int PrintCC(void)
{
char buffer[32];
FormatCC(buffer);
fprintf(stdout, buffer);
return(strlen(buffer));
}
void set_flags(y86_register val_new, int sign_A, int sign_B)
{
/* zero flag if the new value is zero */
ZF = (val_new == 0);
/* sign flag if the new value is negative -- sign bit is one */
SF = sign_bit(val_new);
/* overflow flag is if the signs of the input (sign_A and sign_B) are
the same, and different from the result (val_new) */
if (sign_A != sign_B)
OF = 0;
else if (sign_A == sign_bit(val_new))
OF = 0;
else
OF = 1;
if (debug) fprintf(stdout, "ZF=%d, SF=%d, OF=%d\n", ZF, SF, OF);
char buffer[32];
FormatCC(buffer);
strcat(buffer, " -> CC");
Part2Trace(buffer);
}
void V4LRecorder::RunVBIDevice(void)
{
if (vbi_fd < 0)
return;
unsigned char *buf = NULL, *ptr = NULL, *ptr_end = NULL;
if (ntsc_vbi_width)
{
uint sz = ntsc_vbi_width * ntsc_vbi_line_count * 2;
buf = ptr = new unsigned char[sz];
ptr_end = buf + sz;
}
while (IsHelperRequested() && !IsErrored())
{
if (PauseAndWait())
continue;
if (!IsHelperRequested() || IsErrored())
break;
struct timeval tv;
fd_set rdset;
tv.tv_sec = 0;
tv.tv_usec = 5000;
FD_ZERO(&rdset);
FD_SET(vbi_fd, &rdset);
int nr = select(vbi_fd + 1, &rdset, 0, 0, &tv);
if (nr < 0)
LOG(VB_GENERAL, LOG_ERR, LOC + "vbi select failed" + ENO);
if (nr <= 0)
{
if (nr==0)
LOG(VB_GENERAL, LOG_DEBUG, LOC + "vbi select timed out");
continue; // either failed or timed out..
}
if (VBIMode::PAL_TT == vbimode)
{
pal_vbi_cb->foundteletextpage = false;
vbi_handler(pal_vbi_tt, pal_vbi_tt->fd);
if (pal_vbi_cb->foundteletextpage)
{
// decode VBI as teletext subtitles
FormatTT(pal_vbi_cb);
}
}
else if (VBIMode::NTSC_CC == vbimode)
{
int ret = read(vbi_fd, ptr, ptr_end - ptr);
ptr = (ret > 0) ? ptr + ret : ptr;
if ((ptr_end - ptr) == 0)
{
unsigned char *line21_field1 =
buf + ((21 - ntsc_vbi_start_line) * ntsc_vbi_width);
unsigned char *line21_field2 =
buf + ((ntsc_vbi_line_count + 21 - ntsc_vbi_start_line)
* ntsc_vbi_width);
bool cc1 = vbi608->ExtractCC12(line21_field1, ntsc_vbi_width);
bool cc2 = vbi608->ExtractCC34(line21_field2, ntsc_vbi_width);
if (cc1 || cc2)
{
int code1 = vbi608->GetCode1();
int code2 = vbi608->GetCode2();
code1 = (0xFFFF==code1) ? -1 : code1;
code2 = (0xFFFF==code2) ? -1 : code2;
FormatCC(code1, code2);
}
ptr = buf;
}
else if (ret < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Reading VBI data" + ENO);
}
}
}
if (buf)
delete [] buf;
}
