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Diffstat (limited to 'Source/DirectFB/lib/direct/fastlz.c')
-rwxr-xr-x | Source/DirectFB/lib/direct/fastlz.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/Source/DirectFB/lib/direct/fastlz.c b/Source/DirectFB/lib/direct/fastlz.c new file mode 100755 index 0000000..60bf3ca --- /dev/null +++ b/Source/DirectFB/lib/direct/fastlz.c @@ -0,0 +1,97 @@ +/* + (c) Copyright 2001-2011 The world wide DirectFB Open Source Community (directfb.org) + (c) Copyright 2000-2004 Convergence (integrated media) GmbH + + All rights reserved. + + Written by Denis Oliver Kropp <dok@directfb.org>, + Andreas Hundt <andi@fischlustig.de>, + Sven Neumann <neo@directfb.org>, + Ville Syrjälä <syrjala@sci.fi> and + Claudio Ciccani <klan@users.sf.net>. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#include <config.h> + +#include <stdlib.h> +#include <string.h> + +#include <direct/fastlz.h> +#include <direct/messages.h> + +#include "flz.h" + + +int +direct_fastlz_compress( const void *input, + int length, + void *output ) +{ + return fastlz_compress_level( 2, input, length, output ); +} + +int +direct_fastlz_decompress( const void *input, + int length, + void *output, + int maxout ) +{ + return fastlz_decompress( input, length, output, maxout ); +} + +int +direct_fastlz_compress_multi( const void **inputs, + int *lengths, + unsigned int num, + void *output ) +{ + // FIXME: Optimize by modifying fastlz compressor to take an array of buffers directly + + unsigned int i; + int total = 0; + int offset = 0; + void *buffer; + int result; + + if (num == 0) + return 0; + + if (num == 1) + return direct_fastlz_compress( inputs[0], lengths[0], output ); + + for (i=0; i<num; i++) + total += lengths[i]; + + buffer = malloc( total ); + if (!buffer) { + D_OOM(); + return 0; + } + + for (i=0; i<num; i++) { + memcpy( (char*) buffer + offset, inputs[i], lengths[i] ); + + offset += lengths[i]; + } + + result = direct_fastlz_compress( buffer, total, output ); + + free( buffer ); + + return result; +} |