/[svn]/libgig/trunk/src/gig.h

Diff of /libgig/trunk/src/gig.h

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-revision 666 by persson,
Sun Jun 19 15:18:59 2005 UTC
+revision 2547 by schoenebeck,
Tue May 13 11:17:24 2014 UTC
 Line 1
  /***************************************************************************
   *                                                                         *
-  *   libgig - C++ cross-platform Gigasampler format file loader library    *
+  *   libgig - C++ cross-platform Gigasampler format file access library    *
   *                                                                         *
-  *   Copyright (C) 2003-2005 by Christian Schoenebeck                      *
+  *   Copyright (C) 2003-2014 by Christian Schoenebeck                      *
   *                              <cuse@users.sourceforge.net>               *
   *                                                                         *
   *   This library is free software; you can redistribute it and/or modify  *
 Line 26
  #include "DLS.h"
- #include <math.h>
- #include <string.h>
- /// Initial size of the sample buffer which is used for decompression of
- /// compressed sample wave streams - this value should always be bigger than
- /// the biggest sample piece expected to be read by the sampler engine,
- /// otherwise the buffer size will be raised at runtime and thus the buffer
- /// reallocated which is time consuming and unefficient.
- #define INITIAL_SAMPLE_BUFFER_SIZE              512000 // 512 kB
  #if WORDS_BIGENDIAN
  # define LIST_TYPE_3PRG 0x33707267
  # define LIST_TYPE_3EWL 0x3365776C
- # define CHUNK_ID_SMPL  0x736D706C
+ # define LIST_TYPE_3GRI 0x33677269
+ # define LIST_TYPE_3GNL 0x33676E6C
  # define CHUNK_ID_3GIX  0x33676978
  # define CHUNK_ID_3EWA  0x33657761
  # define CHUNK_ID_3LNK  0x336C6E6B
  # define CHUNK_ID_3EWG  0x33657767
  # define CHUNK_ID_EWAV  0x65776176
+ # define CHUNK_ID_3GNM  0x33676E6D
+ # define CHUNK_ID_EINF  0x65696E66
+ # define CHUNK_ID_3CRC  0x33637263
  #else  // little endian
  # define LIST_TYPE_3PRG 0x67727033
  # define LIST_TYPE_3EWL 0x6C776533
- # define CHUNK_ID_SMPL  0x6C706D73
+ # define LIST_TYPE_3GRI 0x69726733
+ # define LIST_TYPE_3GNL 0x6C6E6733
  # define CHUNK_ID_3GIX  0x78696733
  # define CHUNK_ID_3EWA  0x61776533
  # define CHUNK_ID_3LNK  0x6B6E6C33
  # define CHUNK_ID_3EWG  0x67776533
  # define CHUNK_ID_EWAV  0x76617765
+ # define CHUNK_ID_3GNM  0x6D6E6733
+ # define CHUNK_ID_EINF  0x666E6965
+ # define CHUNK_ID_3CRC  0x63726333
  #endif // WORDS_BIGENDIAN
- /** (so far) every exponential paramater in the gig format has a basis of 1.000000008813822 */
- #define GIG_EXP_DECODE(x)                                       (pow(1.000000008813822, x))
- #define GIG_PITCH_TRACK_EXTRACT(x)                              (!(x & 0x01))
- #define GIG_VCF_RESONANCE_CTRL_EXTRACT(x)                       ((x >> 4) & 0x03)
- #define GIG_EG_CTR_ATTACK_INFLUENCE_EXTRACT(x)                  ((x >> 1) & 0x03)
- #define GIG_EG_CTR_DECAY_INFLUENCE_EXTRACT(x)                   ((x >> 3) & 0x03)
- #define GIG_EG_CTR_RELEASE_INFLUENCE_EXTRACT(x)                 ((x >> 5) & 0x03)
  /** Gigasampler specific classes and definitions */
  namespace gig {
-Line 148 
 namespace gig {
+Line 138 
 namespace gig {
      /** Defines how the filter cutoff frequency is controlled by. */
      typedef enum {
          vcf_cutoff_ctrl_none         = 0x00,
+         vcf_cutoff_ctrl_none2        = 0x01,  ///< The difference between none and none2 is unknown
          vcf_cutoff_ctrl_modwheel     = 0x81,  ///< Modulation Wheel (MIDI Controller 1)
          vcf_cutoff_ctrl_effect1      = 0x8c,  ///< Effect Controller 1 (Coarse, MIDI Controller 12)
          vcf_cutoff_ctrl_effect2      = 0x8d,  ///< Effect Controller 2 (Coarse, MIDI Controller 13)
-Line 221 
 namespace gig {
+Line 212 
 namespace gig {
          dimension_none              = 0x00, ///< Dimension not in use.
          dimension_samplechannel     = 0x80, ///< If used sample has more than one channel (thus is not mono).
          dimension_layer             = 0x81, ///< For layering of up to 8 instruments (and eventually crossfading of 2 or 4 layers).
-         dimension_velocity          = 0x82, ///< Key Velocity (this is the only dimension where the ranges can exactly be defined).
+         dimension_velocity          = 0x82, ///< Key Velocity (this is the only dimension in gig2 where the ranges can exactly be defined).
          dimension_channelaftertouch = 0x83, ///< Channel Key Pressure
          dimension_releasetrigger    = 0x84, ///< Special dimension for triggering samples on releasing a key.
          dimension_keyboard          = 0x85, ///< Dimension for keyswitching
          dimension_roundrobin        = 0x86, ///< Different samples triggered each time a note is played, dimension regions selected in sequence
          dimension_random            = 0x87, ///< Different samples triggered each time a note is played, random order
+         dimension_smartmidi         = 0x88, ///< For MIDI tools like legato and repetition mode
+         dimension_roundrobinkeyboard = 0x89, ///< Different samples triggered each time a note is played, any key advances the counter
          dimension_modwheel          = 0x01, ///< Modulation Wheel (MIDI Controller 1)
          dimension_breath            = 0x02, ///< Breath Controller (Coarse, MIDI Controller 2)
          dimension_foot              = 0x04, ///< Foot Pedal (Coarse, MIDI Controller 4)
-Line 257 
 namespace gig {
+Line 250 
 namespace gig {
       * into the corresponding dimension bit number.
       */
      typedef enum {
-         split_type_normal,         ///< dimension value between 0-127, no custom range of zones
+         split_type_normal,         ///< dimension value between 0-127
-         split_type_customvelocity, ///< a velocity dimension split with custom range definition for each zone (if a velocity dimension split has no custom defined zone ranges then it's also just of type split_type_normal)
          split_type_bit             ///< dimension values are already the sought bit number
      } split_type_t;
-Line 268 
 namespace gig {
+Line 260 
 namespace gig {
          uint8_t      bits;       ///< Number of "bits" (1 bit = 2 splits/zones, 2 bit = 4 splits/zones, 3 bit = 8 splits/zones,...).
          uint8_t      zones;      ///< Number of zones the dimension has.
          split_type_t split_type; ///< Intended for internal usage: will be used to convert a dimension value into the corresponding dimension bit number.
