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Android: native_window validity is guaranteed between surfaceCreated and Destroyed 

It's currently still available after surfaceDestroyed().
And available (but invalid) between surfaceCreated() and surfaceChanged().

Which means ANativewindow_getWidth/Height/Format() fail in those cases.

https://developer.android.com/reference/android/view/SurfaceHolder.html#getSurface()
This commit is contained in:
Sylvain Becker 2019-01-09 22:41:52 +01:00
parent 1803944bb2
commit 68c0e69f0a
2 changed files with 29 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
View File

@ -737,6 +737,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
float y, float p);
public static native void onNativeAccel(float x, float y, float z);
public static native void onNativeClipboardChanged();
public static native void onNativeSurfaceCreated();
public static native void onNativeSurfaceChanged();
public static native void onNativeSurfaceDestroyed();
public static native String nativeGetHint(String name);
@ -1574,6 +1575,7 @@ class SDLSurface extends SurfaceView implements SurfaceHolder.Callback,
@Override
public void surfaceCreated(SurfaceHolder holder) {
Log.v("SDL", "surfaceCreated()");
SDLActivity.onNativeSurfaceCreated();
}
// Called when we lose the surface

33
src/core/android/SDL_android.c
View File

@ -83,6 +83,9 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeResize)(
jint surfaceWidth, jint surfaceHeight,
jint deviceWidth, jint deviceHeight, jint format, jfloat rate);
JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceCreated)(
JNIEnv *env, jclass jcls);
JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceChanged)(
JNIEnv *env, jclass jcls);
@ -661,8 +664,25 @@ JNIEXPORT jint JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeRemoveHaptic)(
return Android_RemoveHaptic(device_id);
}
/* Called from surfaceCreated() */
JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceCreated)(JNIEnv *env, jclass jcls)
{
SDL_LockMutex(Android_ActivityMutex);
/* Surface Created */
if (Android_Window && Android_Window->driverdata)
{
SDL_WindowData *data = (SDL_WindowData *) Android_Window->driverdata;
data->native_window = Android_JNI_GetNativeWindow();
if (data->native_window == NULL) {
SDL_SetError("Could not fetch native window from UI thread");
}
}
SDL_UnlockMutex(Android_ActivityMutex);
}
/* Called from surfaceChanged() */
JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceChanged)(JNIEnv *env, jclass jcls)
{
SDL_LockMutex(Android_ActivityMutex);
@ -674,10 +694,6 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceChanged)(JNIEnv *env, j
/* If the surface has been previously destroyed by onNativeSurfaceDestroyed, recreate it here */
if (data->egl_surface == EGL_NO_SURFACE) {
if (data->native_window) {
ANativeWindow_release(data->native_window);
}
data->native_window = Android_JNI_GetNativeWindow();
data->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType) data->native_window);
}
@ -687,7 +703,7 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceChanged)(JNIEnv *env, j
SDL_UnlockMutex(Android_ActivityMutex);
}
/* Surface Destroyed */
/* Called from surfaceDestroyed() */
JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceDestroyed)(JNIEnv *env, jclass jcls)
{
SDL_LockMutex(Android_ActivityMutex);
@ -708,6 +724,11 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeSurfaceDestroyed)(JNIEnv *env,
data->egl_surface = EGL_NO_SURFACE;
}
if (data->native_window) {
ANativeWindow_release(data->native_window);
}
data->native_window = NULL;
/* GL Context handling is done in the event loop because this function is run from the Java thread */
}