/* $NetBSD: grfabs.c,v 1.7 2002/01/28 09:56:57 aymeric Exp $ */
/*
* Copyright (c) 1994 Christian E. Hopps
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christian E. Hopps.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: grfabs.c,v 1.7 2002/01/28 09:56:57 aymeric Exp $");
/*
* amiga abstract graphics driver.
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <amiga/amiga/color.h>
#include <amiga/amiga/cc.h>
#include <amiga/dev/grfabs_reg.h>
/*
* General and init.
*/
/* add your monitor here. */
monitor_t *cc_init_monitor (void);
/* and here. */
monitor_t *(*init_monitor[])(void) = {
cc_init_monitor,
NULL
};
struct monitor_list instance_monitors, *monitors;
struct vbl_node grf_vbl_node;
#define ABS(type, val) \
(type) (((int)(val) < 0) ? -(val) : (val))
void grf_vbl_function(void *data);
dmode_t *get_best_display_mode(u_long, u_long, u_char);
void
grf_vbl_function(void *data)
{
monitor_t *m;
if (monitors == NULL)
return;
for (m = monitors->lh_first; m != NULL; m = m->link.le_next) {
if (m->vbl_handler)
m->vbl_handler(m);
}
}
/*
* XXX: called from ite console init routine.
* Does just what configure will do later but without printing anything.
*/
int
grfcc_probe(void)
{
int i = 0;
grf_vbl_node.function = grf_vbl_function;
if (NULL == monitors) {
LIST_INIT(&instance_monitors);
monitors = &instance_monitors;
while (init_monitor[i]) {
init_monitor[i] ();
i++;
}
if (i) {
add_vbl_function(&grf_vbl_node, 1, 0);
return(1);
}
return(0);
}
return(1);
}
dmode_t *
get_best_display_mode(u_long width, u_long height, u_char depth)
{
monitor_t *m;
dmode_t *d, *save;
dimen_t dim;
long dx, dy, ct, dt = 0;
save = NULL;
for (m = monitors->lh_first; m != NULL; m = m->link.le_next) {
dim.width = width;
dim.height = height;
d = m->get_best_mode(&dim, depth);
if (d) {
dx = ABS(long, (d->nominal_size.width - width));
dy = ABS(long, (d->nominal_size.height - height));
ct = dx + dy;
if (ct < dt || save == NULL) {
save = d;
dt = ct;
}
}
}
return(save);
}
/*
* Monitor stuff.
*/
dmode_t *
grf_get_next_mode(monitor_t *m, dmode_t *d)
{
return(m->get_next_mode(d));
}
dmode_t *
grf_get_current_mode(monitor_t *m)
{
return(m->get_current_mode());
}
dmode_t *
grf_get_best_mode(monitor_t *m, dimen_t *size, u_char depth)
{
return(m->get_best_mode(size, depth));
}
bmap_t *
grf_alloc_bitmap(monitor_t *m, u_short w, u_short h, u_short d, u_short f)
{
return(m->alloc_bitmap(w, h, d, f));
}
void
grf_free_bitmap(monitor_t *m, bmap_t *bm)
{
m->free_bitmap(bm);
}
/*
* Mode stuff.
*/
view_t *
grf_get_current_view(dmode_t *d)
{
return(d->get_current_view(d));
}
monitor_t *
grf_get_monitor(dmode_t *d)
{
return(d->get_monitor(d));
}
/*
* View stuff.
*/
void
grf_display_view(view_t *v)
{
v->display_view(v);
}
view_t *
grf_alloc_view(dmode_t *d, dimen_t *dim, u_char depth)
{
if (!d)
d = get_best_display_mode(dim->width, dim->height, depth);
if (d)
return(d->alloc_view(d, dim, depth));
return(NULL);
}
void
grf_remove_view(view_t *v)
{
v->remove_view(v);
}
void
grf_free_view(view_t *v)
{
v->free_view(v);
}
dmode_t *
grf_get_display_mode(view_t *v)
{
return(v->get_display_mode(v));
}
int
grf_get_colormap(view_t *v, colormap_t *cm)
{
return(v->get_colormap(v, cm));
}
int
grf_use_colormap(view_t *v, colormap_t *cm)
{
return(v->use_colormap(v, cm));
}
