/[svn]/libgig/trunk/src/DLS.h
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revision 3477 by schoenebeck, Wed Feb 20 16:04:19 2019 UTC revision 3478 by schoenebeck, Thu Feb 21 20:10:08 2019 UTC
# Line 274  namespace DLS { Line 274  namespace DLS {
274              friend class Articulation;              friend class Articulation;
275      };      };
276    
277        /** @brief Abstract base class for all classes using RIFF::Chunks for persistency.
278         *
279         * This abstract base class defines the general interface for all classes
280         * which are using RIFF::Chunks to actually load and store their data
281         * persistently from/to disk.
282         */
283        class Storage {
284        public:
285            /** @brief Apply object's changes to the respective RIF::Chunks.
286             *
287             * This abstract interface method is intended to be implemented by the
288             * deriving classes by updating the respective RIFF chunks associated
289             * with the object such that those RIFF chunks reflect the object's
290             * current data (i.e. object's current member variables). So the purpose
291             * of this method is to prepare for saving the object's current state
292             * persistently to the actual RIFF file.
293             *
294             * After returning from this method the changes are just scheduled to be
295             * saved to the RIFF file, it is required to call File::Save()
296             * subsequently to make the changes actually persistent on file level.
297             *
298             * Usually there is no need to call this method directly from an
299             * application. This method is called automatically by libgig if one of
300             * the respective API methods is called to save the file persistently
301             * to disk (i.e. DLS::File::Save() or gig::File::Save()).
302             *
303             * @param pProgress - callback function for progress notification
304             */
305            virtual void UpdateChunks(progress_t* pProgress) = 0;
306    
307            /** @brief Remove all RIFF chunks associated with this object.
308             *
309             * This abstract interface method is intended to be implemented by the
310             * deriving classes by removing every RIFF::Chunk the deriving overall
311             * object is using to store the object in the final RIFF::File. In other
312             * words: the intention is to remove the deriving class(es)'s object
313             * persistently from the currently open file.
314             *
315             * Note that the RIFF::Chunks deletions is just scheduled after
316             * returning from this method. You have to call File::Save() to make
317             * these changes persistent on file level.
318             *
319             * Usually there is no need to call this method directly from an
320             * application. This method is called automatically by libgig if one of
321             * the respective API methods is called to remove the respective object
322             * persistently (i.e. File::DeleteInstrument() or File::DeleteSample()).
323             */
324            virtual void DeleteChunks() = 0;
325        };
326    
327      /** Provides access to the defined connections used for the synthesis model. */      /** Provides access to the defined connections used for the synthesis model. */
328      class Articulation {      class Articulation : public Storage {
329          public:          public:
330              Connection*  pConnections; ///< Points to the beginning of a <i>Connection</i> array.              Connection*  pConnections; ///< Points to the beginning of a <i>Connection</i> array.
331              uint32_t     Connections;  ///< Reflects the number of Connections.              uint32_t     Connections;  ///< Reflects the number of Connections.
332    
333              Articulation(RIFF::Chunk* artl);              Articulation(RIFF::Chunk* artl);
334              virtual ~Articulation();              virtual ~Articulation();
335              virtual void UpdateChunks(progress_t* pProgress);              virtual void UpdateChunks(progress_t* pProgress) OVERRIDE;
336                virtual void DeleteChunks() OVERRIDE;
337          protected:          protected:
338              RIFF::Chunk* pArticulationCk;              RIFF::Chunk* pArticulationCk;
339              uint32_t     HeaderSize;              uint32_t     HeaderSize;
340      };      };
341    
342      /** Abstract base class for classes that provide articulation information (thus for <i>Instrument</i> and <i>Region</i> class). */      /** Abstract base class for classes that provide articulation information (thus for <i>Instrument</i> and <i>Region</i> class). */
343      class Articulator {      class Articulator : public Storage {
344          public:          public:
345              Articulator(RIFF::List* ParentList);              Articulator(RIFF::List* ParentList);
346              Articulation* GetFirstArticulation();              Articulation* GetFirstArticulation();
347              Articulation* GetNextArticulation();              Articulation* GetNextArticulation();
348              virtual void  UpdateChunks(progress_t* pProgress);              virtual void  UpdateChunks(progress_t* pProgress) OVERRIDE;
349                virtual void  DeleteChunks() OVERRIDE;
350              virtual void  CopyAssign(const Articulator* orig);              virtual void  CopyAssign(const Articulator* orig);
351          protected:          protected:
352              typedef std::list<Articulation*> ArticulationList;              typedef std::list<Articulation*> ArticulationList;
# Line 307  namespace DLS { Line 359  namespace DLS {
359      };      };
360    
361      /** Optional information for DLS files, instruments, samples, etc. */      /** Optional information for DLS files, instruments, samples, etc. */
362      class Info {      class Info : public Storage {
363          public:          public:
364              String Name;             ///< <INAM-ck>. Stores the title of the subject of the file, such as, Seattle From Above.              String Name;             ///< <INAM-ck>. Stores the title of the subject of the file, such as, Seattle From Above.
