/* $Id: tif_codec.c 4718 2009-08-07 15:17:36Z adcockj $ */

/*
 * 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,                      NULL }
};

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

    TIFFErrorExt(tif->tif_clientdata, 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;
}

