C++ (Cpp) DREraseSetProperties Examples

Example #1

File: dru_burning.c Project: fruitsamples/audioburntest

/*
	druErase
	
	Called to do a erase. Pass in the device and a flag to indicate a full or quick erase.
*/
int
druErase(DRDeviceRef device, int fullErase)
{
	DREraseRef					erase = NULL;
	DRNotificationCenterRef		notificationCenter = NULL;
	CFRunLoopSourceRef			source = NULL;
	druBurnStatus				status = {0, NULL, NULL, NULL, {0}, 0};
	CFMutableDictionaryRef		properties;

	erase = DREraseCreate(device);

	if (erase != NULL)
	{
		/* Create a progress bar. */
		status.progressBar = druProgressBarCreate();
		
		/* Sign up for notifications from the erase object. */
		notificationCenter = DRNotificationCenterCreate();
		source = DRNotificationCenterCreateRunLoopSource(notificationCenter);
		CFRunLoopAddSource(CFRunLoopGetCurrent(), source, kCFRunLoopCommonModes);
		DRNotificationCenterAddObserver(notificationCenter,&status,druProgressCallback,kDREraseStatusChangedNotification, erase);
		
		/* setup erase properties for type of erase to be performed */
		properties = CFDictionaryCreateMutable(NULL,0,&kCFTypeDictionaryKeyCallBacks,&kCFTypeDictionaryValueCallBacks);
		if (fullErase)
			CFDictionaryAddValue(properties,kDREraseTypeKey,kDREraseTypeComplete);
		else
			CFDictionaryAddValue(properties,kDREraseTypeKey,kDREraseTypeQuick);
		DREraseSetProperties(erase, properties);
		
		/* Okay, start the erase. */
		DREraseStart(erase);
		
		/* Enter a runloop until the burn finishes. */
		CFRunLoopRun();
		
		/* Clean up memory and exit. */
		CFRunLoopSourceInvalidate(source);
		if (notificationCenter != NULL)	CFRelease(notificationCenter);
		if (source != NULL)				CFRelease(source);
		if (status.progressBar != NULL)	druProgressBarDispose(status.progressBar,status.success);
		CFRelease(erase);
	}
	if (status.success)
		printf("Erase completed.\n");
	else
		druPrintFailureMessage("Erase", status.completionStatus);
	if (status.completionStatus != NULL)	CFRelease(status.completionStatus);
	
	return status.success;
}

Example #2

File: portburn_macosx.cpp Project: AkiraShirase/audacity

/* Erase the media in the currently opened device */
int PortBurn_StartErasing(void *handle, int type)
{
   CFMutableDictionaryRef props;

   PBHandle *h = (PBHandle *)handle;

   if (h == NULL) {
      return pbErrNoHandle;
   }

   if (h->device == NULL) {
      return pbErrDeviceNotOpen;
   }

   if (h->burn != NULL || h->erase != NULL) {
      return pbErrCannotStartErasing;
   }

   h->erase = DREraseCreate(h->device);
   if (h->erase == NULL) {
      return pbErrCannotPrepareToErase;
   }

   props = CFDictionaryCreateMutableCopy(NULL, 0, DREraseGetProperties(h->erase));
   if (props == NULL) {
      CFRelease(h->erase);
      h->erase = NULL;
      return pbErrCannotPrepareToErase;
   }

   CFDictionaryAddValue(props,
                        kDREraseTypeKey,
                        type ? kDREraseTypeComplete : kDREraseTypeQuick);

   DREraseSetProperties(h->erase, props);

   CFRelease(props);

   h->frac = 0.0;

   h->err = DREraseStart(h->erase);
   if (h->err != noErr) {
      CFRelease(h->erase);
      h->erase = NULL;
      return pbErrCannotStartErasing;
   }

   return pbSuccess;
}