Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sys/arch/amiga/dev/ite_cc.c

961 lines
24 KiB
C
Raw Blame History

/*
* $Id: ite_cc.c,v 1.12 1994/03/30 17:24:34 chopps Exp $
*/
#include "ite.h"
#if ! defined (NITE)
#define NITE 1
#endif
#if NITE > 0
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/systm.h>
#include <sys/queue.h>
#include <dev/cons.h>
#include "ite.h"
#include <amiga/dev/itevar.h>
#include <amiga/dev/iteioctl.h>
#include <machine/cpu.h>
#include <amiga/amiga/cc.h>
#include <amiga/dev/grfabs_reg.h>
#include <amiga/dev/viewioctl.h>
#include <amiga/dev/viewvar.h>
#include <sys/termios.h>
extern unsigned char kernel_font_width, kernel_font_height, kernel_font_baseline;
extern short kernel_font_boldsmear;
extern unsigned char kernel_font_lo, kernel_font_hi;
extern unsigned char kernel_font[], kernel_cursor[];
/*
* This is what ip->priv points to;
* it contains local variables for custom-chip ites.
*/
typedef struct ite_priv {
view_t *view; /* the view for this ite. */
u_char **row_ptr; /* array of pointers into the bitmap */
u_long row_bytes;
u_long cursor_opt;
/* these are precalc'ed for the putc routine so it can be faster. */
u_int *column_offset; /* array of offsets for columns */
u_int row_offset; /* the row offset */
u_short width; /* the bitmap width */
u_short underline; /* where the underline goes */
u_short ft_x; /* the font width */
u_short ft_y; /* the font height */
u_char *font_cell[256]; /* the font pointer */
} ipriv_t;
extern struct itesw itesw[];
/* (M<=8)-by-N routines */
static void view_le32n_cursor(struct ite_softc *ip, int flag);
static void view_le8n_putc(struct ite_softc *ip, int c, int dy, int dx, int mode);
static void view_le8n_clear(struct ite_softc *ip, int sy, int sx, int h, int w);
static void view_le8n_scroll(struct ite_softc *ip, int sy, int sx, int count, int dir);
void scroll_bitmap (bmap_t *bm, u_short x, u_short y, u_short width, u_short height, short dx, short dy, u_char mask);
/* globals */
int ite_default_x;
int ite_default_y;
int ite_default_width = 640;
#if defined (GRF_NTSC)
int ite_default_height = 400;
int ite_default_depth = 2;
#elif defined (GRF_PAL)
int ite_default_height = 512;
int ite_default_depth = 2;
#else
int ite_default_height = 400;
int ite_default_depth = 2;
#endif
/* audio bell stuff */
static char *bell_data;
static struct ite_bell_values bell_vals = { 10, 200, 10 };
cc_unblank ()
{
}
init_bell ()
{
short i;
static char sample[20] = {
0,39,75,103,121,127,121,103,75,39,0,
-39,-75,-103,-121,-127,-121,-103,-75,-39 };
if (!bell_data) {
bell_data = alloc_chipmem(20);
if (!bell_data)
return (-1);
for (i=0; i<20; i++)
bell_data[i] = sample[i];
}
return (0);
}
cc_bell ()
{
if (bell_data) {
play_sample (10, PREP_DMA_MEM(bell_data),
bell_vals.period, bell_vals.volume, 0x3, bell_vals.time);
}
}
extern struct ite_softc ite_softc[];
#define IPUNIT(ip) (((u_long)ip-(u_long)ite_softc)/sizeof(struct ite_softc))
int
ite_new_size (struct ite_softc *ip, struct ite_window_size *vs)
{
extern struct view_softc views[];
ipriv_t *cci = ip->priv;
u_long fbp, i;
int error;
error = viewioctl (IPUNIT (ip), VIEW_SETSIZE, (struct view_size *)vs, 0, -1);
cci->view = views[IPUNIT(ip)].view;
ip->rows = (cci->view->display.height) / ip->ftheight;
