static void
vbe_104f08(struct bregs *regs)
{
struct vgamode_s *vmode_g = get_current_mode();
if (! vmode_g)
goto fail;
u8 memmodel = GET_GLOBAL(vmode_g->memmodel);
if (memmodel == MM_DIRECT || memmodel == MM_YUV) {
regs->ax = 0x034f;
return;
}
if (regs->bl > 1)
goto fail;
if (regs->bl == 0) {
int ret = vgahw_set_dacformat(vmode_g, regs->bh);
if (ret < 0)
goto fail;
}
int ret = vgahw_get_dacformat(vmode_g);
if (ret < 0)
goto fail;
regs->bh = ret;
regs->ax = 0x004f;
return;
fail:
regs->ax = 0x014f;
}
static void
vbe_104f07(struct bregs *regs)
{
struct vgamode_s *vmode_g = get_current_mode();
if (! vmode_g)
goto fail;
int bpp = vga_bpp(vmode_g);
int linelength = vgahw_get_linelength(vmode_g);
if (linelength < 0)
goto fail;
int ret;
switch (regs->bl) {
case 0x80:
case 0x00:
ret = vgahw_set_displaystart(
vmode_g, DIV_ROUND_UP(regs->cx * bpp, 8) + linelength * regs->dx);
if (ret)
goto fail;
break;
case 0x01:
ret = vgahw_get_displaystart(vmode_g);
if (ret < 0)
goto fail;
regs->dx = ret / linelength;
regs->cx = (ret % linelength) * 8 / bpp;
break;
default:
goto fail;
}
regs->ax = 0x004f;
return;
fail:
regs->ax = 0x014f;
}
void VISIBLE16
vbe_104f05(struct bregs *regs)
{
if (regs->bh > 1 || regs->bl > 1)
goto fail;
if (GET_BDA(vbe_mode) & MF_LINEARFB) {
regs->ah = VBE_RETURN_STATUS_INVALID;
return;
}
struct vgamode_s *vmode_g = get_current_mode();
if (! vmode_g)
goto fail;
if (regs->bh) {
int ret = vgahw_get_window(vmode_g, regs->bl);
if (ret < 0)
goto fail;
regs->dx = ret;
regs->ax = 0x004f;
return;
}
int ret = vgahw_set_window(vmode_g, regs->bl, regs->dx);
if (ret)
goto fail;
regs->ax = 0x004f;
return;
fail:
regs->ax = 0x014f;
}
static void
vbe_104f06(struct bregs *regs)
{
if (regs->bl > 0x02)
goto fail;
struct vgamode_s *vmode_g = get_current_mode();
if (! vmode_g)
goto fail;
int bpp = vga_bpp(vmode_g);
if (regs->bl == 0x00) {
int ret = vgahw_set_linelength(vmode_g, DIV_ROUND_UP(regs->cx * bpp, 8));
if (ret)
goto fail;
} else if (regs->bl == 0x02) {
int ret = vgahw_set_linelength(vmode_g, regs->cx);
if (ret)
goto fail;
}
int linelength = vgahw_get_linelength(vmode_g);
if (linelength < 0)
goto fail;
regs->bx = linelength;
regs->cx = (linelength * 8) / bpp;
regs->dx = GET_GLOBAL(VBE_total_memory) / linelength;
regs->ax = 0x004f;
return;
fail:
regs->ax = 0x014f;
}
bool BeOS_monitor_desc::video_open() {
// Create semaphore
mac_os_lock = create_sem(0, "MacOS Frame Buffer Lock");
const video_mode &mode = get_current_mode();
// Open display
switch (display_type) {
case DISPLAY_WINDOW:
the_window = new MacWindow(BRect(0, 0, mode.x-1, mode.y-1), *this);
break;
case DISPLAY_SCREEN: {
status_t screen_error;
the_screen = new MacScreen(*this, GetString(STR_WINDOW_TITLE), scr_mode_bit & 0x1f, &screen_error);
if (screen_error != B_NO_ERROR) {
the_screen->PostMessage(B_QUIT_REQUESTED);
while (the_screen)
snooze(200000);
ErrorAlert(STR_OPEN_SCREEN_ERR);
return false;
} else {
the_screen->Show();
acquire_sem(mac_os_lock);
}
break;
}
}
return true;
}
