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marcogulino / AndroidUsbCamera

Android USB Camera Driver/Bridge for GNU/Linux
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Claims video device is busy #10

Closed wise0wl closed 13 years ago

wise0wl commented 13 years ago

Steps: video loopback driver is loaded, adb has forwarded port correctly and USB webcam application is started on Android phone.

After starting the application on my Debian linux desktop I get the following error: Initializing objects... Opening connection.. Could not open video device: "Device or resource busy" ( 5 ) error on VIDIOCGCAP: Bad file descriptor error on VIDIOCGPICT: Bad file descriptor

Stack trace from GDB is below.

(gdb) r /dev/video0 Starting program: /home/wise0wl/marcogulino-AndroidUsbCamera-f4da78b/AndroidUsbCamera /dev/video0 [Thread debugging using libthread_db enabled] Initializing objects... [New Thread 0x7ffff2a83710 (LWP 20740)] Opening connection.. Could not open video device: "Device or resource busy" ( 5 ) [Thread 0x7ffff2a83710 (LWP 20740) exited] [New Thread 0x7ffff2282710 (LWP 20741)] error on VIDIOCGCAP: Bad file descriptor error on VIDIOCGPICT: Bad file descriptor

Program received signal SIGSEGV, Segmentation fault. 0x000000000040b9b5 in FramesConverter::gotFrame(Frame*) () (gdb) bt

0 0x000000000040b9b5 in FramesConverter::gotFrame(Frame*) ()

1 0x000000000040bf3f in FramesConverter::qt_metacall(QMetaObject::Call, int, void**) ()

2 0x00007ffff7ada2e6 in QMetaObject::activate(QObject, QMetaObject const, int, void**) () from /usr/lib/libQtCore.so.4

3 0x000000000040abbf in FramesCreator::frameProcessed(Frame*) ()

4 0x000000000040a9aa in FramesCreator::addFramesData(QByteArray const&) ()

5 0x000000000040adfd in FramesDataExtractor::gotFramesData(QByteArray) ()

6 0x000000000040b2d7 in SocketConnector::gotData() ()

7 0x000000000040b41a in SocketConnector::qt_metacall(QMetaObject::Call, int, void**) ()

8 0x00007ffff7ada2e6 in QMetaObject::activate(QObject, QMetaObject const, int, void**) () from /usr/lib/libQtCore.so.4

9 0x000000000040c445 in SocketInterface::readyRead() ()

10 0x000000000040c3e4 in SocketInterface::qt_metacall(QMetaObject::Call, int, void**) ()

11 0x00007ffff7ada2e6 in QMetaObject::activate(QObject, QMetaObject const, int, void**) () from /usr/lib/libQtCore.so.4

12 0x00007ffff71798ef in ?? () from /usr/lib/libQtNetwork.so.4

13 0x00007ffff7168a61 in ?? () from /usr/lib/libQtNetwork.so.4

14 0x00007ffff7ac709c in QCoreApplication::notifyInternal(QObject, QEvent) () from /usr/lib/libQtCore.so.4

15 0x00007ffff7af0a6a in ?? () from /usr/lib/libQtCore.so.4

16 0x00007ffff4e856f2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0

17 0x00007ffff4e89568 in ?? () from /lib/libglib-2.0.so.0

18 0x00007ffff4e8971c in g_main_context_iteration () from /lib/libglib-2.0.so.0

19 0x00007ffff7af06b3 in QEventDispatcherGlib::processEvents(QFlagsQEventLoop::ProcessEventsFlag) () from /usr/lib/libQtCore.so.4

20 0x00007ffff7ac59c2 in QEventLoop::processEvents(QFlagsQEventLoop::ProcessEventsFlag) () from /usr/lib/libQtCore.so.4

21 0x00007ffff7ac5d9c in QEventLoop::exec(QFlagsQEventLoop::ProcessEventsFlag) () from /usr/lib/libQtCore.so.4

22 0x00007ffff7acaa2b in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4

23 0x0000000000407385 in main ()

wise0wl commented 13 years ago

And before someone comments, I am running my Android device in debug mode.

Phone model is the Google G1 from HTC running Cyanogen Mod 6 OS.