-         range_t*     ranges;     ///< Intended for internal usage: Points to the beginning of a range_t array which reflects the value ranges of each dimension zone (only if custom defined ranges are defined, is NULL otherwise).
+         float        zone_size;  ///< Intended for internal usage: reflects the size of each zone (128/zones) for normal split types only, 0 otherwise.
-         unsigned int zone_size;  ///< Intended for internal usage: reflects the size of each zone (128/zones) for normal split types only, 0 otherwise.
      };
      /** Defines which frequencies are filtered by the VCF. */
-Line 335 
 namespace gig {
+Line 326 
 namespace gig {
      class Instrument;
      class Sample;
      class Region;
+     class Group;
-     /** Encapsulates articulation information of a dimension region.
+     /** @brief Encapsulates articulation information of a dimension region.
       *
       *  Every Gigasampler Instrument has at least one dimension region
       *  (exactly then when it has no dimension defined).
-Line 350 
 namespace gig {
+Line 342 
 namespace gig {
       */
      class DimensionRegion : protected DLS::Sampler {
          public:
-             uint8_t            VelocityUpperLimit;            ///< Defines the upper velocity value limit of a velocity split (only if an user defined limit was set, thus a value not equal to 128/NumberOfSplits, else this value is 0).
+             uint8_t            VelocityUpperLimit;            ///< Defines the upper velocity value limit of a velocity split (only if an user defined limit was set, thus a value not equal to 128/NumberOfSplits, else this value is 0). Only for gig2, for gig3 and above the DimensionUpperLimits are used instead.
              Sample*            pSample;                       ///< Points to the Sample which is assigned to the dimension region.
              // Sample Amplitude EG/LFO
              uint16_t           EG1PreAttack;                  ///< Preattack value of the sample amplitude EG (0 - 1000 permille).
-Line 402 
 namespace gig {
+Line 394 
 namespace gig {
              // Filter
              bool               VCFEnabled;                    ///< If filter should be used.
              vcf_type_t         VCFType;                       ///< Defines the general filter characteristic (lowpass, highpass, bandpass, etc.).
-             vcf_cutoff_ctrl_t  VCFCutoffController;           ///< Specifies which external controller has influence on the filter cutoff frequency.
+             vcf_cutoff_ctrl_t  VCFCutoffController;           ///< Specifies which external controller has influence on the filter cutoff frequency. @deprecated Don't alter directly, use SetVCFCutoffController() instead!
+             bool               VCFCutoffControllerInvert;     ///< Inverts values coming from the defined cutoff controller
              uint8_t            VCFCutoff;                     ///< Max. cutoff frequency.
-             curve_type_t       VCFVelocityCurve;              ///< Defines a transformation curve for the incoming velocity values, affecting the VCF.
+             curve_type_t       VCFVelocityCurve;              ///< Defines a transformation curve for the incoming velocity values, affecting the VCF. @deprecated Don't alter directly, use SetVCFVelocityCurve() instead!
-             uint8_t            VCFVelocityScale;              ///< (0-127) Amount velocity controls VCF cutoff frequency (only if no other VCF cutoff controller is defined).
+             uint8_t            VCFVelocityScale;              ///< (0-127) Amount velocity controls VCF cutoff frequency (only if no other VCF cutoff controller is defined, otherwise this is the minimum cutoff). @deprecated Don't alter directly, use SetVCFVelocityScale() instead!
-             uint8_t            VCFVelocityDynamicRange;       ///< 0x04 = lowest, 0x00 = highest
+             uint8_t            VCFVelocityDynamicRange;       ///< 0x04 = lowest, 0x00 = highest . @deprecated Don't alter directly, use SetVCFVelocityDynamicRange() instead!
              uint8_t            VCFResonance;                  ///< Firm internal filter resonance weight.
              bool               VCFResonanceDynamic;           ///< If <i>true</i>: Increases the resonance Q according to changes of controllers that actually control the VCF cutoff frequency (EG2, ext. VCF MIDI controller).
              vcf_res_ctrl_t     VCFResonanceController;        ///< Specifies which external controller has influence on the filter resonance Q.
              bool               VCFKeyboardTracking;           ///< If <i>true</i>: VCF cutoff frequence will be dependend to the note key position relative to the defined breakpoint value.
              uint8_t            VCFKeyboardTrackingBreakpoint; ///< See VCFKeyboardTracking (0 - 127).
              // Key Velocity Transformations
-             curve_type_t       VelocityResponseCurve;         ///< Defines a transformation curve to the incoming velocity values affecting amplitude (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead).
+             curve_type_t       VelocityResponseCurve;         ///< Defines a transformation curve to the incoming velocity values affecting amplitude (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead). @deprecated Don't alter directly, use SetVelocityResponseCurve() instead!
-             uint8_t            VelocityResponseDepth;         ///< Dynamic range of velocity affecting amplitude (0 - 4) (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead).
+             uint8_t            VelocityResponseDepth;         ///< Dynamic range of velocity affecting amplitude (0 - 4) (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead). @deprecated Don't alter directly, use SetVelocityResponseDepth() instead!
-             uint8_t            VelocityResponseCurveScaling;  ///< 0 - 127 (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead)
+             uint8_t            VelocityResponseCurveScaling;  ///< 0 - 127 (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead). @deprecated Don't alter directly, use SetVelocityResponseCurveScaling() instead!
-             curve_type_t       ReleaseVelocityResponseCurve;  ///< Defines a transformation curve to the incoming release veloctiy values affecting envelope times.
+             curve_type_t       ReleaseVelocityResponseCurve;  ///< Defines a transformation curve to the incoming release veloctiy values affecting envelope times. @deprecated Don't alter directly, use SetReleaseVelocityResponseCurve() instead!
-             uint8_t            ReleaseVelocityResponseDepth;  ///< Dynamic range of release velocity affecting envelope time (0 - 4).
+             uint8_t            ReleaseVelocityResponseDepth;  ///< Dynamic range of release velocity affecting envelope time (0 - 4). @deprecated Don't alter directly, use SetReleaseVelocityResponseDepth() instead!
              uint8_t            ReleaseTriggerDecay;           ///< 0 - 8
              // Mix / Layer
              crossfade_t        Crossfade;
-Line 433 
 namespace gig {
+Line 426 
 namespace gig {
              bool               MSDecode;                      ///< Gigastudio flag: defines if Mid Side Recordings should be decoded.
              uint16_t           SampleStartOffset;             ///< Number of samples the sample start should be moved (0 - 2000).
              double             SampleAttenuation;             ///< Sample volume (calculated from DLS::Sampler::Gain)
+             uint8_t            DimensionUpperLimits[8];       ///< gig3: defines the upper limit of the dimension values for this dimension region. In case you wondered why this is defined on DimensionRegion level and not on Region level: the zone sizes (upper limits) of the velocity dimension can indeed differ in the individual dimension regions, depending on which zones of the other dimension types are currently selected. So this is exceptional for the velocity dimension only. All other dimension types have the same dimension zone sizes for every single DimensionRegion (of the sample Region).
