# HG changeset patch
# User cannam
# Date 1143817229 0
# Node ID ad9aa1881a709132c7f9b328e6edf814ecce1305
# Parent  6479539d1b32056cb2477596121ab072e31e5b42
* Add most basic load-library-and-list-plugins host

diff -r 6479539d1b32 -r ad9aa1881a70 Makefile
--- a/Makefile	Fri Mar 31 14:21:51 2006 +0000
+++ b/Makefile	Fri Mar 31 15:00:29 2006 +0000
@@ -1,12 +1,21 @@
 
 
-all:
+all:	examples/plugins.so host/simplehost test
+
+examples/plugins.so:
 	$(MAKE) -C examples all
 
+host/simplehost:
+	$(MAKE) -C host all
+
+test:
+	$(MAKE) -C host test
+
 clean:
 	$(MAKE) -C examples clean
 
 distclean:
 	$(MAKE) -C examples distclean
+	$(MAKE) -C host distclean
 	rm -f *~ *.bak $(TARGET)
 
diff -r 6479539d1b32 -r ad9aa1881a70 examples/Makefile
--- a/examples/Makefile	Fri Mar 31 14:21:51 2006 +0000
+++ b/examples/Makefile	Fri Mar 31 15:00:29 2006 +0000
@@ -9,10 +9,10 @@
 
 LDFLAGS := -shared -Wl,-Bsymbolic
 
-APIFILES := $(SDKPATH)/PluginAdapter.cpp $(SDKPATH)/RealTime.cpp
+SDKFILES := $(SDKPATH)/PluginAdapter.cpp $(SDKPATH)/RealTime.cpp
 
 plugins.so:	$(OBJECTS)
-	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $(TARGET) $(APIFILES) $(OBJECTS)
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $(TARGET) $(SDKFILES) $(OBJECTS)
 
 all:	$(TARGET)
 
@@ -22,3 +22,5 @@
 distclean:	clean
 	rm -f *~ *.bak $(TARGET)
 
