You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
282 lines
8.7 KiB
282 lines
8.7 KiB
15 years ago
|
/*
|
||
|
|
* tabletranstemplate.c - template for translation using lookup tables.
|
||
|
|
*
|
||
|
|
* This file shouldn't be compiled. It is included multiple times by
|
||
|
|
* translate.c, each time with different definitions of the macros IN and OUT.
|
||
|
|
*
|
||
|
|
* For each pair of values IN and OUT, this file defines two functions for
|
||
|
|
* translating a given rectangle of pixel data. One uses a single lookup
|
||
|
|
* table, and the other uses three separate lookup tables for the red, green
|
||
|
|
* and blue values.
|
||
|
|
*
|
||
|
|
* I know this code isn't nice to read because of all the macros, but
|
||
|
|
* efficiency is important here.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>.
|
||
|
|
* Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge.
|
||
|
|
* All Rights Reserved.
|
||
|
|
*
|
||
|
|
* This is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This software is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this software; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
||
|
|
* USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if !defined(BPP)
|
||
|
|
#error "This file shouldn't be compiled."
|
||
|
|
#error "It is included as part of translate.c"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if BPP == 24
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rfbTranslateWithSingleTableINtoOUT translates a rectangle of pixel data
|
||
|
|
* using a single lookup table.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void
|
||
|
|
rfbTranslateWithSingleTable24to24 (char *table, rfbPixelFormat *in,
|
||
|
|
rfbPixelFormat *out,
|
||
|
|
char *iptr, char *optr,
|
||
|
|
int bytesBetweenInputLines,
|
||
|
|
int width, int height)
|
||
|
|
{
|
||
|
|
CARD8 *ip = (CARD8 *)iptr;
|
||
|
|
CARD8 *op = (CARD8 *)optr;
|
||
|
|
int ipextra = bytesBetweenInputLines - width * 3;
|
||
|
|
CARD8 *opLineEnd;
|
||
|
|
CARD8 *t = (CARD8 *)table;
|
||
|
|
int shift = rfbEndianTest?0:8;
|
||
|
|
CARD8 c;
|
||
|
|
|
||
|
|
while (height > 0) {
|
||
|
|
opLineEnd = op + width*3;
|
||
|
|
|
||
|
|
while (op < opLineEnd) {
|
||
|
|
*(CARD32*)op = t[((*(CARD32 *)ip)>>shift)&0x00ffffff];
|
||
|
|
if(!rfbEndianTest)
|
||
|
|
memmove(op,op+1,3);
|
||
|
|
if (out->bigEndian != in->bigEndian) {
|
||
|
|
c = op[0]; op[0] = op[2]; op[2] = c;
|
||
|
|
}
|
||
|
|
op += 3;
|
||
|
|
ip += 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
ip += ipextra;
|
||
|
|
height--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rfbTranslateWithRGBTablesINtoOUT translates a rectangle of pixel data
|
||
|
|
* using three separate lookup tables for the red, green and blue values.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void
|
||
|
|
rfbTranslateWithRGBTables24to24 (char *table, rfbPixelFormat *in,
|
||
|
|
rfbPixelFormat *out,
|
||
|
|
char *iptr, char *optr,
|
||
|
|
int bytesBetweenInputLines,
|
||
|
|
int width, int height)
|
||
|
|
{
|
||
|
|
