/*
   (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 "CorePalette.h"

extern "C" {
#include <directfb_util.h>

#include <direct/debug.h>
#include <direct/mem.h>
#include <direct/memcpy.h>
#include <direct/messages.h>

#include <core/core.h>

#include <gfx/convert.h>
}

D_DEBUG_DOMAIN( DirectFB_CorePalette, "DirectFB/CorePalette", "DirectFB CorePalette" );

/*********************************************************************************************************************/

namespace DirectFB {



DFBResult
IPalette_Real::SetEntries(
                        const DFBColor *colors,
                        u32             num,
                        u32             offset
                        )
{
     D_DEBUG_AT( DirectFB_CorePalette, "IPalette_Real::%s()\n", __FUNCTION__ );

     D_ASSERT( colors != NULL );

     if (offset + num > obj->num_entries)
          return DFB_INVARG;

     if (num) {
          direct_memcpy( obj->entries + offset, colors, num * sizeof(DFBColor));

          for (u32 i=offset; i<offset+num; i++) {
               obj->entries_yuv[i].a = obj->entries[i].a;

               RGB_TO_YCBCR( obj->entries[i].r, obj->entries[i].g, obj->entries[i].b,
                             obj->entries_yuv[i].y, obj->entries_yuv[i].u, obj->entries_yuv[i].v );
          }

          dfb_palette_update( obj, offset, offset + num - 1 );
     }

     return DFB_OK;
}

DFBResult
IPalette_Real::SetEntriesYUV(
                        const DFBColorYUV *colors,
                        u32                num,
                        u32                offset
                        )
{
     D_DEBUG_AT( DirectFB_CorePalette, "IPalette_Real::%s()\n", __FUNCTION__ );

     D_ASSERT( colors != NULL );

     if (offset + num > obj->num_entries)
          return DFB_INVARG;

     if (num) {
          direct_memcpy( obj->entries_yuv + offset, colors, num * sizeof(DFBColorYUV));

          for (u32 i=offset; i<offset+num; i++) {
               obj->entries[i].a = obj->entries_yuv[i].a;

               YCBCR_TO_RGB( obj->entries_yuv[i].y, obj->entries_yuv[i].u, obj->entries_yuv[i].v,
                             obj->entries[i].r, obj->entries[i].g, obj->entries[i].b );
          }

          dfb_palette_update( obj, offset, offset + num - 1 );
     }

     return DFB_OK;
}


}

