1 files changed, 31 insertions, 0 deletions
diff --git a/src/controllers/hid/hidioglobaloutputreportfifo.h b/src/controllers/hid/hidioglobaloutputreportfifo.h
new file mode 100644
index 0000000000..d9735b818e
--- /dev/null
+++ b/src/controllers/hid/hidioglobaloutputreportfifo.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include "controllers/controller.h"
+#include "controllers/hid/hiddevice.h"
+#include "rigtorp/SPSCQueue.h"
+#include "util/duration.h"
+
+/// Stores and sends OutputReports (independent of the ReportID) in First In /
+/// First Out (FIFO) order
+class HidIoGlobalOutputReportFifo {
+  public:
+    HidIoGlobalOutputReportFifo();
+
+    /// Caches new OutputReport to the FIFO, which will later be send by the IO thread
+    void addReportDatasetToFifo(const quint8 reportId,
+            const QByteArray& reportData,
+            const mixxx::hid::DeviceInfo& deviceInfo,
+            const RuntimeLoggingCategory& logOutput);
+
+    /// Sends the next OutputReport from FIFO to the HID device,
+    /// when if any report is cached in FIFO.
+    /// Returns true if a time consuming hid_write operation was executed.
+    bool sendNextReportDataset(QMutex* pHidDeviceAndPollMutex,
+            hid_device* pHidDevice,
+            const mixxx::hid::DeviceInfo& deviceInfo,
+            const RuntimeLoggingCategory& logOutput);
+
+  private:
+    // Lockless FIFO queue
+    rigtorp::SPSCQueue<QByteArray> m_fifoQueue;
+};