Struct ParallelGeoTiffWriter

pub struct ParallelGeoTiffWriter {
    pub output_path: PathBuf,
    pub geo_transform: GeoTransform,
    pub epsg_code: u32,
    pub total_cols: usize,
    pub total_rows: usize,
    pub n_bands: usize,
    pub dataset: Mutex<Option<Dataset>>,
}

Writer that allows parallel block writes to a pre-created GeoTIFF.

Thread-safe via internal Mutex. The GDAL dataset is opened once and kept alive for the writer’s lifetime. Each write_block() call acquires the Mutex, writes to the appropriate window, and returns.

The dataset is automatically closed when the writer is dropped.

Fields

output_path: PathBuf

Path to the output GeoTIFF file

geo_transform: GeoTransform

Geographic transformation parameters

epsg_code: u32

EPSG coordinate reference system code

total_cols: usize

Total image size in pixels

total_rows: usize

n_bands: usize

Number of bands in the output

dataset: Mutex<Option<Dataset>>

Mutex-guarded cached GDAL dataset (opened on first write)

Implementations

impl ParallelGeoTiffWriter

pub fn new( output_path: PathBuf, geo_transform: GeoTransform, epsg_code: u32, total_cols: usize, total_rows: usize, n_bands: usize, ) -> Self

Creates a new writer for the given output path and parameters.

The dataset is not opened until the first write_block() call.

pub fn build_overviews(&self, resampling: &str, levels: &[i32]) -> Result<()>

Builds overviews on the written GeoTIFF.

This must be called after all write_block() calls are complete. It opens the dataset in update mode and calls GDAL’s build_overviews with GDAL_NUM_THREADS=ALL_CPUS for multithreaded processing.

Arguments

• resampling - Resampling method, e.g. “CUBIC”, “NEAREST”, “AVERAGE”
• levels - Overview decimation factors, e.g. [2, 4, 8, 16, 32]