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Details

Type: Bug
Resolution: Fixed
Priority: P1: Critical
Fix Version/s: 6.7.0 FF
Affects Version/s: 6.4.3, 6.5.0
Component/s: Multimedia
Labels:
None
Environment:
Tested on Samsung Galaxy Tab S5e with arm64-v8a & armeabi-v7a.

Platform/s:

Android
Commits:
7d53ccf26 (dev)
Sprint:
2023wk30FOQtforAndroid, 2023wk32FOQtforAndroid, 2023wk36FOQtforAndroid

Description

By using in qml a CaptureSession, every time we change the Camera active property, whether by start/stop methods or by changing directly the property, the memory usage is not totally freed. This causes a crash after a certain number of iterations.

It seems to come from the VideoOutput. When no VideoOutput is bound to the CaptureSession, the memory remains stable.

Here is a qml code to test it out:

import QtQuick
import QtQuick.Controls
import QtQuick.Window
import QtMultimedia
Window {
    width: 640
    height: 480
    visible: true
    property int timerEntry: 0
    CaptureSession
    {
        id: captureSessionId
        camera: Camera
        {
            id: cameraId
            onErrorOccurred: function(error, message) {
                console.log("Error occurred", error, message);
            }
        }
        videoOutput: videoOutputId // Commenting this line stabilise the memory usage

    }
    VideoOutput {
        id: videoOutputId
        anchors.fill: parent
        Button
        {
            id: startButtonId
            anchors.bottom: parent.bottom
            anchors.horizontalCenter: parent.horizontalCenter
            width: 50
            height: width
            onPressed:
            {
                cameraId.start()
                timerId.start()
            }
        }
    }
    Timer
    {
        id: timerId
        repeat: true
        interval: 2000
        onTriggered:
        {
            timerEntry += 1
            console.log("Timer Entry", timerEntry)
            if(cameraId.active)
            {
                console.log("Stopping camera")
                cameraId.stop()
            }
            else
            {
                console.log("Starting camera")
                cameraId.start()
            }
            console.log("Timer Exit")
        }
    }
}