/[svn]/libgig/trunk/src/RIFF.h
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revision 518 by schoenebeck, Sun May 8 16:19:34 2005 UTC revision 2450 by persson, Wed May 8 17:53:07 2013 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) 2003-2013 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 24  Line 24 
24  #ifndef __RIFF_H__  #ifndef __RIFF_H__
25  #define __RIFF_H__  #define __RIFF_H__
26    
27  #define POSIX 1  #ifdef WIN32
28  #define DEBUG 0  # define POSIX 0
29    #endif
30    
31    #ifndef POSIX
32    # define POSIX 1
33    #endif
34    
35    #ifndef DEBUG
36    # define DEBUG 0
37    #endif
38    
39  #include <string>  #include <string>
40  #include <list>  #include <list>
# Line 43  Line 52 
52  # include <unistd.h>  # include <unistd.h>
53  #endif // POSIX  #endif // POSIX
54    
55    #ifdef _MSC_VER
56    // Visual C++ 2008 doesn't have stdint.h
57    typedef __int8 int8_t;
58    typedef __int16 int16_t;
59    typedef __int32 int32_t;
60    typedef __int64 int64_t;
61    typedef unsigned __int8 uint8_t;
62    typedef unsigned __int16 uint16_t;
63    typedef unsigned __int32 uint32_t;
64    typedef unsigned __int64 uint64_t;
65    #else
66  #include <stdint.h>  #include <stdint.h>
67    #endif
68    
69  //typedef unsigned char  uint8_t;  #ifdef WIN32
70  //typedef unsigned short uint16_t;  # include <windows.h>
71  //typedef unsigned int   uint32_t;    typedef unsigned int   uint;
72    #endif // WIN32
73    
74  #include <stdio.h>  #include <stdio.h>
75    
# Line 55  Line 77 
77  # define CHUNK_ID_RIFF  0x52494646  # define CHUNK_ID_RIFF  0x52494646
78  # define CHUNK_ID_RIFX  0x52494658  # define CHUNK_ID_RIFX  0x52494658
79  # define CHUNK_ID_LIST  0x4C495354  # define CHUNK_ID_LIST  0x4C495354
80    
81    # define LIST_TYPE_INFO 0x494E464F
82    # define CHUNK_ID_ICMT  0x49434D54
83    # define CHUNK_ID_ICOP  0x49434F50
84    # define CHUNK_ID_ICRD  0x49435244
85    # define CHUNK_ID_IENG  0x49454E47
86    # define CHUNK_ID_INAM  0x494E414D
87    # define CHUNK_ID_IPRD  0x49505244
88    # define CHUNK_ID_ISFT  0x49534654
89    
90    # define CHUNK_ID_SMPL  0x736D706C
91    
92  #else  // little endian  #else  // little endian
93  # define CHUNK_ID_RIFF  0x46464952  # define CHUNK_ID_RIFF  0x46464952
94  # define CHUNK_ID_RIFX  0x58464952  # define CHUNK_ID_RIFX  0x58464952
95  # define CHUNK_ID_LIST  0x5453494C  # define CHUNK_ID_LIST  0x5453494C
96    
97    # define LIST_TYPE_INFO 0x4F464E49
98    # define CHUNK_ID_ICMT  0x544D4349
99    # define CHUNK_ID_ICOP  0x504F4349
100    # define CHUNK_ID_ICRD  0x44524349
101    # define CHUNK_ID_IENG  0x474E4549
102    # define CHUNK_ID_INAM  0x4D414E49
103    # define CHUNK_ID_IPRD  0x44525049
104    # define CHUNK_ID_ISFT  0x54465349
105    
106    # define CHUNK_ID_SMPL  0x6C706D73
107    
108  #endif // WORDS_BIGENDIAN  #endif // WORDS_BIGENDIAN
109    
110  #define CHUNK_HEADER_SIZE       8  #define CHUNK_HEADER_SIZE       8
# Line 66  Line 112 
112  #define RIFF_HEADER_SIZE        12  #define RIFF_HEADER_SIZE        12
113    
114    
115  /** RIFF specific classes and definitions */  /**
116     * @brief RIFF specific classes and definitions
117     *
118     * The Resource Interchange File Format (RIFF) is a generic tree-structured
119     * meta-format which stores data in so called "chunks". It can be compared
120     * to XML, but in contrast to XML, RIFF is entirely binary encoded, that is
121     * not ASCII based. RIFF is used as basis for many file formats like AVI,
122     * WAV, DLS and of course the Gigasampler file format. ;-)
123     *
124     * RIFF chunks can be seen as containers for data. There are two distinct
125     * types of chunks:
