trunk/src/Akai.h

/*
  libakai - C++ cross-platform akai sample disk reader
  Copyright (C) 2002-2003 Sébastien Métrot

  Linux port by Christian Schoenebeck <cuse@users.sourceforge.net> 2003-2014
  
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
// Akai.h
// Info for the akai disk & file format found here:
// http://www.abel.co.uk/~maxim/akai/akaiinfo.htm
//
#ifndef __akai_h__
#define __akai_h__

// for use with autoconf
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#if !defined(_CARBON_) && !defined(_WIN32_)
# define LINUX 1
#endif

#include <stdint.h>
#include <string>
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <list>
#include <fstream>

#if LINUX
# include <sys/types.h>
# include <sys/stat.h>
# include <sys/fcntl.h>
# include <sys/ioctl.h>
# include <unistd.h>
# include <linux/cdrom.h>
#endif

typedef std::string String;
typedef std::streampos streampos;

class AkaiVolume;
class AkaiPartition;
class AkaiDisk;


/* current state of the Akai stream */
typedef enum {
  akai_stream_ready       = 0,
  akai_stream_end_reached = 1,
  akai_stream_closed      = 2
} akai_stream_state_t;

/* stream position dependent to these relations */
typedef enum {
  akai_stream_start  = 0,
  akai_stream_curpos = 1,
  akai_stream_end    = 2
} akai_stream_whence_t;


/* We need to cache IO access to reduce IO system calls which else would slow
   down things tremendously. For that we differ between the following two
   cache sizes:

   CD_FRAMESIZE       for CDROM access
   DISK_CLUSTER_SIZE  for normal IO access (e.g. from hard disk)

   Not yet sure if these are the optimum sizes.
 */

#ifndef CD_FRAMESIZE
#  define CD_FRAMESIZE 2048 /* frame size for Yellow Book, Form 1 */
#endif

#define DISK_CLUSTER_SIZE 61440 /* 60 kB */

typedef std::string String;

/** @brief Accessing AKAI image either from file or a drive (i.e. CDROM).
 *
 * This class implements a hardware abstraction layer, providing an abstract
 * streaming API to read from AKAI data images, no matter if the AKAI image is
 * already available as image file or whether the respective hardware drive
 * needs to be accessed directly (i.e. CDROM drive, ZIP drive). So the main task
 * of this class is isolating operating system dependent file/hardware access.
 */
class DiskImage
{
public:
  DiskImage(const char* path); ///< Open an image from a file.
  DiskImage(int disk); ///< Open an image from a device number (0='a:', 1='b:', etc...).

  bool WriteImage(const char* path); ///< Extract Akai data track and write it into a regular file.

  virtual ~DiskImage();

  virtual akai_stream_state_t GetState() const;
  virtual int GetPos() const;
  virtual int SetPos(int Where, akai_stream_whence_t Whence = akai_stream_start);

  virtual int Available (uint WordSize = 1);
  virtual int Read (void* pData, uint WordCount, uint WordSize); ///< Returns number of successfully read words.

  void     ReadInt8(uint8_t* pData, uint WordCount);
  void     ReadInt16(uint16_t* pData, uint WordCount);
  void     ReadInt32(uint32_t* pData, uint WordCount);
  int      ReadInt8(uint8_t* pData);    ///< Returns number of successfully read 8 Bit words.
  int      ReadInt16(uint16_t* pData);  ///< Returns number of successfully read 16 Bit words.
  int      ReadInt32(uint32_t* pData);  ///< Returns number of successfully read 32 Bit words.
  uint8_t  ReadInt8();
  uint16_t ReadInt16();
  uint32_t ReadInt32();


  virtual uint GetError() const
  {
    return 0;
  }

  /*virtual const nglChar* GetErrorStr(uint err) const
  {
    return _T("No Error");
  }*/

protected:
#ifdef _WIN32_
  HANDLE mFile;
#elif defined _CARBON_ || LINUX
  int mFile;
#endif
  bool mRegularFile;
  int mPos;
  int mCluster;
  int mClusterSize;
  int mSize; /* in bytes */
#if LINUX
  /* start and end of the data track we chose (if we're reading from CDROM) */
  int mStartFrame;
  int mEndFrame;
#endif // LINUX
  char* mpCache;

  void OpenStream(const char* path);
  inline void swapBytes_16(void* Word);
  inline void swapBytes_32(void* Word);

private:
  void Init();
};


class Resource
{
public:
  Resource()
  {
    mRefCount = 0;
  }
  virtual ~Resource()
  {
    //NGL_ASSERT(mRefCount==0);
  }
  uint Acquire()
  {
    return mRefCount++;
  }
  uint Release()
  {
    uint res;
    //NGL_ASSERT(mRefCount!=0);
    mRefCount--;
    res = mRefCount;
    if (!mRefCount)
      delete this;
    return res;
  }
private:
  uint mRefCount;
};

class AkaiDirEntry
{
public:
  String mName;
  uint16_t mType;
  int mSize;
  uint16_t mStart;
  int mIndex;
};

// AkaiDiskElement:
class AkaiDiskElement : public Resource
{
public:
  AkaiDiskElement(uint Offset = 0)
  {
    mOffset = Offset;
  }

  uint GetOffset()
  {
    return mOffset;
  }

protected:
  void SetOffset(uint Offset)
  {
    mOffset = Offset;
  }

  void AkaiToAscii(char * buffer, int length);
  int ReadFAT(DiskImage* pDisk, AkaiPartition* pPartition, int block);
  bool ReadDirEntry(DiskImage* pDisk, AkaiPartition* pPartition, AkaiDirEntry& rEntry, int block, int pos);
private:
  uint mOffset;
};

class AkaiSampleLoop
{
public:
  //    4     unsigned    Loop 1 marker
  uint32_t mMarker;
  //    2     unsigned    Loop 1 fine length   (65536ths)
  uint16_t mFineLength;
  //    4     unsigned    Loop 1 coarse length (words)
  uint32_t mCoarseLength;
  //    2     unsigned    Loop 1 time          (msec. or 9999=infinite)
  uint16_t mTime;
private:
  friend class AkaiSample;
  bool Load(DiskImage* pDisk);
};

