Sample Code
Windows Driver Samples/ MSPLOT Plotter Driver Sample/ C++/ plotter/ compress.h/
/*++ Copyright (c) 1990-2003 Microsoft Corporation Module Name: compress.h Abstract: This module contains #defines and prototypes for the compress.c module. Author: 18-Feb-1994 Fri 09:50:29 created [Environment:] GDI Device Driver - Plotter. [Notes:] Revision History: --*/ #ifndef _COMPRESS_ #define _COMPRESS_ #define COMPRESS_MODE_NONE (DWORD)0xFFFFFFFF #define COMPRESS_MODE_ROW 0 #define COMPRESS_MODE_RUNLENGTH 1 #define COMPRESS_MODE_TIFF 2 #define COMPRESS_MODE_DELTA 3 #define COMPRESS_MODE_BLOCK 4 #define COMPRESS_MODE_ADAPT 5 #define RTLSF_MORE_SCAN 0x01 typedef struct _RTLSCANS { LPBYTE pbCompress; LPBYTE pbSeedRows[3]; DWORD MaxAdaptBufSize; WORD cEmptyDup; BYTE AdaptMethod; BYTE cAdaptBlk; DWORD cxBytes; DWORD cScans; BYTE Flags; BYTE Planes; BYTE Mask; BYTE CompressMode; } RTLSCANS, FAR *PRTLSCANS; // // The function protypes // VOID ExitRTLScans( PPDEV pPDev, PRTLSCANS pRTLScans ); VOID EnterRTLScans( PPDEV pPDev, PRTLSCANS pRTLScans, DWORD cx, DWORD cy, BOOL MonoBmp ); LONG CompressToDelta( _In_reads_bytes_(Size) LPBYTE pbSrc, _In_reads_bytes_(Size) LPBYTE pbSeedRow, _Out_writes_bytes_(Size) LPBYTE pbDst, LONG Size ); LONG CompressToTIFF( _In_reads_bytes_(Size) LPBYTE pbSrc, _Out_writes_bytes_(Size) LPBYTE pbDst, LONG Size ); LONG RTLCompression( _In_reads_bytes_(Size) LPBYTE pbSrc, _Inout_updates_bytes_(Size) LPBYTE pbSeedRow, _Out_writes_bytes_(Size) LPBYTE pbDst, LONG Size, LPBYTE pCompressMode ); BOOL OutputRTLScans( PPDEV pPDev, LPBYTE pbPlane1, LPBYTE pbPlane2, LPBYTE pbPlane3, PRTLSCANS pRTLScans ); #endif // _COMPRESS_
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