159 lines
4.3 KiB
C
159 lines
4.3 KiB
C
/* save with libMagick
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*
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* 22/12/17 dlemstra
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* 6/2/19 DarthSim
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* - fix GraphicsMagick support
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* 17/2/19
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* - support ICC, XMP, EXIF, IPTC metadata
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* - write with a single call to vips_sink_disc()
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* 29/6/19
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* - support "strip" option
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* 6/7/19 [deftomat]
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* - support array of delays
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* 5/8/19 DarthSim
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* - support GIF optimization
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* 21/4/21 kleisauke
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* - move GObject part to vips2magick.c
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <glib/gi18n-lib.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <vips/vips.h>
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/**
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* vips_magicksave: (method)
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* @in: image to save
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* @filename: file to write to
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* @...: %NULL-terminated list of optional named arguments
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*
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* Optional arguments:
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*
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* * @quality: %gint, quality factor
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* * @format: %gchararray, format to save as
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* * @optimize_gif_frames: %gboolean, apply GIF frames optimization
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* * @optimize_gif_transparency: %gboolean, apply GIF transparency optimization
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* * @bitdepth: %gint, number of bits per pixel
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*
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* Write an image using libMagick.
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*
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* Use @quality to set the quality factor. Default 0.
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*
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* Use @format to explicitly set the save format, for example, "BMP". Otherwise
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* the format is guessed from the filename suffix.
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*
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* If @optimize_gif_frames is set, GIF frames are cropped to the smallest size
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* while preserving the results of the GIF animation. This takes some time for
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* computation but saves some time on encoding and produces smaller files in
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* some cases.
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*
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* If @optimize_gif_transparency is set, pixels that don't change the image
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* through animation are made transparent. This takes some time for computation
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* but saves some time on encoding and produces smaller files in some cases.
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*
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* @bitdepth specifies the number of bits per pixel. The image will be quantized
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* and dithered if the value is within the valid range (1 to 8).
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*
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* See also: vips_magicksave_buffer(), vips_magickload().
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*
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* Returns: 0 on success, -1 on error.
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*/
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int
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vips_magicksave( VipsImage *in, const char *filename, ... )
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{
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va_list ap;
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int result;
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va_start( ap, filename );
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result = vips_call_split( "magicksave", ap, in, filename );
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va_end( ap );
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return( result );
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}
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/**
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* vips_magicksave_buffer: (method)
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* @in: image to save
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* @buf: (array length=len) (element-type guint8): return output buffer here
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* @len: (type gsize): return output length here
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* @...: %NULL-terminated list of optional named arguments
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*
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* Optional arguments:
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*
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* * @quality: %gint, quality factor
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* * @format: %gchararray, format to save as
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* * @optimize_gif_frames: %gboolean, apply GIF frames optimization
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* * @optimize_gif_transparency: %gboolean, apply GIF transparency optimization
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* * @bitdepth: %gint, number of bits per pixel
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*
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* As vips_magicksave(), but save to a memory buffer.
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*
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* The address of the buffer is returned in @obuf, the length of the buffer in
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* @olen. You are responsible for freeing the buffer with g_free() when you
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* are done with it.
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*
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* See also: vips_magicksave(), vips_image_write_to_file().
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*
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* Returns: 0 on success, -1 on error.
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*/
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int
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vips_magicksave_buffer( VipsImage *in, void **buf, size_t *len, ... )
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{
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va_list ap;
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VipsArea *area;
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int result;
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area = NULL;
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va_start( ap, len );
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result = vips_call_split( "magicksave_buffer", ap, in, &area );
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va_end( ap );
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if( !result &&
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area ) {
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if( buf ) {
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*buf = area->data;
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area->free_fn = NULL;
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}
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if( len )
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*len = area->length;
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vips_area_unref( area );
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}
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return( result );
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}
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