1306 lines
33 KiB
C
1306 lines
33 KiB
C
/* 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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* 6/8/13
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* - from vips2jpeg.c
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* 31/5/16
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* - buffer write ignored lossless, thanks aaron42net
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* 2/5/16 Felix Bünemann
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* - used advanced encoding API, expose controls
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* 8/11/16
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* - add metadata write
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* 29/10/18
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* - add animated webp support
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* 29/10/18
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* - target libwebp 0.5+ and remove some ifdefs
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* - add animated webp write
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* - use libwebpmux instead of our own thing, phew
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* 15/1/19 lovell
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* - add @effort
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* 6/7/19 [deftomat]
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* - support array of delays
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* 8/7/19
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* - set loop even if we strip
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* 14/10/19
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* - revise for target IO
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* 18/7/20
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* - add @profile param to match tiff, jpg, etc.
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* 18/7/20
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* - add @profile param to match tiff, jpg, etc.
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* 30/7/21
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* - rename "reduction_effort" as "effort"
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* 7/9/22 dloebl
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* - switch to sink_disc
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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 <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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#include <vips/internal.h>
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#include "pforeign.h"
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#ifdef HAVE_LIBWEBP
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#include <webp/encode.h>
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#include <webp/types.h>
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#include <webp/mux.h>
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typedef int (*webp_import)( WebPPicture *picture,
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const uint8_t *rgb, int stride );
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typedef enum _VipsForeignSaveWebpMode {
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VIPS_FOREIGN_SAVE_WEBP_MODE_SINGLE,
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VIPS_FOREIGN_SAVE_WEBP_MODE_ANIM
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} VipsForeignSaveWebpMode;
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typedef struct _VipsForeignSaveWebp {
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VipsForeignSave parent_object;
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VipsTarget *target;
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/* Animated or single image write mode?
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* Important, because we use a different API
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* for animated WebP write.
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*/
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VipsForeignSaveWebpMode mode;
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VipsImage *image;
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int timestamp_ms;
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/* Quality factor.
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*/
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int Q;
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/* Turn on lossless encode.
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*/
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gboolean lossless;
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/* Lossy compression preset.
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*/
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VipsForeignWebpPreset preset;
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/* Enable smart chroma subsampling.
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*/
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gboolean smart_subsample;
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/* Use preprocessing in lossless mode.
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*/
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gboolean near_lossless;
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/* Alpha quality.
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*/
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int alpha_q;
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/* Level of CPU effort to reduce file size.
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*/
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int effort;
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/* Animated webp options.
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*/
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int gif_delay;
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int *delay;
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int delay_length;
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gboolean strip;
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/* Attempt to minimise size
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*/
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gboolean min_size;
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/* Allow mixed encoding (might reduce file size)
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*/
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gboolean mixed;
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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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/* Profile to embed.
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*/
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const char *profile;
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WebPConfig config;
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/* Output is written here. We can only support memory write, since we
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* handle metadata.
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*/
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WebPMemoryWriter memory_writer;
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/* Write animated webp here.
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*/
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WebPAnimEncoder *enc;
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/* Add metadata with this.
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*/
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WebPMux *mux;
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/* The current y position in the frame and the current page index.
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*/
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int write_y;
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int page_number;
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/* VipsRegion is not always contiguous, but we need contiguous RGB(A)
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* for libwebp. We need to copy each frame to a local buffer.
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*/
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VipsPel *frame_bytes;
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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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static void
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vips_foreign_save_webp_unset( VipsForeignSaveWebp *write )
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{
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WebPMemoryWriterClear( &write->memory_writer );
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VIPS_FREEF( WebPAnimEncoderDelete, write->enc );
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VIPS_FREEF( WebPMuxDelete, write->mux );
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VIPS_UNREF( write->image );
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}
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static void
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vips_foreign_save_webp_dispose( GObject *gobject )
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{
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VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) gobject;
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VIPS_UNREF( webp->target );
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VIPS_FREE( webp->frame_bytes );
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G_OBJECT_CLASS( vips_foreign_save_webp_parent_class )->
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dispose( gobject );
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}
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static gboolean
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vips_foreign_save_webp_pic_init( VipsForeignSaveWebp *write, WebPPicture *pic )
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{
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if( !WebPPictureInit( pic ) ) {
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vips_error( "webpsave", "%s", _( "picture version error" ) );
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return( FALSE );
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}
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pic->writer = WebPMemoryWrite;
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pic->custom_ptr = (void *) &write->memory_writer;
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/* Smart subsampling needs use_argb because it is applied during
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* RGB to YUV conversion.
