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codec/PacketCodec.java

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+package com.coloryr.allmusic.server.codec;
+
+import com.coloryr.allmusic.server.core.objs.enums.ComType;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+
+import java.nio.charset.StandardCharsets;
+
+public class PacketCodec {
+    public static ByteBuf pack(ComType type, String data, int data1) {
+        ByteBuf buf = Unpooled.buffer(0);
+        buf.writeByte(type.ordinal());
+        switch (type) {
+            case HUD:
+            case LYRIC:
+            case LIST:
+            case INFO:
+            case IMG:
+            case PLAY:
+                writeString(buf, data);
+                break;
+            case POS:
+                buf.writeInt(data1);
+                break;
+        }
+        return buf;
+    }
+
+    public static void pack(ByteBuf buf, ComType type, String data, int data1) {
+        buf.writeByte(type.ordinal());
+        switch (type) {
+            case HUD:
+            case LYRIC:
+            case LIST:
+            case INFO:
+            case IMG:
+            case PLAY:
+                writeString(buf, data);
+                break;
+            case POS:
+                buf.writeInt(data1);
+                break;
+        }
+    }
+
+    private static void writeString(ByteBuf buf, String text) {
+        byte[] temp = text.getBytes(StandardCharsets.UTF_8);
+        buf.writeInt(temp.length);
+        buf.writeBytes(temp);
+    }
+}