audioplayer TimerFcn behavior when busy

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Guillaume 2023-2-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1917615-audioplayer-timerfcn-behavior-when-busy

评论： Mario Malic 2023-3-15

采纳的回答： Guillaume

Hello there. Does an audioplayer object have an option to cancel calls of TimerFcn when system busy ?

(Like "BusyAction" for graphic objects or "BusyMode" for timer objects)

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Jan 2023-2-24

@Guillaume: Which behaviour do you want to achieve?

Mario Malic 2023-2-24

编辑：Mario Malic 2023-2-24

在 MATLAB Online 中打开

One thing that may be possible, however I am not sure how it would affect the performance of the compiled app. When you use plot, you add line objects, instead you could alter the XData and the YData of the first plotted line object. Example is below

function PlotDataAvailable(src, event)
    [data, timestamps, ~] = read(src, src.ScansAvailableFcnCount, "OutputFormat", "Matrix");
    persistent init fig ax hPlot;
    if isempty(init)
        init = true;
        fig = figure();
        ax = axes(fig);
    end
    if isempty(hPlot)
        hPlot = plot(ax, timestamps, data);     
    else
        hold(ax, "on");
        set(hPlot, "XData", [hPlot.XData, timestamps'], "YData", [hPlot.YData, data'])
    end
end

Otherwise, you should find a way to debug the compiled application, and figure out why does it happen.

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Guillaume 2023-3-15

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1917615-audioplayer-timerfcn-behavior-when-busy#answer_1193405

Thank you gentlemen for your suggestions. It helped a bit but the main problem is how the application goes slow once compiled.

Therefore I'm closing this topic which is in the end not addressing the main issue. I might open a new one to find guidelines to spot what makes a compiled app slow.

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Guillaume 2023-3-15

Do you have some guidelines or reference document to log such data from a compiled app ?

Mario Malic 2023-3-15

Use diary to save the output of the command windows to a file. Output the needed data to the command window.

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