124 lines
2.5 KiB
C
124 lines
2.5 KiB
C
/* wrap libwebp libray for write
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*
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* 6/8/13
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* - from vips2jpeg.c
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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
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#define VIPS_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_LIBWEBP
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#include <stdlib.h>
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#include <vips/vips.h>
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#include <webp/encode.h>
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#include "webp.h"
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typedef size_t (*webp_encoder)( const uint8_t *rgb,
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int width, int height, int stride,
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float quality_factor, uint8_t **output );
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int
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vips__webp_write_file( VipsImage *in, const char *filename, int Q )
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{
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webp_encoder encoder;
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size_t len;
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uint8_t *buffer;
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FILE *fp;
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if( vips_image_wio_input( in ) )
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return( -1 );
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if( in->Bands == 4 )
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encoder = WebPEncodeRGBA;
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else
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encoder = WebPEncodeRGB;
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if( !(len = encoder( VIPS_IMAGE_ADDR( in, 0, 0 ),
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in->Xsize, in->Ysize,
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VIPS_IMAGE_SIZEOF_LINE( in ),
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Q, &buffer )) ) {
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vips_error( "vips2webp", "%s", _( "unable to encode" ) );
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return( -1 );
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}
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if( !(fp = vips__file_open_write( filename, FALSE )) ) {
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free( buffer );
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return( -1 );
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}
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if( vips__file_write( buffer, len, 1, fp ) ) {
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fclose( fp );
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free( buffer );
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return( -1 );
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}
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fclose( fp );
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free( buffer );
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return( 0 );
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}
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int
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vips__webp_write_buffer( VipsImage *in, void **obuf, size_t *olen, int Q )
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{
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webp_encoder encoder;
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if( vips_image_wio_input( in ) )
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return( -1 );
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if( in->Bands == 4 )
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encoder = WebPEncodeRGBA;
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else
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encoder = WebPEncodeRGB;
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if( !(*olen = encoder( VIPS_IMAGE_ADDR( in, 0, 0 ),
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in->Xsize, in->Ysize,
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VIPS_IMAGE_SIZEOF_LINE( in ),
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Q, (uint8_t **) obuf )) ) {
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vips_error( "vips2webp", "%s", _( "unable to encode" ) );
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return( -1 );
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}
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return( 0 );
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}
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#endif /*HAVE_LIBWEBP*/
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