/***************************************************************************
**
** encline
**
** Encode a line for RLE PCX image data
*/
static int encline(unsigned char *line, int length, FILE *fp)
{
int local, last;
int srcindex;
int runcount;
int total;
last = *line++;
runcount = 1;
srcindex = 1;
total = 0;
while (srcindex < length) {
local = *line++;
srcindex++;
if (local == last) {
runcount++;
if (runcount == 0x3f) {
if (encput(last, runcount, fp)) {
return 1;
}
total += runcount;
runcount = 0;
}
}
else {
if (runcount) {
if (encput(last,runcount,fp)) {
return 1;
}
total += runcount;
}
last = local;
runcount = 1;
}
}
if (runcount) {
if (encput(last, runcount, fp)) {
return 1;
}
total += runcount;
}
return 0;
}
// PACKING //
int16_t encLine(uchar *inBuff, int16_t inLen,uchar *buf, int16_t outLen)
{
uchar curr,last;
uint16_t scrIndex;
uint16_t total;
uchar runCount;
total = 0;
runCount = 1;
last = *inBuff;
for( scrIndex=1;scrIndex<inLen&&total<outLen;scrIndex++)
{
curr = *(++inBuff);
if( curr==last ) // There is a "run" in the data, encode it //
{
runCount++;
if( runCount==63 )
{
total += encput(last,runCount,&buf[total]);
runCount = 0;
}
}
else // No "run" - curr!=last //
{
if( runCount )
total += encput(last,runCount,&buf[total]);
last = curr;
runCount = 1;
}
} // endloop //
if( runCount ) // finish up //
return total+encput(last,runCount,&buf[total]) ;
return total;
}
