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/* just symbol prototyping */ |
/* just symbol prototyping */ |
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class Chunk; |
class Chunk; |
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class List; |
class List; |
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class File; |
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typedef std::string String; |
typedef std::string String; |
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/** Whether file stream is open in read or in read/write mode. */ |
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typedef enum { |
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stream_mode_read = 0, |
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stream_mode_read_write = 1, |
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stream_mode_closed = 2 |
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} stream_mode_t; |
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/** Current state of the file stream. */ |
/** Current state of the file stream. */ |
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typedef enum { |
typedef enum { |
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stream_ready = 0, |
stream_ready = 0, |
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/** Provides convenient methods to access data of RIFF chunks in general. */ |
/** Provides convenient methods to access data of RIFF chunks in general. */ |
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class Chunk { |
class Chunk { |
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public: |
public: |
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#if POSIX |
Chunk(File* pFile, unsigned long StartPos, List* Parent); |
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Chunk(int hFile, unsigned long StartPos, bool EndianNative, List* Parent); |
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#else |
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Chunk(FILE* hFile, unsigned long StartPos, bool EndianNative, List* Parent); |
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#endif // POSIX |
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String GetChunkIDString(); |
String GetChunkIDString(); |
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uint32_t GetChunkID() { return ChunkID; }; ///< Chunk ID in unsigned integer representation. |
uint32_t GetChunkID() { return ChunkID; }; ///< Chunk ID in unsigned integer representation. |
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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. |
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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) |
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unsigned long GetNewSize() { return NewChunkSize; }; ///< New chunk size if it was modified with Resize(). |
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unsigned long GetPos() { return ulPos; }; ///< Position within the chunk data body |
unsigned long GetPos() { return ulPos; }; ///< Position within the chunk data body |
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unsigned long GetFilePos() { return ulStartPos + ulPos; }; ///< Current, actual offset in file. |
unsigned long GetFilePos() { return ulStartPos + ulPos; }; ///< Current, actual offset in file. |
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unsigned long SetPos(unsigned long Where, stream_whence_t Whence = stream_start); |
unsigned long SetPos(unsigned long Where, stream_whence_t Whence = stream_start); |
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uint16_t ReadUint16(); |
uint16_t ReadUint16(); |
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int32_t ReadInt32(); |
int32_t ReadInt32(); |
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uint32_t ReadUint32(); |
uint32_t ReadUint32(); |
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void* LoadChunkData(); ///< Load the whole chunk body in memory (on success returns a pointer to the data in RAM, else NULL). |
unsigned long Write(void* pData, unsigned long WordCount, unsigned long WordSize); |
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void ReleaseChunkData(); ///< Free loaded chunk body data from memory (RAM). |
unsigned long WriteInt8(int8_t* pData, unsigned long WordCount = 1); |
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unsigned long WriteUint8(uint8_t* pData, unsigned long WordCount = 1); |
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unsigned long WriteInt16(int16_t* pData, unsigned long WordCount = 1); |
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unsigned long WriteUint16(uint16_t* pData, unsigned long WordCount = 1); |
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unsigned long WriteInt32(int32_t* pData, unsigned long WordCount = 1); |
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unsigned long WriteUint32(uint32_t* pData, unsigned long WordCount = 1); |
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void* LoadChunkData(); |
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void ReleaseChunkData(); |
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void Resize(int iNewSize); |
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virtual ~Chunk(); |
virtual ~Chunk(); |
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protected: |
protected: |
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uint32_t ChunkID; |
uint32_t ChunkID; |
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uint32_t ChunkSize; /* in bytes */ |
uint32_t CurrentChunkSize; /* in bytes */ |
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uint32_t NewChunkSize; /* in bytes (if chunk was scheduled to be resized) */ |
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List* pParent; |
List* pParent; |
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#if POSIX |
File* pFile; |
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int hFile; |
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#else |
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FILE* hFile; |
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#endif // POSIX |
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unsigned long ulStartPos; /* actual position in file where chunk (without header) starts */ |
unsigned long ulStartPos; /* actual position in file where chunk (without header) starts */ |
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unsigned long ulPos; /* # of bytes from ulStartPos */ |
unsigned long ulPos; /* # of bytes from ulStartPos */ |
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bool bEndianNative; |
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uint8_t* pChunkData; |
uint8_t* pChunkData; |
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unsigned long ulChunkDataSize; |
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Chunk(); |
Chunk(File* pFile); |
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Chunk(File* pFile, List* pParent, uint32_t uiChunkID, uint uiBodySize); |
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void ReadHeader(unsigned long fPos); |
void ReadHeader(unsigned long fPos); |
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void WriteHeader(unsigned long fPos); |
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unsigned long ReadSceptical(void* pData, unsigned long WordCount, unsigned long WordSize); |
unsigned long ReadSceptical(void* pData, unsigned long WordCount, unsigned long WordSize); |
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inline void swapBytes_16(void* Word) { |
