added cli-args; added better panic exiting

src/main.zig

@@ -22,9 +22,15 @@ const max_edge_layers = 32;
 
 var exit_loop: bool = false;
 
+const CliArgs = struct {
+    hef_file_path: []const u8,
+    gst_source_path: []const u8,
+};
 
 pub fn main() !void {
 
+    var args: CliArgs = .{ .hef_file_path = undefined, .gst_source_path = undefined };
+
     std.posix.sigaction(std.posix.SIG.INT, &std.posix.Sigaction {
         .handler = .{
             .handler = struct {
@@ -50,8 +56,45 @@ pub fn main() !void {
 
     const alloc = arena.allocator();
 
+
+    var arg_source = try std.process.argsWithAllocator(alloc);
+    _ = arg_source.skip();
+
+    var hef_set = false;
+    var gst_set = false;
+
+
+    while (arg_source.next()) |cur_arg| {
+        if (std.mem.eql(u8, cur_arg, "--hef")) {
+
+            if (arg_source.next()) |x| {
+                args.hef_file_path = x;
+                hef_set = true;
+            } else {
+                std.process.fatal("--hef flag specified, but no value provided!\n", .{});
+            }
+        }
+        if (std.mem.eql(u8, cur_arg, "--gst-source")) {
+            if (arg_source.next()) |x| {
+                args.gst_source_path = x;
+                gst_set = true;
+            } else {
+                std.process.fatal("--gst-source flag specified, but no value provided!\n", .{});
+            }
+        }
+    }
+
+    if (!gst_set) {
+        std.process.fatal("Invalid usage. --gst-source value is required\n", .{});
+    }
+    if (!hef_set) {
+        std.process.fatal("Invalid usage. --hef value is required\n", .{});
+    }
+
+
+    std.debug.print("Using hardcoded hef file path :P\n", .{});
     std.fs.cwd().access(hef_file, .{ }) catch |e| {
-        std.debug.panic("Could not open hef file! '{any}'", .{ e });
+        std.process.fatal("Could not open hef file! '{any}'", .{ e });
     };
 
     var status: hlo.hailo_status = undefined;
@@ -119,6 +162,7 @@ pub fn main() !void {
     std.debug.print("HailoRT init completed\nGstreamer Init starting", .{});
 
 
+    _ = gst_block: {
         std.debug.print("Gstreamer Initialized\n", .{});
 
         const source: *gst.Element = gst.ElementFactory.make("v4l2src", "source") orelse unreachable;
@@ -158,7 +202,8 @@ pub fn main() !void {
         // the failure return code is -1 I believe
         if (gst.Element.linkMany(source, scale, format, sink_el) < 0) {
             pipeline.unref();
-        std.debug.panic("Elements could not be linked\n", .{});
+            std.debug.print("Elements could not be linked! Aborting!\n", .{});
+            break :gst_block;
         }
         std.debug.print("Elements linked\n", .{});
 
@@ -169,7 +214,8 @@ pub fn main() !void {
         const ret = pipeline.as(gst.Element).setState(gst.State.playing);
         if (ret == gst.StateChangeReturn.failure) {
             pipeline.unref();
-        std.debug.panic("Could not start pipeline", .{});
+            std.debug.print("Could not start pipeline! Aboring\n", .{});
+            break :gst_block;
         }
 
         const bus: *gst.Bus = pipeline.getBus(); 
@@ -203,6 +249,9 @@ pub fn main() !void {
         const output_frame_count = output_frame_size / @sizeOf(f32);
         const output_data: [:0]f32 = try alloc.allocSentinel(f32, output_frame_count, 0);
 
+        defer pipeline.unref();
+        defer _ = pipeline.as(gst.Element).setState(gst.State.null);
+        defer bus.unref();
 
         var run_count: u8 = 0;
 
@@ -220,10 +269,12 @@ pub fn main() !void {
 
             status = hlo.hailo_vstream_read_raw_buffer(output_vstreams[0], output_data.ptr, output_frame_size);
             if (status == hlo.HAILO_SUCCESS) {
-            for (0..50) |x| {
+                for (0..(output_data.len / 5)) |x| {
-                std.debug.print(" {d} ", .{output_data[x]});
+                        if (output_data[x] == 1.0) {
+
+                            std.debug.print("Person found! Confidence: {d}, {d}:{d}, {d}, {d}\n", .{ output_data[x + 1], output_data[x + 2], output_data[x + 3], output_data[x + 4], output_data[x + 5] });
+                        }
                 }
-            std.debug.print("\n", .{});
 
                 run_count += 1;
                 if (run_count > 20) {
@@ -237,11 +288,7 @@ pub fn main() !void {
 
         std.debug.print("Staring shutdown\n", .{ });
 
-
+    };
-    bus.unref();
-    _ = pipeline.as(gst.Element).setState(gst.State.null);
-    pipeline.unref();
-        // const bus: *gst.Bus = pipeline.getBus();
 
 
     _ = hlo.hailo_release_output_vstreams(&output_vstreams, output_vstream_size);