2013-08-06 17:18:30 +02:00
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/* save to webp
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*
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* 24/11/11
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* - wrap a class around the webp writer
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2019-01-15 10:36:31 +01:00
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* 29/10/18
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* - add animated webp support
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* 15/1/19 lovell
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* - add @reduction_effort
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2013-08-06 17:18:30 +02:00
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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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/*
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#define DEBUG_VERBOSE
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#define DEBUG
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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 <vips/intl.h>
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#include <stdlib.h>
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#include <vips/vips.h>
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2016-10-15 13:29:14 +02:00
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#include "pforeign.h"
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2016-05-24 11:57:02 +02:00
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2016-10-15 13:29:14 +02:00
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#ifdef HAVE_LIBWEBP
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2013-08-06 17:18:30 +02:00
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typedef struct _VipsForeignSaveWebp {
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VipsForeignSave parent_object;
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/* Quality factor.
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*/
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int Q;
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2013-08-06 22:56:31 +02:00
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/* Turn on lossless encode.
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*/
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gboolean lossless;
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2016-04-22 19:54:19 +02:00
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/* Lossy compression preset.
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*/
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VipsForeignWebpPreset preset;
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2016-04-23 01:20:41 +02:00
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/* Enable smart chroma subsampling.
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*/
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gboolean smart_subsample;
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2016-04-23 02:00:32 +02:00
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/* Use preprocessing in lossless mode.
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*/
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gboolean near_lossless;
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2016-04-23 02:41:59 +02:00
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/* Alpha quality.
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*/
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int alpha_q;
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2019-01-14 20:55:52 +01:00
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/* Level of CPU effort to reduce file size.
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*/
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int reduction_effort;
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2018-11-06 18:20:35 +01:00
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/* Animated webp options.
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*/
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/* Attempt to minimise size
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*/
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gboolean min_size;
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/* Min between key frames.
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*/
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int kmin;
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/* Max between keyframes.
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*/
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int kmax;
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2013-08-06 17:18:30 +02:00
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} VipsForeignSaveWebp;
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typedef VipsForeignSaveClass VipsForeignSaveWebpClass;
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G_DEFINE_ABSTRACT_TYPE( VipsForeignSaveWebp, vips_foreign_save_webp,
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VIPS_TYPE_FOREIGN_SAVE );
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#define UC VIPS_FORMAT_UCHAR
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/* Type promotion for save ... just always go to uchar.
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*/
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static int bandfmt_webp[10] = {
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/* UC C US S UI I F X D DX */
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UC, UC, UC, UC, UC, UC, UC, UC, UC, UC
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};
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static void
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vips_foreign_save_webp_class_init( VipsForeignSaveWebpClass *class )
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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2014-04-23 10:26:44 +02:00
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VipsForeignClass *foreign_class = (VipsForeignClass *) class;
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2013-08-06 17:18:30 +02:00
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VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;
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gobject_class->set_property = vips_object_set_property;
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gobject_class->get_property = vips_object_get_property;
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object_class->nickname = "webpsave_base";
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object_class->description = _( "save webp" );
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2014-04-23 10:26:44 +02:00
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foreign_class->suffs = vips__webp_suffs;
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2015-04-17 17:59:28 +02:00
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save_class->saveable = VIPS_SAVEABLE_RGBA_ONLY;
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2013-08-06 17:18:30 +02:00
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save_class->format_table = bandfmt_webp;
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VIPS_ARG_INT( class, "Q", 10,
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_( "Q" ),
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_( "Q factor" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, Q ),
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2016-04-23 02:00:32 +02:00
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0, 100, 75 );
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2013-08-06 17:18:30 +02:00
