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Diffstat (limited to 'nx-X11/lib/lbxutil/image/dfaxg42d.c')
-rw-r--r--nx-X11/lib/lbxutil/image/dfaxg42d.c420
1 files changed, 0 insertions, 420 deletions
diff --git a/nx-X11/lib/lbxutil/image/dfaxg42d.c b/nx-X11/lib/lbxutil/image/dfaxg42d.c
deleted file mode 100644
index 609992d62..000000000
--- a/nx-X11/lib/lbxutil/image/dfaxg42d.c
+++ /dev/null
@@ -1,420 +0,0 @@
-/* $Xorg: dfaxg42d.c,v 1.3 2000/08/17 19:46:40 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/dfaxg42d.c,v 1.5 2001/01/17 19:43:35 dawes Exp $ */
-
-#include <X11/Xos.h>
-#include <X11/Xfuncproto.h>
-#include <X11/Xfuncs.h>
-#include <stdlib.h>
-#include "g3states.h"
-#include "lbxfax.h"
-#include <X11/extensions/lbximage.h>
-
-/*
- * -------------------------------------------------------------------------
- * FAX G42D decoding for 1 bit images
- * -------------------------------------------------------------------------
- */
-
-static short sp_data, sp_bit;
-
-
-/*
- * Fetch a byte from the input stream
- */
-
-static unsigned char
-fetchByte (unsigned char **inbuf)
-
-{
- unsigned char byte = **inbuf;
- (*inbuf)++;
- return (byte);
-}
-
-
-/*
- * Decode a run of white.
- */
-
-static int
-decode_white_run (unsigned char **inbuf)
-
-{
- short state = sp_bit;
- short action;
- int runlen = 0;
-
- for (;;)
- {
- if (sp_bit == 0)
- {
- nextbyte:
- sp_data = fetchByte (inbuf);
- }
-
- action = TIFFFax1DAction[state][sp_data];
- state = TIFFFax1DNextState[state][sp_data];
- if (action == ACT_INCOMP)
- goto nextbyte;
- if (action == ACT_INVALID)
- return (G3CODE_INVALID);
- if (action == ACT_EOL)
- return (G3CODE_EOL);
- sp_bit = state;
- action = RUNLENGTH(action - ACT_WRUNT);
- runlen += action;
- if (action < 64)
- return (runlen);
- }
-}
-
-
-/*
- * Decode a run of black.
- */
-
-static int
-decode_black_run (unsigned char **inbuf)
-
-{
- short state = sp_bit + 8;
- short action;
- int runlen = 0;
-
- for (;;)
- {
- if (sp_bit == 0)
- {
- nextbyte:
- sp_data = fetchByte (inbuf);
- }
-
- action = TIFFFax1DAction[state][sp_data];
- state = TIFFFax1DNextState[state][sp_data];
- if (action == ACT_INCOMP)
- goto nextbyte;
- if (action == ACT_INVALID)
- return (G3CODE_INVALID);
- if (action == ACT_EOL)
- return (G3CODE_EOL);
- sp_bit = state;
- action = RUNLENGTH(action - ACT_BRUNT);
- runlen += action;
- if (action < 64)
- return (runlen);
- state += 8;
- }
-}
-
-
-/*
- * Return the next uncompressed mode code word.
- */
-
-static int
-decode_uncomp_code (unsigned char **inbuf)
-
-{
- short code;
-
- do {
- if (sp_bit == 0 || sp_bit > 7)
- sp_data = fetchByte (inbuf);
-
- code = TIFFFaxUncompAction[sp_bit][sp_data];
- sp_bit = TIFFFaxUncompNextState[sp_bit][sp_data];
- } while (code == ACT_INCOMP);
-
- return (code);
-}
-
-
-/*
- * Fill a span with ones.
- */
-
-static void
-fillspan (char *cp,
- int x, int count)
-
-{
- static unsigned char masks[] =
- { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff };
-
- if (count <= 0)
- return;
-
- cp += x>>3;
-
- if (x &= 7)
- {
- /* align to byte boundary */
-
- if (count < 8 - x) {
- *cp++ |= masks[count] >> x;
- return;
- }
-
- *cp++ |= 0xff >> x;
- count -= 8 - x;
- }
-
- while (count >= 8)
- {
- *cp++ = (char)0xff;
- count -= 8;
- }
-
- *cp |= masks[count];
-}
-
-
-/*
- * Return the next bit in the input stream. This is
- * used to extract 2D tag values and the color tag
- * at the end of a terminating uncompressed data code.