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*/
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pic->use_argb = write->lossless ||
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write->near_lossless ||
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write->smart_subsample;
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return( TRUE );
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}
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/* Write a VipsImage into an unintialised pic.
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*/
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static int
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vips_foreign_save_webp_write_webp_image( VipsForeignSaveWebp *write,
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const VipsPel *imagedata, WebPPicture *pic )
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{
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webp_import import;
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int page_height = vips_image_get_page_height( write->image );
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if( !vips_foreign_save_webp_pic_init( write, pic ) )
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return( -1 );
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pic->width = write->image->Xsize;
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pic->height = page_height;
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if( write->image->Bands == 4 )
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import = WebPPictureImportRGBA;
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else
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import = WebPPictureImportRGB;
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if( !import( pic, imagedata,
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write->image->Xsize * write->image->Bands ) ) {
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WebPPictureFree( pic );
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vips_error( "webpsave", "%s", _( "picture memory error" ) );
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return( -1 );
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}
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return( 0 );
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}
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/* We have a complete frame --- write!
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*/
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static int
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vips_foreign_save_webp_write_frame( VipsForeignSaveWebp *webp)
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{
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WebPPicture pic;
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VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( webp );
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if( vips_foreign_save_webp_write_webp_image( webp, webp->frame_bytes,
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&pic ) )
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return( -1 );
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/* Animated write
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*/
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if( webp->mode == VIPS_FOREIGN_SAVE_WEBP_MODE_ANIM ) {
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if( !WebPAnimEncoderAdd( webp->enc,
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&pic, webp->timestamp_ms, &webp->config ) ) {
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WebPPictureFree( &pic );
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vips_error( class->nickname,
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"%s", _( "anim add error" ) );
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return( -1 );
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}
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/* Adjust current timestamp
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*/
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if( webp->delay &&
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webp->page_number < webp->delay_length )
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webp->timestamp_ms += webp->delay[webp->page_number];
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else
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webp->timestamp_ms += webp->gif_delay * 10;
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}
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else {
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/* Single image write
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*/
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if( !WebPEncode( &webp->config, &pic ) ) {
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WebPPictureFree( &pic );
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vips_error( "webpsave", "%s",
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_( "unable to encode" ) );
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return( -1 );
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}
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}
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WebPPictureFree( &pic );
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return( 0 );
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}
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/* Another chunk of pixels have arrived from the pipeline. Add to frame, and
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* if the frame completes, compress and write to the target.
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*/
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static int
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vips_foreign_save_webp_sink_disc( VipsRegion *region, VipsRect *area, void *a )
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{
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VipsForeignSaveWebp *webp = (VipsForeignSaveWebp*) a;
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int i;
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int page_height = vips_image_get_page_height( webp->image );
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/* Write the new pixels into the frame.
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*/
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for( i = 0; i < area->height; i++ ) {
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memcpy( webp->frame_bytes + area->width *
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webp->write_y * webp->image->Bands,
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VIPS_REGION_ADDR( region, 0, area->top + i ),
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area->width * webp->image->Bands );
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webp->write_y += 1;
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/* If we've filled the frame, write and move it down.
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*/
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if( webp->write_y == page_height ) {
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if( vips_foreign_save_webp_write_frame( webp ) )
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return( -1 );
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webp->write_y = 0;
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webp->page_number += 1;
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}
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}
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return( 0 );
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}
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static WebPPreset
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get_preset( VipsForeignWebpPreset preset )
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{
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switch( preset ) {
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case VIPS_FOREIGN_WEBP_PRESET_DEFAULT:
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return( WEBP_PRESET_DEFAULT );
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case VIPS_FOREIGN_WEBP_PRESET_PICTURE:
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return( WEBP_PRESET_PICTURE );
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case VIPS_FOREIGN_WEBP_PRESET_PHOTO:
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return( WEBP_PRESET_PHOTO );
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case VIPS_FOREIGN_WEBP_PRESET_DRAWING:
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return( WEBP_PRESET_DRAWING );
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case VIPS_FOREIGN_WEBP_PRESET_ICON:
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return( WEBP_PRESET_ICON );
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case VIPS_FOREIGN_WEBP_PRESET_TEXT:
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return( WEBP_PRESET_TEXT );
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default:
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g_assert_not_reached();
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}
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/* Keep -Wall happy.
