bither / bither-android-lib Goto Github PK

readme:
System.loadLibrary("jpegpi");
System.loadLibrary("pijni");
demo:
System.loadLibrary("jpegbither");
System.loadLibrary("bitherjni");

it is difference.
and when i you it , there are some some wrong "Native method not found"
anyone know how to do it

I download your project and test the NativeUtil.compressBitmap method. the result is not as good as you say.

I use 4 pictures. here is the result:

Obviously, the size which set optimize_coding to false are only 1.05 - 1.10 times of the others, not as you say "save 5-10 times of image space". And the image quality is almost same.

Is there something wrong? Expect your reply！

Thanks.

libjpegbither.so is 32-bit instead of 64-bit , Don't it support 64 - bit ?

java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.testjpg-1/base.apk"],nativeLibraryDirectories=[/data/app/com.example.testjpg-1/lib/arm64, /data/app/com.example.testjpg-1/base.apk!/lib/arm64-v8a, /vendor/lib64, /system/lib64]]] couldn't find "libjpegbither.so"

Hope supported

cd ../libjpeg-turbo-android/libjpeg-turbo/jni
ndk-build

I cannot get libjpegpi.so in../libjpeg-turbo-android/libjpeg-turbo/libs/armeabi
I get libjpegbither.so

bither-android-lib/libjpeg-turbo-android/libjpeg-turbo/libs/armeabi
drwxrwxr-x 2 malin malin 4096 12月 4 17:36 ./
drwxrwxr-x 3 malin malin 4096 12月 4 17:36 ../
-rwxrwxr-x 1 malin malin 30096 12月 4 17:36 cjpeg*
-rwxrwxr-x 1 malin malin 25940 12月 4 17:36 djpeg*
-rwxrwxr-x 1 malin malin 25880 12月 4 17:36 jpegtran*
-rwxrwxr-x 1 malin malin 230784 12月 4 17:36 libjpegbither.so*
-rwxrwxr-x 1 malin malin 13592 12月 4 17:36 rdjpgcom*
-rwxrwxr-x 1 malin malin 42624 12月 4 17:36 tjbench*
-rwxrwxr-x 1 malin malin 26012 12月 4 17:36 tjunittest*
-rwxrwxr-x 1 malin malin 17688 12月 4 17:36 wrjpgcom*

while i use your test code in eclipse, it works fine。but when i use it in android studio, it always failed.

java.lang.UnsatisfiedLinkError: Couldn't load jpegpi from loader dalvik.system.PathClassLoader[dexPath=/data/app/com.nice.main-6.apk,libraryPath=/data/app-lib/com.nice.main-6]: findLibrary returned null

how can i fix it in android studio. Thanks~~

If this is ture, google must can find and resolve it.

At first, I appreciate your great work for resolving the difficult jpeg quality problem of Android OS.
I faced the same problem and REASON.md really helped me.

I'd like to use this code for my project. Would you determine its license?

i create tropicalfish_3.jpg,tropicalfish_1.jpg,tropicalfish_2.jpg i think Image effects no change.
my code:

package com.example.testlibjpeg;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import com.pi.common.util.NativeUtil;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.os.Bundle;

public class MainActivity extends Activity
{

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    String path = "/mnt/sdcard/DCIM/Camera/";
    String filePath = path + "tropicalfish.jpg";
    File file = new File(filePath);
    if (file.exists())
    {
        Bitmap bitmap = BitmapFactory.decodeFile(filePath);
        File file2 = new File(path + "tropicalfish_3.jpg");
        try
        {
            bitmap.compress(CompressFormat.JPEG, 60, new FileOutputStream(file2));
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        NativeUtil.compressBitmap(bitmap, 60, path+"tropicalfish_1.jpg", false);
        NativeUtil.compressBitmap(bitmap, 60, path+"tropicalfish_2.jpg", true);
    }
}

}

在readme里下面
System.loadLibrary("jpegpi");
System.loadLibrary("pijni");
在demo里
System.loadLibrary("jpegbither");
System.loadLibrary("bitherjni");

二者好像不是很一样。

直接将jpegbither和bitherjni的so文件复制进目录里，native util的compressBitmap会找不到相应的jni函数。

开发工具是android studio