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BatchDrake / suscan

Channel scanner based on sigutils library
GNU General Public License v3.0
124 stars 29 forks source link

Is a waterfall expected ? #15

Closed chris4git closed 1 year ago

chris4git commented 6 years ago

Hi, I try to run SUScan with a rtl-sdr stick as default source (@300000 sps). When I click on the start button a spectrum line is run, a lot of CPU is used by Xorg but nothing moves anymore on the screen except, sometimes, some red lines/rectangles (see attached screenshot). No waterfall and the window seems stuck :-( The netbook used is not very powerful (AMD C-70) but it runs gqrx with a spectrum display, a waterfall and its demodulators just fine :-/

Any hints ?

chris4git commented 6 years ago

screenshot lost, retrying :

suscan

BatchDrake commented 6 years ago

This is a well known GTK 3/Cairo issue that I'm struggling to solve, and I got no luck so far. I have two options here: I either do all the scaling and drawing by myself directly in C, or I give up on GTK 3 and use QT instead. And the first option does not look attractive at all.

For now, I would not use Suscan above the 2Msps (lame, I know). My next task will be to fix this annoying problem once for all.

El mar., 4 sept. 2018 22:10, chris4git notifications@github.com escribió:

Hi, I try to run SUScan with a rtl-sdr stick as default source (@300000 https://github.com/300000 sps). When I click on the start button a spectrum line is run, a lot of CPU is used by Xorg but nothing moves anymore on the screen except, sometimes, some red lines/rectangles (see attached screenshot). No waterfall and the window seems stuck :-( The netbook used is not very powerful (AMD C-70) but it runs gqrx with a spectrum display, a waterfall and its demodulators just fine :-/

Any hints ?

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chris4git commented 6 years ago

thanks for your quick reply. In this case I use it at only 0.3Msps ! ...gqrx use qt5...

BatchDrake commented 5 years ago

I finally did what you said. I ended up giving up on the GTK interface and started from scratch with Qt5. 6 Msps and realtime demodulation with audio playback. What do you think?

BatchDrake commented 1 year ago

I am closing this issue as Suscan does not have an UI anymore. Try SigDigger instead, it beats what Suscan used to be.