Software Mansion•2mo ago

SDL plugin fails to initialize

Hi. I am trying to play udp stream via SDL sink but if fails to initialize. I am on archlinux and using hyperland(wayland) which may be the cause of problem. I have attached error and pipeline.

error.txt

pipeline.ex

6 Replies

DamiradosOP•2mo ago

Full log.

error.txt

varsill•2mo ago

Hello @Damirados ! It seems that SDL_init() in the native part of the membane_sdl_plugin code fails. It indeed looks as something related to wayland - could you try setting SDL_VIDEODRIVER=wayland environmental variable and rerun your script?

DamiradosOP•2mo ago

Still the same. Is there a way I could get more verbose output from SDL side? Is there a way to use system SDL instead of precompiled one?

varsill•2mo ago

Sure, you can turn off precompiled dependency with the use of the following configuration: config :bundlex, disable_precompiled_os_deps: [:membrane_sdl_plugin] (bundlex will then look for the SDL2 with pkg-config). Concerning more verbose logging, I don't think it is currently possible without C code manipulation in the implementation of the sdl_plugin's native part

DamiradosOP•2mo ago

I got it working by disabling precompiled os deps and changing bundlex config in membrane_sdl_plugin

diff --git a/bundlex.exs b/bundlex.exs
index 8ba1c34..e09e832 100644
--- a/bundlex.exs
+++ b/bundlex.exs
@@ -16,7 +16,7 @@ defmodule Membrane.SDL.BundlexProject do
           sdl2: [
             {:precompiled, Membrane.PrecompiledDependencyProvider.get_dependency_url(:sdl2),
              "SDL2"},
-            {:pkg_config, "SDL2"}
+            {:pkg_config, "sdl2"}
           ]
         ],
         preprocessor: Unifex

diff --git a/bundlex.exs b/bundlex.exs
index 8ba1c34..e09e832 100644
--- a/bundlex.exs
+++ b/bundlex.exs
@@ -16,7 +16,7 @@ defmodule Membrane.SDL.BundlexProject do
           sdl2: [
             {:precompiled, Membrane.PrecompiledDependencyProvider.get_dependency_url(:sdl2),
              "SDL2"},
-            {:pkg_config, "SDL2"}
+            {:pkg_config, "sdl2"}
           ]
         ],
         preprocessor: Unifex

DamiradosOP•2mo ago

https://github.com/membraneframework/membrane_sdl_plugin/pull/36

GitHub

Fix pkg_config sdl2 string by Damirados · Pull Request #36 · membra...

Needed to make this change for it to compile after disabling precompiled dependency.

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SDL plugin fails to initialize