ref: 75c92428225428c8fde2d015f010e608a0b12f1d
dir: /os/pc/devtv.c/
/*
* Driver for Hauppage TV board
*
* Control commands:
*
* init
* window %d %d %d %d
* colorkey %d %d %d %d %d %d
* capture %d %d %d %d
* capbrightness %d
* capcontrast %d
* capsaturation %d
* caphue %d
* capbw %d
* brightness %d
* contrast %d
* saturation %d
* source %d
* svideo %d
* format %d
* channel %d %d
* signal
* volume %d [ %d ]
* bass %d
* treble %d
* freeze %d
*/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "../port/error.h"
#include "tv.h"
#include <draw.h>
enum {
MemSize= 1,
MemAddr= 0xB8000,
CompressReg= -14,
/* smart lock registers */
SLReg1= -2,
SLReg2= -1,
/* the Bt812 registers */
Bt812Index= -5,
Bt812Data= -6,
Bt2VideoPresent= 0x40,
Bt4ColorBars= 0x40,
Bt5YCFormat= 0x80,
Bt7TriState= 0x0C,
/* VxP 500 registers */
Vxp500Index= 0,
Vxp500Data= 1,
/* video controller registers */
MemoryWindowBaseAddrA= 0x14,
MemoryWindowBaseAddrB= 0x15,
MemoryPageReg= 0x16,
MemoryConfReg= 0x18,
ISAControl= 0x30,
I2CControl= 0x34,
InputVideoConfA= 0x38,
InputVideoConfB= 0x39,
ISASourceWindowWidthA= 0x3A,
ISASourceWindowWidthB= 0x3B,
ISASourceWindowHeightA= 0x3C,
ISASourceWindowHeightB= 0x3D,
InputHorzCropLeftA= 0x40,
InputHorzCropLeftB= 0x41,
InputHorzCropRightA= 0x44,
InputHorzCropRightB= 0x45,
InputHorzCropTopA= 0x48,
InputHorzCropTopB= 0x49,
InputHorzCropBottomA= 0x4C,
InputHorzCropBottomB= 0x4D,
InputHorzFilter= 0x50,
InputHorzScaleControlA= 0x54,
InputHorzScaleControlB= 0x55,
InputVertInterpolControl= 0x58,
InputVertScaleControlA= 0x5C,
InputVertScaleControlB= 0x5D,
InputFieldPixelBufStatus= 0x64,
VideoInputFrameBufDepthA= 0x68,
VideoInputFrameBufDepthB= 0x69,
AcquisitionControl= 0x6C,
AcquisitionAddrA= 0x70,
AcquisitionAddrB= 0x71,
AcquisitionAddrC= 0x72,
VideoBufferLayoutControl= 0x73,
CaptureControl= 0x80,
CaptureViewPortAddrA= 0x81,
CaptureViewPortAddrB= 0x82,
CaptureViewPortAddrC= 0x83,
CaptureViewPortWidthA= 0x84,
CaptureViewPortWidthB= 0x85,
CaptureViewPortHeightA= 0x86,
CaptureViewPortHeightB= 0x87,
CapturePixelBufLow= 0x88,
CapturePixelBufHigh= 0x89,
CaptureMultiBufDepthA= 0x8A,
CaptureMultiBufDepthB= 0x8B,
DisplayControl= 0x92,
VGAControl= 0x94,
OutputProcControlA= 0x96,
OutputProcControlB= 0x97,
DisplayViewPortStartAddrA= 0xA0,
DisplayViewPortStartAddrB= 0xA1,
DisplayViewPortStartAddrC= 0xA2,
DisplayViewPortWidthA= 0xA4,
DisplayViewPortWidthB= 0xA5,
DisplayViewPortHeightA= 0xA6,
DisplayViewPortHeightB= 0xA7,
DisplayViewPortOrigTopA= 0xA8,
DisplayViewPortOrigTopB= 0xA9,
DisplayViewPortOrigLeftA= 0xAA,
DisplayViewPortOrigLeftB= 0xAB,
DisplayWindowLeftA= 0xB0,
DisplayWindowLeftB= 0xB1,
DisplayWindowRightA= 0xB4,
DisplayWindowRightB= 0xB5,
DisplayWindowTopA= 0xB8,
DisplayWindowTopB= 0xB9,
DisplayWindowBottomA= 0xBC,
DisplayWindowBottomB= 0xBD,
OutputVertZoomControlA= 0xC0,
OutputVertZoomControlB= 0xC1,
OutputHorzZoomControlA= 0xC4,
OutputHorzZoomControlB= 0xC5,
BrightnessControl= 0xC8,
ContrastControl= 0xC9,
SaturationControl= 0xCA,
VideoOutIntrStatus= 0xD3,
/* smart lock bits */
PixelClk= 0x03,
SmartLock= 0x00,
FeatureConnector= 0x01,
Divider= 0x02,
Window= 0x08,
KeyWindow= 0x0C,
HSyncLow= 0x20,
VSyncLow= 0x40,
ClkBit= 0x01,
DataBit= 0x02,
HoldBit= 0x04,
SelBit= 0x08,
DivControl= 0x40,
/* i2c bus control bits */
I2C_Clock= 0x02,
I2C_Data= 0x08,
I2C_RdClock= 0x10,
I2C_RdData= 0x20,
I2C_RdData_D= 0x40,
/* I2C bus addresses */
Adr5249= 0x22, /* teletext decoder */
Adr8444= 0x48, /* 6-bit DAC (TDA 8444) */
Adr6300= 0x80, /* sound fader (TEA 6300) */
Adr6320= 0x80, /* sound fader (TEA 6320T) */
AdrTuner= 0xC0,
/* Philips audio chips */
TEA6300= 0,
TEA6320T= 1,
/* input formats */
NTSC_M = 0,
NTSC_443 = 1,
External = 2,
NTSCCropLeft= 36, /* NTSC 3.6 usec */
NTSCCropRight= 558, /* NTSC 55.8 usec */
/* color control indices */
Vxp500Brightness= 1,
Vxp500Contrast= 2,
Vxp500Saturation= 3,
Bt812Brightness= 4,
Bt812Contrast= 5,
Bt812Saturation= 6,
Bt812Hue= 7,
Bt812BW= 8,
/* board revision numbers */
RevisionPP= 0,
RevisionA= 1,
HighQ= 2,
/* VGA controller registers */
VGAMiscOut= 0x3CC,
VGAIndex= 0x3D4,
VGAData= 0x3D5,
VGAHorzTotal= 0x00,
};
enum {
Qdir,
Qdata,
Qctl,
};
static
Dirtab tvtab[]={
".", {Qdir, 0, QTDIR}, 0, 0555,
"tv", {Qdata, 0}, 0, 0666,
"tvctl", {Qctl, 0}, 0, 0666,
};
static
int ports[] = { /* board addresses */
0x51C, 0x53C, 0x55C, 0x57C,
0x59C, 0x5BC, 0x5DC, 0x5FC
};
/*
* Default settings, settings between 0..100
*/
static
int defaults[] = {
Vxp500Brightness, 0,
Vxp500Contrast, 54,
Vxp500Saturation, 54,
Bt812Brightness, 13,
Bt812Contrast, 57,
Bt812Saturation, 51,
Bt812Hue, 0,
Bt812BW, 0,
};
static int port;
static int soundchip;
static int boardrev;
static int left, right;
static int vsync, hsync;
static ulong xtalfreq;
static ushort cropleft, cropright;
static ushort cropbottom, croptop;
static Rectangle window, capwindow;
static void setreg(int, int);
static void setbt812reg(int, int);
static void videoinit(void);
static void createwindow(Rectangle);
static void setcontrols(int, uchar);
static void setcolorkey(int, int, int, int, int, int);
static void soundinit(void);
static void setvolume(int, int);
static void setbass(int);
static void settreble(int);
static void setsoundsource(int);
static void tunerinit(void);
