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1. 目录结构说明 api_adapter: 包含音视频两部分的接口; 视频录制接口: AW_VideoInput_API.h --> 对应demo:demo_video_in.c 音频录制与播放接口:AW_AudioInOut_API.h --> 集成了音频算法库 audio_effect --> 对应demo:demo_audio_in.c, demo_audio_out.c audio_effct: 音频算法库,包含 aec/ans/agc, drc/eq算法 audio_decoder: 音频解码器,目前只支持 aac 解码器 --> 对应demo:demo_audio_dec.c audio_encoder: 音频编码器,目前只支持 aac 编码器 tinyalsa: 音频输入输出接口驱动的封装层 demo: 调用api的实例,依赖 api_adapter 和 tinyalsa