mirror of
https://invent.kde.org/network/krfb
synced 2024-07-08 20:15:53 +00:00
9f56633c0b
My patches in this local fork have been merged upstream, but they have been merged after 0.9.8 and 0.9.9 hasn't been released yet, so we cannot yet switch back to finding libvncserver externally. So I am syncing now with basically what is 0.9.8 + my patches and a few bugfixes. svn path=/trunk/KDE/kdenetwork/krfb/; revision=1258493
118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
/*
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* tabletranstemplate.c - template for translation using lookup tables.
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*
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* This file shouldn't be compiled. It is included multiple times by
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* translate.c, each time with different definitions of the macros IN and OUT.
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*
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* For each pair of values IN and OUT, this file defines two functions for
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* translating a given rectangle of pixel data. One uses a single lookup
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* table, and the other uses three separate lookup tables for the red, green
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* and blue values.
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*
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* I know this code isn't nice to read because of all the macros, but
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* efficiency is important here.
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*/
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/*
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* OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>.
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* Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge.
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* All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#if !defined(IN) || !defined(OUT)
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#error "This file shouldn't be compiled."
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#error "It is included as part of translate.c"
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#endif
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#define IN_T CONCAT3E(uint,IN,_t)
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#define OUT_T CONCAT3E(uint,OUT,_t)
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#define rfbTranslateWithSingleTableINtoOUT \
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CONCAT4E(rfbTranslateWithSingleTable,IN,to,OUT)
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#define rfbTranslateWithRGBTablesINtoOUT \
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CONCAT4E(rfbTranslateWithRGBTables,IN,to,OUT)
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/*
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* rfbTranslateWithSingleTableINtoOUT translates a rectangle of pixel data
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* using a single lookup table.
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*/
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static void
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rfbTranslateWithSingleTableINtoOUT (char *table, rfbPixelFormat *in,
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rfbPixelFormat *out,
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char *iptr, char *optr,
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int bytesBetweenInputLines,
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int width, int height)
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{
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IN_T *ip = (IN_T *)iptr;
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OUT_T *op = (OUT_T *)optr;
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int ipextra = bytesBetweenInputLines / sizeof(IN_T) - width;
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OUT_T *opLineEnd;
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OUT_T *t = (OUT_T *)table;
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while (height > 0) {
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opLineEnd = op + width;
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while (op < opLineEnd) {
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*(op++) = t[*(ip++)];
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}
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ip += ipextra;
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height--;
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}
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}
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/*
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* rfbTranslateWithRGBTablesINtoOUT translates a rectangle of pixel data
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* using three separate lookup tables for the red, green and blue values.
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*/
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static void
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rfbTranslateWithRGBTablesINtoOUT (char *table, rfbPixelFormat *in,
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rfbPixelFormat *out,
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char *iptr, char *optr,
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int bytesBetweenInputLines,
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int width, int height)
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{
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IN_T *ip = (IN_T *)iptr;
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OUT_T *op = (OUT_T *)optr;
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int ipextra = bytesBetweenInputLines / sizeof(IN_T) - width;
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OUT_T *opLineEnd;
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OUT_T *redTable = (OUT_T *)table;
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OUT_T *greenTable = redTable + in->redMax + 1;
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OUT_T *blueTable = greenTable + in->greenMax + 1;
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while (height > 0) {
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opLineEnd = &op[width];
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while (op < opLineEnd) {
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*(op++) = (redTable[(*ip >> in->redShift) & in->redMax] |
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greenTable[(*ip >> in->greenShift) & in->greenMax] |
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blueTable[(*ip >> in->blueShift) & in->blueMax]);
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ip++;
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}
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ip += ipextra;
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height--;
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}
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}
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#undef IN_T
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#undef OUT_T
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#undef rfbTranslateWithSingleTableINtoOUT
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#undef rfbTranslateWithRGBTablesINtoOUT
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