/[svn]/libgig/trunk/src/gig.h
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revision 21 by schoenebeck, Thu Dec 25 01:09:08 2003 UTC revision 310 by capela, Fri Nov 26 00:14:50 2004 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   libgig - C++ cross-platform Gigasampler format file loader library    *   *   libgig - C++ cross-platform Gigasampler format file loader library    *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003 by Christian Schoenebeck                           *   *   Copyright (C) 2003, 2004 by Christian Schoenebeck                     *
6   *                         <cuse@users.sourceforge.net>                    *   *                               <cuse@users.sourceforge.net>              *
7   *                                                                         *   *                                                                         *
8   *   This library is free software; you can redistribute it and/or modify  *   *   This library is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# 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 168  namespace gig { Line 164  namespace gig {
164          vcf_res_ctrl_genpurpose6 = 3            ///< General Purpose Controller 6 (Button, MIDI Controller 81)          vcf_res_ctrl_genpurpose6 = 3            ///< General Purpose Controller 6 (Button, MIDI Controller 81)
165      } vcf_res_ctrl_t;      } vcf_res_ctrl_t;
166    
167      /** Defines how attenuation (=gain / VCA) is controlled by. */      /**
168      typedef enum {       * Defines a controller that has a certain contrained influence on a
169          attenuation_ctrl_none              = 0x00,       * particular synthesis parameter (used to define attenuation controller,
170          attenuation_ctrl_modwheel          = 0x03, ///< Modulation Wheel (MIDI Controller 1)       * EG1 controller and EG2 controller).
171          attenuation_ctrl_breath            = 0x05, ///< Breath Controller (Coarse, MIDI Controller 2)       *
172          attenuation_ctrl_foot              = 0x07, ///< Foot Pedal (Coarse, MIDI Controller 4)       * You should use the respective <i>typedef</i> (means either
173          attenuation_ctrl_effect1           = 0x0d, ///< Effect Controller 1 (Coarse, MIDI Controller 12)       * attenuation_ctrl_t, eg1_ctrl_t or eg2_ctrl_t) in your code!
174          attenuation_ctrl_effect2           = 0x0f, ///< Effect Controller 2 (Coarse, MIDI Controller 13)       */
175          attenuation_ctrl_genpurpose1       = 0x11, ///< General Purpose Controller 1 (Slider, MIDI Controller 16)      struct leverage_ctrl_t {
176          attenuation_ctrl_genpurpose2       = 0x13, ///< General Purpose Controller 2 (Slider, MIDI Controller 17)          typedef enum {
177          attenuation_ctrl_genpurpose3       = 0x15, ///< General Purpose Controller 3 (Slider, MIDI Controller 18)              type_none              = 0x00, ///< No controller defined
178          attenuation_ctrl_genpurpose4       = 0x17, ///< General Purpose Controller 4 (Slider, MIDI Controller 19)              type_channelaftertouch = 0x2f, ///< Channel Key Pressure
179          attenuation_ctrl_portamentotime    = 0x0b, ///< Portamento Time (Coarse, MIDI Controller 5)              type_velocity          = 0xff, ///< Key Velocity
180          attenuation_ctrl_sustainpedal      = 0x01, ///< Sustain Pedal (MIDI Controller 64)              type_controlchange     = 0xfe  ///< Ordinary MIDI control change controller, see field 'controller_number'
181          attenuation_ctrl_portamento        = 0x19, ///< Portamento (MIDI Controller 65)          } type_t;
182          attenuation_ctrl_sostenutopedal    = 0x1b, ///< Sostenuto Pedal (MIDI Controller 66)  
183          attenuation_ctrl_softpedal         = 0x09, ///< Soft Pedal (MIDI Controller 67)          type_t type;              ///< Controller type
184          attenuation_ctrl_genpurpose5       = 0x1d, ///< General Purpose Controller 5 (Button, MIDI Controller 80)          uint   controller_number; ///< MIDI controller number if this controller is a control change controller, 0 otherwise
185          attenuation_ctrl_genpurpose6       = 0x1f, ///< General Purpose Controller 6 (Button, MIDI Controller 81)      };
186          attenuation_ctrl_genpurpose7       = 0x21, ///< General Purpose Controller 7 (Button, MIDI Controller 82)  
187          attenuation_ctrl_genpurpose8       = 0x23, ///< General Purpose Controller 8 (Button, MIDI Controller 83)      /**
188          attenuation_ctrl_effect1depth      = 0x25, ///< Effect 1 Depth (MIDI Controller 91)       * Defines controller influencing attenuation.