class AkaiSample : public AkaiDiskElement
{
public:
  AkaiDirEntry GetDirEntry();
  // Length   Format      Description
  // --------------------------------------------------------------
  //    1                 3
  //    1                 Not important: 0 for 22050Hz, 1 for 44100Hz
  //    1     unsigned    MIDI root note (C3=60)
  uint8_t mMidiRootNote;
  //   12     AKAII       Filename
  String mName;
  //    1                 128
  //    1     unsigned    Number of active loops
  uint8_t mActiveLoops;
  //    1     unsigned char       First active loop (0 for none)
  uint8_t mFirstActiveLoop;
  //    1                         0
  //    1     unsigned    Loop mode: 0=in release 1=until release
  //                                 2=none       3=play to end
  uint8_t mLoopMode;
  //    1     signed      Cents tune -50...+50
  int8_t mTuneCents;
  //    1     signed      Semi tune  -50...+50
  int8_t mTuneSemitones;
  //    4                 0,8,2,0
  //
  //    4     unsigned    Number of sample words
  uint32_t mNumberOfSamples;
  //    4     unsigned    Start marker
  uint32_t mStartMarker;
  //    4     unsigned    End marker
  uint32_t mEndMarker;
  //
  //    4     unsigned    Loop 1 marker
  //    2     unsigned    Loop 1 fine length   (65536ths)
  //    4     unsigned    Loop 1 coarse length (words)
  //    2     unsigned    Loop 1 time          (msec. or 9999=infinite)
  //
  //   84     [as above]  Loops 2 to 8
  //
  AkaiSampleLoop mLoops[8];
  //    4                 0,0,255,255
  //    2     unsigned    Sampling frequency
  uint16_t mSamplingFrequency;
  //    1     signed char         Loop tune offset -50...+50
  int8_t mLoopTuneOffset;
  //   10                 0,0,0...

  int16_t* mpSamples;

  bool LoadSampleData(); ///< Load sample into RAM
  void ReleaseSampleData(); ///< release the samples once you used them if you don't want to be bothered to
  int SetPos(int Where, akai_stream_whence_t Whence = akai_stream_start); ///< Use this method and Read() if you don't want to load the sample into RAM, thus for disk streaming.
  int Read(void* pBuffer, uint SampleCount); ///< Use this method and SetPos() if you don't want to load the sample into RAM, thus for disk streaming.
  bool LoadHeader();
private:
  AkaiSample(DiskImage* pDisk, AkaiVolume* pParent, const AkaiDirEntry& DirEntry);
  virtual ~AkaiSample();

  friend class AkaiVolume;

  AkaiVolume* mpParent;
  DiskImage* mpDisk;
  AkaiDirEntry mDirEntry;
  bool mHeaderOK;
  int mPos;
  int mImageOffset; // actual position in the image where sample starts
};

class AkaiKeygroupSample : public AkaiDiskElement
{
public:
  //     35-46   sample 1 name               10,10,10... AKAII character set
  String mName;
  //     47      low vel                     0           0..127
  uint8_t mLowLevel;
  //     48      high vel                    127         0..127
  uint8_t mHighLevel;
  //     49      tune cents                  0           -128..127 (-50..50 cents)
  int8_t mTuneCents;
  //     50      tune semitones              0           -50..50
  int8_t mTuneSemitones;
  //     51      loudness                    0           -50..+50
  int8_t mLoudness;
  //     52      filter                      0           -50..+50
  int8_t mFilter;
  //     53      pan                         0           -50..+50
  int8_t mPan;
  //     54      loop mode                   0           0=AS_SAMPLE 1=LOOP_IN_REL 
  //                                                     2=LOOP_UNTIL_REL 3=NO_LOOP 
  //                                                     4=PLAY_TO_END
  uint8_t mLoopMode;
  //     55      (internal use)              255
  //     56      (internal use)              255
  //     57-58   (internal use)              44,1
  //
private:
  friend class AkaiKeygroup;
  bool Load(DiskImage* pDisk);
};

class AkaiEnveloppe
{
public:
  //     13      env1 attack                 0           0..99
  uint8_t mAttack;
  //     14      env1 decay                  30          0..99
  uint8_t mDecay;
  //     15      env1 sustain                99          0..99
  uint8_t mSustain;
  //     16      env1 release                45          0..99
  uint8_t mRelease;
  //     17      env1 vel>attack             0           -50..50
  int8_t mVelocityToAttack;
  //     18      env1 vel>release            0           -50..50 
  int8_t mVelocityToRelease;
  //     19      env1 offvel>release         0           -50..50
  int8_t mOffVelocityToRelease;
  //     20      env1 key>dec&rel            0           -50..50
  int8_t mKeyToDecayAndRelease;
private:
  friend class AkaiKeygroup;
  bool Load(DiskImage* pDisk);
};

class AkaiKeygroup
{
public:
  //    byte     description                 default     range/comments
  //   ---------------------------------------------------------------------------
  //     1       keygroup ID                 2
  //     2-3     next keygroup address       44,1        300,450,600,750.. (16-bit)         
  //     4       low key                     24          24..127
  uint8_t mLowKey;
  //     5       high key                    127         24..127
  uint8_t mHighKey;
  //     6       tune cents                  0           -128..127 (-50..50 cents)
  int8_t mTuneCents;
  //     7       tune semitones              0           -50..50
  int8_t mTuneSemitones;
  //     8       filter                      99          0..99
  uint8_t mFilter;
  //     9       key>filter                  12          0..24 semitone/oct
  uint8_t mKeyToFilter;
  //     10      vel>filt                    0           -50..50
  uint8_t mVelocityToFilter;
  //     11      pres>filt                   0           -50..50
  uint8_t mPressureToFilter;
  //     12      env2>filt                   0           -50..50
  uint8_t mEnveloppe2ToFilter;

  //     13      env1 attack                 0           0..99
  //     14      env1 decay                  30          0..99
  //     15      env1 sustain                99          0..99
  //     16      env1 release                45          0..99
  //     17      env1 vel>attack             0           -50..50
  //     18      env1 vel>release            0           -50..50 
  //     19      env1 offvel>release         0           -50..50
  //     20      env1 key>dec&rel            0           -50..50
  //     21      env2 attack                 0           0..99
  //     22      env2 decay                  50          0..99
  //     23      env2 sustain                99          0..99
  //     24      env2 release                45          0..99
  //     25      env2 vel>attack             0           -50..50
  //     26      env2 vel>release            0           -50..50
  //     27      env2 offvel>release         0           -50..50
  //     28      env2 key>dec&rel            0           -50..50
  AkaiEnveloppe mEnveloppes[2];

