comparison vamp-hostsdk/PluginConfiguration.h @ 423:8c45dee08a95 vampipe

Add PluginConfiguration, PluginStaticData, and LoadRequest structures, and use them in PluginLoader

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Vamp
+
+    An API for audio analysis and feature extraction plugins.
+
+    Centre for Digital Music, Queen Mary, University of London.
+    Copyright 2006-2016 Chris Cannam and QMUL.
+  
+    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 AUTHORS 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; Queen Mary, University of London; and Chris Cannam
+    shall not be used in advertising or otherwise to promote the sale,
+    use or other dealings in this Software without prior written
+    authorization.
+*/
+
+#ifndef VAMP_PLUGIN_CONFIGURATION_H
+#define VAMP_PLUGIN_CONFIGURATION_H
+
+#include "hostguard.h"
+
+#include <map>
+#include <string>
+
+_VAMP_SDK_HOSTSPACE_BEGIN(PluginConfiguration.h)
+
+namespace Vamp {
+
+namespace HostExt {
+
+/**
+ * \class PluginConfiguration PluginConfiguration.h <vamp-hostsdk/PluginConfiguration.h>
+ * 
+ * Vamp::HostExt::PluginConfiguration is a structure bundling together
+ * data that affect the configuration of a plugin: parameter values,
+ * programs, and initialisation settings. Although an interactive Vamp
+ * plugin host may configure a plugin in stages, for example to take
+ * into account that a plugin's preferred step and block size may
+ * change when its parameters are changed, a batch host or a host
+ * supporting store and recall of configurations may wish to keep all
+ * configuration settings together.
+ *
+ * \note This class was introduced in version 2.7 of the Vamp plugin
+ * SDK.
+ */
+struct PluginConfiguration
+{
+    PluginConfiguration() : // invalid configuration by default
+	channelCount(0), stepSize(0), blockSize(0) { }
+	
+    int channelCount;
+    int stepSize;
+    int blockSize;
+    typedef std::map<std::string, float> ParameterMap;
+    ParameterMap parameterValues;
+    std::string currentProgram;
+
+    static PluginConfiguration
+    fromPlugin(Plugin *p,
+	       int channelCount,
+	       int stepSize,
+	       int blockSize) {
+	
+	PluginConfiguration c;
+	
+	c.channelCount = channelCount;
+	c.stepSize = stepSize;
+	c.blockSize = blockSize;
+
+	PluginBase::ParameterList params = p->getParameterDescriptors();
+	for (PluginBase::ParameterList::const_iterator i = params.begin();
+	     i != params.end(); ++i) {
+	    std::string pid = i->identifier;
+	    c.parameterValues[pid] = p->getParameter(pid);
+	}
+	
+	if (!p->getPrograms().empty()) {
+	    c.currentProgram = p->getCurrentProgram();
+	}
+
+	return c;
+    }
+};
+
+}
+
+}
+
+_VAMP_SDK_HOSTSPACE_END(PluginConfiguration.h)
+
+#endif