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/*
* 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)
{
uint8_t *ip = (uint8_t *)iptr;
uint8_t *op = (uint8_t *)optr;
int ipextra = bytesBetweenInputLines - width * 3;
uint8_t *opLineEnd;
uint8_t *t = (uint8_t *)table;
int shift = rfbEndianTest?0:8;
uint8_t c;
while (height > 0) {
opLineEnd = op + width*3;
while (op < opLineEnd) {
*(uint32_t*)op = t[((*(uint32_t *)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)
{
uint8_t *ip = (uint8_t *)iptr;
uint8_t *op = (uint8_t *)optr;
int ipextra = bytesBetweenInputLines - width*3;
uint8_t *opLineEnd;
uint8_t *redTable = (uint8_t *)table;
uint8_t *greenTable = redTable + 3*(in->redMax + 1);
uint8_t *blueTable = greenTable + 3*(in->greenMax + 1);
uint32_t outValue,inValue;
int shift = rfbEndianTest?0:8;
while (height > 0) {
opLineEnd = op+3*width;
while (op < opLineEnd) {
inValue = ((*(uint32_t *)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 CONCAT3E(uint,BPP,_t)
#define OUT_T CONCAT3E(uint,BPP,_t)
#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)
{
uint8_t *ip = (uint8_t *)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[((*(uint32_t *)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)
{
uint8_t *ip = (uint8_t *)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;
uint32_t inValue;
int shift = rfbEndianTest?0:8;
while (height > 0) {
opLineEnd = &op[width];
while (op < opLineEnd) {
inValue = ((*(uint32_t *)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;
uint8_t *op = (uint8_t *)optr;
int ipextra = bytesBetweenInputLines / sizeof(IN_T) - width;
uint8_t *opLineEnd;
uint8_t *t = (uint8_t *)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;
uint8_t *op = (uint8_t *)optr;
int ipextra = bytesBetweenInputLines / sizeof(IN_T) - width;
uint8_t *opLineEnd;
uint8_t *redTable = (uint8_t *)table;
uint8_t *greenTable = redTable + 3*(in->redMax + 1);
uint8_t *blueTable = greenTable + 3*(in->greenMax + 1);
uint32_t 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
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