126     *
127     * - @e ordinary @e chunks are the leafs of the data tree which encapsulate
128     *   the actual data of the file (i.e. the sample data of a .wav file)
129     *
130     * - @e list @e chunks are the nodes of the data tree which hold an
131     *   arbitrary amount of subchunks (can be both, list chunks and/or ordinary
132     *   chunks)
133     */
134  namespace RIFF {  namespace RIFF {
135    
136      /* just symbol prototyping */      /* just symbol prototyping */
137      class Chunk;      class Chunk;
138      class List;      class List;
139        class File;
140    
141      typedef std::string String;      typedef std::string String;
142    
143        /** Whether file stream is open in read or in read/write mode. */
144        typedef enum {
145            stream_mode_read       = 0,
146            stream_mode_read_write = 1,
147            stream_mode_closed     = 2
148        } stream_mode_t;
149    
150      /** Current state of the file stream. */      /** Current state of the file stream. */
151      typedef enum {      typedef enum {
152          stream_ready       = 0,          stream_ready       = 0,
# Line 90  namespace RIFF { Line 162  namespace RIFF {
162          stream_end      = 3          stream_end      = 3
163      } stream_whence_t;      } stream_whence_t;
164    
165      /** Provides convenient methods to access data of RIFF chunks in general. */      /** Alignment of data bytes in memory (system dependant). */
166        typedef enum {
167            endian_little = 0,
168            endian_big    = 1,
169            endian_native = 2
170        } endian_t;
171    
172        /** @brief Ordinary RIFF Chunk
173         *
174         * Provides convenient methods to access data of ordinary RIFF chunks
175         * in general.
176         */
177      class Chunk {      class Chunk {
178          public:          public:
179              #if POSIX              Chunk(File* pFile, unsigned long StartPos, List* Parent);
             Chunk(int hFile, unsigned long StartPos, bool EndianNative, List* Parent);  
             #else  
             Chunk(FILE* hFile, unsigned long StartPos, bool EndianNative, List* Parent);  
             #endif // POSIX  
180              String         GetChunkIDString();              String         GetChunkIDString();
181              uint32_t       GetChunkID() { return ChunkID; };            ///< Chunk ID in unsigned integer representation.              uint32_t       GetChunkID() { return ChunkID; }             ///< Chunk ID in unsigned integer representation.
182              List*          GetParent()  { return pParent; };            ///< Returns pointer to the chunk's parent list chunk.              List*          GetParent()  { return pParent; }             ///< Returns pointer to the chunk's parent list chunk.
183              unsigned long  GetSize()    { return ChunkSize; };          ///< Chunk size in bytes (without header, thus the chunk data body)              unsigned long  GetSize()    { return CurrentChunkSize; }    ///< Chunk size in bytes (without header, thus the chunk data body)
184              unsigned long  GetPos()     { return ulPos; };              ///< Position within the chunk data body              unsigned long  GetNewSize() { return NewChunkSize;     }    ///< New chunk size if it was modified with Resize().
185              unsigned long  GetFilePos() { return ulStartPos + ulPos; }; ///< Current, actual offset in file.              unsigned long  GetPos()     { return ulPos; }               ///< Position within the chunk data body
186                unsigned long  GetFilePos() { return ulStartPos + ulPos; }  ///< Current, actual offset in file.
