We don't care _what_ the `sizeof` results are, we just want it to vaporize
the condition's code out of the build. So we check it with a `? 1 : 0`, so it
always boils down to a `sizeof (int)`, no matter what data type the condition
actually is.
This works with bitfields, pointers, anything that can be "truthy." If it
isn't truthy, it would fail when assertions are enabled anyhow.
Fixes#15990.
Now it does _not_ call SDL_SetError(), since that would allocate memory with
the system in a weird state, and setting all four functions to NULL will
restore the original memory functions, as a shortcut vs having to query
SDL_GetOriginalMemoryFunctions() first.
Fixes#15914.
These functions already return immediately for NULL objects in normal builds, but it was done through CHECK_PARAM. When building with SDL_DISABLE_INVALID_PARAMS, these checks were compiled out, and NULL resources could reach backend release functions and cause segfault.
Always return on NULL so API behaves consistently regardless of SDL_DISABLE_INVALID_PARAMS.
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
SDL has no dummy fallback for the RTC functions, and the PS2 implementation is just an empty dummy implementation, so rename it and build it if no system-specific time functionality is found.
