comparison host/simplehost.cpp @ 1:ad9aa1881a70

* Add most basic load-library-and-list-plugins host

+/* -*- 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 Chris Cannam.
+  
+    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 X CONSORTIUM 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.
+*/
+
+#include <iostream>
+
+#include "vamp.h"
+
+#include "PluginHostAdapter.h"
+
+#include "system.h"
+
+/*
+    A very simple Vamp plugin host.  So far all this does is load the
+    plugin library given on the command line and dump out the names of
+    the plugins found in it.
+*/
+
+int main(int argc, char **argv)
+{
+    if (argc != 2) {
+        std::cerr << "Usage: " << argv[0] << " pluginlibrary.so" << std::endl;
+        return 2;
+    }
+
+    std::cerr << std::endl << argv[0] << ": Running..." << std::endl;
+
+    std::string soname = argv[1];
+
+    void *libraryHandle = DLOPEN(soname, RTLD_LAZY);
+
+    if (!libraryHandle) {
+        std::cerr << argv[0] << ": Failed to open plugin library " 
+                  << soname << std::endl;
+        return 1;
+    }
+
+    std::cout << argv[0] << ": Opened plugin library " << soname << std::endl;
+
+    VampGetPluginDescriptorFunction fn = (VampGetPluginDescriptorFunction)
+        DLSYM(libraryHandle, "vampGetPluginDescriptor");
+    
+    if (!fn) {
+        std::cerr << argv[0] << ": No Vamp descriptor function in library "
+                  << soname << std::endl;
+        DLCLOSE(libraryHandle);
+        return 1;
+    }
+
+    std::cout << argv[0] << ": Found plugin descriptor function" << std::endl;
+
+    int index = 0;
+    const VampPluginDescriptor *descriptor = 0;
+
+    while ((descriptor = fn(index))) {
+
+        Vamp::PluginHostAdapter adapter(descriptor, 48000);
+        std::cout << argv[0] << ": Plugin " << (index+1)
+                  << " is \"" << adapter.getName() << "\"" << std::endl;
+        
+        ++index;
+    }
+
+    std::cout << argv[0] << ": Done\n" << std::endl;
+
+    DLCLOSE(libraryHandle);
+    return 0;
+}
+