/[svn]/libgig/trunk/src/gig.h
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revision 55 by schoenebeck, Tue Apr 27 09:06:07 2004 UTC revision 350 by schoenebeck, Tue Jan 25 21:54:24 2005 UTC
# Line 63  Line 63 
63  #define GIG_EG_CTR_ATTACK_INFLUENCE_EXTRACT(x)                  ((x >> 1) & 0x03)  #define GIG_EG_CTR_ATTACK_INFLUENCE_EXTRACT(x)                  ((x >> 1) & 0x03)
64  #define GIG_EG_CTR_DECAY_INFLUENCE_EXTRACT(x)                   ((x >> 3) & 0x03)  #define GIG_EG_CTR_DECAY_INFLUENCE_EXTRACT(x)                   ((x >> 3) & 0x03)
65  #define GIG_EG_CTR_RELEASE_INFLUENCE_EXTRACT(x)                 ((x >> 5) & 0x03)  #define GIG_EG_CTR_RELEASE_INFLUENCE_EXTRACT(x)                 ((x >> 5) & 0x03)
 //TODO: the transformation functions are not very accurate compared to the original ones  
 #define GIG_VELOCITY_TRANSFORM_NONLINEAR(x,dynamic,scale)       ((1.0-1.0/pow(x,1.0/(129.0-x))) * (1.0+scale/20.0) + (5.0-dynamic)*pow(x/300.0* (1.0+2.0*scale/128.0),2))  
 #define GIG_VELOCITY_TRANSFORM_LINEAR(x,dynamic,scale)          ((1.0+scale*3.0/128.0)/110.0*x+(5.0-dynamic)/5.0+(5.0-dynamic)*scale)  
 #define GIG_VELOCITY_TRANSFORM_SPECIAL(x,dynamic,scale)         ((1.0+9.0*scale/129.0)*(1.0-1.0/pow(x,1.0/(129.0-x))+pow(3.0*x/pow(129,2),2)+pow((5.0-dynamic)*x/500.0,2)))  
66    
67  /** Gigasampler specific classes and definitions */  /** Gigasampler specific classes and definitions */
68  namespace gig {  namespace gig {
# Line 278  namespace gig { Line 274  namespace gig {
274          vcf_type_bandreject   = 0x03          vcf_type_bandreject   = 0x03
275      } vcf_type_t;      } vcf_type_t;
276    
277      /** Defines the envelope of a crossfade. */      /**
278         * Defines the envelope of a crossfade.
279         *
280         * Note: The default value for crossfade points is 0,0,0,0. Layers with
281         * such a default value should be treated as if they would not have a
282         * crossfade, that is the crossfade volume factor should <b>always</b>
283         * be 1.0f for such layers.
284         */
285      struct crossfade_t {      struct crossfade_t {
286          #if WORDS_BIGENDIAN          #if WORDS_BIGENDIAN
         uint8_t in_start;   ///< Start position of fade in.  
         uint8_t in_end;     ///< End position of fade in.  
         uint8_t out_start;  ///< Start position of fade out.  
         uint8_t out_end;    ///< End postition of fade out.  
         #else // little endian  
287          uint8_t out_end;    ///< End postition of fade out.          uint8_t out_end;    ///< End postition of fade out.
288          uint8_t out_start;  ///< Start position of fade out.          uint8_t out_start;  ///< Start position of fade out.
289          uint8_t in_end;     ///< End position of fade in.          uint8_t in_end;     ///< End position of fade in.
290          uint8_t in_start;   ///< Start position of fade in.          uint8_t in_start;   ///< Start position of fade in.
291            #else // little endian
292            uint8_t in_start;   ///< Start position of fade in.
293            uint8_t in_end;     ///< End position of fade in.
294            uint8_t out_start;  ///< Start position of fade out.
295            uint8_t out_end;    ///< End postition of fade out.
296          #endif // WORDS_BIGENDIAN          #endif // WORDS_BIGENDIAN
297      };      };
298    
# Line 304  namespace gig { Line 307  namespace gig {
307      class File;      class File;
308      class Instrument;      class Instrument;
309      class Sample;      class Sample;
310        class Region;
311    
312      /** Encapsulates articulation information of a dimension region.      /** Encapsulates articulation information of a dimension region.
