diff options
Diffstat (limited to 'utils/gen_adldata/file_formats/load_op2.h')
| -rw-r--r-- | utils/gen_adldata/file_formats/load_op2.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/utils/gen_adldata/file_formats/load_op2.h b/utils/gen_adldata/file_formats/load_op2.h new file mode 100644 index 0000000..30a118f --- /dev/null +++ b/utils/gen_adldata/file_formats/load_op2.h @@ -0,0 +1,148 @@ +#ifndef LOAD_OP2_H +#define LOAD_OP2_H + +#include "../progs_cache.h" + +#pragma pack(push, 1) +struct Doom_OPL2instrument +{ + unsigned char trem_vibr_1; /* OP 1: tremolo/vibrato/sustain/KSR/multi */ + unsigned char att_dec_1; /* OP 1: attack rate/decay rate */ + unsigned char sust_rel_1; /* OP 1: sustain level/release rate */ + unsigned char wave_1; /* OP 1: waveform select */ + unsigned char scale_1; /* OP 1: key scale level */ + unsigned char level_1; /* OP 1: output level */ + unsigned char feedback; /* feedback/AM-FM (both operators) */ + unsigned char trem_vibr_2; /* OP 2: tremolo/vibrato/sustain/KSR/multi */ + unsigned char att_dec_2; /* OP 2: attack rate/decay rate */ + unsigned char sust_rel_2; /* OP 2: sustain level/release rate */ + unsigned char wave_2; /* OP 2: waveform select */ + unsigned char scale_2; /* OP 2: key scale level */ + unsigned char level_2; /* OP 2: output level */ + unsigned char unused; + short basenote; /* base note offset */ +} __attribute__((packed)); +#pragma pack(pop) + +struct Doom_opl_instr +{ + unsigned short flags; +#define FL_FIXED_PITCH 0x0001 // note has fixed pitch (drum note) +#define FL_UNKNOWN 0x0002 // ??? (used in instrument #65 only) +#define FL_DOUBLE_VOICE 0x0004 // use two voices instead of one + + unsigned char finetune; + unsigned char note; + struct Doom_OPL2instrument patchdata[2]; +} __attribute__((packed)); + + +static bool LoadDoom(const char *fn, unsigned bank, const char *prefix) +{ + #ifdef HARD_BANKS + writeIni("OP2", fn, prefix, bank, INI_Both); + #endif + FILE *fp = std::fopen(fn, "rb"); + if(!fp) + return false; + std::fseek(fp, 0, SEEK_END); + std::vector<unsigned char> data(size_t(std::ftell(fp))); + std::rewind(fp); + + if(std::fread(&data[0], 1, data.size(), fp) != data.size()) + { + std::fclose(fp); + return false; + } + std::fclose(fp); + + for(unsigned a = 0; a < 175; ++a) + { + const size_t offset1 = 0x18A4 + a * 32; + const size_t offset2 = 8 + a * 36; + + std::string name; + for(unsigned p = 0; p < 32; ++p) + if(data[offset1] != '\0') + name += char(data[offset1 + p]); + + //printf("%3d %3d %3d %8s: ", a,b,c, name.c_str()); + int gmno = int(a < 128 ? a : ((a | 128) + 35)); + + char name2[512]; + sprintf(name2, "%s%c%u", prefix, (gmno < 128 ? 'M' : 'P'), gmno & 127); + + Doom_opl_instr &ins = *(Doom_opl_instr *) &data[offset2]; + + insdata tmp[2]; + tmp[0].diff = false; + tmp[1].diff = true; + for(unsigned index = 0; index < 2; ++index) + { + const Doom_OPL2instrument &src = ins.patchdata[index]; + tmp[index].data[0] = src.trem_vibr_1; + tmp[index].data[1] = src.trem_vibr_2; + tmp[index].data[2] = src.att_dec_1; + tmp[index].data[3] = src.att_dec_2; + tmp[index].data[4] = src.sust_rel_1; + tmp[index].data[5] = src.sust_rel_2; + tmp[index].data[6] = src.wave_1; + tmp[index].data[7] = src.wave_2; + tmp[index].data[8] = src.scale_1 | src.level_1; + tmp[index].data[9] = src.scale_2 | src.level_2; + tmp[index].data[10] = src.feedback; + tmp[index].finetune = int8_t(src.basenote + 12); + } + struct ins tmp2; + tmp2.notenum = ins.note; + tmp2.pseudo4op = false; + tmp2.voice2_fine_tune = 0.0; + while(tmp2.notenum && tmp2.notenum < 20) + { + tmp2.notenum += 12; + tmp[0].finetune -= 12; + tmp[1].finetune -= 12; + } + + if(!(ins.flags & 4)) + { + size_t resno = InsertIns(tmp[0], tmp[0], tmp2, std::string(1, '\377') + name, name2); + SetBank(bank, (unsigned int)gmno, resno); + } + else // Double instrument + { + tmp2.pseudo4op = true; + tmp2.voice2_fine_tune = (((double)ins.finetune - 128.0) * 15.625) / 1000.0; + if(ins.finetune == 129) + tmp2.voice2_fine_tune = 0.000025; + else if(ins.finetune == 127) + tmp2.voice2_fine_tune = -0.000025; + //printf("/*DOOM FINE TUNE (flags %000X instrument is %d) IS %d -> %lf*/\n", ins.flags, a, ins.finetune, tmp2.fine_tune); + size_t resno = InsertIns(tmp[0], tmp[1], tmp2, std::string(1, '\377') + name, name2); + SetBank(bank, (unsigned int)gmno, resno); + } + + /*const Doom_OPL2instrument& A = ins.patchdata[0]; + const Doom_OPL2instrument& B = ins.patchdata[1]; + printf( + "flags:%04X fine:%02X note:%02X\n" + "{t:%02X a:%02X s:%02X w:%02X s:%02X l:%02X f:%02X\n" + " t:%02X a:%02X s:%02X w:%02X s:%02X l:%02X ?:%02X base:%d}\n" + "{t:%02X a:%02X s:%02X w:%02X s:%02X l:%02X f:%02X\n" + " t:%02X a:%02X s:%02X w:%02X s:%02X l:%02X ?:%02X base:%d} ", + ins.flags, ins.finetune, ins.note, + A.trem_vibr_1, A.att_dec_1, A.sust_rel_1, + A.wave_1, A.scale_1, A.level_1, A.feedback, + A.trem_vibr_2, A.att_dec_2, A.sust_rel_2, + A.wave_2, A.scale_2, A.level_2, A.unused, A.basenote, + B.trem_vibr_1, B.att_dec_1, B.sust_rel_1, + B.wave_1, B.scale_1, B.level_1, B.feedback, + B.trem_vibr_2, B.att_dec_2, B.sust_rel_2, + B.wave_2, B.scale_2, B.level_2, B.unused, B.basenote); + printf(" %s VS %s\n", name.c_str(), MidiInsName[a]); + printf("------------------------------------------------------------\n");*/ + } + return true; +} + +#endif // LOAD_OP2_H |