comparison stk/include/Stk.h @ 0:4606bd505630 tip

first import

+#ifndef STK_STK_H
+#define STK_STK_H
+
+#include <string>
+#include <cstring>
+#include <iostream>
+#include <sstream>
+#include <vector>
+//#include <cstdlib>
+
+/*! \namespace stk
+    \brief The STK namespace.
+
+    Most Stk classes are defined within the STK namespace.  Exceptions
+    to this include the classes RtAudio and RtMidi.
+*/
+namespace stk {
+
+/***************************************************/
+/*! \class Stk
+    \brief STK base class
+
+    Nearly all STK classes inherit from this class.
+    The global sample rate and rawwave path variables
+    can be queried and modified via Stk.  In addition,
+    this class provides error handling and
+    byte-swapping functions.
+
+    The Synthesis ToolKit in C++ (STK) is a set of open source audio
+    signal processing and algorithmic synthesis classes written in the
+    C++ programming language. STK was designed to facilitate rapid
+    development of music synthesis and audio processing software, with
+    an emphasis on cross-platform functionality, realtime control,
+    ease of use, and educational example code.  STK currently runs
+    with realtime support (audio and MIDI) on Linux, Macintosh OS X,
+    and Windows computer platforms. Generic, non-realtime support has
+    been tested under NeXTStep, Sun, and other platforms and should
+    work with any standard C++ compiler.
+
+    STK WWW site: http://ccrma.stanford.edu/software/stk/
+
+    The Synthesis ToolKit in C++ (STK)
+    Copyright (c) 1995--2014 Perry R. Cook and Gary P. Scavone
+
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation files
+    (the "Software"), to deal in the Software without restriction,
+    including without limitation the rights to use, copy, modify, merge,
+    publish, distribute, sublicense, and/or sell copies of the Software,
+    and to permit persons to whom the Software is furnished to do so,
+    subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    Any person wishing to distribute modifications to the Software is
+    asked to send the modifications to the original developer so that
+    they can be incorporated into the canonical version.  This is,
+    however, not a binding provision of this license.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+/***************************************************/
+
+//#define _STK_DEBUG_
+
+// Most data in STK is passed and calculated with the
+// following user-definable floating-point type.  You
+// can change this to "float" if you prefer or perhaps
+// a "long double" in the future.
+typedef double StkFloat;
+
+//! STK error handling class.
+/*!
+  This is a fairly abstract exception handling class.  There could
+  be sub-classes to take care of more specific error conditions ... or
+  not.
+*/
+class StkError
+{
+public:
+  enum Type {
+    STATUS,
+    WARNING,
+    DEBUG_PRINT,
+    MEMORY_ALLOCATION,
+    MEMORY_ACCESS,
+    FUNCTION_ARGUMENT,
+    FILE_NOT_FOUND,
+    FILE_UNKNOWN_FORMAT,
+    FILE_ERROR,
+    PROCESS_THREAD,
+    PROCESS_SOCKET,
+    PROCESS_SOCKET_IPADDR,
+    AUDIO_SYSTEM,
+    MIDI_SYSTEM,
+    UNSPECIFIED
+  };
+
+protected:
+  std::string message_;
+  Type type_;
+
+public:
+  //! The constructor.
+  StkError(const std::string& message, Type type = StkError::UNSPECIFIED)
+    : message_(message), type_(type) {}
+
+  //! The destructor.
+  virtual ~StkError(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 *getMessageCString(void) { return message_.c_str(); }
+};
+
+
+class Stk
+{
+public:
+
+  typedef unsigned long StkFormat;
+  static const StkFormat STK_SINT8;   /*!< -128 to +127 */
+  static const StkFormat STK_SINT16;  /*!< -32768 to +32767 */
+  static const StkFormat STK_SINT24;  /*!< Lower 3 bytes of 32-bit signed integer. */
+  static const StkFormat STK_SINT32;  /*!< -2147483648 to [phone]. */
+  static const StkFormat STK_FLOAT32; /*!< Normalized between plus/minus 1.0. */
+  static const StkFormat STK_FLOAT64; /*!< Normalized between plus/minus 1.0. */
+
+  //! Static method that returns the current STK sample rate.
+  static StkFloat sampleRate( void ) { return srate_; }
+
+  //! Static method that sets the STK sample rate.
+  /*!
+    The sample rate set using this method is queried by all STK
+    classes that depend on its value.  It is initialized to the
+    default SRATE set in Stk.h.  Many STK classes use the sample rate
+    during instantiation.  Therefore, if you wish to use a rate that
+    is different from the default rate, it is imperative that it be
+    set \e BEFORE STK objects are instantiated.  A few classes that
+    make use of the global STK sample rate are automatically notified
+    when the rate changes so that internal class data can be
+    appropriately updated.  However, this has not been fully
+    implemented.  Specifically, classes that appropriately update
+    their own data when either a setFrequency() or noteOn() function
+    is called do not currently receive the automatic notification of
+    rate change.  If the user wants a specific class instance to
+    ignore such notifications, perhaps in a multi-rate context, the
+    function Stk::ignoreSampleRateChange() should be called.
