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

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-revision 1070 by persson,
Mon Mar  5 17:42:35 2007 UTC
+revision 1524 by schoenebeck,
Sun Nov 25 17:29:37 2007 UTC
 Line 2
   *                                                                         *
   *   libgig - C++ cross-platform Gigasampler format file access library    *
   *                                                                         *
-  *   Copyright (C) 2003-2006 by Christian Schoenebeck                      *
+  *   Copyright (C) 2003-2007 by Christian Schoenebeck                      *
   *                              <cuse@users.sourceforge.net>               *
   *                                                                         *
   *   This library is free software; you can redistribute it and/or modify  *
 Line 38
  # 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
-Line 50
+Line 52
  # 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
  /** Gigasampler specific classes and definitions */
-Line 210 
 namespace gig {
+Line 214 
 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 324 
 namespace gig {
+Line 330 
 namespace gig {
      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 390 
 namespace gig {
+Line 396 
 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, otherwise this is the minimum cutoff).
+             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 435 
 namespace gig {
+Line 441 
 namespace gig {
              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
+             DLS::Sampler::AddSampleLoop;
+             DLS::Sampler::DeleteSampleLoop;
              // overridden methods
+             virtual void SetGain(int32_t gain);
              virtual void UpdateChunks();
          protected:
              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(RIFF::List* _3ewl);
+             DimensionRegion(Region* pParent, RIFF::List* _3ewl);
+             DimensionRegion(RIFF::List* _3ewl, const DimensionRegion& src);
             ~DimensionRegion();
              friend class Region;
          private:
-Line 478 
 namespace gig {
+Line 499 
 namespace gig {
              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);
      };
-Line 494 
 namespace gig {
+Line 518 
 namespace gig {
       * 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:
-Line 504 
 namespace gig {
+Line 533 
 namespace gig {
              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 549 
 namespace gig {
+Line 578 
 namespace gig {
              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();
-Line 591 
 namespace gig {
+Line 621 
 namespace gig {
              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. 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);
+             // overridden methods
+             virtual void     SetKeyRange(uint16_t Low, uint16_t High);
              virtual void     UpdateChunks();
          protected:
              Region(Instrument* pInstrument, RIFF::List* rgnList);
-Line 645 
 namespace gig {
+Line 678 
 namespace gig {
             ~Instrument();
              void UpdateRegionKeyTable();
              friend class File;
+             friend class Region; // so Region can call UpdateRegionKeyTable()
      };
      /** @brief Group of Gigasampler objects
-Line 683 
 namespace gig {
+Line 717 
 namespace gig {
      /** 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;
              DLS::Resource::pDLSID;
-Line 711 
 namespace gig {
+Line 748 
 namespace gig {
              Group*      GetGroup(uint index);
              Group*      AddGroup();
              void        DeleteGroup(Group* pGroup);
+             void        DeleteGroupOnly(Group* pGroup);
+             void        SetAutoLoad(bool b);
+             bool        GetAutoLoad();
              virtual    ~File();
+             virtual void UpdateChunks();
          protected:
              // overridden protected methods from DLS::File
              virtual void LoadSamples();
-Line 720 
 namespace gig {
+Line 761 
 namespace gig {
              // own protected methods
              virtual void LoadSamples(progress_t* pProgress);
              virtual void LoadInstruments(progress_t* pProgress);
+             void SetSampleChecksum(Sample* pSample, uint32_t crc);
              friend class Region;
              friend class Sample;
              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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