              // derived attributes from DLS::Sampler
-             DLS::Sampler::UnityNote;
+             using DLS::Sampler::UnityNote;
-             DLS::Sampler::FineTune;
+             using DLS::Sampler::FineTune;
-             DLS::Sampler::Gain;
+             using DLS::Sampler::Gain;
-             DLS::Sampler::SampleLoops;
+             using DLS::Sampler::SampleLoops;
-             DLS::Sampler::pSampleLoops;
+             using DLS::Sampler::pSampleLoops;
-             // Methods
+             // own methods
              double GetVelocityAttenuation(uint8_t MIDIKeyVelocity);
              double GetVelocityRelease(uint8_t MIDIKeyVelocity);
+             double GetVelocityCutoff(uint8_t MIDIKeyVelocity);
+             void SetVelocityResponseCurve(curve_type_t curve);
+             void SetVelocityResponseDepth(uint8_t depth);
+             void SetVelocityResponseCurveScaling(uint8_t scaling);
+             void SetReleaseVelocityResponseCurve(curve_type_t curve);
+             void SetReleaseVelocityResponseDepth(uint8_t depth);
+             void SetVCFCutoffController(vcf_cutoff_ctrl_t controller);
+             void SetVCFVelocityCurve(curve_type_t curve);
+             void SetVCFVelocityDynamicRange(uint8_t range);
+             void SetVCFVelocityScale(uint8_t scaling);
+             Region* GetParent() const;
+             // derived methods
+             using DLS::Sampler::AddSampleLoop;
+             using DLS::Sampler::DeleteSampleLoop;
+             // overridden methods
+             virtual void SetGain(int32_t gain);
+             virtual void UpdateChunks();
+             virtual void CopyAssign(const DimensionRegion* orig);
          protected:
-             DimensionRegion(RIFF::List* _3ewl);
+             uint8_t* VelocityTable; ///< For velocity dimensions with custom defined zone ranges only: used for fast converting from velocity MIDI value to dimension bit number.
+             DimensionRegion(Region* pParent, RIFF::List* _3ewl);
+             DimensionRegion(RIFF::List* _3ewl, const DimensionRegion& src);
             ~DimensionRegion();
+             void CopyAssign(const DimensionRegion* orig, const std::map<Sample*,Sample*>* mSamples);
              friend class Region;
          private:
              typedef enum { ///< Used to decode attenuation, EG1 and EG2 controller
+                 // official leverage controllers as they were defined in the original Gigasampler/GigaStudio format:
                  _lev_ctrl_none              = 0x00,
                  _lev_ctrl_modwheel          = 0x03, ///< Modulation Wheel (MIDI Controller 1)
                  _lev_ctrl_breath            = 0x05, ///< Breath Controller (Coarse, MIDI Controller 2)
-Line 476 
 namespace gig {
+Line 491 
 namespace gig {
                  _lev_ctrl_effect4depth      = 0x2b, ///< Effect 4 Depth (MIDI Controller 94)
                  _lev_ctrl_effect5depth      = 0x2d, ///< Effect 5 Depth (MIDI Controller 95)
                  _lev_ctrl_channelaftertouch = 0x2f, ///< Channel Key Pressure
-                 _lev_ctrl_velocity          = 0xff  ///< Key Velocity
+                 _lev_ctrl_velocity          = 0xff, ///< Key Velocity
+                 // format extension (these controllers are so far only supported by LinuxSampler & gigedit) they will *NOT* work with Gigasampler/GigaStudio !
+                 // (the assigned values here are their official MIDI CC number plus the highest bit set):
+                 _lev_ctrl_CC3_EXT           = 0x83, ///< MIDI Controller 3 [gig format extension]
+                 _lev_ctrl_CC6_EXT           = 0x86, ///< Data Entry MSB (MIDI Controller 6) [gig format extension]
+                 _lev_ctrl_CC7_EXT           = 0x87, ///< Channel Volume (MIDI Controller 7) [gig format extension]
+                 _lev_ctrl_CC8_EXT           = 0x88, ///< Balance (MIDI Controller 8) [gig format extension]
+                 _lev_ctrl_CC9_EXT           = 0x89, ///< MIDI Controller 9 [gig format extension]
+                 _lev_ctrl_CC10_EXT          = 0x8a, ///< Pan (MIDI Controller 10) [gig format extension]
+                 _lev_ctrl_CC11_EXT          = 0x8b, ///< Expression Controller (MIDI Controller 11) [gig format extension]
+                 _lev_ctrl_CC14_EXT          = 0x8e, ///< MIDI Controller 14 [gig format extension]
+                 _lev_ctrl_CC15_EXT          = 0x8f, ///< MIDI Controller 15 [gig format extension]
+                 _lev_ctrl_CC20_EXT          = 0x94, ///< MIDI Controller 20 [gig format extension]
+                 _lev_ctrl_CC21_EXT          = 0x95, ///< MIDI Controller 21 [gig format extension]
+                 _lev_ctrl_CC22_EXT          = 0x96, ///< MIDI Controller 22 [gig format extension]
+                 _lev_ctrl_CC23_EXT          = 0x97, ///< MIDI Controller 23 [gig format extension]
+                 _lev_ctrl_CC24_EXT          = 0x98, ///< MIDI Controller 24 [gig format extension]
+                 _lev_ctrl_CC25_EXT          = 0x99, ///< MIDI Controller 25 [gig format extension]
+                 _lev_ctrl_CC26_EXT          = 0x9a, ///< MIDI Controller 26 [gig format extension]
+                 _lev_ctrl_CC27_EXT          = 0x9b, ///< MIDI Controller 27 [gig format extension]
+                 _lev_ctrl_CC28_EXT          = 0x9c, ///< MIDI Controller 28 [gig format extension]
+                 _lev_ctrl_CC29_EXT          = 0x9d, ///< MIDI Controller 29 [gig format extension]
+                 _lev_ctrl_CC30_EXT          = 0x9e, ///< MIDI Controller 30 [gig format extension]
+                 _lev_ctrl_CC31_EXT          = 0x9f, ///< MIDI Controller 31 [gig format extension]
+                 _lev_ctrl_CC68_EXT          = 0xc4, ///< Legato Footswitch (MIDI Controller 68) [gig format extension]
+                 _lev_ctrl_CC69_EXT          = 0xc5, ///< Hold 2 (MIDI Controller 69) [gig format extension]
+                 _lev_ctrl_CC70_EXT          = 0xc6, ///< Sound Ctrl. 1 - Sound Variation (MIDI Controller 70) [gig format extension]
