/* $Header: /cvsroot/Insight/Insight/Utilities/tiff/tif_codec.c,v 1.3 2005/11/17 22:11:20 malaterre Exp $ */

/*
 * Copyright (c) 1988-1997 Sam Leffler
 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and 
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Sam Leffler and Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Sam Leffler and Silicon Graphics.
 * 
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
 * 
 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 */

/*
 * TIFF Library
 *
 * Builtin Compression Scheme Configuration Support.
 */
#include "tiffiop.h"

static  int NotConfigured(TIFF*, int);

#ifndef  LZW_SUPPORT
#define  TIFFInitLZW    NotConfigured
#endif
#ifndef  PACKBITS_SUPPORT
#define  TIFFInitPackBits  NotConfigured
#endif
#ifndef  THUNDER_SUPPORT
#define  TIFFInitThunderScan  NotConfigured
#endif
#ifndef  NEXT_SUPPORT
#define  TIFFInitNeXT    NotConfigured
#endif
#ifndef  JPEG_SUPPORT
#define  TIFFInitJPEG    NotConfigured
#endif
#ifndef  OJPEG_SUPPORT
#define  TIFFInitOJPEG    NotConfigured
#endif
#ifndef  CCITT_SUPPORT
#define  TIFFInitCCITTRLE  NotConfigured
#define  TIFFInitCCITTRLEW  NotConfigured
#define  TIFFInitCCITTFax3  NotConfigured
#define  TIFFInitCCITTFax4  NotConfigured
#endif
#ifndef JBIG_SUPPORT
#define  TIFFInitJBIG    NotConfigured
#endif
#ifndef  ZIP_SUPPORT
#define  TIFFInitZIP    NotConfigured
#endif
#ifndef  PIXARLOG_SUPPORT
#define  TIFFInitPixarLog  NotConfigured
#endif
#ifndef LOGLUV_SUPPORT
#define TIFFInitSGILog    NotConfigured
#endif

/*
 * Compression schemes statically built into the library.
 */
#ifdef VMS
const TIFFCodec _TIFFBuiltinCODECS[] = {
#else
TIFFCodec _TIFFBuiltinCODECS[] = {
#endif
    { "None",    COMPRESSION_NONE,  TIFFInitDumpMode },
    { "LZW",    COMPRESSION_LZW,  TIFFInitLZW },
    { "PackBits",  COMPRESSION_PACKBITS,  TIFFInitPackBits },
    { "ThunderScan",  COMPRESSION_THUNDERSCAN,TIFFInitThunderScan },
    { "NeXT",    COMPRESSION_NEXT,  TIFFInitNeXT },
    { "JPEG",    COMPRESSION_JPEG,  TIFFInitJPEG },
    { "Old-style JPEG",  COMPRESSION_OJPEG,  TIFFInitOJPEG },
    { "CCITT RLE",  COMPRESSION_CCITTRLE,  TIFFInitCCITTRLE },
    { "CCITT RLE/W",  COMPRESSION_CCITTRLEW,  TIFFInitCCITTRLEW },
    { "CCITT Group 3",  COMPRESSION_CCITTFAX3,  TIFFInitCCITTFax3 },
    { "CCITT Group 4",  COMPRESSION_CCITTFAX4,  TIFFInitCCITTFax4 },
    { "ISO JBIG",  COMPRESSION_JBIG,  TIFFInitJBIG },
    { "Deflate",  COMPRESSION_DEFLATE,  TIFFInitZIP },
    { "AdobeDeflate",   COMPRESSION_ADOBE_DEFLATE , TIFFInitZIP }, 
    { "PixarLog",  COMPRESSION_PIXARLOG,  TIFFInitPixarLog },
    { "SGILog",    COMPRESSION_SGILOG,  TIFFInitSGILog },
    { "SGILog24",  COMPRESSION_SGILOG24,  TIFFInitSGILog },
    { NULL, 0, 0 }
};

static int
_notConfigured(TIFF* tif)
{
  const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);

  TIFFError(tif->tif_name,
      "%s compression support is not configured", c->name);
  return (0);
}

static int
NotConfigured(TIFF* tif, int scheme)
{
    (void) scheme;
    
    tif->tif_decodestatus = FALSE;
    tif->tif_setupdecode = _notConfigured;
    tif->tif_encodestatus = FALSE;
    tif->tif_setupencode = _notConfigured;
    return (1);
}

/************************************************************************/
/*                       TIFFIsCODECConfigured()                        */
/************************************************************************/

/**
 * Check whether we have working codec for the specific coding scheme.
 * 
 * @return returns 1 if the codec is configured and working. Otherwise
 * 0 will be returned.
 */

int
TIFFIsCODECConfigured(uint16 scheme)
{
  const TIFFCodec* codec = TIFFFindCODEC(scheme);

  if(codec == NULL) {
            return 0;
        }
        if(codec->init == NULL) {
            return 0;
        }
  if(codec->init != NotConfigured){
            return 1;
        }
  return 0;
}

