diff --git a/spa/plugins/libcamera/libcamera-device.cpp b/spa/plugins/libcamera/libcamera-device.cpp
index 65c743741..5eb46a1ae 100644
--- a/spa/plugins/libcamera/libcamera-device.cpp
+++ b/spa/plugins/libcamera/libcamera-device.cpp
@@ -8,6 +8,8 @@
 
 #include <stddef.h>
 
+#include <sstream>
+
 #include <spa/support/plugin.h>
 #include <spa/support/log.h>
 #include <spa/support/loop.h>
@@ -110,8 +112,6 @@ static int emit_info(struct impl *impl, bool full)
 	uint32_t n_items = 0;
 	struct spa_device_info info;
 	struct spa_param_info params[2];
-	char path[256], name[256], devices_str[256];
-	struct spa_strbuf buf;
 	Camera& camera = *impl->camera;
 
 	info = SPA_DEVICE_INFO_INIT();
@@ -119,8 +119,10 @@ static int emit_info(struct impl *impl, bool full)
 	info.change_mask = SPA_DEVICE_CHANGE_MASK_PROPS;
 
 #define ADD_ITEM(key, value) items[n_items++] = SPA_DICT_ITEM_INIT(key, value)
-	snprintf(path, sizeof(path), "libcamera:%s", impl->device_id.c_str());
-	ADD_ITEM(SPA_KEY_OBJECT_PATH, path);
+
+	const auto path = "libcamera:" + impl->device_id;
+	ADD_ITEM(SPA_KEY_OBJECT_PATH, path.c_str());
+
 	ADD_ITEM(SPA_KEY_DEVICE_API, "libcamera");
 	ADD_ITEM(SPA_KEY_MEDIA_CLASS, "Video/Device");
 	ADD_ITEM(SPA_KEY_API_LIBCAMERA_PATH, impl->device_id.c_str());
@@ -134,21 +136,24 @@ static int emit_info(struct impl *impl, bool full)
 	ADD_ITEM(SPA_KEY_DEVICE_PRODUCT_NAME, model.c_str());
 	ADD_ITEM(SPA_KEY_DEVICE_DESCRIPTION, model.c_str());
 
-	snprintf(name, sizeof(name), "libcamera_device.%s", impl->device_id.c_str());
-	ADD_ITEM(SPA_KEY_DEVICE_NAME, name);
+	const auto name = "libcamera_device." + impl->device_id;
+	ADD_ITEM(SPA_KEY_DEVICE_NAME, name.c_str());
 
 	auto device_numbers = cameraDevice(camera);
+	std::string devids;
 
 	if (!device_numbers.empty()) {
-		spa_strbuf_init(&buf, devices_str, sizeof(devices_str));
+		std::ostringstream s;
+
 
 		/* encode device numbers into a json array */
-		spa_strbuf_append(&buf, "[ ");
-		for(int64_t device_number : device_numbers)
-			spa_strbuf_append(&buf, "%" PRId64 " ", device_number);
+		s << "[ ";
+		for (const auto& devid : device_numbers)
+			s << devid << ' ';
+		s << ']';
 
-		spa_strbuf_append(&buf, "]");
-		ADD_ITEM(SPA_KEY_DEVICE_DEVIDS, devices_str);
+		devids = std::move(s).str();
+		ADD_ITEM(SPA_KEY_DEVICE_DEVIDS, devids.c_str());
 	}
 
 #undef ADD_ITEM