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开源mp3解码库 MAD (libmad)

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PHP C/C++ Bash Go MPEG 20202 次浏览
libmad是一个开源mp3解码库,其对mp3解码算法做了很多优化,性能较好,很多播放器如mplayer、xmms等都是使用这个开源库进行解码的;如果要设计mp3播放器而又不想研究mp3解码算法的话,libmad是个不错的选择。

MAD (libmad)是一个开源的高精度 MPEG 音频解码库,支持 MPEG-1(Layer I, Layer II 和 LayerIII(也就是 MP3)。LIBMAD 提供 24-bit 的 PCM 输出,完全是定点计算,非常适合没有浮点支持的平台上使用。使用 libmad 提供的一系列 API,就可以非常简单地实现 MP3 数据解码工作。在 libmad 的源代码文件目录下的 mad.h 文件中,可以看到绝大部分该库的数据结构和 API 等。


MAD is a high-quality MPEG audio decoder. It currently supportsMPEG-1 and theMPEG-2 extension to lower sampling frequencies, as well as the de facto MPEG 2.5 format. All three audio layers — Layer I, Layer II, and Layer III (i.e. MP3) — are fully implemented.

MAD does not yet support MPEG-2 multichannel audio (although it should be backward compatible with such streams) nor does it currently support AAC.

MAD has the following special features:

  • 24-bit PCM output
  • 100% fixed-point (integer) computation
  • completely new implementation based on the ISO/IEC standards
  • available under the terms of the GNU General Public License (GPL)

哪些应用程序使用了 MAD

The following third party applications use or plan to use MAD for audio decoding. These links are provided for convenience only; no endorsement or any other representation is intended by this list.

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