static void settuner(int, int);
static void setvideosource(int);
static int waitvideosignal(void);
static void freeze(int);
static void setsvideo(int);
static void setinputformat(int);
static void enablevideo(void);
static void *saveframe(int *);
static int
min(int a, int b)
{
return a < b ? a : b;
}
static int
max(int a, int b)
{
return a < b ? b : a;
}
static int
present(int port)
{
outb(port+Vxp500Index, 0xAA);
if (inb(port+Vxp500Index) != 0xAA)
return 0;
outb(port+Vxp500Index, 0x55);
outb(port+Vxp500Data, 0xAA);
if (inb(port+Vxp500Index) != 0x55)
return 0;
if (inb(port+Vxp500Data) != 0xAA)
return 0;
outb(port+Vxp500Data, 0x55);
if (inb(port+Vxp500Index) != 0x55)
return 0;
if (inb(port+Vxp500Data) != 0x55)
return 0;
return 1;
}
static int
getvsync(void)
{
int vslow, vshigh, s;
ushort timo;
s = splhi();
outb(port+Vxp500Index, VideoOutIntrStatus);
/* wait for VSync to go high then low */
for (timo = ~0; timo; timo--)
if (inb(port+Vxp500Data) & 2) break;
for (timo = ~0; timo; timo--)
if ((inb(port+Vxp500Data) & 2) == 0) break;
/* count how long it stays low and how long it stays high */
for (vslow = 0, timo = ~0; timo; timo--, vslow++)
if (inb(port+Vxp500Data) & 2) break;
for (vshigh = 0, timo = ~0; timo; timo--, vshigh++)
if ((inb(port+Vxp500Data) & 2) == 0) break;
splx(s);
return vslow < vshigh;
}
static int
gethsync(void)
{
int hslow, hshigh, s;
ushort timo;
s = splhi();
outb(port+Vxp500Index, VideoOutIntrStatus);
/* wait for HSync to go high then low */
for (timo = ~0; timo; timo--)
if (inb(port+Vxp500Data) & 1) break;
for (timo = ~0; timo; timo--)
if ((inb(port+Vxp500Data) & 1) == 0) break;
/* count how long it stays low and how long it stays high */
for (hslow = 0, timo = ~0; timo; timo--, hslow++)
if (inb(port+Vxp500Data) & 1) break;
for (hshigh = 0, timo = ~0; timo; timo--, hshigh++)
if ((inb(port+Vxp500Data) & 1) == 0) break;
splx(s);
return hslow < hshigh;
}
static void
tvinit(void)
{
int i;
for (i = 0, port = 0; i < nelem(ports); i++) {
if (present(ports[i])) {
port = ports[i];
break;
}
}
if (i == nelem(ports))
return;
/*
* the following routines are the prefered way to
* find out the sync polarities. Unfortunately, it
* doesn't always work.
*/
#ifndef VSync
vsync = getvsync();
hsync = gethsync();
#else
vsync = VSync;
hsync = HSync;
#endif
left = right = 80;
soundinit();
tunerinit();
videoinit();
}
static Chan*
tvattach(char *spec)
{
if (port == 0)
error(Enonexist);
return devattach('V', spec);
}
static Walkqid*
tvwalk(Chan *c, Chan *nc, char **name, int nname)
{
return devwalk(c, nc, name, nname, tvtab, nelem(tvtab), devgen);
}
static int
tvstat(Chan *c, uchar *db, int n)
{
return devstat(c, db, n, tvtab, nelem(tvtab), devgen);
}
static Chan*
tvopen(Chan *c, int omode)
{
return devopen(c, omode, tvtab, nelem(tvtab), devgen);
}
static void
tvclose(Chan *)
{
}
static long
tvread(Chan *c, void *a, long n, vlong offset)
{
static void *frame;
static int size;
USED(offset);
switch((ulong)c->qid.path){
case Qdir:
return devdirread(c, a, n, tvtab, nelem(tvtab), devgen);
case Qdata:
if (eqrect(capwindow, Rect(0, 0, 0, 0)))
error(Ebadarg);
if (offset == 0)
frame = saveframe(&size);
if (frame) {
if (n > size - offset)
n = size - offset;
memmove(a, (char *)frame + offset, n);
} else
error(Enovmem);
break;
default:
n=0;
break;
}
return n;
}
static long
tvwrite(Chan *c, void *vp, long n, vlong offset)
{
char buf[128], *field[10], *a;
int i, nf, source;
static Rectangle win;
static int hsize, size = 0;
static void *frame;
USED(offset);
a = vp;
switch((ulong)c->qid.path){
case Qctl:
if (n > sizeof(buf)-1)
n = sizeof(buf)-1;
memmove(buf, a, n);
buf[n] = '\0';
nf = getfields(buf, field, nelem(field), 1, " \t");
if (nf < 1) error(Ebadarg);
if (strcmp(field[0], "init") == 0) {
window = Rect(0, 0, 0, 0);
capwindow = Rect(0, 0, 0, 0);
source = 0; /* video 0 input */
setvideosource(source);
left = right = 80;
setsoundsource(source);
for (i = 0; i < nelem(defaults); i += 2)
setcontrols(defaults[i], defaults[i+1]);
} else if (strcmp(field[0], "colorkey") == 0) {
if (nf < 7) error(Ebadarg);
setcolorkey(strtoul(field[1], 0, 0), strtoul(field[2], 0, 0),
strtoul(field[3], 0, 0), strtoul(field[4], 0, 0),
strtoul(field[5], 0, 0), strtoul(field[6], 0, 0));
} else if (strcmp(field[0], "window") == 0) {
if (nf < 5) error(Ebadarg);
createwindow(Rect(strtoul(field[1], 0, 0), strtoul(field[2], 0, 0),
strtoul(field[3], 0, 0), strtoul(field[4], 0, 0)));
setvolume(left, right);
} else if (strcmp(field[0], "capture") == 0) {
if (nf < 5) error(Ebadarg);
capwindow = Rect(strtoul(field[1], 0, 0), strtoul(field[2], 0, 0),
strtoul(field[3], 0, 0), strtoul(field[4], 0, 0));
} else if (strcmp(field[0], "freeze") == 0) {
if (nf < 2) error(Ebadarg);
freeze(strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "capbrightness") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Bt812Brightness, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "capcontrast") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Bt812Contrast, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "capsaturation") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Bt812Saturation, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "caphue") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Bt812Hue, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "capbw") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Bt812BW, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "brightness") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Vxp500Brightness, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "contrast") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Vxp500Contrast, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "saturation") == 0) {