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2013-08-06 22:56:31 +02:00
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VIPS_ARG_BOOL( class, "lossless", 11,
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_( "lossless" ),
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_( "enable lossless compression" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, lossless ),
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FALSE );
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2016-04-22 19:54:19 +02:00
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VIPS_ARG_ENUM( class, "preset", 12,
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_( "preset" ),
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_( "Preset for lossy compression" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, preset ),
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VIPS_TYPE_FOREIGN_WEBP_PRESET,
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VIPS_FOREIGN_WEBP_PRESET_DEFAULT );
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2016-04-23 01:20:41 +02:00
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VIPS_ARG_BOOL( class, "smart_subsample", 13,
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_( "Smart subsampling" ),
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_( "Enable high quality chroma subsampling" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, smart_subsample ),
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FALSE );
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2016-04-23 02:00:32 +02:00
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VIPS_ARG_BOOL( class, "near_lossless", 14,
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_( "Near lossless" ),
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_( "Enable preprocessing in lossless mode (uses Q)" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, near_lossless ),
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FALSE );
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2016-04-23 02:41:59 +02:00
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VIPS_ARG_INT( class, "alpha_q", 15,
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_( "Alpha quality" ),
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_( "Change alpha plane fidelity for lossy compression" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, alpha_q ),
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0, 100, 100 );
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2018-11-06 18:20:35 +01:00
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VIPS_ARG_BOOL( class, "min_size", 16,
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_( "Minimise size" ),
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_( "Optimise for minium size" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, min_size ),
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FALSE );
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VIPS_ARG_INT( class, "kmin", 17,
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_( "Minimum keyframe spacing" ),
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_( "Minimum number of frames between key frames" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, kmin ),
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0, INT_MAX, INT_MAX - 1 );
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VIPS_ARG_INT( class, "kmax", 18,
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_( "Maximum keyframe spacing" ),
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_( "Maximum number of frames between key frames" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, kmax ),
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0, INT_MAX, INT_MAX );
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2019-01-14 20:55:52 +01:00
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VIPS_ARG_INT( class, "reduction_effort", 19,
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_( "Reduction effort" ),
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_( "Level of CPU effort to reduce file size" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveWebp, reduction_effort ),
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0, 6, 4 );
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2013-08-06 17:18:30 +02:00
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}
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static void
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vips_foreign_save_webp_init( VipsForeignSaveWebp *webp )
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{
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2016-04-23 02:41:59 +02:00
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webp->Q = 75;
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2016-05-09 13:08:11 +02:00
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webp->alpha_q = 100;
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2019-01-14 20:55:52 +01:00
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webp->reduction_effort = 4;
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2018-11-06 18:20:35 +01:00
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/* ie. keyframes disabled by default.
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*/
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webp->kmin = INT_MAX - 1;
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webp->kmax = INT_MAX;
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2013-08-06 17:18:30 +02:00
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}
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2019-10-15 17:56:03 +02:00
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typedef struct _VipsForeignSaveWebpStream {
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VipsForeignSaveWebp parent_object;
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2019-12-29 22:40:21 +01:00
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VipsTarget *target;
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2019-10-15 17:56:03 +02:00
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} VipsForeignSaveWebpStream;
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typedef VipsForeignSaveWebpClass VipsForeignSaveWebpStreamClass;
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G_DEFINE_TYPE( VipsForeignSaveWebpStream, vips_foreign_save_webp_stream,
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vips_foreign_save_webp_get_type() );
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static int
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vips_foreign_save_webp_stream_build( VipsObject *object )
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{
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VipsForeignSave *save = (VipsForeignSave *) object;
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VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
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VipsForeignSaveWebpStream *stream =
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(VipsForeignSaveWebpStream *) object;
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if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_stream_parent_class )->
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build( object ) )
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return( -1 );
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2019-12-29 22:40:21 +01:00
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if( vips__webp_write_stream( save->ready, stream->target,
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2019-10-15 17:56:03 +02:00
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webp->Q, webp->lossless, webp->preset,
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webp->smart_subsample, webp->near_lossless,
