/[svn]/libgig/trunk/src/DLS.h
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revision 823 by schoenebeck, Fri Dec 23 01:38:50 2005 UTC revision 1180 by persson, Sat May 12 12:39:25 2007 UTC
# Line 1  Line 1 
1  /***************************************************************************  /***************************************************************************
2   *                                                                         *   *                                                                         *
3   *   libgig - C++ cross-platform Gigasampler format file loader library    *   *   libgig - C++ cross-platform Gigasampler format file access library    *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003-2005 by Christian Schoenebeck                      *   *   Copyright (C) 2003-2007 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  *
# Line 90  Line 90 
90  # define CHUNK_ID_IENG  0x474E4549  # define CHUNK_ID_IENG  0x474E4549
91  # define CHUNK_ID_IGNR  0x524E4749  # define CHUNK_ID_IGNR  0x524E4749
92  # define CHUNK_ID_IKEY  0x59454B49  # define CHUNK_ID_IKEY  0x59454B49
93  # define CHUNK_ID_IMED  0x44525049  # define CHUNK_ID_IMED  0x44454D49
94  # define CHUNK_ID_INAM  0x4D414E49  # define CHUNK_ID_INAM  0x4D414E49
95  # define CHUNK_ID_IPRD  0x44525049  # define CHUNK_ID_IPRD  0x44525049
96  # define CHUNK_ID_ISBJ  0x4A425349  # define CHUNK_ID_ISBJ  0x4A425349
# Line 112  Line 112 
112  # define CHUNK_ID_ART2  0x32747261  # define CHUNK_ID_ART2  0x32747261
113  #endif // WORDS_BIGENDIAN  #endif // WORDS_BIGENDIAN
114    
115  #define WAVE_FORMAT_PCM                 0x0001  #define DLS_WAVE_FORMAT_PCM                     0x0001
116    
117  //TODO: no support for conditional chunks <cdl> yet  //TODO: no support for conditional chunks <cdl> yet
118    
# Line 224  namespace DLS { Line 224  namespace DLS {
224    
225      /** Defines Sample Loop Points. */      /** Defines Sample Loop Points. */
226      struct sample_loop_t {      struct sample_loop_t {
227          uint32_t Size;          uint32_t Size;       ///< For internal usage only: usually reflects exactly @c sizeof(sample_loop_t), otherwise if the value is larger then the DLS format was extended!
228          uint32_t LoopType;          uint32_t LoopType;   ///< Defines how the waveform samples will be looped (appropriate loop types for the gig format are defined by gig::loop_type_t).
229          uint32_t LoopStart;          uint32_t LoopStart;  ///< The start value specifies the offset (in sample points) in the waveform data of the first sample point to be played in the loop.
230          uint32_t LoopLength;          uint32_t LoopLength; ///< Length of the looping area (in sample points).
231      };      };
232    
233      // just symbol prototyping      // just symbol prototyping
# Line 315  namespace DLS { Line 315  namespace DLS {
315              String Source;           ///< <ISRC-ck>. Identifies the name of the person or organization who supplied the original subject of the file.              String Source;           ///< <ISRC-ck>. Identifies the name of the person or organization who supplied the original subject of the file.
316              String SourceForm;       ///< <ISRF-ck>. Identifies the original form of the material that was digitized, such as record, sampling CD, TV sound track. This is not neccessarily the same as <i>Medium</i>.              String SourceForm;       ///< <ISRF-ck>. Identifies the original form of the material that was digitized, such as record, sampling CD, TV sound track. This is not neccessarily the same as <i>Medium</i>.
317              String Commissioned;     ///< <ICMS-ck>. Lists the name of the person or organization that commissioned the subject of the file, e.g., Pope Julian II.              String Commissioned;     ///< <ICMS-ck>. Lists the name of the person or organization that commissioned the subject of the file, e.g., Pope Julian II.
318                String Subject;          ///< <ISBJ-ck>. Describes the contents of the file.
319    
320                struct FixedStringLength {
321                    uint32_t chunkId;
322                    int length;
323                };
324                const FixedStringLength* FixedStringLengths; ///< List of IDs and string lengths for strings that should be stored in a fixed length format. This is used for gig files, not for ordinary DLS files.
