comparison transform/FeatureWriter.h @ 1013:6370575a812c

Merge

 class FeatureWriter
 {
 public:
     virtual ~FeatureWriter() { }
 
+    virtual string getDescription() const = 0;
+
     struct Parameter { // parameter of the writer, not the plugin
         string name;
         string description;
         bool hasArg;
     };

     protected:
         QString m_trackId;
         QString m_transformId;
     };
 
+    /**
+     * Notify the writer that we are about to start extraction for
+     * input file N of M (where N is 1..M). May be useful when writing
+     * multiple outputs into a single file where some syntactic
+     * element is needed to connect them.
+     */
+    virtual void setNofM(int /* N */, int /* M */) { }
+
     // may throw FailedToOpenFile or other exceptions
-
     virtual void write(QString trackid,
                        const Transform &transform,
                        const Vamp::Plugin::OutputDescriptor &output,
                        const Vamp::Plugin::FeatureList &features,
                        std::string summaryType = "") = 0;