7006568925

Committed 27 Nov 2023 02:07PM UTC coverage: 89.651% (+0.2%) from 89.498%

Build # 7006568925

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Commit Message

Merge pull request #888 from geo-engine/raster_stacks

raster stacking

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/operators/src/processing/raster_scaling.rs

use crate::engine::{
    CanonicOperatorName, ExecutionContext, InitializedRasterOperator, InitializedSources, Operator,
    OperatorName, RasterBandDescriptor, RasterBandDescriptors, RasterOperator,
    RasterQueryProcessor, RasterResultDescriptor, SingleRasterSource, TypedRasterQueryProcessor,
    WorkflowOperatorPath,
};
use crate::util::Result;
use async_trait::async_trait;
use futures::{StreamExt, TryStreamExt};

use geoengine_datatypes::raster::{
    CheckedMulThenAddTransformation, CheckedSubThenDivTransformation, ElementScaling,
    ScalingTransformation,
};
use geoengine_datatypes::{
    primitives::Measurement,
    raster::{Pixel, RasterPropertiesKey, RasterTile2D},
};
use num::FromPrimitive;
use num_traits::AsPrimitive;
use rayon::ThreadPool;
use serde::{Deserialize, Serialize};
use snafu::ensure;
use std::marker::PhantomData;
use std::sync::Arc;

#[derive(Debug, Serialize, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct RasterScalingParams {
    slope: SlopeOffsetSelection,
    offset: SlopeOffsetSelection,
    output_measurement: Option<Measurement>,
    scaling_mode: ScalingMode,
}

#[derive(Debug, Serialize, Deserialize, Clone, Copy)]
#[serde(rename_all = "camelCase")]
pub enum ScalingMode {
    MulSlopeAddOffset,
    SubOffsetDivSlope,
}

#[derive(Debug, Serialize, Deserialize, Clone)]
#[serde(rename_all = "camelCase", tag = "type")]
enum SlopeOffsetSelection {
    Auto,
    MetadataKey(RasterPropertiesKey),
    Constant { value: f64 },
}

impl Default for SlopeOffsetSelection {
    fn default() -> Self {
        Self::Auto
    }
}

/// The raster scaling operator scales/unscales the values of a raster by a given scale factor and offset.
/// This is done by applying the following formulas to every pixel.
/// For unscaling the formula is:
///
/// `p_new = p_old * slope + offset`
///
/// For scaling the formula is:
///
/// `p_new = (p_old - offset) / slope`
///
/// `p_old` and `p_new` refer to the old and new pixel values,
/// The slope and offset values are either properties attached to the input raster or a fixed value.
///
/// An example for Meteosat Second Generation properties is:
///
/// - offset: `msg.calibration_offset`
/// - slope: `msg.calibration_slope`
pub type RasterScaling = Operator<RasterScalingParams, SingleRasterSource>;

impl OperatorName for RasterScaling {
    const TYPE_NAME: &'static str = "RasterScaling";
}

pub struct InitializedRasterScalingOperator {
    name: CanonicOperatorName,
    slope: SlopeOffsetSelection,
    offset: SlopeOffsetSelection,
    result_descriptor: RasterResultDescriptor,
    source: Box<dyn InitializedRasterOperator>,
    scaling_mode: ScalingMode,
}

#[typetag::serde]
#[async_trait]
impl RasterOperator for RasterScaling {
    async fn _initialize(
        self: Box<Self>,
        path: WorkflowOperatorPath,
        context: &dyn ExecutionContext,
    ) -> Result<Box<dyn InitializedRasterOperator>> {
        let name = CanonicOperatorName::from(&self);

        let input = self.sources.initialize_sources(path, context).await?;
        let in_desc = input.raster.result_descriptor();

        // TODO: implement multi-band functionality and remove this check
        ensure!(
            in_desc.bands.len() == 1,
            crate::error::OperatorDoesNotSupportMultiBandsSourcesYet {
                operator: RasterScaling::TYPE_NAME
            }
        );

        let out_desc = RasterResultDescriptor {
            spatial_reference: in_desc.spatial_reference,
            data_type: in_desc.data_type,

            bbox: in_desc.bbox,
            time: in_desc.time,
            resolution: in_desc.resolution,
            bands: RasterBandDescriptors::new(vec![RasterBandDescriptor::new(
                in_desc.bands[0].name.clone(),
                self.params
                    .output_measurement
                    .unwrap_or_else(|| in_desc.bands[0].measurement.clone()),
            )])?,
        };

        let initialized_operator = InitializedRasterScalingOperator {
            name,
            slope: self.params.slope,
            offset: self.params.offset,
            result_descriptor: out_desc,
            source: input.raster,
            scaling_mode: self.params.scaling_mode,
        };

