lgi-devs / lgi-devs/lgi

range restriction on Gst.Bus.timed_pop_filtered doesnt work with Gst.CLOCK_TIME_NONE

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Dominant language
Lua
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Description

hello

ive tried porting the hello world example from gstreamer into lua. Gst.Bus.timed_pop_filtered is supposed to take a timeout value, or Gst.CLOCK_TIME_NONE if you dont want it to time out.

my lua version: luajit 2.1.0-beta3

local bit = require "bit"

local lgi = require "lgi"
local Gst = lgi.Gst

local pipeline = Gst.parse_launch("playbin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm")
pipeline:set_state('PLAYING')

local bus = pipeline:get_bus()

local msg = bus:timed_pop_filtered(Gst.CLOCK_TIME_NONE, bit.bor(Gst.MessageType.EOS, Gst.MessageType.ERROR))
--bad argument #2 to 'timed_pop_filtered' (-1 is out of <0, 1.844674407371e+19>)

pipeline:set_state('NULL')

changing Gst.CLOCK_TIME_NONE to Gst.SECOND * 10000 works just fine, but this of course wont work for videos longer than 10000 seconds.

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the Gst.Bus.timed_pop_filtered binding and reproduce the reported LuaJIT call with Gst.CLOCK_TIME_NONE from the issue example. Trace how the timeout value is validated or converted; done means the sentinel is accepted without the range error while finite timeout values continue to work.

Written by the indexing model from the issue text.

Assessment

Tech stack
lua
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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