if (nf < 2) error(Ebadarg);
setcontrols(Vxp500Saturation, strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "source") == 0) {
if (nf < 2) error(Ebadarg);
source = strtoul(field[1], 0, 0);
setvideosource(source);
setsoundsource(source);
} else if (strcmp(field[0], "svideo") == 0) {
if (nf < 2) error(Ebadarg);
setsvideo(strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "format") == 0) {
if (nf < 2) error(Ebadarg);
setinputformat(strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "channel") == 0) {
if (nf < 3) error(Ebadarg);
setvolume(0, 0);
settuner(strtoul(field[1], 0, 0), strtoul(field[2], 0, 0));
tsleep(&up->sleep, return0, 0, 300);
setvolume(left, right);
} else if (strcmp(field[0], "signal") == 0) {
if (!waitvideosignal())
error(Etimedout);
} else if (strcmp(field[0], "volume") == 0) {
if (nf < 2) error(Ebadarg);
left = strtoul(field[1], 0, 0);
if (nf < 3)
right = left;
else
right = strtoul(field[2], 0, 0);
setvolume(left, right);
} else if (strcmp(field[0], "bass") == 0) {
if (nf < 2) error(Ebadarg);
setbass(strtoul(field[1], 0, 0));
} else if (strcmp(field[0], "treble") == 0) {
if (nf < 2) error(Ebadarg);
settreble(strtoul(field[1], 0, 0));
} else
error(Ebadctl);
break;
default:
error(Ebadusefd);
}
return n;
}
Dev tvdevtab = {
'V',
"tv",
devreset,
tvinit,
devshutdown,
tvattach,
tvwalk,
tvstat,
tvopen,
devcreate,
tvclose,
tvread,
devbread,
tvwrite,
devbwrite,
devremove,
devwstat,
};
static void
setreg(int index, int data)
{
outb(port+Vxp500Index, index);
outb(port+Vxp500Data, data);
}
static unsigned int
getreg(int index)
{
outb(port+Vxp500Index, index);
return inb(port+Vxp500Data);
}
/*
* I2C routines
*/
static void
delayi2c(void)
{
int i, val;
/* delay for 4.5 usec to guarantee clock time */
for (i = 0; i < 75; i++) { /* was 50 */
val = inb(port+Vxp500Data);
USED(val);
}
}
static int
waitSDA(void)
{
ushort timo;
/* wait for i2c clock to float high */
for (timo = ~0; timo; timo--)
if (inb(port+Vxp500Data) & I2C_RdData)
break;
if (!timo) print("devtv: waitSDA fell out of loop\n");
return !timo;
}
static int
waitSCL(void)
{
ushort timo;
/* wait for i2c clock to float high */
for (timo = ~0; timo; timo--)
if (inb(port+Vxp500Data) & I2C_RdClock)
break;
delayi2c();
if (!timo) print("devtv: waitSCL fell out of loop\n");
return !timo;
}
static int
seti2cdata(int data)
{
int b, reg, val;
int error;
error = 0;
reg = inb(port+Vxp500Data);
for (b = 0x80; b; b >>= 1) {
if (data & b)
reg |= I2C_Data;
else
reg &= ~I2C_Data;
outb(port+Vxp500Data, reg);
reg |= I2C_Clock;
outb(port+Vxp500Data, reg);
error |= waitSCL();
reg &= ~I2C_Clock;
outb(port+Vxp500Data, reg);
delayi2c();
}
reg |= I2C_Data;
outb(port+Vxp500Data, reg);
reg |= I2C_Clock;
outb(port+Vxp500Data, reg);
error |= waitSCL();
val = inb(port+Vxp500Data);
USED(val);
reg &= ~I2C_Clock;
outb(port+Vxp500Data, reg);
delayi2c();
return error;
}
static int
seti2creg(int id, int index, int data)
{
int reg, error;
error = 0;
/* set i2c control register to enable i2c clock and data lines */
setreg(I2CControl, I2C_Data|I2C_Clock);
error |= waitSDA();
error |= waitSCL();
outb(port+Vxp500Data, I2C_Clock);
delayi2c();
outb(port+Vxp500Data, 0);
delayi2c();
error |= seti2cdata(id);
error |= seti2cdata(index);
error |= seti2cdata(data);
reg = inb(port+Vxp500Data);
reg &= ~I2C_Data;
outb(port+Vxp500Data, reg);
reg |= I2C_Clock;
outb(port+Vxp500Data, reg);
error |= waitSCL();
reg |= I2C_Data;
outb(port+Vxp500Data, reg);
error |= waitSDA();
return error;
}
static int
seti2cregs(int id, int index, int n, uchar *data)
{
int reg, error;
error = 0;
/* set i2c control register to enable i2c clock and data lines */
setreg(I2CControl, I2C_Data|I2C_Clock);
error |= waitSDA();
error |= waitSCL();
outb(port+Vxp500Data, I2C_Clock);
delayi2c();
outb(port+Vxp500Data, 0);
delayi2c();
/* send data */
error |= seti2cdata(id);
error |= seti2cdata(index);
while (n--)
error |= seti2cdata(*data++);
/* send stop */
reg = inb(port+Vxp500Data);
reg &= ~I2C_Data;
outb(port+Vxp500Data, reg);
reg |= I2C_Clock;
outb(port+Vxp500Data, reg);
error |= waitSCL();
reg |= I2C_Data;
outb(port+Vxp500Data, reg);
error |= waitSDA();
return error;
}
/*
* Audio routines
*/
static void
setvolume(int left, int right)
{
int vol, loudness = 0;
if (soundchip == TEA6300) {
seti2creg(Adr6300, 0, (63L * left) / 100);
seti2creg(Adr6300, 1, (63L * right) / 100);
vol = (15L * max(left, right)) / 100;
seti2creg(Adr6300, 4, 0x30 | vol);
} else {
vol = (63L * max(left, right)) / 100;
seti2creg(Adr6320, 0, vol | (loudness << 6));
seti2creg(Adr6320, 1, (63L * right) / 100);
seti2creg(Adr6320, 2, (63L * left) / 100);
}
}
static void
setbass(int bass)
{
if (soundchip == TEA6300)
seti2creg(Adr6300, 2, (15L * bass) / 100);
else