        Ok(initialized_operator.boxed())
    }

    span_fn!(RasterScaling);
}

impl InitializedRasterOperator for InitializedRasterScalingOperator {
    fn result_descriptor(&self) -> &RasterResultDescriptor {
        &self.result_descriptor
    }

    fn query_processor(&self) -> Result<TypedRasterQueryProcessor> {
        let slope = self.slope.clone();
        let offset = self.offset.clone();
        let source = self.source.query_processor()?;
        let scaling_mode = self.scaling_mode;

        let res = match scaling_mode {
            ScalingMode::SubOffsetDivSlope => {
                call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, CheckedSubThenDivTransformation>(slope, offset,  source_proc)) })
            }
            ScalingMode::MulSlopeAddOffset => {
                call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, CheckedMulThenAddTransformation>(slope, offset,  source_proc)) })
            }
        };

        Ok(res)
    }

    fn canonic_name(&self) -> CanonicOperatorName {
        self.name.clone()
    }
}

struct RasterTransformationProcessor<Q, P, S>
where
    Q: RasterQueryProcessor<RasterType = P>,
{
    source: Q,
    slope: SlopeOffsetSelection,
    offset: SlopeOffsetSelection,
    _transformation: PhantomData<S>,
}

fn create_boxed_processor<Q, P, S>(
    slope: SlopeOffsetSelection,
    offset: SlopeOffsetSelection,
    source: Q,
) -> Box<dyn RasterQueryProcessor<RasterType = P>>
where
    Q: RasterQueryProcessor<RasterType = P> + 'static,
    P: Pixel + FromPrimitive + 'static + Default,
    f64: AsPrimitive<P>,
    S: Send + Sync + 'static + ScalingTransformation<P>,
{
    RasterTransformationProcessor::<Q, P, S>::create(slope, offset, source).boxed()
}

impl<Q, P, S> RasterTransformationProcessor<Q, P, S>
where
    Q: RasterQueryProcessor<RasterType = P> + 'static,
    P: Pixel + FromPrimitive + 'static + Default,
    f64: AsPrimitive<P>,
    S: Send + Sync + 'static + ScalingTransformation<P>,
{
    pub fn create(
        slope: SlopeOffsetSelection,
        offset: SlopeOffsetSelection,
        source: Q,
    ) -> RasterTransformationProcessor<Q, P, S> {
        RasterTransformationProcessor {
            source,
            slope,
            offset,
            _transformation: PhantomData,
        }
    }

    async fn scale_tile_async(
        &self,
        tile: RasterTile2D<P>,
        _pool: Arc<ThreadPool>,
    ) -> Result<RasterTile2D<P>> {
        // either use the provided metadata/constant or the default values from the properties
        let offset = match &self.offset {
            SlopeOffsetSelection::MetadataKey(key) => tile.properties.number_property::<P>(key)?,
            SlopeOffsetSelection::Constant { value } => value.as_(),
            SlopeOffsetSelection::Auto => tile.properties.offset().as_(),
        };

        let slope = match &self.slope {
            SlopeOffsetSelection::MetadataKey(key) => tile.properties.number_property::<P>(key)?,
            SlopeOffsetSelection::Constant { value } => value.as_(),
            SlopeOffsetSelection::Auto => tile.properties.scale().as_(),
        };

        let res_tile =
            crate::util::spawn_blocking(move || tile.transform_elements::<S>(slope, offset))
                .await?;

        Ok(res_tile)
    }
}

#[async_trait]
impl<Q, P, S> RasterQueryProcessor for RasterTransformationProcessor<Q, P, S>
where
    P: Pixel + FromPrimitive + 'static + Default,
    f64: AsPrimitive<P>,
    Q: RasterQueryProcessor<RasterType = P> + 'static,
    S: Send + Sync + 'static + ScalingTransformation<P>,
{
    type RasterType = P;

    async fn raster_query<'a>(
        &'a self,
        query: geoengine_datatypes::primitives::RasterQueryRectangle,
        ctx: &'a dyn crate::engine::QueryContext,
    ) -> Result<
        futures::stream::BoxStream<
            'a,
            Result<geoengine_datatypes::raster::RasterTile2D<Self::RasterType>>,
        >,
    > {
        let src = self.source.raster_query(query, ctx).await?;
        let rs = src.and_then(move |tile| self.scale_tile_async(tile, ctx.thread_pool().clone()));
        Ok(rs.boxed())
    }
}

