Add Opus frame processing fuction

src/rtp_opus.cc

@@ -40,3 +40,22 @@ rtp_error_t kvz_rtp::opus::push_opus_frame(connection *conn, uint8_t *data, uint
     return RTPGeneric::pushGenericFrame(conn, data, dataLen, 0);
 #endif
 }
+
+kvz_rtp::frame::rtp_frame *kvz_rtp::opus::process_opus_frame(
+    kvz_rtp::frame::rtp_frame *frame,
+    std::vector<kvz_rtp::frame::rtp_frame *>& fu,
+    rtp_error_t& error
+)
+{
+    (void)fu;
+
+    if (!frame) {
+        error = RTP_INVALID_VALUE;
+        
+        LOG_ERROR("Invalid value, unable to process frame!");
+        return nullptr;
+    }
+
+    error = RTP_OK;
+    return frame;
+}

src/rtp_opus.hh

@@ -11,5 +11,21 @@ namespace kvz_rtp {
         };
 
         rtp_error_t push_opus_frame(connection *conn, uint8_t *data, uint32_t data_len, uint32_t timestamp);
+
+        /* Process the incoming Opus frame
+         * The RTP frame "frame" given as parameter should be considered invalid after calling this function
+         * and no operatios should be performed on it after the function has returned.
+         *
+         * On success, a valid RTP frame is returned and "error" is set to RTP_OK
+         *
+         * If the original frame has been split and this is a fragment of it, the fragment is returned
+         * and "error" is set to RTP_NOT_READY
+         *
+         * If the frame is invalid, nullptr is returned and "error" is set to RTP_INVALID_VALUE (is possible) */
+        kvz_rtp::frame::rtp_frame *process_opus_frame(
+            kvz_rtp::frame::rtp_frame *frame,
+            std::vector<kvz_rtp::frame::rtp_frame *>& fu,
+            rtp_error_t& error
+        );
     };
 };