参考资源:http://developer.android.com/reference/android/media/MediaCodec.html
CSD:codec specific data
Many decoders require the actual compressed data stream to be preceded by "codec specific data", i.e. setup data used to initialize the codec such as PPS/SPS in the case of AVC video or code tables in the case of vorbis audio. The class MediaExtractor provides codec specific data as part of the returned track format in entries named "csd-0", "csd-1" ...
本文介绍了Android平台中MediaCodec的使用方式,并深入探讨了codecspecificdata(CSD)的概念及其重要性。CSD是许多解码器初始化过程中必需的数据,如AVC视频中的SPS/PPS或Vorbis音频中的码表。
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