365              String ArchivalLocation; ///< <IARL-ck>. Indicates where the subject of the file is stored.              String ArchivalLocation; ///< <IARL-ck>. Indicates where the subject of the file is stored.
# Line 336  namespace DLS { Line 388  namespace DLS {
388              Info(RIFF::List* list);              Info(RIFF::List* list);
389              void SetFixedStringLengths(const string_length_t* lengths);              void SetFixedStringLengths(const string_length_t* lengths);
390              virtual ~Info();              virtual ~Info();
391              virtual void UpdateChunks(progress_t* pProgress);              virtual void UpdateChunks(progress_t* pProgress) OVERRIDE;
392                virtual void DeleteChunks() OVERRIDE;
393              virtual void CopyAssign(const Info* orig);              virtual void CopyAssign(const Info* orig);
394          private:          private:
395              RIFF::List*            pResourceListChunk;              RIFF::List*            pResourceListChunk;
# Line 347  namespace DLS { Line 400  namespace DLS {
400      };      };
401    
402      /** Abstract base class which encapsulates data structures which all DLS resources are able to provide. */      /** Abstract base class which encapsulates data structures which all DLS resources are able to provide. */
403      class Resource {      class Resource : public Storage {
404          public:          public:
405              Info*    pInfo;  ///< Points (in any case) to an <i>Info</i> object, providing additional, optional infos and comments.              Info*    pInfo;  ///< Points (in any case) to an <i>Info</i> object, providing additional, optional infos and comments.
406              dlsid_t* pDLSID; ///< Points to a <i>dlsid_t</i> structure if the file provided a DLS ID else is <i>NULL</i>.              dlsid_t* pDLSID; ///< Points to a <i>dlsid_t</i> structure if the file provided a DLS ID else is <i>NULL</i>.
407    
408              Resource* GetParent() { return pParent; }              Resource* GetParent() { return pParent; }
409              const Resource* GetParent() const { return pParent; }              const Resource* GetParent() const { return pParent; }
410              virtual void UpdateChunks(progress_t* pProgress);              virtual void UpdateChunks(progress_t* pProgress) OVERRIDE;
411                virtual void DeleteChunks() OVERRIDE;
412              void GenerateDLSID();              void GenerateDLSID();
413              static void GenerateDLSID(dlsid_t* pDLSID);              static void GenerateDLSID(dlsid_t* pDLSID);
414              virtual void CopyAssign(const Resource* orig);              virtual void CopyAssign(const Resource* orig);
# Line 367  namespace DLS { Line 421  namespace DLS {
421      };      };
422    
423      /** Abstract base class which provides mandatory informations about sample players in general. */      /** Abstract base class which provides mandatory informations about sample players in general. */
424      class Sampler {      class Sampler : public Storage {
425          public:          public:
426              uint8_t        UnityNote;              uint8_t        UnityNote;
427              int16_t        FineTune;              int16_t        FineTune;
# Line 380  namespace DLS { Line 434  namespace DLS {
434              void AddSampleLoop(sample_loop_t* pLoopDef);              void AddSampleLoop(sample_loop_t* pLoopDef);
435              void DeleteSampleLoop(sample_loop_t* pLoopDef);              void DeleteSampleLoop(sample_loop_t* pLoopDef);
436              virtual void SetGain(int32_t gain);              virtual void SetGain(int32_t gain);
437              virtual void UpdateChunks(progress_t* pProgress);              virtual void UpdateChunks(progress_t* pProgress) OVERRIDE;
