urgent help - C / C++ / MFC Discussion Boards

David Crow5-Jan-08 4:33

5-Jan-08 4:33

What you have here is a big ol' mess. Why have you duplicated the code in both the .h and .cpp files? Put the class declaration in the .h file like:

class Centroids
{
public:
    void printArray( double a[3][4] );
};

Then put its definition in the .cpp file like:

#include "centroids.h"
 
void Centroids::printArray( double a[3][4] )
{
    using namespace std; // there's no need for twelve separate statements
 
    for (int i = 0; i < 3; i++)
    { 
        for (int j = 0; j < 4; j++)
            cout << setw(3) << setprecision(6) << setiosflags(ios::fixed | ios::showpoint) << a[i][j] << " ";
 
        cout << endl;
    }
}

li zhiyuan wrote:
int number = 1;

for (int number = 1;

Why do you have number declared twice?

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: how to set inlude of option?

CPallini5-Jan-08 4:35

CPallini

5-Jan-08 4:35

DavidCrow wrote:
Why do you have number defined twice?

He has the Visual Studio Dumb Edition C++ Compiler.
Big Grin | :-D

Thank you for pointing out code mess. I overlooked his code, focusing my attempts to help him to properly set the environment.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

Re: how to set inlude of option?

gentleguy6-Jan-08 0:07

gentleguy

6-Jan-08 0:07

did u find any problem in my code? after i seperated these code, it has a problem after combilation, the problem is like previous one thati showed you in last session.

thanks

Li Zhiyuan

6/01/2008

AVCODEC

Girish Kumar4-Jan-08 22:24

Girish Kumar

4-Jan-08 22:24

Hi Friends
I Am new to this site
i got one problem regarding playback of mpeg compressed files
iam using windows mfc for this
iam receiving the file from the board via tcp protocol and iam storing in the hard disk and then calling decompression function like this
Decompression("filename.M4V");
HERE I WANT DIRECTLY WITHOUT STORING IN THE HARD DISK
IF WE WON'T GIVE EXTENSION TO FILE(LIKE .M4V,.MP4 ETC)IT IS NOT WORKING AT THE FUNCTION guess_format OF AV LIBRARY.
THE DETAILS OF THIS guess_format FUNCTION I DON'T KNOW

while i am storing the file (around 2 mb) in the buffer and calling decompression it is not working.but if you take from hard disk it is working....
pls help me

here m providing the code for reference

int Decompression(char *inputfile)
{
const char *filename;
AVOutputFormat *fmt;
AVFormatContext *oc;
AVStream *video_st;
double video_pts;
unsigned int i = 0;
AVFormatContext *pFormatCtx;
int videoStream = 0;
AVCodecContext *pCodecCtx;
AVFrame *pFrame;
AVCodec *pCodec;
AVPacket packet;
int frameFinished;
const char *filenamei;
AVOutputFormat *fmt1;

// initialize libavcodec, and register all codecs and formats */
av_register_all();

filename = "Girish1.YUV";
filenamei = inputfile;

// auto detect the output format from the name. default is mpeg. */
fmt = guess_format(NULL, filename, NULL);
if (!fmt)
{
printf("Could not deduce output format from file extension: using MPEG.\n");
fmt = guess_format("mpeg", NULL, NULL);
}
if (!fmt)
{
fprintf(stderr, "Could not find suitable output format\n");
exit(1);
}

fmt1 = guess_format(NULL, filenamei, NULL);

if (!fmt1)
{
printf("Could not deduce input format from file extension: using MPEG.\n");
fmt1 = guess_format("mpeg", NULL, NULL);
}
if (!fmt1)
{
fprintf(stderr, "Could not find suitable input format\n");
exit(1);
}

// Open video file input

if(av_open_input_file(&pFormatCtx, filenamei, NULL, 10000, NULL)!=0)
{
printf("Couldn't open input file\n");
return NULL; // Couldn't open file
}

// Retrieve stream information
if(av_find_stream_info(pFormatCtx)<0)
{
printf("Couldn't find stream information\n");
return NULL; // Couldn't open file
} // Couldn't find stream information

// Dump information about file onto standard error
dump_format(pFormatCtx, 0, filenamei, false);

// Find the first video stream
videoStream=-1;
for(i=0; i < (pFormatCtx->nb_streams); i++)
if(pFormatCtx->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO)
{
videoStream=i;
break;
}

if(videoStream==-1)
{
printf("Didn't find a video stream\n");
return NULL; // Didn't find a video stream
}

// Get a pointer to the codec context for the video stream
pCodecCtx=pFormatCtx->streams[videoStream]->codec;

pCodecCtx->width = RESW;
pCodecCtx->height =RESH;

