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/system/lib/hw/camera.omap3.so MemoryHeapBase with setPreviewCallback*

Jean-Michel Foucher
Prodigy 20 points

Hello,

Here is the environment

Project : rowboat-ics-sgx (http://code.google.com/p/rowboat/wiki/ICSonBeagleboard_WithSGX)

Hardware project : hardware-ti-omap3 commit 386b90d

Board : beableboard-xM

Camera : vga camera (mt9v113)

issue : when calling setPreviewCallback or setPreviewCallbackWithBuffer in a java application i get the following error

F/libc    ( 3844): Fatal signal 11 (SIGSEGV) at 0x414e7000 (code=1)
I/DEBUG   ( 1024): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I/DEBUG   ( 1024): Build fingerprint: 'Android/beagleboard/beagleboard:4.0.3/IML74K/eng.beagle.20120730.134854:eng/test-keys'
I/DEBUG   ( 1024): pid: 3844, tid: 3899  >>> /system/bin/mediaserver <<<
I/DEBUG   ( 1024): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 414e7000
I/DEBUG   ( 1024):  r0 0000adb7  r1 0000a817  r2 0000002d  r3 414e7000
I/DEBUG   ( 1024):  r4 41e46000  r5 00071000  r6 414e7000  r7 00096000
I/DEBUG   ( 1024):  r8 00000082  r9 40045318  10 0000007d  fp 41dd5000
I/DEBUG   ( 1024):  ip 000000b6  sp 4233ae20  lr 40043f47  pc 40043eba  cpsr 20000030
I/DEBUG   ( 1024):  d0  c008000000000000  d1  4065f4395810624d
I/DEBUG   ( 1024):  d2  0000001000000002  d3  3ff989374bc6a7f0
I/DEBUG   ( 1024):  d4  4063600000000000  d5  0000000000000000
I/DEBUG   ( 1024):  d6  000000af00000001  d7  000000b8000000b6
I/DEBUG   ( 1024):  d8  0000000000000000  d9  0000000000000000
I/DEBUG   ( 1024):  d10 0000000000000000  d11 0000000000000000
I/DEBUG   ( 1024):  d12 0000000000000000  d13 0000000000000000
I/DEBUG   ( 1024):  d14 0000000000000000  d15 0000000000000000
I/DEBUG   ( 1024):  d16 40670e978d4fdf3b  d17 400024dd2f1a9fbe
I/DEBUG   ( 1024):  d18 4000000000000000  d19 bfd90624dd2f1aa0
I/DEBUG   ( 1024):  d20 4066db7ced916872  d21 bebbac583349cd18
I/DEBUG   ( 1024):  d22 3ff0000000000000  d23 3fe7819101615a87
I/DEBUG   ( 1024):  d24 3e66376972bea4d0  d25 0000000000000000
I/DEBUG   ( 1024):  d26 0000000000000000  d27 0000000000000000
I/DEBUG   ( 1024):  d28 0000000000000000  d29 0000000000000000
I/DEBUG   ( 1024):  d30 0000000000000000  d31 0000000000000000
I/DEBUG   ( 1024):  scr 80000010
I/DEBUG   ( 1024):
I/DEBUG   ( 1024):          #00  pc 00006eba  /system/lib/hw/camera.omap3.so
I/DEBUG   ( 1024):          #01  pc 00006f42  /system/lib/hw/camera.omap3.so (_Z19convertYUYVtoRGB565PhS_ii)
I/DEBUG   ( 1024):          #02  pc 000062da  /system/lib/hw/camera.omap3.so (_ZN7android14CameraHardware13previewThreadEv)
I/DEBUG   ( 1024):          #03  pc 00006330  /system/lib/hw/camera.omap3.so
I/DEBUG   ( 1024):          #04  pc 00021196  /system/lib/libutils.so (_ZN7android6Thread11_threadLoopEPv)
I/DEBUG   ( 1024):          #05  pc 000217dc  /system/lib/libutils.so
I/DEBUG   ( 1024):          #06  pc 00012be4  /system/lib/libc.so (__thread_entry)
I/DEBUG   ( 1024):          #07  pc 00012738  /system/lib/libc.so (pthread_create)
I/DEBUG   ( 1024):
I/DEBUG   ( 1024): code around pc:
I/DEBUG   ( 1024): 40043e98 10c070e1 2a90ee17 bfa82aff ea2222ff  .p.....*.*..."".
