Merge pull request #1 from recastrodiaz/speed

Implemented playback speed on iOS

Author: JONA-Cureambit

packages/video_player/CHANGELOG.md

@@ -1,19 +1,15 @@
 
-## 0.10.0+6
-
-* Android: Fix missing call to `event.put("event", "completed");` which makes it possible to detect when the video is over.
-
-## 0.10.0+5.1
+## 0.10.0+7
 
 * Implemented playback speed feature.
 
-## 0.10.0+5.2
+## 0.10.0+6
 
-* Fixed iOS build warnings about implicit retains.
+* Android: Fix missing call to `event.put("event", "completed");` which makes it possible to detect when the video is over.
 
 ## 0.10.0+5
 
-* Implemented playback speed feature.
+* Fixed iOS build warnings about implicit retains.
 
 ## 0.10.0+4
 

packages/video_player/ios/Classes/VideoPlayerPlugin.m

@@ -342,6 +342,19 @@ - (void)setVolume:(double)volume {
   _player.volume = (volume < 0.0) ? 0.0 : ((volume > 1.0) ? 1.0 : volume);
 }
 
+- (void)setPlayBackSpeed:(double)speed {
+  if (speed == 1.0 || speed == 0.0) {
+    _player.rate = speed;
+  } else if (speed < 0 || speed > 2.0) {
+    NSLog(@"Speed outside supported range %f", speed);
+  } else if ((speed > 1.0 && _player.currentItem.canPlayFastForward) ||
+             (speed < 1.0 && _player.currentItem.canPlaySlowForward)) {
+    _player.rate = speed;
+  } else {
+    NSLog(@"Unsupported speed. Cannot play fast/slow forward: %f", speed);
+  }
+}
+
 - (CVPixelBufferRef)copyPixelBuffer {
   CMTime outputItemTime = [_videoOutput itemTimeForHostTime:CACurrentMediaTime()];
   if ([_videoOutput hasNewPixelBufferForItemTime:outputItemTime]) {
@@ -494,6 +507,9 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
     } else if ([@"pause" isEqualToString:call.method]) {
       [player pause];
       result(nil);
+    } else if ([@"setPlayBackSpeed" isEqualToString:call.method]) {
+      [player setPlayBackSpeed:[[argsMap objectForKey:@"speed"] doubleValue]];
+      result(nil);
     } else {
       result(FlutterMethodNotImplemented);
     }

packages/video_player/lib/video_player.dart

@@ -93,7 +93,9 @@ class VideoPlayerValue {
   final double speed;
 
   bool get initialized => duration != null;
+
   bool get hasError => errorDescription != null;
+
   double get aspectRatio => size != null ? size.width / size.height : 1.0;
 
   VideoPlayerValue copyWith({
@@ -359,6 +361,9 @@ class VideoPlayerController extends ValueNotifier<VideoPlayerValue> {
           value = value.copyWith(position: newPosition);
         },
       );
+
+      // Ensure the video is played at the correct speed
+      await _applyPlayBackSpeed();
     } else {
       _timer?.cancel();
       // TODO(amirh): remove this on when the invokeMethod update makes it to stable Flutter.
@@ -433,6 +438,12 @@ class VideoPlayerController extends ValueNotifier<VideoPlayerValue> {
       return;
     }
 
+    // On iOS setting the speed will start playing the video automatically
+    // Do not change the video speed until after the video is played
+    if (!value.isPlaying) {
+      return;
+    }
+
     // ignore: strong_mode_implicit_dynamic_method
     await _channel.invokeMethod(
       'setPlayBackSpeed',