#include "block.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "wavinput.h"


class WavIn :
      public Block
{
  private:
    OutPort < double > * out;

    Parameter < string > * filenamePar;

    Wavinput wavinput;

  public:
    WavIn(const Blockopt & blockopt) : Block(blockopt)
    {}


    void makeParameters()
    {
      filenamePar = new Parameter < string > (this, "filename", "/File/wavout.wav");
    }


    time_t getMaxMtime()
    {
      if (filenamePar->value().size() > 0)
      {
        struct stat statb;
        if (0 == stat(locatefile(filenamePar->value()).c_str(), &statb))
          return statb.st_mtime;
        else
          simerror("error stating " + locatefile(filenamePar->value()));
      }
      return 0;
    }


    void initialize()
    {
      if (filenamePar->value().size() > 0)
      {
        if (!wavinput.open(locatefile(filenamePar->value()).c_str()))
          simerror("error opening " + locatefile(filenamePar->value()));
      }
    }


    void makeIOPorts()
    {
      out = new OutPort < double > (this, "out", 1);
    }


    void go()
    {
      out->write(wavinput.getsample());

      if (wavinput.eof())
        simend("end of file reached");
    }


    void finalize()
    {
      wavinput.close();
    }
};


PUBLISH(WavIn);