initial commit
took me a day to make the base... ...and ~12 hours to write a reader that reads 100% of all demo songs in 1.0
This commit is contained in:
tildearrow
commit
783d56c72a
26 changed files with 1660 additions and 0 deletions
630
src/engine/engine.cpp
Normal file
630
src/engine/engine.cpp
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@ -0,0 +1,630 @@
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#include "engine.h"
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#include "safeReader.h"
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#include "../ta-log.h"
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#include "../audio/sdl.h"
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#include <zlib.h>
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void process(float** in, float** out, int inChans, int outChans, unsigned int size) {
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for (int i=0; i<outChans; i++) {
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for (unsigned int j=0; j<size; j++) {
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out[i][j]=(float)(j%128)/128.0f;
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}
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}
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}
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#define DIV_READ_SIZE 131072
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#define DIV_DMF_MAGIC ".DelekDefleMask."
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struct InflateBlock {
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unsigned char* buf;
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size_t len;
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size_t blockSize;
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InflateBlock(size_t s) {
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buf=new unsigned char[s];
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len=s;
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blockSize=0;
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}
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~InflateBlock() {
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delete[] buf;
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len=0;
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}
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};
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DivSystem systemFromFile(unsigned char val) {
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switch (val) {
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case 0x01:
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return DIV_SYSTEM_YMU759;
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case 0x02:
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return DIV_SYSTEM_GENESIS;
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case 0x03:
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return DIV_SYSTEM_SMS;
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case 0x04:
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return DIV_SYSTEM_GB;
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case 0x05:
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return DIV_SYSTEM_PCE;
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case 0x06:
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return DIV_SYSTEM_NES;
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case 0x07:
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return DIV_SYSTEM_C64_8580;
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case 0x08:
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return DIV_SYSTEM_ARCADE;
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case 0x09:
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return DIV_SYSTEM_YM2610;
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case 0x42:
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return DIV_SYSTEM_GENESIS_EXT;
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case 0x47:
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return DIV_SYSTEM_C64_6581;
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case 0x49:
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return DIV_SYSTEM_YM2610_EXT;
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}
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return DIV_SYSTEM_NULL;
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}
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int getChannelCount(DivSystem sys) {
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switch (sys) {
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case DIV_SYSTEM_NULL:
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return 0;
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case DIV_SYSTEM_YMU759:
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return 17;
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case DIV_SYSTEM_GENESIS:
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return 10;
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case DIV_SYSTEM_SMS:
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case DIV_SYSTEM_GB:
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return 4;
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case DIV_SYSTEM_PCE:
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return 6;
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case DIV_SYSTEM_NES:
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return 5;
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case DIV_SYSTEM_C64_6581:
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case DIV_SYSTEM_C64_8580:
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return 3;
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case DIV_SYSTEM_ARCADE:
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case DIV_SYSTEM_GENESIS_EXT:
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case DIV_SYSTEM_YM2610:
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return 13;
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case DIV_SYSTEM_YM2610_EXT:
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return 16;
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}
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return 0;
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}
