OrigamiEngine

https://github.com/ap4y/OrigamiEngine

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

輕量級iOS,OSX音頻處理工具,支持opus, flac, cue, mp3, m4a, m3u

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Supported formats

• Audio sources: http and local files?支持http方式以及本地文件方式
• Audio files:?opus,?flac,?mp3,?m4a,?wav?and other from CoreAudio?支持的文件格式包括opus,?flac,?mp3,?m4a,?wav以及其他CoreAudio支持的類型
• Playlists:?cue,?m3u?支持播放列表
  

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Features

• Ligthweight: 300kb compiled, 1.2mb with libFLAC?輕量級:編譯后是300kb,鏈接到libFLAC后是1.2mb
• Small memory foorprint: no more than 2.5mb for the flac files?占用內存小:flac文件不會超過2.5mb
• Low resource consumption: about 14% CPU usage for FLAC on ipod 4g?低資源消耗:在ipod 4g上只用到了14%的CPU
• All operations in background with GCD?所有后臺操作基于GCD
• Event-based (using dispatch sources and CoreAudio async api)?事件觸發機制(使用了dispatch source以及CoreAudio 異步的api)
• Provides full audio metadata (vorbis, id3 tags) with embeeded cover images?提供全部的音頻元數據包括嵌入的圖片資源
• HTTP data caching?HTTP數據緩存
• Tested (currently about 85% code coverage)?已經測試過了(當前超過85%已經測試過)

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Overview

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

提供靜態庫或者cocoapods.靜態庫可用來編譯嵌入FLAC的庫,在OSX上,你可以使用靜態庫.

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Start playback:?開始播放:

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

Common operations:?常用的操作:

[_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:?代理方法:

- (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.

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Documentation

Project headers contain?appledoc?comments, precompiled docset?here.

工程頭文件件中包含了appledoc的描述.

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Tests

OCUnit?tests included into the project.

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Credits

• http://cogx.org/?by Vincent Spader. FLAC decoder implementation based on?Cog?sources

總結

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