  //     29      vel>env2>filter             0           -50..50
  int8_t mVelocityToEnveloppe2ToFilter;
  //     30      env2>pitch                  0           -50..50
  int8_t mEnveloppe2ToPitch;
  //     31      vel zone crossfade          1           0=OFF 1=ON
  bool mVelocityZoneCrossfade;
  //     32      vel zones used              4           
  uint mVelocityZoneUsed;
  //     33      (internal use)              255         
  //     34      (internal use)              255         
  //

  //     35-46   sample 1 name               10,10,10... AKAII character set
  //     47      low vel                     0           0..127
  //     48      high vel                    127         0..127
  //     49      tune cents                  0           -128..127 (-50..50 cents)
  //     50      tune semitones              0           -50..50
  //     51      loudness                    0           -50..+50
  //     52      filter                      0           -50..+50
  //     53      pan                         0           -50..+50
  //     54      loop mode                   0           0=AS_SAMPLE 1=LOOP_IN_REL 
  //                                                     2=LOOP_UNTIL_REL 3=NO_LOOP 
  //                                                     4=PLAY_TO_END
  //     55      (internal use)              255
  //     56      (internal use)              255
  //     57-58   (internal use)              44,1
  //
  //     59-82   [repeat 35-58 for sample 2]
  //
  //     83-106  [repeat 35-58 for sample 3]
  //
  //     107-130 [repeat 35-58 for sample 4]
  //
  AkaiKeygroupSample mSamples[4];
  
  //     131     beat detune                 0           -50..50
  int8_t mBeatDetune;
  //     132     hold attack until loop      0           0=OFF 1=ON
  bool mHoldAttackUntilLoop;
  //     133-136 sample 1-4 key tracking     0           0=TRACK 1=FIXED
  bool mSampleKeyTracking[4];
  //     137-140 sample 1-4 aux out offset   0           0..7
  uint8_t mSampleAuxOutOffset[4];
  //     141-148 vel>sample start            0           -9999..9999 (16-bit signed)
  int16_t mVelocityToSampleStart[4];
  //     149     vel>volume offset           0           -50..50
  int8_t mVelocityToVolumeOffset[4];
  //     150     (not used)

private:
  friend class AkaiProgram;
  bool Load(DiskImage* pDisk);
};

/** @brief AKAI instrument definition
 *
 * Represents exactly one sample based instrument on the AKAI media.
 */
class AkaiProgram : public AkaiDiskElement
{
public:
  AkaiDirEntry GetDirEntry();
  // Samples:
  uint ListSamples(std::list<String>& rSamples);
  AkaiSample* GetSample(uint Index);
  AkaiSample* GetSample(const String& rName);

  //    byte     description                 default     range/comments
  //   ---------------------------------------------------------------------------
  //     1       program ID                  1
  //     2-3     first keygroup address      150,0       
  //     4-15    program name                10,10,10... AKAII character set
  String mName;
  //     16      MIDI program number         0           0..127
  uint8_t mMidiProgramNumber;
  //     17      MIDI channel                0           0..15, 255=OMNI
  uint8_t mMidiChannel;
  //     18      polyphony                   15          1..16
  uint8_t mPolyphony;
  //     19      priority                    1           0=LOW 1=NORM 2=HIGH 3=HOLD
  uint8_t mPriority;
  //     20      low key                     24          24..127
  uint8_t mLowKey;
  //     21      high key                    127         24..127
  uint8_t mHighKey;
  //     22      octave shift                0           -2..2
  int8_t mOctaveShift;
  //     23      aux output select           255         0..7, 255=OFF
  uint8_t mAuxOutputSelect;
  //     24      mix output level            99          0..99
  uint8_t mMixOutputSelect;
  //     25      mix output pan              0           -50..50
  int8_t mMixPan;
  //     26      volume                      80          0..99
  uint8_t mVolume;
  //     27      vel>volume                  20          -50..50
  int8_t mVelocityToVolume;
  //     28      key>volume                  0           -50..50
  int8_t mKeyToVolume;
  //     29      pres>volume                 0           -50..50
  int8_t mPressureToVolume;
  //     30      pan lfo rate                50          0..99
  uint8_t mPanLFORate;
  //     31      pan lfo depth               0           0..99
  uint8_t mPanLFODepth;
  //     32      pan lfo delay               0           0..99
  uint8_t mPanLFODelay;
  //     33      key>pan                     0           -50..50
  int8_t mKeyToPan;
  //     34      lfo rate                    50          0..99
  uint8_t mLFORate;
  //     35      lfo depth                   0           0..99
  uint8_t mLFODepth;
  //     36      lfo delay                   0           0..99
  uint8_t mLFODelay;
  //     37      mod>lfo depth               30          0..99
  uint8_t mModulationToLFODepth;
  //     38      pres>lfo depth              0           0..99
  uint8_t mPressureToLFODepth;
  //     39      vel>lfo depth               0           0..99
  uint8_t mVelocityToLFODepth;
  //     40      bend>pitch                  2           0..12 semitones
  uint8_t mBendToPitch;
  //     41      pres>pitch                  0           -12..12 semitones
  int8_t mPressureToPitch;
  //     42      keygroup crossfade          0           0=OFF 1=ON
  bool mKeygroupCrossfade;
  //     43      number of keygroups         1           1..99
  uint8_t mNumberOfKeygroups;
  //     44      (internal use)              0           program number
  //     45-56   key temperament C,C#,D...   0           -25..25 cents
  int8_t mKeyTemperament[11];
  //     57      fx output                   0           0=OFF 1=ON
  bool mFXOutput;
  //     58      mod>pan                     0           -50..50
  int8_t mModulationToPan;
  //     59      stereo coherence            0           0=OFF 1=ON
  bool mStereoCoherence;
  //     60      lfo desync                  1           0=OFF 1=ON
  bool mLFODesync;
  //     61      pitch law                   0           0=LINEAR
  uint8_t mPitchLaw;
  //     62      voice re-assign             0           0=OLDEST 1=QUIETEST
  uint8_t mVoiceReassign;
  //     63      softped>volume              10          0..99
  uint8_t mSoftpedToVolume;
  //     64      softped>attack              10          0..99
  uint8_t mSoftpedToAttack;
  //     65      softped>filt                10          0..99
  uint8_t mSoftpedToFilter;
  //     66      tune cents                  0           -128..127 (-50..50 cents)
  int8_t mSoftpedToTuneCents;
  //     67      tune semitones              0           -50..50
  int8_t mSoftpedToTuneSemitones;
  //     68      key>lfo rate                0           -50..50
  int8_t mKeyToLFORate;
  //     69      key>lfo depth               0           -50..50
  int8_t mKeyToLFODepth;
  //     70      key>lfo delay               0           -50..50
  int8_t mKeyToLFODelay;
  //     71      voice output scale          1           0=-6dB 1=0dB 2=+12dB
  uint8_t mVoiceOutputScale;
  //     72      stereo output scale         0           0=0dB 1=+6dB
  uint8_t mStereoOutputScale;
  //     73-150  (not used)