+  */
+  static void setSampleRate( StkFloat rate );
+
+  //! A function to enable/disable the automatic updating of class data when the STK sample rate changes.
+  /*!
+    This function allows the user to enable or disable class data
+    updates in response to global sample rate changes on a class by
+    class basis.
+  */
+  void ignoreSampleRateChange( bool ignore = true ) { ignoreSampleRateChange_ = ignore; };
+
+  //! Static method that returns the current rawwave path.
+  static std::string rawwavePath(void) { return rawwavepath_; }
+
+  //! Static method that sets the STK rawwave path.
+  static void setRawwavePath( std::string path );
+
+  //! Static method that byte-swaps a 16-bit data type.
+  static void swap16( unsigned char *ptr );
+
+  //! Static method that byte-swaps a 32-bit data type.
+  static void swap32( unsigned char *ptr );
+
+  //! Static method that byte-swaps a 64-bit data type.
+  static void swap64( unsigned char *ptr );
+
+  //! Static cross-platform method to sleep for a number of milliseconds.
+  static void sleep( unsigned long milliseconds );
+
+  //! Static method to check whether a value is within a specified range.
+  static bool inRange( StkFloat value, StkFloat min, StkFloat max ) {
+    if ( value < min ) return false;
+    else if ( value > max ) return false;
+    else return true;
+  }
+
+  //! Static function for error reporting and handling using c-strings.
+  static void handleError( const char *message, StkError::Type type );
+
+  //! Static function for error reporting and handling using c++ strings.
+  static void handleError( std::string message, StkError::Type type );
+
+  //! Toggle display of WARNING and STATUS messages.
+  static void showWarnings( bool status ) { showWarnings_ = status; }
+
+  //! Toggle display of error messages before throwing exceptions.
+  static void printErrors( bool status ) { printErrors_ = status; }
+
+private:
+  static StkFloat srate_;
+  static std::string rawwavepath_;
+  static bool showWarnings_;
+  static bool printErrors_;
+  static std::vector<Stk *> alertList_;
+
+protected:
+
+  static std::ostringstream oStream_;
+  bool ignoreSampleRateChange_;
+
+  //! Default constructor.
+  Stk( void );
+
+  //! Class destructor.
+  virtual ~Stk( void );
+
+  //! This function should be implemented in subclasses that depend on the sample rate.
+  virtual void sampleRateChanged( StkFloat newRate, StkFloat oldRate );
+
+  //! Add class pointer to list for sample rate change notification.
+  void addSampleRateAlert( Stk *ptr );
+
+  //! Remove class pointer from list for sample rate change notification.
+  void removeSampleRateAlert( Stk *ptr );
+
+  //! Internal function for error reporting that assumes message in \c oStream_ variable.
+  void handleError( StkError::Type type ) const;
+};
+
+
+/***************************************************/
+/*! \class StkFrames
+    \brief An STK class to handle vectorized audio data.
+
+    This class can hold single- or multi-channel audio data.  The data
+    type is always StkFloat and the channel format is always
+    interleaved.  In an effort to maintain efficiency, no
+    out-of-bounds checks are performed in this class unless
+    _STK_DEBUG_ is defined.
+
+    Internally, the data is stored in a one-dimensional C array.  An
+    indexing operator is available to set and retrieve data values.
+    Alternately, one can use pointers to access the data, using the
+    index operator to get an address for a particular location in the
+    data:
+
+      StkFloat* ptr = &myStkFrames[0];
+
+    Note that this class can also be used as a table with interpolating
+    lookup.
+
+    Possible future improvements in this class could include functions
+    to convert to and return other data types.
+
+    by Perry R. Cook and Gary P. Scavone, 1995--2014.
+*/
+/***************************************************/
+
+class StkFrames
+{
+public:
+
+  //! The default constructor initializes the frame data structure to size zero.
+  StkFrames( unsigned int nFrames = 0, unsigned int nChannels = 0 );
+
+  //! Overloaded constructor that initializes the frame data to the specified size with \c value.
+  StkFrames( const StkFloat& value, unsigned int nFrames, unsigned int nChannels );
+
+  //! The destructor.
+  ~StkFrames();
+
+  // A copy constructor.
+  StkFrames( const StkFrames& f );
+
+  // Assignment operator that returns a reference to self.
+  StkFrames& operator= ( const StkFrames& f );
+
+  //! Subscript operator that returns a reference to element \c n of self.
+  /*!
