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* * |
* * |
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* libgig - C++ cross-platform Gigasampler format file access library * |
* libgig - C++ cross-platform Gigasampler format file access library * |
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* * |
* * |
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* Copyright (C) 2003-2007 by Christian Schoenebeck * |
* Copyright (C) 2003-2010 by Christian Schoenebeck * |
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* <cuse@users.sourceforge.net> * |
* <cuse@users.sourceforge.net> * |
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* * |
* * |
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* This library is free software; you can redistribute it and/or modify * |
* This library is free software; you can redistribute it and/or modify * |
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# define LIST_TYPE_3EWL 0x3365776C |
# define LIST_TYPE_3EWL 0x3365776C |
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# define LIST_TYPE_3GRI 0x33677269 |
# define LIST_TYPE_3GRI 0x33677269 |
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# define LIST_TYPE_3GNL 0x33676E6C |
# define LIST_TYPE_3GNL 0x33676E6C |
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# define CHUNK_ID_SMPL 0x736D706C |
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# define CHUNK_ID_3GIX 0x33676978 |
# define CHUNK_ID_3GIX 0x33676978 |
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# define CHUNK_ID_3EWA 0x33657761 |
# define CHUNK_ID_3EWA 0x33657761 |
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# define CHUNK_ID_3LNK 0x336C6E6B |
# define CHUNK_ID_3LNK 0x336C6E6B |
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# define LIST_TYPE_3EWL 0x6C776533 |
# define LIST_TYPE_3EWL 0x6C776533 |
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# define LIST_TYPE_3GRI 0x69726733 |
# define LIST_TYPE_3GRI 0x69726733 |
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# define LIST_TYPE_3GNL 0x6C6E6733 |
# define LIST_TYPE_3GNL 0x6C6E6733 |
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# define CHUNK_ID_SMPL 0x6C706D73 |
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# define CHUNK_ID_3GIX 0x78696733 |
# define CHUNK_ID_3GIX 0x78696733 |
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# define CHUNK_ID_3EWA 0x61776533 |
# define CHUNK_ID_3EWA 0x61776533 |
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# define CHUNK_ID_3LNK 0x6B6E6C33 |
# define CHUNK_ID_3LNK 0x6B6E6C33 |
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progress_t(); |
progress_t(); |
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}; |
}; |
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/** @brief CRC-32 checksum implementation |
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* |
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* This class is used to calculate checksums of the sample data in |
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* a gig file. The checksums are stored in the 3crc chunk of the |
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* gig file and automatically updated when a sample is written |
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* with Sample::Write(). |
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*/ |
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class CRC { |
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private: |
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uint32_t value; |
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static const uint32_t* table; |
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static uint32_t* initTable(); |
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public: |
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CRC() { |
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reset(); |
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} |
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void reset() { |
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value = 0xffffffff; |
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} |
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void update(unsigned char* buf, int len) { |
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for (int i = 0 ; i < len ; i++) { |
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value = table[(value ^ buf[i]) & 0xff] ^ (value >> 8); |
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} |
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} |
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uint32_t getValue() { |
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return value ^ 0xffffffff; |
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} |
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}; |
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// just symbol prototyping |
// just symbol prototyping |
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class File; |
class File; |
326 |
class Instrument; |
class Instrument; |
576 |
unsigned long FileNo; ///< File number (> 0 when sample is stored in an extension file, 0 when it's in the gig) |
unsigned long FileNo; ///< File number (> 0 when sample is stored in an extension file, 0 when it's in the gig) |
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RIFF::Chunk* pCk3gix; |
RIFF::Chunk* pCk3gix; |
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RIFF::Chunk* pCkSmpl; |
RIFF::Chunk* pCkSmpl; |
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CRC crc; ///< CRC-32 checksum of the raw sample data |
uint32_t crc; ///< CRC-32 checksum of the raw sample data |
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Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo = 0); |
Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo = 0); |
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~Sample(); |
~Sample(); |
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friend class Instrument; |
friend class Instrument; |
638 |
}; |
}; |
639 |
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640 |
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/** Abstract base class for all MIDI rules. */ |
641 |
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class MidiRule { |
642 |
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public: |