+                 _lev_ctrl_CC71_EXT          = 0xc7, ///< Sound Ctrl. 2 - Timbre (MIDI Controller 71) [gig format extension]
+                 _lev_ctrl_CC72_EXT          = 0xc8, ///< Sound Ctrl. 3 - Release Time (MIDI Controller 72) [gig format extension]
+                 _lev_ctrl_CC73_EXT          = 0xc9, ///< Sound Ctrl. 4 - Attack Time (MIDI Controller 73) [gig format extension]
+                 _lev_ctrl_CC74_EXT          = 0xca, ///< Sound Ctrl. 5 - Brightness (MIDI Controller 74) [gig format extension]
+                 _lev_ctrl_CC75_EXT          = 0xcb, ///< Sound Ctrl. 6 - Decay Time (MIDI Controller 75) [gig format extension]
+                 _lev_ctrl_CC76_EXT          = 0xcc, ///< Sound Ctrl. 7 - Vibrato Rate (MIDI Controller 76) [gig format extension]
+                 _lev_ctrl_CC77_EXT          = 0xcd, ///< Sound Ctrl. 8 - Vibrato Depth (MIDI Controller 77) [gig format extension]
+                 _lev_ctrl_CC78_EXT          = 0xce, ///< Sound Ctrl. 9 - Vibrato Delay (MIDI Controller 78) [gig format extension]
+                 _lev_ctrl_CC79_EXT          = 0xcf, ///< Sound Ctrl. 10 (MIDI Controller 79) [gig format extension]
+                 _lev_ctrl_CC84_EXT          = 0xd4, ///< Portamento Control (MIDI Controller 84) [gig format extension]
+                 _lev_ctrl_CC85_EXT          = 0xd5, ///< MIDI Controller 85 [gig format extension]
+                 _lev_ctrl_CC86_EXT          = 0xd6, ///< MIDI Controller 86 [gig format extension]
+                 _lev_ctrl_CC87_EXT          = 0xd7, ///< MIDI Controller 87 [gig format extension]
+                 _lev_ctrl_CC89_EXT          = 0xd9, ///< MIDI Controller 89 [gig format extension]
+                 _lev_ctrl_CC90_EXT          = 0xda, ///< MIDI Controller 90 [gig format extension]
+                 _lev_ctrl_CC96_EXT          = 0xe0, ///< Data Increment (MIDI Controller 96) [gig format extension]
+                 _lev_ctrl_CC97_EXT          = 0xe1, ///< Data Decrement (MIDI Controller 97) [gig format extension]
+                 _lev_ctrl_CC102_EXT         = 0xe6, ///< MIDI Controller 102 [gig format extension]
+                 _lev_ctrl_CC103_EXT         = 0xe7, ///< MIDI Controller 103 [gig format extension]
+                 _lev_ctrl_CC104_EXT         = 0xe8, ///< MIDI Controller 104 [gig format extension]
+                 _lev_ctrl_CC105_EXT         = 0xe9, ///< MIDI Controller 105 [gig format extension]
+                 _lev_ctrl_CC106_EXT         = 0xea, ///< MIDI Controller 106 [gig format extension]
+                 _lev_ctrl_CC107_EXT         = 0xeb, ///< MIDI Controller 107 [gig format extension]
+                 _lev_ctrl_CC108_EXT         = 0xec, ///< MIDI Controller 108 [gig format extension]
+                 _lev_ctrl_CC109_EXT         = 0xed, ///< MIDI Controller 109 [gig format extension]
+                 _lev_ctrl_CC110_EXT         = 0xee, ///< MIDI Controller 110 [gig format extension]
+                 _lev_ctrl_CC111_EXT         = 0xef, ///< MIDI Controller 111 [gig format extension]
+                 _lev_ctrl_CC112_EXT         = 0xf0, ///< MIDI Controller 112 [gig format extension]
+                 _lev_ctrl_CC113_EXT         = 0xf1, ///< MIDI Controller 113 [gig format extension]
+                 _lev_ctrl_CC114_EXT         = 0xf2, ///< MIDI Controller 114 [gig format extension]
+                 _lev_ctrl_CC115_EXT         = 0xf3, ///< MIDI Controller 115 [gig format extension]
+                 _lev_ctrl_CC116_EXT         = 0xf4, ///< MIDI Controller 116 [gig format extension]
+                 _lev_ctrl_CC117_EXT         = 0xf5, ///< MIDI Controller 117 [gig format extension]
+                 _lev_ctrl_CC118_EXT         = 0xf6, ///< MIDI Controller 118 [gig format extension]
+                 _lev_ctrl_CC119_EXT         = 0xf7  ///< MIDI Controller 119 [gig format extension]
              } _lev_ctrl_t;
              typedef std::map<uint32_t, double*> VelocityTableMap;
-Line 484 
 namespace gig {
+Line 569 
 namespace gig {
              static VelocityTableMap* pVelocityTables;            ///< Contains the tables corresponding to the various velocity parameters (VelocityResponseCurve and VelocityResponseDepth).
              double*                  pVelocityAttenuationTable;  ///< Points to the velocity table corresponding to the velocity parameters of this DimensionRegion.
              double*                  pVelocityReleaseTable;      ///< Points to the velocity table corresponding to the release velocity parameters of this DimensionRegion
+             double*                  pVelocityCutoffTable;       ///< Points to the velocity table corresponding to the filter velocity parameters of this DimensionRegion
+             Region*                  pRegion;
              leverage_ctrl_t DecodeLeverageController(_lev_ctrl_t EncodedController);
+             _lev_ctrl_t     EncodeLeverageController(leverage_ctrl_t DecodedController);
+             double* GetReleaseVelocityTable(curve_type_t releaseVelocityResponseCurve, uint8_t releaseVelocityResponseDepth);
+             double* GetCutoffVelocityTable(curve_type_t vcfVelocityCurve, uint8_t vcfVelocityDynamicRange, uint8_t vcfVelocityScale, vcf_cutoff_ctrl_t vcfCutoffController);
              double* GetVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling);
              double* CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling);
      };
-     /** Encapsulates sample waves used for playback. */
+     /** @brief Encapsulates sample waves used for playback.
+      *
+      * In case you created a new sample with File::AddSample(), you should
+      * first update all attributes with the desired meta informations
+      * (amount of channels, bit depth, sample rate, etc.), then call
+      * Resize() with the desired sample size, followed by File::Save(), this
+      * will create the mandatory RIFF chunk which will hold the sample wave
+      * data and / or resize the file so you will be able to Write() the
+      * sample data directly to disk.