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bool DivEngine::load(void* f, size_t slen) {
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unsigned char* file;
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size_t len;
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if (slen<16) {
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logE("too small!");
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return false;
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}
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if (memcmp(f,DIV_DMF_MAGIC,16)!=0) {
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logD("loading as zlib...\n");
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// try zlib
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z_stream zl;
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memset(&zl,0,sizeof(z_stream));
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zl.avail_in=slen;
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zl.next_in=(Bytef*)f;
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zl.zalloc=NULL;
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zl.zfree=NULL;
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zl.opaque=NULL;
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int nextErr;
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nextErr=inflateInit(&zl);
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if (nextErr!=Z_OK) {
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if (zl.msg==NULL) {
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logE("zlib error: unknown! %d\n",nextErr);
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} else {
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logE("zlib error: %s\n",zl.msg);
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}
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return false;
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}
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std::vector<InflateBlock*> blocks;
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while (true) {
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InflateBlock* ib=new InflateBlock(DIV_READ_SIZE);
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zl.next_out=ib->buf;
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zl.avail_out=ib->len;
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nextErr=inflate(&zl,Z_SYNC_FLUSH);
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if (nextErr!=Z_OK && nextErr!=Z_STREAM_END) {
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if (zl.msg==NULL) {
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logE("zlib error: unknown error! %d\n",nextErr);
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} else {
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logE("zlib inflate: %s\n",zl.msg);
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}
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for (InflateBlock* i: blocks) delete i;
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blocks.clear();
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delete ib;
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return false;
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}
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ib->blockSize=ib->len-zl.avail_out;
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blocks.push_back(ib);
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if (nextErr==Z_STREAM_END) {
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break;
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}
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}
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nextErr=inflateEnd(&zl);
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if (nextErr!=Z_OK) {
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if (zl.msg==NULL) {
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logE("zlib end error: unknown error! %d\n",nextErr);
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} else {
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logE("zlib end: %s\n",zl.msg);
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}
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for (InflateBlock* i: blocks) delete i;
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blocks.clear();
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return false;
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}
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size_t finalSize=0;
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size_t curSeek=0;
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for (InflateBlock* i: blocks) {
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finalSize+=i->blockSize;
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}
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if (finalSize<1) {
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logE("compressed too small!\n");
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for (InflateBlock* i: blocks) delete i;
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blocks.clear();
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return false;
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}
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file=new unsigned char[finalSize];
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for (InflateBlock* i: blocks) {
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memcpy(&file[curSeek],i->buf,i->blockSize);
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curSeek+=i->blockSize;
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delete i;
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}
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blocks.clear();
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len=finalSize;
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} else {
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logD("loading as uncompressed\n");
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file=(unsigned char*)f;
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len=slen;
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}
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if (memcmp(file,DIV_DMF_MAGIC,16)!=0) {
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logE("not a valid module!\n");
