annotate data/midi/rtmidi/RtError.h @ 1247:8f076d02569a piper

Make SVDEBUG always write to a log file -- formerly this was disabled in NDEBUG builds. I think there's little use to that, it just means that we keep adding more cerr debug output because we aren't getting the log we need. And SVDEBUG logging is not usually used in tight loops, I don't think the performance overhead is too serious.

Also update the About box.

/************************************************************************/
/*! \class RtError
    \brief Exception handling class for RtAudio & RtMidi.

    The RtError class is quite simple but it does allow errors to be
    "caught" by RtError::Type. See the RtAudio and RtMidi
    documentation to know which methods can throw an RtError.

*/
/************************************************************************/

#ifndef RTERROR_H
#define RTERROR_H

#include <iostream>
#include <string>

class RtError
{
public:
  //! Defined RtError types.
  enum Type {
    WARNING,           /*!< A non-critical error. */
    DEBUG_WARNING,     /*!< A non-critical error which might be useful for debugging. */
    UNSPECIFIED,       /*!< The default, unspecified error type. */
    NO_DEVICES_FOUND,  /*!< No devices found on system. */
    INVALID_DEVICE,    /*!< An invalid device ID was specified. */
    INVALID_STREAM,    /*!< An invalid stream ID was specified. */
    MEMORY_ERROR,      /*!< An error occured during memory allocation. */
    INVALID_PARAMETER, /*!< An invalid parameter was specified to a function. */
    DRIVER_ERROR,      /*!< A system driver error occured. */
    SYSTEM_ERROR,      /*!< A system error occured. */
    THREAD_ERROR       /*!< A thread error occured. */
  };

protected:
  std::string message_;
  Type type_;

public:
  //! The constructor.
  RtError(const std::string& message, Type type = RtError::UNSPECIFIED) : message_(message), type_(type) {}

  //! The destructor.
  virtual ~RtError(void) {};

  //! Prints thrown error message to stderr.
  virtual void printMessage(void) { std::cerr << '\n' << message_ << "\n\n"; }

  //! Returns the thrown error message type.
  virtual const Type& getType(void) { return type_; }

  //! Returns the thrown error message string.
  virtual const std::string& getMessage(void) { return message_; }

  //! Returns the thrown error message as a C string.
  virtual const char *getMessageString(void) { return message_.c_str(); }
};

#endif