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Diffstat (limited to 'nx-X11/lib/lbxutil/image/efaxg42d.c')
-rw-r--r--nx-X11/lib/lbxutil/image/efaxg42d.c328
1 files changed, 0 insertions, 328 deletions
diff --git a/nx-X11/lib/lbxutil/image/efaxg42d.c b/nx-X11/lib/lbxutil/image/efaxg42d.c
deleted file mode 100644
index a89b5e0d2..000000000
--- a/nx-X11/lib/lbxutil/image/efaxg42d.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/* $Xorg: efaxg42d.c,v 1.3 2000/08/17 19:46:41 cpqbld Exp $ */
-/*
- * Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
- * Copyright (c) 1991, 1992 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.
- */
-/* $XFree86: xc/lib/lbxutil/image/efaxg42d.c,v 1.4 2001/01/17 19:43:35 dawes Exp $ */
-
-#include <X11/Xos.h>
-#include <X11/Xfuncproto.h>
-#include <stdlib.h>
-#include "lbxfax.h"
-#include <X11/extensions/lbximage.h>
-#include "lbxbwcodes.h"
-
-/*
- * -------------------------------------------------------------------------
- * FAX G42D encoding for 1 bit images
- * -------------------------------------------------------------------------
- */
-
-static short sp_data, sp_bit;
-
-static tableentry horizcode =
- { 3, 0x1 }; /* 001 */
-
-static tableentry passcode =
- { 4, 0x1 }; /* 0001 */
-
-static tableentry vcodes[7] = {
- { 7, 0x03 }, /* 0000 011 */
- { 6, 0x03 }, /* 0000 11 */
- { 3, 0x03 }, /* 011 */
- { 1, 0x1 }, /* 1 */
- { 3, 0x2 }, /* 010 */
- { 6, 0x02 }, /* 0000 10 */
- { 7, 0x02 } /* 0000 010 */
-};
-
-typedef struct {
- unsigned char *bufStart;
- unsigned char *bufPtr;
- int bufSize;
- int bytesLeft;
-} Buffer;
-
-
-
-/*
- * Flush bits to output buffer.
- */
-
-static int
-flushbits (Buffer *outbuf)
-
-{
- if (outbuf->bytesLeft > 0)
- {
- *(outbuf->bufPtr++) = sp_data;
- outbuf->bytesLeft--;
-
- sp_data = 0;
- sp_bit = 8;
-
- return (1);
- }
- else
- return (0);
-}
-
-
-/*
- * Write a variable-length bit-value to the output stream. Values are
- * assumed to be at most 16 bits.
- */
-
-static int
-putbits (unsigned int bits,
- unsigned int length,
- Buffer *outbuf)
-
-{
- static int mask[9] =
- {0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff};
-
- while (length > sp_bit)
- {
- sp_data |= bits >> (length - sp_bit);
- length -= sp_bit;
- if (!flushbits (outbuf))
- return (0);
- }
-
- sp_data |= (bits & mask[length]) << (sp_bit - length);
- sp_bit -= length;
-
- if (sp_bit == 0)
- {
- if (!flushbits (outbuf))
- return (0);
- }
-
- return (1);
-}
-
-
-/*
- * Write a code to the output stream.
- */
-
-static int
-putcode (tableentry *te,
- Buffer *outbuf)
-
-{
- return (putbits (te->code, te->length, outbuf));
-}
-
-
-/*
- * Write the sequence of codes that describes the specified span of
- * zero's or one's. The appropriate table that holds the make-up and
- * terminating codes is supplied.
- */
-
-static int
-putspan (int span,
- tableentry *tab,
- Buffer *outbuf)
-
-{
- while (span >= 2624)
- {
- tableentry *te = &tab[63 + (2560 >> 6)];
- if (!putcode (te, outbuf))
- return (0);
- span -= te->runlen;
- }
-
- if (span >= 64)
- {
- tableentry *te = &tab[63 + (span >> 6)];
- if (!putcode (te, outbuf))
- return (0);
- span -= te->runlen;
- }
-
- if (!putcode (&tab[span], outbuf))
- return (0);
-
- return (1);
-}
-
-
-
-#define PIXEL(buf,ix) ((((buf)[(ix)>>3]) >> (7-((ix)&7))) & 1)
-
-static int
-EncodeFaxG42D (unsigned char *inbuf,
- unsigned char *refline,
- int bits,
- Buffer *outbuf)
-
-{
- short white = 1;
- int a0 = 0;
- int a1 = (PIXEL (inbuf, 0) != white ?
