255 lines
6.4 KiB
C
255 lines
6.4 KiB
C
/* save to png
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*
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* 2/12/11
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* - wrap a class around the png writer
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* 16/7/12
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* - compression should be 0-9, not 1-10
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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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#ifdef HAVE_PNG
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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 "vipspng.h"
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typedef struct _VipsForeignSavePng {
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VipsForeignSave parent_object;
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int compression;
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gboolean interlace;
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char *profile;
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} VipsForeignSavePng;
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typedef VipsForeignSaveClass VipsForeignSavePngClass;
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G_DEFINE_ABSTRACT_TYPE( VipsForeignSavePng, vips_foreign_save_png,
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VIPS_TYPE_FOREIGN_SAVE );
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/* Save a bit of typing.
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*/
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#define UC VIPS_FORMAT_UCHAR
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#define C VIPS_FORMAT_CHAR
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#define US VIPS_FORMAT_USHORT
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#define S VIPS_FORMAT_SHORT
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#define UI VIPS_FORMAT_UINT
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#define I VIPS_FORMAT_INT
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#define F VIPS_FORMAT_FLOAT
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#define X VIPS_FORMAT_COMPLEX
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#define D VIPS_FORMAT_DOUBLE
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#define DX VIPS_FORMAT_DPCOMPLEX
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static int bandfmt_png[10] = {
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/* UC C US S UI I F X D DX */
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UC, UC, US, US, US, US, UC, UC, UC, UC
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};
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static void
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vips_foreign_save_png_class_init( VipsForeignSavePngClass *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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VipsForeignClass *foreign_class = (VipsForeignClass *) class;
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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 = "pngsave_base";
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object_class->description = _( "save png" );
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foreign_class->suffs = vips__png_suffs;
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save_class->saveable = VIPS_SAVEABLE_RGBA;
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save_class->format_table = bandfmt_png;
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VIPS_ARG_INT( class, "compression", 6,
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_( "Compression" ),
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_( "Compression factor" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSavePng, compression ),
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0, 9, 6 );
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VIPS_ARG_BOOL( class, "interlace", 7,
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_( "Interlace" ),
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_( "Interlace image" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSavePng, interlace ),
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FALSE );
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VIPS_ARG_STRING( class, "profile", 11,
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_( "Profile" ),
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_( "ICC profile to embed" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSavePng, profile ),
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NULL );
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}
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static void
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vips_foreign_save_png_init( VipsForeignSavePng *png )
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{
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png->compression = 6;
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}
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typedef struct _VipsForeignSavePngFile {
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VipsForeignSavePng parent_object;
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char *filename;
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} VipsForeignSavePngFile;
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typedef VipsForeignSavePngClass VipsForeignSavePngFileClass;
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G_DEFINE_TYPE( VipsForeignSavePngFile, vips_foreign_save_png_file,
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vips_foreign_save_png_get_type() );
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static int
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vips_foreign_save_png_file_build( VipsObject *object )
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{
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VipsForeignSave *save = (VipsForeignSave *) object;
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VipsForeignSavePng *png = (VipsForeignSavePng *) object;
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VipsForeignSavePngFile *png_file = (VipsForeignSavePngFile *) object;
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if( VIPS_OBJECT_CLASS( vips_foreign_save_png_file_parent_class )->
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build( object ) )
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return( -1 );
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if( vips__png_write( save->ready, png_file->filename,
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png->compression, png->interlace, png->profile ) )
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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_png_file_class_init( VipsForeignSavePngFileClass *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 = "pngsave";
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object_class->description = _( "save image to png file" );
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object_class->build = vips_foreign_save_png_file_build;
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VIPS_ARG_STRING( class, "filename", 1,
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_( "Filename" ),
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_( "Filename to save to" ),
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VIPS_ARGUMENT_REQUIRED_INPUT,
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G_STRUCT_OFFSET( VipsForeignSavePngFile, filename ),
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NULL );
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}
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static void
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vips_foreign_save_png_file_init( VipsForeignSavePngFile *file )
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{
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}
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typedef struct _VipsForeignSavePngBuffer {
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VipsForeignSavePng parent_object;
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VipsArea *buf;
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} VipsForeignSavePngBuffer;
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typedef VipsForeignSavePngClass VipsForeignSavePngBufferClass;
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G_DEFINE_TYPE( VipsForeignSavePngBuffer, vips_foreign_save_png_buffer,
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vips_foreign_save_png_get_type() );
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static int
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vips_foreign_save_png_buffer_build( VipsObject *object )
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{
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VipsForeignSave *save = (VipsForeignSave *) object;
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VipsForeignSavePng *png = (VipsForeignSavePng *) object;
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void *obuf;
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size_t olen;
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VipsArea *area;
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if( VIPS_OBJECT_CLASS( vips_foreign_save_png_buffer_parent_class )->
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build( object ) )
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return( -1 );
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if( vips__png_write_buf( save->ready, &obuf, &olen,
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png->compression, png->interlace, png->profile ) )
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return( -1 );
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area = vips_area_new_blob( (VipsCallbackFn) vips_free, obuf, olen );
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g_object_set( object, "buffer", area, NULL );
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vips_area_unref( area );
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return( 0 );
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}
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static void
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vips_foreign_save_png_buffer_class_init( VipsForeignSavePngBufferClass *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 = "pngsave_buffer";
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object_class->description = _( "save image to png buffer" );
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object_class->build = vips_foreign_save_png_buffer_build;
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VIPS_ARG_BOXED( class, "buffer", 1,
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_( "Buffer" ),
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_( "Buffer to save to" ),
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VIPS_ARGUMENT_REQUIRED_OUTPUT,
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G_STRUCT_OFFSET( VipsForeignSavePngBuffer, buf ),
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VIPS_TYPE_BLOB );
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}
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static void
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vips_foreign_save_png_buffer_init( VipsForeignSavePngBuffer *buffer )
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{
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}
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#endif /*HAVE_PNG*/
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