#[cfg(test)]
mod tests {

    use geoengine_datatypes::{
        primitives::{
            BandSelection, CacheHint, SpatialPartition2D, SpatialResolution, TimeInterval,
        },
        raster::{
            Grid2D, GridOrEmpty2D, GridShape, MaskedGrid2D, RasterDataType, RasterProperties,
            TileInformation, TilingSpecification,
        },
        spatial_reference::SpatialReference,
        util::test::TestDefault,
    };

    use crate::{
        engine::{ChunkByteSize, MockExecutionContext},
        mock::{MockRasterSource, MockRasterSourceParams},
    };

    use super::*;

    #[tokio::test]
    async fn test_unscale() {
        let grid_shape = [2, 2].into();

        let tiling_specification = TilingSpecification {
            origin_coordinate: [0.0, 0.0].into(),
            tile_size_in_pixels: grid_shape,
        };

        let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![7_u8, 7, 7, 6]).unwrap());

        let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);
        let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());

        let mut raster_props = RasterProperties::default();
        raster_props.set_scale(2.0);
        raster_props.set_offset(1.0);

        let raster_tile = RasterTile2D::new_with_tile_info_and_properties(
            TimeInterval::default(),
            TileInformation {
                global_geo_transform: TestDefault::test_default(),
                global_tile_position: [0, 0].into(),
                tile_size_in_pixels: grid_shape,
            },
            0,
            raster.into(),
            raster_props,
            CacheHint::default(),
        );

        let spatial_resolution = raster_tile.spatial_resolution();

        let mrs = MockRasterSource {
            params: MockRasterSourceParams {
                data: vec![raster_tile],
                result_descriptor: RasterResultDescriptor {
                    data_type: RasterDataType::U8,
                    spatial_reference: SpatialReference::epsg_4326().into(),
                    bbox: None,
                    time: None,
                    resolution: Some(spatial_resolution),
                    bands: RasterBandDescriptors::new_single_band(),
                },
            },
        }
        .boxed();

        let scaling_mode = ScalingMode::MulSlopeAddOffset;

        let output_measurement = None;

        let op = RasterScaling {
            params: RasterScalingParams {
                slope: SlopeOffsetSelection::Auto,
                offset: SlopeOffsetSelection::Auto,
                output_measurement,
                scaling_mode,
            },
            sources: SingleRasterSource { raster: mrs },
        }
        .boxed();

        let initialized_op = op
            .initialize(WorkflowOperatorPath::initialize_root(), &ctx)
            .await
            .unwrap();

        let result_descriptor = initialized_op.result_descriptor();

        assert_eq!(result_descriptor.data_type, RasterDataType::U8);
        assert_eq!(
            result_descriptor.bands[0].measurement,
            Measurement::Unitless
        );

        let query_processor = initialized_op.query_processor().unwrap();

        let query = geoengine_datatypes::primitives::RasterQueryRectangle {
            spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),
            spatial_resolution: SpatialResolution::one(),
            time_interval: TimeInterval::default(),
            attributes: BandSelection::first(),
        };

        let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {
            panic!("expected TypedRasterQueryProcessor::U8");
        };

        let stream = typed_processor
            .raster_query(query, &query_ctx)
            .await
            .unwrap();

        let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;

        let result_tile = results.as_slice()[0].as_ref().unwrap();

        let result_grid = result_tile.grid_array.clone();

        match result_grid {
            GridOrEmpty2D::Grid(grid) => {
                assert_eq!(grid.shape(), &GridShape::new([2, 2]));

                let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();

                let expected = vec![Some(15), Some(15), Some(15), Some(13)];

                assert_eq!(res, expected);
            }
            GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),
        }
    }

    #[tokio::test]
    async fn test_scale() {
        let grid_shape = [2, 2].into();

        let tiling_specification = TilingSpecification {
            origin_coordinate: [0.0, 0.0].into(),
            tile_size_in_pixels: grid_shape,
        };

        let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![15_u8, 15, 15, 13]).unwrap());

        let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);
        let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());

        let mut raster_props = RasterProperties::default();
        raster_props.set_scale(2.0);
        raster_props.set_offset(1.0);

        let raster_tile = RasterTile2D::new_with_tile_info_and_properties(
            TimeInterval::default(),
            TileInformation {
                global_geo_transform: TestDefault::test_default(),
                global_tile_position: [0, 0].into(),
                tile_size_in_pixels: grid_shape,
            },
            0,
            raster.into(),
            raster_props,
            CacheHint::default(),
        );