189          attenuation_ctrl_effect2depth      = 0x27, ///< Effect 2 Depth (MIDI Controller 92)       *
190          attenuation_ctrl_effect3depth      = 0x29, ///< Effect 3 Depth (MIDI Controller 93)       * @see leverage_ctrl_t
191          attenuation_ctrl_effect4depth      = 0x2b, ///< Effect 4 Depth (MIDI Controller 94)       */
192          attenuation_ctrl_effect5depth      = 0x2d, ///< Effect 5 Depth (MIDI Controller 95)      typedef leverage_ctrl_t attenuation_ctrl_t;
193          attenuation_ctrl_channelaftertouch = 0x2f, ///< Channel Key Pressure  
194          attenuation_ctrl_velocity          = 0xff  ///< Key Velocity      /**
195      } attenuation_ctrl_t, eg1_ctrl_t, eg2_ctrl_t;       * Defines controller influencing envelope generator 1.
196         *
197         * @see leverage_ctrl_t
198         */
199        typedef leverage_ctrl_t eg1_ctrl_t;
200    
201        /**
202         * Defines controller influencing envelope generator 2.
203         *
204         * @see leverage_ctrl_t
205         */
206        typedef leverage_ctrl_t eg2_ctrl_t;
207    
208      /**      /**
209       * Defines the type of dimension, that is how the dimension zones (and       * Defines the type of dimension, that is how the dimension zones (and
# Line 282  namespace gig { Line 289  namespace gig {
289          #endif // WORDS_BIGENDIAN          #endif // WORDS_BIGENDIAN
290      };      };
291    
292        /** Reflects the current playback state for a sample. */
293        struct playback_state_t {
294            unsigned long position;          ///< Current position within the sample.
295            bool          reverse;           ///< If playback direction is currently backwards (in case there is a pingpong or reverse loop defined).
296            unsigned long loop_cycles_left;  ///< How many times the loop has still to be passed, this value will be decremented with each loop cycle.
297        };
298    
299      // just symbol prototyping      // just symbol prototyping
300      class File;      class File;
301      class Instrument;      class Instrument;
302      class Sample;      class Sample;
303        class Region;
304    
305      /** Encapsulates articulation information of a dimension region.      /** Encapsulates articulation information of a dimension region.
306       *       *
# Line 314  namespace gig { Line 329  namespace gig {
329              bool               EG1Hold;                       ///< If <i>true</i>, Decay1 stage should be postponed until the sample reached the sample loop start.              bool               EG1Hold;                       ///< If <i>true</i>, Decay1 stage should be postponed until the sample reached the sample loop start.
330              eg1_ctrl_t         EG1Controller;                 ///< MIDI Controller which has influence on sample amplitude EG parameters (attack, decay, release).              eg1_ctrl_t         EG1Controller;                 ///< MIDI Controller which has influence on sample amplitude EG parameters (attack, decay, release).
331              bool               EG1ControllerInvert;           ///< Invert values coming from defined EG1 controller.              bool               EG1ControllerInvert;           ///< Invert values coming from defined EG1 controller.
332              uint8_t            EG1ControllerAttackInfluence;  ///< Amount EG1 Controller has influence on the EG1 Attack time.              uint8_t            EG1ControllerAttackInfluence;  ///< Amount EG1 Controller has influence on the EG1 Attack time (0 - 3, where 0 means off).
