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implement Furnace format saving

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experimental and no loading yet
This commit is contained in:
tildearrow 2022-01-09 03:52:41 -05:00
parent c43cc0ae80
commit 8d9cddde37
5 changed files with 390 additions and 28 deletions
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35
papers/format.md
View file

@ -12,7 +12,7 @@ size | description
-----|------------------------------------
16 | "-Furnace module-" format magic
2 | format version
| - should be 1 for Furnace 0.2
| - should be 15 for Furnace 0.3
2 | reserved
4 | song info pointer
8 | reserved
@ -22,7 +22,7 @@ size | description
size | description
-----|------------------------------------
4 | "INFO" block ID
4 | length of this block
4 | reserved
1 | time base
1 | speed 1
1 | speed 2
@ -38,10 +38,9 @@ size | description
2 | wavetable count
2 | sample count
4 | pattern count
1 | sound chip count
31 | list of sound chips
32 | list of sound chips
| - possible soundchips:
| - 0x00: invalid - 0 channels
| - 0x00: end of list
| - 0x01: YMU759 - 17 channels
| - 0x02: Genesis - 10 channels
| - 0x03: SMS (SN76489) - 4 channels
@ -55,10 +54,13 @@ size | description
| - 0x42: Genesis extended - 13 channels
| - 0x47: C64 (6581) - 3 channels
| - 0x49: Neo Geo extended - 16 channels
4 | reserved
124 | sound chip parameters (TODO)
4 | pointer song name
4 | pointer to song author
32 | sound chip volumes
| - signed char, 64=1.0, 127=~2.0
32 | sound chip panning
| - signed char, -128=left, 127=right
128 | sound chip parameters (TODO)
??? | song name
??? | song author
24 | reserved for compatibility flags
4?? | pointers to instruments
4?? | pointers to wavetables
@ -67,6 +69,7 @@ size | description
??? | orders
| - a table of shorts
| - size=channels*ordLen
| - read orders than channels
??? | effect columns
| - size=channels
@ -75,7 +78,7 @@ size | description
size | description
-----|------------------------------------
4 | "INST" block ID
4 | length of this block
4 | reserved
2 | format version (see header)
1 | instrument type
| - 0: standard
@ -84,7 +87,7 @@ size | description
| - 3: C64
| - 4: Amiga/sample
1 | reserved
4 | pointer to instrument name
??? | instrument name
--- | **FM instrument data**
1 | alg
1 | feedback
@ -166,8 +169,8 @@ size | description
size | description
-----|------------------------------------
4 | "WAVE" block ID
4 | length of this block
4 | pointer to wavetable name
4 | reserved
??? | wavetable name
4 | wavetable size
4 | wavetable min
4 | wavetable max
@ -178,8 +181,8 @@ size | description
size | description
-----|------------------------------------
4 | "SMPL" block ID
4 | length of this block
4 | pointer to sample name
4 | reserved
??? | sample name
4 | length
4 | rate
2 | volume
@ -193,7 +196,7 @@ size | description
size | description
-----|------------------------------------
4 | "PATR" block ID
4 | length of this block
4 | reserved
2 | channel
2 | pattern index
4 | reserved

