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5X80 Series Software Development Kit (SDK) User’s Guide
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Image Acquisition structure:
typedef struct _tagHHP_IMAGE_ACQUISITION
{
DWORD
dwStructSize;
Size of structure in bytes.
DWORD
dwMask;
Mask of active items.
Config items
DWORD
dwWhiteValue;
Target “white pixel” value.
DWORD
dwWhiteWindow;
Acceptable delta from white value.
DWORD
dwMaxNumExposures;
Max frame capture tries for white value.
HHP_DUTY_CYCLE
illuminatCycle;
Illumination duty cycle (never on, on during imaging).
HHP_DUTY_CYCLE
aimerCycle;
Aimer duty cycle (never on, on during imaging).
HHP_GAIN
fixedGain;
If manual capture mode, gain value for capture.
DWORD
dwFixedExposure;
If manual capture mode, exposure time for capture.
HHP_FRAME_RATE
frameRate;
If manual capture mode, frame rate for capture.
HHP_AUTOEXPOSURE captureMode; Autoexposure
(AGC) Capture mode: barcode, photo or manual.
Capture time only, not real config items:
BOOL
bWaitForTrigger;
Wait for hardware or software trigger before capturing image.
BOOL
bPreviewImage;
Capture a preview image. These are subsample 3, full window,
JPEG transfer images.
} HHP_IMAGE_ACQUISITION, *PHHP_IMAGE_ACQUISITION;
Image Transfer bit masks:
#define BITS_PER_PIXEL_MASK
0x00001
Number of bits per pixel transferred (1 or 8).
#define SUBSAMPLE_VALUE
0x00002
Subsample value (1-10).
#define SUBSAMPLE_VALUE_MASK
0x00002
Subsample value (1-10).
#define BOUNDING_RECTANGLE_MASK
0x00004
Rectangular region within image to send.
#define COMPRESSION_MODE_MASK
0x00008
No Compression, Lossless or Lossy.
#define HISTOGRAM_STRETCH_MASK
0x00010
Range -> 0 - 255.
#define COMPRESSION_FACTOR_MASK
0x00020
If lossy compression, image quality percent.
#define EDGE_ENHANCEMENT_MASK
0x00100
Edge sharpening filter.
#define GAMMA_CORRECTION_MASK
0x00200
Gamma correction.
#define TEXT_ENHANCEMENT_MASK
0x00400
Text sharpening filter.
#define INFINITY_FILTER_MASK
0x00800
Sharpening for image beyond normal focus.
#define FLIP_IMAGE_MASK
0x01000
Rotate the image 180 degrees.
#define NOISE_FILTER_MASK
0x02000
Smoothing (fly spec) filter.
#define TRANSFER_UPDATE_HWND
0x00040
Transfer progress message window.
#define TRANSFER_UPDATE_DWORD
0x00080
Pointer to DWORD for percent of transfer complete.
#define TRANSFER_MASK_ALL
0x03fff
Mask to select all configuration items in structure.
#define TRANSFER_MASK_ALL_NO_NOTIFY 0x03f3f
Mask to select all structure members.
Image Transfer structure:
typedef struct _tagHHP_IMAGE_TRANSFER
{
DWORD
dwStructSize;
Size of structure in bytes.
DWORD
dwMask;
Mask of active items.
Config items:
DWORD
dwBitsPerPixel;
Bits per pixel for transferred image (1 or 8 bits only).
DWORD
dwSubSample;
Subsample value. This means take every dwSubSample pixels
of every dwSubSample row. The default is 1.
RECT
boundingRect;
Rectangle describing a window within the image. All pixels out-
side this rectangle are omitted from the transferred image.
BOOL
bHistogramStretch;
Scaled frequency of total image pixels.
Compression_t
compressionMode;
How image is compressed on transfer. Compression reduces
the amount of data to transfer but can reduce image quality
(Lossy compression) and does take a finite length of time.
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