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