643 |
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virtual ~MidiRule() { } |
644 |
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}; |
645 |
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646 |
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/** MIDI rule for triggering notes by control change events. */ |
647 |
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class MidiRuleCtrlTrigger : public MidiRule { |
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public: |
649 |
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uint8_t ControllerNumber; ///< MIDI controller number. |
650 |
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uint8_t Triggers; ///< Number of triggers. |
651 |
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struct trigger_t { |
652 |
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uint8_t TriggerPoint; ///< The CC value to pass for the note to be triggered. |
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bool Descending; ///< If the change in CC value should be downwards. |
654 |
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uint8_t VelSensitivity; ///< How sensitive the velocity should be to the speed of the controller change. |
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uint8_t Key; ///< Key to trigger. |
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bool NoteOff; ///< If a note off should be triggered instead of a note on. |
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uint8_t Velocity; ///< Velocity of the note to trigger. 255 means that velocity should depend on the speed of the controller change. |
658 |
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bool OverridePedal; ///< If a note off should be triggered even if the sustain pedal is down. |
659 |
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} pTriggers[32]; |
660 |
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661 |
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protected: |
662 |
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MidiRuleCtrlTrigger(RIFF::Chunk* _3ewg); |
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friend class Instrument; |
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}; |
665 |
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/** Provides all neccessary information for the synthesis of an <i>Instrument</i>. */ |
/** Provides all neccessary information for the synthesis of an <i>Instrument</i>. */ |
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class Instrument : protected DLS::Instrument { |
class Instrument : protected DLS::Instrument { |
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public: |
public: |
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virtual void UpdateChunks(); |
virtual void UpdateChunks(); |
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// own methods |
// own methods |
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Region* GetRegion(unsigned int Key); |
Region* GetRegion(unsigned int Key); |
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MidiRule* GetMidiRule(int i); |
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protected: |
protected: |
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Region* RegionKeyTable[128]; ///< fast lookup for the corresponding Region of a MIDI key |
Region* RegionKeyTable[128]; ///< fast lookup for the corresponding Region of a MIDI key |
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void UpdateRegionKeyTable(); |
void UpdateRegionKeyTable(); |
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friend class File; |
friend class File; |
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friend class Region; // so Region can call UpdateRegionKeyTable() |
friend class Region; // so Region can call UpdateRegionKeyTable() |
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private: |
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MidiRule** pMidiRules; |
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}; |
}; |
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/** @brief Group of Gigasampler objects |
/** @brief Group of Gigasampler objects |
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DLS::Resource::GetParent; |
DLS::Resource::GetParent; |
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// derived methods from DLS::File |
// derived methods from DLS::File |
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DLS::File::Save; |
DLS::File::Save; |
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DLS::File::GetFileName; |
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// overridden methods |
// overridden methods |
763 |
File(); |
File(); |
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File(RIFF::File* pRIFF); |
File(RIFF::File* pRIFF); |
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Group* AddGroup(); |
Group* AddGroup(); |
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void DeleteGroup(Group* pGroup); |
void DeleteGroup(Group* pGroup); |
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void DeleteGroupOnly(Group* pGroup); |
void DeleteGroupOnly(Group* pGroup); |
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void SetAutoLoad(bool b); |
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bool GetAutoLoad(); |
782 |
virtual ~File(); |
virtual ~File(); |
783 |
virtual void UpdateChunks(); |
virtual void UpdateChunks(); |
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protected: |
protected: |
794 |
friend class Sample; |
friend class Sample; |
795 |
friend class Group; // so Group can access protected member pRIFF |
friend class Group; // so Group can access protected member pRIFF |
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private: |
private: |
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static const DLS::Info::FixedStringLength FixedStringLengths[]; |
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std::list<Group*>* pGroups; |
std::list<Group*>* pGroups; |
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std::list<Group*>::iterator GroupsIterator; |
std::list<Group*>::iterator GroupsIterator; |
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bool bAutoLoad; |
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}; |
}; |
801 |
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/** |
/** |