P2P - Libdatachannel/RTC Library Files

libdatachannel/include/rtc/plihandler.hpp

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+/**
+ * Copyright (c) 2023 Arda Cinar
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef RTC_PLI_RESPONDER_H
+#define RTC_PLI_RESPONDER_H
+
+#if RTC_ENABLE_MEDIA
+
+#include "mediahandler.hpp"
+#include "utils.hpp"
+
+#include <unordered_map>
+
+namespace rtc {
+
+/// Responds to PLI and FIR messages sent by the receiver. The sender should respond to these
+/// messages by sending an intra.
+class RTC_CPP_EXPORT PliHandler final : public MediaHandler {
+    rtc::synchronized_callback<> mOnPli;
+
+public:
+	/// Constructs the PLIResponder object to notify whenever a new intra frame is requested
+	/// @param onPli The callback that gets called whenever an intra frame is requested by the receiver
+    PliHandler(std::function<void(void)> onPli);
+
+	void incoming(message_vector &messages, const message_callback &send) override;
+
+protected:
+	std::unordered_map<uint64_t, uint8_t> mFirSSRCSeqNumberMap;
+};
+
+}
+
+#endif // RTC_ENABLE_MEDIA
+
+#endif // RTC_PLI_RESPONDER_H