325              Info(RIFF::List* list);              Info(RIFF::List* list);
326              virtual ~Info();              virtual ~Info();
327              virtual void UpdateChunks();              virtual void UpdateChunks();
328          private:          private:
329              RIFF::List* pResourceListChunk;              RIFF::List* pResourceListChunk;
330    
331              void LoadString(uint32_t ChunkID, RIFF::List* lstINFO, String& s);              static void LoadString(uint32_t ChunkID, RIFF::List* lstINFO, String& s);
332              void SaveString(uint32_t ChunkID, RIFF::List* lstINFO, const String& s, const String& sDefault);              void SaveString(uint32_t ChunkID, RIFF::List* lstINFO, const String& s, const String& sDefault);
333      };      };
334    
# Line 353  namespace DLS { Line 359  namespace DLS {
359              uint32_t       SampleLoops;  ///< Reflects the number of sample loops.              uint32_t       SampleLoops;  ///< Reflects the number of sample loops.
360              sample_loop_t* pSampleLoops; ///< Points to the beginning of a sample loop array, or is NULL if there are no loops defined.              sample_loop_t* pSampleLoops; ///< Points to the beginning of a sample loop array, or is NULL if there are no loops defined.
361    
362                void AddSampleLoop(sample_loop_t* pLoopDef);
363                void DeleteSampleLoop(sample_loop_t* pLoopDef);
364              virtual void UpdateChunks();              virtual void UpdateChunks();
365          protected:          protected:
366              RIFF::List*    pParentList;              RIFF::List*    pParentList;
# Line 372  namespace DLS { Line 380  namespace DLS {
380       */       */
381      class Sample : public Resource {      class Sample : public Resource {
382          public:          public:
383              uint16_t      FormatTag;             ///< Format ID of the waveform data (should be WAVE_FORMAT_PCM for DLS1 compliant files, this is also the default value if Sample was created with Instrument::AddSample()).              uint16_t      FormatTag;             ///< Format ID of the waveform data (should be DLS_WAVE_FORMAT_PCM for DLS1 compliant files, this is also the default value if Sample was created with Instrument::AddSample()).
384              uint16_t      Channels;              ///< Number of channels represented in the waveform data, e.g. 1 for mono, 2 for stereo (defaults to 1=mono if Sample was created with Instrument::AddSample() previously).              uint16_t      Channels;              ///< Number of channels represented in the waveform data, e.g. 1 for mono, 2 for stereo (defaults to 1=mono if Sample was created with Instrument::AddSample() previously).
385              uint32_t      SamplesPerSecond;      ///< Sampling rate at which each channel should be played (defaults to 44100 if Sample was created with Instrument::AddSample() previously).              uint32_t      SamplesPerSecond;      ///< Sampling rate at which each channel should be played (defaults to 44100 if Sample was created with Instrument::AddSample() previously).
386              uint32_t      AverageBytesPerSecond; ///< The average number of bytes per second at which the waveform data should be transferred (Playback software can estimate the buffer size using this value).              uint32_t      AverageBytesPerSecond; ///< The average number of bytes per second at which the waveform data should be transferred (Playback software can estimate the buffer size using this value).
# Line 442  namespace DLS { Line 450  namespace DLS {
450              Region*  GetFirstRegion();              Region*  GetFirstRegion();
451              Region*  GetNextRegion();              Region*  GetNextRegion();
452              Region*  AddRegion();              Region*  AddRegion();
453                void     MoveRegion(Region* pSrc, Region* pDst);
454              void     DeleteRegion(Region* pRegion);              void     DeleteRegion(Region* pRegion);
455              virtual void UpdateChunks();              virtual void UpdateChunks();
456          protected:          protected:
# Line 486  namespace DLS { Line 495  namespace DLS {
495              typedef std::list<Instrument*> InstrumentList;              typedef std::list<Instrument*> InstrumentList;
496    
497              RIFF::File*              pRIFF;              RIFF::File*              pRIFF;
498                std::list<RIFF::File*>   ExtensionFiles;
499              SampleList*              pSamples;              SampleList*              pSamples;
500              SampleList::iterator     SamplesIterator;              SampleList::iterator     SamplesIterator;
501              InstrumentList*          pInstruments;              InstrumentList*          pInstruments;
# Line 505  namespace DLS { Line 515  namespace DLS {
515              void __UpdateWavePoolTable();              void __UpdateWavePoolTable();
516      };      };
517    
518      /** Will be thrown whenever a DLS specific error occurs while trying to access a DLS File. */      /**
519         * Will be thrown whenever a DLS specific error occurs while trying to
520         * access a DLS File. Note: In your application you should better catch
521         * for RIFF::Exception rather than this one, except you explicitly want
522         * to catch and handle DLS::Exception and RIFF::Exception independently,
523         * which usually shouldn't be necessary though.
524         */
525      class Exception : public RIFF::Exception {      class Exception : public RIFF::Exception {
526          public:          public:
527              Exception(String Message);              Exception(String Message);
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