mirror of
https://github.com/KDE/krfb
synced 2026-07-01 07:31:16 -07:00
fac983d5a4
This is currently required to be able to split off the event processing code in small functions so that it is possible to integrate libvncserver's event loop code with Qt's event loop properly. This is also what vino does; the whole event loop integration idea was taken from there. svn path=/trunk/KDE/kdenetwork/krfb/; revision=1195283
143 lines
4.7 KiB
C
Executable File
143 lines
4.7 KiB
C
Executable File
/*
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* tableinittctemplate.c - template for initialising lookup tables for
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* truecolour to truecolour translation.
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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 a different definition of the macro OUT.
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* For each value of OUT, this file defines two functions for initialising
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* lookup tables. One is for truecolour translation using a single lookup
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* table, the other is for truecolour translation using three separate
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* lookup tables for the red, green 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(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 OUT_T CONCAT3E(uint,OUT,_t)
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#define SwapOUT(x) CONCAT2E(Swap,OUT(x))
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#define rfbInitTrueColourSingleTableOUT \
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CONCAT2E(rfbInitTrueColourSingleTable,OUT)
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#define rfbInitTrueColourRGBTablesOUT CONCAT2E(rfbInitTrueColourRGBTables,OUT)
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#define rfbInitOneRGBTableOUT CONCAT2E(rfbInitOneRGBTable,OUT)
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static void
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rfbInitOneRGBTableOUT (OUT_T *table, int inMax, int outMax, int outShift,
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int swap);
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/*
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* rfbInitTrueColourSingleTable sets up a single lookup table for truecolour
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* translation.
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*/
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static void
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rfbInitTrueColourSingleTableOUT (char **table, rfbPixelFormat *in,
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rfbPixelFormat *out)
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{
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int i;
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int inRed, inGreen, inBlue, outRed, outGreen, outBlue;
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OUT_T *t;
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int nEntries = 1 << in->bitsPerPixel;
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if (*table) free(*table);
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*table = (char *)malloc(nEntries * sizeof(OUT_T));
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t = (OUT_T *)*table;
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for (i = 0; i < nEntries; i++) {
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inRed = (i >> in->redShift) & in->redMax;
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inGreen = (i >> in->greenShift) & in->greenMax;
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inBlue = (i >> in->blueShift) & in->blueMax;
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outRed = (inRed * out->redMax + in->redMax / 2) / in->redMax;
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outGreen = (inGreen * out->greenMax + in->greenMax / 2) / in->greenMax;
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outBlue = (inBlue * out->blueMax + in->blueMax / 2) / in->blueMax;
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t[i] = ((outRed << out->redShift) |
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(outGreen << out->greenShift) |
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(outBlue << out->blueShift));
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#if (OUT != 8)
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if (out->bigEndian != in->bigEndian) {
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t[i] = SwapOUT(t[i]);
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}
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#endif
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}
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}
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/*
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* rfbInitTrueColourRGBTables sets up three separate lookup tables for the
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* red, green and blue values.
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*/
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static void
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rfbInitTrueColourRGBTablesOUT (char **table, rfbPixelFormat *in,
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rfbPixelFormat *out)
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{
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OUT_T *redTable;
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OUT_T *greenTable;
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OUT_T *blueTable;
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if (*table) free(*table);
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*table = (char *)malloc((in->redMax + in->greenMax + in->blueMax + 3)
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* sizeof(OUT_T));
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redTable = (OUT_T *)*table;
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greenTable = redTable + in->redMax + 1;
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blueTable = greenTable + in->greenMax + 1;
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rfbInitOneRGBTableOUT (redTable, in->redMax, out->redMax,
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out->redShift, (out->bigEndian != in->bigEndian));
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rfbInitOneRGBTableOUT (greenTable, in->greenMax, out->greenMax,
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out->greenShift, (out->bigEndian != in->bigEndian));
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rfbInitOneRGBTableOUT (blueTable, in->blueMax, out->blueMax,
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out->blueShift, (out->bigEndian != in->bigEndian));
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}
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static void
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rfbInitOneRGBTableOUT (OUT_T *table, int inMax, int outMax, int outShift,
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int swap)
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{
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int i;
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int nEntries = inMax + 1;
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for (i = 0; i < nEntries; i++) {
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table[i] = ((i * outMax + inMax / 2) / inMax) << outShift;
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#if (OUT != 8)
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if (swap) {
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table[i] = SwapOUT(table[i]);
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}
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#endif
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}
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}
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#undef OUT_T
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#undef SwapOUT
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#undef rfbInitTrueColourSingleTableOUT
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#undef rfbInitTrueColourRGBTablesOUT
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#undef rfbInitOneRGBTableOUT
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