- Switch GLSurfaceView from RENDERMODE_CONTINUOUSLY to RENDERMODE_WHEN_DIRTY
with OnFrameAvailableListener, halving GPU work
- Add crop-to-fill aspect ratio correction so camera preview is not
stretched on displays with non-16:9 aspect ratios
- Add LifecycleEventObserver to pause/resume GLSurfaceView with Activity
lifecycle, preventing background rendering and GL context issues
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Concurrency & bitmap lifecycle:
- Defer bitmap recycling by one cycle so Compose finishes drawing before
native memory is freed (preview bitmaps, thumbnails)
- Make galleryPreviewSource @Volatile for cross-thread visibility
- Join preview job before recycling source bitmap in cancelGalleryPreview()
to prevent use-after-free during CPU blur loop
- Add @Volatile to TiltShiftRenderer.currentTexCoords (UI/GL thread race)
- Fix error dismiss race with cancellable Job tracking
Lifecycle & resource management:
- Release GL resources via glSurfaceView.queueEvent (must run on GL thread)
- Pause GLSurfaceView when entering gallery preview mode
- Shut down captureExecutor in CameraManager.release() (thread leak)
- Use WeakReference for lifecycleOwnerRef to avoid Activity GC delay
- Fix thumbnail bitmap leak on coroutine cancellation (add to finally)
- Guarantee imageProxy.close() in finally block
Performance:
- Compute gradient mask at 1/4 resolution with bilinear upscale (~93%
less per-pixel trig work, ~75% less mask memory)
- Precompute cos/sin on CPU, pass as uCosAngle/uSinAngle uniforms
(eliminates per-fragment transcendental calls in GLSL)
- Unroll 9-tap Gaussian blur kernel (avoids integer-branched weight
lookup that de-optimizes on mobile GPUs)
- Add 80ms debounce to preview recomputation during slider drags
Silent failure fixes:
- Check bitmap.compress() return value; report error on failure
- Log all loadBitmapFromUri null paths (stream, dimensions, decode)
- Surface preview computation errors and ActivityNotFoundException to user
- Return boolean from writeExifToUri, log at ERROR level
- Wrap gallery preview downscale in try-catch (OOM protection)
Config:
- Add ACCESS_MEDIA_LOCATION permission (GPS EXIF on Android 10+)
- Accept coarse-only location grant for geotags
- Remove dead adjustResize (no effect with edge-to-edge)
- Set windowBackground to black (eliminates white flash on cold start)
- Add values-night theme for dark mode
- Remove overly broad ProGuard keeps (CameraX/GMS ship consumer rules)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace ContextCompat.getMainExecutor with a dedicated single-thread
executor for image capture callbacks. This prevents bitmap decode,
rotation, and tilt-shift effect processing from blocking the UI thread
and causing jank or ANR on slower devices.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Catch SecurityException separately with permission-specific message
- Replace raw e.message with generic user-friendly error strings
- Wrap cameraProviderFuture.get() in try-catch to handle CameraX
initialization failures instead of crashing
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The feature provided no benefit on Pixel 7 Pro — both standard and
hi-res modes produced 12MP images since CameraX's standard resolution
list doesn't include the full sensor output.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add useHighResCapture toggle to CameraManager that switches between
CameraX default resolution and HIGHEST_AVAILABLE_STRATEGY. Default
is off to avoid OOM from processing very large bitmaps (e.g. 50MP).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add an error StateFlow to CameraManager so camera binding failures
are surfaced to the user instead of silently swallowed by
e.printStackTrace(). CameraScreen collects this flow and displays
errors using the existing red overlay UI. Added Log.e with proper
TAG for logcat visibility.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add radial/elliptical blur mode with aspect ratio control
- Add UI sliders for blur intensity, falloff, and shape
- Add front camera support with flip button
- Update minimum SDK to API 35 (Android 15)
- Enable landscape orientation (fullSensor)
- Rename app to "Naiv Tilt Shift Camera"
- Set APK output name to naiv-tilt-shift
- Add project specification document
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
A dedicated camera app for tilt-shift photography with:
- Real-time OpenGL ES 2.0 shader-based blur preview
- Touch gesture controls (drag, rotate, pinch) for adjusting effect
- CameraX integration for camera preview and high-res capture
- EXIF metadata with GPS location support
- MediaStore integration for saving to gallery
- Jetpack Compose UI with haptic feedback
Tech stack: Kotlin, CameraX, OpenGL ES 2.0, Jetpack Compose
Min SDK: 26 (Android 8.0), Target SDK: 35 (Android 15)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
