FFmpeg编解码ADPCM_*格式音频

ADPCM格式音频编解码：https://lists.ffmpeg.org/doxygen/3.2/adpcm_8c_source.htmlphp 如下是代码：html 1 /* 2 * Copyright (c) 2001-2003 The FFmpeg project 3 * 4 * first version by Francois Revol (revol@f

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