_value_array_new_from_types (NULL,
G_TYPE_INT, width,
G_TYPE_INT, height,
G_TYPE_BYTES, matrix,
G_TYPE_NONE);
return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
"pika-image-convert-set-dither-matrix",
args);
pika_value_array_unref (args);
success = PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS;
pika_value_array_unref (return_vals);
return success;
}
/**
* pika_image_convert_precision:
* @image: The image.
* @precision: The new precision.
*
* Convert the image to the specified precision
*
* This procedure converts the image to the specified precision. Note
* that indexed images cannot be converted and are always in
* PIKA_PRECISION_U8.
*
* Returns: TRUE on success.
*
* Since: 2.10
**/
gboolean
pika_image_convert_precision (PikaImage *image,
PikaPrecision precision)
{
PikaValueArray *args;
PikaValueArray *return_vals;
gboolean success = TRUE;
args = pika_value_array_new_from_types (NULL,
PIKA_TYPE_IMAGE, image,
PIKA_TYPE_PRECISION, precision,
G_TYPE_NONE);
return_vals = pika_pdb_run_procedure_array (pika_get_pdb (),
"pika-image-convert-precision",
args);
pika_value_array_unref (args);
success = PIKA_VALUES_GET_ENUM (return_vals, 0) == PIKA_PDB_SUCCESS;
pika_value_array_unref (return_vals);
return success;
}