333              uint8_t            EG1ControllerDecayInfluence;   ///< Amount EG1 Controller has influence on the EG1 Decay time.              uint8_t            EG1ControllerDecayInfluence;   ///< Amount EG1 Controller has influence on the EG1 Decay time (0 - 3, where 0 means off).
334              uint8_t            EG1ControllerReleaseInfluence; ///< Amount EG1 Controller has influence on the EG1 Release time.              uint8_t            EG1ControllerReleaseInfluence; ///< Amount EG1 Controller has influence on the EG1 Release time (0 - 3, where 0 means off).
335              double             LFO1Frequency;                 ///< Frequency of the sample amplitude LFO (0.10 - 10.00 Hz).              double             LFO1Frequency;                 ///< Frequency of the sample amplitude LFO (0.10 - 10.00 Hz).
336              uint16_t           LFO1InternalDepth;             ///< Firm pitch of the sample amplitude LFO (0 - 1200 cents).              uint16_t           LFO1InternalDepth;             ///< Firm pitch of the sample amplitude LFO (0 - 1200 cents).
337              uint16_t           LFO1ControlDepth;              ///< Controller depth influencing sample amplitude LFO pitch (0 - 1200 cents).              uint16_t           LFO1ControlDepth;              ///< Controller depth influencing sample amplitude LFO pitch (0 - 1200 cents).
# Line 333  namespace gig { Line 348  namespace gig {
348              double             EG2Release;                    ///< Release time of the filter cutoff EG (0.000 - 60.000s).              double             EG2Release;                    ///< Release time of the filter cutoff EG (0.000 - 60.000s).
349              eg2_ctrl_t         EG2Controller;                 ///< MIDI Controller which has influence on filter cutoff EG parameters (attack, decay, release).              eg2_ctrl_t         EG2Controller;                 ///< MIDI Controller which has influence on filter cutoff EG parameters (attack, decay, release).
350              bool               EG2ControllerInvert;           ///< Invert values coming from defined EG2 controller.              bool               EG2ControllerInvert;           ///< Invert values coming from defined EG2 controller.
351              uint8_t            EG2ControllerAttackInfluence;  ///< Amount EG2 Controller has influence on the EG2 Attack time.              uint8_t            EG2ControllerAttackInfluence;  ///< Amount EG2 Controller has influence on the EG2 Attack time (0 - 3, where 0 means off).
352              uint8_t            EG2ControllerDecayInfluence;   ///< Amount EG2 Controller has influence on the EG2 Decay time.              uint8_t            EG2ControllerDecayInfluence;   ///< Amount EG2 Controller has influence on the EG2 Decay time (0 - 3, where 0 means off).
353              uint8_t            EG2ControllerReleaseInfluence; ///< Amount EG2 Controller has influence on the EG2 Release time.              uint8_t            EG2ControllerReleaseInfluence; ///< Amount EG2 Controller has influence on the EG2 Release time (0 - 3, where 0 means off).
354              double             LFO2Frequency;                 ///< Frequency of the filter cutoff LFO (0.10 - 10.00 Hz).              double             LFO2Frequency;                 ///< Frequency of the filter cutoff LFO (0.10 - 10.00 Hz).
355              uint16_t           LFO2InternalDepth;             ///< Firm pitch of the filter cutoff LFO (0 - 1200 cents).              uint16_t           LFO2InternalDepth;             ///< Firm pitch of the filter cutoff LFO (0 - 1200 cents).
356              uint16_t           LFO2ControlDepth;              ///< Controller depth influencing filter cutoff LFO pitch (0 - 1200).              uint16_t           LFO2ControlDepth;              ///< Controller depth influencing filter cutoff LFO pitch (0 - 1200).
# Line 364  namespace gig { Line 379  namespace gig {
379              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.
380              uint8_t            VCFKeyboardTrackingBreakpoint; ///< See VCFKeyboardTracking (0 - 127).              uint8_t            VCFKeyboardTrackingBreakpoint; ///< See VCFKeyboardTracking (0 - 127).