- */
-
-static int
-nextbit (unsigned char **inbuf)
-
-{
- static unsigned char bitMask[8] =
- { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
- int bit;
-
- if (sp_bit == 0)
- sp_data = fetchByte (inbuf);
-
- bit = sp_data & bitMask[sp_bit];
-
- if (++(sp_bit) > 7)
- sp_bit = 0;
-
- return (bit);
-}
-
-
-static int
-DecodeFaxG42D (unsigned char **inbuf,
- unsigned char *refline,
- int pixels_per_line,
- unsigned char *outbuf)
-
-{
- int a0 = -1;
- int b1, b2;
- int run1, run2; /* for horizontal mode */
- short mode;
- short color = 1;
-
- do {
- if (sp_bit == 0 || sp_bit > 7)
- sp_data = fetchByte (inbuf);
-
- mode = TIFFFax2DMode[sp_bit][sp_data];
- sp_bit = TIFFFax2DNextState[sp_bit][sp_data];
-
- switch (mode)
- {
- case MODE_NULL:
- break;
-
- case MODE_PASS:
- b2 = LbxImageFindDiff (refline, a0, pixels_per_line, !color);
- b1 = LbxImageFindDiff (refline, b2, pixels_per_line, color);
- b2 = LbxImageFindDiff (refline, b1, pixels_per_line, !color);
-
- if (color)
- {
- if (a0 < 0)
- a0 = 0;
- fillspan ((char *) outbuf, a0, b2 - a0);
- }
-
- a0 = b2;
- break;
-
- case MODE_HORIZ:
- if (color == 1)
- {
- run1 = decode_white_run (inbuf);
- run2 = decode_black_run (inbuf);
- }
- else
- {
- run1 = decode_black_run (inbuf);
- run2 = decode_white_run (inbuf);
- }
-
- /*
- * Do the appropriate fill. Note that we exit this logic with
- * the same color that we enter with since we do 2 fills. This
- * explains the somewhat obscure logic below.
- */
-
- if (a0 < 0)
- a0 = 0;
- if (a0 + run1 > pixels_per_line)
- run1 = pixels_per_line - a0;
- if (color)
- fillspan ((char *) outbuf, a0, run1);
- a0 += run1;
- if (a0 + run2 > pixels_per_line)
- run2 = pixels_per_line - a0;
- if (!color)
- fillspan ((char *) outbuf, a0, run2);
- a0 += run2;
- break;
-
- case MODE_VERT_V0:
- case MODE_VERT_VR1:
- case MODE_VERT_VR2:
- case MODE_VERT_VR3:
- case MODE_VERT_VL1:
- case MODE_VERT_VL2:
- case MODE_VERT_VL3:
- b2 = LbxImageFindDiff (refline, a0, pixels_per_line, !color);
- b1 = LbxImageFindDiff (refline, b2, pixels_per_line, color);
- b1 += mode - MODE_VERT_V0;
-
- if (color)
- {
- if (a0 < 0)
- a0 = 0;
- fillspan ((char *) outbuf, a0, b1 - a0);
- }
-
- color = !color;
- a0 = b1;
- break;
-
- case MODE_UNCOMP:
- /*
- * Uncompressed mode: select from the special set of code words.
- */
-
- if (a0 < 0)
- a0 = 0;
- do
- {
- mode = decode_uncomp_code (inbuf);
- switch (mode)
- {
- case UNCOMP_RUN1:
- case UNCOMP_RUN2:
- case UNCOMP_RUN3:
- case UNCOMP_RUN4:
- case UNCOMP_RUN5:
- run1 = mode - UNCOMP_RUN0;
- fillspan ((char *) outbuf, a0+run1-1, 1);
- a0 += run1;
- break;
-
- case UNCOMP_RUN6:
- a0 += 5;
- break;
-
- case UNCOMP_TRUN0:
- case UNCOMP_TRUN1:
- case UNCOMP_TRUN2:
- case UNCOMP_TRUN3:
- case UNCOMP_TRUN4:
-
- run1 = mode - UNCOMP_TRUN0;
- a0 += run1;
- color = nextbit (inbuf) ? 0 : 1;
- break;
-
- case UNCOMP_INVALID:
- goto bad;
-
- case UNCOMP_EOF:
- return (0);
- }
- } while (mode < UNCOMP_EXIT);
- break;
-
- case MODE_ERROR_1:
- /* fall thru... */
- case MODE_ERROR:
- goto bad;
-
- default:
- return (0);
- }
-
- } while (a0 < pixels_per_line);
-
-bad:
- return (a0 >= pixels_per_line);
-}
-
-
-int
-LbxImageDecodeFaxG42D (unsigned char *inbuf,
- unsigned char *outbuf,
- int image_bytes,
- int pixels_per_line,
- int padded_bytes_per_scanline,
- int reverse_bits)
-
-{
- int bytes_per_scanline = ROUNDUP8 (pixels_per_line);
- unsigned char *refline, *refptr;
- unsigned char *outbuf_start = outbuf;
- int bytes_left = image_bytes;
- int i;
-
- refline = (unsigned char *) malloc (bytes_per_scanline + 1);
- refptr = refline + 1;
-
- for (i = 0; i < bytes_per_scanline + 1; i++)
- refline[i] = 0xff;
-
- bzero (outbuf, image_bytes);
-
- sp_bit = 0;
- sp_data = 0;
-
- while (bytes_left > 0)
- {
- if (!DecodeFaxG42D (&inbuf, refptr, pixels_per_line, outbuf))
- return (0);
-
- memcpy (refptr, outbuf, bytes_per_scanline);
-
- outbuf += padded_bytes_per_scanline;
- bytes_left -= padded_bytes_per_scanline;
- }
-
- free ((char *) refline);
-
- if (reverse_bits)
- LbxReverseBits (outbuf_start, image_bytes);
-
- return (outbuf - outbuf_start);
-}
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