seti2creg(Adr6320, 5, max((31L * bass) / 100, 4));
}
static void
settreble(int treble)
{
if (soundchip == TEA6300)
seti2creg(Adr6300, 3, (15L * treble) / 100);
else
seti2creg(Adr6320, 6, max((31L * treble) / 100, 7));
}
static void
setsoundsource(int source)
{
if (soundchip == TEA6300)
seti2creg(Adr6300, 5, 1 << source);
else
seti2creg(Adr6320, 7, source);
setbass(50);
settreble(50);
setvolume(left, right);
}
static void
soundinit(void)
{
if (seti2creg(Adr6320, 7, 0) && seti2creg(Adr6300, 4, 0))
print("devtv: Audio init failed\n");
soundchip = AudioChip;
setvolume(0, 0);
}
/*
* Tuner routines
*/
static
long hrcfreq[] = { /* HRC CATV frequencies */
0, 7200, 5400, 6000, 6600, 7800, 8400, 17400,
18000, 18600, 19200, 19800, 20400, 21000, 12000, 12600,
13200, 13800, 14400, 15000, 15600, 16200, 16800, 21600,
22200, 22800, 23400, 24000, 24600, 25200, 25800, 26400,
27000, 27600, 28200, 28800, 29400, 30000, 30600, 31200,
31800, 32400, 33000, 33600, 34200, 34800, 35400, 36000,
36600, 37200, 37800, 38400, 39000, 39600, 40200, 40800,
41400, 42000, 42600, 43200, 43800, 44400, 45000, 45600,
46200, 46800, 47400, 48000, 48600, 49200, 49800, 50400,
51000, 51600, 52200, 52800, 53400, 54000, 54600, 55200,
55800, 56400, 57000, 57600, 58200, 58800, 59400, 60000,
60600, 61200, 61800, 62400, 63000, 63600, 64200, 9000,
9600, 10200, 10800, 11400, 64800, 65400, 66000, 66600,
67200, 67800, 68400, 69000, 69600, 70200, 70800, 71400,
72000, 72600, 73200, 73800, 74400, 75000, 75600, 76200,
76800, 77400, 78000, 78600, 79200, 79800,
};
static void
settuner(int channel, int finetune)
{
static long lastfreq;
uchar data[3];
long freq;
int cw2, n, sa;
if (channel < 0 || channel > nelem(hrcfreq))
error(Ebadarg);
freq = hrcfreq[channel];
/* these settings are all for (FS936E) USA Tuners */
if (freq < 16025) /* low band */
cw2 = 0xA4;
else if (freq < 45425) /* mid band */
cw2 = 0x94;
else
cw2 = 0x34;
/*
* Channels are stored are 1/100 MHz resolutions, but
* the tuner wants stuff in MHZ, so divide by 100, we
* then have to shift by 4 to get the prog. div. value
*/
n = ((freq + 4575L) * 16) / 100L + finetune;
if (freq > lastfreq) {
sa = (n >> 8) & 0xFF;
data[0] = n & 0xFF;
data[1] = 0x8E;
data[2] = cw2;
} else {
sa = 0x8E;
data[0] = cw2;
data[1] = (n >> 8) & 0xFF;
data[2] = n & 0xFF;
}
lastfreq = freq;
seti2cregs(AdrTuner, sa, 3, data);
}
static void
tunerinit(void)
{
if (seti2creg(AdrTuner, 0, 0))
print("devtv: Tuner init failed\n");
}
/*
* Video routines
*/
static int slreg1 = 0;
static int slreg2 = 0;
static int vcogain = 0;
static int phdetgain = 2;
static int plln1 = 2;
static int pllp2 = 1;
static void
waitforretrace(void)
{
ushort timo;
for (timo = ~0; (getreg(VideoOutIntrStatus) & 2) == 0 && timo; timo--)
/* wait for VSync inactive */;
for (timo = ~0; (getreg(VideoOutIntrStatus) & 2) && timo; timo--)
/* wait for VSync active */;
}
static void
updateshadowregs(void)
{
int val;
setreg(InputVideoConfA, getreg(InputVideoConfA) | 0x40);
val = getreg(OutputProcControlB);
setreg(OutputProcControlB, val & 0x7F);
setreg(OutputProcControlB, val | 0x80);
}
static void
setvgareg(int data)
{
/* set HSync & VSync first, to make sure VSync works properly */
setreg(VGAControl, (getreg(VGAControl) & ~0x06) | (data & 0x06));
/* wait for VSync and set the whole register */
waitforretrace();
setreg(VGAControl, data);
}
static void
setbt812reg(int index, int data)
{
outb(port+Bt812Index, index);
outb(port+Bt812Data, data);
}
static int
getbt812reg(int index)
{
outb(port+Bt812Index, index);
return inb(port+Bt812Data);
}
static void
setbt812regpair(int index, ushort data)
{
outb(port+Bt812Index, index);
outb(port+Bt812Data, data);
outb(port+Bt812Data, data >> 8);
}
static void
setvideosource(int source)
{
int s;
source &= 7;
s = source & 3;
setbt812reg(0, ((s << 2) | s) << 3);
s = (source & 4) << 4;
setbt812reg(4, (getbt812reg(4) & ~Bt4ColorBars) | s);
}
static void
setsvideo(int enable)
{
if (enable)
setbt812reg(5, getbt812reg(5) | Bt5YCFormat);
else
setbt812reg(5, getbt812reg(5) & ~Bt5YCFormat);
}
static int
waitvideosignal(void)
{
ushort timo;
for (timo = ~0; timo; timo--)
if (getbt812reg(2) & Bt2VideoPresent)
return 1;
return 0;
}
/*
* ICS1572 Programming Configuration
*
* R = 1
* M = x
* A = x
* N1 = 4
* N2 = internal divide ratio
*/
static
uchar ICSbits[7] = {
0x01, /* bits 8 - 1 00000001 */
0x05, /* bits 16 - 9 00000101 */
0xFF, /* bits 24 - 17 11111111 */
0x8C, /* bits 32 - 25 10001100 */
0xBF, /* bits 40 - 33 10111111 */
0x00, /* bits 48 - 41 00000000 */
0x00, /* bits 56 - 49 00000000 */
};
static void
sendbit(int val, int hold)
{
slreg2 &= ~(HoldBit|DataBit|ClkBit);
if (val) slreg2 |= DataBit;
if (hold) slreg2 |= HoldBit;
outb(port+SLReg2, slreg2);
outb(port+SLReg2, slreg2|ClkBit);
outb(port+SLReg2, slreg2);
}
static void
load1572(int select)
{
int reg;
uchar mask;
if (select)
slreg2 |= SelBit;
else
slreg2 &= ~SelBit;
outb(port+SLReg2, slreg2);
for (reg = 0; reg < sizeof(ICSbits); reg++) {
for (mask = 1; mask != 0; mask <<= 1) {
if (reg == sizeof(ICSbits)-1 && mask == 0x80) {
sendbit(ICSbits[reg] & mask, 1);
} else
sendbit(ICSbits[reg] & mask, 0);
}
}
}
static void
smartlockdiv(int count, int vcogain, int phdetgain, int n1, int p2)
{
int extdiv, intdiv;
int nslreg2, external;
