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Re: [Discuss-gnuradio] New OpenGL-based FFT, Waterfall, and Scope displa

From: Stefan Bruens
Subject: Re: [Discuss-gnuradio] New OpenGL-based FFT, Waterfall, and Scope displays in trunk
Date: Fri, 22 Aug 2008 19:26:07 +0200
User-agent: KMail/1.10.0 (Linux/; KDE/4.1.1; x86_64; ; )

On Monday 18 August 2008 18:04:23 Johnathan Corgan wrote:
> On Mon, Aug 18, 2008 at 4:57 AM, Firas A. <address@hidden> wrote:
> > 2) I think screen refresh (drawing times) is too high (on my system) that
> > leads to flickering.
> You can lower the frame rate from the default of 30 by adding the
> following line(s) to your config.conf:
> [wxgui]
> fft_rate=15 (...or whatever frame rate you want)
> This will work with either the old or the new sinks.

Unfortunately, this is not the case - waterfallsink_gl.py uses 
DEFAULT_FRAME_RATE, which is set waterfall_window.py to the fixed value of 30.

There is another problem with the frame rate, if it is decreased often enough, 
old_framerate*0.75 will yield 0, and this leads to various problems.

Stefan Brüns  /  Bergstraße 21  /  52062 Aachen
phone: +49 241 53809034     mobile: +49 151 50412019

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