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Hi,
After some hard work, I can access front camera by a DirectShow app.
But seems the camera driver of DirectShow do not support front camera.
So I can only get some broken image from front camera.
Have some idea to fix it, but I have not any TyTN II in my hand currently,
does any guy like help to try it?
Allow me to tell it from the beginning.
======Background=============
There are two compoments to make camera able to use in DirectShow.
One is the capture filter, other one is the camera driver.
Camera driver of DirectShow will export two stream devices, one is CAM,
other one is PIN. CAM is used for control the camera hardware, PIN is used for
receive image data stream. The capture filter will use the camera driver to
control camera and receive image data.
But in HTC devices, the camera driver of DirectShow does not access
hardware directly. There are other camera driver, the HTC camera driver.
This driver access the camera hardware directly, and export a set of
private API. The CameraApp (like HTC CamApp and the CoolCamera) use
the private HTC camera API to control camera hardware. The DirectShow
camera driver of HTC device also invokes the private HTC camera API to
access camera.
=======Problems in TyTN II=======
In DirectShow, we can use the MSFT API FindNextDevice to access the
second camera device. But in TyTN II, HTC does not provide
a DirectShow driver for front camera. You can only find one camera device
in DirectShow.
After some hack, like capture the log output of camera driver, de-asm the
camera driver, I got a way to access the front camera by changing registry
item. But because the DirectShow camera driver only support the back camera, the
driver process the image data from front camera by using the image format
of back camera, after all, the image from front camera was broken.
=======How===================
If you want to access the front camera in DirectShow, before you create
capture filter, change the registry item below, it will change to 1 automaticly
by HTC camera driver after the capture filter closed.
Key: HKEY_LOCAL_MACHINE \Software\HTC\Camera\ActiveCameraID
Value: 2
=======More Info===============
The DirectShow camera driver of TyTN II is NULLCAM.dll.
The HTC camera driver of TyTN II is HTCCamera1.dll.
=======ToDo==================
From the log output of HTC camera driver. I find that the front camera senser
is OV7670. It is a 30M pixel camera senser.
Some old HTC device have 30M pixel camera, like Hurricane. Seems it use a
OV7xxx device too. Could I copy it into TyTN II, and install it as the front
camera driver of DirectShow, then I can access it in DirectShow?
Mine has no: HKEY_LOCAL_MACHINE \Software\HTC\Camera\ActiveCameraID
It should be: HKEY_LOCAL_MACHINE \Software\HTC\Camera\Common\ActiveCameraID
Cheers
I believe HTC use a proprietary DLL for accessing the front camera, as the Windows ones can't access it properly
You may create the item:
HKEY_LOCAL_MACHINE \Software\HTC\Camera\ActiveCameraID
The HKEY_LOCAL_MACHINE \Software\HTC\Camera\Common\ActiveCameraID has not effect for switching camera.
FloatingFatMan said:
I believe HTC use a proprietary DLL for accessing the front camera, as the Windows ones can't access it properly
Click to expand...
Click to collapse
Does the Windows ones means the DirectShow camera driver?
DirectShow camera driver is developed by HTC too, but HTC does not provide a front camera driver for DirectShow.
Anyone?
DirectShow use of the camera for me results in extremelly poor quality pictures and video. The images are sized 160x120, terrible quality and the frame rate for video capture and preview seems to be about 1 frame every 10 seconds. Is there anything I can do to improve the quality or do I have to go the route of reverse-engineering HTCCamera1.dll?
Jim
Anyone had any luck
Just wondering if anyone has had any luck here.
Changing the reg setting given in the thread I get access to the camera but the picture is all scrambled.
I would be happy with even a (super) low resolution poor quality image myself.
Maybe someone has a combination of reg settings meant for the front camera that at least give something recognizable from the back one when using DirectShow?
tell me please how i can lunch front camera directly from .lnk?
Secundary camera problem
Hey guys! I have a HTC touch dual and when I make a video call I can only see the other person, mine screen is black. Is there some sort of applicaton that can test components? I could use someting like testing program so a link would be nice
Thanks!
problem with camera
hello guys..i got a prolbem with my camera and i think after i flash with shifu roms..my phone is [email protected] [email protected] icant access my front camera anymore..before i can open and changing the front camera by click at the icon on the screen between storage card icon and the self timer icon..but now the icon seem disappear and leave a blank spot at the changing mode camera..can someone help me?
Do you have any tips for best camera settings of HTC KAISER?
What do you thing about this thread, do you anybody know, how to set camera for best quality photos?
Best regards, speedy
I'm beginning to think that photos WITHOUT the htc camera patch are better...
maybe yes..maybe no
I thing that camera on standart setings is not good.
is there a way? I tried searching but did not come up with the info i was looking for.
Bäcker said:
is there a way? I tried searching but did not come up with the info i was looking for.
Click to expand...
Click to collapse
Open up the camera and switch trouch the options, you'll find it
video recording, not photo
as far as i know it is somehow software limited to 320x240
OK, and at least is there any way to switch off thing which is slowering the camera? I think it is automatic white balance. My brother´s Asus P535 has the sport option, which disable autobalance and the camera is smoothly, no slowdown, but I am not sure if this is autobalace wchich cause slowdown, anyway I am sure you know what I am talking about.
pokevitek said:
OK, and at least is there any way to switch off thing which is slowering the camera? I think it is automatic white balance. My brother´s Asus P535 has the sport option, which disable autobalance and the camera is smoothly, no slowdown, but I am not sure if this is autobalace wchich cause slowdown, anyway I am sure you know what I am talking about.