438                virtual void DeleteChunks() OVERRIDE;
439              virtual void CopyAssign(const Sampler* orig);              virtual void CopyAssign(const Sampler* orig);
440          protected:          protected:
441              RIFF::List*    pParentList;              RIFF::List*    pParentList;
# Line 416  namespace DLS { Line 471  namespace DLS {
471              file_offset_t SetPos(file_offset_t SampleCount, RIFF::stream_whence_t Whence = RIFF::stream_start);              file_offset_t SetPos(file_offset_t SampleCount, RIFF::stream_whence_t Whence = RIFF::stream_start);
472              file_offset_t Read(void* pBuffer, file_offset_t SampleCount);              file_offset_t Read(void* pBuffer, file_offset_t SampleCount);
473              file_offset_t Write(void* pBuffer, file_offset_t SampleCount);              file_offset_t Write(void* pBuffer, file_offset_t SampleCount);
474              virtual void  UpdateChunks(progress_t* pProgress);              virtual void  UpdateChunks(progress_t* pProgress) OVERRIDE;
475                virtual void  DeleteChunks() OVERRIDE;
476              virtual void  CopyAssign(const Sample* orig);              virtual void  CopyAssign(const Sample* orig);
477    
478          protected:          protected:
# Line 448  namespace DLS { Line 504  namespace DLS {
504              Sample*     GetSample();              Sample*     GetSample();
505              void        SetSample(Sample* pSample);              void        SetSample(Sample* pSample);
506              virtual void SetKeyRange(uint16_t Low, uint16_t High);              virtual void SetKeyRange(uint16_t Low, uint16_t High);
507              virtual void UpdateChunks(progress_t* pProgress);              virtual void UpdateChunks(progress_t* pProgress) OVERRIDE;
508                virtual void DeleteChunks() OVERRIDE;
509              virtual void CopyAssign(const Region* orig);              virtual void CopyAssign(const Region* orig);
510          protected:          protected:
511              RIFF::List* pCkRegion;              RIFF::List* pCkRegion;
# Line 476  namespace DLS { Line 533  namespace DLS {
533              Region*  GetNextRegion();              Region*  GetNextRegion();
534              Region*  AddRegion();              Region*  AddRegion();
535              void     DeleteRegion(Region* pRegion);              void     DeleteRegion(Region* pRegion);
536              virtual void UpdateChunks(progress_t* pProgress);              virtual void UpdateChunks(progress_t* pProgress) OVERRIDE;
537                virtual void DeleteChunks() OVERRIDE;
538              virtual void CopyAssign(const Instrument* orig);              virtual void CopyAssign(const Instrument* orig);
539          protected:          protected:
540              typedef std::list<Region*> RegionList;              typedef std::list<Region*> RegionList;
# Line 518  namespace DLS { Line 576  namespace DLS {
576              Instrument* AddInstrument();              Instrument* AddInstrument();
577              void        DeleteInstrument(Instrument* pInstrument);              void        DeleteInstrument(Instrument* pInstrument);
578              RIFF::File* GetExtensionFile(int index);              RIFF::File* GetExtensionFile(int index);
579              virtual void UpdateChunks(progress_t* pProgress);              virtual void UpdateChunks(progress_t* pProgress) OVERRIDE;
580              virtual void Save(const String& Path, progress_t* pProgress = NULL);              virtual void Save(const String& Path, progress_t* pProgress = NULL);
581              virtual void Save(progress_t* pProgress = NULL);              virtual void Save(progress_t* pProgress = NULL);
582              virtual ~File();              virtual ~File();
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