nslreg2 = slreg2;
extdiv = ((count - 1) / 512) + 1;
intdiv = (count / extdiv);
nslreg2 &= ~0xC0;
switch (extdiv) {
case 1: external = 0; break;
case 2: external = 1; break;
case 3: external = 1; nslreg2 |= 0x40; break;
case 4: external = 1; nslreg2 |= 0x80; break;
default: return;
}
if ((slreg1 & PixelClk) == 0) {
slreg2 = nslreg2;
outb(port+SLReg2, slreg2);
}
/* set PLL divider */
ICSbits[0] &= ~0x07;
ICSbits[0] |= n1 & 0x07;
ICSbits[3] &= ~0xB7;
ICSbits[3] |= vcogain & 0x07;
ICSbits[3] |= (phdetgain & 0x03) << 4;
ICSbits[3] |= p2 << 7;
if (external)
ICSbits[1] |= 0x04; /* set EXTFBKEN */
else
ICSbits[1] &= ~0x04; /* clear EXTFBKEN */
intdiv--;
ICSbits[2] = intdiv; /* set N2 */
ICSbits[3] &= ~ 0x08;
ICSbits[3] |= (intdiv >> 5) & 0x08;
load1572(1);
}
static void
disablecolorkey(void)
{
setreg(DisplayControl, getreg(DisplayControl) & 0xFE);
updateshadowregs();
}
static
uchar colorkeylimit[6] = {
15, /* upper limit green */
255, /* lower limit green */
63, /* upper limit red */
63, /* upper limit blue */
15, /* lower limit red */
15, /* lower limit blue */
};
static void
enablecolorkey(int enable)
{
int i;
if (enable) {
for (i = 0; i < 6; i++)
seti2creg(Adr8444, 0xF0 | i, colorkeylimit[i]);
slreg1 &= ~0x1C;
if (colorkeylimit[4] == 255)
slreg1 |= 0x04; /* disable red lower limit */
if (colorkeylimit[1] == 255)
slreg1 |= 0x08; /* disable green lower limit */
if (colorkeylimit[5] == 255)
slreg1 |= 0x10; /* disable blue lower limit */
} else {
for (i = 0; i < 6; i++)
seti2creg(Adr8444, 0xF0 | i, 63);
slreg1 |= 0x1C;
}
outb(port+SLReg1, slreg1);
disablecolorkey();
}
static void
setcolorkey(int rl, int rh, int gl, int gh, int bl, int bh)
{
colorkeylimit[0] = gh;
colorkeylimit[1] = gl;
colorkeylimit[2] = rh;
colorkeylimit[3] = bh;
colorkeylimit[4] = rl;
colorkeylimit[5] = bl;
enablecolorkey(1);
}
static void
waitvideoframe(void)
{
ushort timo;
int val;
/* clear status bits and wait for start of an even field */
val = getreg(InputFieldPixelBufStatus);
USED(val);
for (timo = ~0; timo; timo--)
if ((getreg(InputFieldPixelBufStatus) & 2) == 0)
break;
if (!timo) print("devtv: Wait for video frame failed\n");
}
static void
freeze(int enable)
{
ushort timo;
int reg;
if (enable) {
waitvideoframe();
waitvideoframe();
setreg(InputVideoConfB, getreg(InputVideoConfB) | 0x08);
updateshadowregs();
for (timo = ~0; timo; timo--)
if (getreg(InputVideoConfB) & 0x80) break;
waitvideoframe();
reg = getreg(OutputProcControlB);
if ((reg & 0x20) == 0) {
setreg(ISAControl, 0x80);
setreg(OutputProcControlB, getreg(OutputProcControlB) | 0x20);
setreg(ISAControl, 0x42);
reg = getreg(OutputProcControlB);
setreg(OutputProcControlB, reg & 0x7F);
setreg(OutputProcControlB, reg | 0x80);
}
} else {
setreg(InputVideoConfB, getreg(InputVideoConfB) & ~0x08);
updateshadowregs();
for (timo = ~0; timo; timo--)
if (getreg(InputVideoConfB) & 0x40) break;
waitvideoframe();
reg = getreg(InputFieldPixelBufStatus);
USED(reg);
}
}
static void
enablevideo(void)
{
setreg(DisplayControl, 0x04);
updateshadowregs();
}
static void
disablevideo(void)
{
setreg(DisplayControl, 0x18);
updateshadowregs();
}
static
uchar vxp500init[] = { /* video register initialization in (index,data) hex pairs */
0x30, 0x82, 0x39, 0x40, 0x58, 0x0C, 0x73, 0x02, 0x80, 0x00, 0x25, 0x0F,
0x26, 0x0F, 0x38, 0x46, 0x30, 0x03, 0x12, 0x3B, 0x97, 0x20, 0x13, 0x00,
0x14, 0x34, 0x15, 0x04, 0x16, 0x00, 0x17, 0x53, 0x18, 0x04, 0x19, 0x62,
0x1C, 0x00, 0x1D, 0x00, 0x34, 0x3A, 0x38, 0x06, 0x3A, 0x00, 0x3B, 0x00,
0x3C, 0x00, 0x3D, 0x00, 0x40, 0x40, 0x41, 0x40, 0x44, 0xFF, 0x45, 0xFF,
0x48, 0x40, 0x49, 0x40, 0x4C, 0xFF, 0x4D, 0xFF, 0x50, 0xF0, 0x54, 0x30,
0x55, 0x00, 0x5C, 0x04, 0x5D, 0x00, 0x60, 0x00, 0x68, 0x00, 0x69, 0x00,
0x6C, 0x06, 0x6D, 0x00, 0x70, 0x00, 0x71, 0x00, 0x72, 0x00, 0x78, 0x01,
0x79, 0x0C, 0x80, 0x10, 0x81, 0x00, 0x82, 0x00, 0x83, 0x00, 0x84, 0x00,
0x85, 0x00, 0x86, 0x00, 0x87, 0x00, 0x88, 0x04, 0x89, 0x10, 0x8A, 0x00,
0x8B, 0x00, 0x90, 0x05, 0x91, 0x0C, 0x92, 0x18, 0x93, 0x00, 0x96, 0x18,
0x9A, 0x30, 0x9C, 0x2D, 0x9D, 0x00, 0xA0, 0x00, 0xA1, 0x00, 0xA2, 0x00,
0xA4, 0x50, 0xA5, 0x50, 0xA6, 0xF0, 0xA7, 0xF0, 0xA8, 0x19, 0xA9, 0x18,
0xAA, 0x64, 0xAB, 0x64, 0xB0, 0x64, 0xB1, 0x64, 0xB4, 0xA4, 0xB5, 0xA5,
0xB8, 0x19, 0xB9, 0x18, 0xBC, 0x09, 0xBD, 0x09, 0xC0, 0x00, 0xC1, 0x02,
0xC4, 0x00, 0xC5, 0x00, 0xC8, 0x00, 0xC9, 0x08, 0xCA, 0x08, 0xCE, 0x00,
0xCF, 0x00, 0xD0, 0x00, 0xD1, 0x00, 0xD2, 0x00, 0xD8, 0x00, 0xD9, 0x00,
0xDA, 0x00, 0xDB, 0x00, 0xDC, 0x00, 0xDD, 0x00, 0x38, 0x46, 0x97, 0xA0,
0x97, 0x20, 0x97, 0xA0,
};
static
uchar bt812init[] = { /* bt812 initializations */
0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0xC0,
0x04, 0x08, 0x05, 0x00, 0x06, 0x40, 0x07, 0x00, 0x08, 0x10,
0x09, 0x90, 0x0A, 0x80, 0x0B, 0x00, 0x0C, 0x0C, 0x0D, 0x03,
0x0E, 0x66, 0x0F, 0x00, 0x10, 0x80, 0x11, 0x02, 0x12, 0x16,
0x13, 0x00, 0x14, 0xE5, 0x15, 0x01, 0x16, 0xAB, 0x17, 0xAA,
0x18, 0x12, 0x19, 0x51, 0x1A, 0x46, 0x1B, 0x00, 0x1C, 0x00,
0x1D, 0x37,
};
static ushort actpixs = 720;
static ulong Hdesired = 13500000L;
/* NTSC-M NTSC-443 EXTERNAL */
static ushort horzfreq[] = { 15734, 15625, 0 };
static ushort Vdelay[] = { 22, 25, 25 };
static ushort s2b[] = { 90, 90, 0 };
static ushort actlines[] = { 485, 485, 575 };