+      *
+      * @e Caution: for gig synthesis, most looping relevant information are
+      * retrieved from the respective DimensionRegon instead from the Sample
+      * itself. This was made for allowing different loop definitions for the
+      * same sample under different conditions.
+      */
      class Sample : public DLS::Sample {
          public:
-             uint16_t       SampleGroup;
              uint32_t       Manufacturer;      ///< Specifies the MIDI Manufacturer's Association (MMA) Manufacturer code for the sampler intended to receive this file's waveform. If no particular manufacturer is to be specified, a value of 0 should be used.
              uint32_t       Product;           ///< Specifies the MIDI model ID defined by the manufacturer corresponding to the Manufacturer field. If no particular manufacturer's product is to be specified, a value of 0 should be used.
-             uint32_t       SamplePeriod;      ///< Specifies the duration of time that passes during the playback of one sample in nanoseconds (normally equal to 1 / Samplers Per Second, where Samples Per Second is the value found in the format chunk).
+             uint32_t       SamplePeriod;      ///< Specifies the duration of time that passes during the playback of one sample in nanoseconds (normally equal to 1 / Samples Per Second, where Samples Per Second is the value found in the format chunk), don't bother to update this attribute, it won't be saved.
              uint32_t       MIDIUnityNote;     ///< Specifies the musical note at which the sample will be played at it's original sample rate.
              uint32_t       FineTune;          ///< Specifies the fraction of a semitone up from the specified MIDI unity note field. A value of 0x80000000 means 1/2 semitone (50 cents) and a value of 0x00000000 means no fine tuning between semitones.
              smpte_format_t SMPTEFormat;       ///< Specifies the Society of Motion Pictures and Television E time format used in the following <i>SMPTEOffset</i> field. If a value of 0 is set, <i>SMPTEOffset</i> should also be set to 0.
              uint32_t       SMPTEOffset;       ///< The SMPTE Offset value specifies the time offset to be used for the synchronization / calibration to the first sample in the waveform. This value uses a format of 0xhhmmssff where hh is a signed value that specifies the number of hours (-23 to 23), mm is an unsigned value that specifies the number of minutes (0 to 59), ss is an unsigned value that specifies the number of seconds (0 to 59) and ff is an unsigned value that specifies the number of frames (0 to -1).
-             uint32_t       Loops;             ///< Number of defined sample loops (so far only seen single loops in gig files - please report me if you encounter more!).
+             uint32_t       Loops;             ///< @e Caution: Use the respective field in the DimensionRegion instead of this one! (Intended purpose: Number of defined sample loops. So far only seen single loops in gig files - please report if you encounter more!)
              uint32_t       LoopID;            ///< Specifies the unique ID that corresponds to one of the defined cue points in the cue point list (only if Loops > 0), as the Gigasampler format only allows one loop definition at the moment, this attribute isn't really useful for anything.
-             loop_type_t    LoopType;          ///< The type field defines how the waveform samples will be looped (only if Loops > 0).
+             loop_type_t    LoopType;          ///< @e Caution: Use the respective field in the DimensionRegion instead of this one! (Intended purpose: The type field defines how the waveform samples will be looped.)
-             uint32_t       LoopStart;         ///< The start value specifies the offset (in sample points) in the waveform data of the first sample to be played in the loop (only if Loops > 0).
+             uint32_t       LoopStart;         ///< @e Caution: Use the respective field in the DimensionRegion instead of this one! (Intended purpose: The start value specifies the offset [in sample points] in the waveform data of the first sample to be played in the loop [only if Loops > 0].)
-             uint32_t       LoopEnd;           ///< The end value specifies the offset (in sample points) in the waveform data which represents the end of the loop (only if Loops > 0).
+             uint32_t       LoopEnd;           ///< @e Caution: Use the respective field in the DimensionRegion instead of this one! (Intended purpose: The end value specifies the offset [in sample points] in the waveform data which represents the end of the loop [only if Loops > 0].)
-             uint32_t       LoopSize;          ///< Length of the looping area (in sample points) which is equivalent to <i>LoopEnd - LoopStart</i>.
+             uint32_t       LoopSize;          ///< @e Caution: Use the respective fields in the DimensionRegion instead of this one! (Intended purpose: Length of the looping area [in sample points] which is equivalent to @code LoopEnd - LoopStart @endcode.)
-             uint32_t       LoopFraction;      ///< The fractional value specifies a fraction of a sample at which to loop (only if Loops > 0). This allows a loop to be fine tuned at a resolution greater than one sample. A value of 0 means no fraction, a value of 0x80000000 means 1/2 of a sample length. 0xFFFFFFFF is the smallest fraction of a sample that can be represented.
+             uint32_t       LoopFraction;      ///< The fractional value specifies a fraction of a sample at which to loop. This allows a loop to be fine tuned at a resolution greater than one sample. A value of 0 means no fraction, a value of 0x80000000 means 1/2 of a sample length. 0xFFFFFFFF is the smallest fraction of a sample that can be represented.
-             uint32_t       LoopPlayCount;     ///< Number of times the loop should be played (only if Loops > 0, a value of 0 = infinite).
+             uint32_t       LoopPlayCount;     ///< Number of times the loop should be played (a value of 0 = infinite).
              bool           Compressed;        ///< If the sample wave is compressed (probably just interesting for instrument and sample editors, as this library already handles the decompression in it's sample access methods anyway).
              uint32_t       TruncatedBits;     ///< For 24-bit compressed samples only: number of bits truncated during compression (0, 4 or 6)
              bool           Dithered;          ///< For 24-bit compressed samples only: if dithering was used during compression with bit reduction
-Line 524 
 namespace gig {
+Line 627 
 namespace gig {
              static void     DestroyDecompressionBuffer(buffer_t& DecompressionBuffer);
              // overridden methods
              void          ReleaseSampleData();
+             void          Resize(int iNewSize);
              unsigned long SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence = RIFF::stream_start);
-             unsigned long GetPos();
+             unsigned long GetPos() const;
              unsigned long Read(void* pBuffer, unsigned long SampleCount, buffer_t* pExternalDecompressionBuffer = NULL);
-             unsigned long ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState, buffer_t* pExternalDecompressionBuffer = NULL);
+             unsigned long ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState, DimensionRegion* pDimRgn, buffer_t* pExternalDecompressionBuffer = NULL);
+             unsigned long Write(void* pBuffer, unsigned long SampleCount);
+             Group*        GetGroup() const;
+             virtual void  UpdateChunks();
+             void CopyAssignMeta(const Sample* orig);
+             void CopyAssignWave(const Sample* orig);
          protected:
              static unsigned int  Instances;               ///< Number of instances of class Sample.
              static buffer_t      InternalDecompressionBuffer; ///< Buffer used for decompression as well as for truncation of 24 Bit -> 16 Bit samples.