CARD8 *ip = (CARD8 *)iptr;
|
||
|
|
CARD8 *op = (CARD8 *)optr;
|
||
|
|
int ipextra = bytesBetweenInputLines - width*3;
|
||
|
|
CARD8 *opLineEnd;
|
||
|
|
CARD8 *redTable = (CARD8 *)table;
|
||
|
|
CARD8 *greenTable = redTable + 3*(in->redMax + 1);
|
||
|
|
CARD8 *blueTable = greenTable + 3*(in->greenMax + 1);
|
||
|
|
CARD32 outValue,inValue;
|
||
|
|
int shift = rfbEndianTest?0:8;
|
||
|
|
|
||
|
|
while (height > 0) {
|
||
|
|
opLineEnd = op+3*width;
|
||
|
|
|
||
|
|
while (op < opLineEnd) {
|
||
|
|
inValue = ((*(CARD32 *)ip)>>shift)&0x00ffffff;
|
||
|
|
outValue = (redTable[(inValue >> in->redShift) & in->redMax] |
|
||
|
|
greenTable[(inValue >> in->greenShift) & in->greenMax] |
|
||
|
|
blueTable[(inValue >> in->blueShift) & in->blueMax]);
|
||
|
|
memcpy(op,&outValue,3);
|
||
|
|
op += 3;
|
||
|
|
ip+=3;
|
||
|
|
}
|
||
|
|
ip += ipextra;
|
||
|
|
height--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#define IN_T CONCAT2E(CARD,BPP)
|
||
|
|
#define OUT_T CONCAT2E(CARD,BPP)
|
||
|
|
#define rfbTranslateWithSingleTable24toOUT \
|
||
|
|
CONCAT4E(rfbTranslateWithSingleTable,24,to,BPP)
|
||
|
|
#define rfbTranslateWithSingleTableINto24 \
|
||
|
|
CONCAT4E(rfbTranslateWithSingleTable,BPP,to,24)
|
||
|
|
#define rfbTranslateWithRGBTables24toOUT \
|
||
|
|
CONCAT4E(rfbTranslateWithRGBTables,24,to,BPP)
|
||
|
|
#define rfbTranslateWithRGBTablesINto24 \
|
||
|
|
CONCAT4E(rfbTranslateWithRGBTables,BPP,to,24)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rfbTranslateWithSingleTableINtoOUT translates a rectangle of pixel data
|
||
|
|
* using a single lookup table.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void
|
||
|
|
rfbTranslateWithSingleTable24toOUT (char *table, rfbPixelFormat *in,
|
||
|
|
rfbPixelFormat *out,
|
||
|
|
char *iptr, char *optr,
|
||
|
|
int bytesBetweenInputLines,
|
||
|
|
int width, int height)
|
||
|
|
{
|
||
|
|
CARD8 *ip = (CARD8 *)iptr;
|
||
|
|
OUT_T *op = (OUT_T *)optr;
|
||
|
|
int ipextra = bytesBetweenInputLines - width*3;
|
||
|
|
OUT_T *opLineEnd;
|
||
|
|
OUT_T *t = (OUT_T *)table;
|
||
|
|
int shift = rfbEndianTest?0:8;
|
||
|
|
|
||
|
|
while (height > 0) {
|
||
|
|
opLineEnd = op + width;
|
||
|
|
|
||
|
|
while (op < opLineEnd) {
|
||
|
|
*(op++) = t[((*(CARD32 *)ip)>>shift)&0x00ffffff];
|
||
|
|
ip+=3;
|
||
|
|
}
|
||
|
|
|
||
|
|
ip += ipextra;
|
||
|
|
height--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rfbTranslateWithRGBTablesINtoOUT translates a rectangle of pixel data
|
||
|
|
* using three separate lookup tables for the red, green and blue values.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void
|
||
|
|
rfbTranslateWithRGBTables24toOUT (char *table, rfbPixelFormat *in,
|
||
|
|
rfbPixelFormat *out,
|
||
|
|
char *iptr, char *optr,
|
||
|
|
int bytesBetweenInputLines,
|
||
|
|
int width, int height)
|
||
|
|
{
|
||
|
|
CARD8 *ip = (CARD8 *)iptr;
|
||
|
|
OUT_T *op = (OUT_T *)optr;
|
||
|
|
int ipextra = bytesBetweenInputLines - width*3;
|
||
|
|
OUT_T *opLineEnd;
|
||
|
|
OUT_T *redTable = (OUT_T *)table;
|
||
|
|