        let spatial_resolution = raster_tile.spatial_resolution();

        let mrs = MockRasterSource {
            params: MockRasterSourceParams {
                data: vec![raster_tile],
                result_descriptor: RasterResultDescriptor {
                    data_type: RasterDataType::U8,
                    spatial_reference: SpatialReference::epsg_4326().into(),
                    bbox: None,
                    time: None,
                    resolution: Some(spatial_resolution),
                    bands: RasterBandDescriptors::new_single_band(),
                },
            },
        }
        .boxed();

        let scaling_mode = ScalingMode::SubOffsetDivSlope;

        let output_measurement = None;

        let params = RasterScalingParams {
            slope: SlopeOffsetSelection::Auto,
            offset: SlopeOffsetSelection::Auto,
            output_measurement,
            scaling_mode,
        };

        let op = RasterScaling {
            params,
            sources: SingleRasterSource { raster: mrs },
        }
        .boxed();

        let initialized_op = op
            .initialize(WorkflowOperatorPath::initialize_root(), &ctx)
            .await
            .unwrap();

        let result_descriptor = initialized_op.result_descriptor();

        assert_eq!(result_descriptor.data_type, RasterDataType::U8);
        assert_eq!(
            result_descriptor.bands[0].measurement,
            Measurement::Unitless
        );

        let query_processor = initialized_op.query_processor().unwrap();

        let query = geoengine_datatypes::primitives::RasterQueryRectangle {
            spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),
            spatial_resolution: SpatialResolution::one(),
            time_interval: TimeInterval::default(),
            attributes: BandSelection::first(),
        };

        let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {
            panic!("expected TypedRasterQueryProcessor::U8");
        };

        let stream = typed_processor
            .raster_query(query, &query_ctx)
            .await
            .unwrap();

        let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;

        let result_tile = results.as_slice()[0].as_ref().unwrap();

        let result_grid = result_tile.grid_array.clone();

        match result_grid {
            GridOrEmpty2D::Grid(grid) => {
                assert_eq!(grid.shape(), &GridShape::new([2, 2]));

                let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();

                let expected = vec![Some(7), Some(7), Some(7), Some(6)];

                assert_eq!(res, expected);
            }
            GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),
        }
    }
}

