saki4510t
commented
8 years ago Hi,
- If you connect only one camera, it works well?
- If your camera supports mjpeg mode, please try it.
- if you can, please try to set different bandwidth parameter for one camera and get what value app failed to get video images. And try to set the value for two camera.
- Could you provide device descriptor of your camera?
I want to know whether your camera supports isochronous transfer and the value of dwMaxPayloadTransferSize etc. you can get it several ways,- set
LOCAL_DEBUGflag to 1 in UVCCamera.cpp and rebuild & run. then you can see it in logCat. - or call getDescriptions function after open the camera to get device descriptor as C style string(null terminated string) and write it to logCat/file
- or if you can get my apps(UsbWebCamera/UsbWebCameraPro) from GooglePlay, please run it with your camera. The apps save device descriptor to local storage.
The descriptor is saved under following pass.
{local_storage}/Android/data/com.serenegiant.usbwebcamera/fiels/Descriptor. - or if you use Linux, connect the camera to the PC and run
lsusb -s bus:dev -v(you can see bus and dev when run lsusb without option). etc.
- set
saki
oferinfinityar
Hi Saki, I'm running usbCameraTest7 on nexus 5 with Minuro webcam via OTG cable. the app runs, both camera seems to be active according to the lights on the camera but there is no preview on screen.
I saw a closed issue on this, but I still have and issue, so opening a new one.
Will appreciate your support. Thanks, Ofer
logcat (short one): 10-29 15:07:28.944: W/InputMethodManagerService(773): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@4325aa80 attribute=null, token = android.os.BinderProxy@4330dc20 10-29 15:07:28.954: I/EventHub(773): Removing device '/dev/input/event6' due to inotify event 10-29 15:07:28.954: I/EventHub(773): Removed device: path=/dev/input/event6 name=Vimicro USB2.0 PC Camera id=16 fd=93 classes=0x80000001 10-29 15:07:28.964: I/InputReader(773): Device removed: id=16, name='Vimicro USB2.0 PC Camera', sources=0x00000101 10-29 15:07:28.974: I/libUVCCamera(4667): [4726_UVCPreview.cpp:477:prepare_preview]:frameSize=(640,480)@YUYV 10-29 15:07:31.824: D/dalvikvm(1834): GC_CONCURRENT freed 1112K, 7% free 17966K/19208K, paused 3ms+3ms, total 15ms 10-29 15:07:31.904: D/dalvikvm(1834): GC_CONCURRENT freed 374K, 7% free 18016K/19208K, paused 2ms+1ms, total 12ms 10-29 15:07:32.594: D/audio_hw_primary(189): select_devices: out_snd_device(2: speaker) in_snd_device(0: ) 10-29 15:07:35.664: W/InputMethodManagerService(773): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@42c93aa8 attribute=null, token = android.os.BinderProxy@4330dc20 10-29 15:07:35.674: I/EventHub(773): Removing device '/dev/input/event7' due to inotify event 10-29 15:07:35.674: I/EventHub(773): Removed device: path=/dev/input/event7 name=Vimicro USB2.0 PC Camera id=17 fd=94 classes=0x80000001 10-29 15:07:35.694: I/InputReader(773): Device removed: id=17, name='Vimicro USB2.0 PC Camera', sources=0x00000101 10-29 15:07:35.694: I/libUVCCamera(4667): [4738_UVCPreview.cpp:477:prepare_preview]:frameSize=(640,480)@YUYV