+             Group*               pGroup;                  ///< pointer to the Group this sample belongs to (always not-NULL)
              unsigned long        FrameOffset;             ///< Current offset (sample points) in current sample frame (for decompression only).
              unsigned long*       FrameTable;              ///< For positioning within compressed samples only: stores the offset values for each frame.
              unsigned long        SamplePos;               ///< For compressed samples only: stores the current position (in sample points).
-Line 539 
 namespace gig {
+Line 649 
 namespace gig {
              unsigned long        SamplesPerFrame;         ///< For compressed samples only: number of samples in a full sample frame.
              buffer_t             RAMCache;                ///< Buffers samples (already uncompressed) in RAM.
              unsigned long        FileNo;                  ///< File number (> 0 when sample is stored in an extension file, 0 when it's in the gig)
+             RIFF::Chunk*         pCk3gix;
+             RIFF::Chunk*         pCkSmpl;
+             uint32_t             crc;                     ///< CRC-32 checksum of the raw sample data
              Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo = 0);
             ~Sample();
-             /**
-              * Swaps the order of the data words in the given memory area
-              * with a granularity given by \a WordSize.
-              *
-              * @param pData    - pointer to the memory area to be swapped
-              * @param AreaSize - size of the memory area to be swapped (in bytes)
-              * @param WordSize - size of the data words (in bytes)
-              */
-             inline void SwapMemoryArea(void* pData, unsigned long AreaSize, uint WordSize) {
-                 switch (WordSize) { // TODO: unefficient
-                     case 1: {
-                         uint8_t* pDst = (uint8_t*) pData;
-                         uint8_t  cache;
-                         unsigned long lo = 0, hi = AreaSize - 1;
-                         for (; lo < hi; hi--, lo++) {
-                             cache    = pDst[lo];
-                             pDst[lo] = pDst[hi];
-                             pDst[hi] = cache;
-                         }
-                         break;
-                     }
-                     case 2: {
-                         uint16_t* pDst = (uint16_t*) pData;
-                         uint16_t  cache;
-                         unsigned long lo = 0, hi = (AreaSize >> 1) - 1;
-                         for (; lo < hi; hi--, lo++) {
-                             cache    = pDst[lo];
-                             pDst[lo] = pDst[hi];
-                             pDst[hi] = cache;
-                         }
-                         break;
-                     }
-                     case 4: {
-                         uint32_t* pDst = (uint32_t*) pData;
-                         uint32_t  cache;
-                         unsigned long lo = 0, hi = (AreaSize >> 2) - 1;
-                         for (; lo < hi; hi--, lo++) {
-                             cache    = pDst[lo];
-                             pDst[lo] = pDst[hi];
-                             pDst[hi] = cache;
-                         }
-                         break;
-                     }
-                     default: {
-                         uint8_t* pCache = new uint8_t[WordSize]; // TODO: unefficient
-                         unsigned long lo = 0, hi = AreaSize - WordSize;
-                         for (; lo < hi; hi -= WordSize, lo += WordSize) {
-                             memcpy(pCache, (uint8_t*) pData + lo, WordSize);
-                             memcpy((uint8_t*) pData + lo, (uint8_t*) pData + hi, WordSize);
-                             memcpy((uint8_t*) pData + hi, pCache, WordSize);
-                         }
-                         delete[] pCache;
-                         break;
-                     }
-                 }
-             }
-             inline long Min(long A, long B) {
-                 return (A > B) ? B : A;
-             }
-             inline long Abs(long val) { return (val > 0) ? val : -val; }
              // Guess size (in bytes) of a compressed sample
              inline unsigned long GuessSize(unsigned long samples) {
-Line 628 
 namespace gig {
+Line 681 
 namespace gig {
              void ScanCompressedSample();
              friend class File;
              friend class Region;
+             friend class Group; // allow to modify protected member pGroup
      };
      // TODO: <3dnl> list not used yet - not important though (just contains optional descriptions for the dimensions)
-     /** Defines <i>Region</i> information of an <i>Instrument</i>. */
+     /** @brief Defines Region information of an Instrument.
+      *
+      * A Region reflects a consecutive area on the keyboard. The individual
+      * regions in the gig format may not overlap with other regions (of the same
+      * instrument). Further, in the gig format a Region is merely a container
+      * for DimensionRegions (a.k.a. "Cases"). The Region itself does not provide
+      * the sample mapping or articulation informations used, even though the
+      * data structures indeed provide such informations. The latter is however
+      * just of historical nature, because the gig format was derived from the
+      * DLS format.
+      *
+      * Each Region consists of at least one or more DimensionRegions. The actual
+      * amount of DimensionRegions depends on which kind of "dimensions" are
+      * defined for this region, and on the split / zone amount for each of those
+      * dimensions.
+      */
      class Region : public DLS::Region {
          public:
-             unsigned int            Dimensions;               ///< Number of defined dimensions.
+             unsigned int            Dimensions;               ///< Number of defined dimensions, do not alter!
-             dimension_def_t         pDimensionDefinitions[8]; ///< Defines the five (gig2) or eight (gig3) possible dimensions (the dimension's controller and number of bits/splits).
+             dimension_def_t         pDimensionDefinitions[8]; ///< Defines the five (gig2) or eight (gig3) possible dimensions (the dimension's controller and number of bits/splits). Use AddDimension() and DeleteDimension() to create a new dimension or delete an existing one.
-             uint32_t                DimensionRegions;         ///< Total number of DimensionRegions this Region contains.
+             uint32_t                DimensionRegions;         ///< Total number of DimensionRegions this Region contains, do not alter!
-             DimensionRegion*        pDimensionRegions[256];   ///< Pointer array to the 32 (gig2) or 256 (gig3) possible dimension regions (reflects NULL for dimension regions not in use). Avoid to access the array directly and better use GetDimensionRegionByValue() instead, but of course in some cases it makes sense to use the array (e.g. iterating through all DimensionRegions).
+             DimensionRegion*        pDimensionRegions[256];   ///< Pointer array to the 32 (gig2) or 256 (gig3) possible dimension regions (reflects NULL for dimension regions not in use). Avoid to access the array directly and better use GetDimensionRegionByValue() instead, but of course in some cases it makes sense to use the array (e.g. iterating through all DimensionRegions). Use AddDimension() and DeleteDimension() to create a new dimension or delete an existing one (which will create or delete the respective dimension region(s) automatically).
-             unsigned int            Layers;                   ///< Amount of defined layers (1 - 32). A value of 1 actually means no layering, a value > 1 means there is Layer dimension. The same information can of course also be obtained by accessing pDimensionDefinitions.
+             unsigned int            Layers;                   ///< Amount of defined layers (1 - 32). A value of 1 actually means no layering, a value > 1 means there is Layer dimension. The same information can of course also be obtained by accessing pDimensionDefinitions. Do not alter this value!