ip->cols = (cci->view->display.width-1) / ip->ftwidth; /* -1 for bold. */
/* save new values so that future opens use them */
/* this may not be correct when we implement Virtual Consoles */
ite_default_height = cci->view->display.height;
ite_default_width = cci->view->display.width;
ite_default_x = cci->view->display.x;
ite_default_y = cci->view->display.y;
ite_default_depth = cci->view->bitmap->depth;
if (cci->row_ptr)
free_chipmem (cci->row_ptr);
if (cci->column_offset)
free_chipmem (cci->column_offset);
cci->row_ptr = alloc_chipmem (sizeof (u_char *)*ip->rows);
cci->column_offset = alloc_chipmem (sizeof (u_int)*ip->cols);
if (!cci->row_ptr || !cci->column_offset) {
panic ("no memory for console device.");
}
cci->width = cci->view->bitmap->bytes_per_row << 3;
cci->underline = ip->ftbaseline + 1;
cci->row_offset = (cci->view->bitmap->bytes_per_row + cci->view->bitmap->row_mod);
cci->ft_x = ip->ftwidth;
cci->ft_y = ip->ftheight;
cci->row_bytes = cci->row_offset * ip->ftheight;
/* initialize the row pointers */
cci->row_ptr[0] = VDISPLAY_LINE (cci->view, 0, 0);
for (i = 1; i < ip->rows; i++)
cci->row_ptr[i] = cci->row_ptr[i-1] + cci->row_bytes;
/* initialize the column offsets */
cci->column_offset[0] = 0;
for (i = 1; i < ip->cols; i++)
cci->column_offset[i] = cci->column_offset[i-1] + cci->ft_x;
/* initialize the font cell pointers */
cci->font_cell[ip->font_lo] = ip->font;
for (i=ip->font_lo+1; i<=ip->font_hi; i++)
cci->font_cell[i] = cci->font_cell[i-1] + ip->ftheight;
return (error);
}
/*
* view_cnprobe is called when the console is being initialized
* i.e. very early. grfconfig() has been called, so this implies
* that grfcc_probe() was called as well as view_config() (in view.c)
* if we are functioning view_inited will be true.
*/
int
view_cnprobe(min)
int min;
{
extern int view_inited; /* in view.c */
return (view_inited ? CN_INTERNAL : CN_DEAD);
}
void
view_init(ip)
register struct ite_softc *ip;
{
struct itesw *sp = itesw;
ipriv_t *cci = ip->priv;
struct ite_window_size vs;
init_bell ();
if (!cci) {
ip->font = kernel_font;
ip->font_lo = kernel_font_lo;
ip->font_hi = kernel_font_hi;
ip->ftwidth = kernel_font_width;
ip->ftheight = kernel_font_height;
ip->ftbaseline = kernel_font_baseline;
ip->ftboldsmear = kernel_font_boldsmear;
/* Find the correct set of rendering routines for this font. */
if (ip->ftwidth <= 8) {
sp->ite_cursor = (void*)view_le32n_cursor;
sp->ite_putc = (void*)view_le8n_putc;
sp->ite_clear = (void*)view_le8n_clear;
sp->ite_scroll = (void*)view_le8n_scroll;
} else {
panic("kernel font size not supported");
}
cci = alloc_chipmem (sizeof (*cci));
if (!cci) {
panic ("no memory for console device.");
}
ip->priv = cci;
cci->cursor_opt = 0;
cci->view = NULL;
cci->row_ptr = NULL;
cci->column_offset = NULL;
#if 0
/* currently the view is permanently open due to grf driver */
if (viewopen (IPUNIT(ip), 0)) {
panic ("cannot get ahold of our view");
}
#endif
vs.x = ite_default_x;
vs.y = ite_default_y;
vs.width = ite_default_width;
vs.height = ite_default_height;
vs.depth = ite_default_depth;
ite_new_size (ip, &vs);
XXX_grf_cc_on (IPUNIT (ip));
/* viewioctl (IPUNIT(ip), VIEW_DISPLAY, NULL, 0, -1); */
}
}
int
ite_grf_ioctl (ip, cmd, addr, flag, p)
