diff options
Diffstat (limited to 'plugins/adplug/adplug/diskopl.cpp')
-rw-r--r-- | plugins/adplug/adplug/diskopl.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/plugins/adplug/adplug/diskopl.cpp b/plugins/adplug/adplug/diskopl.cpp new file mode 100644 index 00000000..3296c0a1 --- /dev/null +++ b/plugins/adplug/adplug/diskopl.cpp @@ -0,0 +1,90 @@ +/* + * Adplug - Replayer for many OPL2/OPL3 audio file formats. + * Copyright (C) 1999 - 2005 Simon Peter, <dn.tlp@gmx.net>, et al. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * diskopl.cpp - Disk Writer OPL, by Simon Peter <dn.tlp@gmx.net> + */ + +#include "diskopl.h" + +//static const unsigned short note_table[12] = {363,385,408,432,458,485,514,544,577,611,647,686}; +const unsigned char CDiskopl::op_table[9] = {0x00, 0x01, 0x02, 0x08, 0x09, 0x0a, 0x10, 0x11, 0x12}; + +CDiskopl::CDiskopl(std::string filename) + : old_freq(0.0f), del(1), nowrite(false) +{ + unsigned short clock = 0xffff; + + currType = TYPE_OPL3; + f = fopen(filename.c_str(),"wb"); + fwrite("RAWADATA",8,1,f); + fwrite(&clock,sizeof(clock),1,f); +} + +CDiskopl::~CDiskopl() +{ + fclose(f); +} + +void CDiskopl::update(CPlayer *p) +{ + unsigned short clock; + unsigned int wait; + + if(p->getrefresh() != old_freq) { + old_freq = p->getrefresh(); + del = wait = (unsigned int)(18.2f / old_freq); + clock = (unsigned short)(1192737/(old_freq*(wait+1))); + fputc(0,f); fputc(2,f); + fwrite(&clock,2,1,f); + } + if(!nowrite) { + fputc(del+1,f); + fputc(0,f); + } +} + +void CDiskopl::setchip(int n) +{ + Copl::setchip(n); + + if(!nowrite) { + fputc(currChip + 1, f); + fputc(2, f); + } +} + +void CDiskopl::write(int reg, int val) +{ + if(!nowrite) + diskwrite(reg,val); +} + +void CDiskopl::init() +{ + for (int i=0;i<9;i++) { // stop instruments + diskwrite(0xb0 + i,0); // key off + diskwrite(0x80 + op_table[i],0xff); // fastest release + } + diskwrite(0xbd,0); // clear misc. register +} + +void CDiskopl::diskwrite(int reg, int val) +{ + fputc(val,f); + fputc(reg,f); +} |