+             // own methods
              DimensionRegion* GetDimensionRegionByValue(const uint DimValues[8]);
              DimensionRegion* GetDimensionRegionByBit(const uint8_t DimBits[8]);
              Sample*          GetSample();
+             void             AddDimension(dimension_def_t* pDimDef);
+             void             DeleteDimension(dimension_def_t* pDimDef);
+             dimension_def_t* GetDimensionDefinition(dimension_t type);
+             // overridden methods
+             virtual void     SetKeyRange(uint16_t Low, uint16_t High);
+             virtual void     UpdateChunks();
+             virtual void     CopyAssign(const Region* orig);
          protected:
-             uint8_t VelocityTable[128]; ///< For velocity dimensions with custom defined zone ranges only: used for fast converting from velocity MIDI value to dimension bit number.
              Region(Instrument* pInstrument, RIFF::List* rgnList);
              void LoadDimensionRegions(RIFF::List* rgn);
+             void UpdateVelocityTable();
              Sample* GetSampleFromWavePool(unsigned int WavePoolTableIndex, progress_t* pProgress = NULL);
+             void CopyAssign(const Region* orig, const std::map<Sample*,Sample*>* mSamples);
             ~Region();
              friend class Instrument;
      };
+     /** Abstract base class for all MIDI rules. */
+     class MidiRule {
+         public:
+             virtual ~MidiRule() { }
+         protected:
+             virtual void UpdateChunks(uint8_t* pData) const = 0;
+             friend class Instrument;
+     };
+     /** MIDI rule for triggering notes by control change events. */
+     class MidiRuleCtrlTrigger : public MidiRule {
+         public:
+             uint8_t ControllerNumber;   ///< MIDI controller number.
+             uint8_t Triggers;           ///< Number of triggers.
+             struct trigger_t {
+                 uint8_t TriggerPoint;   ///< The CC value to pass for the note to be triggered.
+                 bool    Descending;     ///< If the change in CC value should be downwards.
+                 uint8_t VelSensitivity; ///< How sensitive the velocity should be to the speed of the controller change.
+                 uint8_t Key;            ///< Key to trigger.
+                 bool    NoteOff;        ///< If a note off should be triggered instead of a note on.
+                 uint8_t Velocity;       ///< Velocity of the note to trigger. 255 means that velocity should depend on the speed of the controller change.
+                 bool    OverridePedal;  ///< If a note off should be triggered even if the sustain pedal is down.
+             } pTriggers[32];
+         protected:
+             MidiRuleCtrlTrigger(RIFF::Chunk* _3ewg);
+             MidiRuleCtrlTrigger();
+             void UpdateChunks(uint8_t* pData) const;
+             friend class Instrument;
+     };
+     /** MIDI rule for instruments with legato samples. */
+     class MidiRuleLegato : public MidiRule {
+         public:
+             uint8_t LegatoSamples;     ///< Number of legato samples per key in each direction (always 12)
+             bool BypassUseController;  ///< If a controller should be used to bypass the sustain note
+             uint8_t BypassKey;         ///< Key to be used to bypass the sustain note
+             uint8_t BypassController;  ///< Controller to be used to bypass the sustain note
+             uint16_t ThresholdTime;    ///< Maximum time (ms) between two notes that should be played legato
+             uint16_t ReleaseTime;      ///< Release time
+             range_t KeyRange;          ///< Key range for legato notes
+             uint8_t ReleaseTriggerKey; ///< Key triggering release samples
+             uint8_t AltSustain1Key;    ///< Key triggering alternate sustain samples
+             uint8_t AltSustain2Key;    ///< Key triggering a second set of alternate sustain samples
+         protected:
+             MidiRuleLegato(RIFF::Chunk* _3ewg);
+             MidiRuleLegato();
+             void UpdateChunks(uint8_t* pData) const;
+             friend class Instrument;
+     };
+     /** MIDI rule to automatically cycle through specified sequences of different articulations. The instrument must be using the smartmidi dimension. */
+     class MidiRuleAlternator : public MidiRule {
+         public:
+             uint8_t Articulations;     ///< Number of articulations in the instrument
+             String pArticulations[32]; ///< Names of the articulations
+             range_t PlayRange;         ///< Key range of the playable keys in the instrument
+             uint8_t Patterns;          ///< Number of alternator patterns
+             struct pattern_t {
+                 String Name;           ///< Name of the pattern
+                 int Size;              ///< Number of steps in the pattern
+                 const uint8_t& operator[](int i) const { /// Articulation to play
+                     return data[i];
+                 }
+                 uint8_t& operator[](int i) {
+                     return data[i];
+                 }
+             private:
+                 uint8_t data[32];
+             } pPatterns[32];           ///< A pattern is a sequence of articulation numbers
+             typedef enum {
+                 selector_none,
+                 selector_key_switch,
+                 selector_controller
+             } selector_t;
+             selector_t Selector;       ///< Method by which pattern is chosen
+             range_t KeySwitchRange;    ///< Key range for key switch selector
+             uint8_t Controller;        ///< CC number for controller selector
+             bool Polyphonic;           ///< If alternator should step forward only when all notes are off
+             bool Chained;              ///< If all patterns should be chained together
+         protected:
+             MidiRuleAlternator(RIFF::Chunk* _3ewg);
+             MidiRuleAlternator();
+             void UpdateChunks(uint8_t* pData) const;
+             friend class Instrument;
+     };
+     /** A MIDI rule not yet implemented by libgig. */
+     class MidiRuleUnknown : public MidiRule {
+         protected:
+             MidiRuleUnknown() { }
+             void UpdateChunks(uint8_t* pData) const { }
+             friend class Instrument;
+     };
      /** Provides all neccessary information for the synthesis of an <i>Instrument</i>. */
      class Instrument : protected DLS::Instrument {
          public:
              // derived attributes from DLS::Resource
-             DLS::Resource::pInfo;
+             using DLS::Resource::pInfo;
-             DLS::Resource::pDLSID;
+             using DLS::Resource::pDLSID;
              // derived attributes from DLS::Instrument
-             DLS::Instrument::IsDrum;
+             using DLS::Instrument::IsDrum;
-             DLS::Instrument::MIDIBank;
+             using DLS::Instrument::MIDIBank;
-             DLS::Instrument::MIDIBankCoarse;
+             using DLS::Instrument::MIDIBankCoarse;
-             DLS::Instrument::MIDIBankFine;
+             using DLS::Instrument::MIDIBankFine;
-             DLS::Instrument::MIDIProgram;
+             using DLS::Instrument::MIDIProgram;
-             DLS::Instrument::Regions;
+             using DLS::Instrument::Regions;
              // own attributes
              int32_t   Attenuation;       ///< in dB
              uint16_t  EffectSend;
-Line 676 
 namespace gig {
+Line 854 
 namespace gig {
              // derived methods from DLS::Resource
-             DLS::Resource::GetParent;
+             using DLS::Resource::GetParent;
              // overridden methods
              Region*   GetFirstRegion();
              Region*   GetNextRegion();
+             Region*   AddRegion();
+             void      DeleteRegion(Region* pRegion);
+             virtual void UpdateChunks();
+             virtual void CopyAssign(const Instrument* orig);
              // own methods
              Region*   GetRegion(unsigned int Key);
+             MidiRule* GetMidiRule(int i);
+             MidiRuleCtrlTrigger* AddMidiRuleCtrlTrigger();
+             MidiRuleLegato*      AddMidiRuleLegato();
+             MidiRuleAlternator*  AddMidiRuleAlternator();
+             void      DeleteMidiRule(int i);
          protected:
-             Region**  pRegions;            ///< Pointer array to the regions
              Region*   RegionKeyTable[128]; ///< fast lookup for the corresponding Region of a MIDI key
-             int       RegionIndex;
              Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress = NULL);
             ~Instrument();
+             void CopyAssign(const Instrument* orig, const std::map<Sample*,Sample*>* mSamples);
+             void UpdateRegionKeyTable();
              friend class File;
+             friend class Region; // so Region can call UpdateRegionKeyTable()
+         private:
+             MidiRule** pMidiRules;
+     };
+     /** @brief Group of Gigasampler objects
+      *
+      * Groups help to organize a huge collection of Gigasampler objects.