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webp->alpha_q, webp->reduction_effort,
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webp->min_size, webp->kmin, webp->kmax,
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save->strip ) )
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return( -1 );
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return( 0 );
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}
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static void
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vips_foreign_save_webp_stream_class_init(
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VipsForeignSaveWebpStreamClass *class )
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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gobject_class->set_property = vips_object_set_property;
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gobject_class->get_property = vips_object_get_property;
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object_class->nickname = "webpsave_stream";
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object_class->description = _( "save image to webp stream" );
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object_class->build = vips_foreign_save_webp_stream_build;
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2019-12-29 22:40:21 +01:00
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VIPS_ARG_OBJECT( class, "target", 1,
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_( "target" ),
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2019-10-15 17:56:03 +02:00
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_( "Stream to save to" ),
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VIPS_ARGUMENT_REQUIRED_INPUT,
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2019-12-29 22:40:21 +01:00
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G_STRUCT_OFFSET( VipsForeignSaveWebpStream, target ),
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VIPS_TYPE_TARGET );
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2019-10-15 17:56:03 +02:00
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}
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static void
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vips_foreign_save_webp_stream_init( VipsForeignSaveWebpStream *stream )
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{
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}
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2013-08-06 17:18:30 +02:00
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typedef struct _VipsForeignSaveWebpFile {
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VipsForeignSaveWebp parent_object;
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/* Filename for save.
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*/
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char *filename;
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} VipsForeignSaveWebpFile;
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typedef VipsForeignSaveWebpClass VipsForeignSaveWebpFileClass;
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G_DEFINE_TYPE( VipsForeignSaveWebpFile, vips_foreign_save_webp_file,
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vips_foreign_save_webp_get_type() );
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static int
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vips_foreign_save_webp_file_build( VipsObject *object )
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{
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VipsForeignSave *save = (VipsForeignSave *) object;
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VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
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VipsForeignSaveWebpFile *file = (VipsForeignSaveWebpFile *) object;
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2019-12-29 22:40:21 +01:00
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VipsTarget *target;
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2019-10-15 17:56:03 +02:00
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2013-08-06 17:18:30 +02:00
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if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_file_parent_class )->
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build( object ) )
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return( -1 );
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|
2019-12-29 22:40:21 +01:00
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if( !(target = vips_target_new_to_file( file->filename )) )
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2019-10-15 17:56:03 +02:00
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return( -1 );
|
2019-12-29 22:40:21 +01:00
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|
|
if( vips__webp_write_stream( save->ready, target,
|
2016-04-23 01:20:41 +02:00
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|
webp->Q, webp->lossless, webp->preset,
|
2016-04-23 02:41:59 +02:00
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webp->smart_subsample, webp->near_lossless,
|
2019-01-14 20:55:52 +01:00
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webp->alpha_q, webp->reduction_effort,
|
2018-11-06 18:20:35 +01:00
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|
|
webp->min_size, webp->kmin, webp->kmax,
|
2019-10-15 17:56:03 +02:00
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|
|
save->strip ) ) {
|
2019-12-29 22:40:21 +01:00
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VIPS_UNREF( target );
|
2013-08-06 17:18:30 +02:00
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return( -1 );
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2019-10-15 17:56:03 +02:00
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|
|
}
|
2019-12-29 22:40:21 +01:00
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|
|
VIPS_UNREF( target );
|
2013-08-06 17:18:30 +02:00
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|
return( 0 );
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|
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}
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|
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|
|
static void
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|
|
vips_foreign_save_webp_file_class_init( VipsForeignSaveWebpFileClass *class )
|
|
|
|
{
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|
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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|
|
|
VipsObjectClass *object_class = (VipsObjectClass *) class;
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|
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|
gobject_class->set_property = vips_object_set_property;
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|
gobject_class->get_property = vips_object_get_property;
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|
object_class->nickname = "webpsave";
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|
|
object_class->description = _( "save image to webp file" );
|
|
|
|
object_class->build = vips_foreign_save_webp_file_build;
|
|
|
|
|
|
|
|
VIPS_ARG_STRING( class, "filename", 1,
|
|
|
|
_( "Filename" ),
|
|
|
|
_( "Filename to save to" ),
|
|
|
|
VIPS_ARGUMENT_REQUIRED_INPUT,
|
|
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebpFile, filename ),
|
|
|
|
NULL );
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
vips_foreign_save_webp_file_init( VipsForeignSaveWebpFile *file )
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
typedef struct _VipsForeignSaveWebpBuffer {
|
|
|
|
VipsForeignSaveWebp parent_object;
|
|
|
|
|
|
|
|
/* Save to a buffer.
