diff options
Diffstat (limited to 'src/FileStream.h')
| -rw-r--r-- | src/FileStream.h | 70 |
1 files changed, 37 insertions, 33 deletions
diff --git a/src/FileStream.h b/src/FileStream.h index d00c82e..a44b48e 100644 --- a/src/FileStream.h +++ b/src/FileStream.h @@ -28,9 +28,9 @@ typedef bool (*STREAM_WRITE)( DWORD dwBytesToWrite // Number of bytes to read from the file ); -typedef bool (*STREAM_GETPOS)( +typedef bool (*STREAM_SETSIZE)( struct TFileStream * pStream, // Pointer to an open stream - ULONGLONG * pByteOffset // Pointer to store current file position + ULONGLONG FileSize // New size for the file, in bytes ); typedef bool (*STREAM_GETSIZE)( @@ -38,34 +38,36 @@ typedef bool (*STREAM_GETSIZE)( ULONGLONG * pFileSize // Receives the file size, in bytes ); -typedef bool (*STREAM_SETSIZE)( - struct TFileStream * pStream, // Pointer to an open stream - ULONGLONG FileSize // New size for the file, in bytes - ); - typedef bool (*STREAM_GETTIME)( struct TFileStream * pStream, ULONGLONG * pFT ); -typedef bool (*STREAM_SWITCH)( - struct TFileStream * pStream, - struct TFileStream * pNewStream +typedef bool (*STREAM_GETPOS)( + struct TFileStream * pStream, // Pointer to an open stream + ULONGLONG * pByteOffset // Pointer to store current file position ); typedef bool (*STREAM_GETBMP)( TFileStream * pStream, - TFileBitmap * pBitmap, + void * pvBitmap, DWORD Length, LPDWORD LengthNeeded ); +typedef bool (*STREAM_SWITCH)( + struct TFileStream * pStream, + struct TFileStream * pNewStream + ); + typedef void (*STREAM_CLOSE)( struct TFileStream * pStream ); //----------------------------------------------------------------------------- -// Local structures - part file structure +// Local structures - partial file structure and bitmap footer + +#define ID_FILE_BITMAP_FOOTER 0x33767470 // Signature of the file bitmap footer ('ptv3') typedef struct _PART_FILE_HEADER { @@ -89,6 +91,17 @@ typedef struct _PART_FILE_MAP_ENTRY } PART_FILE_MAP_ENTRY, *PPART_FILE_MAP_ENTRY; +typedef struct _FILE_BITMAP_FOOTER +{ + DWORD dwSignature; // 'ptv3' (MPQ_DATA_BITMAP_SIGNATURE) + DWORD dwAlways3; // Unknown, seems to always have value of 3 + DWORD dwBuildNumber; // Game build number for that MPQ + DWORD dwMapOffsetLo; // Low 32-bits of the offset of the bit map + DWORD dwMapOffsetHi; // High 32-bits of the offset of the bit map + DWORD dwBlockSize; // Size of one block (usually 0x4000 bytes) + +} FILE_BITMAP_FOOTER, *PFILE_BITMAP_FOOTER; + //----------------------------------------------------------------------------- // Local structures @@ -96,25 +109,16 @@ union TBaseData { struct { - ULONGLONG FileSize; // Size of the file - ULONGLONG FilePos; // Current file position - ULONGLONG FileTime; // Date/time of last modification of the file HANDLE hFile; // File handle } File; struct { - ULONGLONG FileSize; // Mapped file size - ULONGLONG FilePos; // Current stream position - ULONGLONG FileTime; // Date/time of last modification of the file LPBYTE pbFile; // Pointer to mapped view } Map; struct { - ULONGLONG FileSize; // Size of the internet file - ULONGLONG FilePos; // Current position in the file - ULONGLONG FileTime; // Date/time of last modification of the file HANDLE hInternet; // Internet handle HANDLE hConnect; // Connection to the internet server } Http; @@ -128,39 +132,39 @@ struct TFileStream // Stream provider functions STREAM_READ StreamRead; // Pointer to stream read function for this archive. Do not use directly. STREAM_WRITE StreamWrite; // Pointer to stream write function for this archive. Do not use directly. - STREAM_GETPOS StreamGetPos; // Pointer to function that returns current file position - STREAM_GETSIZE StreamGetSize; // Pointer to function returning file size STREAM_SETSIZE StreamSetSize; // Pointer to function changing file size + STREAM_GETSIZE StreamGetSize; // Pointer to function returning file size STREAM_GETTIME StreamGetTime; // Pointer to function retrieving the file time + STREAM_GETPOS StreamGetPos; // Pointer to function that returns current file position STREAM_GETBMP StreamGetBmp; // Pointer to function that retrieves the file bitmap STREAM_SWITCH StreamSwitch; // Pointer to function changing the stream to another file STREAM_CLOSE StreamClose; // Pointer to function closing the stream - // Stream provider data members - TCHAR szFileName[MAX_PATH]; // File name - DWORD dwFlags; // Stream flags - // Base provider functions STREAM_READ BaseRead; STREAM_WRITE BaseWrite; - STREAM_GETPOS BaseGetPos; // Pointer to function that returns current file position - STREAM_GETSIZE BaseGetSize; // Pointer to function returning file size STREAM_SETSIZE BaseSetSize; // Pointer to function changing file size - STREAM_GETTIME BaseGetTime; // Pointer to function retrieving the file time STREAM_CLOSE BaseClose; // Pointer to function closing the stream - // Base provider data members + ULONGLONG FileSize; // Size of the file + ULONGLONG FilePos; // Current file position + ULONGLONG FileTime; // Date/time of last modification of the file + TCHAR * szSourceName; // Name of the source file (might be HTTP file server or local file) + TCHAR * szFileName; // File name (self-relative pointer) + DWORD dwFlags; // Stream flags + TBaseData Base; // Base provider data // Followed by stream provider data, with variable length }; //----------------------------------------------------------------------------- -// Structure for linear stream +// Structures for linear stream struct TLinearStream : public TFileStream { - TFileBitmap * pBitmap; // Pointer to the stream bitmap + TFileStream * pMaster; // Master file for loading missing data blocks + TFileBitmap * pBitmap; // Pointer to the linear bitmap }; //----------------------------------------------------------------------------- |