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# holoscan::ops::FormatConverterPlaneLayout

> Row pitch and byte range for one color plane in a contiguous device buffer.

Row pitch and byte range for one color plane in a contiguous device buffer.

Used only to pass NPP step sizes and plane base offsets/sizes (same information GXF's `ColorPlane` carries for VideoBuffer layouts). This type avoids a GXF multimedia dependency in the GPU-resident operator API.

```cpp showLineNumbers={false}
#include <holoscan/ops/format_converter_gpu_resident.hpp>
```

---

## Member variables

| Name           | Type       | Description                                                                       |
| -------------- | ---------- | --------------------------------------------------------------------------------- |
| `stride_bytes` | `int32_t`  | Bytes between consecutive rows (NPP `nSrcStep` / plane step).                     |
| `byte_offset`  | `uint32_t` | Byte offset of this plane from the start of the buffer.                           |
| `plane_bytes`  | `uint64_t` | Size of this plane in bytes (for splitting Y/U/V or Y/UV in a single allocation). |