NAME
lqr_carver_new, lqr_carver_new_ext - the LqrCarver object constructors
SYNOPSIS
#include <lqr.h>
LqrCarver* lqr_carver_new(guchar* buffer, gint width, gint height,
gint channels);
LqrCarver* lqr_carver_new_ext(void* buffer, gint width, gint height,
gint channels, LqrColDepth colour_depth);
DESCRIPTION
The functions lqr_carver_new and lqr_carver_new_ext create a new
LqrCarver object from an image of size width * height with channels
colour channels.
The image must be stored in buffer as a plain array of unsigned chars
(for lqr_carver_new) or the appropriate type cast to void (for
lqr_carver_new_ext), ordered by row, then by column, then by colour
channel.
In the extended constructor lqr_carver_new_ext, the additional
parameter colour_depth is required to specify the colour depth of the
buffer (see LqrColDepth(3) for more information).
After calling the function, the buffer will be owned by the LqrCarver
object and must not be accessed any more, unless you subsequently call
the lqr_carver_set_preserve_input_image(3) function.
The image type is et automatically from the value of channels according
to this table:
Table 3.1. Image types assigned by default
+---------+------------------+
|channels | type |
+---------+------------------+
|1 | LQR_GREY_IMAGE |
+---------+------------------+
|2 | LQR_GREYA_IMAGE |
+---------+------------------+
|3 | LQR_RGB_IMAGE |
+---------+------------------+
|4 | LQR_RGBA_IMAGE |
+---------+------------------+
|5 | LQR_CMYKA_IMAGE |
+---------+------------------+
|>5 | LQR_CUSTOM_IMAGE |
+---------+------------------+
RETURN VALUE
The return value is the address of the newly created LqrCarver object,
or NULL in case of failure (insufficient memory).
SEE ALSO
LqrColDepth(3), LqrImageType(3), lqr_carver_destroy(3),
lqr_carver_init(3), lqr_carver_set_preserve_input_image(3)
COPYRIGHT
Copyright © 2007-2009 Carlo Baldassi