- 0 : LbxImageFindDiff (inbuf, 0, bits, white));
- int b1 = (PIXEL (refline, 0) != white ?
- 0 : LbxImageFindDiff (refline, 0, bits, white));
- int a2, b2;
-
- for (;;)
- {
- b2 = LbxImageFindDiff (refline, b1, bits, PIXEL (refline, b1));
- if (b2 >= a1)
- {
- int d = b1 - a1;
- if (!(-3 <= d && d <= 3))
- {
- /* horizontal mode */
-
- a2 = LbxImageFindDiff (inbuf, a1, bits, PIXEL (inbuf, a1));
- if (!putcode (&horizcode, outbuf))
- return (0);
-
- if (a0 + a1 == 0 || PIXEL (inbuf, a0) == white)
- {
- if (!putspan(a1 - a0, TIFFFaxWhiteCodes, outbuf))
- return (0);
- if (!putspan(a2 - a1, TIFFFaxBlackCodes, outbuf))
- return (0);
- }
- else
- {
- if (!putspan (a1 - a0, TIFFFaxBlackCodes, outbuf))
- return (0);
- if (!putspan (a2 - a1, TIFFFaxWhiteCodes, outbuf))
- return (0);
- }
-
- a0 = a2;
- }
- else
- {
- /* vertical mode */
-
- if (!putcode (&vcodes[d+3], outbuf))
- return (0);
- a0 = a1;
- }
- }
- else
- {
- /* pass mode */
-
- if (!putcode (&passcode, outbuf))
- return (0);
- a0 = b2;
- }
-
- if (a0 >= bits)
- break;
-
- a1 = LbxImageFindDiff (inbuf, a0, bits, PIXEL (inbuf, a0));
- b1 = LbxImageFindDiff (refline, a0, bits, !PIXEL (inbuf, a0));
- b1 = LbxImageFindDiff (refline, b1, bits, PIXEL (inbuf, a0));
- }
-
- return (1);
-}
-
-
-int
-LbxImageEncodeFaxG42D (unsigned char *inbuf,
- unsigned char *outbuf,
- int outbufSize,
- int image_bytes,
- int pixels_per_line,
- int padded_bytes_per_scanline,
- int reverse_bits,
- int *bytesCompressed)
-
-{
- int bytes_per_scanline = ROUNDUP8 (pixels_per_line);
- unsigned char *refline, *refptr;
- unsigned char *save_inbuf = inbuf;
- int bytes_left = image_bytes;
- Buffer OutBuf;
- int status, i;
-
- OutBuf.bufStart = OutBuf.bufPtr = outbuf;
- OutBuf.bufSize = OutBuf.bytesLeft = outbufSize;
-
- if (!(refline = (unsigned char *) malloc (bytes_per_scanline + 1)))
- return (LBX_IMAGE_COMPRESS_BAD_MALLOC);
-
- refptr = refline + 1;
-
- for (i = 0; i < bytes_per_scanline + 1; i++)
- refline[i] = 0xff;
-
- if (reverse_bits)
- LbxReverseBits (inbuf, image_bytes);
-
- sp_bit = 8;
- sp_data = 0;
-
- while (bytes_left > 0)
- {
- if (!(status = EncodeFaxG42D (inbuf, refptr,
- pixels_per_line, &OutBuf)))
- {
- goto bad;
- }
-
- memcpy (refptr, inbuf, bytes_per_scanline);
-
- inbuf += padded_bytes_per_scanline;
- bytes_left -= padded_bytes_per_scanline;
- }
-
- status = putbits (EOL, 12, &OutBuf);
- if (status)
- status = putbits (EOL, 12, &OutBuf);
- if (status && sp_bit != 8)
- {
- status = flushbits (&OutBuf);
- }
-
- bad:
-
- free ((char *) refline);
-
- /* put the bits back the way they were */
- if (reverse_bits)
- LbxReverseBits (save_inbuf, image_bytes);
-
- if (status)
- {
- *bytesCompressed = OutBuf.bufPtr - OutBuf.bufStart;
-
- if (OutBuf.bytesLeft > 0)
- return (LBX_IMAGE_COMPRESS_SUCCESS);
- else
- return (LBX_IMAGE_COMPRESS_NOT_WORTH_IT);
- }
- else
- return (LBX_IMAGE_COMPRESS_NOT_WORTH_IT);
-}
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