334
src/engine/engine.cpp
View file

@ -532,6 +532,13 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
} else {
ins->mode=reader.readC();
}
ins->type=ins->mode?DIV_INS_FM:DIV_INS_STD;
if (ds.system[0]==DIV_SYSTEM_GB) {
ins->type=DIV_INS_GB;
}
if (ds.system[0]==DIV_SYSTEM_C64_8580 || ds.system[0]==DIV_SYSTEM_C64_6581) {
ins->type=DIV_INS_C64;
}
if (ins->mode) { // FM
if (!isFMSystem(ds.system[0])) {
@ -1018,6 +1025,333 @@ bool DivEngine::load(unsigned char* f, size_t slen) {
return false;
}
SafeWriter* DivEngine::saveFur() {
int insPtr[256];
int wavePtr[256];
int samplePtr[256];
std::vector<int> patPtr;
size_t ptrSeek;
// fail if this is an YMU759 song
if (song.system[0]==DIV_SYSTEM_YMU759) {
logE("cannot save YMU759 song!\n");
lastError="YMU759 song saving is not supported";
return NULL;
}
SafeWriter* w=new SafeWriter;
w->init();
/// HEADER
// write magic
w->write(DIV_FUR_MAGIC,16);
// write version
w->writeS(DIV_ENGINE_VERSION);
// reserved
w->writeS(0);
// song info pointer
w->writeI(32);
// reserved
w->writeI(0);
w->writeI(0);
// high short is channel
// low short is pattern number
std::vector<int> patsToWrite;
bool alreadyAdded[256];
for (int i=0; i<chans; i++) {
memset(alreadyAdded,0,256*sizeof(bool));
for (int j=0; j<song.ordersLen; j++) {
if (alreadyAdded[song.orders.ord[i][j]]) continue;
patsToWrite.push_back((i<<16)|song.orders.ord[i][j]);
alreadyAdded[song.orders.ord[i][j]]=true;
}
}
/// SONG INFO
w->write("INFO",4);
w->writeI(0);
w->writeC(song.timeBase);
w->writeC(song.speed1);
w->writeC(song.speed2);
w->writeC(song.arpLen);
w->writeF(song.hz);
w->writeS(song.patLen);
w->writeS(song.ordersLen);
w->writeC(song.hilightA);
w->writeC(song.hilightB);
w->writeS(song.insLen);
w->writeS(song.waveLen);
w->writeS(song.sampleLen);
w->writeI(patsToWrite.size());
for (int i=0; i<32; i++) {
if (i>=song.systemLen) {
w->writeC(0);
} else {
w->writeC(systemToFile(song.system[i]));
}
}
for (int i=0; i<32; i++) {
// for now
w->writeC(64);
}
for (int i=0; i<32; i++) {
// for now
w->writeC(0);
}
for (int i=0; i<32; i++) {
// for now
w->writeI(0);
}
// song name
w->writeString(song.name,false);
// song author
w->writeString(song.author,false);
// reserved
for (int i=0; i<24; i++) {
w->writeC(0);
}
ptrSeek=w->tell();
// instrument pointers (we'll seek here later)
for (int i=0; i<song.insLen; i++) {
w->writeI(0);
}
// wavetable pointers (we'll seek here later)
for (int i=0; i<song.waveLen; i++) {
w->writeI(0);
}
// sample pointers (we'll seek here later)
for (int i=0; i<song.sampleLen; i++) {
w->writeI(0);
}
// pattern pointers (we'll seek here later)
for (size_t i=0; i<patsToWrite.size(); i++) {
w->writeI(0);
}
for (int i=0; i<chans; i++) {
for (int j=0; j<song.ordersLen; j++) {
w->writeC(song.orders.ord[i][j]);
}
}
for (int i=0; i<chans; i++) {
w->writeC(song.pat[i].effectRows);
}
/// INSTRUMENT
for (int i=0; i<song.insLen; i++) {
DivInstrument* ins=song.ins[i];
insPtr[i]=w->tell();
w->write("INST",4);
w->writeI(0);
w->writeS(DIV_ENGINE_VERSION);
w->writeC(ins->type);
w->writeC(0);
w->writeString(ins->name,false);
// FM
w->writeC(ins->fm.alg);
w->writeC(ins->fm.fb);
w->writeC(ins->fm.fms);
w->writeC(ins->fm.ams);
w->writeC(4); // operator count; always 4
w->writeC(0); // reserved
w->writeC(0);
w->writeC(0);
for (int j=0; j<4; j++) {
DivInstrumentFM::Operator& op=ins->fm.op[j];
w->writeC(op.am);
w->writeC(op.ar);
w->writeC(op.dr);
w->writeC(op.mult);
w->writeC(op.rr);
w->writeC(op.sl);
w->writeC(op.tl);
w->writeC(op.dt2);
w->writeC(op.rs);
