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Re: read/write to /dev/rtp is happening .. but a small problem [message #33805 is a reply to message #33784]

Thu, 15 September 2011 08:42

mirek
Messages: 14267
Registered: November 2005

Ultimate Member

Monty.mvh wrote on Tue, 13 September 2011 08:02

Hi,
I was able to perform read/write to /dev/rtp in upp using the below code structure..

#include <Core/Core.h>
using namespace Upp;

CONSOLE_APP_MAIN
{
	
	struct read
	{

		unsigned int status;
		unsigned int TimeOut;
	};

	read ReadArray;
	FileStream file;

	while ( 1 )
	{
		file.Open ( "/dev/rtp0",0 );
		file.Read (0, &ReadArray, sizeof ( ReadArray ) );

		Cout() << FormatInt(ReadArray.status )<< "\n";
    sleep(1);

	}
		
}

Here i used the class FileStream and the function file.Read();
To do this i had to do modifications in the header file stream.h
I changed the Class FileStream member function Read(); from Protected to Public.

But can i achieve the samething using class FileIn and its function Get();
I tried with the below code but did'nt get the incrementing pipe reading but got only a constant value repeating.

#include <Core/Core.h>

using namespace Upp;

CONSOLE_APP_MAIN
{

	struct read
	{

		unsigned int status;
		unsigned int TimeOut;
	};

	read ReadArray;
	FileIn file;

	while ( 1 )
	{
		file.Open ( "/dev/rtp0" );
		file.Get ( &ReadArray, sizeof ( ReadArray ) );

		Cout() << FormatInt ( ReadArray.status ) << "\n";
		sleep ( 1 );

	}

}

It is really not a good idea. File expects regular files.

If you insist on using Streams, you would have to develop your own. Perhaps look at Cout() implementation for that...

Mirek

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