1	use crate::engine::{
2	CanonicOperatorName, ExecutionContext, InitializedRasterOperator, InitializedSources, Operator,
3	OperatorName, RasterBandDescriptor, RasterBandDescriptors, RasterOperator,
4	RasterQueryProcessor, RasterResultDescriptor, SingleRasterSource, TypedRasterQueryProcessor,
5	WorkflowOperatorPath,
6	};
7	use crate::util::Result;
8	use async_trait::async_trait;
9	use futures::{StreamExt, TryStreamExt};
10
11	use geoengine_datatypes::raster::{
12	CheckedMulThenAddTransformation, CheckedSubThenDivTransformation, ElementScaling,
13	ScalingTransformation,
14	};
15	use geoengine_datatypes::{
16	primitives::Measurement,
17	raster::{Pixel, RasterPropertiesKey, RasterTile2D},
18	};
19	use num::FromPrimitive;
20	use num_traits::AsPrimitive;
21	use rayon::ThreadPool;
22	use serde::{Deserialize, Serialize};
23	use snafu::ensure;
24	use std::marker::PhantomData;
25	use std::sync::Arc;
26
27	#[derive(Debug, Serialize, Deserialize, Clone)]	2✔
28	#[serde(rename_all = "camelCase")]
29	pub struct RasterScalingParams {
30	slope: SlopeOffsetSelection,
31	offset: SlopeOffsetSelection,
32	output_measurement: Option<Measurement>,
33	scaling_mode: ScalingMode,
34	}
35
36	#[derive(Debug, Serialize, Deserialize, Clone, Copy)]	2✔
37	#[serde(rename_all = "camelCase")]
38	pub enum ScalingMode {
39	MulSlopeAddOffset,
40	SubOffsetDivSlope,
41	}
42
43	#[derive(Debug, Serialize, Deserialize, Clone)]	4✔
44	#[serde(rename_all = "camelCase", tag = "type")]
45	enum SlopeOffsetSelection {
46	Auto,
47	MetadataKey(RasterPropertiesKey),
48	Constant { value: f64 },
49	}
50
51	impl Default for SlopeOffsetSelection {
52	fn default() -> Self {	×
53	Self::Auto	×
54	}	×
55	}
56
57	/// The raster scaling operator scales/unscales the values of a raster by a given scale factor and offset.
58	/// This is done by applying the following formulas to every pixel.
59	/// For unscaling the formula is:
60	///
61	/// `p_new = p_old * slope + offset`
62	///
63	/// For scaling the formula is:
64	///
65	/// `p_new = (p_old - offset) / slope`
66	///
67	/// `p_old` and `p_new` refer to the old and new pixel values,
68	/// The slope and offset values are either properties attached to the input raster or a fixed value.
69	///
70	/// An example for Meteosat Second Generation properties is:
71	///
72	/// - offset: `msg.calibration_offset`
73	/// - slope: `msg.calibration_slope`
74	pub type RasterScaling = Operator<RasterScalingParams, SingleRasterSource>;
75
76	impl OperatorName for RasterScaling {
77	const TYPE_NAME: &'static str = "RasterScaling";
78	}
79
80	pub struct InitializedRasterScalingOperator {
81	name: CanonicOperatorName,
82	slope: SlopeOffsetSelection,
83	offset: SlopeOffsetSelection,
84	result_descriptor: RasterResultDescriptor,
85	source: Box<dyn InitializedRasterOperator>,
86	scaling_mode: ScalingMode,
87	}
88
89	#[typetag::serde]	×
90	#[async_trait]
91	impl RasterOperator for RasterScaling {
92	async fn _initialize(	2✔
93	self: Box<Self>,	2✔
94	path: WorkflowOperatorPath,	2✔
95	context: &dyn ExecutionContext,	2✔
96	) -> Result<Box<dyn InitializedRasterOperator>> {	2✔
97	let name = CanonicOperatorName::from(&self);	2✔
98
99	let input = self.sources.initialize_sources(path, context).await?;	2✔
100	let in_desc = input.raster.result_descriptor();	2✔
101		2✔
102	// TODO: implement multi-band functionality and remove this check	2✔
103	ensure!(	2✔
104	in_desc.bands.len() == 1,	2✔
NEW 105	crate::error::OperatorDoesNotSupportMultiBandsSourcesYet {	×
NEW 106	operator: RasterScaling::TYPE_NAME	×
NEW 107	}	×
108	);
109
110	let out_desc = RasterResultDescriptor {	2✔
111	spatial_reference: in_desc.spatial_reference,	2✔
112	data_type: in_desc.data_type,	2✔
113		2✔
114	bbox: in_desc.bbox,	2✔
115	time: in_desc.time,	2✔
116	resolution: in_desc.resolution,	2✔
117	bands: RasterBandDescriptors::new(vec![RasterBandDescriptor::new(	2✔
118	in_desc.bands[0].name.clone(),	2✔
119	self.params	2✔
120	.output_measurement	2✔
121	.unwrap_or_else(\|\| in_desc.bands[0].measurement.clone()),	2✔
122	)])?,	2✔
123	};
124
125	let initialized_operator = InitializedRasterScalingOperator {	2✔
