NetBSD/sys/arch/amiga/dev/grfabs.c

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1994-10-26 05:01:24 +03:00
/* $NetBSD: grfabs.c,v 1.4 1994/10/26 02:03:21 cgd 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.
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*/
/*
* amiga abstract graphics driver.
*/
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#include <sys/param.h>
#include <sys/queue.h>
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#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
};
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struct monitor_list instance_monitors, *monitors;
struct vbl_node grf_vbl_node;
#define ABS(type, val) \
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(type) (((int)(val) < 0) ? -(val) : (val))
void
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grf_vbl_function(data)
void *data;
{
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monitor_t *m;
if (monitors == NULL)
return;
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for (m = monitors->lh_first; m != NULL; m = m->link.le_next) {
if (m->vbl_handler)
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m->vbl_handler(m);
}
}
/*
* XXX: called from ite console init routine.
* Does just what configure will do later but without printing anything.
*/
int
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grfcc_probe()
{
int i = 0;
grf_vbl_node.function = grf_vbl_function;
if (NULL == monitors) {
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LIST_INIT(&instance_monitors);
monitors = &instance_monitors;
while (init_monitor[i]) {
init_monitor[i] ();
i++;
}
if (i) {
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add_vbl_function(&grf_vbl_node, 1, 0);
return(1);
}
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return(0);
}
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return(1);
}
dmode_t *
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get_best_display_mode(width, height, depth)
u_long width, height;
u_char depth;
{
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monitor_t *m;
dmode_t *d, *save;
dimen_t dim;
long dx, dy, ct, dt;
save = NULL;
for (m = monitors->lh_first; m != NULL; m = m->link.le_next) {
dim.width = width;
dim.height = height;
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d = m->get_best_mode(&dim, depth);
if (d) {
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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;
}
}
}
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return(save);
}
/*
* Monitor stuff.
*/
dmode_t *
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grf_get_next_mode(m, d)
monitor_t *m;
dmode_t *d;
{
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return(m->get_next_mode(d));
}
dmode_t *
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grf_get_current_mode(m)
monitor_t *m;
{
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return(m->get_current_mode());
}
dmode_t *
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grf_get_best_mode(m, size, depth)
monitor_t *m;
dimen_t *size;
u_char depth;
{
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return(m->get_best_mode(size, depth));
}
bmap_t *
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grf_alloc_bitmap(m, w, h, d, f)
monitor_t *m;
u_short w, h, d, f;
{
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return(m->alloc_bitmap(w, h, d, f));
}
void
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grf_free_bitmap(m, bm)
monitor_t *m;
bmap_t *bm;
{
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m->free_bitmap(bm);
}
/*
* Mode stuff.
*/
view_t *
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grf_get_current_view(d)
dmode_t *d;
{
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return(d->get_current_view(d));
}
monitor_t *
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grf_get_monitor(d)
dmode_t *d;
{
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return(d->get_monitor(d));
}
/*
* View stuff.
*/
void
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grf_display_view(v)
view_t *v;
{
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v->display_view(v);
}
view_t *
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grf_alloc_view(d, dim, depth)
dmode_t *d;
dimen_t *dim;
u_char depth;
{
if (!d)
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d = get_best_display_mode(dim->width, dim->height, depth);
if (d)
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return(d->alloc_view(d, dim, depth));
return(NULL);
}
void
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grf_remove_view(v)
view_t *v;
{
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v->remove_view(v);
}
void
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grf_free_view(v)
view_t *v;
{
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v->free_view(v);
}
dmode_t *
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grf_get_display_mode(v)
view_t *v;
{
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return(v->get_display_mode(v));
}
int
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grf_get_colormap(v, cm)
view_t *v;
colormap_t *cm;
{
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return(v->get_colormap(v, cm));
}
int
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grf_use_colormap(v, cm)
view_t *v;
colormap_t *cm;
{
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return(v->use_colormap(v, cm));
}