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

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

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-revision 1180 by persson,
Sat May 12 12:39:25 2007 UTC
+revision 1358 by schoenebeck,
Sun Sep 30 18:13:33 2007 UTC
 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 319 
 namespace gig {
+Line 323 
 namespace gig {
          progress_t();
      };
+     /** @brief CRC-32 checksum implementation
+      *
+      * This class is used to calculate checksums of the sample data in
+      * a gig file. The checksums are stored in the 3crc chunk of the
+      * gig file and automatically updated when a sample is written
+      * with Sample::Write().
+      */
+     class CRC {
+     private:
+         uint32_t value;
+         static const uint32_t* table;
+         static uint32_t* initTable();
+     public:
+         CRC() {
+             reset();
+         }
+         void reset() {
+             value = 0xffffffff;
+         }
+         void update(unsigned char* buf, int len) {
+             for (int i = 0 ; i < len ; i++) {
+                 value = table[(value ^ buf[i]) & 0xff] ^ (value >> 8);
+             }
+         }
+         uint32_t getValue() {
+             return value ^ 0xffffffff;
+         }
+     };
      // just symbol prototyping
      class File;
      class Instrument;
-Line 392 
 namespace gig {
+Line 425 
 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 437 
 namespace gig {
+Line 470 
 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 483 
 namespace gig {
+Line 528 
 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 559 
 namespace gig {
+Line 607 
 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;
+             CRC                  crc;                     ///< CRC-32 checksum of the raw sample data
              Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo = 0);
             ~Sample();
-Line 601 
 namespace gig {
+Line 650 
 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 640 
 namespace gig {
+Line 692 
 namespace gig {
              // derived methods from DLS::Resource
              DLS::Resource::GetParent;
-             // derived methods from DLS::Instrument
-             DLS::Instrument::MoveRegion;
              // overridden methods
              Region*   GetFirstRegion();
              Region*   GetNextRegion();
-Line 657 
 namespace gig {
+Line 707 
 namespace gig {
             ~Instrument();
              void UpdateRegionKeyTable();
              friend class File;
+             friend class Region; // so Region can call UpdateRegionKeyTable()
      };
      /** @brief Group of Gigasampler objects
-Line 695 
 namespace gig {
+Line 746 
 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 734 
 namespace gig {
+Line 788 
 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

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