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https://github.com/ap4y/OrigamiEngine

Lightweight audio engine for iOS and OSX with flac, cue, mp3, m4a, m3u support.
https://github.com/ap4y/OrigamiEngine

Last synced: 3 months ago
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Lightweight audio engine for iOS and OSX with flac, cue, mp3, m4a, m3u support.

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README

        

Lightweight iOS and OSX audio engine with opus, flac, cue, mp3, m4a, m3u support.

Supported formats
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* Audio sources: http and local files
* Audio files: `opus`, `flac`, `mp3`, `m4a`, `wav` and other from CoreAudio
* Playlists: `cue`, `m3u`

Features
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- Ligthweight: 300kb compiled, 1.2mb with libFLAC
- Small memory foorprint: no more than 2.5mb for the flac files
- Low resource consumption: about 14% CPU usage for FLAC on ipod 4g
- All operations in background with GCD
- Event-based (using dispatch sources and CoreAudio async api)
- Provides full audio metadata (vorbis, id3 tags) with embeeded cover images
- HTTP data caching
- Tested (currently about 85% code coverage)

Overview
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Static library and [cocoapods](cocoapods.org) `podspec` provided. Static library can be compiled with embeeded FLAC library (check project targets). For OSX you can use static framework.

Start playback:

self.player = [[ORGMEngine alloc] init];
NSURL* url = [NSURL URLWithString:tfUrl.text];
[_player playUrl:url];

Common operations:

[_player metadata]; // current metadata
[_player pause]; // pause playback
[_player resume]; // resume playback
[_player stop]; // stop playback
[_player seekToTime:seekSlider.value]; // seek to second
[_player setNextUrl:url withDataFlush:YES]; // play next track and clear current buffer

Delegate methods:

- (NSURL*)engineExpectsNextUrl:(ORGMEngine*)engine; // provides continious playback
- (void)engine:(ORGMEngine*)engine didChangeState:(ORGMEngineState)state; // state change callback

Check example project and tests for the additional information.

Documentation
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Project headers contain `appledoc` comments, precompiled docset [here](http://ap4y.github.com/OrigamiEngine/Documentation/index.html).

Tests
-------

`OCUnit` tests included into the project.

Credits
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- http://cogx.org/ by Vincent Spader. FLAC decoder implementation based on `Cog` sources

License
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(MIT license)