|
|
|
|
*/
|
|
|
|
VipsArea *buf;
|
|
|
|
|
|
|
|
} VipsForeignSaveWebpBuffer;
|
|
|
|
|
|
|
|
typedef VipsForeignSaveWebpClass VipsForeignSaveWebpBufferClass;
|
|
|
|
|
|
|
|
G_DEFINE_TYPE( VipsForeignSaveWebpBuffer, vips_foreign_save_webp_buffer,
|
|
|
|
vips_foreign_save_webp_get_type() );
|
|
|
|
|
|
|
|
static int
|
|
|
|
vips_foreign_save_webp_buffer_build( VipsObject *object )
|
|
|
|
{
|
|
|
|
VipsForeignSave *save = (VipsForeignSave *) object;
|
|
|
|
VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
|
2019-10-15 17:56:03 +02:00
|
|
|
VipsForeignSaveWebpBuffer *buffer =
|
|
|
|
(VipsForeignSaveWebpBuffer *) object;
|
2013-08-06 17:18:30 +02:00
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
VipsTarget *target;
|
2014-09-02 22:59:11 +02:00
|
|
|
VipsBlob *blob;
|
2013-08-06 17:18:30 +02:00
|
|
|
|
|
|
|
if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_buffer_parent_class )->
|
|
|
|
build( object ) )
|
|
|
|
return( -1 );
|
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
if( !(target = vips_target_new_to_memory()) )
|
2019-10-15 17:56:03 +02:00
|
|
|
return( -1 );
|
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
if( vips__webp_write_stream( save->ready, target,
|
2016-04-23 01:20:41 +02:00
|
|
|
webp->Q, webp->lossless, webp->preset,
|
2016-04-23 02:41:59 +02:00
|
|
|
webp->smart_subsample, webp->near_lossless,
|
2019-01-14 20:55:52 +01:00
|
|
|
webp->alpha_q, webp->reduction_effort,
|
2018-11-06 18:20:35 +01:00
|
|
|
webp->min_size, webp->kmin, webp->kmax,
|
2019-10-15 17:56:03 +02:00
|
|
|
save->strip ) ) {
|
2019-12-29 22:40:21 +01:00
|
|
|
VIPS_UNREF( target );
|
2013-08-06 17:18:30 +02:00
|
|
|
return( -1 );
|
2019-10-15 17:56:03 +02:00
|
|
|
}
|
2013-08-06 17:18:30 +02:00
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
g_object_get( target, "blob", &blob, NULL );
|
2019-10-15 17:56:03 +02:00
|
|
|
g_object_set( buffer, "buffer", blob, NULL );
|
2014-09-02 22:59:11 +02:00
|
|
|
vips_area_unref( VIPS_AREA( blob ) );
|
2013-08-06 17:18:30 +02:00
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
VIPS_UNREF( target );
|
2019-12-21 06:13:54 +01:00
|
|
|
|
2013-08-06 17:18:30 +02:00
|
|
|
return( 0 );
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
vips_foreign_save_webp_buffer_class_init(
|
|
|
|
VipsForeignSaveWebpBufferClass *class )
|
|
|
|
{
|
|
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
|
|
|
|
VipsObjectClass *object_class = (VipsObjectClass *) class;
|
|
|
|
|
|
|
|
gobject_class->set_property = vips_object_set_property;
|
|
|
|
gobject_class->get_property = vips_object_get_property;
|
|
|
|
|
|
|
|
object_class->nickname = "webpsave_buffer";
|
|
|
|
object_class->description = _( "save image to webp buffer" );
|
|
|
|
object_class->build = vips_foreign_save_webp_buffer_build;
|
|
|
|
|
|
|
|
VIPS_ARG_BOXED( class, "buffer", 1,
|
|
|
|
_( "Buffer" ),
|
|
|
|
_( "Buffer to save to" ),
