From 89107ec78a880cecf0ad5e7f97c413e50da1299e Mon Sep 17 00:00:00 2001
From: wujianjun <wujianjun@kibey.com>
Date: Wed, 2 Nov 2016 17:31:22 +0800
Subject: [PATCH] avoid sending same player status through kvo event

---
 src/DOUAudioEventLoop.m |  9 +++------
 src/DOUAudioStreamer.m  | 22 ++++++++++++++++++++++
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/src/DOUAudioEventLoop.m b/src/DOUAudioEventLoop.m
index 33babbb..4f0e8a0 100644
--- a/src/DOUAudioEventLoop.m
+++ b/src/DOUAudioEventLoop.m
@@ -352,11 +352,6 @@ - (BOOL)_handleEvent:(event_type)event withStreamer:(DOUAudioStreamer **)streame
     [[*streamer fileProvider] setEventBlock:_fileProviderEventBlock];
   }
   else if (event == event_provider_events) {
-    if (*streamer != nil &&
-        [*streamer status] == DOUAudioStreamerBuffering) {
-      [*streamer setStatus:DOUAudioStreamerPlaying];
-    }
-
     [*streamer setBufferingRatio:(double)[[*streamer fileProvider] receivedLength] / [[*streamer fileProvider] expectedLength]];
   }
   else if (event == event_finalizing) {
@@ -424,7 +419,8 @@ - (void)_handleStreamer:(DOUAudioStreamer *)streamer
     return;
   }
 
-  if ([streamer status] != DOUAudioStreamerPlaying) {
+  if ([streamer status] != DOUAudioStreamerPlaying
+    && [streamer status] != DOUAudioStreamerBuffering) {
     return;
   }
 
@@ -468,6 +464,7 @@ - (void)_handleStreamer:(DOUAudioStreamer *)streamer
 
   switch ([[streamer decoder] decodeOnce]) {
   case DOUAudioDecoderSucceeded:
+    [streamer setStatus:DOUAudioStreamerPlaying];
     break;
 
   case DOUAudioDecoderFailed:
diff --git a/src/DOUAudioStreamer.m b/src/DOUAudioStreamer.m
index c751f5d..9511bec 100644
--- a/src/DOUAudioStreamer.m
+++ b/src/DOUAudioStreamer.m
@@ -238,4 +238,26 @@ - (void)stop
   }
 }
 
+- (void)setStatus:(DOUAudioStreamerStatus)status
+{
+  if (_status != status) {
+    [self willChangeValueForKey:@"status"];
+    _status = status;
+    [self didChangeValueForKey:@"status"];
+  }
+}
+
+- (DOUAudioStreamerStatus)status
+{
+  return _status;
+}
+
++ (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key
+{
+  if ([key isEqualToString:@"status"]) {
+    return NO;
+  }
+  return YES;
+}
+
 @end