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use std::path::PathBuf;
use bpaf::{construct, positional, OptionParser, Parser};
use demosaic::Demosaic;
use image::buffer::ConvertBuffer;
mod demosaic;
mod pipeline;
#[derive(Clone, Debug)]
struct Args {
paths: Vec<PathBuf>
}
fn args() -> OptionParser<Args> {
let paths = positional("FILE").some("must process at least one image");
construct!(Args { paths })
.to_options()
.descr("Intuitive raw photo processing engine")
}
fn main() {
// Parse arguments
let args = args().fallback_to_usage().run();
// Initialize GPU
let instance = wgpu::Instance::new(&wgpu::InstanceDescriptor::default());
let adapter = pollster::block_on(instance.request_adapter(&wgpu::RequestAdapterOptions::default())).unwrap();
let downlevel_caps = adapter.get_downlevel_capabilities();
if !downlevel_caps.flags.contains(wgpu::DownlevelFlags::COMPUTE_SHADERS) {
panic!("GPU does not support compute");
}
let (gpu, queue) = pollster::block_on(adapter.request_device(&wgpu::DeviceDescriptor {
label: None,
required_features: wgpu::Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES,
required_limits: wgpu::Limits::default(),
memory_hints: wgpu::MemoryHints::MemoryUsage,
}, None)).unwrap();
// Process images
for path in &args.paths {
let image = rawloader::decode_file(path).unwrap();
dbg!(&image.cfa);
let pipeline = pipeline::Resources {
demosaic: Box::new(demosaic::Lmmse::new(&gpu, &queue))
};
let demosaiced = pipeline.demosaic.demoasic(&gpu, &queue, &image);
let readback_buf = gpu.create_buffer(&wgpu::BufferDescriptor {
label: None,
size: 4 * 4 * image.width as u64 * image.height as u64,
usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
mapped_at_creation: false,
});
let mut encoder = gpu.create_command_encoder(&wgpu::CommandEncoderDescriptor {
label: None,
});
encoder.copy_texture_to_buffer(
wgpu::TexelCopyTextureInfo {
texture: &demosaiced,
mip_level: 0,
origin: wgpu::Origin3d::ZERO,
aspect: wgpu::TextureAspect::All,
},
wgpu::TexelCopyBufferInfo {
buffer: &readback_buf,
layout: wgpu::TexelCopyBufferLayout {
offset: 0,
bytes_per_row: Some(4 * 4 * image.width as u32),
rows_per_image: Some(image.height as u32),
},
},
wgpu::Extent3d {
width: image.width as u32,
height: image.height as u32,
depth_or_array_layers: 1,
}
);
queue.submit([encoder.finish()]);
let readback_slice = readback_buf.slice(..);
readback_slice.map_async(wgpu::MapMode::Read, |_| {});
gpu.poll(wgpu::Maintain::Wait);
{
let readback_data = readback_slice.get_mapped_range();
let result_image = image::ImageBuffer::<image::Rgba<f32>, _>::from_raw(image.width as u32, image.height as u32, bytemuck::cast_slice(&readback_data)).unwrap();
<_ as ConvertBuffer<image::ImageBuffer<image::Rgb<u16>, Vec<u16>>>>::convert(&result_image).save_with_format("out.png", image::ImageFormat::Png).unwrap();
}
readback_buf.unmap();
}
}
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