LQR_CARVER_SCAN_RESET(3) LqR library API reference LQR_CARVER_SCAN_RESET(3)NAME
lqr_carver_scan_reset - reset the readout cursor of a multi-size image
SYNOPSIS
#include <lqr.h>
void lqr_carver_scan_reset(LqrCarver* carver);
DESCRIPTION
The function lqr_carver_scan_reset resets the readout pointer associated with the LqrCarver object pointed to by carver to the start of the
image. (Normally, calling this function isn't needed, as the pointer is reset automatically whenever an operation is performed or once a
readout has completed.)
SEE ALSO lqr_carver_scan(3), lqr_carver_scan_by_row(3), lqr_carver_scan_line(3)COPYRIGHT
Copyright (C) 2007-2009 Carlo Baldassi
LqR library 0.4.1 API (3:1:3) 10 Maj 2009 LQR_CARVER_SCAN_RESET(3)
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LQR_CARVER_SCAN_LINE(3) LqR library API reference LQR_CARVER_SCAN_LINE(3)NAME
lqr_carver_scan_line, lqr_carver_scan_line_ext - read out a multi-size image one line at a time
SYNOPSIS
#include <lqr.h>
gboolean lqr_carver_scan_line(LqrCarver* carver, gint* n, guchar** rgb);
gboolean lqr_carver_scan_line_ext(LqrCarver* carver, gint* n, void** rgb);
DESCRIPTION
The functions lqr_carver_scan_line and lqr_carver_scan_line_ext are used to read out the multi-size image contained in the LqrCarver object
pointed to by carver one line at a time. They store the line number (row or column) in the variable pointed to by n and the colour values
in the array pointed to by rgb; then they move the readout pointer to the next line, or they reset it if the end of the image is reached.
The first one must only be used on the LqrCarver objects created with lqr_carver_new, i.e. with 8-bit images, while the second one is
general, but the rgb pointer must be cast to the appropriate type to be used (i.e pass the address of a pointer to void to the function
lqr_carver_scan_line_ext, then cast it to a pointer of the appropriate type and use this last one for reading the output).
Use the function lqr_carver_scan_by_row(3) before calling these to know whether your image will be scanned by row or by column.
RETURN VALUE
These functions return TRUE in case the readout is successful and the end of the image was not reached, FALSE otherwise. If
lqr_carver_scan_line is called over a non-8-bit LqrCarver object, it will return FALSE.
SEE ALSO LqrColDepth(3), lqr_carver_scan_reset(3), lqr_carver_scan(3), lqr_carver_scan_by_row(3)COPYRIGHT
Copyright (C) 2007-2009 Carlo Baldassi
LqR library 0.4.1 API (3:1:3) 10 Maj 2009 LQR_CARVER_SCAN_LINE(3)
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