Alex Mogurenko`s Blog

[Windows Mobile]Stilling images from Camera C# or DirectShow .NETCF part III

public class CFilterList
{
private List<IBaseFilter> Filters;
private IEnumFilters enumFilters = null;
public CFilterList()
{
Filters = new List<IBaseFilter>();
}
~CFilterList()
{
Free();
Filters = null;
}
public void Assign(IGraphBuilder fg)
{
Clear();
fg.EnumFilters(out enumFilters);
IBaseFilter Filter;
int fetched = 0;

while (enumFilters.Next(1, out Filter, out fetched) == 0)
{
Filters.Add(Filter);
}

Marshal.ReleaseComObject(enumFilters);
enumFilters = null;
}
public int Count
{
get
{
return Filters.Count;
}
}
public IBaseFilter this[int index]
{
get
{
return Filters[index];
}
}
public void Free()
{
Clear();
}
private void Clear()
{
while (Filters.Count > 0)
{
Marshal.ReleaseComObject(Filters[0]);
Filters[0] = null;
Filters.RemoveAt(0);
}

Filters.Clear();
}
}

public class CPinList
{
private List<IPin> Pins = null;
private IEnumPins enumPins = null;

public CPinList()
{
Pins = new List<IPin>();
}

~CPinList()
{
Free();
Pins = null;
}

public int Count
{
get
{
return Pins.Count;
}
}

public IPin this[int index]
{
get
{
return Pins[index];
}
}

public void Assign(IBaseFilter filter)
{
Clear();
filter.EnumPins(out enumPins);

IPin pin;
int fetched = 0;

while (enumPins.Next(1, out pin, out fetched) == 0)
{
Pins.Add(pin);
}

Marshal.ReleaseComObject(enumPins);
enumPins = null;

}

private void Clear()
{
while (Pins.Count > 0)
{
Marshal.ReleaseComObject(Pins[0]);
Pins[0] = null;
Pins.RemoveAt(0);
}
Pins.Clear();
}

public void Free()
{
Clear();
}
}

14 Responses to “[Windows Mobile]Stilling images from Camera C# or DirectShow .NETCF part III”

1. 
   1
   josh apelbaum Says:
   June 14th, 2009 at 4:53 am

   hi Alex, awesome articles/sources, thanks!

   I’m looking for away to overlay a video with text or image (becuase VMR is not available for windows mobile)
   hopefully you or anyone else around can drop me a clue about it

   thanks

2. 
   2
   Toyin Says:
   June 14th, 2009 at 10:36 am

   How can one improve on the resolution?

3. 
   3
   Toyin Says:
   June 14th, 2009 at 11:16 am

   Secondly, the paint event doesn’t fire. I’m trying to create a target area, so that I can narrow the focus on the image. I’m guessing it has something to do with the run method, holding the panel to ransom. How can one solve this problem?

4. 
   4
   James Says:
   June 14th, 2009 at 4:59 pm

   Fantastic work
   Some day you plan to do video capture and video streaming?

5. 
   5
   admin Says:
   June 14th, 2009 at 7:47 pm

   2 josh apelbaum, you need to implement transfor filter or TranceInPlace
   2 James, perhaps, dont know yet, what to do next
   2 Toyin, resolution maybe will explaine in next article, paint event aint easy but possible, have to check first

6. 
   6
   Toyin Says:
   June 14th, 2009 at 10:38 pm

   Another cool thing to have perhaps, might be the ability to zoom in and out before taking the picture.

7. 
   7
   admin Says:
   June 15th, 2009 at 4:01 pm

   digital zoom in/out you can do using IVideoWindow, thats not a problem

8. 
   8
   KenG Says:
   June 15th, 2009 at 5:02 pm

   Tested DirectShowNETCF.dll on Motorola MC55 works great. Look forward to testing future versions with ability to enumerate/set resolutions (IAMStreamConfig interface) and hopefully a better performing sample grabber filter implementation to capture still images. Also the ability to turn the camera flash on and off would be a nice feature (IAMCameraControl interface).

9. 
   9
   N Says:
   June 15th, 2009 at 5:39 pm

   Nice work.
   When video capture?
   Thanks for proyect!

10. 
    10
    eric Says:
    July 12th, 2009 at 8:14 pm

    Can i just still image without preview?

11. 
    11
    admin Says:
    July 14th, 2009 at 8:04 pm

    Yep

12. 
    12
    Gustavo Says:
    February 26th, 2010 at 9:10 pm

    Hi Alex, congratulations for your blog, its very useful.

    Im testing DirectShowNETCF to timed capture images (withou preview - its an automatic process).

    I find that when firing screen saver, its imposible capture images. You know how I can programmatically in C# prevent/disable the screen saver before capturing the images and then back on?

    Thanks.

13. 
    13
    Chetan Says:
    February 28th, 2010 at 9:55 am

    I’m confuje for that plz help me

    plz send me that code how to capture image i realy

    want that

    3days i’m trying that thing plz help me my last date is 2mmaro

    regards: chetan

14. 
    14
    admin Says:
    March 1st, 2010 at 2:56 pm

    what code? you can buy library and will have code

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