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I used USB webcam(s) (Logicool QVX-13NS) with customized Galaxy Nexus (android 4.0.3). Only low-power webcams seem to work fine. The launch of application fails unless the application is launched in an appropriate timing after the insertion of the USB cable. I enabled the following kernel configuration, CONFIG_VIDEO_DEV=y CONFIG_VIDEO_V4L2_COMMON=y CONFIG_VIDEO_MEDIA=y CONFIG_USB_VIDEO_CLASS=y CONFIG_V4L_USB_DRIVERS=y CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y in tuna_defconfig, and I commented out the following line in drivers/media/video/Kconfig. # source "drivers/media/video/omapgfx/Kconfig" Then I gave a permission 666 to /dev/video0,1 in ueventd.tuna.rc. Finally, I wrote some applications that access /dev/video0,1 through JNI. Kanamaru Lab. in Kogakuin Univ. brain.cc.kogakuin.ac.jp Source for 1 camera bitbucket.org Source for 2 cameras bitbucket.org USB Webカメラ (Logicool QVX-13NS) をカスタムしたGalaxy Nexus (android 4.0.3) で動作させたデモ。ローパワーカメラしか動きませんでした。また、ケーブルを挿した後、適切なタイミングでアプリを起動しないと起動に失敗します（原因不明）。 kernel のconfig であるtuna_defconfigで下記を有効にし、 CONFIG_VIDEO_DEV=y CONFIG_VIDEO_V4L2_COMMON=y CONFIG_VIDEO_MEDIA=y CONFIG_USB_VIDEO_CLASS=y CONFIG_V4L_USB_DRIVERS=y CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y kernelのdrivers/media/video/Kconfigにて、以下の行をコメントアウトし、 # source "drivers/media/video/omapgfx/Kconfig" さらに、ueventd.tuna.rcで /dev/video0,1 に 666 パーミッションを与えます。 最後に ...