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*/
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return( -1 );
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}
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static void
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vips_webp_set_count( VipsForeignSaveWebp *write, int loop_count )
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{
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uint32_t features;
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if( WebPMuxGetFeatures( write->mux, &features ) == WEBP_MUX_OK &&
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(features & ANIMATION_FLAG) ) {
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WebPMuxAnimParams params;
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if( WebPMuxGetAnimationParams( write->mux, ¶ms ) ==
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WEBP_MUX_OK ) {
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params.loop_count = loop_count;
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WebPMuxSetAnimationParams( write->mux, ¶ms );
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}
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}
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}
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static int
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vips_webp_set_chunk( VipsForeignSaveWebp *write,
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const char *webp_name, const void *data, size_t length )
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{
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WebPData chunk;
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chunk.bytes = data;
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chunk.size = length;
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if( WebPMuxSetChunk( write->mux, webp_name, &chunk, 1 ) !=
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WEBP_MUX_OK ) {
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vips_error( "webpsave",
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"%s", _( "chunk add error" ) );
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return( -1 );
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}
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return( 0 );
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}
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static int
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vips_webp_add_chunks( VipsForeignSaveWebp *write )
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{
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int i;
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for( i = 0; i < vips__n_webp_names; i++ ) {
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const char *vips_name = vips__webp_names[i].vips;
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const char *webp_name = vips__webp_names[i].webp;
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if( vips_image_get_typeof( write->image, vips_name ) ) {
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const void *data;
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size_t length;
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if( vips_image_get_blob( write->image,
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vips_name, &data, &length ) ||
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vips_webp_set_chunk( write,
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webp_name, data, length ) )
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return( -1 );
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}
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}
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return( 0 );
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}
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static int
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vips_webp_add_metadata( VipsForeignSaveWebp *write )
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{
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WebPData data;
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data.bytes = write->memory_writer.mem;
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data.size = write->memory_writer.size;
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/* Parse what we have.
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*/
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if( !(write->mux = WebPMuxCreate( &data, 1 )) ) {
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vips_error( "webpsave", "%s", _( "mux error" ) );
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return( -1 );
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}
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if( vips_image_get_typeof( write->image, "loop" ) ) {
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int loop;
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if( vips_image_get_int( write->image, "loop", &loop ) )
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return( -1 );
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vips_webp_set_count( write, loop );
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}
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/* DEPRECATED "gif-loop"
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*/
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else if ( vips_image_get_typeof( write->image, "gif-loop" ) ) {
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int gif_loop;
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if( vips_image_get_int( write->image, "gif-loop", &gif_loop ) )
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return( -1 );
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vips_webp_set_count( write, gif_loop == 0 ? 0 : gif_loop + 1 );
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}
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/* Add extra metadata.
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*/
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if( !write->strip ) {
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/* We need to rebuild exif from the other image tags before
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* writing the metadata.
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*/
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if( vips__exif_update( write->image ) )
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return( -1 );
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/* Override profile.
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*/
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if( write->profile &&
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vips__profile_set( write->image, write->profile ) )
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return( -1 );
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if( vips_webp_add_chunks( write ) )
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return( -1 );
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}
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if( WebPMuxAssemble( write->mux, &data ) != WEBP_MUX_OK ) {
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vips_error( "webpsave", "%s", _( "mux error" ) );
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return( -1 );
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}
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/* Free old stuff, reinit with new stuff.
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*/
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WebPMemoryWriterClear( &write->memory_writer );
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write->memory_writer.mem = (uint8_t *) data.bytes;
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write->memory_writer.size = data.size;
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return( 0 );
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}
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static int
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vips_foreign_save_webp_init_config( VipsForeignSaveWebp *webp ) {
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/* Init WebP config.
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*/
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WebPMemoryWriterInit( &webp->memory_writer );
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if( !WebPConfigInit( &webp->config ) ) {
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vips_foreign_save_webp_unset( webp );
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vips_error( "webpsave",
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"%s", _( "config version error" ) );
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return( -1 );
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}
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/* These presets are only for lossy compression. There seems to be
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* separate API for lossless or near-lossless, see
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* WebPConfigLosslessPreset().
