Audio Stream Player for Objective-C

Note: Build on Xcode 5

Basic

self.player = [[HSUAudioStreamPlayer alloc]
               initWithURL:[NSURL URLWithString:@"http://goo.gl/ATX7Ea"]
               cacheFilePath:nil];
[self.player play];

Advanced

Figure 1-1. Demo screenshot

Player for HTTP URL

self.player = [[HSUAudioStreamPlayer alloc]
               initWithURL:[NSURL URLWithString:urlString]
               cacheFilePath:cacheFile];

Player for Local File

self.player = [[HSUAudioStreamPlayer alloc]
               initWithURL:nil
               cacheFilePath:cacheFile];

Player for HTTP URL with local cache

self.player = [[HSUAudioStreamPlayer alloc]
               initWithURL:[NSURL URLWithString:urlString]
               cacheFilePath:cacheFile];

Receive state changes

[[NSNotificationCenter defaultCenter]
 addObserver:self
 selector:@selector(playBackStateChanged:)
 name:HSUAudioStreamPlayerStateChanged
 object:self.player];

- (void)playBackStateChanged:(NSNotification *)notification
{
	HSUAudioStreamPlayer *player = notification.object;
    HSUAudioStreamPlayBackState state = player.state;
    …
}

Controls

if (state == HSU_AS_STOPPED) {
    [self.player play];
}
else if (state == HSU_AS_PLAYING) {
    [self.player pause];
}
else if (state == HSU_AS_WAITTING) {
    [self.player stop];
}
else if (state == HSU_AS_PAUSED) {
    [self.player play];
}
else if (state == HSU_AS_STOPPED) {
    [self.player play];
}
else if (state == HSU_AS_FINISHED) {
    [self.player play];
}

Seek (open a new stream with HTTP Range)

[self.player seekToTime:time];

Work with recorder

#import <AVFoundation/AVFoundation.h>
self.player = ...
self.player.audioSessionCategory = 
	AVAudioSessionCategoryPlayAndRecord;
	// replace default value (AVAudioSessionCategoryPlayback)
	
or control category by yourself:
self.player.audioSessionCategory = nil;
[[AVAudioSession sharedInstance]
 setCategory:AVAudioSessionCategoryPlayAndRecord
 error:nil];

Retrieve player information

double duration = self.player.duration;
double progress = self.player.progress;
double currentTime = self.player.currentTime;
float volume = self.player.currentVolume;

Check cache completed

BOOL isCached = [HSUAudioCacheControl 
                 isCacheCompletedForCachePath:cacheFilePath]

How it works

Figure 1-2. Components and Data

Still need help?

Ask me on twitter, @tuoxie007