static ulong subcarfreq[] = { 3579545, 4433619, 4433619 };
static
unsigned int framewidth[5][4] = {
1024, 512, 512, 512, /* mode 0 - single, double, single, quad */
1536, 768, 768, 384, /* mode 1 - single, double, single, quad */
2048, 1024, 1024, 512, /* mode 2 - single, double, single, quad */
1024, 512, 512, 512, /* mode 3 - single, double, single, quad */
1536, 768, 768, 384 /* mode 4 - single, double, single, quad */
};
static
unsigned int frameheight[5][4] = {
512, 512, 1024, 512, /* mode 0 - single, double, single, quad */
512, 512, 1024, 512, /* mode 1 - single, double, single, quad */
512, 512, 1024, 512, /* mode 2 - single, double, single, quad */
512, 512, 1024, 512, /* mode 3 - single, double, single, quad */
512, 512, 1024, 256 /* mode 4 - single, double, single, quad */
};
static
uchar horzfilter[] = { 3, 3, 2, 2, 1, 1, 0, 0 };
static
uchar interleave[] = { 2, 3, 4, 2, 3 };
#define ADJUST(n) (((n) * hrsmult + hrsdiv - 1) / hrsdiv)
static int q = 100;
static int ilv = 2;
static int hrsmult = 1;
static int hrsdiv = 2;
static ushort panmask[] = { 0xFFFE, 0xFFFC, 0xFFFF, 0xFFFF, 0xFFFE };
static void
cropwindow(int left, int right, int top, int bottom)
{
top &= 0x3FE;
bottom &= 0x3FE;
setreg(InputHorzCropLeftA, left);
setreg(InputHorzCropLeftB, left >> 8);
setreg(InputHorzCropRightA, right);
setreg(InputHorzCropRightB, right >> 8);
setreg(InputHorzCropTopA, top);
setreg(InputHorzCropTopB, top >> 8);
setreg(InputHorzCropBottomA, bottom);
setreg(InputHorzCropBottomB, bottom >> 8);
}
static void
setinputformat(int format)
{
ushort hclock, hclockdesired;
ulong subcarrier;
int cr7;
cr7 = getbt812reg(7) & ~Bt7TriState;
if (format == External)
cr7 |= Bt7TriState;
setbt812reg(7, cr7);
setbt812reg(5, getbt812reg(5) & 2);
hclock = (xtalfreq >> 1) / horzfreq[format];
setbt812regpair(0x0C, hclock);
setbt812regpair(0x0E,
(ushort)(s2b[format] * (Hdesired / 10) / 1000000L) | 1);
setbt812regpair(0x10, actpixs);
setbt812regpair(0x12, Vdelay[format]);
setbt812regpair(0x14, actlines[format]);
subcarrier = (ulong)
((((long long)subcarfreq[format] * 0x1000000) / xtalfreq + 1) / 2);
setbt812regpair(0x16, (int)(subcarrier & 0xFFFF)); /* subcarrier */
setbt812reg(0x18, (int)(subcarrier >> 16));
setbt812reg(0x19, (uchar)(((xtalfreq / 200) * 675) / 1000000L + 8));
setbt812reg(0x1A, (uchar)((xtalfreq * 65) / 20000000L - 10));
hclockdesired = (ushort) (Hdesired / horzfreq[format]);
setbt812regpair(0x1B,
(ushort)(((hclock - hclockdesired) * 65536L) / hclockdesired));
}
static ushort
vgadivider(void)
{
ushort horztotal;
outb(VGAIndex, VGAHorzTotal);
horztotal = (inb(VGAData) << 3) + 40;
if (horztotal > ScreenWidth && horztotal < ((ScreenWidth * 3 ) / 2))
return horztotal;
else
return (ScreenWidth * 5) / 4;
}
static void
videoinit(void)
{
int i, reg, width, tuner;
/* early PLL smart lock initialization */
if (ScreenWidth == 640) {
slreg1 = Window|HSyncLow|VSyncLow;
slreg2 = 0x0D;
} else {
slreg1 = Window;
slreg2 = 0x0C;
}
outb(port+CompressReg, 2);
outb(port+SLReg1, slreg1);
outb(port+SLReg2, slreg2);
smartlockdiv((vgadivider() * hrsmult)/hrsdiv, vcogain, phdetgain, 2, 1);
/* program the VxP-500 chip (disables video) */
waitforretrace();
for (i = 0; i < sizeof(vxp500init); i += 2)
setreg(vxp500init[i], vxp500init[i+1]);
/* set memory base for frame capture */
setreg(MemoryWindowBaseAddrA, MemAddr >> 14);
setreg(MemoryWindowBaseAddrB, ((MemAddr >> 22) & 3) | (MemSize << 2));
setreg(MemoryPageReg, 0);
/* generic 422 decoder, mode 3 and 4 */
setreg(MemoryConfReg, ilv+1);
setreg(AcquisitionAddrA, 0);
setreg(AcquisitionAddrB, 0);
setreg(AcquisitionAddrC, 0);
/* program VxP-500 for correct sync polarity */
reg = ScreenWidth > 1023 ? 0x01 : 0x00;
reg |= (vsync << 1) | (hsync << 2);
setvgareg(reg);
setreg(VGAControl, reg);
setreg(VideoBufferLayoutControl, 0); /* for ilv = 2 */
/* set sync polarities to get proper blanking */
if (vsync)
slreg1 |= VSyncLow;
if (!hsync) {
slreg1 ^= HSyncLow;
setreg(VGAControl, reg | 4);
}
outb(port+SLReg1, slreg1);
if ((slreg1 & PixelClk) == 0) { /* smart lock active */
enablecolorkey(1);
setreg(VGAControl, getreg(VGAControl) & 6);
} else
enablecolorkey(0);
/* color key initializations */
if ((slreg1 & PixelClk) == 0)
setreg(VGAControl, getreg(VGAControl) & 7);
/* initialize Bt812 */
for (i = 0; i < sizeof(bt812init); i += 2)
setbt812reg(bt812init[i], bt812init[i+1]);
/* figure out clock source (Xtal or Oscillator) and revision */
setbt812reg(6, 0x40);
reg = getreg(InputFieldPixelBufStatus) & 3;
if ((getreg(InputFieldPixelBufStatus) & 3) == reg) {
/* crystal - could be revision PP if R34 is installed */
setbt812reg(6, 0x00);
reg = inb(port+SLReg1);
if (reg & 0x20) {
if ((reg & 0xE0) == 0xE0)
boardrev = HighQ;
else
boardrev = RevisionA;
} else
boardrev = RevisionPP;
} else /* revision A or newer with 27 MHz oscillator */
boardrev = RevisionA;
/* figure out xtal frequency */
if (xtalfreq == 0) {
if (boardrev == RevisionPP) {
tuner = (inb(port+SLReg1) >> 6) & 3;
if (tuner == 0) /* NTSC */
xtalfreq = 24545400L;
else
xtalfreq = 29500000L;
} else if (boardrev == HighQ)
xtalfreq = 29500000L;
else
xtalfreq = 27000000L;
}
// print("Hauppage revision %d (xtalfreq %ld)\n", boardrev, xtalfreq);
