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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/exr/src/image/read/samples.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/exr/src/image/read/samples.rs')
-rw-r--r--vendor/exr/src/image/read/samples.rs122
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diff --git a/vendor/exr/src/image/read/samples.rs b/vendor/exr/src/image/read/samples.rs
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--- a/vendor/exr/src/image/read/samples.rs
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-//! How to read samples (a grid of `f32`, `f16` or `u32` values).
-
-use crate::image::*;
-use crate::meta::header::{Header};
-use crate::error::{Result, UnitResult};
-use crate::block::lines::LineRef;
-use crate::math::Vec2;
-use crate::meta::attribute::{ChannelDescription, SampleType};
-use crate::image::read::any_channels::{SamplesReader, ReadSamples};
-use crate::image::read::levels::{ReadSamplesLevel, ReadAllLevels, ReadLargestLevel};
-use crate::block::chunk::TileCoordinates;
-// use crate::image::read::layers::ReadChannels;
-
-/// Specify to read only flat samples and no "deep data"
-// FIXME do not throw error on deep data but just skip it!
-#[derive(Debug, Copy, Clone, Eq, PartialEq)]
-pub struct ReadFlatSamples;
-// pub struct ReadAnySamples;
-
-impl ReadFlatSamples {
-
- // TODO
- // e. g. `let sum = reader.any_channels_with(|sample, sum| sum += sample)`
- // pub fn any_channels_with <S> (self, storage: S) -> { }
-
- /// Specify to read only the highest resolution level, skipping all smaller variations.
- pub fn largest_resolution_level(self) -> ReadLargestLevel<Self> { ReadLargestLevel { read_samples: self } }
-
- /// Specify to read all contained resolution levels from the image, if any.
- pub fn all_resolution_levels(self) -> ReadAllLevels<Self> { ReadAllLevels { read_samples: self } }
-
- // TODO pub fn specific_resolution_level<F: Fn(&[Vec2<usize>])->usize >(self, select_level: F) -> ReadLevelBy<Self> { ReadAllLevels { read_samples: self } }
-}
-
-
-/*pub struct AnySamplesReader { TODO
- resolution: Vec2<usize>,
- samples: DeepAndFlatSamples
-}*/
-
-/// Processes pixel blocks from a file and accumulates them into a grid of samples, for example "Red" or "Alpha".
-#[derive(Debug, Clone, PartialEq)]
-pub struct FlatSamplesReader {
- level: Vec2<usize>,
- resolution: Vec2<usize>,
- samples: FlatSamples
-}
-
-
-// only used when samples is directly inside a channel, without levels
-impl ReadSamples for ReadFlatSamples {
- type Reader = FlatSamplesReader;
-
- fn create_sample_reader(&self, header: &Header, channel: &ChannelDescription) -> Result<Self::Reader> {
- self.create_samples_level_reader(header, channel, Vec2(0, 0), header.layer_size)
- }
-}
-
-impl ReadSamplesLevel for ReadFlatSamples {
- type Reader = FlatSamplesReader;
-
- fn create_samples_level_reader(&self, _header: &Header, channel: &ChannelDescription, level: Vec2<usize>, resolution: Vec2<usize>) -> Result<Self::Reader> {
- Ok(FlatSamplesReader {
- level, resolution, // TODO sampling
- samples: match channel.sample_type {
- SampleType::F16 => FlatSamples::F16(vec![f16::ZERO; resolution.area()]),
- SampleType::F32 => FlatSamples::F32(vec![0.0; resolution.area()]),
- SampleType::U32 => FlatSamples::U32(vec![0; resolution.area()]),
- }
- })
- }
-}
-
-
-impl SamplesReader for FlatSamplesReader {
- type Samples = FlatSamples;
-
- fn filter_block(&self, tile: TileCoordinates) -> bool {
- tile.level_index == self.level
- }
-
- fn read_line(&mut self, line: LineRef<'_>) -> UnitResult {
- let index = line.location;
- let resolution = self.resolution;
-
- // the index is generated by ourselves and must always be correct
- debug_assert_eq!(index.level, self.level, "line should have been filtered");
- debug_assert!(index.position.x() + index.sample_count <= resolution.width(), "line index calculation bug");
- debug_assert!(index.position.y() < resolution.height(), "line index calculation bug");
- debug_assert_ne!(resolution.0, 0, "sample size bug");
-
- let start_index = index.position.y() * resolution.width() + index.position.x();
- let end_index = start_index + index.sample_count;
-
- debug_assert!(
- start_index < end_index && end_index <= self.samples.len(),
- "for resolution {:?}, this is an invalid line: {:?}",
- self.resolution, line.location
- );
-
- match &mut self.samples {
- FlatSamples::F16(samples) =>
- line.read_samples_into_slice(&mut samples[start_index .. end_index])
- .expect("writing line bytes failed"),
-
- FlatSamples::F32(samples) =>
- line.read_samples_into_slice(&mut samples[start_index .. end_index])
- .expect("writing line bytes failed"),
-
- FlatSamples::U32(samples) =>
- line.read_samples_into_slice(&mut samples[start_index .. end_index])
- .expect("writing line bytes failed"),
- }
-
- Ok(())
- }
-
- fn into_samples(self) -> FlatSamples {
- self.samples
- }
-}
-