julienr / libpng-android Goto Github PK

Is there any way to change CMYK to RGB color space of image using your library..?

Hello! All application that contains libpng from stable branche are rejected by google play because it contains a security vulnerability disclosed in CEV-2015-8540.
Easiest way to fix problem is change libpng version in stable branch to 1.4.19 from libpng sourceforge repository.

libpng.a(pngrutil.o): In function png_init_filter_functions': /home/alex/Desktop/libpng-android-master/jni/pngrutil.c:3974: undefined reference to png_init_filter_functions_neon'

looks like this function doesn't exist for arm64, armeabi-v7a works fine

Is that any example to show usage?

Hi,
I am trying to use this library. A generated a static library and included in my project. I included png.h in my source file and compiled with : LOCAL_STATIC_LIBRARIES := libpng

But it cannot compile, and show undefined reference to `png_create_write_struct'. Looks that it isn't found references.

Hi, your distribution is missing the libpng arm directory, so when building for arm64-v8a architectures which support NEON, the build fails with 'undefined reference to 'png_init_filter_functions_neon'

java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "png_set_longjmp_fn" referenced by "libExample.so"...
at java.lang.Runtime.loadLibrary(Runtime.java:364)
at java.lang.System.loadLibrary(System.java:526)
at com.example.ARActivity.(ARActivity.java:92)
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1208)
at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2101)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)

Problem on nexus 5 with 4.4 android.

libpng-1.5 and later do not allow direct access to the members of png_ptr, i replaced new version in my project and it went wrong. can you give idea to build libpng version 1.2.56