346 lines
8.6 KiB
C
346 lines
8.6 KiB
C
/* save to jpeg
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*
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* 24/11/11
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* - wrap a class around the jpeg writer
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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_JPEG
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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 <setjmp.h>
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#ifdef HAVE_EXIF
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#ifdef UNTAGGED_EXIF
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#include <exif-data.h>
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#include <exif-loader.h>
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#include <exif-ifd.h>
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#include <exif-utils.h>
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#else /*!UNTAGGED_EXIF*/
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#include <libexif/exif-data.h>
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#include <libexif/exif-loader.h>
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#include <libexif/exif-ifd.h>
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#include <libexif/exif-utils.h>
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#endif /*UNTAGGED_EXIF*/
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#endif /*HAVE_EXIF*/
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#include <vips/vips.h>
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#include <vips/buf.h>
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#include <vips/internal.h>
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#include "vipsjpeg.h"
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typedef struct _VipsForeignSaveJpeg {
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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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/* Profile to embed .. "none" means don't attach a profile.
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*/
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char *profile;
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/* Compute optimal Huffman coding tables.
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*/
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gboolean optimize_coding;
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/* Generate an interlaced (progressive, in jpg terminology) file.
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*/
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gboolean interlace;
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} VipsForeignSaveJpeg;
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typedef VipsForeignSaveClass VipsForeignSaveJpegClass;
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G_DEFINE_ABSTRACT_TYPE( VipsForeignSaveJpeg, vips_foreign_save_jpeg,
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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_jpeg[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_jpeg_class_init( VipsForeignSaveJpegClass *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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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 = "jpegsave_base";
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object_class->description = _( "save jpeg" );
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save_class->saveable = VIPS_SAVEABLE_RGB_CMYK;
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save_class->format_table = bandfmt_jpeg;
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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( VipsForeignSaveJpeg, Q ),
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1, 100, 75 );
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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( VipsForeignSaveJpeg, profile ),
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NULL );
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VIPS_ARG_BOOL( class, "optimize_coding", 12,
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_( "optimize_coding" ),
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_( "Compute optimal Huffman coding tables" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveJpeg, optimize_coding ),
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FALSE );
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VIPS_ARG_BOOL( class, "interlace", 13,
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_( "interlace" ),
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_( "Generate an interlaced (progressive) jpeg" ),
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VIPS_ARGUMENT_OPTIONAL_INPUT,
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G_STRUCT_OFFSET( VipsForeignSaveJpeg, interlace ),
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FALSE );
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}
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static void
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vips_foreign_save_jpeg_init( VipsForeignSaveJpeg *jpeg )
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{
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jpeg->Q = 75;
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}
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typedef struct _VipsForeignSaveJpegFile {
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VipsForeignSaveJpeg parent_object;
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/* Filename for save.
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*/
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char *filename;
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} VipsForeignSaveJpegFile;
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typedef VipsForeignSaveJpegClass VipsForeignSaveJpegFileClass;
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G_DEFINE_TYPE( VipsForeignSaveJpegFile, vips_foreign_save_jpeg_file,
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vips_foreign_save_jpeg_get_type() );
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static int
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vips_foreign_save_jpeg_file_build( VipsObject *object )
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{
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VipsForeignSave *save = (VipsForeignSave *) object;
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VipsForeignSaveJpeg *jpeg = (VipsForeignSaveJpeg *) object;
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VipsForeignSaveJpegFile *file = (VipsForeignSaveJpegFile *) object;
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if( VIPS_OBJECT_CLASS( vips_foreign_save_jpeg_file_parent_class )->
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build( object ) )
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return( -1 );
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if( vips__jpeg_write_file( save->ready, file->filename,
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jpeg->Q, jpeg->profile, jpeg->optimize_coding,
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jpeg->interlace ) )
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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_jpeg_file_class_init( VipsForeignSaveJpegFileClass *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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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 = "jpegsave";
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object_class->description = _( "save image to jpeg file" );
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object_class->build = vips_foreign_save_jpeg_file_build;
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foreign_class->suffs = vips__jpeg_suffs;
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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( VipsForeignSaveJpegFile, filename ),
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NULL );
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}
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static void
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vips_foreign_save_jpeg_file_init( VipsForeignSaveJpegFile *file )
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{
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}
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typedef struct _VipsForeignSaveJpegBuffer {
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VipsForeignSaveJpeg parent_object;
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/* Save to a buffer.