381              // Key Velocity Transformations              // Key Velocity Transformations
382              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).
383              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).
384              uint8_t            VelocityResponseCurveScaling;  ///< 0 - 127              uint8_t            VelocityResponseCurveScaling;  ///< 0 - 127 (usually you don't have to interpret this parameter, use GetVelocityAttenuation() instead)
385              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.
386              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).
387              uint8_t            ReleaseTriggerDecay;           ///< 0 - 8              uint8_t            ReleaseTriggerDecay;           ///< 0 - 8
# Line 376  namespace gig { Line 391  namespace gig {
391              dim_bypass_ctrl_t  DimensionBypass;               ///< If defined, the MIDI controller can switch on/off the dimension in realtime.              dim_bypass_ctrl_t  DimensionBypass;               ///< If defined, the MIDI controller can switch on/off the dimension in realtime.
392              int8_t             Pan;                           ///< Panorama / Balance (-64..0..63 <-> left..middle..right)              int8_t             Pan;                           ///< Panorama / Balance (-64..0..63 <-> left..middle..right)
393              bool               SelfMask;                      ///< If <i>true</i>: high velocity notes will stop low velocity notes at the same note, with that you can save voices that wouldn't be audible anyway.              bool               SelfMask;                      ///< If <i>true</i>: high velocity notes will stop low velocity notes at the same note, with that you can save voices that wouldn't be audible anyway.
394              attenuation_ctrl_t AttenuationControl;            ///< MIDI Controller which has influence on the volume level of the sample (or entire sample group).              attenuation_ctrl_t AttenuationController;         ///< MIDI Controller which has influence on the volume level of the sample (or entire sample group).
395              bool               InvertAttenuationControl;      ///< Inverts the values coming from the defined Attenuation Controller.              bool               InvertAttenuationController;   ///< Inverts the values coming from the defined Attenuation Controller.
396              uint8_t            AttenuationControlTreshold;    ///< 0-127              uint8_t            AttenuationControllerThreshold;///< 0-127
397              uint8_t            ChannelOffset;                 ///< Audio output where the audio signal of the dimension region should be routed to (0 - 9).              uint8_t            ChannelOffset;                 ///< Audio output where the audio signal of the dimension region should be routed to (0 - 9).
398              bool               SustainDefeat;                 ///< If <i>true</i>: Sustain pedal will not hold a note.              bool               SustainDefeat;                 ///< If <i>true</i>: Sustain pedal will not hold a note.
399              bool               MSDecode;                      ///< Gigastudio flag: defines if Mid Side Recordings should be decoded.              bool               MSDecode;                      ///< Gigastudio flag: defines if Mid Side Recordings should be decoded.
# Line 397  namespace gig { Line 412  namespace gig {
412             ~DimensionRegion();             ~DimensionRegion();
413              friend class Region;              friend class Region;
414          private:          private:
415                typedef enum { ///< Used to decode attenuation, EG1 and EG2 controller
416                    _lev_ctrl_none              = 0x00,
417                    _lev_ctrl_modwheel          = 0x03, ///< Modulation Wheel (MIDI Controller 1)
418                    _lev_ctrl_breath            = 0x05, ///< Breath Controller (Coarse, MIDI Controller 2)
419                    _lev_ctrl_foot              = 0x07, ///< Foot Pedal (Coarse, MIDI Controller 4)
420                    _lev_ctrl_effect1           = 0x0d, ///< Effect Controller 1 (Coarse, MIDI Controller 12)
421                    _lev_ctrl_effect2           = 0x0f, ///< Effect Controller 2 (Coarse, MIDI Controller 13)
422                    _lev_ctrl_genpurpose1       = 0x11, ///< General Purpose Controller 1 (Slider, MIDI Controller 16)
423                    _lev_ctrl_genpurpose2       = 0x13, ///< General Purpose Controller 2 (Slider, MIDI Controller 17)
