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USB 2.0 USB 3.0 GigE |
USB 2.0 USB 3.0 GigE |
Syntax
INT is_SetAllocatedImageMem (HIDS hCam, INT width, INT height, INT bitspixel,
char* pcImgMem, int* pid)
Description
Using is_SetAllocatedImageMem(), you can make a memory allocated by a user the active memory for storing digitized images in it. The allocated memory must be large enough and must always be locked globally.
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You can call the is_AddToSequence() function to add a memory which was set using is_SetAllocatedImageMem() to a sequence.
The address of this memory will be passed to the uEye driver. For this, you can use the is_SetAllocatedImageMem() function. In addition, you need to specify the image size, just as you do when calling is_AllocImageMem(). The returned memory ID is required by other functions for memory access.
The memory area must be removed from the driver management again using the is_FreeImageMem() function. Please note that this does not release the memory. You then need to make sure that the memory will be released again.
After is_SetAllocatedImageMem you must call is_SetImageMem or is_AddToSequence in order that the image caption can be carried out in the image memory.
Input parameters
hCam |
Camera handle |
width |
Image width |
height |
Image height |
bitspixel |
Image color depth (bits per pixel) |
pcImgMem |
Pointer to the starting address of the allocated memory |
pid |
Returns the ID of this memory. |
Return values
IS_CANT_ADD_TO_SEQUENCE |
The image memory is already included in the sequence and cannot be added again. |
IS_INVALID_CAMERA_HANDLE |
Invalid camera handle |
IS_INVALID_MEMORY_POINTER |
Invalid pointer or invalid memory ID |
IS_INVALID_PARAMETER |
One of the submitted parameters is outside the valid range or is not supported for this sensor or is not available in this mode. |
IS_NO_SUCCESS |
General error message |
IS_OUT_OF_MEMORY |
No memory could be allocated. |
IS_SEQUENCE_BUF_ALREADY_LOCKED |
The memory could not be locked. The pointer to the buffer is invalid. |
IS_SUCCESS |
Function executed successfully |
Related functions
Example Windows
HANDLE hMem = GlobalAlloc(0, uImageSize);
char* pcMem = (char*)GlobalLock(hMem);
INT nRet = is_SetAllocatedImageMem(hCam, uWidth, uHeight, uBitspixel, pcMem, &iMemID);
[…]
nRet = is_FreeImageMem(hCam, pcMem, iMemID);
GlobalUnlock(hMem);
GlobalFree(hMem);
Example Linux
char* pcMem = (char*)malloc(uImageSize);
int iRet = mlock(pcMem, uImageSize);
INT nRet = is_SetAllocatedImageMem(hCam, uWidth, uHeight, uBitspixel, pcMem, &iMemID);
[…]
nRet = is_FreeImageMem(hCam, pcMem, iMemID);
iRet = munlock(pcMem, uImageSize);
free(pcMem);
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