FileAcq Class Reference

A class for acquiring from a file with the data in RGB format. More...

#include <FileAcq.h>

Inheritance diagram for FileAcq:

Public Member Functions
	FileAcq (void)
	~FileAcq (void)
bool	CaptureFrame ()
	image is already in m_frame, so there's nothing to do More...
bool	Close ()
void	Init (const char *filepathname)
	Copies *filepathname to m_filename. More...
bool	Open ()
	Loads a file first into the CImage object m_image, and then into m_buf inherited from class ImageAcquisition if allocation is successful. More...
	FileAcq (void)
	~FileAcq (void)
bool	CaptureFrame ()
	image is already in m_frame, so there's nothing to do More...
bool	Close ()
void	Init (const char *filepathname)
bool	Open ()
Public Member Functions inherited from ImageAcquisition
	ImageAcquisition (void)
virtual	~ImageAcquisition (void)
void	GetFrame (void *buf)
virtual bool	Init (int width, int height, int bytesPerPixel=4)
	may be overridden, but be sure to call parent function also More...
unsigned int	BytesPerFrame ()
unsigned int	PixelsPerFrame ()
int	GetHeight ()
CString &	GetInfo ()
int	GetWidth ()
void	SetHeight (int height)
void	SetWidth (int width)
	ImageAcquisition (void)
virtual	~ImageAcquisition (void)
void	GetFrame (void *buf)
virtual bool	Init (int width, int height, int bytesPerPixel=4)
	may be overridden, but be sure to call parent function also More...
unsigned int	BytesPerFrame ()
unsigned int	PixelsPerFrame ()
int	GetHeight ()
CString &	GetInfo ()
int	GetWidth ()
void	SetHeight (int height)
void	SetWidth (int width)

Protected Attributes
CImage	m_image
CString	m_filename
	fully-qualified image file name More...
Protected Attributes inherited from ImageAcquisition
CriticalBuf	m_frame
	shared memory to hold copy of current frame More...
int	m_width
	width of image in pixels More...
int	m_height
	height of image in pixels More...
unsigned int	m_numBytes
	number of bytes in a frame More...
unsigned int	m_numPixels
	number of pixels in a frame More...
CString	m_logMsg
	error or information message More...
void *	m_buf
	buffer to capture into More...

Additional Inherited Members
Static Public Member Functions inherited from ImageAcquisition
static UINT __cdecl	ThreadProc (LPVOID param)
static UINT __cdecl	ThreadProc (LPVOID param)
Public Attributes inherited from ImageAcquisition
int	m_source_ID
	The source ID for acquire_image() that indicates what type of device is in use. More...
int	m_device_ID
	[Used Epiphan only]: indicates from which of the two sources to capture More...
std::string	m_ini_file
	The fully-qualified name (including full path) of an Imatest INI file. More...

Detailed Description

A class for acquiring from a file with the data in RGB format.

Constructor & Destructor Documentation

FileAcq::FileAcq

(

void

)

{
}

FileAcq::~FileAcq

(

void

)

{
}

FileAcq::FileAcq

(

void

)

FileAcq::~FileAcq

(

void

)

Member Function Documentation

bool FileAcq::CaptureFrame ( )

inlinevirtual

image is already in m_frame, so there's nothing to do

Implements ImageAcquisition.

bool FileAcq::CaptureFrame ( )

inlinevirtual

image is already in m_frame, so there's nothing to do

Implements ImageAcquisition.

bool FileAcq::Close ( )

inlinevirtual

Implements ImageAcquisition.

{return true;}

bool FileAcq::Close ( )

inlinevirtual

Implements ImageAcquisition.

{return true;}

void FileAcq::Init

(

const char *

filepathname

)

void FileAcq::Init

(

const char *

filepathname

)

Copies *filepathname to m_filename.

References m_filename.

{
   m_filename = filepathname;
}

bool FileAcq::Open ( )

virtual

Loads a file first into the CImage object m_image, and then into m_buf inherited from class ImageAcquisition if allocation is successful.

Returns

Returns TRUE if m_buf is successfully allocated, FALSE otherwise

Implements ImageAcquisition.

References height, ImageAcquisition::Init(), ImageAcquisition::m_buf, m_filename, ImageAcquisition::m_height, m_image, ImageAcquisition::m_width, and width.

{
   bool  success = false;
   int      width, height, bytesPerPixel;
   HRESULT  result;

   result = m_image.Load(m_filename);

   if (result == S_OK)
   {
      bytesPerPixel = m_image.GetBPP() / 8;
      width         = m_image.GetWidth();
      height        = m_image.GetHeight();
      success       = ImageAcquisition::Init(width, height, bytesPerPixel);

      if (success)
      {
         // copy the pixels into m_buf:
         // create a memory drawing context
         //
         HDC hdc         = m_image.GetDC();
         HBITMAP hbitmap = (HBITMAP)m_image;//GetCurrentObject(hdc, OBJ_BITMAP);
         BITMAPINFO  info;

         memset(&info, 0, sizeof(info));
         info.bmiHeader.biSize          = sizeof(info.bmiHeader);
         info.bmiHeader.biWidth         = m_width;
         info.bmiHeader.biHeight        = -m_height;  // a negative value means top-down instead of bottom-up
         info.bmiHeader.biPlanes        = 1;
         info.bmiHeader.biBitCount      = 32;
         info.bmiHeader.biCompression   = BI_RGB;
         info.bmiHeader.biSizeImage     = 0;
         info.bmiHeader.biXPelsPerMeter = 1;
         info.bmiHeader.biYPelsPerMeter = 1;
         info.bmiHeader.biClrUsed       = 0;
         info.bmiHeader.biClrImportant  = 0;

         GetDIBits(hdc, hbitmap, 0, m_height, m_buf, &info, DIB_RGB_COLORS);
         m_image.ReleaseDC();
      }
   }
   
   return success;
}

Here is the call graph for this function:

bool FileAcq::Open ( )

virtual

Implements ImageAcquisition.

Member Data Documentation

CString FileAcq::m_filename

protected

fully-qualified image file name

Referenced by Init(), and Open().

CImage FileAcq::m_image

protected

Referenced by Open().

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The documentation for this class was generated from the following files:

• Documentation/Operator-Console/FileAcq.h
• Documentation/Operator-Console/FileAcq.cpp