// Find the decoder for the video stream
pCodec=avcodec_find_decoder(pCodecCtx->codec_id);
if(pCodec==NULL)
{
printf("Codec not found\n");
return NULL; // Codec not found
}
// bitstreams where frame boundaries can fall in the middle of packets
/* if(pCodec->capabilities & CODEC_CAP_TRUNCATED)
{
pCodecCtx->flags|=CODEC_FLAG_TRUNCATED;
}*/

// Open codec
if(avcodec_open(pCodecCtx, pCodec)<0)
{
printf("Could not open codec\n");
return NULL; // Could not open codec
}

// Allocate video frame

/*pFrame = alloc_picture(pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height);
if (!pFrame)
{
fprintf(stderr, "Could not allocate picture\n");
exit(1);
}*/

// allocate the output format context */
oc = av_alloc_format_context();
if (!oc)
{
fprintf(stderr, "Memory error\n");
exit(1);
}

oc->oformat = fmt;
_snprintf(oc->filename, sizeof(oc->filename), "%s", filename);

// add the video streams using the default format codecs and initialize the codecs
video_st = NULL;

if (fmt->video_codec != CODEC_ID_NONE)
{
video_st = add_video_stream(oc, fmt->video_codec);
}

// set the output parameters
if (av_set_parameters(oc, NULL) < 0)
{
fprintf(stderr, "Invalid output format parameters\n");
exit(1);
}

dump_format(oc, 0, filename, 1);

// now that all the parameters are set, we can open the video codecs and allocate the necessary encode buffers
if (video_st)
{
if(!(open_video(oc, video_st)))
{
printf("\nfailed to open videostream for output");
exit(1);
}
}

// open the output file, if needed */
if (!(fmt->flags & AVFMT_NOFILE))
{
if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0)
{
fprintf(stderr, "Could not open '%s'\n", filename);
exit(1);
}
}

// write the stream header, if any
if((av_write_header(oc)) != 0)
{
printf("\nfailed to write the header");
}

for(;;k++)
{
// compute current video time
if (video_st)
{
video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
}
else
{
video_pts = 0.0;
}

pFrame = alloc_picture(pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height);
if (!pFrame)
{
fprintf(stderr, "Could not allocate picture\n");
exit(1);
}

// write interleaved video frames */

if(av_read_frame(pFormatCtx, &packet)>=0)
{

if(packet.stream_index==videoStream)
{
// Decode video frame

avcodec_decode_video(pCodecCtx, pFrame, &frameFinished, packet.data, packet.size);
video_outbuf_size1 = 2000000; //by me
video_outbuf1 = (unsigned char *) av_malloc(video_outbuf_size1);
if(not_init == false)
{
not_init = true;
InitConvertTable();
}

// ConvertYUVtoYUV(320,240,(unsigned int*)pFrame,(unsigned int*)pFrame);
ConvertYUV2RGB((unsigned char*)pFrame->data[0],(unsigned char*)pFrame->data[1],(unsigned char*)pFrame->data[2],video_outbuf1,RESW,RESH);

PostMessage(g_hWnd,ON_RENDER,(unsigned long)video_outbuf1, NULL);

//Sleep(100);

// Did we get a video frame?
if(frameFinished)
{
if(!(write_video_frame(oc, video_st,pFrame,i)))
{
printf("\nfailed to write the video frame");
exit(1);
}
av_free_packet(&packet);
av_free(pFrame);
}
}

}

else
break;

}

//av_free_packet(&packet);
//av_free(pFrame);

// close each codec */
if (video_st)
{
close_video(oc, video_st);
}

// write the trailer, if any */
if((av_write_trailer(oc)) != 0)
{
printf("\nfailed to write the trailer");
}

// free the streams */
for(i = 0; i < oc->nb_streams; i++)
{
av_freep(&oc->streams[i]->codec);
av_freep(&oc->streams[i]);
}

if (!(fmt->flags & AVFMT_NOFILE))
{
// close the output file */
url_fclose(&oc->pb);
}

// free the stream */
av_free(oc);
av_free(video_outbuf1);

// Close the codec
avcodec_close(pCodecCtx);

// Close the video file
av_close_input_file(pFormatCtx);

//free(p);

return 0;
}

Girish

Girish

Convert Date to EXCEL Numeric

im_hoser4-Jan-08 21:10

im_hoser

4-Jan-08 21:10

In excel you can convert a date of 1/4/2008 to 39451 by formating a the cell to numeric.
Not sure how excel does this but would like to do the same thing in my VB.Net program.
Has anyone come across this? ANy Idea's?

