119
SDK (Software development Kit)
© 2010 Thorlabs
7.3.2
is_AllocImageMem
USB 2.0
USB 2.0
Syntax
INT is_AllocImageMem (HIDS hCam,
INT width, INT height, INT bitspixel,
char** ppcImgMem, INT* pid)
Description
is_AllocImageMem()
allocates an image memory for an image having its dimensions defined by
width
and
height
and its colour depth defined by
bitspixel
. The memory size is at least:
size = [width * ((bit 1) / 8) + adjust] * height
(for details on
adjust
, see
below)
The line increment is calculated as:
line
= width * [(bit 1) / 8]
lineinc
= line + adjust.
adjust
=
0
, if
line
can be divided by 4 without remainder
adjust
=
4 - rest(line / 4)
, if
line
cannot be divided by 4 without remainder
To read out the line increment, you can use the
function.
The starting address of the memory area is returned in
ppcImgMem
.
pid
returns an ID for the allocated memory. A newly allocated memory is not directly active, i.e.
digitised images will not be stored immediately in this new memory. It must first be made active
using
.
The returned pointer must be write-protected and may not be altered because it will be used for all
further
ImageMem
functions. To release the memory, you can use
.
In the Direct3D modes, image memory allocation is not necessary.
In case the operating system is short of physical memory, today's OS versions swap individual
areas of the RAM that have not been used for some time out to the slower hard disk. This can
slow down image capture if more image memory has been allocated than can be provided by the
RAM at a time.
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Summary of Contents for DCC1 45 Series
Page 5: ...Version Date 3 5 2 22 09 2010 2010 Thorlabs 2010 Thorlabs ...
Page 13: ......
Page 15: ......
Page 16: ...Introduction DCx camera Part I ...
Page 18: ...General Information DCx camera Part II ...
Page 21: ......
Page 22: ...Getting Started DCx camera Part III ...
Page 24: ...Installation DCx camera Part IV ...
Page 30: ...uc480 Camera Manager DCx camera Part V ...
Page 38: ...Camera viewer uc480Viewer DCx camera Part VI ...
Page 45: ...40 DCx camera 2010 Thorlabs Menu Help Figure 15 Info about Camera viewer uc480Viewer ...
Page 87: ......
Page 88: ...SDK Software development Kit DCx camera Part VII ...
Page 109: ...104 DCx camera 2010 Thorlabs Figure 52 Flowchart Handling events messages ...
Page 121: ...116 DCx camera 2010 Thorlabs Flowchart Digital output Figure 57 Flowchart Digital output ...
Page 161: ...156 DCx camera 2010 Thorlabs Related Functions is_GetCameraType is_CameraStatus 159 121 ...
Page 175: ...170 DCx camera 2010 Thorlabs is_GetExposureTime 167 ...
Page 238: ...233 SDK Software development Kit 2010 Thorlabs is_SetImagePos is_SetPixelClock 271 277 ...
Page 261: ...256 DCx camera 2010 Thorlabs is_SetTriggerDelay 289 ...
Page 271: ...266 DCx camera 2010 Thorlabs is_SetGainBoost is_SetAutoParameter 261 221 ...
Page 283: ...278 DCx camera 2010 Thorlabs is_SetSubSampling is_SetAOI 284 219 ...
Page 291: ...286 DCx camera 2010 Thorlabs is_SetAOI is_SetImagePos is_SetPixelClock 219 271 277 ...
Page 361: ......
Page 362: ...Maintenance and Service DCx camera Part VIII ...
Page 370: ...365 Maintenance and Service 2010 Thorlabs ...
Page 371: ......
Page 372: ...Camera Basics DCx camera Part IX ...
Page 389: ......
Page 390: ...Appendices DCx camera Part X ...
Page 397: ...392 DCx camera 2010 Thorlabs Figure 90 Securing the adjusting ring ...
Page 405: ...400 DCx camera 2010 Thorlabs Figure 106 Rev 2 0 Flash Strobe output as Open Emitter OE ...
Page 420: ......