I/DEBUG   ( 1024): 40043ea8 10ca71e2 21c0ea42 70ecea2c ea411082  .q..B..!,..p..A.
I/DEBUG   ( 1024): 40043eb8 70181042 2207f3c0 4770705a 8000f3af  B..p..."ZppG....
I/DEBUG   ( 1024): 40043ec8 76c8b439 3ff29fbe 9374bc6a bfea0418  9..v...?j.t.....
I/DEBUG   ( 1024): 40043ed8 4bc6a7f0 3ff98937 dd2f1aa0 bfd90624  ...K7..?../.$...
I/DEBUG   ( 1024):
I/DEBUG   ( 1024): code around lr:
I/DEBUG   ( 1024): 40043f24 78e34293 46d4bfdf 469a4640 bfc44688  .B.x...F@F.F.F..
I/DEBUG   ( 1024): 40043f34 4608469c 46414633 f8cd4652 f7ffc000  .F.F3FAFRF......
I/DEBUG   ( 1024): 40043f44 f8ddff6d 1cb3c000 46604641 f7ff4652  m.......AF`FRF..
I/DEBUG   ( 1024): 40043f54 3504ff65 34043604 dbd742bd 8ffee8bd  e..5.6.4.B......
I/DEBUG   ( 1024): 40043f64 00020624 ffffffa8 0000140e 2a2a2a2a  $...........****
I/DEBUG   ( 1024):
I/DEBUG   ( 1024): memory map around addr 414e7000:
I/DEBUG   ( 1024): 41476000-414e7000 /dev/ashmem/MemoryHeapBase (deleted)
I/DEBUG   ( 1024): (no map for address)
I/DEBUG   ( 1024): 414f9000-415f9000 /dev/ashmem/AudioFlinger::Client (deleted)
I/DEBUG   ( 1024):
I/DEBUG   ( 1024): stack:
I/DEBUG   ( 1024):     4233ade0  4233ae04
I/DEBUG   ( 1024):     4233ade4  4015107f  /system/lib/libutils.so
I/DEBUG   ( 1024):     4233ade8  4233ae04
I/DEBUG   ( 1024):     4233adec  00000000
I/DEBUG   ( 1024):     4233adf0  0002efd8  [heap]   
I/DEBUG   ( 1024):     4233adf4  40010a47  /system/lib/libcameraservice.so
I/DEBUG   ( 1024):     4233adf8  0002e8a8  [heap]   
I/DEBUG   ( 1024):     4233adfc  4001234b  /system/lib/libcameraservice.so
I/DEBUG   ( 1024):     4233ae00  0002e8a8  [heap]   
I/DEBUG   ( 1024):     4233ae04  0002efb8  [heap]   
I/DEBUG   ( 1024):     4233ae08  0002e8d8  [heap]   
I/DEBUG   ( 1024):     4233ae0c  0002e8b8  [heap]   
I/DEBUG   ( 1024):     4233ae10  0002e8d8  [heap]   
I/DEBUG   ( 1024):     4233ae14  0002e8b8  [heap]   
I/DEBUG   ( 1024):     4233ae18  df0027ad
I/DEBUG   ( 1024):     4233ae1c  00000000
I/DEBUG   ( 1024): #01 4233ae20  000000ac
I/DEBUG   ( 1024):     4233ae24  ffffffa8
I/DEBUG   ( 1024):     4233ae28  00000280
I/DEBUG   ( 1024):     4233ae2c  000199d0  [heap]   
I/DEBUG   ( 1024):     4233ae30  0002e8c0  [heap]   
I/DEBUG   ( 1024):     4233ae34  41dd5000  /dev/video2
I/DEBUG   ( 1024):     4233ae38  00000000
I/DEBUG   ( 1024):     4233ae3c  000199dc  [heap]   
I/DEBUG   ( 1024):     4233ae40  0004b000
I/DEBUG   ( 1024):     4233ae44  000001e0
I/DEBUG   ( 1024):     4233ae48  00000001
I/DEBUG   ( 1024):     4233ae4c  400432df  /system/lib/hw/camera.omap3.so
I/BootReceiver( 1122): Copying /data/tombstones/tombstone_07 to DropBox (SYSTEM_TOMBSTONE)
W/AudioSystem( 1122): AudioFlinger server died!
W/AudioSystem( 1122): AudioPolicyService server died!
I/ServiceManager( 1021): service 'media.audio_flinger' died
I/ServiceManager( 1021): service 'media.player' died
I/ServiceManager( 1021): service 'media.camera' died
I/ServiceManager( 1021): service 'media.audio_policy' died
W/Camera  ( 3878): Camera server died!
W/Camera  ( 3878): ICamera died
E/Camera  ( 3878): Error 100
E/CameraErrorCallback( 3878): Got camera error callback. error=100
D/AndroidRuntime( 3878): Shutting down VM

