const gx_cm_color_map_procs*
fwd_get_target_cmap_procs(gx_device * dev)
{
const gx_cm_color_map_procs *pprocs;
gx_device_forward * const fdev = (gx_device_forward *)dev;
gx_device * const tdev = fdev->target;
pprocs = dev_proc(tdev, get_color_mapping_procs(tdev));
while (pprocs == &FwdDevice_cm_map_procs) {
pprocs = fwd_get_target_cmap_procs(tdev);
}
return pprocs;
}
/*
* We need to forward the color mapping to the target device.
*/
static void
fwd_map_cmyk_cs(gx_device * dev, frac c, frac m, frac y, frac k, frac out[])
{
gx_device_forward * const fdev = (gx_device_forward *)dev;
gx_device * const tdev = fdev->target;
const gx_cm_color_map_procs * pprocs;
/* Verify that all of the pointers and procs are set */
/* If not then use a default routine. This case should be an error */
if (tdev == 0 || dev_proc(tdev, get_color_mapping_procs) == 0 ||
(pprocs = dev_proc(tdev, get_color_mapping_procs(tdev))) == 0 ||
pprocs->map_cmyk == 0)
cmyk_cs_to_cmyk_cm(tdev, c, m, y, k, out); /* if all else fails */
else
pprocs->map_cmyk(tdev, c, m, y, k, out);
}
/*
* We need to forward the color mapping to the target device.
*/
static void
fwd_map_rgb_cs(gx_device * dev, const gs_imager_state *pis,
frac r, frac g, frac b, frac out[])
{
gx_device_forward * const fdev = (gx_device_forward *)dev;
gx_device * const tdev = fdev->target;
const gx_cm_color_map_procs * pprocs;
/* Verify that all of the pointers and procs are set */
/* If not then use a default routine. This case should be an error */
if (tdev == 0 || dev_proc(tdev, get_color_mapping_procs) == 0 ||
(pprocs = dev_proc(tdev, get_color_mapping_procs(tdev))) == 0 ||
pprocs->map_rgb == 0)
rgb_cs_to_rgb_cm(tdev, pis, r, g, b, out); /* if all else fails */
else
pprocs->map_rgb(tdev, pis, r, g, b, out);
}