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return false;
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}
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SafeReader reader=SafeReader(file,len);
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try {
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DivSong ds;
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if (!reader.seek(16,SEEK_SET)) {
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logE("premature end of file!");
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return false;
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}
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ds.version=reader.readC();
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logI("module version %d (0x%.2x)\n",ds.version,ds.version);
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char sys=0;
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if (ds.version<0x09) {
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// V E R S I O N -> 3 <-
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// AWESOME
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ds.system=DIV_SYSTEM_YMU759;
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} else {
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sys=reader.readC();
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ds.system=systemFromFile(sys);
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}
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if (ds.system==DIV_SYSTEM_NULL) {
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logE("invalid system 0x%.2x!",sys);
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return false;
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}
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if (ds.system==DIV_SYSTEM_YMU759 && ds.version<0x10) { // TODO
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ds.vendor=reader.readString((unsigned char)reader.readC());
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ds.carrier=reader.readString((unsigned char)reader.readC());
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ds.category=reader.readString((unsigned char)reader.readC());
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ds.name=reader.readString((unsigned char)reader.readC());
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ds.author=reader.readString((unsigned char)reader.readC());
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ds.writer=reader.readString((unsigned char)reader.readC());
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ds.composer=reader.readString((unsigned char)reader.readC());
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ds.arranger=reader.readString((unsigned char)reader.readC());
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ds.copyright=reader.readString((unsigned char)reader.readC());
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ds.manGroup=reader.readString((unsigned char)reader.readC());
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ds.manInfo=reader.readString((unsigned char)reader.readC());
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ds.createdDate=reader.readString((unsigned char)reader.readC());
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ds.revisionDate=reader.readString((unsigned char)reader.readC());
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logI("%s by %s\n",ds.name.c_str(),ds.author.c_str());
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logI("has YMU-specific data:\n");
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logI("- carrier: %s\n",ds.carrier.c_str());
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logI("- category: %s\n",ds.category.c_str());
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logI("- vendor: %s\n",ds.vendor.c_str());
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logI("- writer: %s\n",ds.writer.c_str());
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logI("- composer: %s\n",ds.composer.c_str());
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logI("- arranger: %s\n",ds.arranger.c_str());
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logI("- copyright: %s\n",ds.copyright.c_str());
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logI("- management group: %s\n",ds.manGroup.c_str());
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logI("- management info: %s\n",ds.manInfo.c_str());
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logI("- created on: %s\n",ds.createdDate.c_str());
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logI("- revision date: %s\n",ds.revisionDate.c_str());
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} else {
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ds.name=reader.readString((unsigned char)reader.readC());
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ds.author=reader.readString((unsigned char)reader.readC());
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logI("%s by %s\n",ds.name.c_str(),ds.author.c_str());
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}
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logI("reading module data...\n");
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if (ds.version>0x0c) {
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ds.hilightA=reader.readC();
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ds.hilightB=reader.readC();
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}
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ds.timeBase=reader.readC();
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ds.speed1=reader.readC();
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if (ds.version>0x03) {
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ds.speed2=reader.readC();
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ds.pal=reader.readC();
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ds.customTempo=reader.readC();
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} else {
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ds.speed2=ds.speed1;
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}
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if (ds.version>0x0a) {
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String hz=reader.readString(3);
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if (ds.customTempo) {
