43 lines
958 B
C++
43 lines
958 B
C++
/*
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* compile with:
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*
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* g++ -g -Wall buffer.cpp `pkg-config vips-cpp --cflags --libs`
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*
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*/
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#define DEBUG
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#include <vips/vips8>
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using namespace vips;
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int
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main( int argc, char **argv )
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{
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if( VIPS_INIT( argv[0] ) )
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vips_error_exit( NULL );
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// load an image from a file
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VImage im = VImage::new_from_file( argv[1],
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VImage::option()->set( "access", "sequential" ) );
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printf( "loaded %d x %d pixel image from %s\n",
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im.width(), im.height(), argv[1] );
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// write to a formatted memory buffer
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size_t size;
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void *buf;
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im.write_to_buffer( ".png", &buf, &size );
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printf( "written to memory %p in png format, %zu bytes\n", buf, size );
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// load from the formatted memory area
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im = VImage::new_from_buffer( buf, size, "" );
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printf( "loaded from memory, %d x %d pixel image\n",
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im.width(), im.height() );
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// write back to a file
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im.write_to_file( argv[2] );
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printf( "written back to %s\n", argv[2] );
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return( 0 );
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}
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