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106 lines
3.7 KiB
106 lines
3.7 KiB
/////////////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 1997 Active Voice Corporation. All Rights Reserved.
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//
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// Active Agent(r) and Unified Communications(tm) are trademarks of Active Voice Corporation.
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//
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// Other brand and product names used herein are trademarks of their respective owners.
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//
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// The entire program and user interface including the structure, sequence, selection,
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// and arrangement of the dialog, the exclusively "yes" and "no" choices represented
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// by "1" and "2," and each dialog message are protected by copyrights registered in
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// the United States and by international treaties.
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//
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// Protected by one or more of the following United States patents: 5,070,526, 5,488,650,
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// 5,434,906, 5,581,604, 5,533,102, 5,568,540, 5,625,676, 5,651,054.
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//
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// Active Voice Corporation
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// Seattle, Washington
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// USA
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//
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/////////////////////////////////////////////////////////////////////////////////////////
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////
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// jpeg.h - jpeg compression and decompression functions
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////
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#ifndef __JPEG_H__
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#define __JPEG_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "winlocal.h"
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#define JPEG_VERSION 0x00000100
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#define JPEG_COMPRESS 0x00000001
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#define JPEG_DECOMPRESS 0x00000002
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#define JPEG_GREYSCALE 0x00000004
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#define JPEG_FLOAT 0x00000008
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#define JPEG_DEBUG 0x00000010
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#define JPEG_OPTIMIZE 0x00000020
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#define JPEG_PROGRESSIVE 0x00000040
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#define JPEG_DESTGIF 0x00000080
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#define JPEG_DESTBMP 0x00000100
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// handle to jpeg engine
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//
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DECLARE_HANDLE32(HJPEG);
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// JpegInit - initialize jpeg engine
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// <dwVersion> (i) must be JPEG_VERSION
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// <hInst> (i) instance handle of calling module
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// <dwFlags> (i) control flags
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// JPEG_COMPRESS compresssion needed
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// JPEG_DECOMPRESS decompresssion needed
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// return handle (NULL if error)
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//
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HJPEG DLLEXPORT WINAPI JpegInit(DWORD dwVersion, HINSTANCE hInst, DWORD dwFlags);
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// JpegTerm - shut down jpeg engine
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// <hJpeg> (i) handle returned from JpegInit
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// return 0 if success
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//
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int DLLEXPORT WINAPI JpegTerm(HJPEG hJpeg);
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// JpegCompress - compress BMP or GIF input file to JPEG output file
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// <hJpeg> (i) handle returned from JpegInit
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// <lpszSrc> (i) name of input file
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// <lpszDst> (i) name of output file
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// <nQuality> (i) compression quality (0..100; 5-95 is useful range)
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// -1 default quality
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// <lParam> (i) reserved; must be NULL
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// <dwFlags> (i) control flags
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// JPEG_GREYSCALE force monochrome output
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// JPEG_FLOAT use floating point computation
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// JPEG_DEBUG emit verbose debug output
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// JPEG_OPTIMIZE smaller file, slower compression
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// JPEG_PROGRESSIVE create progressive JPEG output
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// return 0 if success
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//
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int DLLEXPORT WINAPI JpegCompress(HJPEG hJpeg, LPCTSTR lpszSrc, LPCTSTR lpszDst, int nQuality, LPCTSTR lParam, DWORD dwFlags);
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// JpegDecompress - decompress JPEG input file to BMP or GIF output file
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// <hJpeg> (i) handle returned from JpegInit
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// <lpszSrc> (i) name of input file
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// <lpszDst> (i) name of output file
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// <nColors> (i) restrict image to no more than <nColor>
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// -1 no restriction
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// <lParam> (i) reserved; must be NULL
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// <dwFlags> (i) control flags
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// JPEG_GREYSCALE force monochrome output
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// JPEG_FLOAT use floating point computation
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// JPEG_DEBUG emit verbose debug output
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// JPEG_DESTBMP destination file is BMP format (default)
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// JPEG_DESTGIF destination file is GIF format
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// return 0 if success
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//
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int DLLEXPORT WINAPI JpegDecompress(HJPEG hJpeg, LPCTSTR lpszSrc, LPCTSTR lpszDst, short nColors, LPCTSTR lParam, DWORD dwFlags);
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#ifdef __cplusplus
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}
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#endif
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#endif // __JPEG_H__
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