struct ite_softc *ip;
caddr_t addr;
struct proc *p;
{
int error = 0;
struct ite_window_size *is;
struct ite_bell_values *ib;
ipriv_t *cci = ip->priv;
switch (cmd) {
case ITE_GET_WINDOW_SIZE:
is = (struct ite_window_size *)addr;
is->x = cci->view->display.x;
is->y = cci->view->display.y;
is->width = cci->view->display.width;
is->height = cci->view->display.height;
is->depth = cci->view->bitmap->depth;
break;
case ITE_SET_WINDOW_SIZE:
is = (struct ite_window_size *)addr;
if (ite_new_size (ip, is)) {
error = ENOMEM;
} else {
struct winsize ws;
ws.ws_row = ip->rows;
ws.ws_col = ip->cols;
ws.ws_xpixel = cci->view->display.width;
ws.ws_ypixel = cci->view->display.height;
ite_reset (ip);
/* XXX tell tty about the change *and* the process group should */
/* XXX be signalled---this is messy, but works nice :^) */
iteioctl (0, TIOCSWINSZ, (caddr_t)&ws, 0, p);
}
break;
case ITE_DISPLAY_WINDOW:
XXX_grf_cc_on (IPUNIT (ip));
/* viewioctl (IPUNIT(ip), VIEW_DISPLAY, NULL, 0, -1); */
break;
case ITE_REMOVE_WINDOW:
XXX_grf_cc_off (IPUNIT (ip));
/* viewioctl (IPUNIT(ip), VIEW_REMOVE, NULL, 0, -1); */
break;
case ITE_GET_BELL_VALUES:
ib = (struct ite_bell_values *)addr;
bcopy (&bell_vals, ib, sizeof (struct ite_bell_values));
break;
case ITE_SET_BELL_VALUES:
ib = (struct ite_bell_values *)addr;
bcopy (ib, &bell_vals, sizeof (struct ite_bell_values));
break;
case VIEW_USECOLORMAP:
case VIEW_GETCOLORMAP:
/* XXX needs to be fixed when multiple console implemented. */
/* XXX watchout for that -1 its not really the kernel talking. */
/* XXX these two commands don't use the proc pointer though. */
error = viewioctl (0, cmd, addr, flag, -1);
break;
default:
error = -1;
break;
}
return (error);
}
void
view_deinit(ip)
struct ite_softc *ip;
{
ip->flags &= ~ITE_INITED;
/* FIX: free our stuff. */
if (ip->priv) {
ipriv_t *cci = ip->priv;
#if 0
/* view stays open permanently */
if (cci->view) {
viewclose (IPUNIT(ip));
}
#endif
/* well at least turn it off. */
XXX_grf_cc_off (IPUNIT (ip));
/* viewioctl (IPUNIT(ip), VIEW_REMOVE, NULL, 0, -1); */
if (cci->row_ptr)
free_chipmem (cci->row_ptr);
if (cci->column_offset)
free_chipmem (cci->column_offset);
free_chipmem (cci);
ip->priv = NULL;
}
}
/*** (M<8)-by-N routines ***/
static void
view_le32n_cursor(struct ite_softc *ip, int flag)
{
ipriv_t *cci = (ipriv_t *) ip->priv;
view_t *v = cci->view;
bmap_t *bm = v->bitmap;
int dr_plane = (bm->depth > 1 ? bm->depth-1 : 0);
int cend, ofs, h, cstart;
unsigned char opclr, opset;
u_char *pl;
if (flag == START_CURSOROPT) {
if (!cci->cursor_opt) {
view_le32n_cursor (ip, ERASE_CURSOR);
}
cci->cursor_opt++;
return; /* if we are already opted. */
} else if (flag == END_CURSOROPT) {
cci->cursor_opt--;
}
if (cci->cursor_opt)
return; /* if we are still nested. */
/* else we draw the cursor. */
cstart = 0;
cend = ip->ftheight-1;
pl = VDISPLAY_LINE (v, dr_plane, (ip->cursory*ip->ftheight+cstart));
ofs = (ip->cursorx * ip->ftwidth);
/* erase cursor */
if (flag != DRAW_CURSOR && flag != END_CURSOROPT) {
/* erase the cursor */
int h;
if (dr_plane) {
for (h = cend; h >= 0; h--) {
asm("bfclr %0@{%1:%2}"
: : "a" (pl), "d" (ofs), "d" (ip->ftwidth));
pl += cci->row_offset;
}
} else {
for (h = cend; h >= 0; h--) {
asm("bfchg %0@{%1:%2}"