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*/
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VipsArea *buf;
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} VipsForeignSaveJpegBuffer;
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typedef VipsForeignSaveJpegClass VipsForeignSaveJpegBufferClass;
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G_DEFINE_TYPE( VipsForeignSaveJpegBuffer, vips_foreign_save_jpeg_buffer,
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vips_foreign_save_jpeg_get_type() );
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static int
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vips_foreign_save_jpeg_buffer_build( VipsObject *object )
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{
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VipsForeignSave *save = (VipsForeignSave *) object;
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VipsForeignSaveJpeg *jpeg = (VipsForeignSaveJpeg *) object;
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VipsForeignSaveJpegBuffer *file = (VipsForeignSaveJpegBuffer *) 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_jpeg_buffer_parent_class )->
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build( object ) )
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return( -1 );
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if( vips__jpeg_write_buffer( save->ready,
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&obuf, &olen, jpeg->Q, jpeg->profile, jpeg->optimize_coding,
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jpeg->interlace ) )
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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( file, "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_jpeg_buffer_class_init(
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VipsForeignSaveJpegBufferClass *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 = "jpegsave_buffer";
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object_class->description = _( "save image to jpeg buffer" );
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object_class->build = vips_foreign_save_jpeg_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( VipsForeignSaveJpegBuffer, 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_jpeg_buffer_init( VipsForeignSaveJpegBuffer *file )
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{
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}
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typedef struct _VipsForeignSaveJpegMime {
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VipsForeignSaveJpeg parent_object;
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} VipsForeignSaveJpegMime;
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typedef VipsForeignSaveJpegClass VipsForeignSaveJpegMimeClass;
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G_DEFINE_TYPE( VipsForeignSaveJpegMime, vips_foreign_save_jpeg_mime,
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vips_foreign_save_jpeg_get_type() );
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static int
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vips_foreign_save_jpeg_mime_build( VipsObject *object )
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{
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VipsForeignSave *save = (VipsForeignSave *) object;
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VipsForeignSaveJpeg *jpeg = (VipsForeignSaveJpeg *) object;
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void *obuf;
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size_t olen;
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if( VIPS_OBJECT_CLASS( vips_foreign_save_jpeg_mime_parent_class )->
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build( object ) )
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return( -1 );
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if( vips__jpeg_write_buffer( save->ready,
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&obuf, &olen, jpeg->Q, jpeg->profile, jpeg->optimize_coding,
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jpeg->interlace ) )
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return( -1 );
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printf( "Content-length: %zd\r\n", olen );
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printf( "Content-type: image/jpeg\r\n" );
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printf( "\r\n" );
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if( fwrite( obuf, sizeof( char ), olen, stdout ) != olen ) {
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vips_error( "VipsJpeg", "%s", _( "error writing output" ) );
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return( -1 );
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}
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fflush( stdout );
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g_free( obuf );
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return( 0 );
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}
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static void
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vips_foreign_save_jpeg_mime_class_init( VipsForeignSaveJpegMimeClass *class )
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{
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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object_class->nickname = "jpegsave_mime";
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object_class->description = _( "save image to jpeg mime" );
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object_class->build = vips_foreign_save_jpeg_mime_build;
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}
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static void
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vips_foreign_save_jpeg_mime_init( VipsForeignSaveJpegMime *mime )
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{
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}
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#endif /*HAVE_JPEG*/
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