+ZeroCrossing.o:	ZeroCrossing.cpp ../vamp/vamp.h ../sdk/PluginAdapter.h ../sdk/PluginAdapter.cpp ../sdk/RealTime.h ../sdk/RealTime.cpp ../sdk/Plugin.h ../sdk/PluginBase.h
+SpectralCentroid.o:	SpectralCentroid.cpp ../vamp/vamp.h ../sdk/PluginAdapter.h ../sdk/PluginAdapter.cpp ../sdk/RealTime.h ../sdk/RealTime.cpp ../sdk/Plugin.h ../sdk/PluginBase.h
diff -r 6479539d1b32 -r ad9aa1881a70 host/Makefile
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/host/Makefile	Fri Mar 31 15:00:29 2006 +0000
@@ -0,0 +1,24 @@
+
+SDKPATH := ../sdk
+APIPATH := ../vamp
+
+CXXFLAGS := $(CXXFLAGS) -O2 -Wall -I$(SDKPATH) -I$(APIPATH)
+LIBS := $(LIBS) -ldl
+
+SDKFILES := $(SDKPATH)/PluginHostAdapter.cpp $(SDKPATH)/RealTime.cpp
+
+simplehost:	simplehost.o
+	$(CXX) $(CXXFLAGS) -o simplehost $(SDKFILES) simplehost.o $(LIBS)
+
+all: 	simplehost
+
+test:
+	simplehost ../examples/plugins.so
+
+clean:
+	rm -f simplehost.o
+
+distclean:	clean
+	rm -f simplehost *~ *.bak
+
+simplehost.o:	simplehost.cpp system.h ../vamp/vamp.h ../sdk/PluginHostAdapter.h ../sdk/PluginHostAdapter.cpp ../sdk/RealTime.h ../sdk/RealTime.cpp ../sdk/Plugin.h ../sdk/PluginBase.h
diff -r 6479539d1b32 -r ad9aa1881a70 host/simplehost.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/host/simplehost.cpp	Fri Mar 31 15:00:29 2006 +0000
@@ -0,0 +1,101 @@
+/* -*- 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;
+}
+
diff -r 6479539d1b32 -r ad9aa1881a70 host/system.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/host/system.h	Fri Mar 31 15:00:29 2006 +0000
@@ -0,0 +1,65 @@
+/* -*- 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.
+*/
+
+#ifndef _SYSTEM_H_
+#define _SYSTEM_H_
+
+#ifdef _WIN32
+
+#include <windows.h>
+
+#define DLOPEN(a,b)  LoadLibrary((a).c_str())
+#define DLSYM(a,b)   GetProcAddress((HINSTANCE)(a),(b))
+#define DLCLOSE(a)   FreeLibrary((HINSTANCE)(a))
+#define DLERROR()    ""
+
+#define PLUGIN_GLOB  "*.dll"
+
+#else
+
+#include <dlfcn.h>
+
+#define DLOPEN(a,b)  dlopen((a).c_str(),(b))
+#define DLSYM(a,b)   dlsym((a),(b))
+#define DLCLOSE(a)   dlclose((a))
+#define DLERROR()    dlerror()
+
+#define PLUGIN_GLOB  "*.so"
+
+#endif
+
+#endif
+
diff -r 6479539d1b32 -r ad9aa1881a70 sdk/PluginHostAdapter.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sdk/PluginHostAdapter.cpp	Fri Mar 31 15:00:29 2006 +0000
@@ -0,0 +1,314 @@
+/* -*- 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 "PluginHostAdapter.h"
+
+namespace Vamp
+{
+
+PluginHostAdapter::PluginHostAdapter(const VampPluginDescriptor *descriptor,
+                                     float inputSampleRate) :
+    Plugin(inputSampleRate),
+    m_descriptor(descriptor)
+{
+    std::cerr << "PluginHostAdapter::PluginHostAdapter (plugin = " << descriptor->name << ")" << std::endl;
+    m_handle = m_descriptor->instantiate(m_descriptor, inputSampleRate);
+}
+
+PluginHostAdapter::~PluginHostAdapter()
+{
+    if (m_handle) m_descriptor->cleanup(m_handle);
+}
+
+bool
+PluginHostAdapter::initialise(size_t channels,
+                              size_t stepSize,
+                              size_t blockSize)
+{
+    if (!m_handle) return false;
+    return m_descriptor->initialise(m_handle, channels, stepSize, blockSize) ?
+        true : false;
+}
+
+void
+PluginHostAdapter::reset()
+{
+    if (!m_handle) return;
+    m_descriptor->reset(m_handle);
+}
+
+PluginHostAdapter::InputDomain
+PluginHostAdapter::getInputDomain() const
+{
+    if (m_descriptor->inputDomain == vampFrequencyDomain) {
+        return FrequencyDomain;
+    } else {
+        return TimeDomain;
+    }
+}
+
+std::string
+PluginHostAdapter::getName() const
+{
+    return m_descriptor->name;
+}
+
+std::string
+PluginHostAdapter::getDescription() const
+{
+    return m_descriptor->description;
+}
+
+std::string
+PluginHostAdapter::getMaker() const
+{
+    return m_descriptor->maker;
+}
+
+int
+PluginHostAdapter::getPluginVersion() const
+{
+    return m_descriptor->pluginVersion;
+}
+
+std::string
+PluginHostAdapter::getCopyright() const
+{
+    return m_descriptor->copyright;
+}
+
+PluginHostAdapter::ParameterList
+PluginHostAdapter::getParameterDescriptors() const
+{
+    ParameterList list;
+    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
+        const VampParameterDescriptor *spd = m_descriptor->parameters[i];
+        ParameterDescriptor pd;
+        pd.name = spd->name;
+        pd.description = spd->description;
+        pd.unit = spd->unit;
+        pd.minValue = spd->minValue;
+        pd.maxValue = spd->maxValue;
+        pd.defaultValue = spd->defaultValue;
+        pd.isQuantized = spd->isQuantized;
+        pd.quantizeStep = spd->quantizeStep;
+        list.push_back(pd);
+    }
+    return list;
+}
+
+float
+PluginHostAdapter::getParameter(std::string param) const
+{
+    if (!m_handle) return 0.0;
+
+    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
+        if (param == m_descriptor->parameters[i]->name) {
+            return m_descriptor->getParameter(m_handle, i);
+        }
+    }
+
+    return 0.0;
+}
+
+void
+PluginHostAdapter::setParameter(std::string param, 
+                                float value)
+{
+    if (!m_handle) return;
+
+    for (unsigned int i = 0; i < m_descriptor->parameterCount; ++i) {
+        if (param == m_descriptor->parameters[i]->name) {
+            m_descriptor->setParameter(m_handle, i, value);
+            return;
+        }
+    }
+}
+
+PluginHostAdapter::ProgramList
+PluginHostAdapter::getPrograms() const
+{
+    ProgramList list;
+    
+    for (unsigned int i = 0; i < m_descriptor->programCount; ++i) {
+        list.push_back(m_descriptor->programs[i]);
+    }
+    
+    return list;
+}
+
+std::string