  AkaiKeygroup* mpKeygroups;

  bool Load();
  AkaiVolume* GetParent()
  {
    return mpParent;
  }

private:
  AkaiProgram(DiskImage* pDisk, AkaiVolume* pParent, const AkaiDirEntry& DirEntry);
  virtual ~AkaiProgram();

  friend class AkaiVolume;

  std::list<AkaiSample*> mpSamples;
  AkaiVolume* mpParent;
  DiskImage* mpDisk;
  AkaiDirEntry mDirEntry;
};

/** @brief Subdivision of an AKAI disk partition.
 *
 * An AKAI volume is a further subdivision of an AKAI disk partition.
 *
 * An AKAI volume actually provides access to the list of instruments (programs)
 * and samples. Samples referenced by an instrument (program) are always part of
 * the same volume.
 */
class AkaiVolume : public AkaiDiskElement
{
public:
  AkaiDirEntry GetDirEntry();
  // Programs:
  uint ListPrograms(std::list<AkaiDirEntry>& rPrograms);
  AkaiProgram* GetProgram(uint Index);
  AkaiProgram* GetProgram(const String& rName);

  // Samples:
  uint ListSamples(std::list<AkaiDirEntry>& rSamples);
  AkaiSample* GetSample(uint Index);
  AkaiSample* GetSample(const String& rName);

  AkaiPartition* GetParent()
  {
    return mpParent;
  }

  bool IsEmpty();
private:
  AkaiVolume(DiskImage* pDisk, AkaiPartition* pParent, const AkaiDirEntry& DirEntry);
  virtual ~AkaiVolume();
  uint ReadDir();

  friend class AkaiPartition;

  String mName;
  std::list<AkaiProgram*> mpPrograms;
  std::list<AkaiSample*> mpSamples;
  DiskImage* mpDisk;
  AkaiPartition* mpParent;
  AkaiDirEntry mDirEntry;
};

/** @brief Encapsulates one disk partition of an AKAI disk.
 *
 * An object of this class represents exactly one disk partition of an AKAI disk
 * media or of an AKAI disk image file. This is similar to a hard disk partition
 * on other operating systems, just in AKAI's own custom format.
 *
 * Each AKAI disk partition is further subdivided into so called "volumes".
 */
class AkaiPartition : public AkaiDiskElement
{
public:
  // Samples:
  uint ListVolumes(std::list<AkaiDirEntry>& rVolumes);
  AkaiVolume* GetVolume(uint Index);
  AkaiVolume* GetVolume(const String& rName);

  AkaiDisk* GetParent()
  {
    return mpParent;
  }

  bool IsEmpty();
private:
  AkaiPartition(DiskImage* pDisk, AkaiDisk* pParent);
  virtual ~AkaiPartition();

  friend class AkaiDisk;

  String mName;
  std::list<AkaiVolume*> mpVolumes;
  AkaiDisk* mpParent;
  DiskImage* mpDisk;
};

/** @brief Toplevel AKAI image interpreter.
 *
 * This class takes an AKAI disk image as constructor argument and provides
 * access to the individual partitions of that AKAI disk/image. The concept is
 * similar to hard disc layout for other operating systems, which are also
 * divided into individual partitions as topmost instance on the mass data
 * media.
 */
class AkaiDisk : public AkaiDiskElement
{
public:
  AkaiDisk(DiskImage* pDisk);
  virtual ~AkaiDisk();

  // Partitions:
  uint GetPartitionCount();
  AkaiPartition* GetPartition(uint count);

private:
  DiskImage* mpDisk;
  std::list<AkaiPartition*> mpPartitions;
};

#define AKAI_FILE_ENTRY_SIZE            24
#define AKAI_DIR_ENTRY_OFFSET           0xca
#define AKAI_DIR_ENTRY_SIZE             16
#define AKAI_ROOT_ENTRY_OFFSET          0x0

#define AKAI_PARTITION_END_MARK         0x8000
#define AKAI_BLOCK_SIZE                 0x2000

#define AKAI_FAT_OFFSET                 0x70a

#define AKAI_MAX_FILE_ENTRIES_S1000     125  //should be 128 ??
#define AKAI_MAX_FILE_ENTRIES_S3000     509  // should be 512 ??
#define AKAI_MAX_DIR_ENTRIES            100
#define AKAI_TYPE_DIR_S1000             1
#define AKAI_TYPE_DIR_S3000             3

#define AKAI_PROGRAM_ID   1
#define AKAI_KEYGROUP_ID  2
#define AKAI_SAMPLE_ID    3

