[Live-devel] calling Live555 libraries from a C app under Embedded Visual C++ 4.0

[Bertram Junker]

Hi Rodrigo,

my application is written in C++. I have renamed the main() function of 
the Test-Application playSIP in playCommon.cpp from
	main(int argc, char** argv)
to
	mainplayCommon(int argc, char** argv)

and then in my own application I declare
	extern int mainplayCommon(int, char**);

So I can call later in my application the complete testProgramm playSIP 
like this:
	
	char *progName = "playSIP";
	const int argc = 12;
	char *argOne	= "-V";
	char *argTwo	= "-M";
	char *argThree	= "-A";
	char *argFour	= "8";
	char *argFive	= "-e";
	char *argSix	= "10";
	char *argSeven	= "-P";
	char *argEight	= "49211";
	char *argNine	= "-W";
	char *argTen	= "0";
	char *argEleven  = "172.16.1.100";

	char * argv[argc];
	argv[ 0] = progName;
	argv[ 1] = argOne;
	argv[ 2] = argTwo;
	argv[ 3] = argThree;
	argv[ 4] = argFour;
	argv[ 5] = argFive;
	argv[ 6] = argSix;
	argv[ 7] = argSeven;
	argv[ 8] = argEight;
	argv[ 9] = argNine;
	argv[10] = argTen;
	argv[11] = argEleven;

	mainplayCommon(argc,argv, this->m_frame);

Did this help you?

For an easier way to build my programm for Win32 and WinCE with one GUI 
and one Code my programm is build-on the minimalSample from wxWidgets. I 
don't know if this is realy intersting for your problem. But this sample 
has one base code and you could build the same code with the same GUI 
for Win32 and WinCE. In this sample if have include the code above.

Best regard,

    Bertram


Rodrigo Weymar schrieb:

> Hi Bertram,
> 
> 
> is your application written in C or C++ ? Were you able to mix C and C++
> code and to declare C++ functions as extern "C" under EVC++ without using
> #ifdef __cplusplus ?
> 
> If I try to use extern "C" under EVC++ without using #ifdef __cplusplus, I
> get a
> 
> error C2059: syntax error : 'string'
> 
> as explained in http://www.kbalertz.com/kb_133070.aspx
> 
> 
> regards,
> Rodrigo
> 
> 
> 
> 
>>Hi Rodrigo,
>>
>>i have written an SIP phone with RTP Stack from LIVE555 for Pocket PC /
>>Windows CE with EVC++ 4.0. Unfortunately I'm not able to solve your
>>problem but I can ensure you, that LIVE555 works fine under EVC++.
>>Further, I remember me fine, I have not set up any preprocessor directive.
>>
>>Best regards,
>>
>>    Bertram
>>
>>
>>
>>>Hi all,
>>>
>>>probably this is not the right mailing list to ask, since my question is
>>>not directly concerning the Live555 libraries. But maybe someone can
>>>help
>>>me or give me an advice.
>>>
>>>I am trying to integrate the Live555 libs (I am interested in the RTSP
>>>support provided by these libs) into an C app, more exactly a streaming
>>>player for Pocket PC/WinCE420, which is written in C.
>>>
>>>I use Embedded Visual C++ 4.0 as IDE.
>>>
>>>I don't get any compilation errors, since from the C source code I am
>>>using the following preprocessor directive:
>>>
>>>#ifdef __cplusplus
>>>extern "C" {
>>>
>>>here I put the Live555 C++ classes
>>>
>>>}
>>>#endif
>>>
>>>
>>>What happens is that, when I run the app, the Live555 classes don't take
>>>any effect. That is, the Embedded Visual C++  C/C++ compiler seems to
>>>just
>>>ignore what is in between the preprocessor directives. It seems to have
>>>not linked the C++ classes to the C objs.
>>>
>>>The document in [1] says that the C++ runtime libraries should be
>>>explicitly
>>>linked to the app. The problem is that I can not figure out how Embedded
>>>Visual C++ manages that. I was not able to find any option in "Project
>>>Settings" or in "Tools -> Options" concerning that.
>>>
>>>I also googled for solutions, but was not able to find one.
>>>
>>>Would someone have previous experience with that? Could someone give me
>>>help, please ?
>>>
>>>
>>>Thanks a lot!
>>>
>>>Rodrigo
>>>
>>>
>>>[1] http://developers.sun.com/prodtech/cc/articles/mixing.html#linking
>>>
>>>_______________________________________________
>>>live-devel mailing list
>>>live-devel at lists.live555.com
>>>http://lists.live555.com/mailman/listinfo/live-devel
>>>
>>
>>
>>_______________________________________________
>>live-devel mailing list
>>live-devel at lists.live555.com
>>http://lists.live555.com/mailman/listinfo/live-devel
>>
> 
> 
> 
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