187              unsigned long  SetPos(unsigned long Where, stream_whence_t Whence = stream_start);              unsigned long  SetPos(unsigned long Where, stream_whence_t Whence = stream_start);
188              unsigned long  RemainingBytes();              unsigned long  RemainingBytes();
189              stream_state_t GetState();              stream_state_t GetState();
# Line 120  namespace RIFF { Line 200  namespace RIFF {
200              uint16_t       ReadUint16();              uint16_t       ReadUint16();
201              int32_t        ReadInt32();              int32_t        ReadInt32();
202              uint32_t       ReadUint32();              uint32_t       ReadUint32();
203              void*          LoadChunkData();     ///< Load the whole chunk body in memory (on success returns a pointer to the data in RAM, else NULL).              void           ReadString(String& s, int size);
204              void           ReleaseChunkData();  ///< Free loaded chunk body data from memory (RAM).              unsigned long  Write(void* pData, unsigned long WordCount, unsigned long WordSize);
205                unsigned long  WriteInt8(int8_t* pData,     unsigned long WordCount = 1);
206                unsigned long  WriteUint8(uint8_t* pData,   unsigned long WordCount = 1);
207                unsigned long  WriteInt16(int16_t* pData,   unsigned long WordCount = 1);
208                unsigned long  WriteUint16(uint16_t* pData, unsigned long WordCount = 1);
209                unsigned long  WriteInt32(int32_t* pData,   unsigned long WordCount = 1);
210                unsigned long  WriteUint32(uint32_t* pData, unsigned long WordCount = 1);
211                void*          LoadChunkData();
212                void           ReleaseChunkData();
213                void           Resize(int iNewSize);
214              virtual ~Chunk();              virtual ~Chunk();
215          protected:          protected:
216              uint32_t      ChunkID;              uint32_t      ChunkID;
217              uint32_t      ChunkSize;            /* in bytes */              uint32_t      CurrentChunkSize;             /* in bytes */
218                uint32_t      NewChunkSize;                 /* in bytes (if chunk was scheduled to be resized) */
219              List*         pParent;              List*         pParent;
220              #if POSIX              File*         pFile;
             int           hFile;  
             #else  
             FILE*         hFile;  
             #endif // POSIX  
221              unsigned long ulStartPos;           /* actual position in file where chunk (without header) starts */              unsigned long ulStartPos;           /* actual position in file where chunk (without header) starts */
222              unsigned long ulPos;                /* # of bytes from ulStartPos */              unsigned long ulPos;                /* # of bytes from ulStartPos */
             bool          bEndianNative;  
223              uint8_t*      pChunkData;              uint8_t*      pChunkData;
224                unsigned long ulChunkDataSize;
225    
226              Chunk();              Chunk(File* pFile);
227                Chunk(File* pFile, List* pParent, uint32_t uiChunkID, uint uiBodySize);
228              void          ReadHeader(unsigned long fPos);              void          ReadHeader(unsigned long fPos);
229                void          WriteHeader(unsigned long fPos);
230              unsigned long ReadSceptical(void* pData, unsigned long WordCount, unsigned long WordSize);              unsigned long ReadSceptical(void* pData, unsigned long WordCount, unsigned long WordSize);
231              inline void   swapBytes_16(void* Word) {              inline void   swapBytes_16(void* Word) {
232                  uint8_t byteCache = *((uint8_t*) Word);                  uint8_t byteCache = *((uint8_t*) Word);
# Line 171  namespace RIFF { Line 259  namespace RIFF {
259                  }                  }
260                  return result;                  return result;
261              }              }
262                virtual unsigned long WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset);
263                virtual void __resetPos(); ///< Sets Chunk's read/write position to zero.
264    
265                friend class List;
266      };      };
267    
268      /** Provides convenient methods to access data of RIFF list chunks and their subchunks. */      /** @brief RIFF List Chunk
269         *
270         * Provides convenient methods to access data of RIFF list chunks and
271         * their subchunks.
