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  1. Replies
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    4,624

    video compression limitations

    hi,all! I implemented MPEG2 video doing routine to record video clips in symbian C++ app. It works but the compression time is a bit long. I also downloaded the video recorder from Hantro, that one...
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    UDP socket example for 7650

    Hi, all! Is there any example applications on using UDP socket for 7650? I'm currently using TCP socket, but the transmission is quite slow.. Please help. Thanks in advance!
    Regards,
    xiaoyu
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    6,441

    UDP socket example for 7650

    Hi, all! Is there any example applications on using UDP socket for 7650? I'm currently using TCP socket, but the transmission is quite slow.. Please help. Thanks in advance!
    Regards,
    xiaoyu
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    4,163

    write to socket

    hi, all! another question regarding the TCP socket.. When i call

    iSocket->write(mydata,requeststatus);
    itimer->After(timeout);
    SetActive();
    iWriteStatus = ESending;

    then the data is written...
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    4,779

    TCP socket

    Hi, i'm using TCP socket to send my video files, but due to the flow control and ongestion control, the transmission is quite slow. So i'd like to change to UDP socket. So anybody knows how to use...
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    6,334

    TCP UDP socket

    hi, all! I used tcp socket to send video files to my pc, it works fine, but the transimission was very slow. GPRS should provides about 40 kbps bandwidth, but sending a 25k clip takes 40 seconds!...
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    5,260

    TCP UDP socket

    hi, all! I used tcp socket to send video files to my pc, it works fine, but the transimission was very slow. GPRS should provides about 40 kbps bandwidth, but sending a 25k clip takes 40 seconds!...
  8. Hi, i didn't try getscanline, so not sure whether...

    Hi, i didn't try getscanline, so not sure whether it works. I used getpixel and retrieve teh Red, Green, Blue color values (of type TInt), it worked well. After that, i converted RGB to YUV format,...
  9. hi, i allocated memory for frame data on heap. U...

    hi, i allocated memory for frame data on heap. U can use User::Alloc(size). And each time i only need one frame's data, i think u can also allocate for multiply frames in the same way, but the total...
  10. video cpature application testing on Nokia 7650 emulator

    Hi, all! I need to test my video capturing application on te emulator, but the pictures taken are always the same one (provided by CameraServ), thus i can not see the motion. So everytime i need to...
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    4,331

    Virtual Series Ports Driver on Laptop

    Hi, all. In my previous testing for Sockets connection, i am using the virtual series ports driver (VSPD-XP3) on my desktop, it works fine. but there is only one COM port on laptop, so will the VSPD...
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    4,204

    Virtual Series Ports Driver on Laptop

    Hi, all. In my previous testing for Sockets connection, i am using the virtual series ports driver (VSPD-XP3) on my desktop, it works fine. but there is only one COM port on laptop, so will the VSPD...
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    7,225

    how to get System time

    Hi, all! How can i get the system time from my C++ application? Since i need to measure the video compression time. Please help! Thanks inadvance!

    Regards,
    xiaoyu
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    4,485

    multithread

    Hi, all! In my application i'd like to encode and send short video clips continuously, like a video stream. Currently it's implemented like this: encode and send one short clip, when finish sending,...
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    5,569

    maximum buffer size

    Hi, all. In my vidoe recording application, large amount of data needs to be stored, currently i save them in file. But the file writing takes a very long time, which is even longer than the actual...
  16. How to delete files without using own applications?

    Hi, all! In my app, i captured a video clip and save it as "C:\nokia\videos\mpeg2_video", i can delete it in my app after sending it to my pc. But I'd like to know how can i locate the file without...
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    I used active object, but still didn't work

    Hi, now i implement the encoder class as an active object, the fuction call sequence is as follows:

    DrawNow(); //draws text
    iencoder->encode();

    Inside encode(), after the compression function...
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    4,704

    selection list doesn't disappear

    hi, in my app, when i select an option from the list, a function encode() is called, then the UI just halts, the poped up list doesn't disappear... The function encode() takes a fairly long time to...
  19. I used int, unsigned char, short

    Hi, thanks for your help. The most frequently used data types in the encoder are short, int and unsigned char*. In the e32def.h file, there is
    typedef unsigned int TUint;
    typedef unsigned...
  20. do i need to changethe data types?

    Hi, thanks for ur kind help! But another question is can I use the C data type such as int, float, char,, etc. instead of changing them to Symbian C++ types, TInt, etc?
    Regards,
    xiaoyu
  21. problems about data types when importing C code

    Hi, all! I need to import the MPEG encoding C code into my Symbian C++ app. Actually i'm encapsulating it into an encoder engine class. I use the C standard types, such as int, char, double, short,...
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    video streaming for Nokia 7650

    hi, all! I've downlaoded the video recorder application from Hantro. Now i just call it from inside my own application. But what i really want to do is video streaming. However, there seems few...
  23. This is my code..

    Hi, here is my code. CSnapshotConnection is inheriting CActive. When the connection is made, a call to
    notifier.connInitiated();
    will make my engine to call the ConnectL()...
  24. when to call the ConnectL(pref, stat) method of CIntConnectionInitiator?

    Hi, all! I followed the code provided in SDK to choose the IAP in program without poping up the selection dialog. But i just don't know when should i call
    initConn->ConnectL(pref, stat);
    After my...
  25. when to call the ConnectL(pref, stat) method of CIntConnectionInitiator?

    Hi, all! I followed the code provided in SDK to choose the IAP in program without poping up the selection dialog. But i just don't know when should i call
    initConn->ConnectL(pref, stat);
    After my...
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