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ds.hz=std::stoi(hz);
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}
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}
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// TODO
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if (ds.version>0x17) {
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ds.patLen=reader.readI();
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} else {
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ds.patLen=(unsigned char)reader.readC();
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}
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ds.ordersLen=(unsigned char)reader.readC();
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if (ds.version<20 && ds.version>3) {
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ds.arpLen=reader.readC();
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} else {
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ds.arpLen=1;
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}
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logI("reading pattern matrix (%d)...\n",ds.ordersLen);
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for (int i=0; i<getChannelCount(ds.system); i++) {
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for (int j=0; j<ds.ordersLen; j++) {
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ds.orders.ord[i][j]=reader.readC();
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if (ds.orders.ord[i][j]>ds.ordersLen) {
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logW("pattern %d exceeds order count %d!\n",ds.orders.ord[i][j],ds.ordersLen);
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}
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}
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}
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if (ds.version>0x03) {
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ds.insLen=reader.readC();
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} else {
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ds.insLen=16;
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}
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logI("reading instruments (%d)...\n",ds.insLen);
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for (int i=0; i<ds.insLen; i++) {
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DivInstrument* ins=new DivInstrument;
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if (ds.version>0x03) {
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ins->name=reader.readString((unsigned char)reader.readC());
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}
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logD("%d name: %s\n",i,ins->name.c_str());
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if (ds.version<0x0b) {
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// instruments in ancient versions were all FM or STD.
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ins->mode=1;
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} else {
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ins->mode=reader.readC();
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}
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if (ins->mode) { // FM
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if (ds.system!=DIV_SYSTEM_GENESIS &&
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ds.system!=DIV_SYSTEM_GENESIS_EXT &&
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ds.system!=DIV_SYSTEM_ARCADE &&
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ds.system!=DIV_SYSTEM_YM2610 &&
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ds.system!=DIV_SYSTEM_YM2610_EXT &&
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ds.system!=DIV_SYSTEM_YMU759) {
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logE("FM instrument in non-FM system. oopsie?\n");
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return false;
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}
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ins->fm.alg=reader.readC();
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if (ds.version<0x13) {
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reader.readC();
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}
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ins->fm.fb=reader.readC();
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if (ds.version<0x13) {
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reader.readC();
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}
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ins->fm.fms=reader.readC();
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if (ds.version<0x13) {
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reader.readC();
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ins->fm.ops=2+reader.readC()*2;
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if (ds.system!=DIV_SYSTEM_YMU759) ins->fm.ops=4;
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} else {
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ins->fm.ops=4;
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}
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if (ins->fm.ops!=2 && ins->fm.ops!=4) {
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logE("invalid op count %d. did we read it wrong?\n",ins->fm.ops);
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return false;
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}
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ins->fm.ams=reader.readC();
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for (int j=0; j<ins->fm.ops; j++) {
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ins->fm.op[j].am=reader.readC();
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ins->fm.op[j].ar=reader.readC();
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if (ds.version<0x13) {
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ins->fm.op[j].dam=reader.readC();
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}
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ins->fm.op[j].dr=reader.readC();
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if (ds.version<0x13) {
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ins->fm.op[j].dvb=reader.readC();
