CODEWITHSUNDEEP
androidimagecamera
Brayden
Brayden

Reputation: 519

Banding in saved image from Camera on Android

So I've implemented my own version of a camera app on Android. Everything seems to work well except I have a user with a MyTouch 4G and his images are turning out striped and messed up:

Image he gets from saving

Any ideas on what could be causing this? Has anyone seen this before?

Also: Users with other devices are having their pictures come out just fine.

Edit: I've now been able to see this happen on the device. When taking the picture about half the screen flashes green. Then the picture comes out as seen above. I've tried saving the byte[] many different ways. It seems the data I'm getting really is corrupt. I'm using the jpeg onPictureTaken callback and just saving off that byte[]. And again. I've ONLY been able to see this on a few MyTouch 4G devices. I really am at a loss here. Any help?

Upvotes: 1

Views: 761

Answers (2)

davisj4
davisj4

Reputation: 11

I was seeing a very similar issue using the HTC Thunderbolt. I saved the image data byte[] from PictureCallback.onPictureTaken() directly to the SD card. When I viewed the image on the SD card, it showed the same banding effect.

I then realized I was setting the previewSize in the camera parameters. I was using this code:

// Ensure that the camera resolution is a multiple of 8, as the screen may not be.
// TODO: A better solution would be to request the supported preview resolutions
// and pick the best match, but this parameter is not standardized in Cupcake.
Point cameraResolution = new Point();
cameraResolution.x = ( screenResolution.x >> 3 ) << 3;
cameraResolution.y = ( screenResolution.y >> 3 ) << 3;
parameters.setPreviewSize( cameraResolution.x, cameraResolution.y );

When I removed this code and did not set the preview size at all, my images were no longer banded.

Upvotes: 1

siliconeagle
siliconeagle

Reputation: 7383

i say you are copying data and you might be missing some pixels on the end of each row. maybe you have the width wrong in your calcs?

Upvotes: 1

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