Safer memory usage and some cleanups#30
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Validate image dimensions/channel counts before allocation and fail fast on invalid inputs. Add checked size arithmetic to prevent overflow when computing buffer sizes. Return consistent error/null paths to avoid partial allocation states and reduce OOB/memory-corruption risk. Signed-off-by: Ozan Durgut <ozandurgut.2001@hotmail.com>
Use matching allocator/free pairs across wrapper boundaries to prevent cross-heap frees. Add null checks around image accessors and wrapper entry points, returning safe defaults/errors instead of dereferencing invalid pointers. This stabilizes wrapper behavior under failed/optional allocations. Signed-off-by: Ozan Durgut <ozandurgut.2001@hotmail.com>
Normalize resize return/status handling so failures are propagated correctly. Replace unchecked copy/size-multiply paths with overflow-checked arithmetic and bounded copies. This prevents silent truncation, invalid buffer sizing, and potential memory safety issues in resize flows. Signed-off-by: Ozan Durgut <ozandurgut.2001@hotmail.com>
Add explicit precondition checks before DMA/UART transfers (non-null handles and buffers, valid length, ready state). Reject invalid transfer requests early and return deterministic errors instead of invoking HAL with bad state. Signed-off-by: Ozan Durgut <ozandurgut.2001@hotmail.com>
Ensure realloc copy logic only copies the valid overlap region and never reads past the old allocation. Preserve original buffer on allocation failure and avoid state loss/leaks on error paths. Signed-off-by: Ozan Durgut <ozandurgut.2001@hotmail.com>
Replace legacy GPIO speed definitions with the current STM32 HAL GPIO speed frequency macros. - GPIO_SPEED_FAST -> GPIO_SPEED_FREQ_HIGH - GPIO_SPEED_HIGH -> GPIO_SPEED_FREQ_VERY_HIGH Signed-off-by: Ozan Durgut <ozndrgt@gmail.com>
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