: : "a" (pl), "d" (ofs), "d" (ip->ftwidth));
pl += cci->row_offset;
}
}
}
if ((flag == DRAW_CURSOR || flag == MOVE_CURSOR || flag == END_CURSOROPT)) {
ip->cursorx = MIN(ip->curx, ip->cols-1);
ip->cursory = ip->cury;
cstart = 0;
cend = ip->ftheight-1;
pl = VDISPLAY_LINE (v, dr_plane, (ip->cursory*ip->ftheight+cstart));
ofs = (ip->cursorx * ip->ftwidth);
/* draw the cursor */
if (dr_plane) {
for (h = cend; h >= 0; h--) {
asm("bfset %0@{%1:%2}"
: : "a" (pl), "d" (ofs), "d" (ip->ftwidth));
pl += cci->row_offset;
}
} else {
for (h = cend; h >= 0; h--) {
asm("bfchg %0@{%1:%2}"
: : "a" (pl), "d" (ofs), "d" (ip->ftwidth));
pl += cci->row_offset;
}
}
}
}
static inline
int expbits (int data)
{
int i, nd = 0;
if (data & 1) {
nd |= 0x02;
}
for (i=1; i < 32; i++) {
if (data & (1 << i)) {
nd |= 0x5 << (i-1);
}
}
nd &= ~data;
return (~nd);
}
/* Notes: optimizations given the kernel_font_(width|height) #define'd.
* the dbra loops could be elminated and unrolled using height,
* the :width in the bfxxx instruction could be made immediate instead
* of a data register as it now is.
* the underline could be added when the loop is unrolled
*
* It would look like hell but be very fast.*/
static void
putc_nm (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
while (fh--) {
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (*f++), "a" (p), "d" (co), "d" (fw));
p += ro;
}
}
static void
putc_in (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
while (fh--) {
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~(*f++)), "a" (p), "d" (co), "d" (fw));
p += ro;
}
}
static void
putc_ul (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
int underline = cci->underline;
while (underline--) {
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (*f++), "a" (p), "d" (co), "d" (fw));
p += ro;
}
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (expbits(*f++)), "a" (p), "d" (co), "d" (fw));
p += ro;
underline = fh - cci->underline - 1;
while (underline--) {
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (*f++), "a" (p), "d" (co), "d" (fw));
p += ro;
}
}
static void
putc_ul_in (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
int underline = cci->underline;
while (underline--) {
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~(*f++)), "a" (p), "d" (co), "d" (fw));
p += ro;
}
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~expbits(*f++)), "a" (p), "d" (co), "d" (fw));
p += ro;
underline = fh - cci->underline - 1;
while (underline--) {
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~(*f++)), "a" (p), "d" (co), "d" (fw));
p += ro;
}
}
/* bold */
static void
putc_bd (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
u_short ch;
while (fh--) {
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (ch), "a" (p), "d" (co), "d" (fw+1));
p += ro;
}
}
static void
putc_bd_in (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
u_short ch;
while (fh--) {
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~(ch)), "a" (p), "d" (co), "d" (fw+1));
p += ro;
}
}
static void
putc_bd_ul (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
int underline = cci->underline;
u_short ch;
while (underline--) {
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (ch), "a" (p), "d" (co), "d" (fw+1));