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*/
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if( !(webp->lossless || webp->near_lossless) &&
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!WebPConfigPreset( &webp->config, get_preset( webp->preset ),
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webp->Q ) ) {
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vips_foreign_save_webp_unset( webp );
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vips_error( "webpsave", "%s", _( "config version error" ) );
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return( -1 );
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}
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webp->config.lossless = webp->lossless || webp->near_lossless;
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webp->config.alpha_quality = webp->alpha_q;
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webp->config.method = webp->effort;
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if( webp->lossless )
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webp->config.quality = webp->Q;
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if( webp->near_lossless )
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webp->config.near_lossless = webp->Q;
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if( webp->smart_subsample )
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webp->config.use_sharp_yuv = 1;
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if( !WebPValidateConfig( &webp->config ) ) {
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vips_foreign_save_webp_unset( webp );
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vips_error( "webpsave", "%s", _( "invalid configuration" ) );
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return( -1 );
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}
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return( 0 );
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}
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static int
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vips_foreign_save_webp_init_anim_enc( VipsForeignSaveWebp *webp ) {
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WebPAnimEncoderOptions anim_config;
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int i;
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int page_height = vips_image_get_page_height( webp->image );
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|
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/* Init config for animated write
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*/
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if( !WebPAnimEncoderOptionsInit( &anim_config ) ) {
|
|
vips_error( "webpsave",
|
|
"%s", _( "config version error" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
anim_config.minimize_size = webp->min_size;
|
|
anim_config.allow_mixed = webp->mixed;
|
|
anim_config.kmin = webp->kmin;
|
|
anim_config.kmax = webp->kmax;
|
|
webp->enc = WebPAnimEncoderNew( webp->image->Xsize, page_height,
|
|
&anim_config );
|
|
if( !webp->enc ) {
|
|
vips_error( "webpsave",
|
|
"%s", _( "unable to init animation" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
/* Get delay array
|
|
*
|
|
* There might just be the old gif-delay field. This is centiseconds.
|
|
*/
|
|
webp->gif_delay = 10;
|
|
if( vips_image_get_typeof( webp->image, "gif-delay" ) &&
|
|
vips_image_get_int( webp->image, "gif-delay",
|
|
&webp->gif_delay ) )
|
|
return( -1 );
|
|
|
|
/* New images have an array of ints instead.
|
|
*/
|
|
webp->delay = NULL;
|
|
if( vips_image_get_typeof( webp->image, "delay" ) &&
|
|
vips_image_get_array_int( webp->image, "delay",
|
|
&webp->delay, &webp->delay_length ) )
|
|
return( -1 );
|
|
|
|
/* Force frames with a small or no duration to 100ms
|
|
* to be consistent with web browsers and other
|
|
* transcoding tools.
|
|
*/
|
|
if( webp->gif_delay <= 1 )
|
|
webp->gif_delay = 10;
|
|
|
|
for( i = 0; i < webp->delay_length; i++ )
|
|
if( webp->delay[i] <= 10 )
|
|
webp->delay[i] = 100;
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
static int
|
|
vips_foreign_save_webp_finish_anim( VipsForeignSaveWebp *webp ) {
|
|
WebPData webp_data;
|
|
|
|
/* Closes animated encoder and adds last frame delay.
|
|
*/
|
|
if( !WebPAnimEncoderAdd( webp->enc,
|
|
NULL, webp->timestamp_ms, NULL ) ) {
|
|
vips_error( "webpsave",
|
|
"%s", _( "anim close error" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
if( !WebPAnimEncoderAssemble( webp->enc, &webp_data ) ) {
|
|
vips_error( "webpsave",
|
|
"%s", _( "anim build error" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
/* Terrible. This will only work if the output buffer is currently
|
|
* empty.
