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Bug 4920

Summary: Wider support for seconds of battery life left on Linux platforms using sys interface
Product: SDL Reporter: Murad <muradkarammaev>
Component: *don't know*Assignee: Ryan C. Gordon <icculus>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: enhancement    
Priority: P2    
Version: 2.0.10   
Hardware: All   
OS: Linux   
Attachments: wider support for battery lifetime data on Linux platforms using sys interface

Description Murad 2019-12-27 11:57:35 UTC 
Created attachment 4140 [details]
wider support for battery lifetime data on Linux platforms using sys interface

On my system, SDL_GetPowerInfo() returns -1 seconds of battery life left. I have quickly investigated that in my case SDL uses sys interface to get battery data. It tries to read "time_to_empty_now" file which is not always present. However, it is still possible to calculate remaining lifetime using "energy_now" and "power_now" files. This is what my simple patch (included as attachment) tries to accomplish.
Best wishes.
Comment 1 Murad 2019-12-27 12:05:25 UTC 
This is my first contribution to any oss project ever, so, please, point me kindly at any mistake I have made. Thanks!
Comment 2 Sam Lantinga 2019-12-30 21:22:08 UTC 
Patch added, thanks!
https://hg.libsdl.org/SDL/rev/8a12cc1abc9e