OUT_T *greenTable = redTable + in->redMax + 1;
|
||
|
|
OUT_T *blueTable = greenTable + in->greenMax + 1;
|
||
|
|
CARD32 inValue;
|
||
|
|
int shift = rfbEndianTest?0:8;
|
||
|
|
|
||
|
|
while (height > 0) {
|
||
|
|
opLineEnd = &op[width];
|
||
|
|
|
||
|
|
while (op < opLineEnd) {
|
||
|
|
inValue = ((*(CARD32 *)ip)>>shift)&0x00ffffff;
|
||
|
|
*(op++) = (redTable[(inValue >> in->redShift) & in->redMax] |
|
||
|
|
greenTable[(inValue >> in->greenShift) & in->greenMax] |
|
||
|
|
blueTable[(inValue >> in->blueShift) & in->blueMax]);
|
||
|
|
ip+=3;
|
||
|
|
}
|
||
|
|
ip += ipextra;
|
||
|
|
height--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rfbTranslateWithSingleTableINto24 translates a rectangle of pixel data
|
||
|
|
* using a single lookup table.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void
|
||
|
|
rfbTranslateWithSingleTableINto24 (char *table, rfbPixelFormat *in,
|
||
|
|
rfbPixelFormat *out,
|
||
|
|
char *iptr, char *optr,
|
||
|
|
int bytesBetweenInputLines,
|
||
|
|
int width, int height)
|
||
|
|
{
|
||
|
|
IN_T *ip = (IN_T *)iptr;
|
||
|
|
CARD8 *op = (CARD8 *)optr;
|
||
|
|
int ipextra = bytesBetweenInputLines / sizeof(IN_T) - width;
|
||
|
|
CARD8 *opLineEnd;
|
||
|
|
CARD8 *t = (CARD8 *)table;
|
||
|
|
|
||
|
|
while (height > 0) {
|
||
|
|
opLineEnd = op + width * 3;
|
||
|
|
|
||
|
|
while (op < opLineEnd) {
|
||
|
|
memcpy(op,&t[3*(*(ip++))],3);
|
||
|
|
op += 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
ip += ipextra;
|
||
|
|
height--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rfbTranslateWithRGBTablesINto24 translates a rectangle of pixel data
|
||
|
|
* using three separate lookup tables for the red, green and blue values.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void
|
||
|
|
rfbTranslateWithRGBTablesINto24 (char *table, rfbPixelFormat *in,
|
||
|
|
rfbPixelFormat *out,
|
||
|
|
char *iptr, char *optr,
|
||
|
|
int bytesBetweenInputLines,
|
||
|
|
int width, int height)
|
||
|
|
{
|
||
|
|
IN_T *ip = (IN_T *)iptr;
|
||
|
|
CARD8 *op = (CARD8 *)optr;
|
||
|
|
int ipextra = bytesBetweenInputLines / sizeof(IN_T) - width;
|
||
|
|
CARD8 *opLineEnd;
|
||
|
|
CARD8 *redTable = (CARD8 *)table;
|
||
|
|
CARD8 *greenTable = redTable + 3*(in->redMax + 1);
|
||
|
|
CARD8 *blueTable = greenTable + 3*(in->greenMax + 1);
|
||
|
|
CARD32 outValue;
|
||
|
|
|
||
|
|
while (height > 0) {
|
||
|
|
opLineEnd = op+3*width;
|
||
|
|
|
||
|
|
while (op < opLineEnd) {
|
||
|
|
outValue = (redTable[(*ip >> in->redShift) & in->redMax] |
|
||
|
|
greenTable[(*ip >> in->greenShift) & in->greenMax] |
|
||
|
|
blueTable[(*ip >> in->blueShift) & in->blueMax]);
|
||
|
|
memcpy(op,&outValue,3);
|
||
|
|
op += 3;
|
||
|
|
ip++;
|
||
|
|
}
|
||
|
|
ip += ipextra;
|
||
|
|
height--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef IN_T
|
||
|
|
#undef OUT_T
|
||
|
|
#undef rfbTranslateWithSingleTable24toOUT
|
||
|
|
#undef rfbTranslateWithRGBTables24toOUT
|
||
|
|
#undef rfbTranslateWithSingleTableINto24
|
||
|
|
#undef rfbTranslateWithRGBTablesINto24
|
||
|
|
|
||
|
|
#endif
|