Help with Libjpeg-Turbo

[bazimogmbh]

Your version of libjpeg-turbo works perfectly with the code, but when i try to grab the sources and jni-build it, i always get this error

Native method not found: org.libjpegturbo.turbojpeg.TJDecompressor.init:()

Would appreciate any help with compiling the sources correctly.

[minhkhanh]

What is version of libjpeg source ?
You can try https://git.linaro.org/gitweb?p=people/tomgall/libjpeg-turbo/libjpeg-turbo.git;a=summary (linaro-android branch)

[bazimogmbh]

This is the one i am using git://git.linaro.org/people/tomgall/libjpeg-turbo/libjpeg-turbo.git -b linaro-android

Did you modify the makefile in any ways? I just downloaded the code, put it in jni folder of project and ndk-build it,
are there any other steps neccessary?

[minhkhanh]

You should ndk-build by command-line,
Next step: copy build output (so file in armeab/... dir) to libs folder in your project

[bazimogmbh]

Did it , it already copies the stuff in libs folder , still does not work .
Mind adding me to skype or gtalk and help me out? My skype id is abhishek9851 , I would be ready to pay for your help . Thank in advance :)

[minhkhanh]

Has you rename it? Output of original source is "libjpeg.so". But in java source is "turbojpeg" (TJLoader.java) rename to jpeg.

PS: I was re-checkout source and rebuild. And i get this error too.
I code this project long time ago. Now i don't remember what i do :(
I remember i was change Anroid.mk file, you can focus it.

[bazimogmbh]

I did rename it, the lib gets loaded, but the error is there. Any chance you have your old project somewhere? or the make file?

[minhkhanh]

Unfortunately I was reinstall my pc and lost it

[minhkhanh]

sorry for late!
solution to the problem:

[bazimogmbh]

Tried with this makefile , still same error

07-30 15:39:31.246: E/AndroidRuntime(28566): java.lang.UnsatisfiedLinkError: Native method not found: org.libjpegturbo.turbojpeg.TJDecompressor.init:()V
07-30 15:39:31.246: E/AndroidRuntime(28566): at org.libjpegturbo.turbojpeg.TJDecompressor.init(Native Method)

Mind sharing your jni folder ?

[minhkhanh]

Doesn't have any change more.
Checkout gt -> change android.mk -> ndk-build -> rename so and copy to my android project -> done

[bazimogmbh]

Thnx it works! But it works only and only if the lib is named turbo-jpeg.so . I tried changing

final class TJLoader {
static void load() {
// System.loadLibrary("turbo-jpeg");
System.loadLibrary("jpeg");
}
in this chase with libjpeg.so it wont work at all , but when i rename the .so to libjpeg-turbo.so and call
System.loadLibrary("turbo-jpeg"); it work, pretty strange !

[minhkhanh]

Of course

On Wed, Jul 31, 2013 at 2:59 PM, bazimogmbh [email protected]:

Thnx it works! But it works only and only if the lib is named
turbo-jpeg.so . I tried changing

final class TJLoader {
static void load() {
// System.loadLibrary("turbo-jpeg");
System.loadLibrary("jpeg");
}
in this chase with libjpeg.so it wont work at all , but when i rename the
.so to libjpeg-turbo.so and call
System.loadLibrary("turbo-jpeg"); it work, pretty strange !

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Trần Minh Khánh
FIT - University of Science HCMC
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