|
|
*/
|
|
if( webp->memory_writer.mem != NULL ) {
|
|
vips_error( "webpsave", "%s", _( "internal error" ) );
|
|
return( -1 );
|
|
}
|
|
|
|
webp->memory_writer.mem = (uint8_t *) webp_data.bytes;
|
|
webp->memory_writer.size = webp_data.size;
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
static int
|
|
vips_foreign_save_webp_build( VipsObject *object )
|
|
{
|
|
VipsForeignSave *save = (VipsForeignSave *) object;
|
|
VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
|
|
|
|
int page_height;
|
|
|
|
if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_parent_class )->
|
|
build( object ) )
|
|
return( -1 );
|
|
|
|
page_height = vips_image_get_page_height( save->ready );
|
|
if( save->ready->Xsize > 16383 || page_height > 16383 ) {
|
|
vips_error( "webpsave", _( "image too large" ) );
|
|
vips_foreign_save_webp_unset( webp );
|
|
return( -1 );
|
|
}
|
|
|
|
/* We need a copy of the input image in case we change the metadata
|
|
* eg. in vips__exif_update().
|
|
*/
|
|
if( vips_copy( save->ready, &webp->image, NULL ) ) {
|
|
vips_foreign_save_webp_unset( webp );
|
|
return( -1 );
|
|
}
|
|
|
|
/* RGB(A) frame as a contiguous buffer.
|
|
*/
|
|
size_t frame_size = (size_t) webp->image->Bands * webp->image->Xsize * page_height;
|
|
webp->frame_bytes = g_try_malloc( frame_size );
|
|
if( webp->frame_bytes == NULL ) {
|
|
vips_error( "webpsave", _( "failed to allocate %zu bytes" ), frame_size );
|
|
vips_foreign_save_webp_unset( webp );
|
|
return( -1 );
|
|
}
|
|
|
|
/* Init generic WebP config
|
|
*/
|
|
if( vips_foreign_save_webp_init_config( webp ) )
|
|
return( -1 );
|
|
|
|
/* Determine the write mode (single image or animated write)
|
|
*/
|
|
webp->mode = VIPS_FOREIGN_SAVE_WEBP_MODE_SINGLE;
|
|
if( page_height != webp->image->Ysize )
|
|
webp->mode = VIPS_FOREIGN_SAVE_WEBP_MODE_ANIM;
|
|
|
|
/* Init config for animated write (if necessary)
|
|
*/
|
|
if( webp->mode == VIPS_FOREIGN_SAVE_WEBP_MODE_ANIM )
|
|
if( vips_foreign_save_webp_init_anim_enc( webp ) )
|
|
return( -1 );
|
|
|
|
if( vips_sink_disc( webp->image,
|
|
vips_foreign_save_webp_sink_disc, webp ) )
|
|
return( -1 );
|
|
|
|
/* Finish animated write
|
|
*/
|
|
if( webp->mode == VIPS_FOREIGN_SAVE_WEBP_MODE_ANIM )
|
|
if( vips_foreign_save_webp_finish_anim( webp ) )
|
|
return( -1 );
|
|
|
|
if( vips_webp_add_metadata( webp ) ) {
|
|
vips_foreign_save_webp_unset( webp );
|
|
return( -1 );
|
|
}
|
|
|
|
if( vips_target_write( webp->target,
|
|
webp->memory_writer.mem, webp->memory_writer.size ) ) {
|
|
vips_foreign_save_webp_unset( webp );
|
|
return( -1 );
|
|
}
|
|
|
|
if( vips_target_end( webp->target ) )
|
|
return( -1 );
|
|
|
|
vips_foreign_save_webp_unset( webp );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
static const char *vips__save_webp_suffs[] = { ".webp", NULL };
|
|
|
|
#define UC VIPS_FORMAT_UCHAR
|
|
|
|
/* Type promotion for save ... just always go to uchar.
