The following function for reading barcodes from a memory bitmap is available in the bardecode.a library:
int STReadBarCodeFromBitmap(void *hBarcode, BITMAP *pBitmap, float resolution, char ***bc, char ***bc_type, short photometric)
Where:
hBarcode (in) is a handle to an instance of the barcode toolkit.
pBitmap (in) is a pointer to a BITMAP structure (see below)
Resolution (in) is the resolution of the bitmap.
Bc (out) is a pointer that receives a pointer to an array of barcodes found in the image.
Bc_type (out) is a pointer that receives a pointer to an array of barcode types found in the image (one for each barcode).
Photometric (in)specifies the value of a black pixel in a 1-bit image.
Return Value:
Number of barcode found in the image.
BITMAP Structure:
typedef struct tagBITMAP {
int bmType;
int bmWidth;
int bmHeight;
int bmWidthBytes;
BYTE bmPlanes;
BYTE bmBitsPixel;
LPVOID bmBits;
} BITMAP;
Where:
bmType should always be 0
bmWidth is the width of the bitmap in pixels
bmHeight is the height of the bitmap in pixels
bmWidthBytes is the width of a bitmap scan line in bytes (SEE NOTE BELOW).
bmPlanes should always be 1.
bmBitsPixel is the number of bits per pixel for the image and should be either 1, 8 or 24.
Important:
Please note that the end of all scan lines in the image are assumed to end on a 4 byte boundary. i.e. The number of bytes for each scan line of the bitmap should be divisible by 4.