+      * Groups are not concerned at all for the synthesis, but they help
+      * sound library developers when working on complex instruments with an
+      * instrument editor (as long as that instrument editor supports it ;-).
+      *
+      * At the moment, it seems as only samples can be grouped together in
+      * the Gigasampler format yet. If this is false in the meantime, please
+      * tell us !
+      *
+      * A sample is always assigned to exactly one Group. This also means
+      * there is always at least one Group in a .gig file, no matter if you
+      * created one yet or not.
+      */
+     class Group {
+         public:
+             String Name; ///< Stores the name of this Group.
+             Sample* GetFirstSample();
+             Sample* GetNextSample();
+             void AddSample(Sample* pSample);
+         protected:
+             Group(File* file, RIFF::Chunk* ck3gnm);
+             virtual ~Group();
+             virtual void UpdateChunks();
+             void MoveAll();
+             friend class File;
+         private:
+             File*        pFile;
+             RIFF::Chunk* pNameChunk; ///< '3gnm' chunk
      };
-     // TODO: <3gnm> chunk not added yet (just contains the names of the sample groups)
      /** Parses Gigasampler files and provides abstract access to the data. */
      class File : protected DLS::File {
          public:
+             static const DLS::version_t VERSION_2;
+             static const DLS::version_t VERSION_3;
              // derived attributes from DLS::Resource
-             DLS::Resource::pInfo;
+             using DLS::Resource::pInfo;
-             DLS::Resource::pDLSID;
+             using DLS::Resource::pDLSID;
              // derived attributes from DLS::File
-             DLS::File::pVersion;
+             using DLS::File::pVersion;
-             DLS::File::Instruments;
+             using DLS::File::Instruments;
              // derived methods from DLS::Resource
-             DLS::Resource::GetParent;
+             using DLS::Resource::GetParent;
+             // derived methods from DLS::File
+             using DLS::File::Save;
+             using DLS::File::GetFileName;
+             using DLS::File::SetFileName;
              // overridden  methods
+             File();
              File(RIFF::File* pRIFF);
              Sample*     GetFirstSample(progress_t* pProgress = NULL); ///< Returns a pointer to the first <i>Sample</i> object of the file, <i>NULL</i> otherwise.
              Sample*     GetNextSample();      ///< Returns a pointer to the next <i>Sample</i> object of the file, <i>NULL</i> otherwise.
+             Sample*     GetSample(uint index);
+             Sample*     AddSample();
+             void        DeleteSample(Sample* pSample);
              Instrument* GetFirstInstrument(); ///< Returns a pointer to the first <i>Instrument</i> object of the file, <i>NULL</i> otherwise.
              Instrument* GetNextInstrument();  ///< Returns a pointer to the next <i>Instrument</i> object of the file, <i>NULL</i> otherwise.
              Instrument* GetInstrument(uint index, progress_t* pProgress = NULL);
-            ~File();
+             Instrument* AddInstrument();
+             Instrument* AddDuplicateInstrument(const Instrument* orig);
+             void        DeleteInstrument(Instrument* pInstrument);
+             Group*      GetFirstGroup(); ///< Returns a pointer to the first <i>Group</i> object of the file, <i>NULL</i> otherwise.
+             Group*      GetNextGroup();  ///< Returns a pointer to the next <i>Group</i> object of the file, <i>NULL</i> otherwise.
+             Group*      GetGroup(uint index);
+             Group*      GetGroup(String name);
+             Group*      AddGroup();
+             void        DeleteGroup(Group* pGroup);
+             void        DeleteGroupOnly(Group* pGroup);
+             void        SetAutoLoad(bool b);
+             bool        GetAutoLoad();
+             void        AddContentOf(File* pFile);
+             virtual    ~File();
+             virtual void UpdateChunks();
          protected:
-             typedef std::list<Sample*>     SampleList;
+             // overridden protected methods from DLS::File
-             typedef std::list<Instrument*> InstrumentList;
+             virtual void LoadSamples();
+             virtual void LoadInstruments();
-             SampleList*              pSamples;
+             virtual void LoadGroups();
-             SampleList::iterator     SamplesIterator;
+             // own protected methods
-             InstrumentList*          pInstruments;
+             virtual void LoadSamples(progress_t* pProgress);
-             InstrumentList::iterator InstrumentsIterator;
+             virtual void LoadInstruments(progress_t* pProgress);
+             void SetSampleChecksum(Sample* pSample, uint32_t crc);
-             void LoadSamples(progress_t* pProgress = NULL);
-             void LoadInstruments(progress_t* pProgress = NULL);
              friend class Region;
+             friend class Sample;
-             std::list<RIFF::File*> ExtensionFiles;
+             friend class Group; // so Group can access protected member pRIFF
+         private:
+             std::list<Group*>*          pGroups;
+             std::list<Group*>::iterator GroupsIterator;
+             bool                        bAutoLoad;
      };
-     /** Will be thrown whenever a gig specific error occurs while trying to access a Gigasampler File. */
+     /**
+      * Will be thrown whenever a gig specific error occurs while trying to
+      * access a Gigasampler File. Note: In your application you should
+      * better catch for RIFF::Exception rather than this one, except you
+      * explicitly want to catch and handle gig::Exception, DLS::Exception
+      * and RIFF::Exception independently, which usually shouldn't be
+      * necessary though.
+      */
      class Exception : public DLS::Exception {
          public:
              Exception(String Message);

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