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  1. Qt Mobility
  2. QTMOBILITY-2021

QCamera - camera error after capturing image, then letting camera fall into standby, then starting camera again and capturing another image.

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Details

    • Bug
    • Resolution: Unresolved
    • Not Evaluated
    • None
    • 1.2.1
    • Multimedia
    • None
    • OS: Windows 7 64 bit
      Qt: Qt Creator 2.4.0 (based on Qt 4.7.4 32bit) (Built on Dec 16th 2011 at 03:25.42)
      Phone: Nokia N8

    Description

      Hi,

      Been running round in circles trying to perform take a camera picture, let the camera fall into standby, take another picture, repeat...

      I get the following happen:

      1) Start camera and wait for active state
      2) Lock focus
      3) Get locked focus
      4) Capture image
      5) Stop camera
      6) Wait a while, camera goes into status standby (power saving mode)
      7) Start camera
      8) Lock focus
      9) Get locked focus
      10) Capture image
      11) Get camera error

      Here is some logging to show exactly what the status of the elements are:

      [Qt Message] Starting camera
      [Qt Message] Camera status changed: LoadingStatus
      [Qt Message] Camera status changed: LoadedStatus
      [Qt Message] Camera status changed: StartingStatus
      [Qt Message] Camera status changed: ActiveStatus
      [Qt Message] Locking focus
      [Qt Message] Camera LOCK changed: status: Searching, reason UserRequest
      [Qt Message] Camera LOCK changed: status: Locked, reason LockAcquired
      [Qt Message] Taking picture
      [Qt Message] Camera LOCK changed: status: Unlocked, reason UserRequest
      [Qt Message] Image Saved:
      [Qt Message] "c:\Data\Images\test.jpg"
      [Qt Message] Shutting down camera
      [Qt Message] Camera status changed: StartingStatus
      [Qt Message] Camera status changed: LoadedStatus
      [Qt Message] Camera status changed: StandbyStatus
      [Qt Message] Starting camera
      [Qt Message] Camera status changed: LoadedStatus
      [Qt Message] Camera status changed: StartingStatus
      [Qt Message] Camera status changed: ActiveStatus
      [Qt Message] Locking focus
      [Qt Message] Camera LOCK changed: status: Searching, reason UserRequest
      [Qt Message] Camera LOCK changed: status: Locked, reason LockAcquired
      [Qt Message] Taking picture
      [Qt Message] Camera LOCK changed: status: Unlocked, reason UserRequest
      [Qt Message] Camera error: "General camera error."
      [Qt Message] Camera error: CameraError

      This is from a very simple app I put together(I am including the source), but I get the same thing if I modify the qCamera example app to perform a similar task.

      Attachments

        1. TestCamera.zip
          28 kB
          Ste Butcher

        Activity

          People

            satu.m.makela satu makela
            steuk Ste Butcher
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            Dates

              Created:
              Updated: