imjpeg.cpp File Reference

(r1785/r1758)

#include "camtypes.h"
#include "oilbitmap.h"
#include "bmpsrc.h"
#include "imjpeg.h"
#include "jpgsrc.h"
#include "jpgprgrs.h"
#include "jpgermgr.h"

Go to the source code of this file.

Classes
class	JPEGImportOptions
	Import options for the JPEG import filter. Allows a clean method of passing assorted parameters for the JPEG import filter. Specifically, that the calling class should give us a progress bar. Scope: public See Also: BitmapImportOptions. More...
Defines
#define	new   CAM_DEBUG_NEW
Functions
ADDR	FindBytes (ADDR pStart, UINT32 BufferSize, ADDR pBytes, UINT32 BytesSize)
	Finds BytesSize bytes starting at pBytes in pStart, which is BufferSize long Searches for a string of bytes Scope: static Notes: This should be put somewhere useful really. (Templates!!) It could also be more efficient if necessary.

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Define Documentation

#define new   CAM_DEBUG_NEW

Definition at line 158 of file imjpeg.cpp.

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Function Documentation

ADDR FindBytes (  ADDR  pStart, UINT32  BufferSize, ADDR  pBytes, UINT32  BytesSize )

Finds BytesSize bytes starting at pBytes in pStart, which is BufferSize long Searches for a string of bytes Scope: static Notes: This should be put somewhere useful really. (Templates!!) It could also be more efficient if necessary. Author: Colin_Barfoot (Xara Group Ltd) <camelotdev@xara.com> Date: 02/08/96 Parameters: pStart  - The address of the first byte in memory from which to start [INPUTS] BufferSize - The size of the block starting at pStart pBytes : the start address of the block of bytes to search for BytesSize : The number of bytes in the block pointed to by pBytes Returns: The address of the first matching block of memory Definition at line 279 of file imjpeg.cpp. { UINT32 BytesRemaining = BufferSize; ADDR pCurrentStart = pStart; while (BytesRemaining - BytesSize > 0) { ADDR pFirstFound = (ADDR)memchr(pCurrentStart, pBytes[0], BytesRemaining - BytesSize + 1); if (pFirstFound == NULL) { return NULL; } if (memcmp(pFirstFound + 1, pBytes + 1, BytesSize - 1) == 0) { return pFirstFound; } pCurrentStart = pFirstFound + 1; BytesRemaining = BufferSize - (pCurrentStart - pStart); } return NULL; }

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