From 366e04d81feb9a403f643bfe9aee0cd934993cbd Mon Sep 17 00:00:00 2001
From: Christian Schneppe <christian@pix-art.de>
Date: Sat, 21 May 2016 23:03:34 +0200
Subject: detect length of video file

---
 .../eu/siacs/conversations/ui/XmppActivity.java    | 34 +++++++++++++---------
 1 file changed, 20 insertions(+), 14 deletions(-)

(limited to 'src/main/java/eu/siacs/conversations')

diff --git a/src/main/java/eu/siacs/conversations/ui/XmppActivity.java b/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
index be23e932c..0618fd460 100644
--- a/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
@@ -23,6 +23,7 @@ import android.content.pm.ResolveInfo;
 import android.graphics.Bitmap;
 import android.graphics.Color;
 import android.graphics.Point;
+import android.media.MediaMetadataRetriever;
 import android.net.Uri;
 import android.nfc.NdefMessage;
 import android.nfc.NdefRecord;
@@ -1182,20 +1183,25 @@ public abstract class XmppActivity extends Activity {
 
 	}
 
-	public void loadVideoPreview(Message message, ImageView imageView) {
-		BitmapPool bitmapPool = Glide.get(getApplicationContext()).getBitmapPool();
-		int microSecond = 1000000;// 1st second of video
-		VideoBitmapDecoder videoBitmapDecoder = new VideoBitmapDecoder(microSecond);
-		FileDescriptorBitmapDecoder fileDescriptorBitmapDecoder = new FileDescriptorBitmapDecoder(videoBitmapDecoder, bitmapPool, DecodeFormat.PREFER_ARGB_8888);
-		File vp = xmppConnectionService.getFileBackend().getFile(message, true);
-		Glide.with(getApplicationContext())
-				.load(vp)
-				.asBitmap()
-				.override(400, 400)
+    public void loadVideoPreview(Message message, ImageView imageView) {
+        File vp = xmppConnectionService.getFileBackend().getFile(message, true);
+        MediaMetadataRetriever retriever = new MediaMetadataRetriever();
+        //use one of overloaded setDataSource() functions to set your data source
+        retriever.setDataSource(this, Uri.fromFile(vp));
+        String time = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
+        long microSecond = Long.parseLong(time);
+        int duration = (int) microSecond / 2; //preview at half of video
+        BitmapPool bitmapPool = Glide.get(getApplicationContext()).getBitmapPool();
+        VideoBitmapDecoder videoBitmapDecoder = new VideoBitmapDecoder(duration);
+        FileDescriptorBitmapDecoder fileDescriptorBitmapDecoder = new FileDescriptorBitmapDecoder(videoBitmapDecoder, bitmapPool, DecodeFormat.PREFER_ARGB_8888);
+        Glide.with(getApplicationContext())
+                .load(vp)
+                .asBitmap()
+                .override(400, 400)
                 .fitCenter()
                 //.centerCrop()
-				.diskCacheStrategy(DiskCacheStrategy.RESULT)
-				.videoDecoder(fileDescriptorBitmapDecoder)
-				.into(imageView);
-	}
+                .diskCacheStrategy(DiskCacheStrategy.RESULT)
+                .videoDecoder(fileDescriptorBitmapDecoder)
+                .into(imageView);
+    }
 }
-- 
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