|
|
*/
|
|
static VipsBandFormat bandfmt_webp[10] = {
|
|
/* Band format: UC C US S UI I F X D DX */
|
|
/* Promotion: */ UC, UC, UC, UC, UC, UC, UC, UC, UC, UC
|
|
};
|
|
|
|
static void
|
|
vips_foreign_save_webp_class_init( VipsForeignSaveWebpClass *class )
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
|
|
VipsObjectClass *object_class = (VipsObjectClass *) class;
|
|
VipsForeignClass *foreign_class = (VipsForeignClass *) class;
|
|
VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;
|
|
|
|
gobject_class->dispose = vips_foreign_save_webp_dispose;
|
|
gobject_class->set_property = vips_object_set_property;
|
|
gobject_class->get_property = vips_object_get_property;
|
|
|
|
object_class->nickname = "webpsave_base";
|
|
object_class->description = _( "save as WebP" );
|
|
object_class->build = vips_foreign_save_webp_build;
|
|
|
|
foreign_class->suffs = vips__save_webp_suffs;
|
|
|
|
save_class->saveable = VIPS_SAVEABLE_RGBA_ONLY;
|
|
save_class->format_table = bandfmt_webp;
|
|
|
|
VIPS_ARG_INT( class, "Q", 10,
|
|
_( "Q" ),
|
|
_( "Q factor" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, Q ),
|
|
0, 100, 75 );
|
|
|
|
VIPS_ARG_BOOL( class, "lossless", 11,
|
|
_( "Lossless" ),
|
|
_( "Enable lossless compression" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, lossless ),
|
|
FALSE );
|
|
|
|
VIPS_ARG_ENUM( class, "preset", 12,
|
|
_( "Preset" ),
|
|
_( "Preset for lossy compression" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, preset ),
|
|
VIPS_TYPE_FOREIGN_WEBP_PRESET,
|
|
VIPS_FOREIGN_WEBP_PRESET_DEFAULT );
|
|
|
|
VIPS_ARG_BOOL( class, "smart_subsample", 13,
|
|
_( "Smart subsampling" ),
|
|
_( "Enable high quality chroma subsampling" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, smart_subsample ),
|
|
FALSE );
|
|
|
|
VIPS_ARG_BOOL( class, "near_lossless", 14,
|
|
_( "Near lossless" ),
|
|
_( "Enable preprocessing in lossless mode (uses Q)" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, near_lossless ),
|
|
FALSE );
|
|
|
|
VIPS_ARG_INT( class, "alpha_q", 15,
|
|
_( "Alpha quality" ),
|
|
_( "Change alpha plane fidelity for lossy compression" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, alpha_q ),
|
|
0, 100, 100 );
|
|
|
|
VIPS_ARG_BOOL( class, "min_size", 16,
|
|
_( "Minimise size" ),
|
|
_( "Optimise for minimum size" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, min_size ),
|
|
FALSE );
|
|
|
|
VIPS_ARG_INT( class, "kmin", 17,
|
|
_( "Minimum keyframe spacing" ),
|
|
_( "Minimum number of frames between key frames" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, kmin ),
|
|
0, INT_MAX, INT_MAX - 1 );
|
|
|
|
VIPS_ARG_INT( class, "kmax", 18,
|
|
_( "Maximum keyframe spacing" ),
|
|
_( "Maximum number of frames between key frames" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, kmax ),
|
|
0, INT_MAX, INT_MAX );
|
|
|
|
VIPS_ARG_INT( class, "effort", 19,
|
|
_( "Effort" ),
|
|
_( "Level of CPU effort to reduce file size" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, effort ),
|
|
0, 6, 4 );
|
|
|
|
VIPS_ARG_STRING( class, "profile", 20,
|
|
_( "Profile" ),
|
|
_( "ICC profile to embed" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, profile ),
|
|
NULL );
|
|
|
|
VIPS_ARG_INT( class, "reduction_effort", 21,
|
|
_( "Reduction effort" ),
|
|
_( "Level of CPU effort to reduce file size" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT | VIPS_ARGUMENT_DEPRECATED,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, effort ),
|
|
0, 6, 4 );
|
|
|
|
VIPS_ARG_BOOL( class, "mixed", 22,
|
|
_( "Mixed encoding" ),
|
|
_( "Allow mixed encoding (might reduce file size)" ),
|
|
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebp, mixed ),
|
|
FALSE );
|
|
}
|
|
|
|
static void
|
|
vips_foreign_save_webp_init( VipsForeignSaveWebp *webp )
|
|
{
|
|
webp->Q = 75;
|
|
webp->alpha_q = 100;
|
|
webp->effort = 4;
|
|
|
|
/* ie. keyframes disabled by default.
