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author | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2015-02-02 15:02:49 +0100 |
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committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2015-02-02 15:02:49 +0100 |
commit | b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73 (patch) | |
tree | 4361edef0d42d5bf5ac984ef72b4fac35426eae7 /nx-X11/lib/lbxutil/image/dfaxg42d.c | |
parent | 0d5a83e986f39982c0924652a3662e60b1f23162 (diff) | |
download | nx-libs-b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73.tar.gz nx-libs-b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73.tar.bz2 nx-libs-b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73.zip |
massive reduction of unneeded files
Diffstat (limited to 'nx-X11/lib/lbxutil/image/dfaxg42d.c')
-rw-r--r-- | nx-X11/lib/lbxutil/image/dfaxg42d.c | 420 |
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); -} |