126	name,	2✔
127	slope: self.params.slope,	2✔
128	offset: self.params.offset,	2✔
129	result_descriptor: out_desc,	2✔
130	source: input.raster,	2✔
131	scaling_mode: self.params.scaling_mode,	2✔
132	};	2✔
133		2✔
134	Ok(initialized_operator.boxed())	2✔
135	}	4✔
136
137	span_fn!(RasterScaling);	×
138	}
139
140	impl InitializedRasterOperator for InitializedRasterScalingOperator {
141	fn result_descriptor(&self) -> &RasterResultDescriptor {	2✔
142	&self.result_descriptor	2✔
143	}	2✔
144
145	fn query_processor(&self) -> Result<TypedRasterQueryProcessor> {	2✔
146	let slope = self.slope.clone();	2✔
147	let offset = self.offset.clone();	2✔
148	let source = self.source.query_processor()?;	2✔
149	let scaling_mode = self.scaling_mode;	2✔
150
151	let res = match scaling_mode {	2✔
152	ScalingMode::SubOffsetDivSlope => {
153	call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, CheckedSubThenDivTransformation>(slope, offset, source_proc)) })	1✔
154	}
155	ScalingMode::MulSlopeAddOffset => {
156	call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, CheckedMulThenAddTransformation>(slope, offset, source_proc)) })	1✔
157	}
158	};
159
160	Ok(res)	2✔
161	}	2✔
162
163	fn canonic_name(&self) -> CanonicOperatorName {	×
164	self.name.clone()	×
165	}	×
166	}
167
168	struct RasterTransformationProcessor<Q, P, S>
169	where
170	Q: RasterQueryProcessor<RasterType = P>,
171	{
172	source: Q,
173	slope: SlopeOffsetSelection,
174	offset: SlopeOffsetSelection,
175	_transformation: PhantomData<S>,
176	}
177
178	fn create_boxed_processor<Q, P, S>(	2✔
179	slope: SlopeOffsetSelection,	2✔
180	offset: SlopeOffsetSelection,	2✔
181	source: Q,	2✔
182	) -> Box<dyn RasterQueryProcessor<RasterType = P>>	2✔
183	where	2✔
184	Q: RasterQueryProcessor<RasterType = P> + 'static,	2✔
185	P: Pixel + FromPrimitive + 'static + Default,	2✔
186	f64: AsPrimitive<P>,	2✔
187	S: Send + Sync + 'static + ScalingTransformation<P>,	2✔
188	{	2✔
189	RasterTransformationProcessor::<Q, P, S>::create(slope, offset, source).boxed()	2✔
190	}	2✔
191
192	impl<Q, P, S> RasterTransformationProcessor<Q, P, S>
193	where
194	Q: RasterQueryProcessor<RasterType = P> + 'static,
195	P: Pixel + FromPrimitive + 'static + Default,
196	f64: AsPrimitive<P>,
197	S: Send + Sync + 'static + ScalingTransformation<P>,
198	{
199	pub fn create(	2✔
200	slope: SlopeOffsetSelection,	2✔
201	offset: SlopeOffsetSelection,	2✔
202	source: Q,	2✔
203	) -> RasterTransformationProcessor<Q, P, S> {	2✔
204	RasterTransformationProcessor {	2✔
205	source,	2✔
206	slope,	2✔
207	offset,	2✔
208	_transformation: PhantomData,	2✔
209	}	2✔
210	}	2✔
211
212	async fn scale_tile_async(	2✔
213	&self,	2✔
214	tile: RasterTile2D<P>,	2✔
215	_pool: Arc<ThreadPool>,	2✔
216	) -> Result<RasterTile2D<P>> {	2✔
217	// either use the provided metadata/constant or the default values from the properties
218	let offset = match &self.offset {	2✔
219	SlopeOffsetSelection::MetadataKey(key) => tile.properties.number_property::<P>(key)?,	×
220	SlopeOffsetSelection::Constant { value } => value.as_(),	×
221	SlopeOffsetSelection::Auto => tile.properties.offset().as_(),	2✔
222	};
223
224	let slope = match &self.slope {	2✔
225	SlopeOffsetSelection::MetadataKey(key) => tile.properties.number_property::<P>(key)?,	×
226	SlopeOffsetSelection::Constant { value } => value.as_(),	×
227	SlopeOffsetSelection::Auto => tile.properties.scale().as_(),	2✔
228	};
229
230	let res_tile =	2✔
231	crate::util::spawn_blocking(move \|\| tile.transform_elements::<S>(slope, offset))	2✔
232	.await?;	2✔
233
234	Ok(res_tile)	2✔
235	}	2✔
236	}
237
238	#[async_trait]
239	impl<Q, P, S> RasterQueryProcessor for RasterTransformationProcessor<Q, P, S>
240	where
241	P: Pixel + FromPrimitive + 'static + Default,
242	f64: AsPrimitive<P>,
243	Q: RasterQueryProcessor<RasterType = P> + 'static,
244	S: Send + Sync + 'static + ScalingTransformation<P>,
245	{
246	type RasterType = P;
247
248	async fn raster_query<'a>(	2✔
249	&'a self,	2✔
250	query: geoengine_datatypes::primitives::RasterQueryRectangle,	2✔
251	ctx: &'a dyn crate::engine::QueryContext,	2✔
252	) -> Result<	2✔
