I'm having issues when trying to use the java surface on the native
side. However, when I create the surface on the native side, the media
playback is fine.
The following are the things that I'm doing in my code:
1. Creating a Surface View and getting the Surface from the Surface
Holder from the application layer.
2. Using JNI, pass the Surface Holder object to your native
application.
3. Use this object to obtain Surface object
However, the sufracehandle is null in the JNI. Have anyone faced
similar issues ? Any workarounds or suggestions on how to fix this
issue?
My code would look like:
Player.java:
Class Player
{
Surface mSurface;
private SurfaceView surfaceView;
private SurfaceHolder surfaceHolder;
native void play ();
onCreate ()
{
surfaceView = (SurfaceView)
findViewById(R.id.SurfaceViewRendererSurface);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
/* Populate mSurface object here. */
mSurface = surfaceHolder.getSurface ();
......
play ();
......
}
}
Player.cpp:
.....
.....
struct fields_t {
jfieldID surface;
jfieldID surface_native;
};
static fields_t fields;
static sp<Surface> get_surface(JNIEnv* env, jobject thiz) {
Surface* const p = (Surface*)env->GetIntField(thiz,
fields.surface_native);
return sp<Surface>(p);
}
jint Java_com_test_Media_Media_play (JNIEnv *env, jobject thiz)
{
sp<Surface> nSurfaceHandle;
jobject surface = env->GetObjectField(thiz, fields.surface);
if (surface != NULL) {
const sp<Surface>& native_surface = get_surface(env, surface);
nSurfaceHandle = native_surface;
if (nSurfaceHandle == NULL)
{
LOGE ("ERROR :: Surface Handle NULL");
}
}
return 0;
}
Thanks in advance.
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