Ability to specify seek tolerance on iOS

README.md

@@ -240,6 +240,11 @@ var styles = StyleSheet.create({
 * [onLoad](#onload)
 * [onLoadStart](#onloadstart)
 
+### Methods
+* [seek](#seek)
+
+### Configurable props
+
 #### allowsExternalPlayback
 Indicates whether the player allows switching to external playback mode such as AirPlay or HDMI.
 * **true (default)** - allow switching to external playback mode
@@ -502,6 +507,45 @@ Example:
 
 Platforms: all
 
+### Methods
+Methods operate on a ref to the Video element. You can create a ref using code like:
+```
+return (
+  <Video source={...}
+    ref => (this.player = ref) />
+);
+```
+
+#### seek()
+`seek(seconds)`
+
+Seek to the specified position represented by seconds. seconds is a float value.
+
+`seek()` can only be called after the `onLoad` event has fired.
+
+Example:
+```
+this.player.seek(200); // Seek to 3 minutes, 20 seconds
+```
+
+Platforms: all
+
+##### Exact seek
+
+By default iOS seeks within 100 milliseconds of the target position. If you need more accuracy, you can use the seek with tolerance method:
+
+`seek(seconds, tolerance)`
+
+tolerance is the max distance in milliseconds from the seconds position that's allowed. Using a more exact tolerance can cause seeks to take longer. If you want to seek exactly, set tolerance to 0.
+
+Example:
+```
+this.player.seek(120, 50); // Seek to 2 minutes with +/- 50 milliseconds accuracy
+```
+
+Platforms: iOS
+
+
 ### Additional props
 
 To see the full list of available props, you can check the [propTypes](https://github.com/react-native-community/react-native-video/blob/master/Video.js#L246) of the Video.js component.

Video.js

@@ -1,6 +1,6 @@
 import React, {Component} from 'react';
 import PropTypes from 'prop-types';
-import {StyleSheet, requireNativeComponent, NativeModules, View, ViewPropTypes, Image} from 'react-native';
+import {StyleSheet, requireNativeComponent, NativeModules, View, ViewPropTypes, Image, Platform} from 'react-native';
 import resolveAssetSource from 'react-native/Libraries/Image/resolveAssetSource';
 import TextTrackType from './TextTrackType';
 import VideoResizeMode from './VideoResizeMode.js';
@@ -27,8 +27,17 @@ export default class Video extends Component {
     this._root.setNativeProps(nativeProps);
   }
 
-  seek = (time) => {
-    this.setNativeProps({ seek: time });
+  seek = (time, tolerance = 100) => {
+    if (Platform.OS === 'ios') {
+      this.setNativeProps({
+        seek: {
+          time,
+          tolerance
+        }
+      });
+    } else {
+      this.setNativeProps({ seek: time });
+    }
   };
 
   presentFullscreenPlayer = () => {
@@ -250,7 +259,10 @@ export default class Video extends Component {
 Video.propTypes = {
   /* Native only */
   src: PropTypes.object,
-  seek: PropTypes.number,
+  seek: PropTypes.oneOfType([
+    PropTypes.number,
+    PropTypes.object
+  ]),
   fullscreen: PropTypes.bool,
   onVideoLoadStart: PropTypes.func,
   onVideoLoad: PropTypes.func,

ios/RCTVideo.m

@@ -569,21 +569,28 @@ - (float)getCurrentTime
 
 - (void)setCurrentTime:(float)currentTime
 {
-  [self setSeek: currentTime];
+  NSDictionary *info = @{
+                         @"time": [NSNumber numberWithFloat:currentTime],
+                         @"tolerance": [NSNumber numberWithInt:100]
+                         };
+  [self setSeek:info];
 }
 
-- (void)setSeek:(float)seekTime
+- (void)setSeek:(NSDictionary *)info
 {
-  int timeScale = 10000;
+  NSNumber *seekTime = info[@"time"];
+  NSNumber *seekTolerance = info[@"tolerance"];
+
+  int timeScale = 1000;
 
   AVPlayerItem *item = _player.currentItem;
   if (item && item.status == AVPlayerItemStatusReadyToPlay) {
     // TODO check loadedTimeRanges
 
-    CMTime cmSeekTime = CMTimeMakeWithSeconds(seekTime, timeScale);
+    CMTime cmSeekTime = CMTimeMakeWithSeconds([seekTime floatValue], timeScale);
     CMTime current = item.currentTime;
     // TODO figure out a good tolerance level
-    CMTime tolerance = CMTimeMake(1000, timeScale);
+    CMTime tolerance = CMTimeMake([seekTolerance floatValue], timeScale);
     BOOL wasPaused = _paused;
 
     if (CMTimeCompare(current, cmSeekTime) != 0) {
@@ -593,11 +600,11 @@ - (void)setSeek:(float)seekTime
           [self addPlayerTimeObserver];
         }
         if (!wasPaused) {
-            [self setPaused:false];
+          [self setPaused:false];
         }
         if(self.onVideoSeek) {
             self.onVideoSeek(@{@"currentTime": [NSNumber numberWithFloat:CMTimeGetSeconds(item.currentTime)],
-                               @"seekTime": [NSNumber numberWithFloat:seekTime],
+                               @"seekTime": seekTime,
                                @"target": self.reactTag});
         }
       }];
@@ -608,7 +615,7 @@ - (void)setSeek:(float)seekTime
   } else {
     // TODO: See if this makes sense and if so, actually implement it
     _pendingSeek = true;
-    _pendingSeekTime = seekTime;
+    _pendingSeekTime = [seekTime floatValue];
   }
 }
 

ios/RCTVideoManager.m

@@ -32,7 +32,7 @@ - (dispatch_queue_t)methodQueue
 RCT_EXPORT_VIEW_PROPERTY(playWhenInactive, BOOL);
 RCT_EXPORT_VIEW_PROPERTY(ignoreSilentSwitch, NSString);
 RCT_EXPORT_VIEW_PROPERTY(rate, float);
-RCT_EXPORT_VIEW_PROPERTY(seek, float);
+RCT_EXPORT_VIEW_PROPERTY(seek, NSDictionary);
 RCT_EXPORT_VIEW_PROPERTY(currentTime, float);
 RCT_EXPORT_VIEW_PROPERTY(fullscreen, BOOL);
 RCT_EXPORT_VIEW_PROPERTY(progressUpdateInterval, float);