#endif // __akai_h__
1	/*
2	libakai - C++ cross-platform akai sample disk reader
3	Copyright (C) 2002-2003 Sébastien Métrot
4
5	Linux port by Christian Schoenebeck <cuse@users.sourceforge.net> 2003-2014
6
7	This library is free software; you can redistribute it and/or
8	modify it under the terms of the GNU Lesser General Public
9	License as published by the Free Software Foundation; either
10	version 2.1 of the License, or (at your option) any later version.
11
12	This library is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15	Lesser General Public License for more details.
16
17	You should have received a copy of the GNU Lesser General Public
18	License along with this library; if not, write to the Free Software
19	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20	*/
21	// Akai.h
22	// Info for the akai disk & file format found here:
23	// http://www.abel.co.uk/~maxim/akai/akaiinfo.htm
24	//
25	#ifndef __akai_h__
26	#define __akai_h__
27
28	// for use with autoconf
29	#ifdef HAVE_CONFIG_H
30	#include <config.h>
31	#endif
32
33	#if !defined(_CARBON_) && !defined(_WIN32_)
34	# define LINUX 1
35	#endif
36
37	#include <stdint.h>
38	#include <string>
39	#include <stdio.h>
40	#include <stdlib.h>
41	#include <iostream>
42	#include <list>
43	#include <fstream>
44
45	#if LINUX
46	# include <sys/types.h>
47	# include <sys/stat.h>
48	# include <sys/fcntl.h>
49	# include <sys/ioctl.h>
50	# include <unistd.h>
51	# include <linux/cdrom.h>
52	#endif
53
54	typedef std::string String;
55	typedef std::streampos streampos;
56
57	class AkaiVolume;
58	class AkaiPartition;
59	class AkaiDisk;
60
61
62	/* current state of the Akai stream */
63	typedef enum {
64	akai_stream_ready = 0,
65	akai_stream_end_reached = 1,
66	akai_stream_closed = 2
67	} akai_stream_state_t;
68
69	/* stream position dependent to these relations */
70	typedef enum {
71	akai_stream_start = 0,
72	akai_stream_curpos = 1,
73	akai_stream_end = 2
74	} akai_stream_whence_t;
75
76
77	/* We need to cache IO access to reduce IO system calls which else would slow
78	down things tremendously. For that we differ between the following two
79	cache sizes:
80
81	CD_FRAMESIZE for CDROM access
82	DISK_CLUSTER_SIZE for normal IO access (e.g. from hard disk)
83
84	Not yet sure if these are the optimum sizes.
85	*/
86
87	#ifndef CD_FRAMESIZE
88	# define CD_FRAMESIZE 2048 /* frame size for Yellow Book, Form 1 */
89	#endif
90
91	#define DISK_CLUSTER_SIZE 61440 /* 60 kB */
92
93	typedef std::string String;
94
95	/** @brief Accessing AKAI image either from file or a drive (i.e. CDROM).
96	*
97	* This class implements a hardware abstraction layer, providing an abstract
98	* streaming API to read from AKAI data images, no matter if the AKAI image is
99	* already available as image file or whether the respective hardware drive
100	* needs to be accessed directly (i.e. CDROM drive, ZIP drive). So the main task
101	* of this class is isolating operating system dependent file/hardware access.
102	*/
103	class DiskImage
104	{
105	public:
106	DiskImage(const char* path); ///< Open an image from a file.
107	DiskImage(int disk); ///< Open an image from a device number (0='a:', 1='b:', etc...).
108
109	bool WriteImage(const char* path); ///< Extract Akai data track and write it into a regular file.
110
111	virtual ~DiskImage();
112
113	virtual akai_stream_state_t GetState() const;
114	virtual int GetPos() const;
115	virtual int SetPos(int Where, akai_stream_whence_t Whence = akai_stream_start);
116
117	virtual int Available (uint WordSize = 1);
118	virtual int Read (void* pData, uint WordCount, uint WordSize); ///< Returns number of successfully read words.
119
120	void ReadInt8(uint8_t* pData, uint WordCount);
121	void ReadInt16(uint16_t* pData, uint WordCount);
122	void ReadInt32(uint32_t* pData, uint WordCount);
123	int ReadInt8(uint8_t* pData); ///< Returns number of successfully read 8 Bit words.
124	int ReadInt16(uint16_t* pData); ///< Returns number of successfully read 16 Bit words.
125	int ReadInt32(uint32_t* pData); ///< Returns number of successfully read 32 Bit words.
126	uint8_t ReadInt8();
127	uint16_t ReadInt16();
128	uint32_t ReadInt32();
129
130
131	virtual uint GetError() const
132	{
133	return 0;
134	}
135
136	/virtual const nglChar GetErrorStr(uint err) const
137	{
138	return _T("No Error");
139	}*/
140
141	protected:
142	#ifdef _WIN32_
143	HANDLE mFile;
144	#elif defined _CARBON_ \|\| LINUX
145	int mFile;
146	#endif
147	bool mRegularFile;
148	int mPos;
149	int mCluster;
150	int mClusterSize;
151	int mSize; /* in bytes */
152	#if LINUX
153	/* start and end of the data track we chose (if we're reading from CDROM) */
154	int mStartFrame;
155	int mEndFrame;
156	#endif // LINUX
157	char* mpCache;
158
159	void OpenStream(const char* path);
160	inline void swapBytes_16(void* Word);
161	inline void swapBytes_32(void* Word);
162
163	private:
164	void Init();
165	};
166
167
168	class Resource
169	{
170	public:
171	Resource()
172	{
173	mRefCount = 0;
174	}
175	virtual ~Resource()
176	{
177	//NGL_ASSERT(mRefCount==0);
178	}
179	uint Acquire()
180	{
181	return mRefCount++;
182	}
183	uint Release()
184	{
185	uint res;
186	//NGL_ASSERT(mRefCount!=0);
