prepare.

CMakeLists.txt

@@ -672,10 +672,12 @@ src/engine/fileOps/dmf.cpp
 src/engine/fileOps/fc.cpp
 src/engine/fileOps/ftm.cpp
 src/engine/fileOps/fur.cpp
+src/engine/fileOps/it.cpp
 src/engine/fileOps/mod.cpp
 src/engine/fileOps/s3m.cpp
 src/engine/fileOps/text.cpp
 src/engine/fileOps/tfm.cpp
+src/engine/fileOps/xm.cpp
 
 src/engine/blip_buf.c
 src/engine/brrUtils.c

src/engine/engine.h

@@ -61,6 +61,9 @@ class DivWorkPool;
 #define DIV_VERSION_FC 0xff02
 #define DIV_VERSION_S3M 0xff03
 #define DIV_VERSION_FTM 0xff04
+#define DIV_VERSION_TFE 0xff05
+#define DIV_VERSION_XM 0xff06
+#define DIV_VERSION_IT 0xff07
 
 enum DivStatusView {
   DIV_STATUS_NOTHING=0,

src/engine/fileOps/fileOpsCommon.cpp

@@ -154,9 +154,13 @@ bool DivEngine::load(unsigned char* f, size_t slen, const char* nameHint) {
     return loadFC(file,len);
   } else if (memcmp(file,DIV_TFM_MAGIC,8)==0) {
     return loadTFMv2(file,len);
+  } else if (memcmp(file,DIV_IT_MAGIC,4)==0) {
+    return loadIT(file,len);
   } else if (len>=48) {
     if (memcmp(&file[0x2c],DIV_S3M_MAGIC,4)==0) {
       return loadS3M(file,len);
+    } else if (memcmp(file,DIV_XM_MAGIC,17)==0) {
+      return loadXM(file,len);
     }
   }
 

src/engine/fileOps/fileOpsCommon.h

@@ -53,7 +53,7 @@ struct NotZlibException {
 #define DIV_FC13_MAGIC "SMOD"
 #define DIV_FC14_MAGIC "FC14"
 #define DIV_S3M_MAGIC "SCRM"
-#define DIV_XM_MAGIC "Extended Module:"
+#define DIV_XM_MAGIC "Extended Module: "
 #define DIV_IT_MAGIC "IMPM"
 #define DIV_TFM_MAGIC "TFMfmtV2"
 

src/engine/fileOps/it.cpp

@@ -0,0 +1,83 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2024 tildearrow and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "fileOpsCommon.h"
+
+bool DivEngine::loadIT(unsigned char* file, size_t len) {
+  struct InvalidHeaderException {};
+  bool success=false;
+  char magic[4];
+  SafeReader reader=SafeReader(file,len);
+  warnings="";
+
+  try {
+    DivSong ds;
+    ds.version=DIV_VERSION_XM;
+    //ds.linearPitch=0;
+    //ds.pitchMacroIsLinear=false;
+    ds.noSlidesOnFirstTick=true;
+    ds.rowResetsArpPos=true;
+    ds.ignoreJumpAtEnd=false;
+    ds.pitchSlideSpeed=12;
+
+    logV("Impulse Tracker module");
+
+    // load here
+    if (!reader.seek(0,SEEK_SET)) {
+      logE("premature end of file!");
+      lastError="incomplete file";
+      delete[] file;
+      return false;
+    }
+    reader.read(magic,4);
+
+    if (memcmp(magic,DIV_IT_MAGIC,4)!=0) {
+      logW("the magic isn't complete");
+      throw EndOfFileException(&reader,reader.tell());
+    }
+
+    ds.name=reader.readString(26);
+
+    if (active) quitDispatch();
+    BUSY_BEGIN_SOFT;
+    saveLock.lock();
+    song.unload();
+    song=ds;
+    changeSong(0);
+    recalcChans();
+    saveLock.unlock();
+    BUSY_END;
+    if (active) {
+      initDispatch();
+      BUSY_BEGIN;
+      renderSamples();
+      reset();
+      BUSY_END;
+    }
+    success=true;
+  } catch (EndOfFileException& e) {
+    //logE("premature end of file!");
+    lastError="incomplete file";
+  } catch (InvalidHeaderException& e) {
+    //logE("invalid header!");
+    lastError="invalid header!";
+  }
+  return success;
+}
+

src/engine/fileOps/tfm.cpp

@@ -521,6 +521,7 @@ bool DivEngine::loadTFMv1(unsigned char* file, size_t len) {
 
   try {
     DivSong ds;
+    ds.version=DIV_VERSION_TFE;
     ds.systemName="Sega Genesis/Mega Drive or TurboSound FM";
     ds.subsong[0]->hz=50;
     ds.systemLen=1;
@@ -712,6 +713,7 @@ bool DivEngine::loadTFMv2(unsigned char* file, size_t len) {
 
   try {
     DivSong ds;
+    ds.version=DIV_VERSION_TFE;
     ds.systemName="Sega Genesis/Mega Drive or TurboSound FM";
     ds.subsong[0]->hz=50;
     ds.systemLen=1;

src/engine/fileOps/xm.cpp

@@ -0,0 +1,86 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2024 tildearrow and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "fileOpsCommon.h"
+
+bool DivEngine::loadXM(unsigned char* file, size_t len) {
+  struct InvalidHeaderException {};
+  bool success=false;
+  char magic[32];
+  SafeReader reader=SafeReader(file,len);
+  warnings="";
+
+  try {
+    DivSong ds;
+    ds.version=DIV_VERSION_XM;
+    //ds.linearPitch=0;
+    //ds.pitchMacroIsLinear=false;
+    ds.noSlidesOnFirstTick=true;
+    ds.rowResetsArpPos=true;
+    ds.ignoreJumpAtEnd=false;
+    ds.pitchSlideSpeed=12;
+
+    logV("Extended Module");
+
+    // load here
+    if (!reader.seek(0,SEEK_SET)) {
+      logE("premature end of file!");
+      lastError="incomplete file";
+      delete[] file;
+      return false;
+    }
+    reader.read(magic,17);
+
+    if (memcmp(magic,DIV_XM_MAGIC,17)!=0) {
+      logW("invalid magic");
+      throw EndOfFileException(&reader,reader.tell());
+    }
+
+    ds.name=reader.readString(20);
+
+    // 0x1a
+    reader.readC();
+
+    if (active) quitDispatch();
+    BUSY_BEGIN_SOFT;
+    saveLock.lock();
+    song.unload();
+    song=ds;
+    changeSong(0);
+    recalcChans();
+    saveLock.unlock();
+    BUSY_END;
+    if (active) {
+      initDispatch();
+      BUSY_BEGIN;
+      renderSamples();
+      reset();
+      BUSY_END;
+    }
+    success=true;
+  } catch (EndOfFileException& e) {
+    //logE("premature end of file!");
+    lastError="incomplete file";
+  } catch (InvalidHeaderException& e) {
+    //logE("invalid header!");
+    lastError="invalid header!";
+  }
+  return success;
+}
+

src/gui/gui.cpp

@@ -1669,7 +1669,7 @@ void FurnaceGUI::openFileDialog(FurnaceGUIFileDialogs type) {
       if (!dirExists(workingDirSong)) workingDirSong=getHomeDir();
       hasOpened=fileDialog->openLoad(
         _("Open File"),
-        {_("compatible files"), "*.fur *.dmf *.mod *.s3m *.fc13 *.fc14 *.smod *.fc *.ftm *.0cc *.dnm *.eft *.fub *.tfe",
+        {_("compatible files"), "*.fur *.dmf *.mod *.s3m *.xm *.it *.fc13 *.fc14 *.smod *.fc *.ftm *.0cc *.dnm *.eft *.fub *.tfe",
          _("all files"), "*"},
         workingDirSong,
         dpiScale