424                    _lev_ctrl_genpurpose3       = 0x15, ///< General Purpose Controller 3 (Slider, MIDI Controller 18)
425                    _lev_ctrl_genpurpose4       = 0x17, ///< General Purpose Controller 4 (Slider, MIDI Controller 19)
426                    _lev_ctrl_portamentotime    = 0x0b, ///< Portamento Time (Coarse, MIDI Controller 5)
427                    _lev_ctrl_sustainpedal      = 0x01, ///< Sustain Pedal (MIDI Controller 64)
428                    _lev_ctrl_portamento        = 0x19, ///< Portamento (MIDI Controller 65)
429                    _lev_ctrl_sostenutopedal    = 0x1b, ///< Sostenuto Pedal (MIDI Controller 66)
430                    _lev_ctrl_softpedal         = 0x09, ///< Soft Pedal (MIDI Controller 67)
431                    _lev_ctrl_genpurpose5       = 0x1d, ///< General Purpose Controller 5 (Button, MIDI Controller 80)
432                    _lev_ctrl_genpurpose6       = 0x1f, ///< General Purpose Controller 6 (Button, MIDI Controller 81)
433                    _lev_ctrl_genpurpose7       = 0x21, ///< General Purpose Controller 7 (Button, MIDI Controller 82)
434                    _lev_ctrl_genpurpose8       = 0x23, ///< General Purpose Controller 8 (Button, MIDI Controller 83)
435                    _lev_ctrl_effect1depth      = 0x25, ///< Effect 1 Depth (MIDI Controller 91)
436                    _lev_ctrl_effect2depth      = 0x27, ///< Effect 2 Depth (MIDI Controller 92)
437                    _lev_ctrl_effect3depth      = 0x29, ///< Effect 3 Depth (MIDI Controller 93)
438                    _lev_ctrl_effect4depth      = 0x2b, ///< Effect 4 Depth (MIDI Controller 94)
439                    _lev_ctrl_effect5depth      = 0x2d, ///< Effect 5 Depth (MIDI Controller 95)
440                    _lev_ctrl_channelaftertouch = 0x2f, ///< Channel Key Pressure
441                    _lev_ctrl_velocity          = 0xff  ///< Key Velocity
442                } _lev_ctrl_t;
443              typedef std::map<uint32_t, double*> VelocityTableMap;              typedef std::map<uint32_t, double*> VelocityTableMap;
444    
445              static uint              Instances;                  ///< Number of DimensionRegion instances.              static uint              Instances;                  ///< Number of DimensionRegion instances.
446              static VelocityTableMap* pVelocityTables;            ///< Contains the tables corresponding to the various velocity parameters (VelocityResponseCurve and VelocityResponseDepth).              static VelocityTableMap* pVelocityTables;            ///< Contains the tables corresponding to the various velocity parameters (VelocityResponseCurve and VelocityResponseDepth).
447              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.
448    
449                leverage_ctrl_t DecodeLeverageController(_lev_ctrl_t EncodedController);
450                double* CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling);
451      };      };
452    
453      /** Encapsulates sample waves used for playback. */      /** Encapsulates sample waves used for playback. */
# Line 436  namespace gig { Line 482  namespace gig {
482              unsigned long SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence = RIFF::stream_start);              unsigned long SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence = RIFF::stream_start);
483              unsigned long GetPos();              unsigned long GetPos();
484              unsigned long Read(void* pBuffer, unsigned long SampleCount);              unsigned long Read(void* pBuffer, unsigned long SampleCount);
485                unsigned long ReadAndLoop(void* pBuffer, unsigned long SampleCount, playback_state_t* pPlaybackState);
486          protected:          protected:
487              static unsigned int  Instances;               ///< Number of instances of class Sample.              static unsigned int  Instances;               ///< Number of instances of class Sample.
488              static unsigned long DecompressionBufferSize; ///< Current size of the decompression buffer.              static unsigned long DecompressionBufferSize; ///< Current size of the decompression buffer.
# Line 447  namespace gig { Line 494  namespace gig {
494    
495              Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset);              Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset);
496             ~Sample();             ~Sample();
497                /**
498                 * Swaps the order of the data words in the given memory area
499                 * with a granularity given by \a WordSize.
