/*
   (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;
}