From 5a491c4f8342a9d4fdde4a1679ec747cd336c687 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Fri, 14 Aug 2020 00:25:57 +0200
Subject: Support some more image formats

---
 ui/commands.go | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/ui/commands.go b/ui/commands.go
index 0cbf2b0..6e9d3b7 100644
--- a/ui/commands.go
+++ b/ui/commands.go
@@ -309,26 +309,18 @@ func uploadImage(cmd *Command, filePath string, fileName string) {
 	}
 	fileSize := len(fileData)
 
-	imageMetadata, _, err := image.DecodeConfig(bytes.NewReader(fileData))
+	imageMetadata, format, err := image.DecodeConfig(bytes.NewReader(fileData))
 	if err != nil {
 		cmd.Reply("Failed to decode image")
 		return
 	}
 
-	var imageType string
-	// TODO: Detect all types matrix supports
-	if fileSize >= 4 && fileData[0] == 0xFF && fileData[1] == 0xD8 && fileData[fileSize-2] == 0xFF && fileData[fileSize-1] == 0xD9 {
-		imageType = "jpeg"
-	} else if fileSize >= 8 && string(fileData[0:8]) == "\211PNG\r\n\032\n" {
-		imageType = "png"
-	}
-
-	if imageType == "" {
-		cmd.Reply("Only jpeg, png, webm and mp4 files are supported")
+	if format == "" {
+		cmd.Reply("Unknown image format for file: %s", filePath)
 		return
 	}
 
-	imageMimeType := fmt.Sprintf("image/%s", imageType)
+	imageMimeType := fmt.Sprintf("image/%s", format)
 
 	resp, err := cmd.Matrix.Client().UploadBytesWithName(fileData, imageMimeType, fileName)
 	if err != nil {
-- 
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