187	mRefCount--;
188	res = mRefCount;
189	if (!mRefCount)
190	delete this;
191	return res;
192	}
193	private:
194	uint mRefCount;
195	};
196
197	class AkaiDirEntry
198	{
199	public:
200	String mName;
201	uint16_t mType;
202	int mSize;
203	uint16_t mStart;
204	int mIndex;
205	};
206
207	// AkaiDiskElement:
208	class AkaiDiskElement : public Resource
209	{
210	public:
211	AkaiDiskElement(uint Offset = 0)
212	{
213	mOffset = Offset;
214	}
215
216	uint GetOffset()
217	{
218	return mOffset;
219	}
220
221	protected:
222	void SetOffset(uint Offset)
223	{
224	mOffset = Offset;
225	}
226
227	void AkaiToAscii(char * buffer, int length);
228	int ReadFAT(DiskImage* pDisk, AkaiPartition* pPartition, int block);
229	bool ReadDirEntry(DiskImage* pDisk, AkaiPartition* pPartition, AkaiDirEntry& rEntry, int block, int pos);
230	private:
231	uint mOffset;
232	};
233
234	class AkaiSampleLoop
235	{
236	public:
237	// 4 unsigned Loop 1 marker
238	uint32_t mMarker;
239	// 2 unsigned Loop 1 fine length (65536ths)
240	uint16_t mFineLength;
241	// 4 unsigned Loop 1 coarse length (words)
242	uint32_t mCoarseLength;
243	// 2 unsigned Loop 1 time (msec. or 9999=infinite)
244	uint16_t mTime;
245	private:
246	friend class AkaiSample;
247	bool Load(DiskImage* pDisk);
248	};
249
250	class AkaiSample : public AkaiDiskElement
251	{
252	public:
253	AkaiDirEntry GetDirEntry();
254	// Length Format Description
255	// --------------------------------------------------------------
256	// 1 3
257	// 1 Not important: 0 for 22050Hz, 1 for 44100Hz
258	// 1 unsigned MIDI root note (C3=60)
259	uint8_t mMidiRootNote;
260	// 12 AKAII Filename
261	String mName;
262	// 1 128
263	// 1 unsigned Number of active loops
264	uint8_t mActiveLoops;
265	// 1 unsigned char First active loop (0 for none)
266	uint8_t mFirstActiveLoop;
267	// 1 0
268	// 1 unsigned Loop mode: 0=in release 1=until release
269	// 2=none 3=play to end
270	uint8_t mLoopMode;
271	// 1 signed Cents tune -50...+50
272	int8_t mTuneCents;
273	// 1 signed Semi tune -50...+50
274	int8_t mTuneSemitones;
275	// 4 0,8,2,0
276	//
277	// 4 unsigned Number of sample words
278	uint32_t mNumberOfSamples;
279	// 4 unsigned Start marker
280	uint32_t mStartMarker;
281	// 4 unsigned End marker
282	uint32_t mEndMarker;
283	//
284	// 4 unsigned Loop 1 marker
285	// 2 unsigned Loop 1 fine length (65536ths)
286	// 4 unsigned Loop 1 coarse length (words)
287	// 2 unsigned Loop 1 time (msec. or 9999=infinite)
288	//
289	// 84 [as above] Loops 2 to 8
290	//
291	AkaiSampleLoop mLoops[8];
292	// 4 0,0,255,255
293	// 2 unsigned Sampling frequency
294	uint16_t mSamplingFrequency;
295	// 1 signed char Loop tune offset -50...+50
296	int8_t mLoopTuneOffset;
297	// 10 0,0,0...
298
299	int16_t* mpSamples;
300
301	bool LoadSampleData(); ///< Load sample into RAM
302	void ReleaseSampleData(); ///< release the samples once you used them if you don't want to be bothered to
303	int SetPos(int Where, akai_stream_whence_t Whence = akai_stream_start); ///< Use this method and Read() if you don't want to load the sample into RAM, thus for disk streaming.
304	int Read(void* pBuffer, uint SampleCount); ///< Use this method and SetPos() if you don't want to load the sample into RAM, thus for disk streaming.
305	bool LoadHeader();
306	private:
307	AkaiSample(DiskImage* pDisk, AkaiVolume* pParent, const AkaiDirEntry& DirEntry);
308	virtual ~AkaiSample();
309
310	friend class AkaiVolume;
311
312	AkaiVolume* mpParent;
313	DiskImage* mpDisk;
314	AkaiDirEntry mDirEntry;
315	bool mHeaderOK;
316	int mPos;
317	int mImageOffset; // actual position in the image where sample starts
318	};
319
320	class AkaiKeygroupSample : public AkaiDiskElement
321	{
322	public:
323	// 35-46 sample 1 name 10,10,10... AKAII character set
324	String mName;
325	// 47 low vel 0 0..127
326	uint8_t mLowLevel;
327	// 48 high vel 127 0..127
328	uint8_t mHighLevel;
329	// 49 tune cents 0 -128..127 (-50..50 cents)
330	int8_t mTuneCents;
331	// 50 tune semitones 0 -50..50
332	int8_t mTuneSemitones;
333	// 51 loudness 0 -50..+50
334	int8_t mLoudness;
335	// 52 filter 0 -50..+50
336	int8_t mFilter;
337	// 53 pan 0 -50..+50
338	int8_t mPan;
339	// 54 loop mode 0 0=AS_SAMPLE 1=LOOP_IN_REL
340	// 2=LOOP_UNTIL_REL 3=NO_LOOP
341	// 4=PLAY_TO_END
342	uint8_t mLoopMode;
343	// 55 (internal use) 255
344	// 56 (internal use) 255
345	// 57-58 (internal use) 44,1
346	//
347	private:
348	friend class AkaiKeygroup;
349	bool Load(DiskImage* pDisk);
350	};
351
352	class AkaiEnveloppe
353	{
354	public:
355	// 13 env1 attack 0 0..99
356	uint8_t mAttack;
357	// 14 env1 decay 30 0..99
358	uint8_t mDecay;
359	// 15 env1 sustain 99 0..99
360	uint8_t mSustain;
361	// 16 env1 release 45 0..99
362	uint8_t mRelease;
363	// 17 env1 vel>attack 0 -50..50
364	int8_t mVelocityToAttack;
365	// 18 env1 vel>release 0 -50..50
366	int8_t mVelocityToRelease;
367	// 19 env1 offvel>release 0 -50..50
368	int8_t mOffVelocityToRelease;
369	// 20 env1 key>dec&rel 0 -50..50
370	int8_t mKeyToDecayAndRelease;
371	private:
372	friend class AkaiKeygroup;
373	bool Load(DiskImage* pDisk);
374	};
375
376	class AkaiKeygroup
377	{
378	public:
379	// byte description default range/comments
