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