Regards
Frown | :(

Re: Convert Date to EXCEL Numeric

CPallini5-Jan-08 0:50

CPallini

5-Jan-08 0:50

If you have a look at Excel documentation (date serial numbers) , then a rough procedure maybe

Dim i As Long
Dim dt0 As DateTime, dt1 As DateTime
dt1 = New DateTime(2008, 1, 4)
dt0 = New DateTime(1900, 1, 1)
i = (dt1 - dt0).Days + 2

Please note, this doesn't return decimal numbers on fraction of days (as Excel does).
BTW try also to ask the VB/VB.NET forum.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

Probelm in calling ActiveX VB dll

manoharbalu4-Jan-08 19:35

manoharbalu

4-Jan-08 19:35

Hi,

I created a VB activex dll.In vc++6 i use this DLL in my application path. I used classwizard Automation tab,Import class From Type library,chosen the path of DLL.It worked fine.

IF i change the application to someother path, the DLL did not work.

How to make my application to refer the DLL in the application path?

Manohar

urgent help

gentleguy4-Jan-08 19:22

gentleguy

4-Jan-08 19:22

dear all

the following is what i did, but it is smooth to compile, but after i seperate this code to two, one is header file, the other is cpp....output showed me:
fatal error C1083: Cannot open include file: 'Centroids.h': No such file or directory

so what happened? the seperate code is in second phase.

class Centroids
{

public:
void printArray(double a[3][4] )
{
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 4; j++)

cout << setw(3) << setprecision(6) << setiosflags(ios::fixed|ios::showpoint) << a[i][j] << " ";
cout << endl;

}

}
private:

double a[3][4];

};

int main()
{
Centroids matrix;
int number = 1;

for (int number = 1; number <=10; number++)
{

double a[3][4] = {{(double)rand()/RAND_MAX, (double)rand()/RAND_MAX, (double)rand()/RAND_MAX,( double)rand()/RAND_MAX},{(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX},{(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX}};

cout << setw(4) << number << endl;
matrix.printArray(a);
cout << endl;
}
number = number + 1;

return 0;
}

the following is seperate code:

cpp

void Centroids::oneCentroid(double a[3][4])
{

for (double i = 0; i < 3; i++)
{

for (double j = 0; j < 4; j++)

cout << setw(3) << setprecision(6) << setiosflags(ios::fixed|iso::showpoint) << a[i][j] << " ";
cout << endl;
}
}

int main()
{

Centroids matrix;
int number = 1;

for (number = 1; number <=10; number++)

{
double a[3][4] = {{(double)rand()/RAND_MAX, (double)rand()/RAND_MAX, (double)rand()/RAND_MAX,( double)rand()/RAND_MAX},{(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX},{(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX,(double)rand()/RAND_MAX}};
cout << setw(4) << number << endl;
matrix.oneCentroid(a);
cout << endl;
}
number = number + 1;

return 0;

}

header file

class Centroids
{
public:
void oneCentroid(double [3][4]);

private:
double a[3][4];
};

thanks a lot

Li Zhiyuan

5/01/2008

Re: urgent help

CPallini4-Jan-08 23:09

CPallini

4-Jan-08 23:09

How did you include you header (.h) file inside the source (.cpp) one?
Should be via

#include "Centroids.h"

Did you put the header file inside the project source folder?
Did you add the header file to the project?

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

Re: urgent help

gentleguy5-Jan-08 1:20

gentleguy

5-Jan-08 1:20

yes, i added the #include "Centroids.h" in cpp file, the Centroids.h is a class in header file...

i combined together header file and cpp file, it can compile smoothly, after i seperated, output showed me:

fatal error C1083: Cannot open include file: 'Centroids.h': No such file or directory

i dun know how to set this include path.

thanks

Li Zhiyuan

5/10/2006

Re: urgent help

Joan M5-Jan-08 2:14

Joan M

5-Jan-08 2:14

Are the two files inside the same folder? If they are not then you must provide a path:

#include "..\..\Centroids.h".

Hope this helps..

Problem with using SENS and the COM Event System in VC++

ashishbhatt4-Jan-08 17:40

ashishbhatt

4-Jan-08 17:40

Hi All,,

I want little much help from the masters.Let me explain my problem in full description.

I want to make service in that I want to catch the events of Logon and Logoff.So, I decided to use
SENS and the COM Event System to use ISensLogon interface.

But My problem is that I have created simple Empty project from VC++ in that I have created service(including .cpp file).And this service runs fine.But now in this project how can I use these SENS and COM Event System. D'Oh! | :doh:

I got little much knowledge from the online help that to use event system I have to include EventSys.h and for SENS I have to include Sensevts.h.And also how to access ISensLogon's methods GUIDs in my project.

Can Anyone atleast guide me how to include these things in my project??

Your answer will be greatly appreciated.

Thanking you. Rose | [Rose]

Ashish Bhatt,
System Developer,
Avinashi System Pvt. Ltd.