313       *       *
# Line 382  namespace gig { Line 386  namespace gig {
386              bool               VCFKeyboardTracking;           ///< If <i>true</i>: VCF cutoff frequence will be dependend to the note key position relative to the defined breakpoint value.              bool               VCFKeyboardTracking;           ///< If <i>true</i>: VCF cutoff frequence will be dependend to the note key position relative to the defined breakpoint value.
387              uint8_t            VCFKeyboardTrackingBreakpoint; ///< See VCFKeyboardTracking (0 - 127).              uint8_t            VCFKeyboardTrackingBreakpoint; ///< See VCFKeyboardTracking (0 - 127).
388              // Key Velocity Transformations              // Key Velocity Transformations
389              curve_type_t       VelocityResponseCurve;         ///< Defines a transformation curve to the incoming velocity values affecting amplitude.              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).
390              uint8_t            VelocityResponseDepth;         ///< Dynamic range of velocity affecting amplitude (0 - 4).              uint8_t            VelocityResponseDepth;         ///< Dynamic range of velocity affecting amplitude (0 - 4) (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead).
391              uint8_t            VelocityResponseCurveScaling;  ///< 0 - 127              uint8_t            VelocityResponseCurveScaling;  ///< 0 - 127 (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead)
392              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.
393              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).
394              uint8_t            ReleaseTriggerDecay;           ///< 0 - 8              uint8_t            ReleaseTriggerDecay;           ///< 0 - 8
# Line 450  namespace gig { Line 454  namespace gig {
454              double*                  pVelocityAttenuationTable;  ///< Points to the velocity table corresponding to the velocity parameters of this DimensionRegion.              double*                  pVelocityAttenuationTable;  ///< Points to the velocity table corresponding to the velocity parameters of this DimensionRegion.
455    
456              leverage_ctrl_t DecodeLeverageController(_lev_ctrl_t EncodedController);              leverage_ctrl_t DecodeLeverageController(_lev_ctrl_t EncodedController);
457                double* CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling);
458      };      };
459    
460      /** Encapsulates sample waves used for playback. */      /** Encapsulates sample waves used for playback. */
# Line 567  namespace gig { Line 572  namespace gig {
572      class Region : public DLS::Region {      class Region : public DLS::Region {
573          public:          public:
574              unsigned int            Dimensions;               ///< Number of defined dimensions.              unsigned int            Dimensions;               ///< Number of defined dimensions.
575              dimension_def_t         pDimensionDefinitions[5]; ///< Defines the five 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).
576              uint32_t                DimensionRegions;         ///< Total number of DimensionRegions this Region contains.              uint32_t                DimensionRegions;         ///< Total number of DimensionRegions this Region contains.
577              DimensionRegion*        pDimensionRegions[32];    ///< Pointer array to the 32 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).
578                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.
579    
580              DimensionRegion* GetDimensionRegionByValue(uint Dim4Val, uint Dim3Val, uint Dim2Val, uint Dim1Val, uint Dim0Val);              DimensionRegion* GetDimensionRegionByValue(const uint DimValues[8]);
581              DimensionRegion* GetDimensionRegionByBit(uint8_t Dim4Bit, uint8_t Dim3Bit, uint8_t Dim2Bit, uint8_t Dim1Bit, uint8_t Dim0Bit);              DimensionRegion* GetDimensionRegionByBit(const uint8_t DimBits[8]);
582              Sample*          GetSample();              Sample*          GetSample();
583          protected:          protected:
584              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.              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.
# Line 643  namespace gig { Line 649  namespace gig {
649              Instrument* GetFirstInstrument(); ///< Returns a pointer to the first <i>Instrument</i> object of the file, <i>NULL</i> otherwise.              Instrument* GetFirstInstrument(); ///< Returns a pointer to the first <i>Instrument</i> object of the file, <i>NULL</i> otherwise.
650              Instrument* GetNextInstrument();  ///< Returns a pointer to the next <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.
651              Instrument* GetInstrument(uint index);              Instrument* GetInstrument(uint index);
652             ~File() {};             ~File();
653          protected:          protected:
654              typedef std::list<Sample*>     SampleList;              typedef std::list<Sample*>     SampleList;
655              typedef std::list<Instrument*> InstrumentList;              typedef std::list<Instrument*> InstrumentList;
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