w->writeC(op.dt);
w->writeC(op.d2r);
w->writeC(op.ssgEnv);
w->writeC(op.dam);
w->writeC(op.dvb);
w->writeC(op.egt);
w->writeC(op.ksl);
w->writeC(op.sus);
w->writeC(op.vib);
w->writeC(op.ws);
w->writeC(op.ksr);
// reserved
for (int k=0; k<12; k++) {
w->writeC(0);
}
}
// GB
w->writeC(ins->gb.envVol);
w->writeC(ins->gb.envDir);
w->writeC(ins->gb.envLen);
w->writeC(ins->gb.soundLen);
// C64
w->writeC(ins->c64.triOn);
w->writeC(ins->c64.sawOn);
w->writeC(ins->c64.pulseOn);
w->writeC(ins->c64.noiseOn);
w->writeC(ins->c64.a);
w->writeC(ins->c64.d);
w->writeC(ins->c64.s);
w->writeC(ins->c64.r);
w->writeS((ins->c64.duty*4096)/100);
w->writeC(ins->c64.ringMod);
w->writeC(ins->c64.oscSync);
w->writeC(ins->c64.toFilter);
w->writeC(ins->c64.initFilter);
w->writeC(ins->c64.volIsCutoff);
w->writeC(ins->c64.res);
w->writeC(ins->c64.lp);
w->writeC(ins->c64.bp);
w->writeC(ins->c64.hp);
w->writeC(ins->c64.ch3off);
w->writeS((ins->c64.cut*2047)/100);
w->writeC(ins->c64.dutyIsAbs);
w->writeC(ins->c64.filterIsAbs);
// Amiga
w->writeS(ins->amiga.initSample);
for (int j=0; j<14; j++) { // reserved
w->writeC(0);
}
// standard
w->writeI(ins->std.volMacroLen);
w->writeI(ins->std.arpMacroLen);
w->writeI(ins->std.dutyMacroLen);
w->writeI(ins->std.waveMacroLen);
w->writeI(ins->std.volMacroLoop);
w->writeI(ins->std.arpMacroLoop);
w->writeI(ins->std.dutyMacroLoop);
w->writeI(ins->std.waveMacroLoop);
w->writeC(ins->std.arpMacroMode);
w->writeC(0); // reserved
w->writeC(0);
w->writeC(0);
for (int j=0; j<ins->std.volMacroLen; j++) {
w->writeI(ins->std.volMacro[j]);
}
for (int j=0; j<ins->std.arpMacroLen; j++) {
w->writeI(ins->std.arpMacro[j]);
}
for (int j=0; j<ins->std.dutyMacroLen; j++) {
w->writeI(ins->std.dutyMacro[j]);
}
for (int j=0; j<ins->std.waveMacroLen; j++) {
w->writeI(ins->std.waveMacro[j]);
}
}
/// WAVETABLE
for (int i=0; i<song.waveLen; i++) {
DivWavetable* wave=song.wave[i];
wavePtr[i]=w->tell();
w->write("WAVE",4);
w->writeI(0);
w->writeC(0); // name
w->writeI(wave->len);
w->writeI(wave->min);
w->writeI(wave->max);
for (int j=0; j<wave->len; j++) {
w->writeI(wave->data[j]);
}
}
/// SAMPLE
for (int i=0; i<song.sampleLen; i++) {
DivSample* sample=song.sample[i];
samplePtr[i]=w->tell();
w->write("SMPL",4);
w->writeI(0);
w->writeString(sample->name,false);
w->writeI(sample->length);
w->writeI(sample->rate);
w->writeS(sample->vol);
w->writeS(sample->pitch);
w->writeC(sample->depth);
for (int j=0; j<7; j++) { // reserved
w->writeC(0);
}
w->write(sample->data,sample->length*2);
}
/// PATTERN
for (int i: patsToWrite) {
DivPattern* pat=song.pat[i>>16].getPattern(i&0xffff,false);
patPtr.push_back(w->tell());
w->write("PATR",4);
w->writeI(0);
w->writeS(i>>16);
w->writeS(i&0xffff);
w->writeI(0); // reserved
for (int j=0; j<song.patLen; j++) {
w->writeS(pat->data[j][0]); // note
w->writeS(pat->data[j][1]); // octave
w->writeS(pat->data[j][2]); // instrument
w->writeS(pat->data[j][3]); // volume
w->write(&pat->data[j][4],2*song.pat[i>>16].effectRows*2); // effects
}
}
/// POINTERS
w->seek(ptrSeek,SEEK_SET);
for (int i=0; i<song.insLen; i++) {
w->writeI(insPtr[i]);
}
// wavetable pointers (we'll seek here later)
for (int i=0; i<song.waveLen; i++) {
w->writeI(wavePtr[i]);
}
// sample pointers (we'll seek here later)
for (int i=0; i<song.sampleLen; i++) {
w->writeI(samplePtr[i]);
}
// pattern pointers (we'll seek here later)
for (int i: patPtr) {
w->writeI(i);
}
return w;
}
SafeWriter* DivEngine::saveDMF() {
// fail if more than one system
if (song.systemLen!=1) {