380	// ---------------------------------------------------------------------------
381	// 1 keygroup ID 2
382	// 2-3 next keygroup address 44,1 300,450,600,750.. (16-bit)
383	// 4 low key 24 24..127
384	uint8_t mLowKey;
385	// 5 high key 127 24..127
386	uint8_t mHighKey;
387	// 6 tune cents 0 -128..127 (-50..50 cents)
388	int8_t mTuneCents;
389	// 7 tune semitones 0 -50..50
390	int8_t mTuneSemitones;
391	// 8 filter 99 0..99
392	uint8_t mFilter;
393	// 9 key>filter 12 0..24 semitone/oct
394	uint8_t mKeyToFilter;
395	// 10 vel>filt 0 -50..50
396	uint8_t mVelocityToFilter;
397	// 11 pres>filt 0 -50..50
398	uint8_t mPressureToFilter;
399	// 12 env2>filt 0 -50..50
400	uint8_t mEnveloppe2ToFilter;
401
402	// 13 env1 attack 0 0..99
403	// 14 env1 decay 30 0..99
404	// 15 env1 sustain 99 0..99
405	// 16 env1 release 45 0..99
406	// 17 env1 vel>attack 0 -50..50
407	// 18 env1 vel>release 0 -50..50
408	// 19 env1 offvel>release 0 -50..50
409	// 20 env1 key>dec&rel 0 -50..50
410	// 21 env2 attack 0 0..99
411	// 22 env2 decay 50 0..99
412	// 23 env2 sustain 99 0..99
413	// 24 env2 release 45 0..99
414	// 25 env2 vel>attack 0 -50..50
415	// 26 env2 vel>release 0 -50..50
416	// 27 env2 offvel>release 0 -50..50
417	// 28 env2 key>dec&rel 0 -50..50
418	AkaiEnveloppe mEnveloppes[2];
419
420	// 29 vel>env2>filter 0 -50..50
421	int8_t mVelocityToEnveloppe2ToFilter;
422	// 30 env2>pitch 0 -50..50
423	int8_t mEnveloppe2ToPitch;
424	// 31 vel zone crossfade 1 0=OFF 1=ON
425	bool mVelocityZoneCrossfade;
426	// 32 vel zones used 4
427	uint mVelocityZoneUsed;
428	// 33 (internal use) 255
429	// 34 (internal use) 255
430	//
431
432	// 35-46 sample 1 name 10,10,10... AKAII character set
433	// 47 low vel 0 0..127
434	// 48 high vel 127 0..127
435	// 49 tune cents 0 -128..127 (-50..50 cents)
436	// 50 tune semitones 0 -50..50
437	// 51 loudness 0 -50..+50
438	// 52 filter 0 -50..+50
439	// 53 pan 0 -50..+50
440	// 54 loop mode 0 0=AS_SAMPLE 1=LOOP_IN_REL
441	// 2=LOOP_UNTIL_REL 3=NO_LOOP
442	// 4=PLAY_TO_END
443	// 55 (internal use) 255
444	// 56 (internal use) 255
445	// 57-58 (internal use) 44,1
446	//
447	// 59-82 [repeat 35-58 for sample 2]
448	//
449	// 83-106 [repeat 35-58 for sample 3]
450	//
451	// 107-130 [repeat 35-58 for sample 4]
452	//
453	AkaiKeygroupSample mSamples[4];
454
455	// 131 beat detune 0 -50..50
456	int8_t mBeatDetune;
457	// 132 hold attack until loop 0 0=OFF 1=ON
458	bool mHoldAttackUntilLoop;
459	// 133-136 sample 1-4 key tracking 0 0=TRACK 1=FIXED
460	bool mSampleKeyTracking[4];
461	// 137-140 sample 1-4 aux out offset 0 0..7
462	uint8_t mSampleAuxOutOffset[4];
463	// 141-148 vel>sample start 0 -9999..9999 (16-bit signed)
464	int16_t mVelocityToSampleStart[4];
465	// 149 vel>volume offset 0 -50..50
466	int8_t mVelocityToVolumeOffset[4];
467	// 150 (not used)
468
469	private:
470	friend class AkaiProgram;
471	bool Load(DiskImage* pDisk);
472	};
473
474	/** @brief AKAI instrument definition
475	*
476	* Represents exactly one sample based instrument on the AKAI media.
477	*/
478	class AkaiProgram : public AkaiDiskElement
479	{
480	public:
481	AkaiDirEntry GetDirEntry();
482	// Samples:
483	uint ListSamples(std::list<String>& rSamples);
484	AkaiSample* GetSample(uint Index);
485	AkaiSample* GetSample(const String& rName);
486
487	// byte description default range/comments
488	// ---------------------------------------------------------------------------
489	// 1 program ID 1
490	// 2-3 first keygroup address 150,0
491	// 4-15 program name 10,10,10... AKAII character set
492	String mName;
493	// 16 MIDI program number 0 0..127
494	uint8_t mMidiProgramNumber;
495	// 17 MIDI channel 0 0..15, 255=OMNI
496	uint8_t mMidiChannel;
497	// 18 polyphony 15 1..16
498	uint8_t mPolyphony;
499	// 19 priority 1 0=LOW 1=NORM 2=HIGH 3=HOLD
500	uint8_t mPriority;
501	// 20 low key 24 24..127
502	uint8_t mLowKey;
503	// 21 high key 127 24..127
504	uint8_t mHighKey;
505	// 22 octave shift 0 -2..2
506	int8_t mOctaveShift;
507	// 23 aux output select 255 0..7, 255=OFF
508	uint8_t mAuxOutputSelect;
509	// 24 mix output level 99 0..99
510	uint8_t mMixOutputSelect;
511	// 25 mix output pan 0 -50..50
512	int8_t mMixPan;
513	// 26 volume 80 0..99
514	uint8_t mVolume;
515	// 27 vel>volume 20 -50..50
516	int8_t mVelocityToVolume;
517	// 28 key>volume 0 -50..50
518	int8_t mKeyToVolume;
519	// 29 pres>volume 0 -50..50
520	int8_t mPressureToVolume;
521	// 30 pan lfo rate 50 0..99
522	uint8_t mPanLFORate;
523	// 31 pan lfo depth 0 0..99
524	uint8_t mPanLFODepth;
525	// 32 pan lfo delay 0 0..99
526	uint8_t mPanLFODelay;
527	// 33 key>pan 0 -50..50
528	int8_t mKeyToPan;
529	// 34 lfo rate 50 0..99
530	uint8_t mLFORate;
531	// 35 lfo depth 0 0..99
532	uint8_t mLFODepth;
533	// 36 lfo delay 0 0..99
534	uint8_t mLFODelay;
535	// 37 mod>lfo depth 30 0..99
536	uint8_t mModulationToLFODepth;
537	// 38 pres>lfo depth 0 0..99
538	uint8_t mPressureToLFODepth;
539	// 39 vel>lfo depth 0 0..99
540	uint8_t mVelocityToLFODepth;
541	// 40 bend>pitch 2 0..12 semitones
542	uint8_t mBendToPitch;
543	// 41 pres>pitch 0 -12..12 semitones
544	int8_t mPressureToPitch;
545	// 42 keygroup crossfade 0 0=OFF 1=ON
546	bool mKeygroupCrossfade;
547	// 43 number of keygroups 1 1..99
