What is Non NDK platform library?

[Anmol prakash]

Hello ,

Can anyone explain what is Non NDK platform library ? Is
"libstagefright_soft_amrwbenc.

so" available in /system/lib is non-ndk
lib ?

Thanks
Anmol

[J Decker]

A complete list of public libraries is available within the NDK, under platforms/android-API/usr/lib.

 

Thanks
Anmol

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[J Decker]

On Mon, May 15, 2017 at 9:01 PM, Anmol prakash <anmolpra...@gmail.com> wrote:

it looks like stagefright should be supported?

from https://android-developers.googleblog.com/2016/06/android-changes-for-ndk-developers.html

$ readelf --dynamic libBroken.so | grep NEEDED
 0x00000001 (NEEDED)                     Shared library: [libnativehelper.so]
 0x00000001 (NEEDED)                     Shared library: [libutils.so]
 0x00000001 (NEEDED)                     Shared library: [libstagefright_foundation.so]
 0x00000001 (NEEDED)                     Shared library: [libmedia_jni.so]
 0x00000001 (NEEDED)                     Shared library: [liblog.so]
 0x00000001 (NEEDED)                     Shared library: [libdl.so]
 0x00000001 (NEEDED)                     Shared library: [libz.so]
 0x00000001 (NEEDED)                     Shared library: [libstdc++.so]
 0x00000001 (NEEDED)                     Shared library: [libm.so]
 0x00000001 (NEEDED)                     Shared library: [libc.so]

list of all native APIs

https://developer.android.com/ndk/guides/stable_apis.html?utm_campaign=android_discussion_ndkchanges_062716&utm_source=anddev&utm_medium=blog

 

that doesn't actually mention stagefright though - libc, libz, .... even EGL and GLES.... 

[Glenn Kasten]

NDK APIs are listed here:

https://developer.android.com/ndk/guides/stable_apis.html

Anything else is unlikely to work reliably across a variety of device models and OS versions.

I recommend that you restrict yourself to working with NDK APIs.

If you need additional open source native libraries and they have a suitable license,

you can build them from source and incorporate them into your app.

This is safer than depending on the platform version to happen to be usable.

[Dan Albert]

 

it looks like stagefright should be supported?

from https://android-developers.googleblog.com/2016/06/android-changes-for-ndk-developers.html

$ readelf --dynamic libBroken.so | grep NEEDED
 0x00000001 (NEEDED)                     Shared library: [libnativehelper.so]
 0x00000001 (NEEDED)                     Shared library: [libutils.so]
 0x00000001 (NEEDED)                     Shared library: [libstagefright_foundation.so]
 0x00000001 (NEEDED)                     Shared library: [libmedia_jni.so]
 0x00000001 (NEEDED)                     Shared library: [liblog.so]
 0x00000001 (NEEDED)                     Shared library: [libdl.so]
 0x00000001 (NEEDED)                     Shared library: [libz.so]
 0x00000001 (NEEDED)                     Shared library: [libstdc++.so]
 0x00000001 (NEEDED)                     Shared library: [libm.so]
 0x00000001 (NEEDED)                     Shared library: [libc.so]

That's showing a library that isn't valid (note that it's named libBroken). 

[J Decker]

well; I was hesitant to include that - but since 'c', 'm', 'dl', 'log', etc' are all listed on the supported  API page...I thought maybe it wasn't saying what I thought it was...

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