/[svn]/libgig/trunk/src/RIFF.h
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revision 780 by schoenebeck, Sun Sep 25 13:40:37 2005 UTC revision 933 by schoenebeck, Fri Nov 24 12:50:05 2006 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) 2003-2006 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 78  namespace RIFF { Line 78  namespace RIFF {
78    
79      /** Whether file stream is open in read or in read/write mode. */      /** Whether file stream is open in read or in read/write mode. */
80      typedef enum {      typedef enum {
81          stream_mode_read,          stream_mode_read       = 0,
82          stream_mode_read_write          stream_mode_read_write = 1,
83            stream_mode_closed     = 2
84      } stream_mode_t;      } stream_mode_t;
85    
86      /** Current state of the file stream. */      /** Current state of the file stream. */
# Line 144  namespace RIFF { Line 145  namespace RIFF {
145              unsigned long ulStartPos;           /* actual position in file where chunk (without header) starts */              unsigned long ulStartPos;           /* actual position in file where chunk (without header) starts */
146              unsigned long ulPos;                /* # of bytes from ulStartPos */              unsigned long ulPos;                /* # of bytes from ulStartPos */
147              uint8_t*      pChunkData;              uint8_t*      pChunkData;
148                unsigned long ulChunkDataSize;
149    
150              Chunk(File* pFile);              Chunk(File* pFile);
151              Chunk(File* pFile, List* pParent, uint32_t uiChunkID, uint uiBodySize);              Chunk(File* pFile, List* pParent, uint32_t uiChunkID, uint uiBodySize);
# Line 222  namespace RIFF { Line 224  namespace RIFF {
224              void ReadHeader(unsigned long fPos);              void ReadHeader(unsigned long fPos);
225              void WriteHeader(unsigned long fPos);              void WriteHeader(unsigned long fPos);
226              void LoadSubChunks();              void LoadSubChunks();
227                void LoadSubChunksRecursively();
228              virtual unsigned long WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset);              virtual unsigned long WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset);
229              virtual void __resetPos(); ///< Sets List Chunk's read/write position to zero and causes all sub chunks to do the same.              virtual void __resetPos(); ///< Sets List Chunk's read/write position to zero and causes all sub chunks to do the same.
230      };      };
# Line 229  namespace RIFF { Line 232  namespace RIFF {
232      /** Parses arbitrary RIFF files and provides together with it's base classes convenient methods to walk through the RIFF tree. */      /** Parses arbitrary RIFF files and provides together with it's base classes convenient methods to walk through the RIFF tree. */
233      class File : public List {      class File : public List {
234          public:          public:
235              File();              File(uint32_t FileType);
236              File(const String& path);              File(const String& path);
237              stream_mode_t GetMode();              stream_mode_t GetMode();
238              bool          SetMode(stream_mode_t NewMode);              bool          SetMode(stream_mode_t NewMode);
# Line 257  namespace RIFF { Line 260  namespace RIFF {
260    
261              unsigned long GetFileSize();              unsigned long GetFileSize();
262              void ResizeFile(unsigned long ulNewSize);              void ResizeFile(unsigned long ulNewSize);
263                #if POSIX
264                unsigned long __GetFileSize(int hFile);
265                #else
266                unsigned long __GetFileSize(FILE* hFile);
267                #endif
268      };      };
269    
270      /** Will be thrown whenever an error occurs while parsing a RIFF file. */      /** Will be thrown whenever an error occurs while parsing a RIFF file. */
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