89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
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// Copyright (C) Microsoft Corp. 1994
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/*==============================================================================
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The prototypes in this header file define an API for the Dcx Codec DLL.
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DATE NAME COMMENTS
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13-Jan-94 RajeevD Parallel to faxcodec.h
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==============================================================================*/
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#ifndef _INC_DCXCODEC
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#define _INC_DCXCODEC
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#include <faxcodec.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*==============================================================================
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DcxCodecInit() initializes a context for a conversion. The client may pass a
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NULL context pointer to query for the exact size of the context, allocate the
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context memory, and call a second time to initialize.
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==============================================================================*/
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UINT // returns size of context (0 on failure)
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WINAPI DcxCodecInit
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(
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LPVOID lpContext, // context pointer (or NULL on query)
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LPFC_PARAM lpParam // initialization parameters
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);
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/*==============================================================================
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DcxCodecConvert() executes the conversion specified in DcxCodecInit().
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In the input buffer, lpbBegData is advanced and uLengthData is decremented as
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data is consumed. If the caller wants to retain the input data, both must be
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saved and restored.
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In the output buffer, uLengthData is incremented as data is appended. If the
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output type is HRAW_DATA, an integral number of scan lines are produced.
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To flush any output data at the end of apage, pass a NULL input buffer.
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Returns when the input buffer is empty or the output buffer full.
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==============================================================================*/
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FC_STATUS // returns status
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WINAPI DcxCodecConvert
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(
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LPVOID lpContext, // context pointer
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LPBUFFER lpbufIn, // input buffer (NULL at end of page)
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LPBUFFER lpbufOut // output buffer
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);
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#ifdef __cplusplus
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} // extern "C" {
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#endif
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// DCX file header
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typedef struct
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{
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DWORD dwSignature; // always set to DCX_SIG
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DWORD dwOffset[1024]; // array of page offsets
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}
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DCX_HDR;
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#define DCX_SIG 987654321L
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// PCX file header
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typedef struct
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{
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BYTE bSig; // signature: always 0Ah
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BYTE bVer; // version: at least 2
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BYTE bEnc; // encoding: always 1
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BYTE bBPP; // color depth [bpp]
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short xMin; // x minimum, inclusive
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short yMin; // y minimum, inclusive
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short xMax; // x maximum, inclusive
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short yMax; // y maximum, inclusive
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WORD xRes; // x resolution [dpi]
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WORD yRes; // y resolution [dpi]
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BYTE bPalette[48]; // color palette
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BYTE bReserved;
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BYTE bPlanes; // number of color planes
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WORD wHoriz;
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WORD wPalInfo; // palette info: always 1
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char bFill[58];
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}
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PCX_HDR;
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#endif // _INC_DCXCODEC
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