NAME

imgdouble.c - implements double per sample images

SYNOPSIS

i_img *im = i_img_double_new(width, height, channels);
# use like a normal image

DESCRIPTION

Implements double/sample images.

This basic implementation is required so that we have some larger sample image type to work with.

IIM_base_16bit_direct

Base structure used to initialize a 16-bit/sample image.

Internal.

im_img_double_new(ctx, x, y, ch) =category Image creation/destruction =synopsis i_img *img = im_img_double_new(aIMCTX, width, height, channels); =synopsis i_img *img = i_img_double_new(width, height, channels);

Creates a new double per sample image.

Also callable as i_img_double_new(width, height, channels).

i_psamp_ddoub(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y, const i_sample_t *samps, int *chans, int chan_count)

Writes sample values to im for the horizontal line (l, y) to (r-1,y) for the channels specified by chans, an array of int with chan_count elements.

Returns the number of samples written (which should be (r-l) * bits_set(chan_mask)

i_psampf_ddoub(i_img *im, i_img_dim l, i_img_dim r, i_img_dim y, const i_fsample_t *samps, int *chans, int chan_count)

Writes sample values to im for the horizontal line (l, y) to (r-1,y) for the channels specified by chans, an array of int with chan_count elements.

Returns the number of samples written (which should be (r-l) * bits_set(chan_mask)

i_img_to_drgb(im)

Returns a double/sample version of the supplied image.

Returns the image on success, or NULL on failure.

AUTHOR

Tony Cook <tony@develop-help.com>

SEE ALSO

Imager(3)