500                 *
501                 * @param pData    - pointer to the memory area to be swapped
502                 * @param AreaSize - size of the memory area to be swapped (in bytes)
503                 * @param WordSize - size of the data words (in bytes)
504                 */
505                inline void SwapMemoryArea(void* pData, unsigned long AreaSize, uint WordSize) {
506                    switch (WordSize) { // TODO: unefficient
507                        case 1: {
508                            uint8_t* pDst = (uint8_t*) pData;
509                            uint8_t  cache;
510                            unsigned long lo = 0, hi = AreaSize - 1;
511                            for (; lo < hi; hi--, lo++) {
512                                cache    = pDst[lo];
513                                pDst[lo] = pDst[hi];
514                                pDst[hi] = cache;
515                            }
516                            break;
517                        }
518                        case 2: {
519                            uint16_t* pDst = (uint16_t*) pData;
520                            uint16_t  cache;
521                            unsigned long lo = 0, hi = (AreaSize >> 1) - 1;
522                            for (; lo < hi; hi--, lo++) {
523                                cache    = pDst[lo];
524                                pDst[lo] = pDst[hi];
525                                pDst[hi] = cache;
526                            }
527                            break;
528                        }
529                        case 4: {
530                            uint32_t* pDst = (uint32_t*) pData;
531                            uint32_t  cache;
532                            unsigned long lo = 0, hi = (AreaSize >> 2) - 1;
533                            for (; lo < hi; hi--, lo++) {
534                                cache    = pDst[lo];
535                                pDst[lo] = pDst[hi];
536                                pDst[hi] = cache;
537                            }
538                            break;
539                        }
540                        default: {
541                            uint8_t* pCache = new uint8_t[WordSize]; // TODO: unefficient
542                            unsigned long lo = 0, hi = AreaSize - WordSize;
543                            for (; lo < hi; hi -= WordSize, lo += WordSize) {
544                                memcpy(pCache, (uint8_t*) pData + lo, WordSize);
545                                memcpy((uint8_t*) pData + lo, (uint8_t*) pData + hi, WordSize);
546                                memcpy((uint8_t*) pData + hi, pCache, WordSize);
547                            }
548                            delete[] pCache;
549                            break;
550                        }
551                    }
552                }
553                inline long Min(long A, long B) {
554                    return (A > B) ? B : A;
555                }
556                inline long Abs(long val) { return (val > 0) ? val : -val; }
557          private:          private:
558              void ScanCompressedSample();              void ScanCompressedSample();
559              friend class File;              friend class File;
# Line 461  namespace gig { Line 568  namespace gig {
568              dimension_def_t         pDimensionDefinitions[5]; ///< Defines the five possible dimensions (the dimension's controller and number of bits/splits).              dimension_def_t         pDimensionDefinitions[5]; ///< Defines the five possible dimensions (the dimension's controller and number of bits/splits).
569              uint32_t                DimensionRegions;         ///< Total number of DimensionRegions this Region contains.              uint32_t                DimensionRegions;         ///< Total number of DimensionRegions this Region contains.
570              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[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).
571                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.
572    
573              DimensionRegion* GetDimensionRegionByValue(uint Dim4Val, uint Dim3Val, uint Dim2Val, uint Dim1Val, uint Dim0Val);              DimensionRegion* GetDimensionRegionByValue(uint Dim4Val, uint Dim3Val, uint Dim2Val, uint Dim1Val, uint Dim0Val);
574              DimensionRegion* GetDimensionRegionByBit(uint8_t Dim4Bit, uint8_t Dim3Bit, uint8_t Dim2Bit, uint8_t Dim1Bit, uint8_t Dim0Bit);              DimensionRegion* GetDimensionRegionByBit(uint8_t Dim4Bit, uint8_t Dim3Bit, uint8_t Dim2Bit, uint8_t Dim1Bit, uint8_t Dim0Bit);
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