548	uint8_t mNumberOfKeygroups;
549	// 44 (internal use) 0 program number
550	// 45-56 key temperament C,C#,D... 0 -25..25 cents
551	int8_t mKeyTemperament[11];
552	// 57 fx output 0 0=OFF 1=ON
553	bool mFXOutput;
554	// 58 mod>pan 0 -50..50
555	int8_t mModulationToPan;
556	// 59 stereo coherence 0 0=OFF 1=ON
557	bool mStereoCoherence;
558	// 60 lfo desync 1 0=OFF 1=ON
559	bool mLFODesync;
560	// 61 pitch law 0 0=LINEAR
561	uint8_t mPitchLaw;
562	// 62 voice re-assign 0 0=OLDEST 1=QUIETEST
563	uint8_t mVoiceReassign;
564	// 63 softped>volume 10 0..99
565	uint8_t mSoftpedToVolume;
566	// 64 softped>attack 10 0..99
567	uint8_t mSoftpedToAttack;
568	// 65 softped>filt 10 0..99
569	uint8_t mSoftpedToFilter;
570	// 66 tune cents 0 -128..127 (-50..50 cents)
571	int8_t mSoftpedToTuneCents;
572	// 67 tune semitones 0 -50..50
573	int8_t mSoftpedToTuneSemitones;
574	// 68 key>lfo rate 0 -50..50
575	int8_t mKeyToLFORate;
576	// 69 key>lfo depth 0 -50..50
577	int8_t mKeyToLFODepth;
578	// 70 key>lfo delay 0 -50..50
579	int8_t mKeyToLFODelay;
580	// 71 voice output scale 1 0=-6dB 1=0dB 2=+12dB
581	uint8_t mVoiceOutputScale;
582	// 72 stereo output scale 0 0=0dB 1=+6dB
583	uint8_t mStereoOutputScale;
584	// 73-150 (not used)
585
586	AkaiKeygroup* mpKeygroups;
587
588	bool Load();
589	AkaiVolume* GetParent()
590	{
591	return mpParent;
592	}
593
594	private:
595	AkaiProgram(DiskImage* pDisk, AkaiVolume* pParent, const AkaiDirEntry& DirEntry);
596	virtual ~AkaiProgram();
597
598	friend class AkaiVolume;
599
600	std::list<AkaiSample*> mpSamples;
601	AkaiVolume* mpParent;
602	DiskImage* mpDisk;
603	AkaiDirEntry mDirEntry;
604	};
605
606	/** @brief Subdivision of an AKAI disk partition.
607	*
608	* An AKAI volume is a further subdivision of an AKAI disk partition.
609	*
610	* An AKAI volume actually provides access to the list of instruments (programs)
611	* and samples. Samples referenced by an instrument (program) are always part of
612	* the same volume.
613	*/
614	class AkaiVolume : public AkaiDiskElement
615	{
616	public:
617	AkaiDirEntry GetDirEntry();
618	// Programs:
619	uint ListPrograms(std::list<AkaiDirEntry>& rPrograms);
620	AkaiProgram* GetProgram(uint Index);
621	AkaiProgram* GetProgram(const String& rName);
622
623	// Samples:
624	uint ListSamples(std::list<AkaiDirEntry>& rSamples);
625	AkaiSample* GetSample(uint Index);
626	AkaiSample* GetSample(const String& rName);
627
628	AkaiPartition* GetParent()
629	{
630	return mpParent;
631	}
632
633	bool IsEmpty();
634	private:
635	AkaiVolume(DiskImage* pDisk, AkaiPartition* pParent, const AkaiDirEntry& DirEntry);
636	virtual ~AkaiVolume();
637	uint ReadDir();
638
639	friend class AkaiPartition;
640
641	String mName;
642	std::list<AkaiProgram*> mpPrograms;
643	std::list<AkaiSample*> mpSamples;
644	DiskImage* mpDisk;
645	AkaiPartition* mpParent;
646	AkaiDirEntry mDirEntry;
647	};
648
649	/** @brief Encapsulates one disk partition of an AKAI disk.
650	*
651	* An object of this class represents exactly one disk partition of an AKAI disk
652	* media or of an AKAI disk image file. This is similar to a hard disk partition
653	* on other operating systems, just in AKAI's own custom format.
654	*
655	* Each AKAI disk partition is further subdivided into so called "volumes".
656	*/
657	class AkaiPartition : public AkaiDiskElement
658	{
659	public:
660	// Samples:
661	uint ListVolumes(std::list<AkaiDirEntry>& rVolumes);
662	AkaiVolume* GetVolume(uint Index);
663	AkaiVolume* GetVolume(const String& rName);
664
665	AkaiDisk* GetParent()
666	{
667	return mpParent;
668	}
669
670	bool IsEmpty();
671	private:
672	AkaiPartition(DiskImage* pDisk, AkaiDisk* pParent);
673	virtual ~AkaiPartition();
674
675	friend class AkaiDisk;
676
677	String mName;
678	std::list<AkaiVolume*> mpVolumes;
679	AkaiDisk* mpParent;
680	DiskImage* mpDisk;
681	};
682
683	/** @brief Toplevel AKAI image interpreter.
684	*
685	* This class takes an AKAI disk image as constructor argument and provides
686	* access to the individual partitions of that AKAI disk/image. The concept is
687	* similar to hard disc layout for other operating systems, which are also
688	* divided into individual partitions as topmost instance on the mass data
689	* media.
690	*/
691	class AkaiDisk : public AkaiDiskElement
692	{
693	public:
694	AkaiDisk(DiskImage* pDisk);
695	virtual ~AkaiDisk();
696
697	// Partitions:
698	uint GetPartitionCount();
699	AkaiPartition* GetPartition(uint count);
700
701	private:
702	DiskImage* mpDisk;
703	std::list<AkaiPartition*> mpPartitions;
704	};
705
706	#define AKAI_FILE_ENTRY_SIZE 24
707	#define AKAI_DIR_ENTRY_OFFSET 0xca
708	#define AKAI_DIR_ENTRY_SIZE 16
709	#define AKAI_ROOT_ENTRY_OFFSET 0x0
710
711	#define AKAI_PARTITION_END_MARK 0x8000
712	#define AKAI_BLOCK_SIZE 0x2000
713
714	#define AKAI_FAT_OFFSET 0x70a
715
716	#define AKAI_MAX_FILE_ENTRIES_S1000 125 //should be 128 ??
717	#define AKAI_MAX_FILE_ENTRIES_S3000 509 // should be 512 ??
718	#define AKAI_MAX_DIR_ENTRIES 100
719	#define AKAI_TYPE_DIR_S1000 1
720	#define AKAI_TYPE_DIR_S3000 3
721
722	#define AKAI_PROGRAM_ID 1
723	#define AKAI_KEYGROUP_ID 2
724	#define AKAI_SAMPLE_ID 3
725
726	#endif // __akai_h__