|
|
|
|
VIPS_ARGUMENT_REQUIRED_OUTPUT,
|
|
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebpBuffer, buf ),
|
|
|
|
VIPS_TYPE_BLOB );
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
vips_foreign_save_webp_buffer_init( VipsForeignSaveWebpBuffer *file )
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
typedef struct _VipsForeignSaveWebpMime {
|
|
|
|
VipsForeignSaveWebp parent_object;
|
|
|
|
|
|
|
|
} VipsForeignSaveWebpMime;
|
|
|
|
|
|
|
|
typedef VipsForeignSaveWebpClass VipsForeignSaveWebpMimeClass;
|
|
|
|
|
|
|
|
G_DEFINE_TYPE( VipsForeignSaveWebpMime, vips_foreign_save_webp_mime,
|
|
|
|
vips_foreign_save_webp_get_type() );
|
|
|
|
|
|
|
|
static int
|
|
|
|
vips_foreign_save_webp_mime_build( VipsObject *object )
|
|
|
|
{
|
|
|
|
VipsForeignSave *save = (VipsForeignSave *) object;
|
|
|
|
VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
|
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
VipsTarget *target;
|
2019-10-15 17:56:03 +02:00
|
|
|
VipsBlob *blob;
|
|
|
|
void *data;
|
|
|
|
size_t len;
|
2013-08-06 17:18:30 +02:00
|
|
|
|
|
|
|
if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_mime_parent_class )->
|
|
|
|
build( object ) )
|
|
|
|
return( -1 );
|
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
if( !(target = vips_target_new_to_memory()) )
|
2019-10-15 17:56:03 +02:00
|
|
|
return( -1 );
|
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
if( vips__webp_write_stream( save->ready, target,
|
2016-04-23 01:20:41 +02:00
|
|
|
webp->Q, webp->lossless, webp->preset,
|
2016-04-23 02:41:59 +02:00
|
|
|
webp->smart_subsample, webp->near_lossless,
|
2019-01-14 20:55:52 +01:00
|
|
|
webp->alpha_q, webp->reduction_effort,
|
2018-11-06 18:20:35 +01:00
|
|
|
webp->min_size, webp->kmin, webp->kmax,
|
2019-10-15 17:56:03 +02:00
|
|
|
save->strip ) ) {
|
2019-12-29 22:40:21 +01:00
|
|
|
VIPS_UNREF( target );
|
2013-08-06 17:18:30 +02:00
|
|
|
return( -1 );
|
2019-10-15 17:56:03 +02:00
|
|
|
}
|
2013-08-06 17:18:30 +02:00
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
g_object_get( target, "blob", &blob, NULL );
|
2019-10-15 17:56:03 +02:00
|
|
|
data = VIPS_AREA( blob )->data;
|
|
|
|
len = VIPS_AREA( blob )->length;
|
|
|
|
vips_area_unref( VIPS_AREA( blob ) );
|
|
|
|
|
|
|
|
printf( "Content-length: %zu\r\n", len );
|
2013-08-06 17:18:30 +02:00
|
|
|
printf( "Content-type: image/webp\r\n" );
|
|
|
|
printf( "\r\n" );
|
2019-10-15 17:56:03 +02:00
|
|
|
(void) fwrite( data, sizeof( char ), len, stdout );
|
2013-08-06 17:18:30 +02:00
|
|
|
fflush( stdout );
|
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
VIPS_UNREF( target );
|
2013-08-06 17:18:30 +02:00
|
|
|
|
|
|
|
return( 0 );
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
vips_foreign_save_webp_mime_class_init( VipsForeignSaveWebpMimeClass *class )
|
|
|
|
{
|
|
|
|
VipsObjectClass *object_class = (VipsObjectClass *) class;
