ancr_03.cc

这是一个从音频信号里提取特征参量的程序

// file: $isip/class/asr/Anchor/ancr_03.cc
//

// isip include files
//
#include "Anchor.h"

// method: read
//
// arguments:
//  Sof& sof: (input) sof file object
//  long tag: (input) sof object instance tag
//  const String& name: (input) sof object instance name
//
// return: a boolean value indicating status
//
// this method has the object read itself from an Sof file
//
boolean Anchor::read(Sof& sof_a, long tag_a, const String& name_a) {

  // read the instance of the object from the Sof file
  //
  if (!sof_a.find(name_a, tag_a)) {
    return false;
  }
  
  // read the actual data from the sof file
  //
  if (!readData(sof_a)) {
    return false;
  }
  
  // exit gracefully
  //
  return true;  
}

// method: readData
//
// arguments:
//  Sof& sof: (input) sof file object
//  const String& pname: (input) parameter name
//  long size: (input) size in bytes of object (or full_size)
//  boolean param: (input) is the parameter name in the file?
//  boolean nested: (input) are we nested?
//
// return: a boolean value indicating status
//
// this method has the object read itself from an Sof file. it assumes
// that the Sof file is already positioned correctly.
//
boolean Anchor::readData(Sof& sof_a, const String& pname_a,
			  long size_a, boolean param_a,
			  boolean nested_a) {

  // set i/o parameters
  //
  Integral::DEBUG debug_level = Integral::NONE;
  SofParser parser;
  parser.setDebug(debug_level);
    
  // ignore implicit parameter setting
  //

  // clear the object
  //
  this->clear();
  
  // are we nested?
  //
  if (nested_a) {
    parser.setNest();
  }
  
  // load the parse
  //
  if (!parser.load(sof_a, size_a)) {
    return Error::handle(name(), L"readData", Error::READ,
			 __FILE__, __LINE__, Error::WARNING);
  }	    

  // get the id
  //
  if (!id_d.readData(sof_a, PARAM_ID,
			parser.getEntry(sof_a, PARAM_ID),
			false, false)) {
    return Error::handle(name(), L"readData", Error::READ,
			 __FILE__, __LINE__, Error::WARNING);
  }
  
  // get the offset
  //
  if (!offset_d.readData(sof_a, PARAM_OFFSET,
			parser.getEntry(sof_a, PARAM_OFFSET),
			false, false)) {
    return Error::handle(name(), L"readData", Error::READ,
			 __FILE__, __LINE__, Error::WARNING);
  }

  // get the unit
  //
  if (!unit_d.readData(sof_a, PARAM_UNIT,
			parser.getEntry(sof_a, PARAM_UNIT),
			false, false)) {
    return Error::handle(name(), L"readData", Error::READ,
			 __FILE__, __LINE__, Error::WARNING);
  }

  // get the anchored
  //
  if (!anchored_d.readData(sof_a, PARAM_ANCHORED,
			parser.getEntry(sof_a, PARAM_ANCHORED),
			false, false)) {
    return Error::handle(name(), L"readData", Error::READ,
			 __FILE__, __LINE__, Error::WARNING);
  }	          

  // exit gracefully
  //
  return true;
}