Retrieve an iterator over the Symbol elements in this collection.

Retrieves the next element in the iteration.

open and probe a video device.

Opens the camera driver and initializes the hardware parameters. @param holder The surface object which the camera will draw preview frame

* Outputs the file title. */

resolve scan direction and convert to ASCII */

copy result to output buffer */

resolve scan direction and convert to ASCII */

The total number of codewords in a QR code.*/

Generate the data mask corresponding to the given mask pattern.*/

Locates a set of putative finder centers in the image. First we search for horizontal and vertical lines that have (dark:light:dark:light:dark) r

Finds horizontal clusters that cross corresponding vertical clusters, presumably corresponding to a finder center. _center: The buffer in whi

Compute the final binarization mask according to Gatos et al.'s method~\cite{GPP06}.*/

Computes sqrt(_x*_x+_y*_y) using CORDIC. This implementation is valid for all 32-bit inputs and returns a result accurate to about 27 bits of pre

Interpolates a background image given the source and a conservative foreground mask. If the current window contains no foreground pixels, the ave

Computes a line passing through the given point using the specified second order statistics. Given a line defined by the equation A*x+B*y+C =

Initializes a client reader handle.*/

Searches for an arrangement of these three finder centers that yields a valid configuration. _c: On input, the three finder centers to consider i

Arranges the sample bits read by qr_sampling_grid_sample() into bytes and groups those bytes into Reed-Solomon blocks. The individual block point

Initialize the sampling grid for each region of the code. _version: The (decoded) version number. _ul_pos: The location of the UL finder patter

Computes a (conservative) foreground mask using the adaptive binarization threshold given in~\cite{SP00}, but knocking the threshold parameter down

* Reads the charset2uni table from standard input. */

Returns the pathname, relocated according to the current installation directory. The returned string is either PATHNAME unmodified or a freshly

Relocate the list of directories that contain the libraries. */

Computes the syndrome of a codeword.*/

Finds all the roots of an error-locator polynomial _lambda by evaluating it at successive values of alpha, and returns the positions of the associa

Initialize lambda to the product of (1-x*alpha**e[i]) for erasure locations e[i]. Note that the user passes in array indices counting from the be

From \cite{CC81}, p. 216. Returns the number of errors detected (degree of _lambda).*/

Divide the polynomial by the free variable, x (shift the coefficients). The number of coefficients, _dp1, must be non-zero.*/

Multiply the polynomial by the free variable, x (shift the coefficients). The number of coefficients, _dp1, must be non-zero.*/

Compute the first (d+1) coefficients of the product of a degree e and a degree f polynomial.*/

Scan for symbols in provided Image. The image format must currently be "Y800" or "GRAY". @returns the number of symbols successfully decoded from the

Specify the crop region of the image.

Specify image sample data.

Set program_name, based on argv[0], and original installation prefix and directory, for relocatability. */

Sets the original and the current installation prefix of the package. Relocation simply replaces a pathname starting with the original prefix by

Sets the original and the current installation prefix of the package. Relocation simply replaces a pathname starting with the original prefix by

Sets the original and the current installation prefix of this module. Relocation simply replaces a pathname starting with the original prefix by

Sets the original and the current installation prefix of this module. Relocation simply replaces a pathname starting with the original prefix by

Sets the original and the current installation prefix of this module. Relocation simply replaces a pathname starting with the original prefix by

If ERRNUM maps to an errno value defined by gnulib, return a string describing the error. Otherwise return NULL. */

Determine number of column positions required for UC. */