p += ro;
}
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (expbits(ch)), "a" (p), "d" (co), "d" (fw+1));
p += ro;
underline = fh - cci->underline - 1;
while (underline--) {
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (ch), "a" (p), "d" (co), "d" (fw+1));
p += ro;
}
}
static void
putc_bd_ul_in (cci,p,f,co,ro,fw,fh)
register ipriv_t *cci;
register u_char *p;
register u_char *f;
register u_int co;
register u_int ro;
register u_int fw;
register u_int fh;
{
int underline = cci->underline;
u_short ch;
while (underline--) {
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~(ch)), "a" (p), "d" (co), "d" (fw+1));
p += ro;
}
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~expbits(ch)), "a" (p), "d" (co), "d" (fw+1));
p += ro;
underline = fh - cci->underline - 1;
while (underline--) {
ch = *f++;
ch |= ch << 1;
asm ("bfins %0,%1@{%2:%3}" : /* no output */ :
"d" (~(ch)), "a" (p), "d" (co), "d" (fw+1));
p += ro;
}
}
typedef void cc_putc_func ();
cc_putc_func *put_func[ATTR_ALL+1] = {
putc_nm,
putc_in,
putc_ul,
putc_ul_in,
putc_bd,
putc_bd_in,
putc_bd_ul,
putc_bd_ul_in,
/* no support for blink */
putc_nm,
putc_in,
putc_ul,
putc_ul_in,
putc_bd,
putc_bd_in,
putc_bd_ul,
putc_bd_ul_in
};
/* FIX: shouldn't this advance the cursor even if the character to
be output is not available in the font? -ch */
static void
view_le8n_putc(struct ite_softc *ip, int c, int dy, int dx, int mode)
{
register ipriv_t *cci = (ipriv_t *) ip->priv;
if (c < ip->font_lo || c > ip->font_hi)
return;
put_func[mode](cci,
cci->row_ptr[dy],
cci->font_cell[c],
cci->column_offset[dx],
cci->row_offset,
cci->ft_x,
cci->ft_y);
}
static void
view_le8n_clear(struct ite_softc *ip, int sy, int sx, int h, int w)
{
ipriv_t *cci = (ipriv_t *) ip->priv;
view_t *v = cci->view;
bmap_t *bm = cci->view->bitmap;
if ((sx == 0) && (w == ip->cols))
{
/* common case: clearing whole lines */
while (h--)
{
int i;
u_char *ptr = cci->row_ptr[sy];
for (i=0; i < ip->ftheight; i++) {
bzero(ptr, bm->bytes_per_row);
ptr += bm->bytes_per_row + bm->row_mod; /* don't get any smart
ideas, becuase this is for
interleaved bitmaps */
}
sy++;
}
}
else
{
/* clearing only part of a line */
/* XXX could be optimized MUCH better, but is it worth the trouble? */
while (h--)
{
u_char *pl = cci->row_ptr[sy];
int ofs = sx * ip->ftwidth;
int i, j;
for (i = w-1; i >= 0; i--)
{
u_char *ppl = pl;
for (j = ip->ftheight-1; j >= 0; j--)
{
asm("bfclr %0@{%1:%2}"
: : "a" (ppl), "d" (ofs), "d" (ip->ftwidth));
ppl += bm->row_mod + bm->bytes_per_row;
}
ofs += ip->ftwidth;
}
sy++;
}
}
}
/* Note: sx is only relevant for SCROLL_LEFT or SCROLL_RIGHT. */
static void
view_le8n_scroll(ip, sy, sx, count, dir)
register struct ite_softc *ip;
register int sy;
int dir, sx, count;
{
bmap_t *bm = ((ipriv_t *)ip->priv)->view->bitmap;
u_char *pl = ((ipriv_t *)ip->priv)->row_ptr[sy];
if (dir == SCROLL_UP)
{
int dy = sy - count;
int height = ip->bottom_margin - sy + 1;
int i;
/*FIX: add scroll bitmap call */
view_le32n_cursor(ip, ERASE_CURSOR);
scroll_bitmap (bm, 0, dy*ip->ftheight,
bm->bytes_per_row >> 3, (ip->bottom_margin-dy+1)*ip->ftheight,
0, -(count*ip->ftheight), 0x1);
/* if (ip->cursory <= bot || ip->cursory >= dy) {
ip->cursory -= count;
} */
}
else if (dir == SCROLL_DOWN)
