Auto merge of #23929 - asajeffrey:magicleap-gstreamer, r=jdm

Added gstreamer support to the magicleap port

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With this PR we can watch videos in magicleap servo.

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because I'm not sure how we'd test it

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1 files changed, 9 insertions, 0 deletions

diff --git a/support/magicleap/Servo2D/code/src/Servo2D.cpp b/support/magicleap/Servo2D/code/src/Servo2D.cpp
index 2ba1d3a17cb..768abbcae21 100644
--- a/support/magicleap/Servo2D/code/src/Servo2D.cpp
+++ b/support/magicleap/Servo2D/code/src/Servo2D.cpp
@@ -173,6 +173,15 @@ int Servo2D::init() {
   EGLSurface surf = plane_->getEGLSurface();
   EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 
+  // Set up gstreamer
+  auto tmpdir = getTempPath();
+  auto bindir = getPackagePath() + "bin";
+  auto registry = getWritablePath() + "gstreamer-registry.bin";
+  setenv("GIO_MODULE_DIR", bindir.c_str(), 1);
+  setenv("GST_PLUGIN_SYSTEM_PATH", bindir.c_str(), 1);
+  setenv("GST_REGISTRY", registry.c_str(), 1);
+  setenv("XDG_CACHE_HOME", tmpdir.c_str(), 1);
+
   // Hook into servo
   servo_ = init_servo(ctx, surf, dpy, true,
                       this, logger, history, url, keyboard, uri_, args_,