/* on RevPP boards set early sync, on rev A and newer clear it */
if (boardrev == RevisionPP)
setreg(InputVideoConfA, getreg(InputVideoConfA) | 4);
else
setreg(InputVideoConfA, getreg(InputVideoConfA) & ~4);
switch (xtalfreq) {
case 24545400L:
actpixs = 640;
break;
case 29500000L:
actpixs = 768;
break;
default:
actpixs = 720;
break;
}
/* set crop window (these values are for NTSC!) */
if (boardrev == RevisionPP) {
Hdesired = xtalfreq / 2;
cropleft = (NTSCCropLeft * ((Hdesired / 10))) / 1000000L;
cropright = (NTSCCropRight * ((Hdesired / 10))) / 1000000L;
} else {
cropleft = actpixs / 100;
cropright = actpixs - cropleft;
}
width = ((cropright - cropleft + ilv) / ilv) * ilv;
cropright = cropleft + width + 1;
croptop = 26;
cropbottom = 505;
cropwindow(cropleft, cropright, croptop, cropbottom);
/* set input format */
setinputformat(NTSC_M);
setsvideo(0);
}
static void
panwindow(Point p)
{
int memmode, ilv, frw;
ulong pos;
memmode = getreg(MemoryConfReg) & 7;
ilv = interleave[memmode];
frw = framewidth[memmode][getreg(VideoBufferLayoutControl) & 3];
pos = (p.y * (frw/ilv)) + ((p.x/ilv) & panmask[memmode]);
setreg(DisplayViewPortStartAddrA, (uchar) pos);
setreg(DisplayViewPortStartAddrB, (uchar) (pos >> 8));
setreg(DisplayViewPortStartAddrC, (uchar) (pos >> 16) & 0x03);
updateshadowregs();
}
static int
testqfactor(void)
{
ulong timo;
int reg;
waitvideoframe();
for (reg = 0, timo = ~0; timo; timo--) {
reg |= getreg(InputFieldPixelBufStatus);
if (reg & 0xE) break;
}
if (reg & 0xC) return 0;
waitvideoframe();
for (reg = 0, timo = ~0; timo; timo--) {
reg |= getreg(InputFieldPixelBufStatus);
if (reg & 0xE) break;
}
return (reg & 0xC) == 0;
}
static void
newwindow(Rectangle r)
{
unsigned ww, wh, dx, dy, xs, ys, xe, ye;
unsigned scalex, scaley;
int frwidth, frheight, vidwidth, vidheight;
int memmode, layout;
int width, height;
int filter, changed, val;
changed = r.min.x != window.min.x || r.min.y != window.min.y ||
r.max.x != window.max.x || r.max.y != window.max.y;
if (changed) window = r;
if (r.min.x < 0) r.min.x = 0;
if (r.max.x > ScreenWidth) r.max.x = ScreenWidth;
if (r.min.y < 0) r.min.y = 0;
if (r.max.y > ScreenHeight) r.max.y = ScreenHeight;
if ((dx = r.max.x - r.min.x) <= 0) dx = 1;
if ((dy = r.max.y - r.min.y) <= 0) dy = 1;
wh = dy;
ww = dx = ADJUST(dx);
r.min.x = (r.min.x * hrsmult) / hrsdiv;
memmode = getreg(MemoryConfReg) & 7;
layout = getreg(VideoBufferLayoutControl) & 3;
vidwidth = cropright - cropleft + 1;
vidheight = (cropbottom & 0x3FE) - (croptop & 0x3FE) + 1;
frwidth = min(framewidth[memmode][layout], vidwidth);
frheight = min(frameheight[memmode][layout], vidheight);
/* round up scale width to nearest multiple of interleave factor */
dx = ((ulong)dx * q) / 100;
dx = ilv * ((dx + ilv - 1) / ilv);
scalex = (((ulong)dx * 1024L) + vidwidth - 2) / (vidwidth - 1);
if (dy > frheight) dy = frheight - 1;
scaley = (((ulong)dy * 1024L) + vidheight - 2) / (vidheight - 1);
setreg(InputHorzScaleControlA, (scalex << 6) & 0xC0);
setreg(InputHorzScaleControlB, (scalex >> 2) & 0xFF);
setreg(InputVertScaleControlA, (scaley << 6) & 0xC0);
setreg(InputVertScaleControlB, (scaley >> 2) & 0xFF);
/* turn on horizontal filtering if we are scaling down */
setreg(InputHorzFilter, horzfilter[((scalex - 1) >> 7) & 7]);
/* set vertical interpolation */
filter = scaley > 512 ? (ScreenWidth == 640 ? 0x44 : 0xC5) : 0x46; /* magic */
if ((getreg(InputVertInterpolControl) & 0x1F) != (filter & 0x1F)) {
setreg(ISAControl, 0x80);
setreg(InputVertInterpolControl, filter & 0x1F);
setreg(ISAControl, 0x42);
}
setreg(AcquisitionControl, ((filter >> 6) ^ 3) | 0x04);
/* set viewport position and size */
width = ((ulong)ww * q) / 100;
if (width >= frwidth - ilv)
width = frwidth - ilv;
width = ((width + ilv - 1) / ilv) + 2;
height = ((ulong)wh * dy + wh - 1) / wh;
if (height >= frheight)
height = frheight - 3;
height += 2;
xs = r.min.x + XCorrection;
if (xs < 0) xs = 2;
ys = r.min.y + YCorrection;
if (ys < 0) ys = 2;
if (ScreenWidth > 1023) ys |= 1;
setreg(DisplayViewPortWidthA, width);
setreg(DisplayViewPortWidthB, width >> 8);
setreg(DisplayViewPortHeightA, height);
setreg(DisplayViewPortHeightB, height >> 8);
setreg(DisplayViewPortOrigTopA, ys);
setreg(DisplayViewPortOrigTopB, ys >> 8);
setreg(DisplayViewPortOrigLeftA, xs);
setreg(DisplayViewPortOrigLeftB, xs >> 8);
xe = r.min.x + ww - 1 + XCorrection;
if (xe < 0) xe = 2;
ye = r.min.y + wh - 1 + YCorrection;
if (ye < 0) ye = 2;
setreg(DisplayWindowLeftA, xs);
setreg(DisplayWindowLeftB, xs >> 8);
setreg(DisplayWindowRightA, xe);
setreg(DisplayWindowRightB, xe >> 8);
setreg(DisplayWindowTopA, ys);
setreg(DisplayWindowTopB, ys >> 8);
setreg(DisplayWindowBottomA, ye);
setreg(DisplayWindowBottomB, ye >> 8);
if (dx < ww) { /* horizontal zoom */
int zoom = ((ulong) (dx - 1) * 2048) / ww;
setreg(OutputProcControlA, getreg(OutputProcControlA) | 6);
setreg(OutputHorzZoomControlA, zoom);
setreg(OutputHorzZoomControlB, zoom >> 8);
} else
setreg(OutputProcControlA, getreg(OutputProcControlA) & 0xF9);
if (dy < wh) { /* vertical zoom */
int zoom = ((ulong) (dy - 1) * 2048) / wh;
setreg(OutputProcControlB, getreg(OutputProcControlB) | 1);
setreg(OutputVertZoomControlA, zoom);
setreg(OutputVertZoomControlB, zoom >> 8);
} else