253	futures::stream::BoxStream<	2✔
254	'a,	2✔
255	Result<geoengine_datatypes::raster::RasterTile2D<Self::RasterType>>,	2✔
256	>,	2✔
257	> {	2✔
258	let src = self.source.raster_query(query, ctx).await?;	2✔
259	let rs = src.and_then(move \|tile\| self.scale_tile_async(tile, ctx.thread_pool().clone()));	2✔
260	Ok(rs.boxed())	2✔
261	}	4✔
262	}
263
264	#[cfg(test)]
265	mod tests {
266
267	use geoengine_datatypes::{
268	primitives::{
269	BandSelection, CacheHint, SpatialPartition2D, SpatialResolution, TimeInterval,
270	},
271	raster::{
272	Grid2D, GridOrEmpty2D, GridShape, MaskedGrid2D, RasterDataType, RasterProperties,
273	TileInformation, TilingSpecification,
274	},
275	spatial_reference::SpatialReference,
276	util::test::TestDefault,
277	};
278
279	use crate::{
280	engine::{ChunkByteSize, MockExecutionContext},
281	mock::{MockRasterSource, MockRasterSourceParams},
282	};
283
284	use super::*;
285
286	#[tokio::test]	1✔
287	async fn test_unscale() {	1✔
288	let grid_shape = [2, 2].into();	1✔
289		1✔
290	let tiling_specification = TilingSpecification {	1✔
291	origin_coordinate: [0.0, 0.0].into(),	1✔
292	tile_size_in_pixels: grid_shape,	1✔
293	};	1✔
294		1✔
295	let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![7_u8, 7, 7, 6]).unwrap());	1✔
296		1✔
297	let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);	1✔
298	let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());	1✔
299		1✔
300	let mut raster_props = RasterProperties::default();	1✔
301	raster_props.set_scale(2.0);	1✔
302	raster_props.set_offset(1.0);	1✔
303		1✔
304	let raster_tile = RasterTile2D::new_with_tile_info_and_properties(	1✔
305	TimeInterval::default(),	1✔
306	TileInformation {	1✔
307	global_geo_transform: TestDefault::test_default(),	1✔
308	global_tile_position: [0, 0].into(),	1✔
309	tile_size_in_pixels: grid_shape,	1✔
310	},	1✔
311	0,	1✔
312	raster.into(),	1✔
313	raster_props,	1✔
314	CacheHint::default(),	1✔
315	);	1✔
316		1✔
317	let spatial_resolution = raster_tile.spatial_resolution();	1✔
318		1✔
319	let mrs = MockRasterSource {	1✔
320	params: MockRasterSourceParams {	1✔
321	data: vec![raster_tile],	1✔
322	result_descriptor: RasterResultDescriptor {	1✔
323	data_type: RasterDataType::U8,	1✔
324	spatial_reference: SpatialReference::epsg_4326().into(),	1✔
325	bbox: None,	1✔
326	time: None,	1✔
327	resolution: Some(spatial_resolution),	1✔
328	bands: RasterBandDescriptors::new_single_band(),	1✔
329	},	1✔
330	},	1✔
331	}	1✔
332	.boxed();	1✔
333		1✔
334	let scaling_mode = ScalingMode::MulSlopeAddOffset;	1✔
335		1✔
336	let output_measurement = None;	1✔
337		1✔
338	let op = RasterScaling {	1✔
339	params: RasterScalingParams {	1✔
340	slope: SlopeOffsetSelection::Auto,	1✔
341	offset: SlopeOffsetSelection::Auto,	1✔
342	output_measurement,	1✔
343	scaling_mode,	1✔
344	},	1✔
345	sources: SingleRasterSource { raster: mrs },	1✔
346	}	1✔
347	.boxed();	1✔
348
349	let initialized_op = op	1✔
350	.initialize(WorkflowOperatorPath::initialize_root(), &ctx)	1✔
351	.await	×
352	.unwrap();	1✔
353		1✔
354	let result_descriptor = initialized_op.result_descriptor();	1✔
355		1✔
356	assert_eq!(result_descriptor.data_type, RasterDataType::U8);	1✔
357	assert_eq!(	1✔
358	result_descriptor.bands[0].measurement,	1✔
359	Measurement::Unitless	1✔
360	);	1✔
361
362	let query_processor = initialized_op.query_processor().unwrap();	1✔
363		1✔
364	let query = geoengine_datatypes::primitives::RasterQueryRectangle {	1✔
365	spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),	1✔
366	spatial_resolution: SpatialResolution::one(),	1✔
367	time_interval: TimeInterval::default(),	1✔
368	attributes: BandSelection::first(),	1✔
369	};	1✔
370
371	let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {	1✔
372	panic!("expected TypedRasterQueryProcessor::U8");	×
373	};
374
375	let stream = typed_processor	1✔
376	.raster_query(query, &query_ctx)	1✔
377	.await	×
378	.unwrap();	1✔
379
380	let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;	1✔
381
382	let result_tile = results.as_slice()[0].as_ref().unwrap();	1✔
383		1✔
384	let result_grid = result_tile.grid_array.clone();	1✔
385		1✔