|
|
*/
|
|
webp->kmin = INT_MAX - 1;
|
|
webp->kmax = INT_MAX;
|
|
}
|
|
|
|
typedef struct _VipsForeignSaveWebpTarget {
|
|
VipsForeignSaveWebp parent_object;
|
|
|
|
VipsTarget *target;
|
|
} VipsForeignSaveWebpTarget;
|
|
|
|
typedef VipsForeignSaveWebpClass VipsForeignSaveWebpTargetClass;
|
|
|
|
G_DEFINE_TYPE( VipsForeignSaveWebpTarget, vips_foreign_save_webp_target,
|
|
vips_foreign_save_webp_get_type() );
|
|
|
|
static int
|
|
vips_foreign_save_webp_target_build( VipsObject *object )
|
|
{
|
|
VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
|
|
VipsForeignSaveWebpTarget *target =
|
|
(VipsForeignSaveWebpTarget *) object;
|
|
|
|
webp->target = target->target;
|
|
g_object_ref( webp->target );
|
|
|
|
if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_target_parent_class )->
|
|
build( object ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
static void
|
|
vips_foreign_save_webp_target_class_init(
|
|
VipsForeignSaveWebpTargetClass *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_target";
|
|
object_class->build = vips_foreign_save_webp_target_build;
|
|
|
|
VIPS_ARG_OBJECT( class, "target", 1,
|
|
_( "Target" ),
|
|
_( "Target to save to" ),
|
|
VIPS_ARGUMENT_REQUIRED_INPUT,
|
|
G_STRUCT_OFFSET( VipsForeignSaveWebpTarget, target ),
|
|
VIPS_TYPE_TARGET );
|
|
|
|
}
|
|
|
|
static void
|
|
vips_foreign_save_webp_target_init( VipsForeignSaveWebpTarget *target )
|
|
{
|
|
}
|
|
|
|
typedef struct _VipsForeignSaveWebpFile {
|
|
VipsForeignSaveWebp parent_object;
|
|
char *filename;
|
|
} VipsForeignSaveWebpFile;
|
|
|
|
typedef VipsForeignSaveWebpClass VipsForeignSaveWebpFileClass;
|
|
|
|
G_DEFINE_TYPE( VipsForeignSaveWebpFile, vips_foreign_save_webp_file,
|
|
vips_foreign_save_webp_get_type() );
|
|
|
|
static int
|
|
vips_foreign_save_webp_file_build( VipsObject *object )
|
|
{
|
|
VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
|
|
VipsForeignSaveWebpFile *file = (VipsForeignSaveWebpFile *) object;
|
|
|
|
if( !(webp->target = vips_target_new_to_file( file->filename )) )
|
|
return( -1 );
|
|
|
|
if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_file_parent_class )->
|
|
build( object ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
static void
|
|
vips_foreign_save_webp_file_class_init( VipsForeignSaveWebpFileClass *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";
|
|
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;
|
|
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 )
|
|
{
|
|
VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
|
|
VipsForeignSaveWebpBuffer *buffer =
|
|
(VipsForeignSaveWebpBuffer *) object;
|
|
|
|
VipsBlob *blob;
|
|
|
|
if( !(webp->target = vips_target_new_to_memory()) )
|
|
return( -1 );
|
|
|
|
if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_buffer_parent_class )->
|
|
build( object ) )
|
|
return( -1 );
|
|
|
|
g_object_get( webp->target, "blob", &blob, NULL );
|
|
g_object_set( buffer, "buffer", blob, NULL );
|
|
vips_area_unref( VIPS_AREA( blob ) );
|
|
|
|
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->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 *buffer )
|
|
{
|
|
}
|
|
|
|
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 )
|
|
{
|
|
VipsForeignSaveWebp *webp = (VipsForeignSaveWebp *) object;
|
|
|
|
VipsBlob *blob;
|
|
void *data;
|
|
size_t len;
|
|
|
|
if( !(webp->target = vips_target_new_to_memory()) )
|
|
return( -1 );
|
|
|
|
if( VIPS_OBJECT_CLASS( vips_foreign_save_webp_mime_parent_class )->
|
|
build( object ) )
|
|
return( -1 );
|
|
|
|
g_object_get( webp->target, "blob", &blob, NULL );
|
|
data = VIPS_AREA( blob )->data;
|
|
len = VIPS_AREA( blob )->length;
|
|
vips_area_unref( VIPS_AREA( blob ) );
|
|
|
|
printf( "Content-length: %zu\r\n", len );
|
|
printf( "Content-type: image/webp\r\n" );
|
|
printf( "\r\n" );
|
|
(void) fwrite( data, sizeof( char ), len, stdout );
|
|
fflush( stdout );
|
|
|
|
VIPS_UNREF( webp->target );
|
|
|
|
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*/
|
|
|
|
/**
|
|
* vips_webpsave: (method)
|
|
* @in: image to save
|
|
* @filename: file to write to
|
|
* @...: %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
|
|
* * @effort: %gint, level of CPU effort to reduce file size
|
|
* * @min_size: %gboolean, minimise size
|
|
* * @mixed: %gboolean, allow both lossy and lossless encoding
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
|
* * @strip: %gboolean, remove all metadata from image
|
|
* * @profile: %gchararray, filename of ICC profile to attach
|
|
*
|
|
* 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.
