got it compiling and fixed errors

Signed-off-by: Nickiel12 <nickiel@nickiel.net>

flake.nix

@@ -21,6 +21,7 @@
 	];
         buildInputs = with pkgs; [
           zig_exe
+          pkg-config
           glib
           glib.dev
           gst_all_1.gstreamer

src/main.zig

@@ -25,24 +25,20 @@ pub fn main() !void {
     // This allows me to utilize the same command line args and gstreamer
     gst.init(@ptrCast(&std.os.argv.len), @ptrCast(&std.os.argv.ptr));
 
-    const source: ?*gst.Element = gst.ElementFactory.make("videotestsrc", "source");
+    const source: *gst.Element = gst.ElementFactory.make("videotestsrc", "source") orelse unreachable;
-    const sink: ?*gst.Element = gst.ElementFactory.make("autovideosink", "sink");
+    const sink: *gst.Element = gst.ElementFactory.make("autovideosink", "sink") orelse unreachable;
 
-    const pipeline: ?*gst.Element = gst.Pipeline.new("test-pipeline");
+    const pipeline: *gst.Pipeline = gst.Pipeline.new("test-pipeline");
-
-    if (source == null or sink == null or pipeline == null) {
-        std.debug.panic("Not all elements could be created!", .{});
-    }
 
     // When you look into the GST_BIN macro that zig can't compile,
     // it really is just this pointer cast with extra steps of verification
-    const bin: *gst.Bin = pipeline.Parent;
+    const bin: *gst.Bin = &pipeline.f_bin;
 
 
     // Gstreamer gives a critical warning when using gst.gst_bin_add_many, but doesn't
     // when calling each individually
-    _ = gst.Bin.add(*bin, source);
+    _ = gst.Bin.add(bin, source);
-    _ = gst.Bin.add(*bin, sink);
+    _ = gst.Bin.add(bin, sink);
 
     // the failure return code is -1 I believe
     if (gst.Element.link(source, sink) < 0) {
@@ -51,38 +47,50 @@ pub fn main() !void {
     }
 
     // g_int is just i32. You can 
-    source.set("pattern", @as(i16, 0));
+    // source.set("pattern", @as(i16, 0));
+    gobject.Object.set(source.as(gobject.Object), "pattern", @as(i16, 0));
 
-    const ret = pipeline.setState(gst.State.playing);
+    const ret = pipeline.as(gst.Element).setState(gst.State.playing);
     if (ret == gst.StateChangeReturn.failure) {
         pipeline.unref();
         std.debug.panic("Could not start pipeline", .{});
     }
 
     const bus: *gst.Bus = pipeline.getBus();
-    const msg: *gst.Message = bus.popFiltered( gst.MessageType.flags_eos + gst.MessageType.flags_warning );
+    // const msg: *gst.Message = bus.popFiltered( gst.MessageType.flags_eos + gst.MessageType.flags_warning );
+    const message_type: gst.MessageType = .{ .eos = true, .warning = true };
+    const ret_msg: ?*gst.Message = bus.popFiltered(message_type);
 
-    if (msg.f_type == 1) {
+    std.debug.print("reg_msg returned!\n", .{});
-        const err: glib.Error = null;
-        var debug_info: [*][*:0]u8 = null;
 
-        switch (msg.f_type) {
+    if (ret_msg) |msg| {
-            1 => {
+        if (msg.f_type.eos == true) {
-                msg.parseError(err, &debug_info);
+            std.debug.print("EOS recieved\n", .{});
-                std.debug.print("Error received from element {s}: {s}", .{ gst.GST_OBJECT_NAME(msg.src), err.*.*.message });
+        } else if (msg.f_type.warning == true) {
+            std.debug.print("Warning message received\n", .{});
+            const err: ?**glib.Error = null;
+            const debug_info: ?*[*:0]u8 = null;
+
+            msg.parseError(err, debug_info);
+            if (err) |e| {
+                std.debug.print("Error received from element {s}: {s}", .{ msg.f_src, e.*.*.message });
+            }
             if (debug_info != null) { // I couldn't figure out how to do a orelse statement for this unwrap. 
                 std.debug.print("Debugging information: {s}", .{debug_info.?});
             }
-                glib.clearError(err);
+            glib.clearError(@ptrCast(err));
-                glib.free(debug_info);
+            glib.free(@ptrCast(debug_info));
-            },
+        } else {
-            else => {},
+            std.debug.print("Unknown type received {any}\n", .{ msg });
         }
-
+        // msg.unref();
-        msg.unref();
+    } else {
+        std.debug.print("ret message not handled type: {any}\n", .{ ret_msg });
     }
 
     bus.unref();
-    pipeline.setState(gst.State.null);
+    _ = pipeline.as(gst.Element).setState(gst.State.null);
     pipeline.unref();
+
+    std.debug.print("run complete\n", .{});
 }