void JB2Dict::JB2Codec::code_bitmap_by_cross_coding (GBitmap &bm, GP<GBitmap> &cbm, const int libno) { // Make sure bitmaps will not be disturbed GP<GBitmap> copycbm=GBitmap::create(); if (cbm->monitor()) { // Perform a copy when the bitmap is explicitely shared GMonitorLock lock2(cbm->monitor()); copycbm->init(*cbm); cbm = copycbm; } GMonitorLock lock1(bm.monitor()); // Center bitmaps const int cw = cbm->columns(); const int dw = bm.columns(); const int dh = bm.rows(); const LibRect &l = libinfo[libno]; const int xd2c = (dw/2 - dw + 1) - ((l.right - l.left + 1)/2 - l.right); const int yd2c = (dh/2 - dh + 1) - ((l.top - l.bottom + 1)/2 - l.top); // Ensure borders are adequate bm.minborder(2); cbm->minborder(2-xd2c); cbm->minborder(2+dw+xd2c-cw); // Initialize row pointers const int dy = dh - 1; const int cy = dy + yd2c; #ifndef NDEBUG bm.check_border(); cbm->check_border(); #endif code_bitmap_by_cross_coding (bm,*cbm, xd2c, dw, dy, cy, bm[dy+1], bm[dy], (*cbm)[cy+1] + xd2c, (*cbm)[cy ] + xd2c, (*cbm)[cy-1] + xd2c); }
void JB2Dict::JB2Codec::code_bitmap_directly (GBitmap &bm) { // Make sure bitmap will not be disturbed GMonitorLock lock(bm.monitor()); // ensure borders are adequate bm.minborder(3); // initialize row pointers int dy = bm.rows() - 1; code_bitmap_directly(bm,bm.columns(),dy,bm[dy+2],bm[dy+1],bm[dy]); }