setreg(OutputProcControlB, getreg(OutputProcControlB) & 0xFE);
setreg(OutputProcControlB, getreg(OutputProcControlB) | 0x20);
updateshadowregs();
if (changed) {
setreg(OutputProcControlA, getreg(OutputProcControlA) & 0xDF);
} else {
val = getreg(InputFieldPixelBufStatus);
USED(val);
}
panwindow(Pt(0, 0));
}
static void
createwindow(Rectangle r)
{
for (q = 100; q >= 30; q -= 10) {
newwindow(r);
if (testqfactor())
break;
}
enablevideo();
}
static void
setcontrols(int index, uchar val)
{
switch (index) {
case Vxp500Brightness:
setreg(BrightnessControl, (127L * val) / 100);
updateshadowregs();
break;
case Vxp500Contrast:
setreg(ContrastControl, (15L * val) / 100);
updateshadowregs();
break;
case Vxp500Saturation:
setreg(SaturationControl, (15L * val) / 100);
updateshadowregs();
break;
case Bt812Brightness:
setbt812reg(0x08, ((126L * val) / 100) & 0xFE);
break;
case Bt812Contrast:
setbt812reg(0x09, ((254L * val) / 100) & 0xFE);
break;
case Bt812Saturation:
setbt812reg(0x0A, ((254L * val) / 100) & 0xFE);
break;
case Bt812Hue:
setbt812reg(0x0B, ((254L * val) / 100) & 0xFE);
break;
case Bt812BW:
setbt812reg(0x05, (getbt812reg(0x5) & ~2) | ((val << 1) & 2));
break;
}
}
static void
enablememwindow(void)
{
setreg(MemoryWindowBaseAddrB, getreg(MemoryWindowBaseAddrB) | 0x20);
}
static void
disablememwindow(void)
{
setreg(MemoryWindowBaseAddrB, getreg(MemoryWindowBaseAddrB) & ~0x20);
}
volatile static ushort *fb = (ushort *)EISA(MemAddr);
static uchar yuvpadbound[] = { 4, 12, 4, 2, 6 };
/*
* Capture a frame in UY0, VY1 format
*/
static void *
saveframe(int *nb)
{
int memmode, layout, ilv;
int frwidth, frheight;
int bound, n, val, toggle;
unsigned save58, save6C;
int x, y, w, h, width, height;
ulong pos, size;
char *p;
static void *frame = 0;
static ulong framesize = 0;
width = capwindow.max.x - capwindow.min.x;
height = capwindow.max.y - capwindow.min.y;
memmode = getreg(MemoryConfReg) & 7;
if (memmode <= 2) {
print("devtv: cannot handle YUV411\n");
error(Egreg); /* actually, Eleendert */
}
layout = getreg(VideoBufferLayoutControl) & 3;
ilv = interleave[memmode];
frwidth = framewidth[memmode][layout];
frheight = frameheight[memmode][layout];
pos = getreg(AcquisitionAddrA) +
(getreg(AcquisitionAddrB) << 8) + (getreg(AcquisitionAddrC) & 3) << 16;
x = capwindow.min.x + (pos % frwidth);
y = capwindow.min.y + (pos / frwidth);
if (x > frwidth || y > frheight)
return 0;
if (x + width > frwidth)
width = frwidth - x;
if (y + height > frheight)
height = frheight - y;
pos = y * (frwidth / ilv) + (x / ilv);
/* compute padding for each scan line */
bound = yuvpadbound[memmode];
switch (bound) {
case 2:
width = (width + 1) & ~1;
break;
case 4:
width = (width + 3) & ~3;
break;
default:
width = (width + (bound - 1)) / bound;
break;
}
size = width * height * sizeof(ushort);
if (size != framesize) {
framesize = 0;
if (frame)
free(frame);
frame = malloc(size + 256);
}
if (frame == 0)
return 0;
memset(frame, 0, size + 256);
framesize = size;
p = (char *) frame + snprint(frame, 256,
"TYPE=ccir601\nWINDOW=%d %d %d %d\n\n",
capwindow.min.x, capwindow.min.y,
capwindow.min.x+width, capwindow.min.y+height);
freeze(1);
save58 = getreg(InputVertInterpolControl);
save6C = getreg(AcquisitionControl);
waitforretrace();
setreg(ISAControl, 0xC0); /* global reset */
setreg(InputVertInterpolControl, 0x0D);
setreg(AcquisitionControl, 0x04);
setreg(CaptureControl, 0x80); /* set capture mode */
setreg(VideoInputFrameBufDepthA, 0xFF);
setreg(VideoInputFrameBufDepthB, 0x03);
setreg(InputVideoConfA, getreg(InputVideoConfA) | 0x40);
setreg(ISAControl, 0x44); /* tight decode, global reset off */
setreg(CaptureViewPortAddrA, (int) pos & 0xFF);
setreg(CaptureViewPortAddrB, (int) (pos >> 8) & 0xFF);
setreg(CaptureViewPortAddrC, (int) (pos >> 16) & 0x03);
n = (width / ilv) - 1;
setreg(CaptureViewPortWidthA, n & 0xFF);
setreg(CaptureViewPortWidthB, n >> 8);
setreg(CaptureViewPortHeightA, (height-1) & 0xFF);
setreg(CaptureViewPortHeightB, (height-1) >> 8);
setreg(CapturePixelBufLow, 0x04); /* pix buffer low */
setreg(CapturePixelBufHigh, 0x0E); /* pix buffer high */
setreg(CaptureMultiBufDepthA, 0xFF); /* multi buffer depth maximum */
setreg(CaptureMultiBufDepthB, 0x03);
updateshadowregs();
setreg(CaptureControl, 0x90); /* capture reset */
val = getreg(InputFieldPixelBufStatus); /* clear read status */
USED(val);
toggle = !(getreg(OutputProcControlA) & 0x01) ? 0x8000 : 0x0000;
setreg(CaptureControl, 0xC0); /* capture enable, active */
while ((getreg(InputFieldPixelBufStatus) & 0x10) == 0)
/* wait for capture FIFO to become ready */;
enablememwindow();
for (h = height; h > 0; h--) {
for (w = width; w > 0; w -= 2) {
ushort uy0 = swab16(fb[0]) ^ toggle;
ushort vy1 = swab16(fb[1]) ^ toggle;
/* unfortunately p may not be properly aligned */
*p++ = uy0 >> 8;
*p++ = uy0;
*p++ = vy1 >> 8;
*p++ = vy1;
}
}
disablememwindow();
waitforretrace();
setreg(ISAControl, 0xC0); /* global reset */
setreg(CaptureControl, 0); /* clear capture mode */
setreg(InputVertInterpolControl, save58);
setreg(AcquisitionControl, save6C);
setreg(InputVideoConfA, getreg(InputVideoConfA) | 0x40);
setreg(ISAControl, 0x40); /* clear global reset */
updateshadowregs();
freeze(0);
*nb = p - (char *) frame;
return frame;
}