libgstvulkan-1.0.0.dylib missing from GStreamer plugins bad on OS X/Homebrew

Question

On OS X 12.1, with I'm building an app that is complaining about: dyld[12690]: Library not loaded: @rpath/lib/libgstvulkan-1.0.0.dylib

I've installed the following with Homebrew:

• GStreamer 1.18.5 installed form homebrew
• gst-plugins-ugly
• gst-plugins-base
• gst-plugins-bad
• gst-plugins-good

I've been able to find all the required .dylib files so far, except for libgstvulkan-1.0.0.dylib, which should be included with gst-plugins-bad but doesn't appear to be in the Homebrew install.

Questions:

1. what am I missing? why don't I have libgstvulkan-1.0.0.dylib on my system and where do I get it?
2. I'd like to know how I can avoid Homebrew and just install the packages directly but I don't see how to get the bad plugins from that side. Do I need to build from source?

Answer 1

My understanding is there is no vulcan dependency in the homebrew formula, thus when building the artifact, there is no libgstvulkan-1.0.0.dylib artifact.

I tried to include molten-vk for the build and turned on vulkan flag, but it has some issue of finding the vulkan_core.h (which is already in /opt/homebrew/Cellar/molten-vk/1.1.8/libexec/include/vulkan/vulkan_core.h).

Local build error:

==> meson --prefix=/opt/homebrew/Cellar/gst-plugins-bad/1.18.5_1 --libdir=/opt/homebrew/Cellar/gst-plugins-bad/1.18.5_1/lib --buildtype=release --wrap-mode=nofallback -Dintrosp
Last 15 lines from /Users/rui/Library/Logs/Homebrew/gst-plugins-bad/01.meson:
Program g-ir-compiler found: YES (/opt/homebrew/Cellar/gobject-introspection/1.70.0_3/bin/g-ir-compiler)
Program glib-mkenums found: YES (/opt/homebrew/opt/glib/bin/glib-mkenums)
Program glib-mkenums found: YES (/opt/homebrew/opt/glib/bin/glib-mkenums)
Program glib-mkenums found: YES (/opt/homebrew/opt/glib/bin/glib-mkenums)
Program glib-mkenums found: YES (/opt/homebrew/opt/glib/bin/glib-mkenums)
Did not find CMake 'cmake'
Found CMake: NO
Run-time dependency opencv found: NO (tried pkgconfig, framework and cmake)
Run-time dependency opencv4 found: NO (tried pkgconfig, framework and cmake)
Library MoltenVK found: YES
Has header "vulkan/vulkan_core.h" : NO

../gst-libs/gst/vulkan/meson.build:146:2: ERROR: Problem encountered: vulkan plugin enabled, but vulkan.h not found

A full log can be found at /private/tmp/gst-plugins-bad-20220227-60197-31i3hx/gst-plugins-bad-1.18.5/build/meson-logs/meson-log.txt

Feel free to kick off a PR and we can get this forward.