386	match result_grid {	1✔
387	GridOrEmpty2D::Grid(grid) => {	1✔
388	assert_eq!(grid.shape(), &GridShape::new([2, 2]));	1✔
389
390	let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();	1✔
391		1✔
392	let expected = vec![Some(15), Some(15), Some(15), Some(13)];	1✔
393		1✔
394	assert_eq!(res, expected);	1✔
395	}
396	GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),	×
397	}
398	}
399
400	#[tokio::test]	1✔
401	async fn test_scale() {	1✔
402	let grid_shape = [2, 2].into();	1✔
403		1✔
404	let tiling_specification = TilingSpecification {	1✔
405	origin_coordinate: [0.0, 0.0].into(),	1✔
406	tile_size_in_pixels: grid_shape,	1✔
407	};	1✔
408		1✔
409	let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![15_u8, 15, 15, 13]).unwrap());	1✔
410		1✔
411	let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);	1✔
412	let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());	1✔
413		1✔
414	let mut raster_props = RasterProperties::default();	1✔
415	raster_props.set_scale(2.0);	1✔
416	raster_props.set_offset(1.0);	1✔
417		1✔
418	let raster_tile = RasterTile2D::new_with_tile_info_and_properties(	1✔
419	TimeInterval::default(),	1✔
420	TileInformation {	1✔
421	global_geo_transform: TestDefault::test_default(),	1✔
422	global_tile_position: [0, 0].into(),	1✔
423	tile_size_in_pixels: grid_shape,	1✔
424	},	1✔
425	0,	1✔
426	raster.into(),	1✔
427	raster_props,	1✔
428	CacheHint::default(),	1✔
429	);	1✔
430		1✔
431	let spatial_resolution = raster_tile.spatial_resolution();	1✔
432		1✔
433	let mrs = MockRasterSource {	1✔
434	params: MockRasterSourceParams {	1✔
435	data: vec![raster_tile],	1✔
436	result_descriptor: RasterResultDescriptor {	1✔
437	data_type: RasterDataType::U8,	1✔
438	spatial_reference: SpatialReference::epsg_4326().into(),	1✔
439	bbox: None,	1✔
440	time: None,	1✔
441	resolution: Some(spatial_resolution),	1✔
442	bands: RasterBandDescriptors::new_single_band(),	1✔
443	},	1✔
444	},	1✔
445	}	1✔
446	.boxed();	1✔
447		1✔
448	let scaling_mode = ScalingMode::SubOffsetDivSlope;	1✔
449		1✔
450	let output_measurement = None;	1✔
451		1✔
452	let params = RasterScalingParams {	1✔
453	slope: SlopeOffsetSelection::Auto,	1✔
454	offset: SlopeOffsetSelection::Auto,	1✔
455	output_measurement,	1✔
456	scaling_mode,	1✔
457	};	1✔
458		1✔
459	let op = RasterScaling {	1✔
460	params,	1✔
461	sources: SingleRasterSource { raster: mrs },	1✔
462	}	1✔
463	.boxed();	1✔
464
465	let initialized_op = op	1✔
466	.initialize(WorkflowOperatorPath::initialize_root(), &ctx)	1✔
467	.await	×
468	.unwrap();	1✔
469		1✔
470	let result_descriptor = initialized_op.result_descriptor();	1✔
471		1✔
472	assert_eq!(result_descriptor.data_type, RasterDataType::U8);	1✔
473	assert_eq!(	1✔
474	result_descriptor.bands[0].measurement,	1✔
475	Measurement::Unitless	1✔
476	);	1✔
477
478	let query_processor = initialized_op.query_processor().unwrap();	1✔
479		1✔
480	let query = geoengine_datatypes::primitives::RasterQueryRectangle {	1✔
481	spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),	1✔
482	spatial_resolution: SpatialResolution::one(),	1✔
483	time_interval: TimeInterval::default(),	1✔
484	attributes: BandSelection::first(),	1✔
485	};	1✔
486
487	let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {	1✔
488	panic!("expected TypedRasterQueryProcessor::U8");	×
489	};
490
491	let stream = typed_processor	1✔
492	.raster_query(query, &query_ctx)	1✔
493	.await	×
494	.unwrap();	1✔
495
496	let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;	1✔
497
498	let result_tile = results.as_slice()[0].as_ref().unwrap();	1✔
499		1✔
500	let result_grid = result_tile.grid_array.clone();	1✔
501		1✔
502	match result_grid {	1✔
503	GridOrEmpty2D::Grid(grid) => {	1✔
504	assert_eq!(grid.shape(), &GridShape::new([2, 2]));	1✔
505
506	let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();	1✔
507		1✔
508	let expected = vec![Some(7), Some(7), Some(7), Some(6)];	1✔
509		1✔
510	assert_eq!(res, expected);	1✔
511	}
512	GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),	×
513	}
514	}
515	}

geo-engine / geoengine / 7006568925

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