example.cc

这是一个从音频信号里提取特征参量的程序

// file: $isip/doc/examples/class/io/io_example_00/example.cc
// version: $Id: example.cc,v 1.3 2000/12/17 17:07:08 hamaker Exp $
//

// isip include files
//
#include <File.h>
#include <Sof.h>
#include <Long.h>
#include <Console.h>

// main program starts here:
//  this program reads long integer entries from a text Sof file and prints
//  each one found
//
int main(int argc, const char **argv) {

  // declare an Sof file object
  //
  Sof sof1;
  
  // open a file in read only mode:
  //  note that the Sof object determines whether the input file is text or
  //  binary automatically. in this example, it happens to be text.
  //
  String filename(L"./file.sof");
  sof1.open(filename, File::READ_ONLY);

  // declare a Long object used to read from the Sof file
  //
  Long j;
  
  // loop through all Long objects in the file, starting with the first
  // and ending when we have visited all objects with the given name
  //  note that the sof1 object is looking up the object based on its name
  //  which, in this case, is "Long". one could uniquely determine each Long
  //  object in the file by assigning each a different name and using that
  //  name to read in the object rather than the default name.
  //
  long tag = sof1.first(j.name());
  while (tag != Sof::NO_TAG) {
    
    // have the object read itself:
    //  this calls the Long::read method. each object in the math library
    //  and above knows how to read itself from an Sof file
    //
    j.read(sof1, tag, j.name());
    
    // output the object to the console
    //
    String output;
    output.assign(j);
    output.insert(L"I found the value " , 0);
    Console::put(output);
    
    // go to the next object
    //
    tag = sof1.next(j.name(), tag);
  }

  // close the input file
  //
  sof1.close();

  // exit gracefully
  //
  Integral::exit();
}