+PluginHostAdapter::getCurrentProgram() const
+{
+    if (!m_handle) return "";
+
+    int pn = m_descriptor->getCurrentProgram(m_handle);
+    return m_descriptor->programs[pn];
+}
+
+void
+PluginHostAdapter::selectProgram(std::string program)
+{
+    if (!m_handle) return;
+
+    for (unsigned int i = 0; i < m_descriptor->programCount; ++i) {
+        if (program == m_descriptor->programs[i]) {
+            m_descriptor->selectProgram(m_handle, i);
+            return;
+        }
+    }
+}
+
+size_t
+PluginHostAdapter::getPreferredStepSize() const
+{
+    if (!m_handle) return 0;
+    return m_descriptor->getPreferredStepSize(m_handle);
+}
+
+size_t
+PluginHostAdapter::getPreferredBlockSize() const
+{
+    if (!m_handle) return 0;
+    return m_descriptor->getPreferredBlockSize(m_handle);
+}
+
+PluginHostAdapter::OutputList
+PluginHostAdapter::getOutputDescriptors() const
+{
+    OutputList list;
+    if (!m_handle) return list;
+
+    unsigned int count = m_descriptor->getOutputCount(m_handle);
+
+    for (unsigned int i = 0; i < count; ++i) {
+        VampOutputDescriptor *sd = m_descriptor->getOutputDescriptor(m_handle, i);
+        OutputDescriptor d;
+        d.name = sd->name;
+        d.description = sd->description;
+        d.unit = sd->unit;
+        d.hasFixedValueCount = sd->hasFixedValueCount;
+        d.valueCount = sd->valueCount;
+        for (unsigned int j = 0; j < sd->valueCount; ++j) {
+            d.valueNames.push_back(sd->valueNames[i] ? sd->valueNames[i] : "");
+        }
+        d.hasKnownExtents = sd->hasKnownExtents;
+        d.minValue = sd->minValue;
+        d.maxValue = sd->maxValue;
+        d.isQuantized = sd->isQuantized;
+        d.quantizeStep = sd->quantizeStep;
+
+        switch (sd->sampleType) {
+        case vampOneSamplePerStep:
+            d.sampleType = OutputDescriptor::OneSamplePerStep; break;
+        case vampFixedSampleRate:
+            d.sampleType = OutputDescriptor::FixedSampleRate; break;
+        case vampVariableSampleRate:
+            d.sampleType = OutputDescriptor::VariableSampleRate; break;
+        }
+
+        d.sampleRate = sd->sampleRate;
+
+        list.push_back(d);
+
+        m_descriptor->releaseOutputDescriptor(sd);
+    }
+
+    return list;
+}
+
+PluginHostAdapter::FeatureSet
+PluginHostAdapter::process(float **inputBuffers,
+                                            RealTime timestamp)
+{
+    FeatureSet fs;
+    if (!m_handle) return fs;
+
+    int sec = timestamp.sec;
+    int nsec = timestamp.nsec;
+    
+    VampFeatureList **features = m_descriptor->process(m_handle,
+                                                      inputBuffers,
+                                                      sec, nsec);
+    
+    convertFeatures(features, fs);
+    m_descriptor->releaseFeatureSet(features);
+    return fs;
+}
+
+PluginHostAdapter::FeatureSet
+PluginHostAdapter::getRemainingFeatures()
+{
+    FeatureSet fs;
+    if (!m_handle) return fs;
+    
+    VampFeatureList **features = m_descriptor->getRemainingFeatures(m_handle); 
+
+    convertFeatures(features, fs);
+    m_descriptor->releaseFeatureSet(features);
+    return fs;
+}
+
+void
+PluginHostAdapter::convertFeatures(VampFeatureList **features,
+                                   FeatureSet &fs)
+{
+    for (unsigned int i = 0; features[i]; ++i) {
+        
+        VampFeatureList &list = *features[i];
+
+        if (list.featureCount > 0) {
+
+            for (unsigned int j = 0; j < list.featureCount; ++j) {
+                
+                Feature feature;
+                feature.hasTimestamp = list.features[j].hasTimestamp;
+                feature.timestamp = RealTime(list.features[j].sec,
+                                             list.features[j].nsec);
+
+                for (unsigned int k = 0; k < list.features[j].valueCount; ++k) {
+                    feature.values.push_back(list.features[j].values[k]);
+                }
+                
+                feature.label = list.features[j].label;
+
+                fs[i].push_back(feature);
+            }
+        }
+    }
+}
+
+}
diff -r 6479539d1b32 -r ad9aa1881a70 sdk/PluginHostAdapter.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sdk/PluginHostAdapter.h	Fri Mar 31 15:00:29 2006 +0000
@@ -0,0 +1,92 @@
+/* -*- 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.
+*/
+
+#ifndef _PLUGIN_HOST_ADAPTER_H_
+#define _PLUGIN_HOST_ADAPTER_H_
+
+#include "vamp.h"
+
+#include "Plugin.h"
+
+namespace Vamp {
+
+class PluginHostAdapter : public Plugin
+{
+public:
+    PluginHostAdapter(const VampPluginDescriptor *descriptor,
+                      float inputSampleRate);
+    virtual ~PluginHostAdapter();
+
+    bool initialise(size_t channels, size_t stepSize, size_t blockSize);
+    void reset();
+
+    InputDomain getInputDomain() const;
+
+    std::string getName() const;
+    std::string getDescription() const;
+    std::string getMaker() const;
+    int getPluginVersion() const;
+    std::string getCopyright() const;
+
+    ParameterList getParameterDescriptors() const;
+    float getParameter(std::string) const;
+    void setParameter(std::string, float);
+
+    ProgramList getPrograms() const;
+    std::string getCurrentProgram() const;
+    void selectProgram(std::string);
+
+    size_t getPreferredStepSize() const;
+    size_t getPreferredBlockSize() const;
+
+    OutputList getOutputDescriptors() const;
+
+    FeatureSet process(float **inputBuffers, RealTime timestamp);
+
+    FeatureSet getRemainingFeatures();
+
+protected:
+    void convertFeatures(VampFeatureList **, FeatureSet &);
+
+    const VampPluginDescriptor *m_descriptor;
+    VampPluginHandle m_handle;
+};
+
+}
+
+#endif
+
+