Four years later, I would like to konw if you have found a good way to show a cropped camera preview? I am struggling with this for a couple of days.
On Wednesday, May 20, 2009 10:29:07 PM UTC+3, Max Salley wrote: > > I'm working on an app that requires the user to be able to read some > text that's in the camera's preview images. The camera has plenty of > resolution for the range I'm looking at, but when it's shrunk down to > fit on the phone's display it's completely unusable. What I want to > do is just display a subset of the preview images, but display them at > the native resolution of the image, rather than the scaled down > image. I tried Camera.Parameters.setPreviewSize, but it seems to have > no effect (giving it (1, 1) is the same as giving it (1000000, > 1000000), which is the same as some rational value). I also tried > capturing the image using Camera.PreviewCallback.onPreviewFrame > andconverting it to a bitmap then using a canvas from a SurfaceView to > display a portion of the bitmap, but the SDK has no way to convert > from the camera's format to bitmap, and it seems that doing such > things in the preview callback is unworkably expensive. How should I > draw a subpicture at native resolution rather than the entire image > scaled to fit the phone's screen? > > Thanks > - Max -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
