1 files changed, 113 insertions, 0 deletions
diff --git a/source/plugin/PluginVst2xLinux.cpp b/source/plugin/PluginVst2xLinux.cpp
new file mode 100644
index 0000000..5543344
--- /dev/null
+++ b/source/plugin/PluginVst2xLinux.cpp
@@ -0,0 +1,113 @@
+//
+// PluginVst2xLinux.c - MrsWatson
+// Created by Nik Reiman on 13 May 13.
+// Copyright (c) 2013 Teragon Audio. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright notice,
+//   this list of conditions and the following disclaimer in the documentation
+//   and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+
+#if LINUX
+#define VST_FORCE_DEPRECATED 0
+#include "aeffectx.h"
+
+extern "C" {
+#include <dlfcn.h>
+#include <stdlib.h>
+#include "base/CharString.h"
+#include "base/LinkedList.h"
+#include "logging/EventLogger.h"
+#include "plugin/PluginVst2xHostCallback.h"
+
+    LinkedList getVst2xPluginLocations(CharString currentDirectory)
+    {
+        LinkedList locations = newLinkedList();
+        CharString locationBuffer;
+        char *vstPathEnv;
+
+        linkedListAppend(locations, currentDirectory);
+
+        locationBuffer = newCharString();
+        snprintf(locationBuffer->data, (size_t)(locationBuffer->capacity), "%s/.vst", getenv("HOME"));
+        linkedListAppend(locations, locationBuffer);
+
+        locationBuffer = newCharString();
+        vstPathEnv = getenv("VST_PATH");
+
+        if (vstPathEnv != NULL) {
+            snprintf(locationBuffer->data, (size_t)(locationBuffer->capacity), "%s", vstPathEnv);
+            linkedListAppend(locations, locationBuffer);
+        } else {
+            freeCharString(locationBuffer);
+        }
+
+        return locations;
+    }
+
+    LibraryHandle getLibraryHandleForPlugin(const CharString pluginAbsolutePath)
+    {
+        void *libraryHandle = dlopen(pluginAbsolutePath->data, RTLD_NOW | RTLD_LOCAL);
+
+        if (libraryHandle == NULL) {
+            logError("Could not open library, %s", dlerror());
+            return NULL;
+        }
+
+        return libraryHandle;
+    }
+
+    AEffect *loadVst2xPlugin(LibraryHandle libraryHandle)
+    {
+        // Somewhat cheap hack to avoid a tricky compiler warning. Casting from void* to a proper function
+        // pointer will cause GCC to warn that "ISO C++ forbids casting between pointer-to-function and
+        // pointer-to-object". Here, we represent both types in a union and use the correct one in the given
+        // context, thus avoiding the need to cast anything.
+        // See also: http://stackoverflow.com/a/2742234/14302
+        union {
+            Vst2xPluginEntryFunc entryPointFuncPtr;
+            void *entryPointVoidPtr;
+        } entryPoint;
+
+        entryPoint.entryPointVoidPtr = dlsym(libraryHandle, "VSTPluginMain");
+
+        if (entryPoint.entryPointVoidPtr == NULL) {
+            entryPoint.entryPointVoidPtr = dlsym(libraryHandle, "main");
+
+            if (entryPoint.entryPointVoidPtr == NULL) {
+                logError("Couldn't get a pointer to plugin's main()");
+                return NULL;
+            }
+        }
+
+        Vst2xPluginEntryFunc mainEntryPoint = entryPoint.entryPointFuncPtr;
+        AEffect *plugin = mainEntryPoint(pluginVst2xHostCallback);
+        return plugin;
+    }
+
+    void closeLibraryHandle(LibraryHandle libraryHandle)
+    {
+        if (dlclose(libraryHandle) != 0) {
+            logWarn("Could not safely close plugin, possible resource leak");
+        }
+    }
+
+} // extern "C"
+#endif