C / C++ / MFC

Member 3834630 wrote:

Any pointers for IProgressDialog example,

Member 3834630 wrote:

i am getting errors during compilation.

1. yes, it is possible: you have to use DirectShow to do it, instantiate two IGraphBuilder and connect each of them to a different device
2. you have to add an ISampleGrabber filter to each of the two IGraphBuilder: this will give you the ability to grab a frame from the two devices in your code and process them. Anyway, it depends on what you mean with real-time: the two devices are not synchronized each other, then the two frames are not referred to the same time (the maximum time unalignment between the two frames depends on the frame-rate of the two devices)

• Using DirectShow (Windows)[^]
• Basic DirectShow Tasks (Windows)[^]
• Video Capture (Windows)[^]
• Selecting a Capture Device (Windows)[^]
• PlayCap Sample (Windows)[^]: this is a sample from the Windows SDK that shows how to render the video stream of the first device found in the system
• AmCap Sample (Windows)[^]: a more sofisticated sample about video capture

void Job()
{
	char *data = strdup("1,aaa\r\n2,bbb\r\n3,ccc\r\n4,ddd\r\n");

	// count the dest array size
	char *p = data;
	int n = 0;
	while(*p)
	{
		if('\r' == *p)
		{
			n++;
			p++;
		}
		p++;
	}

	// create the dest arrays
	char **text = new char*[n];
	int *nums = new int[n];

	// start splitting
	int i = 0;
	char *tok = strtok(data, "\r\n");
	while(tok)
	{
		char *t = tok;
		while(*tok)
		{
			if(',' == *tok)
			{
				*tok = 0;
				nums[i] = atoi(t);
				t = tok+1;
			}
			tok++;
		}
		text[i] = strdup(t);
		i++;
		tok = strtok(NULL, "\r\n");
	}

	// clear all
	for(i = 0; i<n; i++)
		free(text[i]);
	delete [] text;
	delete [] nums;
	free(data);
}

char *szStr = "2,aaa\r\n3,bbb\r\n4,ccc\r\n5,ddd\r\n6,eee\r\n";

char *token1 = strtok(szStr, ",");
char *token2 = strtok(NULL, "\r\n");

// Get the first pair number/text from token1 and token2

int n = 1;

while (token1 != NULL && token2 != NULL && n < 5)
{
   token1 = strtok(NULL, ",");
   token2 = strtok(NULL, "\r\n");
   
   // Get the n-th pair number/text from token1 and token2

   n++;
}

char szStr[] = "2,aaa\r\n3,bbb\r\n4,ccc\r\n5,ddd\r\n6,eee\r\n";

char *token1 = strtok(szStr, ",");
char *token2 = strtok(NULL, "\r\n");

std::vector<int> nums;
std::vector<std::string> strings;

// Get the first pair number/text from token1 and token2
if (token1 != NULL && token2 != NULL)
{
   nums.push_back(atoi(token1));
   strings.push_back(token2);
}

while (token1 != NULL && token2 != NULL)
{
   token1 = strtok(NULL, ",");
   token2 = strtok(NULL, "\r\n");

   // Get the n-th pair number/text from token1 and token2
   if (token1 != NULL && token2 != NULL)
   {
      nums.push_back(atoi(token1));
      strings.push_back(token2);
   }
}