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ins->fm.op[j].egt=reader.readC();
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ins->fm.op[j].ksl=reader.readC();
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if (ds.version<0x11) { // TODO: don't know when did this change
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ins->fm.op[j].ksr=reader.readC();
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}
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}
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ins->fm.op[j].mult=reader.readC();
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ins->fm.op[j].rr=reader.readC();
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ins->fm.op[j].sl=reader.readC();
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if (ds.version<0x13) {
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ins->fm.op[j].sus=reader.readC();
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}
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ins->fm.op[j].tl=reader.readC();
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if (ds.version<0x13) {
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ins->fm.op[j].vib=reader.readC();
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ins->fm.op[j].ws=reader.readC();
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} else {
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ins->fm.op[j].dt2=reader.readC();
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}
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if (ds.version>0x03) {
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ins->fm.op[j].rs=reader.readC();
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ins->fm.op[j].dt=reader.readC();
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ins->fm.op[j].d2r=reader.readC();
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ins->fm.op[j].ssgEnv=reader.readC();
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}
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logD("OP%d: AM %d AR %d DAM %d DR %d DVB %d EGT %d KSL %d MULT %d RR %d SL %d SUS %d TL %d VIB %d WS %d RS %d DT %d D2R %d SSG-EG %d\n",j,
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ins->fm.op[j].am,
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ins->fm.op[j].ar,
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ins->fm.op[j].dam,
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ins->fm.op[j].dr,
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ins->fm.op[j].dvb,
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ins->fm.op[j].egt,
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ins->fm.op[j].ksl,
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ins->fm.op[j].mult,
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ins->fm.op[j].rr,
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ins->fm.op[j].sl,
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ins->fm.op[j].sus,
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ins->fm.op[j].tl,
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ins->fm.op[j].vib,
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ins->fm.op[j].ws,
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ins->fm.op[j].rs,
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ins->fm.op[j].dt,
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ins->fm.op[j].d2r,
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ins->fm.op[j].ssgEnv
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);
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}
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} else { // STD
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if (ds.system!=DIV_SYSTEM_GB || ds.version<0x12) {
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ins->std.volMacroLen=reader.readC();
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for (int j=0; j<ins->std.volMacroLen; j++) {
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if (ds.version<0x0e) {
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ins->std.volMacro[j]=reader.readC();
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} else {
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ins->std.volMacro[j]=reader.readI();
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}
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}
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if (ins->std.volMacroLen>0) {
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ins->std.volMacroLoop=reader.readC();
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}
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}
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ins->std.arpMacroLen=reader.readC();
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for (int j=0; j<ins->std.arpMacroLen; j++) {
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if (ds.version<0x0e) {
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ins->std.arpMacro[j]=reader.readC();
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} else {
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ins->std.arpMacro[j]=reader.readI();
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}
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}
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if (ins->std.arpMacroLen>0) {
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ins->std.arpMacroLoop=reader.readC();
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}
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if (ds.version>0x0f) { // TODO
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ins->std.arpMacroMode=reader.readC();
|
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}
|
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ins->std.dutyMacroLen=reader.readC();
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for (int j=0; j<ins->std.dutyMacroLen; j++) {
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if (ds.version<0x0e) {
|
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ins->std.dutyMacro[j]=reader.readC();
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} else {
|
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ins->std.dutyMacro[j]=reader.readI();
|
||||
}
|
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}
|
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if (ins->std.dutyMacroLen>0) {
