Category : OS/2 Files
Archive : EMXTST8F.ZIP
Filename : VIO.C
Output of file : VIO.C contained in archive : EMXTST8F.ZIP
#include
#include
#include
#define INCL_DOSPROCESS
#define INCL_VIO
#define INCL_KBD
#include
/* These variables must not cross a 64KB boundary */
/* Making them auto variables is dangerous */
static VIOMODEINFO vmi;
static VIOPHYSBUF vpb;
static VIOMODEINFO graph_mode;
static VIOCONFIGINFO config;
static VIOMODEINFO org_mode;
static VIOPHYSBUF phys;
static KBDKEYINFO key;
static char msg[] = "Hello world!\r\n";
static void usage (void)
{
puts ("Usage: vio [-gmp]");
exit (1);
}
static void test_physbuf (void)
{
USHORT rc;
unsigned char *p;
int i;
vpb.pBuf = (PBYTE)0xb8000;
vpb.cb = 80*25*2;
rc = VioGetPhysBuf (&vpb, 0);
if (rc == ERROR_VIO_EXTENDED_SG)
{
fputs ("Must run in a full-screen session.\n", stderr);
exit (2);
}
if (rc != 0)
{
fprintf (stderr, "VioGetPhysBuf failed, rc=%u\n", (unsigned)rc);
exit (2);
}
p = MAKEP (vpb.asel[0], 0);
for (i = 0; i < 80*25; ++i)
{
*p ^= 1;
p += 2;
}
}
static void test_hello (void)
{
VioWrtTTY (msg, strlen (msg), 0);
}
static void test_getmode (void)
{
USHORT rc;
vmi.cb = sizeof (vmi);
rc = VioGetMode (&vmi, 0);
if (rc != 0)
{
fprintf (stderr, "VioGetMode failed, rc=%u\n", (unsigned)rc);
exit (2);
}
printf ("Display: %s\n", (vmi.fbType == 0 ? "monochrome" : "color"));
printf ("Colors: %d\n", 1 << vmi.color);
printf ("Columns: %d\n", vmi.col);
printf ("Rows: %d\n", vmi.row);
printf ("Hres: %d\n", vmi.hres);
printf ("Vres: %d\n", vmi.vres);
}
static char *graph_phys;
static char graph_save_buf[0x10000];
static int graph_saved = 0;
static int graph_on = 0;
static void graph_restore (void)
{
if (graph_saved)
{
VioSetMode (&graph_mode, 0);
memcpy (graph_phys, graph_save_buf, 0x10000);
}
}
static void redraw_thread (void *arg)
{
USHORT notify;
for (;;)
{
if (VioSavRedrawWait (VSRWI_SAVEANDREDRAW, ¬ify, 0) != 0)
_endthread ();
DosBeep ((notify == VSRWN_SAVE ? 200 : 400), 200);
if (graph_on)
{
if (notify == VSRWN_SAVE)
{
memcpy (graph_save_buf, graph_phys, 0x10000);
graph_saved = 1;
}
else
graph_restore ();
}
}
}
static void mode_thread (void *arg)
{
USHORT rc, notify;
for (;;)
{
rc = VioModeWait (VMWR_POPUP, ¬ify, 0);
if (rc != 0)
_endthread ();
DosBeep (1000, 200);
if (graph_on)
graph_restore ();
}
}
static void test_graphics (void)
{
USHORT rc;
BYTE not_locked;
BYTE *p;
int i, j;
config.cb = sizeof (config);
rc = VioGetConfig (VIO_CONFIG_CURRENT, &config, 0);
if (rc != 0)
{
fprintf (stderr, "VioGetConfig failed, rc=%d\n", (unsigned)rc);
exit (2);
}
if (config.adapter != DISPLAY_VGA || config.adapter == MONITOR_MONOCHROME)
{
fputs ("Need VGA with color monitor\n", stderr);
exit (2);
}
org_mode.cb = sizeof (org_mode);
VioGetMode (&org_mode, 0);
memset (&graph_mode, 0, sizeof (graph_mode));
graph_mode.cb = sizeof (graph_mode);
graph_mode.fbType = VGMT_OTHER | VGMT_GRAPHICS;
graph_mode.color = 8;
graph_mode.col = 80;
graph_mode.row = 25;
graph_mode.hres = 320;
graph_mode.vres = 200;
rc = VioSetMode (&graph_mode, 0);
if (rc != 0)
{
fprintf (stderr, "VioSetMode failed, rc=%d\n", (unsigned)rc);
exit (2);
}
phys.pBuf = (PBYTE)0xa0000;
phys.cb = 0x10000;
rc = VioGetPhysBuf (&phys, 0);
if (rc != 0)
{
VioSetMode (&org_mode, 0);
fprintf (stderr, "VioGetPhysBuf failed, rc=%d\n", (unsigned)rc);
exit (2);
}
graph_phys = MAKEP (phys.asel[0], 0);
graph_on = 1;
_beginthread (redraw_thread, NULL, 0x4000, NULL);
_beginthread (mode_thread, NULL, 0x4000, NULL);
p = graph_phys;
for (j = 0;; ++j)
{
VioScrLock (LOCKIO_WAIT, ¬_locked, 0);
for (i = 0; i < 320*200; ++i)
p[i] = ((i+j) >> 8) & 0xff;
VioScrUnLock (0);
if (KbdCharIn (&key, IO_NOWAIT, 0) == 0 && key.fbStatus != 0)
break;
}
VioSetMode (&org_mode, 0);
}
int main (int argc, char *argv[])
{
if (argc == 2 && strcmp (argv[1], "-p") == 0)
test_physbuf ();
else if (argc == 2 && strcmp (argv[1], "-g") == 0)
test_graphics ();
else if (argc == 2 && strcmp (argv[1], "-m") == 0)
test_getmode ();
else if (argc == 1)
test_hello ();
else
usage ();
return (0);
}
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