1v1_7/MSYOUPAI/3rd/ZFPlayer/Classes/Core/ZFPlayerNotification.m

//
//  ZFPlayerNotification.m
//  ZFPlayer
//
// Copyright (c) 2016年 任子丰 ( http://github.com/renzifeng )
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#import "ZFPlayerNotification.h"

@interface ZFPlayerNotification ()

@property (nonatomic, assign) ZFPlayerBackgroundState backgroundState;

@end

@implementation ZFPlayerNotification

- (void)addNotification {
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(audioSessionRouteChangeNotification:)
                                                 name:AVAudioSessionRouteChangeNotification
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationWillResignActiveNotification)
                                                 name:UIApplicationWillResignActiveNotification
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationDidBecomeActiveNotification)
                                                 name:UIApplicationDidBecomeActiveNotification
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(volumeDidChangeNotification:)
                                                 name:@"AVSystemController_SystemVolumeDidChangeNotification"
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(audioSessionInterruptionNotification:)
                                                 name:AVAudioSessionInterruptionNotification
                                               object:nil];
    
}

- (void)removeNotification {
    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVAudioSessionRouteChangeNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationWillResignActiveNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidBecomeActiveNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:@"AVSystemController_SystemVolumeDidChangeNotification" object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVAudioSessionInterruptionNotification object:nil];
}

- (void)dealloc {
    [self removeNotification];
}

- (void)audioSessionRouteChangeNotification:(NSNotification*)notification {
    dispatch_async(dispatch_get_main_queue(), ^{
        NSDictionary *interuptionDict = notification.userInfo;
        NSInteger routeChangeReason = [[interuptionDict valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue];
        switch (routeChangeReason) {
            case AVAudioSessionRouteChangeReasonNewDeviceAvailable: {
                if (self.newDeviceAvailable) self.newDeviceAvailable(self);
            }
                break;
            case AVAudioSessionRouteChangeReasonOldDeviceUnavailable: {
                if (self.oldDeviceUnavailable) self.oldDeviceUnavailable(self);
            }
                break;
            case AVAudioSessionRouteChangeReasonCategoryChange: {
                if (self.categoryChange) self.categoryChange(self);
            }
                break;
        }
    });
}

- (void)volumeDidChangeNotification:(NSNotification *)notification {
    float volume = [[[notification userInfo] objectForKey:@"AVSystemController_AudioVolumeNotificationParameter"] floatValue];
    if (self.volumeChanged) self.volumeChanged(volume);
}

- (void)applicationWillResignActiveNotification {
    self.backgroundState = ZFPlayerBackgroundStateBackground;
    if (_willResignActive) _willResignActive(self);
}

- (void)applicationDidBecomeActiveNotification {
    self.backgroundState = ZFPlayerBackgroundStateForeground;
    if (_didBecomeActive) _didBecomeActive(self);
}

- (void)audioSessionInterruptionNotification:(NSNotification *)notification {
    NSDictionary *interuptionDict = notification.userInfo;
    AVAudioSessionInterruptionType interruptionType = [[interuptionDict valueForKey:AVAudioSessionInterruptionTypeKey] integerValue];
    if (self.audioInterruptionCallback) self.audioInterruptionCallback(interruptionType);
}

@end