starting android development

[Chuck Crisler]

Thank you *VERY MUCH* for the help. I suspected that the SDK was old. It
would be helpful if there was a note added to the (real) GStreamer website
to that effect.

On Fri, Mar 20, 2015 at 4:54 AM, Sérgio Agostinho <
sergio.r.agostinho at gmail.com> wrote:

> Hi Chuck,
>
> This might also be useful. I remember I struggled for a while to properly
> build Gstreamer with Android Studio. Place your Android.mk and
> Application.mk inside src/main/jni
> Add these snippets to your local.properties file
>
> android{
>>     //otherstuff
>>     sourceSets.main {
>>         jniLibs.srcDir 'src/main/libs'
>>         jni.srcDirs = [];
>>     }
>>     tasks.withType(JavaCompile) {
>>         compileTask -> compileTask.dependsOn ndkBuild
>>     }
>>     task('ndkBuild', type: Exec) {
>>         // normal building tool
>>         commandLine 'ndk-build', 'clean'
>>         commandLine 'ndk-build', 'APP_PLATFORM=*<replace with target
>> version e.g. android-19>*', '-C', file('src/main').absolutePath
>>     }
>> }
>
>
> This ensures your ndk code will always be compiled before your java code,
> and that the Gstreamer.java will be already in your src folder.
>
> Cheers
>
>
> 2015-03-20 9:41 GMT+01:00 Sebastian Dröge <sebastian at centricular.com>:
>
>> On Do, 2015-03-19 at 22:30 -0400, Chuck Crisler wrote:
>> > I am trying to learn Java and Android development at the same time.
>> > Fortunately, I know GStreamer fairly well. I have the Android Studio,
>> the
>> > SDK and the NDK installed on my Linux system and have downloaded the
>> > GStreamer 1.4.5 ARM v7 binaries. I have also downloaded the GStreamer
>> SDK
>> > and have been looking at ~slomo/gst-sdk-tutorials. I am confused and
>> can't
>> > seem to 'put it all together'. I have read and built and executed (on my
>> > Android phone) some of the pure Android samples, including JNI samples.
>> I
>> > feel that I could convert a GStreamer Android SDK based tutorial to the
>> > Android Studio structure.
>> >
>> > Here are the questions that I immediately don't understand.
>> > 1. Do I need both the 1.4.5 binaries and the GStreamer SDK?
>>
>> The GStreamer 1.4.5 binaries contain everything that the "GStreamer SDK"
>> contains, just 3 years newer.
>>
>> > 2. Do I need to build anything to get started working with the GStreamer
>> > tutorials?
>>
>> You just need to extract the binaries to some please and then set
>> GSTREAMER_ROOT_ANDROID in the environment to that place. Then you can
>> just build them like any other Android project.
>>
>> > 3. Tutorial #1 imports package org.freedesktop.gstreamer.GStreamer,
>> which I
>> > don't think that I have. How should I build it, or where is it?
>>
>> That's autogenerated by ndk-build.
>>
>> > 4. Which tutorials are more current, ~slomo or the GStreamer SDK?
>>
>> See above :)
>>
>> > 5. Is it possible to run something like the command line gst-launch
>> > application on Android to test pipelines and installations?
>>
>> Yes but command line applications don't have access to the hardware
>> codecs and other things, and you need a rooted device.
>>
>> See
>>
>> https://coaxion.net/blog/2014/10/gstreamer-remote-controlled-testing-application-for-android-ios-and-more/
>> for some gst-launch style application for Android/iOS.
>>
>> Also see
>> https://github.com/sdroege/gst-player
>> for some (hopefully) cleaner code (than the tutorials) for how to do
>> GStreamer Android development by properly splitting the backend (C) and
>> the frontend (Java).
>>
>> --
>> Sebastian Dröge, Centricular Ltd · http://www.centricular.com
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>
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>
>


-- 
___________________________________________________
Name
*Chuck Crisler*

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