- Camera through wallpaper based on Live wallpaper.
- Double tap to take a picture. Saved in /sdcard/CTW folder.
- Switch between front and back cameras.
- User can change camera resolution.
- Enable/Disable shutter sound (Low resolution only)
- Color effect, White balance, Flash mode, Focus mode.
- Pinch zoom. Zoom in/out by two finger touch.
- QR code recognition. Single tap to start recognition.
- Launch browser with URL recognized from QR code.
- Map/Dial/Email/SMS also supported.
- Tested on Galaxy Nexus (4.0) and Xperia Arc (2.3).

[Instruction]
1. Press menu button when you are in your Home application.
2. Select Wallpaper -> Live wallpapers -> Camera Through.

[Open source]
https://github.com/yaji/camera-through-wallpaper