Click to expand...
Click to collapse
you mean recording video not smooth in a little dark area or in a night ?
if that so same problem in my old touch dual dont know how to fix this
I dont think this is a problem, just there is missing the mod withount white balance, like P535 has. P535 has the same problem, but like I said, there is a sport mod, which is really fast.
Aqrab said:
you mean recording video not smooth in a little dark area or in a night ?
if that so same problem in my old touch dual dont know how to fix this
Click to expand...
Click to collapse
pokevitek said:
I dont think this is a problem, just there is missing the mod withount white balance, like P535 has. P535 has the same problem, but like I said, there is a sport mod, which is really fast.
Click to expand...
Click to collapse
i posts a lot about this ! but
i really dont like the recording in a dark craaaap
its like recording 5 frames per second or even lower
most if people record video in the night in a party or somthing , but what the point of video recorder if you cant record smoothly !!?!!
the p3600 record perfectly in a dark CIF size , mp4 , 12 to 13 frames per second
Like I said, it isnt bug literally. There just missing mod which disables image-enhancer software which is slowering device.
pokevitek said:
Like I said, it isnt bug literally. There just missing mod which disables image-enhancer software which is slowering device.
Click to expand...
Click to collapse
found this in Diamond Tweaks thread
To Enable 'Sport mode': HKEY_LOCAL_MACHINE\SOFTWARE\HTC\Camera\P8 -> change the value "enabled" from 0 to 1
To Enable 'Burst mode': HKEY_LOCAL_MACHINE\SOFTWARE\HTC\Camera\P6 -> change the value "enabled" from 0 to 1
To Enable 'Video Share': HKEY_LOCAL_MACHINE\SOFTWARE\HTC\Camera\P9 -> change the value "enabled" from 0 to 1
what about the audio quality?
teh recorded sound is 8 khz and sounds poor.
i found some registry keys about the sample rate, but
has anyone changed the values with success?
i want chrystal clrear tone, like some voice memo apps.
found this
Go into registry
HKLM/Software/HTC/Camera/Captparam/
and set
CapKeyDelayTime = 15 (old=1500)
CaptureTimer = 50 (old=5000)
it make the camera take picture in no time so you dont need to worry about moving your hand in dark area
Aqrab said:
found this
Go into registry
HKLM/Software/HTC/Camera/Captparam/
and set
CapKeyDelayTime = 15 (old=1500)
CaptureTimer = 50 (old=5000)
it make the camera take picture in no time so you dont need to worry about moving your hand in dark area
Click to expand...
Click to collapse
Thank you very much for these tweak. I seldom get blurry pictures now even in low light condition.
Hey guys,
I am using a rooted droid bionic with only programs on the approved list frozen.
When in the stock camera app, it now defaults to landscape mode, and will not change as I rotate the camera. It causes pictures to now appear as if I was intending to take them with the camera sideways, so I have to rotate them often to make them correct.
Rebooting doesn't fix the issue, and the problem seems to now persist when in skype (sending me turned on the side with front camera), and potentially google talk (I haven't tested yet). I would think it was related to frozen applications, but it just started happening a week ago.
Any tips or ideas to help would be great, let me know if you need anything more from me.
Thanks,
Cobalt
Play around with your resolution settings. I had a similar issue with the camcorder and found that unless I use 720 or 1080 resolution it always messes with the orientation. The Camera also has an option to use HD (6MP to fit the screen). I find using that is better then setting it to 8MP which messes around with orientation at times.
AceNJ said:
Play around with your resolution settings. I had a similar issue with the camcorder and found that unless I use 720 or 1080 resolution it always messes with the orientation. The Camera also has an option to use HD (6MP to fit the screen). I find using that is better then setting it to 8MP which messes around with orientation at times.
Click to expand...
Click to collapse
Tried. Didn't seem to affect anything. Both changing the picture resolution and the camcorder record setting, nothing happened.
On the other hand, I tried the fastboot and FXZ recovery method, and it seems to have worked, to some extent? It now correctly registers the orientation change when saving the pictures, but still does not rotate the icons when using the camera app. As an added bonus, it left all my accounts/programs intact, and just flashed the system files.
Technically fixed, I guess?
After the update to version 4.4.3, the system does not allow changing the ISO in pictures and videos. Maybe it's a problem related to the update, a bug. I tried with several apps (A Better Camera, Camera FV-5, ProCapture). There is no change in image quality, which was before the change the ISO through these apps. Is there any solution to this bug? Someone also has the same problem?
agasin said:
After the update to version 4.4.3, the system does not allow changing the ISO in pictures and videos. Maybe it's a problem related to the update, a bug. I tried with several apps (A Better Camera, Camera FV-5, ProCapture). There is no change in image quality, which was before the change the ISO through these apps. Is there any solution to this bug? Someone also has the same problem?
Click to expand...
Click to collapse
I also have this problem
and other users also have, but they thought they could not use manual ISO
how to control ISO work again?