FFmpeg編解碼ADPCM_*格式音頻

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

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