272         */
273      class List : public Chunk {      class List : public Chunk {
274          public:          public:
275              #if POSIX              List(File* pFile, unsigned long StartPos, List* Parent);
             List(int hFile, unsigned long StartPos, bool EndianNative, List* Parent);  
             #else  
             List(FILE* hFile, unsigned long StartPos, bool EndianNative, List* Parent);  
             #endif // POSIX  
276              String       GetListTypeString();              String       GetListTypeString();
277              uint32_t     GetListType() { return ListType; }   ///< Returns unsigned integer representation of the list's ID              uint32_t     GetListType() { return ListType; }   ///< Returns unsigned integer representation of the list's ID
278              Chunk*       GetSubChunk(uint32_t ChunkID);              Chunk*       GetSubChunk(uint32_t ChunkID);
# Line 193  namespace RIFF { Line 285  namespace RIFF {
285              unsigned int CountSubChunks(uint32_t ChunkID);              unsigned int CountSubChunks(uint32_t ChunkID);
286              unsigned int CountSubLists();              unsigned int CountSubLists();
287              unsigned int CountSubLists(uint32_t ListType);              unsigned int CountSubLists(uint32_t ListType);
288                Chunk*       AddSubChunk(uint32_t uiChunkID, uint uiBodySize);
289                List*        AddSubList(uint32_t uiListType);
290                void         DeleteSubChunk(Chunk* pSubChunk);
291                void         MoveSubChunk(Chunk* pSrc, Chunk* pDst);
292              virtual ~List();              virtual ~List();
293          protected:          protected:
294              typedef std::map<uint32_t, RIFF::Chunk*>  ChunkMap;              typedef std::map<uint32_t, RIFF::Chunk*>  ChunkMap;
# Line 204  namespace RIFF { Line 300  namespace RIFF {
300              ChunkList::iterator ChunksIterator;              ChunkList::iterator ChunksIterator;
301              ChunkList::iterator ListIterator;              ChunkList::iterator ListIterator;
302    
303              List();              List(File* pFile);
304                List(File* pFile, List* pParent, uint32_t uiListID);
305              void ReadHeader(unsigned long fPos);              void ReadHeader(unsigned long fPos);
306                void WriteHeader(unsigned long fPos);
307              void LoadSubChunks();              void LoadSubChunks();
308                void LoadSubChunksRecursively();
309                virtual unsigned long WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset);
310                virtual void __resetPos(); ///< Sets List Chunk's read/write position to zero and causes all sub chunks to do the same.
311                void DeleteChunkList();
312      };      };
313    
314      /** Parses arbitrary RIFF files and provides together with it's base classes convenient methods to walk through the RIFF tree. */      /** @brief RIFF File
315         *
316         * Handles arbitrary RIFF files and provides together with its base
317         * classes convenient methods to walk through, read and modify the
318         * file's RIFF tree.
319         */
320      class File : public List {      class File : public List {
321          public:          public:
322                File(uint32_t FileType);
323              File(const String& path);              File(const String& path);
324                stream_mode_t GetMode();
325                bool          SetMode(stream_mode_t NewMode);
326                void SetByteOrder(endian_t Endian);
327                String GetFileName();
328                virtual void Save();
329                virtual void Save(const String& path);
330              virtual ~File();              virtual ~File();
331            protected:
332                #if POSIX
333                int    hFileRead;  ///< handle / descriptor for reading from file
334                int    hFileWrite; ///< handle / descriptor for writing to (some) file
335                #elif defined(WIN32)
336                HANDLE hFileRead;  ///< handle / descriptor for reading from file
337                HANDLE hFileWrite; ///< handle / descriptor for writing to (some) file
338                #else
339                FILE*  hFileRead;  ///< handle / descriptor for reading from file
340                FILE*  hFileWrite; ///< handle / descriptor for writing to (some) file
341                #endif // POSIX
342                String Filename;
343                bool   bEndianNative;
344    
345                void LogAsResized(Chunk* pResizedChunk);
346                void UnlogResized(Chunk* pResizedChunk);
347                friend class Chunk;
348                friend class List;
349          private:          private:
350                stream_mode_t  Mode;
351                ChunkList ResizedChunks; ///< All chunks which have been resized (enlarged / shortened).
352    
353              unsigned long GetFileSize();              unsigned long GetFileSize();
354                void ResizeFile(unsigned long ulNewSize);
355                #if POSIX
356                unsigned long __GetFileSize(int hFile);
357                #elif defined(WIN32)
358                unsigned long __GetFileSize(HANDLE hFile);
359                #else
360                unsigned long __GetFileSize(FILE* hFile);
361                #endif
362                void Cleanup();
363      };      };
364    
365      /** Will be thrown whenever an error occurs while parsing a RIFF file. */      /**
366         * Will be thrown whenever an error occurs while handling a RIFF file.
367         */
368      class Exception {      class Exception {
369          public:          public:
370              String Message;              String Message;
371    
372              Exception(String Message) { Exception::Message = Message; };              Exception(String Message) { Exception::Message = Message; }
373              void PrintMessage();              void PrintMessage();
374              virtual ~Exception() {};              virtual ~Exception() {}
375      };      };
376    
377      String libraryName();      String libraryName();
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