+    The result can be used as an lvalue. This reference is valid
+    until the resize function is called or the array is destroyed. The
+    index \c n must be between 0 and size less one.  No range checking
+    is performed unless _STK_DEBUG_ is defined.
+  */
+  StkFloat& operator[] ( size_t n );
+
+  //! Subscript operator that returns the value at element \c n of self.
+  /*!
+    The index \c n must be between 0 and size less one.  No range
+    checking is performed unless _STK_DEBUG_ is defined.
+  */
+  StkFloat operator[] ( size_t n ) const;
+
+  //! Assignment by sum operator into self.
+  /*!
+    The dimensions of the argument are expected to be the same as
+    self.  No range checking is performed unless _STK_DEBUG_ is
+    defined.
+  */
+  void operator+= ( StkFrames& f );
+
+  //! Assignment by product operator into self.
+  /*!
+    The dimensions of the argument are expected to be the same as
+    self.  No range checking is performed unless _STK_DEBUG_ is
+    defined.
+  */
+  void operator*= ( StkFrames& f );
+
+  //! Channel / frame subscript operator that returns a reference.
+  /*!
+    The result can be used as an lvalue. This reference is valid
+    until the resize function is called or the array is destroyed. The
+    \c frame index must be between 0 and frames() - 1.  The \c channel
+    index must be between 0 and channels() - 1.  No range checking is
+    performed unless _STK_DEBUG_ is defined.
+  */
+  StkFloat& operator() ( size_t frame, unsigned int channel );
+
+  //! Channel / frame subscript operator that returns a value.
+  /*!
+    The \c frame index must be between 0 and frames() - 1.  The \c
+    channel index must be between 0 and channels() - 1.  No range checking
+    is performed unless _STK_DEBUG_ is defined.
+  */
+  StkFloat operator() ( size_t frame, unsigned int channel ) const;
+
+  //! Return an interpolated value at the fractional frame index and channel.
+  /*!
+    This function performs linear interpolation.  The \c frame
+    index must be between 0.0 and frames() - 1.  The \c channel index
+    must be between 0 and channels() - 1.  No range checking is
+    performed unless _STK_DEBUG_ is defined.
+  */
+  StkFloat interpolate( StkFloat frame, unsigned int channel = 0 ) const;
+
+  //! Returns the total number of audio samples represented by the object.
+  size_t size() const { return size_; }; 
+
+  //! Returns \e true if the object size is zero and \e false otherwise.
+  bool empty() const;
+
+  //! Resize self to represent the specified number of channels and frames.
+  /*!
+    Changes the size of self based on the number of frames and
+    channels.  No element assignment is performed.  No memory
+    deallocation occurs if the new size is smaller than the previous
+    size.  Further, no new memory is allocated when the new size is
+    smaller or equal to a previously allocated size.
+  */
+  void resize( size_t nFrames, unsigned int nChannels = 1 );
+
+  //! Resize self to represent the specified number of channels and frames and perform element initialization.
+  /*!
+    Changes the size of self based on the number of frames and
+    channels, and assigns \c value to every element.  No memory
+    deallocation occurs if the new size is smaller than the previous
+    size.  Further, no new memory is allocated when the new size is
+    smaller or equal to a previously allocated size.
+  */
+  void resize( size_t nFrames, unsigned int nChannels, StkFloat value );
+
+  //! Return the number of channels represented by the data.
+  unsigned int channels( void ) const { return nChannels_; };
+
+  //! Return the number of sample frames represented by the data.
+  unsigned int frames( void ) const { return (unsigned int)nFrames_; };
+
+  //! Set the sample rate associated with the StkFrames data.
+  /*!
+    By default, this value is set equal to the current STK sample
+    rate at the time of instantiation.
+   */
+  void setDataRate( StkFloat rate ) { dataRate_ = rate; };
+
+  //! Return the sample rate associated with the StkFrames data.
+  /*!
+    By default, this value is set equal to the current STK sample
+    rate at the time of instantiation.
