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