Allow Android embedders to use SDL without the full video/audio Java
layer by gating subsystem-specific code behind SDL_VIDEO_DISABLED and
SDL_AUDIO_DISABLED preprocessor flags.
This enables applications that only need joystick/gamepad support
(e.g. Qt-based apps like QGroundControl) to build SDL without shipping
stub Java classes for unused subsystems.
Changes:
- Split SDLActivity JNI method table into core (lifecycle, hints,
permissions) and video (surface, input, clipboard, orientation)
- Gate SDLAudioManager and SDLInputConnection JNI registration
- Make checkJNIReady() subsystem-aware: no longer requires
mAudioManagerClass when SDL_AUDIO_DISABLED
- Group method ID resolution by subsystem in nativeSetupJNI()
- Guard all video/audio function implementations and declarations
- Keep display orientation accessors always available (needed by camera)
- Add subsystem-selective SDL.setupJNI(int)/initialize(int) to SDL.java
with backwards-compatible zero-arg overloads
- Guard SDL_VIDEO_DRIVER_ANDROID and related defines in
SDL_build_config_android.h
If we lose focus during startup, we need to unlock the activity mutex before waiting for the focus lifecycle event, otherwise it will never be delivered.
Reproduced using testcontroller with a DualSense controller attached and the "Allow the app to access the USB device?" dialog popped up.
This fixes a deadlock when a call comes in from Java that takes the activity lock and then tries to send an event, which takes the event lock, at the same time the application thread takes the event lock and then calls SDL_RequestAndroidPermission(), which takes the activity lock.
Fixes https://github.com/libsdl-org/SDL/issues/15772
Fixes https://github.com/libsdl-org/SDL/issues/15771
That also covers removal of the call `SDLActivity.onNativeAccel`,
plus a change of comment under SDL_android.c.
Definitions were previously used while an accelerometer could be listed as a joystick.
This would make `SDL_EnumerateDirectory("assets://")` fail.
We check for empty strings at the higher level already, before we strip out
the "assets://" prefix to pass through the tree.
The AAssetManager won't supply this information to us, but it's just a zip
file, so we can read its central directory ourselves. We can still use
AAssetManager for file i/o to the APK's assets, so we don't have to deal with
compression and other zipfile features.
Fixes#15220.
Reference Issue #15347.
fix 'JVM object referenced by 'context' is of type 'Context' and it does not have access to method 'registerReceiver(BroadcastReceiver, IntentFilter)' declared in class 'ContextWrapper'.'
This now relies on the implementation to set these flags on short reads/writes
instead of the higher level checking if SDL_SetError() was called.
Additionally (and crucially), this now sets ERROR or EOF on all short reads,
across all backends, not just when we get a zero-byte return value.
Fixes#13720.
This specifically affects SDL_EnumerateDirectory and SDL_GetPathInfo. Android
assets are read-only, so no need to do this for things like
SDL_CreateDirectory, etc, and the POSIX SDL_CopyFile() uses SDL_IOStream
behind the scenes, which already supports Android assets.
Fixes#13050.
This hint needs to persist outside of the normal application flow, so use the environment to set the initial value, and then save the value set via SDL_SetHint() after that.
Fixes https://github.com/libsdl-org/SDL/issues/12677
This was originally intended to make sure that nativeAllowRecreateActivity() could be called from another thread safely, but the hint system is now thread-safe, so we don't need to use a callback here.
Fixes https://github.com/libsdl-org/SDL/issues/11938
