64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
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/* jpegapi.h -- header file for JPEG image compression interface.
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* Written by Ajai Sehgal
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* (c) Copyright Microsoft Corporation
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*
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* 08-27-1997 (kurtgeis) Removed dependency on Gromit/Fletcher funky data
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* types and includes.
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*/
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#include "jinclude.h"
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#include "jpeglib.h"
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#include "jerror.h" /* get library error codes too */
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#ifndef __JPEGAPI_H__
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#define __JPEGAPI_H__
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// kurtgeis: Moved out of Fletcher code base. Pushed exception handling down
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// into the library, so that the actual calls could return HRESULTs.
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// Class to wrap a thrown HRESULT
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class THROWN
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{
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public:
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// Default constructor
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THROWN()
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{
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m_hr = S_OK;
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}
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// THROWN( HRESULT)
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//
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// Purpose:
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// Construct a throw object for an hresult.
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//
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THROWN( HRESULT hr )
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{
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m_hr = hr;
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}
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HRESULT Hr() { return m_hr; } // The HRESULT thrown
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private:
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HRESULT m_hr; // Associated HResult;
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};
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// Destroy the JPEG handle
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HRESULT DestroyJPEGCompressHeader(HANDLE hJpegC);
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HRESULT DestroyJPEGDecompressHeader(HANDLE hJpegD);
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// Takes the parameters for a tile write and creates a JPEG table for it
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HRESULT JPEGCompressHeader(BYTE *prgbJPEGBuf, UINT tuQuality, ULONG *pcbOut, HANDLE *phJpegC, J_COLOR_SPACE ColorSpace );
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HRESULT JPEGDecompressHeader(BYTE *prgbJPEGBuf, HANDLE *phJpegD, ULONG ulBufferSize );
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// Takes a raw RGBA image buffer and spits back a JPEG data stream.
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HRESULT JPEGFromRGBA(BYTE *prgbImage, BYTE *prgbJPEGBuf,UINT tuQuality, ULONG *pcbOut, HANDLE hJpegC,J_COLOR_SPACE ColorSpace, UINT nWidth, UINT nHeight );
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// Takes a JPEG data stream and spits back a raw RGBA image buffer.
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// iraklis's comment: the second argument is the RGBA buffer to be
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// loaded with the decompressed tile; we are
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// asserting that it is of the right size (i.e. sizeof (TIL))
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HRESULT RGBAFromJPEG(BYTE *prgbJPEG, BYTE *prgbImage, HANDLE hJpegD, ULONG ulBufferSize, BYTE bJPEGConversions, ULONG *pulReturnedNumChannels, UINT nWidth, UINT nHeight );
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#endif // __JPEGAPI_H__
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