Re: Problem with using SENS and the COM Event System in VC++

David Crow4-Jan-08 17:50

David Crow

4-Jan-08 17:50

Have you seen this article. It's about ISensNetwork, but the steps are identical.

Re: Problem with using SENS and the COM Event System in VC++

ashishbhatt4-Jan-08 18:12

ashishbhatt

4-Jan-08 18:12

Thank you very much for reply.

Now I got the right point. Big Grin | :-D

I have seen this article before posting this thread but as explained in this article it is about ATL COM Application and also in that they have used ATL Simple Object and also Implement Interface.

I tried to include ATL Object in my project but it does allow ATL support to my Application because my application in simple Empty project( I hope ATL object Allows only to MFC PRoject And full ATL support project).SO, now how can I use this Interface into my project. D'Oh! | :doh:

Is there any other alternative to use SENS And Event System??

Thanks.

Ashish Bhatt,
System Developer,
Avinashi System Pvt. Ltd.

How to get local ip address

shakumar_224-Jan-08 17:18

shakumar_22

4-Jan-08 17:18

Hi
In my VC 6.0 application , i get local host name , but can't get local ip address. Give me suggestion or code to get local ip address .Below given the code that retrieve the host name.

#include "winsock2.h"
void Sampleappl::GetLocalIpaddress()
{ WSADATA ws;
int recws=WSAStartup(MAKEWORD(2,2),&ws);
if(recws!=NOERROR)
{
MessageBox(NULL,"WSAStartUp Error","ERROR",MB_OK);
return 0;
}
char ipadd[15];
gethostname(ipadd,sizeof(ipadd));
MessageBox(NULL,ipadd,"Local ip address",MB_OK);
return;

}

regards
shakumar

shakumar

Re: How to get local ip address

David Crow4-Jan-08 17:46

David Crow

4-Jan-08 17:46

After calling gethostname(), call gethostbyname() to get the IP address.

Re: How to get local ip address

Hamid_RT4-Jan-08 18:01

Hamid_RT

4-Jan-08 18:01

See Getting Addresses IP informations[^].

upgrading dbghelp.dll

DevMentor.org4-Jan-08 9:20

DevMentor.org

4-Jan-08 9:20

Does anyone know how I can upgrade dbghelp.dll?

---
Yours Truly, The One and Only!
web: devmentor.org
Design, Code, Test, Deploy

Re: upgrading dbghelp.dll

DevMentor.org4-Jan-08 9:49

DevMentor.org

4-Jan-08 9:49

I've found out that it seems one cannot replace or upgrade the dbghelp.dll that comes installed with the system. If anyone knows otherwise, please let me know!

---
Yours Truly, The One and Only!
web: devmentor.org
Design, Code, Test, Deploy

Text height in CRichEditCtrl

DougVC4-Jan-08 7:24

DougVC

4-Jan-08 7:24

I am attempting to find how many rows of text will print per page from a rich edit control in a dialog box. Is there a method for finding the actual height of a text line? Neither the LOGFONT nor the CHARFORMAT nor the TEXTMETRIC structures provide this info accurately.

Doug C

Re: Text height in CRichEditCtrl

CPallini4-Jan-08 7:36

CPallini

4-Jan-08 7:36

Have a look at http://msdn2.microsoft.com/en-us/library/ms534223.aspx[^]

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

Re: Text height in CRichEditCtrl

Mark Salsbery4-Jan-08 8:26

Mark Salsbery

4-Jan-08 8:26

Since rich edit text can have different formatting, the number of
lines per page can vary.

The only reliable way I know is to format the text for the device it
will be printed on, then calculate how many rows.

With a combination of some of the code here[^] and the EM_EXLINEFROMCHAR
message, you should be able to calculate the number of lines per page.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Need some idea or const way to do this?

Hakan Bulut4-Jan-08 7:16

Hakan Bulut

4-Jan-08 7:16

A moved rectangle how does secure to the const size of itself. Forexample CRect(10,10); It must secure to these sizes when it go move forward. Please help with MFC.

Bitte tun Sie mir nicht antworten, wenn Sie nicht wissen, die Ursache des Problems wirklich oder nur als Antwort. Was ist das? Dies ist das Buch sitzen.

Re: Need some idea or const way to do this?

Maxwell Chen4-Jan-08 7:26

Maxwell Chen

4-Jan-08 7:26

CRect rect(10, 10, 90, 90);
rect.MoveToXY(3, 5);

Maxwell Chen

Re: Need some idea or const way to do this?

CPallini4-Jan-08 7:39

CPallini

4-Jan-08 7:39

Hakan D wrote:
CRect(10,10);

Where did you find such a contructor?

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

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