comparison examples/vamp-test-plugin/vamp-test-plugin.cpp @ 68:c5a4d871acce

Merge

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+/*
+    Vamp Test Plugin
+    Copyright (c) 2013-2016 Queen Mary, University of London
+
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the names of the Centre for
+    Digital Music and Queen Mary, University of London shall not be
+    used in advertising or otherwise to promote the sale, use or other
+    dealings in this Software without prior written authorization.
+*/
+
+#include "PiperExport.h"
+
+#include "VampTestPlugin.h"
+
+using piper_vamp_js::PiperAdapter;
+using piper_vamp_js::PiperAdapterBase;
+using piper_vamp_js::PiperPluginLibrary;
+
+static std::string soname("vamp-test-plugin");
+
+/*
+   This is an example of a library that exports more than one "plugin"
+   from a single C++ class. The VampTestPlugin class is constructed
+   with an argument that determines whether it is a time- or
+   frequency-domain plugin, and the library offers both.
+
+   Where normally a library that offered two plugins would have two
+   static PiperAdapters specialised with the two plugin classes, here
+   we want two static PiperAdapters specialised with the same class
+   but different constructor arguments. This is one way to do that,
+   taking advantage of the fact that PiperAdapterBase exposes
+   createPlugin as a virtual method.
+
+   Note that a very similar mechanism is used in the standard Vamp
+   version of this plugin library.
+*/
+
+class Adapter : public PiperAdapterBase<VampTestPlugin>
+{
+public:
+    Adapter(bool freq) :
+        PiperAdapterBase<VampTestPlugin>(soname),
+        m_freq(freq) { }
+
+protected:
+    bool m_freq;
+
+    Vamp::Plugin *createPlugin(float inputSampleRate) const {
+        return new VampTestPlugin(inputSampleRate, m_freq);
+    }
+};
+
+static Adapter timeAdapter(false);
+static Adapter freqAdapter(true);
+
+static PiperPluginLibrary library({
+    &timeAdapter,
+    &freqAdapter
+});
+
+PIPER_EXPORT_LIBRARY(library);
+