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ins->std.dutyMacroLoop=reader.readC();
|
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}
|
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ins->std.waveMacroLen=reader.readC();
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for (int j=0; j<ins->std.waveMacroLen; j++) {
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if (ds.version<0x0e) {
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ins->std.waveMacro[j]=reader.readC();
|
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} else {
|
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ins->std.waveMacro[j]=reader.readI();
|
||||
}
|
||||
}
|
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if (ins->std.waveMacroLen>0) {
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ins->std.waveMacroLoop=reader.readC();
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}
|
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|
||||
if (ds.system==DIV_SYSTEM_C64_6581 || ds.system==DIV_SYSTEM_C64_8580) {
|
||||
ins->c64.triOn=reader.readC();
|
||||
ins->c64.sawOn=reader.readC();
|
||||
ins->c64.pulseOn=reader.readC();
|
||||
ins->c64.noiseOn=reader.readC();
|
||||
|
||||
ins->c64.a=reader.readC();
|
||||
ins->c64.d=reader.readC();
|
||||
ins->c64.s=reader.readC();
|
||||
ins->c64.r=reader.readC();
|
||||
|
||||
ins->c64.duty=reader.readC();
|
||||
|
||||
ins->c64.ringMod=reader.readC();
|
||||
ins->c64.oscSync=reader.readC();
|
||||
ins->c64.toFilter=reader.readC();
|
||||
if (ds.version<0x11) {
|
||||
ins->c64.volIsCutoff=reader.readI();
|
||||
} else {
|
||||
ins->c64.volIsCutoff=reader.readC();
|
||||
}
|
||||
ins->c64.initFilter=reader.readC();
|
||||
|
||||
ins->c64.res=reader.readC();
|
||||
ins->c64.cut=reader.readC();
|
||||
ins->c64.hp=reader.readC();
|
||||
ins->c64.lp=reader.readC();
|
||||
ins->c64.bp=reader.readC();
|
||||
ins->c64.ch3off=reader.readC();
|
||||
}
|
||||
|
||||
if (ds.system==DIV_SYSTEM_GB && ds.version>0x11) {
|
||||
ins->gb.envVol=reader.readC();
|
||||
ins->gb.envDir=reader.readC();
|
||||
ins->gb.envLen=reader.readC();
|
||||
ins->gb.soundLen=reader.readC();
|
||||
}
|
||||
}
|
||||
|
||||
ds.ins.push_back(ins);
|
||||
}
|
||||
|
||||
if (ds.version>0x0b) {
|
||||
ds.waveLen=(unsigned char)reader.readC();
|
||||
logI("reading wavetables (%d)...\n",ds.waveLen);
|
||||
for (int i=0; i<ds.waveLen; i++) {
|
||||
DivWavetable* wave=new DivWavetable;
|
||||
wave->len=(unsigned char)reader.readI();
|
||||
if (wave->len>32) {
|
||||
logE("invalid wave length %d. are we doing something wrong?\n",wave->len);
|
||||
return false;
|
||||
}
|
||||
logD("%d length %d\n",i,wave->len);
|
||||
for (int j=0; j<wave->len; j++) {
|
||||
if (ds.version<0x0e) {
|
||||
wave->data[j]=reader.readC();
|
||||
} else {
|
||||
wave->data[j]=reader.readI();
|
||||
}
|
||||
}
|
||||
ds.wave.push_back(wave);
|
||||
}
|
||||
}
|
||||
|
||||
logI("reading patterns (%d channels, %d orders)...\n",getChannelCount(ds.system),ds.ordersLen);
|
||||
for (int i=0; i<getChannelCount(ds.system); i++) {
|
||||
DivChannelData* chan=new DivChannelData;
|
||||
if (ds.version<0x0a) {
|
||||
chan->effectRows=1;
|
||||
} else {
|
||||
chan->effectRows=reader.readC();
|
||||
}
|
||||
logD("%d fx rows: %d\n",i,chan->effectRows);
|
||||
if (chan->effectRows>4 || chan->effectRows<1) {
|
||||
logE("invalid effect row count %d. are you sure everything is ok?\n",chan->effectRows);
|
||||
return false;
|
||||
}
|
||||
for (int j=0; j<ds.ordersLen; j++) {
|
||||
DivPattern* pat=new DivPattern;
|
||||
for (int k=0; k<ds.patLen; k++) {
|
||||
// note
|
||||
pat->data[k][0]=reader.readS();
|
||||
// octave
|
||||
pat->data[k][1]=reader.readS();
|
||||
// volume
|
||||
pat->data[k][3]=reader.readS();
|
||||
for (int l=0; l<chan->effectRows; l++) {
|
||||
// effect
|
||||
pat->data[k][4+(l<<1)]=reader.readS();
|
||||
pat->data[k][5+(l<<1)]=reader.readS();
|
||||
}
|
||||
// instrument
|
||||
pat->data[k][2]=reader.readS();
|
||||
}
|
||||
chan->data.push_back(pat);
|
||||
}
|
||||
ds.pat.push_back(chan);
|
||||
}
|
||||
|
||||
ds.sampleLen=reader.readC();
|
||||
logI("reading samples (%d)...\n",ds.sampleLen);
|
||||
if (ds.version<0x0b && ds.sampleLen>0) { // TODO what is this for?
|
||||
reader.readC();
|
||||
}
|
||||
for (int i=0; i<ds.sampleLen; i++) {
|
||||
DivSample* sample=new DivSample;
|
||||
sample->length=reader.readI();
|
||||
if (sample->length<0) {
|
||||
logE("invalid sample length %d. are we doing something wrong?\n",sample->length);
|
||||
return false;
|
||||
}
|
||||
if (ds.version>0x16) {
|
||||
sample->name=reader.readString((unsigned char)reader.readC());
|
||||
} else {
|
||||
sample->name="";
|
||||
}
|
||||
logD("%d name %s (%d)\n",i,sample->name.c_str(),sample->length);
|
||||
if (ds.version<0x0b) {
|
||||
sample->rate=0;
|
||||
sample->pitch=0;
|
||||
sample->vol=0;
|
||||
} else {
|
||||
sample->rate=reader.readC();
|
||||
sample->pitch=reader.readC();
|
||||
sample->vol=reader.readC();
|
||||
}
|
||||
if (ds.version>0x15) {
|
||||
sample->depth=reader.readC();
|
||||
} else {
|
||||
sample->depth=16;
|
||||
}
|
||||
if (sample->length>0) {
|
||||
if (ds.version<0x0b) {
|
||||
sample->data=new short[1+(sample->length/2)];
|
||||
reader.read(sample->data,sample->length);
|
||||
sample->length/=2;
|
||||
} else {
|
||||
sample->data=new short[sample->length];
|
||||
reader.read(sample->data,sample->length*2);
|
||||
}
|
||||
}
|
||||
ds.sample.push_back(sample);
|
||||
}
|
||||
|
||||
if (reader.tell()<reader.size()) {
|
||||
logW("premature end of song (we are at %x, but size is %x)\n",reader.tell(),reader.size());
|
||||
}
|
||||
|
||||
song=ds;
|
||||
} catch (EndOfFileException e) {
|
||||
logE("premature end of file!\n");
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
void DivEngine::play() {
|
||||
|
||||
}
|
||||
|
||||
bool DivEngine::init() {
|
||||
output=new TAAudioSDL;
|
||||
want.bufsize=1024;
|
||||
want.fragments=2;
|
||||
want.inChans=0;
|
||||
want.outChans=2;
|
||||
want.outFormat=TA_AUDIO_FORMAT_F32;
|
||||
want.name="DivAudio";
|
||||
|
||||
output->setCallback(process);
|
||||
|
||||
logI("initializing audio.\n");
|
||||
if (!output->init(want,got)) {
|
||||
logE("error while initializing audio!\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!output->setRun(true)) {
|
||||
printf("error while activating!\n");
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue