prepare for patchbay effects

src/engine/effectContainer.cpp

@@ -0,0 +1,95 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2023 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 "engine.h"
+#include "effect/dummy.h"
+
+void DivEffectContainer::preAcquire(size_t count) {
+  if (!count) return;
+
+  int inCount=effect->getInputCount();
+
+  if (inLen<count) {
+    for (int i=0; i<inCount; i++) {
+      if (in[i]!=NULL) {
+        delete[] in[i];
+        in[i]=new float[count];
+      }
+    }
+    inLen=count;
+  }
+
+  for (int i=0; i<inCount; i++) {
+    if (in[i]==NULL) {
+      in[i]=new float[count];
+    }
+  }
+}
+
+void DivEffectContainer::acquire(size_t count) {
+  if (!count) return;
+
+  int outCount=effect->getOutputCount();
+
+  if (outLen<count) {
+    for (int i=0; i<outCount; i++) {
+      if (out[i]!=NULL) {
+        delete[] out[i];
+        out[i]=new float[count];
+      }
+    }
+    outLen=count;
+  }
+
+  for (int i=0; i<outCount; i++) {
+    if (out[i]==NULL) {
+      out[i]=new float[count];
+    }
+  }
+
+  effect->acquire(in,out,count);
+}
+
+bool DivEffectContainer::init(DivEffectType effectType, DivEngine* eng, double rate, unsigned short version, const unsigned char* data, size_t len) {
+  switch (effectType) {
+    case DIV_EFFECT_DUMMY:
+    default:
+      effect=new DivEffectDummy;
+  }
+  return effect->init(eng,rate,version,data,len);
+}
+
+void DivEffectContainer::quit() {
+  effect->quit();
+  delete effect;
+  effect=NULL;
+
+  for (int i=0; i<DIV_MAX_OUTPUTS; i++) {
+    if (in[i]) {
+      delete[] in[i];
+      in[i]=NULL;
+    }
+    if (out[i]) {
+      delete[] out[i];
+      out[i]=NULL;
+    }
+  }
+  inLen=0;
+  outLen=0;
+}