feat(duration): add video duration to response (react-native-image-picker#1676)

Author: ravirajn22

README.md

@@ -105,6 +105,7 @@ The `callback` will be called with a response object, refer to [The Response Obj
 | fileSize     | OK  | OK      | The file size (photos only)                                                                                     |
 | type         | OK  | OK      | The file type (photos only)                                                                                     |
 | fileName     | OK  | OK      | The file name                                                                                                   |
+| duration     | OK  | OK      | The selected video duration in seconds                                                                          |
 
 ## Note on file storage
 

android/src/main/java/com/imagepicker/Utils.java

@@ -11,6 +11,7 @@
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.hardware.camera2.CameraCharacteristics;
+import android.media.MediaMetadataRetriever;
 import android.net.Uri;
 import android.os.Build;
 import android.os.ParcelFileDescriptor;
@@ -251,6 +252,14 @@ static double getFileSize(Uri uri, Context context) {
         }
     }
 
+    static int getDuration(Uri uri, Context context) {
+        MediaMetadataRetriever m = new MediaMetadataRetriever();
+        m.setDataSource(context, uri);
+        int duration = Math.round(Float.parseFloat(m.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION))) / 1000;
+        m.release();
+        return duration;
+    }
+
     static boolean shouldResizeImage(int origWidth, int origHeight, Options options) {
         if ((options.maxWidth == 0 || options.maxHeight == 0) && options.quality == 100) {
             return false;
@@ -346,10 +355,10 @@ static ReadableMap getResponseMap(Uri uri, Options options, Context context) {
 
     static ReadableMap getVideoResponseMap(Uri uri, Context context) {
         String fileName = uri.getLastPathSegment();
-
         WritableMap map = Arguments.createMap();
         map.putString("uri", uri.toString());
         map.putDouble("fileSize", getFileSize(uri, context));
+        map.putInt("duration", getDuration(uri, context));
         map.putString("fileName", fileName);
         return map;
     }

ios/ImagePickerManager.m

@@ -186,6 +186,8 @@ - (void)onVideoObtained:(NSDictionary<NSString *,id> *)info {
         }
     }
 
+    AVAsset *asset = [AVAsset assetWithURL:videoDestinationURL];
+    self.response[@"duration"] = @(roundf(CMTimeGetSeconds(asset.duration)));
     self.response[@"uri"] = videoDestinationURL.absoluteString;
     self.callback(@[self.response]);
 }

src/types.ts

@@ -26,6 +26,7 @@ export interface ImagePickerResponse {
   fileSize?: number;
   type?: string; //TODO
   fileName?: string;
+  duration?: number;
 }
 
 export type PhotoQuality =