21
src/engine/instrument.h
View file

@ -3,10 +3,11 @@
#include "../ta-utils.h"
enum DivInstrumentType {
DIV_INS_FM,
DIV_INS_STD,
DIV_INS_GB,
DIV_INS_C64
DIV_INS_STD=0,
DIV_INS_FM=1,
DIV_INS_GB=2,
DIV_INS_C64=3,
DIV_INS_AMIGA=4
};
struct DivInstrumentFM {
@ -117,7 +118,7 @@ struct DivInstrumentC64 {
unsigned char a, d, s, r;
unsigned char duty;
unsigned char ringMod, oscSync;
bool toFilter, volIsCutoff, initFilter;
bool toFilter, volIsCutoff, initFilter, dutyIsAbs, filterIsAbs;
unsigned char res, cut;
bool hp, lp, bp, ch3off;
@ -136,6 +137,8 @@ struct DivInstrumentC64 {
toFilter(false),
volIsCutoff(false),
initFilter(false),
dutyIsAbs(false),
filterIsAbs(false),
res(0),
cut(0),
hp(false),
@ -144,6 +147,13 @@ struct DivInstrumentC64 {
ch3off(false) {}
};
struct DivInstrumentAmiga {
short initSample;
DivInstrumentAmiga():
initSample(0) {}
};
struct DivInstrument {
String name;
bool mode;
@ -152,6 +162,7 @@ struct DivInstrument {
DivInstrumentSTD std;
DivInstrumentGB gb;
DivInstrumentC64 c64;
DivInstrumentAmiga amiga;
DivInstrument():
name(""),
mode(false),

6
src/engine/wavetable.h
View file

@ -1,9 +1,11 @@
struct DivWavetable {
int len;
int len, min, max;
int data[32];
DivWavetable():
len(32) {
len(32),
min(0),
max(31) {
for (int i=0; i<32; i++) {
data[i]=i;
}

18
src/gui/gui.cpp
View file

@ -2343,10 +2343,10 @@ void FurnaceGUI::keyUp(SDL_Event& ev) {
void FurnaceGUI::openFileDialog(FurnaceGUIFileDialogs type) {
switch (type) {
case GUI_FILE_OPEN:
ImGuiFileDialog::Instance()->OpenModal("FileDialog","Open File","DefleMask module{.dmf},.*",workingDir);
ImGuiFileDialog::Instance()->OpenModal("FileDialog","Open File","Furnace song{.fur},DefleMask module{.dmf},.*",workingDir);
break;
case GUI_FILE_SAVE:
ImGuiFileDialog::Instance()->OpenModal("FileDialog","Save File","DefleMask module{.dmf}",workingDir);
ImGuiFileDialog::Instance()->OpenModal("FileDialog","Save File","Furnace song{.fur},DefleMask module{.dmf}",workingDir);
break;
case GUI_FILE_SAMPLE_OPEN:
ImGuiFileDialog::Instance()->OpenModal("FileDialog","Load Sample","Wave file{.wav},.*",workingDir);
@ -2366,7 +2366,12 @@ int FurnaceGUI::save(String path) {
lastError=strerror(errno);
return 1;
}
SafeWriter* w=e->saveDMF();
SafeWriter* w;
if (path.rfind(".dmf")==path.size()-4) {
w=e->saveDMF();
} else {
w=e->saveFur();
}
if (w==NULL) {
lastError=e->getLastError();
fclose(outFile);
@ -2785,10 +2790,16 @@ bool FurnaceGUI::loop() {
fileName=ImGuiFileDialog::Instance()->GetFilePathName();
if (fileName!="") {
if (curFileDialog==GUI_FILE_SAVE) {
if (ImGuiFileDialog::Instance()->GetCurrentFilter()=="Furnace song") {
if (fileName.size()<4 || fileName.rfind(".fur")!=fileName.size()-4) {
fileName+=".fur";
}
} else {
if (fileName.size()<4 || fileName.rfind(".dmf")!=fileName.size()-4) {
fileName+=".dmf";
}
}
}
if (curFileDialog==GUI_FILE_SAMPLE_SAVE) {
if (fileName.size()<4 || fileName.rfind(".wav")!=fileName.size()-4) {
fileName+=".wav";
@ -3013,6 +3024,7 @@ bool FurnaceGUI::init() {
ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeDir,"",ImVec4(0.0f,1.0f,1.0f,1.0f),ICON_FA_FOLDER_O);
ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByTypeFile,"",ImVec4(0.7f,0.7f,0.7f,1.0f),ICON_FA_FILE_O);
ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".fur",ImVec4(0.5f,1.0f,0.5f,1.0f),ICON_FA_FILE);
ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".dmf",ImVec4(0.5f,1.0f,0.5f,1.0f),ICON_FA_FILE);
ImGuiFileDialog::Instance()->SetFileStyle(IGFD_FileStyleByExtension,".wav",ImVec4(1.0f,1.0f,0.5f,1.0f),ICON_FA_FILE_AUDIO_O);