|
|
*
|
|
* Set @smart_subsample to enable high quality chroma subsampling.
|
|
*
|
|
* Use @alpha_q to set the quality for the alpha channel in lossy mode. It has
|
|
* the range 1 - 100, with the default 100.
|
|
*
|
|
* Use @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.
|
|
*
|
|
* 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%.
|
|
*
|
|
* For animated webp output, @min_size will try to optimize for minimum size.
|
|
*
|
|
* 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.
|
|
*
|
|
* For animated webp output, @mixed tries to improve the file size by mixing
|
|
* both lossy and lossless encoding.
|
|
*
|
|
* Use @profile to give the name of a profile to be embedded in the file.
|
|
* This does not affect the pixels which are written, just the way
|
|
* they are tagged. See vips_profile_load() for details on profile naming.
|
|
*
|
|
* Use the metadata items `loop` and `delay` to set the number of
|
|
* loops for the animation and the frame delays.
|
|
*
|
|
* The writer will attach ICC, EXIF and XMP metadata, unless @strip is set to
|
|
* %TRUE.
|
|
*
|
|
* 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 );
|
|
}
|
|
|
|
/**
|
|
* vips_webpsave_buffer: (method)
|
|
* @in: image to save
|
|
* @buf: (out) (array length=len) (element-type guint8): return output buffer here
|
|
* @len: return output length here
|
|
* @...: %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
|
|
* * @effort: %gint, level of CPU effort to reduce file size
|
|
* * @min_size: %gboolean, minimise size
|
|
* * @mixed: %gboolean, allow both lossy and lossless encoding
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
|
* * @strip: %gboolean, remove all metadata from image
|
|
* * @profile: %gchararray, filename of ICC profile to attach
|
|
*
|
|
* 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 );
|
|
}
|
|
|
|
/**
|
|
* vips_webpsave_mime: (method)
|
|
* @in: image to save
|
|
* @...: %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
|
|
* * @effort: %gint, level of CPU effort to reduce file size
|
|
* * @min_size: %gboolean, minimise size
|
|
* * @mixed: %gboolean, allow both lossy and lossless encoding
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
|
* * @strip: %gboolean, remove all metadata from image
|
|
* * @profile: %gchararray, filename of ICC profile to attach
|
|
*
|
|
* 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 );
|
|
}
|
|
|
|
/**
|
|
* vips_webpsave_target: (method)
|
|
* @in: image to save
|
|
* @target: save image to this target
|
|
* @...: %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
|
|
* * @effort: %gint, level of CPU effort to reduce file size
|
|
* * @min_size: %gboolean, minimise size
|
|
* * @mixed: %gboolean, allow both lossy and lossless encoding
|
|
* * @kmin: %gint, minimum number of frames between keyframes
|
|
* * @kmax: %gint, maximum number of frames between keyframes
|
|
* * @strip: %gboolean, remove all metadata from image
|
|
* * @profile: %gchararray, filename of ICC profile to attach
|
|
*
|
|
* As vips_webpsave(), but save to a target.
|
|
*
|
|
* See also: vips_webpsave().
|
|
*
|
|
* Returns: 0 on success, -1 on error.
|
|
*/
|
|
int
|
|
vips_webpsave_target( VipsImage *in, VipsTarget *target, ... )
|
|
{
|
|
va_list ap;
|
|
int result;
|
|
|
|
va_start( ap, target );
|
|
result = vips_call_split( "webpsave_target", ap, in, target );
|
|
va_end( ap );
|
|
|
|
return( result );
|
|
}
|