There is no such error when setPreviewCallback* is commented out.

Is this a known bug? is this related to hardware-ti-omap3 or does it look like i did something wrong with java?

Best regards,

Jean-Michel


  • 0
    Prodigy 20 points

    As far as i checked, it looks like it's a format conversion problem.

    i tried to change the preview format on the java side with the following line :

    params.setPreviewFormat(android.graphics.ImageFormat.YV12)

    but it is not supported (this is specified in hardware/ti/omap3/camera/CameraHardware.cpp in setParameters method).

    After checking this :

    https://groups.google.com/forum/#!msg/android-opencv/YHUHHvJv-3o/p3ltYW49V4wJ

    i realized framesize in hardware/ti/omap3/camera/CameraHardware.cpp's previewThread method was not correct.

    i added the following lines :

    diff --git a/camera/CameraHardware.cpp b/camera/CameraHardware.cpp
    index 92eb55b..60c743d 100644
    --- a/camera/CameraHardware.cpp
    +++ b/camera/CameraHardware.cpp
    @@ -348,6 +348,11 @@ int CameraHardware::previewThread()
                     if ((mMsgEnabled & CAMERA_MSG_PREVIEW_FRAME) ||
                         (mMsgEnabled & CAMERA_MSG_VIDEO_FRAME)) {

    +                    if (strcmp(mParameters.getPreviewFormat(), (const char *) CameraParameters::PIXEL_FORMAT_YUV422SP) == 0)
    +                    {
    +                        framesize = 2* width * height; // yuv422sp
    +                    }
    +
                         camera_memory_t* picture = mRequestMemory(-1, framesize, 1, NULL);
                         convertYUYVtoRGB565((unsigned char *)tempbuf, (unsigned char*)picture->data, width, height);

    The error disappeared, now setPreviewCallback* works but i am no expert with image formats and this hack is probably not good enough.

    With this modification i have been able to run OpenCv 2.4.2 tutorial 1 sample, though it looks like my modification messed up with resolution and colors.

    Should i post this in omap forum instead of android?

    Regards,

    Jean-Michel

  • 0 in reply to Jean-Michel Foucher
    Prodigy 10 points

    Hi,

    I was getting the exact same problem with a usb camera C920 that i'm trying to connect to the beaglebone. I applied your patch and now the startPreview function brings up the first image but the auto recuperation of images is not working. Does anybody have an idea about this ?

    Regards,