|
|
|
|
|
|
|
|
object_class->nickname = "webpsave_mime";
|
|
|
|
object_class->description = _( "save image to webp mime" );
|
|
|
|
object_class->build = vips_foreign_save_webp_mime_build;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
vips_foreign_save_webp_mime_init( VipsForeignSaveWebpMime *mime )
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /*HAVE_LIBWEBP*/
|
2016-05-24 11:57:02 +02:00
|
|
|
|
|
|
|
/**
|
2017-09-27 00:39:06 +02:00
|
|
|
* vips_webpsave: (method)
|
2016-05-24 11:57:02 +02:00
|
|
|
* @in: image to save
|
|
|
|
* @filename: file to write to
|
|
|
|
* @...: %NULL-terminated list of optional named arguments
|
|
|
|
*
|
|
|
|
* Optional arguments:
|
|
|
|
*
|
2016-11-08 15:42:54 +01:00
|
|
|
* * @Q: %gint, quality factor
|
|
|
|
* * @lossless: %gboolean, enables lossless compression
|
|
|
|
* * @preset: #VipsForeignWebpPreset, choose lossy compression preset
|
|
|
|
* * @smart_subsample: %gboolean, enables high quality chroma subsampling
|
|
|
|
* * @near_lossless: %gboolean, preprocess in lossless mode (controlled by Q)
|
|
|
|
* * @alpha_q: %gint, set alpha quality in lossless mode
|
2019-01-14 20:55:52 +01:00
|
|
|
* * @reduction_effort: %gint, level of CPU effort to reduce file size
|
2018-11-06 18:20:35 +01:00
|
|
|
* * @min_size: %gboolean, minimise size
|
|
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
2016-11-08 15:42:54 +01:00
|
|
|
* * @strip: %gboolean, remove all metadata from image
|
2016-05-24 11:57:02 +02:00
|
|
|
*
|
|
|
|
* Write an image to a file in WebP format.
|
|
|
|
*
|
|
|
|
* By default, images are saved in lossy format, with
|
|
|
|
* @Q giving the WebP quality factor. It has the range 0 - 100, with the
|
|
|
|
* default 75.
|
|
|
|
*
|
|
|
|
* Use @preset to hint the image type to the lossy compressor. The default is
|
|
|
|
* #VIPS_FOREIGN_WEBP_PRESET_DEFAULT.
|
2019-01-15 10:36:31 +01:00
|
|
|
*
|
2016-05-24 11:57:02 +02:00
|
|
|
* Set @smart_subsample to enable high quality chroma subsampling.
|
2019-01-15 10:36:31 +01:00
|
|
|
*
|
2016-05-24 11:57:02 +02:00
|
|
|
* Use @alpha_q to set the quality for the alpha channel in lossy mode. It has
|
|
|
|
* the range 1 - 100, with the default 100.
|
2019-01-15 10:36:31 +01:00
|
|
|
*
|
2019-01-14 20:55:52 +01:00
|
|
|
* Use @reduction_effort to control how much CPU time to spend attempting to
|
|
|
|
* reduce file size. A higher value means more effort and therefore CPU time
|
|
|
|
* should be spent. It has the range 0-6 and a default value of 4.
|
2016-05-24 11:57:02 +02:00
|
|
|
*
|
|
|
|
* Set @lossless to use lossless compression, or combine @near_lossless
|
|
|
|
* with @Q 80, 60, 40 or 20 to apply increasing amounts of preprocessing
|
|
|
|
* which improves the near-lossless compression ratio by up to 50%.
|
|
|
|
*
|
2019-08-06 15:46:43 +02:00
|
|
|
* For animated webp output, @min_size will try to optimize for minimum size.
