feat: add gif speed up and speed down command

src/main/kotlin/cn/rtast/fancybot/commands/reply/SpeedUpGIFCommand.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright © 2024 RTAkland
+ * Author: RTAkland
+ * Date: 2024/10/27
+ */
+
+
+package cn.rtast.fancybot.commands.reply
+
+import cn.rtast.fancybot.commands.misc.ShortLinkCommand.Companion.makeShortLink
+import cn.rtast.fancybot.commands.parse.AsciiArtCommand
+import cn.rtast.fancybot.util.misc.ImageBed
+import cn.rtast.fancybot.util.misc.makeGif
+import cn.rtast.fancybot.util.misc.toURL
+import cn.rtast.rob.entity.GetMessage
+import cn.rtast.rob.entity.GroupMessage
+import cn.rtast.rob.util.ob.MessageChain
+import com.madgag.gif.fmsware.GifDecoder
+
+object SpeedUpGIFCommand {
+    suspend fun speedUp(message: GroupMessage, getMsg: GetMessage.Message, multiply: Float) {
+        val gifUrl = AsciiArtCommand.getImageUrl(getMsg)
+        val gifStream = gifUrl.toURL().openStream()
+        val decoder = GifDecoder()
+        decoder.read(gifStream)
+        val frames = (0 until decoder.frameCount).map { decoder.getFrame(it) }.reversed()
+        val gifBase64 = decoder.makeGif(frames, multiply)
+        val imgBedUrl = ImageBed.upload(gifBase64)
+        val shortLink = imgBedUrl.makeShortLink()
+        val msg = MessageChain.Builder().addImage(imgBedUrl).addText(shortLink).build()
+        message.reply(msg)
+    }
+}