+   */
+  StkFloat dataRate( void ) const { return dataRate_; };
+
+private:
+
+  StkFloat *data_;
+  StkFloat dataRate_;
+  size_t nFrames_;
+  unsigned int nChannels_;
+  size_t size_;
+  size_t bufferSize_;
+
+};
+
+inline bool StkFrames :: empty() const
+{
+  if ( size_ > 0 ) return false;
+  else return true;
+}
+
+inline StkFloat& StkFrames :: operator[] ( size_t n )
+{
+#if defined(_STK_DEBUG_)
+  if ( n >= size_ ) {
+    std::ostringstream error;
+    error << "StkFrames::operator[]: invalid index (" << n << ") value!";
+    Stk::handleError( error.str(), StkError::MEMORY_ACCESS );
+  }
+#endif
+
+  return data_[n];
+}
+
+inline StkFloat StkFrames :: operator[] ( size_t n ) const
+{
+#if defined(_STK_DEBUG_)
+  if ( n >= size_ ) {
+    std::ostringstream error;
+    error << "StkFrames::operator[]: invalid index (" << n << ") value!";
+    Stk::handleError( error.str(), StkError::MEMORY_ACCESS );
+  }
+#endif
+
+  return data_[n];
+}
+
+inline StkFloat& StkFrames :: operator() ( size_t frame, unsigned int channel )
+{
+#if defined(_STK_DEBUG_)
+  if ( frame >= nFrames_ || channel >= nChannels_ ) {
+    std::ostringstream error;
+    error << "StkFrames::operator(): invalid frame (" << frame << ") or channel (" << channel << ") value!";
+    Stk::handleError( error.str(), StkError::MEMORY_ACCESS );
+  }
+#endif
+
+  return data_[ frame * nChannels_ + channel ];
+}
+
+inline StkFloat StkFrames :: operator() ( size_t frame, unsigned int channel ) const
+{
+#if defined(_STK_DEBUG_)
+  if ( frame >= nFrames_ || channel >= nChannels_ ) {
+    std::ostringstream error;
+    error << "StkFrames::operator(): invalid frame (" << frame << ") or channel (" << channel << ") value!";
+    Stk::handleError( error.str(), StkError::MEMORY_ACCESS );
+  }
+#endif
+
+  return data_[ frame * nChannels_ + channel ];
+}
+
+inline void StkFrames :: operator+= ( StkFrames& f )
+{
+#if defined(_STK_DEBUG_)
+  if ( f.frames() != nFrames_ || f.channels() != nChannels_ ) {
+    std::ostringstream error;
+    error << "StkFrames::operator+=: frames argument must be of equal dimensions!";
+    Stk::handleError( error.str(), StkError::MEMORY_ACCESS );
+  }
+#endif
+
+  StkFloat *fptr = &f[0];
+  StkFloat *dptr = data_;
+  for ( unsigned int i=0; i<size_; i++ )
+    *dptr++ += *fptr++;
+}
+
+inline void StkFrames :: operator*= ( StkFrames& f )
+{
+#if defined(_STK_DEBUG_)
+  if ( f.frames() != nFrames_ || f.channels() != nChannels_ ) {
+    std::ostringstream error;
+    error << "StkFrames::operator*=: frames argument must be of equal dimensions!";
+    Stk::handleError( error.str(), StkError::MEMORY_ACCESS );
+  }
+#endif
+
+  StkFloat *fptr = &f[0];
+  StkFloat *dptr = data_;
+  for ( unsigned int i=0; i<size_; i++ )
+    *dptr++ *= *fptr++;
+}
+
+// Here are a few other useful typedefs.
+typedef unsigned short UINT16;
+typedef unsigned int UINT32;
+typedef signed short SINT16;
+typedef signed int SINT32;
+typedef float FLOAT32;
+typedef double FLOAT64;
+
+// The default sampling rate.
+const StkFloat SRATE = 44100.0;
+
+// The default real-time audio input and output buffer size.  If
+// clicks are occuring in the input and/or output sound stream, a
+// larger buffer size may help.  Larger buffer sizes, however, produce
+// more latency.
+const unsigned int RT_BUFFER_SIZE = 512;
+
+// The default rawwave path value is set with the preprocessor
+// definition RAWWAVE_PATH.  This can be specified as an argument to
+// the configure script, in an integrated development environment, or
+// below.  The global STK rawwave path variable can be dynamically set
+// with the Stk::setRawwavePath() function.  This value is
+// concatenated to the beginning of all references to rawwave files in
+// the various STK core classes (ex. Clarinet.cpp).  If you wish to
+// move the rawwaves directory to a different location in your file
+// system, you will need to set this path definition appropriately.
+#if !defined(RAWWAVE_PATH)
+  #define RAWWAVE_PATH "../../rawwaves/"
+#endif
+
+#ifndef PI
+const StkFloat PI           = 3.14159265358979;
+#endif
+const StkFloat TWO_PI       = 2 * PI;
+const StkFloat ONE_OVER_128 = 0.0078125;
+
+#if defined(__WINDOWS_DS__) || defined(__WINDOWS_ASIO__) || defined(__WINDOWS_MM__)
+  #define __OS_WINDOWS__
+  #define __STK_REALTIME__
+#elif defined(__LINUX_OSS__) || defined(__LINUX_ALSA__) || defined(__UNIX_JACK__)
+  #define __OS_LINUX__
+  #define __STK_REALTIME__
+#elif defined(__IRIX_AL__)
+  #define __OS_IRIX__
+#elif defined(__MACOSX_CORE__) || defined(__UNIX_JACK__)
+  #define __OS_MACOSX__
+  #define __STK_REALTIME__
+#endif
+
+} // stk namespace
+
+#endif