|
2018-11-06 18:20:35 +01:00
|
|
|
*
|
|
|
|
* For animated webp output, @kmax sets the maximum number of frames between
|
|
|
|
* keyframes. Setting 0 means only keyframes. @kmin sets the minimum number of
|
|
|
|
* frames between frames. Setting 0 means no keyframes. By default, keyframes
|
|
|
|
* are disabled.
|
|
|
|
*
|
2019-12-17 16:28:04 +01:00
|
|
|
* Use the metadata items `loop` and `delay` to set the number of
|
2019-06-21 15:06:22 +02:00
|
|
|
* loops for the animation and the frame delays.
|
2018-11-28 08:17:02 +01:00
|
|
|
*
|
2016-11-08 15:42:54 +01:00
|
|
|
* The writer will attach ICC, EXIF and XMP metadata, unless @strip is set to
|
2018-11-06 18:20:35 +01:00
|
|
|
* %TRUE.
|
2016-11-08 15:42:54 +01:00
|
|
|
*
|
2016-05-24 11:57:02 +02:00
|
|
|
* See also: vips_webpload(), vips_image_write_to_file().
|
|
|
|
*
|
|
|
|
* Returns: 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
vips_webpsave( VipsImage *in, const char *filename, ... )
|
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
int result;
|
|
|
|
|
|
|
|
va_start( ap, filename );
|
|
|
|
result = vips_call_split( "webpsave", ap, in, filename );
|
|
|
|
va_end( ap );
|
|
|
|
|
|
|
|
return( result );
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2017-09-27 00:39:06 +02:00
|
|
|
* vips_webpsave_buffer: (method)
|
2016-05-24 11:57:02 +02:00
|
|
|
* @in: image to save
|
2017-09-27 00:39:06 +02:00
|
|
|
* @buf: (out) (array length=len) (element-type guint8): return output buffer here
|
2016-05-24 11:57:02 +02:00
|
|
|
* @len: return output length here
|
|
|
|
* @...: %NULL-terminated list of optional named arguments
|
|
|
|
*
|
|
|
|
* Optional arguments:
|
|
|
|
*
|
2016-11-08 15:42:54 +01:00
|
|
|
* * @Q: %gint, quality factor
|
|
|
|
* * @lossless: %gboolean, enables lossless compression
|
|
|
|
* * @preset: #VipsForeignWebpPreset, choose lossy compression preset
|
|
|
|
* * @smart_subsample: %gboolean, enables high quality chroma subsampling
|
|
|
|
* * @near_lossless: %gboolean, preprocess in lossless mode (controlled by Q)
|
|
|
|
* * @alpha_q: %gint, set alpha quality in lossless mode
|
2019-01-14 20:55:52 +01:00
|
|
|
* * @reduction_effort: %gint, level of CPU effort to reduce file size
|
2018-11-06 18:20:35 +01:00
|
|
|
* * @min_size: %gboolean, minimise size
|
|
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
2016-11-08 15:42:54 +01:00
|
|
|
* * @strip: %gboolean, remove all metadata from image
|
2016-05-24 11:57:02 +02:00
|
|
|
*
|
|
|
|
* As vips_webpsave(), but save to a memory buffer.
|
|
|
|
*
|
|
|
|
* The address of the buffer is returned in @buf, the length of the buffer in
|
|
|
|
* @len. You are responsible for freeing the buffer with g_free() when you
|
|
|
|
* are done with it.
|
|
|
|
*
|
|
|
|
* See also: vips_webpsave().
