/*
   (c) Copyright 2000-2002  convergence integrated media GmbH.
   (c) Copyright 2002       convergence GmbH.
   
   All rights reserved.

   Written by Denis Oliver Kropp <dok@directfb.org>,
              Andreas Hundt <andi@fischlustig.de> and
              Sven Neumann <sven@convergence.de>.

   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 <directfb.h>

#include <core/core.h>
#include <core/coredefs.h>

#include "misc/memcpy.h"

#include "convert.h"


DFBSurfacePixelFormat
dfb_pixelformat_for_depth( int depth )
{
     switch (depth) {
          case 8:
               return DSPF_LUT8;
          case 15:
               return DSPF_ARGB1555;
          case 16:
               return DSPF_RGB16;
          case 24:
               return DSPF_RGB24;
          case 32:
               return DSPF_RGB32;
     }

     return DSPF_UNKNOWN;
}

__u32
dfb_color_to_pixel( DFBSurfacePixelFormat format,
                    __u8 r, __u8 g, __u8 b )
{
     __u32 pixel;

     switch (format) {
#ifdef SUPPORT_RGB332
          case DSPF_RGB332:
               pixel = PIXEL_RGB332( r, g, b );
               break;
#endif
          case DSPF_ARGB1555:
               pixel = PIXEL_RGB15( r, g, b );
               break;
          case DSPF_RGB16:
               pixel = PIXEL_RGB16( r, g, b );
               break;
          case DSPF_RGB24:
          case DSPF_RGB32:
          case DSPF_ARGB:
               pixel = PIXEL_RGB24( r, g, b );
               break;
          default:
               pixel = 0;
     }

     return pixel;
}


/* Totally unused yet, not even declared */

#if 0

void dfb_convert_buffer( void                 *src,
                         void                 *dst,
                         int                   width,
                         int                   height,
                         int                   src_pitch,
                         int                   dst_pitch,
                         DFBSurfacePixelFormat src_format,
                         DFBSurfacePixelFormat dst_format )
{
     switch (src_format) {
          case DSPF_RGB15:
               switch (dst_format) {
                    case DSPF_RGB15:
                         while (height--) {
                              dfb_memcpy( dst, src, width*2 );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB16:
                         while (height--) {
                              span_rgb15_to_rgb16( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB32:
                         while (height--) {
                              span_rgb15_to_rgb32( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_ARGB:
                         while (height--) {
                              span_rgb15_to_argb( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    default:
                         ERRORMSG( "DirectFB/gfx: unimplemented conversion!\n");
                         break;
               }
               break;
          case DSPF_RGB16:
               switch (dst_format) {
                    case DSPF_RGB15:
                         while (height--) {
                              span_rgb16_to_rgb15( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB16:
                         while (height--) {
                              dfb_memcpy( dst, src, width*2 );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB32:
                         while (height--) {
                              span_rgb16_to_rgb32( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_ARGB:
                         while (height--) {
                              span_rgb16_to_argb( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    default:
                         ERRORMSG( "DirectFB/gfx: unimplemented conversion!\n");
                         break;
               }
               break;
          case DSPF_RGB32:
               switch (dst_format) {
                    case DSPF_RGB15:
                         while (height--) {
                              span_rgb32_to_rgb15( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB16:
                         while (height--) {
                              span_rgb32_to_rgb16( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB32:
                         while (height--) {
                              dfb_memcpy( dst, src, width*4 );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_ARGB:
                         while (height--) {
                              span_rgb32_to_argb( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    default:
                         ERRORMSG( "DirectFB/gfx: unimplemented conversion!\n");
                         break;
               }
               break;
          case DSPF_ARGB:
               switch (dst_format) {
                    case DSPF_RGB15:
                         while (height--) {
                              span_rgb32_to_rgb15( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB16:
                         while (height--) {
                              span_rgb32_to_rgb16( src, dst, width );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    case DSPF_RGB32:
                    case DSPF_ARGB:
                         while (height--) {
                              dfb_memcpy( dst, src, width*4 );
                              ((__u8*)src) += src_pitch;
                              ((__u8*)dst) += dst_pitch;
                         }
                         break;
                    default:
                         ERRORMSG( "DirectFB/gfx: unimplemented conversion!\n");
                         break;
               }
               break;
          default:
               ERRORMSG( "DirectFB/gfx: unimplemented conversion!\n");
               break;
     }
}

#endif