inline void swapBytes_16(void* Word) { |
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uint8_t byteCache = *((uint8_t*) Word); |
uint8_t byteCache = *((uint8_t*) Word); |
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} |
} |
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return result; |
return result; |
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} |
} |
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virtual unsigned long WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset); |
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virtual void __resetPos(); ///< Sets Chunk's read/write position to zero. |
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friend class List; |
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}; |
}; |
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/** Provides convenient methods to access data of RIFF list chunks and their subchunks. */ |
/** Provides convenient methods to access data of RIFF list chunks and their subchunks. */ |
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class List : public Chunk { |
class List : public Chunk { |
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public: |
public: |
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#if POSIX |
List(File* pFile, unsigned long StartPos, List* Parent); |
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List(int hFile, unsigned long StartPos, bool EndianNative, List* Parent); |
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#else |
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List(FILE* hFile, unsigned long StartPos, bool EndianNative, List* Parent); |
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#endif // POSIX |
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String GetListTypeString(); |
String GetListTypeString(); |
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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 |
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Chunk* GetSubChunk(uint32_t ChunkID); |
Chunk* GetSubChunk(uint32_t ChunkID); |
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unsigned int CountSubChunks(uint32_t ChunkID); |
unsigned int CountSubChunks(uint32_t ChunkID); |
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unsigned int CountSubLists(); |
unsigned int CountSubLists(); |
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unsigned int CountSubLists(uint32_t ListType); |
unsigned int CountSubLists(uint32_t ListType); |
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Chunk* AddSubChunk(uint32_t uiChunkID, uint uiBodySize); |
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List* AddSubList(uint32_t uiListType); |
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void DeleteSubChunk(Chunk* pSubChunk); |
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virtual ~List(); |
virtual ~List(); |
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protected: |
protected: |
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typedef std::map<uint32_t, RIFF::Chunk*> ChunkMap; |
typedef std::map<uint32_t, RIFF::Chunk*> ChunkMap; |
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ChunkList::iterator ChunksIterator; |
ChunkList::iterator ChunksIterator; |
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ChunkList::iterator ListIterator; |
ChunkList::iterator ListIterator; |
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List(); |
List(File* pFile); |
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List(File* pFile, List* pParent, uint32_t uiListID); |
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void ReadHeader(unsigned long fPos); |
void ReadHeader(unsigned long fPos); |
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void WriteHeader(unsigned long fPos); |
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void LoadSubChunks(); |
void LoadSubChunks(); |
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virtual unsigned long WriteChunk(unsigned long ulWritePos, unsigned long ulCurrentDataOffset); |
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virtual void __resetPos(); ///< Sets List Chunk's read/write position to zero and causes all sub chunks to do the same. |
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}; |
}; |
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/** 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. */ |
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class File : public List { |
class File : public List { |
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public: |
public: |
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File(uint32_t FileType); |
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File(const String& path); |
File(const String& path); |
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stream_mode_t GetMode(); |
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bool SetMode(stream_mode_t NewMode); |
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String GetFileName(); |
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virtual void Save(); |
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virtual void Save(const String& path); |
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virtual ~File(); |
virtual ~File(); |
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const String Filename; |
protected: |
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#if POSIX |
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int hFileRead; ///< handle / descriptor for reading from file |
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int hFileWrite; ///< handle / descriptor for writing to (some) file |
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#else |
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FILE* hFileRead; ///< handle / descriptor for reading from file |
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FILE* hFileWrite; ///< handle / descriptor for writing to (some) file |
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#endif // POSIX |
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String Filename; |
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bool bEndianNative; |
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253 |
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void LogAsResized(Chunk* pResizedChunk); |
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friend class Chunk; |
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friend class List; |
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private: |
private: |
257 |
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stream_mode_t Mode; |
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ChunkList ResizedChunks; ///< All chunks which have been resized (enlarged / shortened). |
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260 |
unsigned long GetFileSize(); |
unsigned long GetFileSize(); |
261 |
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void ResizeFile(unsigned long ulNewSize); |
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#if POSIX |
263 |
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unsigned long __GetFileSize(int hFile); |
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#else |
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unsigned long __GetFileSize(FILE* hFile); |
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#endif |
267 |
}; |
}; |
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/** Will be thrown whenever an error occurs while parsing a RIFF file. */ |
/** Will be thrown whenever an error occurs while parsing a RIFF file. */ |