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libjpeg.so not found

project下载完以后，没有修改任何东西，点击压缩，就提示找不到找不到‘libjpeg.so’这个库，求解决，谢谢。

Android 7.0 "libjpeg.so" not found

FATAL EXCEPTION: Thread-5
Process: com.blueberry.compress, PID: 14240
java.lang.UnsatisfiedLinkError: dlopen failed: library "libjpeg.so" not found
at java.lang.Runtime.loadLibrary0(Runtime.java:977)
at java.lang.System.loadLibrary(System.java:1567)
at com.blueberry.compress.ImageCompress.(ImageCompress.java:12)
at com.blueberry.compress.ImageCompress.nativeCompressBitmap(Native Method)
at com.blueberry.compress.MainActivity.compressing(MainActivity.java:145)
at com.blueberry.compress.MainActivity.access$400(MainActivity.java:29)
at com.blueberry.compress.MainActivity$2.run(MainActivity.java:121)

编译不过，报错了

Error:error: '../../../../libjpeg/prebuilt/x86/libjpeg.so', needed by '../../../../build/intermediates/cmake/debug/obj/x86/libcompress.so', missing and no known rule to make it

多次压缩图片质量仍会变差

使用100的qulity，多次压缩之后图片质量还是变差了，文件大小也变大了，能不能无损的保存到本地，不进行压缩

实在没有发现比系统有任何优势

跟系统压缩对比
1，压缩后，文件大小相同（没有使用特殊图片，仅限于用手机拍摄的照片）
2，图像质量几乎没有变化（从肉眼看）
3，最关键，比系统压缩更耗时（几乎是系统压缩的2倍以上）

2018年6月30日，手机三星S8，Android7.0（还用过一台魅族测试，结论一样）

实践过程，通过Luban压缩，修改了质量压缩方式，得出以上结论

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