|
|
|
|
*
|
|
|
|
* Returns: 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
vips_webpsave_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( "webpsave_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 );
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2017-09-27 00:39:06 +02:00
|
|
|
* vips_webpsave_mime: (method)
|
2016-05-24 11:57:02 +02:00
|
|
|
* @in: image to save
|
|
|
|
* @...: %NULL-terminated list of optional named arguments
|
|
|
|
*
|
|
|
|
* Optional arguments:
|
|
|
|
*
|
2016-11-08 15:42:54 +01:00
|
|
|
* * @Q: %gint, quality factor
|
|
|
|
* * @lossless: %gboolean, enables lossless compression
|
|
|
|
* * @preset: #VipsForeignWebpPreset, choose lossy compression preset
|
|
|
|
* * @smart_subsample: %gboolean, enables high quality chroma subsampling
|
|
|
|
* * @near_lossless: %gboolean, preprocess in lossless mode (controlled by Q)
|
|
|
|
* * @alpha_q: %gint, set alpha quality in lossless mode
|
2019-01-14 20:55:52 +01:00
|
|
|
* * @reduction_effort: %gint, level of CPU effort to reduce file size
|
2018-11-06 18:20:35 +01:00
|
|
|
* * @min_size: %gboolean, minimise size
|
|
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
2016-11-08 15:42:54 +01:00
|
|
|
* * @strip: %gboolean, remove all metadata from image
|
2016-05-24 11:57:02 +02:00
|
|
|
*
|
|
|
|
* As vips_webpsave(), but save as a mime webp on stdout.
|
|
|
|
*
|
|
|
|
* See also: vips_webpsave(), vips_image_write_to_file().
|
|
|
|
*
|
|
|
|
* Returns: 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
vips_webpsave_mime( VipsImage *in, ... )
|
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
int result;
|
|
|
|
|
|
|
|
va_start( ap, in );
|
|
|
|
result = vips_call_split( "webpsave_mime", ap, in );
|
|
|
|
va_end( ap );
|
|
|
|
|
|
|
|
return( result );
|
|
|
|
}
|
2019-10-15 17:56:03 +02:00
|
|
|
|
|
|
|
/**
|
2019-12-29 22:40:21 +01:00
|
|
|
* vips_webpsave_target: (method)
|
2019-10-15 17:56:03 +02:00
|
|
|
* @in: image to save
|
2019-12-29 22:40:21 +01:00
|
|
|
* @target: save image to this stream
|
2019-10-15 17:56:03 +02:00
|
|
|
* @...: %NULL-terminated list of optional named arguments
|
|
|
|
*
|
|
|
|
* Optional arguments:
|
|
|
|
*
|
|
|
|
* * @Q: %gint, quality factor
|
|
|
|
* * @lossless: %gboolean, enables lossless compression
|
|
|
|
* * @preset: #VipsForeignWebpPreset, choose lossy compression preset
|
|
|
|
* * @smart_subsample: %gboolean, enables high quality chroma subsampling
|
|
|
|
* * @near_lossless: %gboolean, preprocess in lossless mode (controlled by Q)
|
|
|
|
* * @alpha_q: %gint, set alpha quality in lossless mode
|
|
|
|
* * @reduction_effort: %gint, level of CPU effort to reduce file size
|
|
|
|
* * @min_size: %gboolean, minimise size
|
|
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
|
|
|
* * @strip: %gboolean, remove all metadata from image
|
|
|
|
*
|
|
|
|
* As vips_webpsave(), but save to a stream.
|
|
|
|
*
|
|
|
|
* See also: vips_webpsave().
|
|
|
|
*
|
|
|
|
* Returns: 0 on success, -1 on error.
|
|
|
|
*/
|
|
|
|
int
|
2019-12-29 22:40:21 +01:00
|
|
|
vips_webpsave_target( VipsImage *in, VipsTarget *target, ... )
|
2019-10-15 17:56:03 +02:00
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
int result;
|
|
|
|
|
2019-12-29 22:40:21 +01:00
|
|
|
va_start( ap, target );
|
|
|
|
result = vips_call_split( "webpsave_stream", ap, in, target );
|
2019-10-15 17:56:03 +02:00
|
|
|
va_end( ap );
|
|
|
|
|
|
|
|
return( result );
|
|
|
|
}
|