void ChannelRenderArea::generatePainterPath(void)
{
int current_x, current_y, oldval, newval;
int low = this->height() - 2, high = 2, ch = getChannelNumber();
uint64_t ss = getSampleStart(), se = getSampleEnd();
if (sample_buffer == NULL)
return;
delete painterPath;
painterPath = new QPainterPath();
current_x = 0;
oldval = getbit(sample_buffer, 0, ch);
current_y = (oldval) ? high : low;
painterPath->moveTo(current_x, current_y);
for (uint64_t i = ss + 1; i < se; ++i) {
current_x += 2;
newval = getbit(sample_buffer, i, ch);
if (oldval != newval) {
painterPath->lineTo(current_x, current_y);
current_y = (newval) ? high : low;
painterPath->lineTo(current_x, current_y);
oldval = newval;
}
}
painterPath->lineTo(current_x, current_y);
/* Force a redraw. */
this->update();
}
bool CLASS::init( IOService * provider,
OSDictionary * properties,
IORegistryEntry * dtEntry )
{
if ( dtEntry )
{
if ( super::init( dtEntry, gIODTPlane ) == false ||
mergeProperties( properties ) == false )
return false;
}
else
{
if ( super::init( properties ) == false )
return false;
}
fProvider = OSDynamicCast(AppleOnboardPCATARoot, provider);
if (fProvider == 0)
return false;
// Call platform to register the interrupt assigned to each ATA
// channel. For PCI interrupts (native mode), each channel will
// share the same interrupt vector assigned to the PCI device.
// Legacy mode channels will attempt to register IRQ 14 and 15.
UInt32 vector = getInterruptVector();
if (provider->callPlatformFunction( "SetDeviceInterrupts",
/* waitForFunction */ false,
/* nub */ this,
/* vectors */ (void *) &vector,
/* vectorCount */ (void *) 1,
/* exclusive */ (void *) false )
!= kIOReturnSuccess)
{
return false;
}
setLocation( getChannelNumber() ? "1" : "0" );
return true;
}
