I find the folder in android source code: frameworks\base\media\jni
I think thats the one you want. you can use the code as sample.
For example, the code below defined all the methods of class
MediaPlayer:
static JNINativeMethod gMethods[] = {
{"setDataSource", "(Ljava/lang/String;)V", (void
*)android_media_MediaPlayer_setDataSource},
{"setDataSource", "(Ljava/io/FileDescriptor;JJ)V", (void
*)android_media_MediaPlayer_setDataSourceFD},
{"prepare", "()V", (void
*)android_media_MediaPlayer_prepare},
{"prepareAsync", "()V", (void
*)android_media_MediaPlayer_prepareAsync},
{"_start", "()V", (void
*)android_media_MediaPlayer_start},
{"_stop", "()V", (void
*)android_media_MediaPlayer_stop},
{"getVideoWidth", "()I", (void
*)android_media_MediaPlayer_getVideoWidth},
{"getVideoHeight", "()I", (void
*)android_media_MediaPlayer_getVideoHeight},
{"seekTo", "(I)V", (void
*)android_media_MediaPlayer_seekTo},
{"_pause", "()V", (void
*)android_media_MediaPlayer_pause},
{"isPlaying", "()Z", (void
*)android_media_MediaPlayer_isPlaying},
{"getCurrentPosition", "()I", (void
*)android_media_MediaPlayer_getCurrentPosition},
{"getDuration", "()I", (void
*)android_media_MediaPlayer_getDuration},
{"_release", "()V", (void
*)android_media_MediaPlayer_release},
{"_reset", "()V", (void
*)android_media_MediaPlayer_reset},
{"setAudioStreamType", "(I)V", (void
*)android_media_MediaPlayer_setAudioStreamType},
{"setLooping", "(Z)V", (void
*)android_media_MediaPlayer_setLooping},
{"isLooping", "()Z", (void
*)android_media_MediaPlayer_isLooping},
{"setVolume", "(FF)V", (void
*)android_media_MediaPlayer_setVolume},
{"getFrameAt", "(I)Landroid/graphics/Bitmap;", (void
*)android_media_MediaPlayer_getFrameAt},
{"native_setup", "(Ljava/lang/Object;)V", (void
*)android_media_MediaPlayer_native_setup},
{"native_finalize", "()V", (void
*)android_media_MediaPlayer_native_finalize},
};
On 2月4日, 上午10时27分, "Jerry Yang" <[email protected]> wrote:
> Hi, all
>
> Does anyone have any information about using the external C written lib?
>
> I have a C lib(no user interface, can be compiled like dll or lib) that
> need to be used in the app, but I cannot find any document in android
> SDK about how to use the external lib.
>
> My idea is: I should cross-compile the lib with arm based detain GCC and
> use the interface to Android app. Any one has any document or example
> about this?
>
> Appreciate for your help!
>
> With best wishes
>
> Jerry Yang
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