{
int dy = sy + count;
int height = ip->bottom_margin - dy + 1;
int i;
/* FIX: add scroll bitmap call */
view_le32n_cursor(ip, ERASE_CURSOR);
scroll_bitmap (bm, 0, sy*ip->ftheight,
bm->bytes_per_row >> 3, (ip->bottom_margin-sy+1)*ip->ftheight,
0, count*ip->ftheight, 0x1);
/* if (ip->cursory <= bot || ip->cursory >= sy) {
ip->cursory += count;
} */
}
else if (dir == SCROLL_RIGHT)
{
int sofs = (ip->cols - count) * ip->ftwidth;
int dofs = (ip->cols) * ip->ftwidth;
int i, j;
view_le32n_cursor(ip, ERASE_CURSOR);
for (j = ip->ftheight-1; j >= 0; j--)
{
int sofs2 = sofs, dofs2 = dofs;
for (i = (ip->cols - (sx + count))-1; i >= 0; i--)
{
int t;
sofs2 -= ip->ftwidth;
dofs2 -= ip->ftwidth;
asm("bfextu %1@{%2:%3},%0"
: "=d" (t)
: "a" (pl), "d" (sofs2), "d" (ip->ftwidth));
asm("bfins %3,%0@{%1:%2}"
: : "a" (pl), "d" (dofs2), "d" (ip->ftwidth), "d" (t));
}
pl += bm->row_mod + bm->bytes_per_row;
}
}
else /* SCROLL_LEFT */
{
int sofs = (sx) * ip->ftwidth;
int dofs = (sx - count) * ip->ftwidth;
int i, j;
view_le32n_cursor(ip, ERASE_CURSOR);
for (j = ip->ftheight-1; j >= 0; j--)
{
int sofs2 = sofs, dofs2 = dofs;
for (i = (ip->cols - sx)-1; i >= 0; i--)
{
int t;
asm("bfextu %1@{%2:%3},%0"
: "=d" (t)
: "a" (pl), "d" (sofs2), "d" (ip->ftwidth));
asm("bfins %3,%0@{%1:%2}"
: : "a" (pl), "d" (dofs2), "d" (ip->ftwidth), "d" (t));
sofs2 += ip->ftwidth;
dofs2 += ip->ftwidth;
}
pl += bm->row_mod + bm->bytes_per_row;
}
}
}
void
scroll_bitmap (bmap_t *bm, u_short x, u_short y, u_short width, u_short height, short dx, short dy, u_char mask)
{
u_short depth = bm->depth;
u_short lwpr = bm->bytes_per_row >> 2;
if (dx) {
/* FIX: */ panic ("delta x not supported in scroll bitmap yet.");
}
if (bm->flags & BMF_INTERLEAVED) {
height *= depth;
depth = 1;
}
if (dy == 0) {
return;
}
if (dy > 0) {
int i;
for (i=0; i < depth && mask; i++, mask >>= 1) {
if (0x1 & mask) {
u_long *pl = (u_long *)bm->plane[i];
u_long *src_y = pl + (lwpr*y);
u_long *dest_y = pl + (lwpr*(y+dy));
u_long count = lwpr*(height-dy);
u_long *clr_y = src_y;
u_long clr_count = dest_y - src_y;
u_long bc, cbc;
src_y += count - 1;
dest_y += count - 1;
bc = count >> 4;
count &= 0xf;
while (bc--) {
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
*dest_y-- = *src_y--; *dest_y-- = *src_y--;
}
while (count--) {
*dest_y-- = *src_y--;
}
cbc = clr_count >> 4;
clr_count &= 0xf;
while (cbc--) {
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
}
while (clr_count--) {
*clr_y++ = 0;
}
}
}
} else if (dy < 0) {
int i;
for (i=0; i < depth && mask; i++, mask >>= 1) {
if (0x1 & mask) {
u_long *pl = (u_long *)bm->plane[i];
u_long *src_y = pl + (lwpr*(y-dy));
u_long *dest_y = pl + (lwpr*y);
long count = lwpr*(height + dy);
u_long *clr_y = dest_y + count;
u_long clr_count = src_y - dest_y;
u_long bc, cbc;
bc = count >> 4;
count &= 0xf;
while (bc--) {
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
*dest_y++ = *src_y++; *dest_y++ = *src_y++;
}
while (count--) {
*dest_y++ = *src_y++;
}
cbc = clr_count >> 4;
clr_count &= 0xf;
while (cbc--) {
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
*clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0;
}
while (clr_count--) {
*clr_y++ = 0;
}
}
}
}
}
#endif
Reference in New Issue View Git Blame Copy Permalink