added the decoder and began to configure it
created new variables and initiated them with calues from the .info added some questions
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83318d8035
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@ -1,15 +1,53 @@
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use std::path::Path;
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use crate::image::Image;
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use std::fs::File;
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pub fn image_loader(path: &Path) -> Image<f32> {
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let vec: Vec<(f32, f32, f32, f32)> = vec![
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(-33.0, 7732.0, 2564355.0, -79.0),
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(1.0, 79.0, 255.0, 1.05),
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(300.0, 300.0, 300.0, 300.0),
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];
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let image: Image<f32> = Image::new(1, 3, vec);
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/* !!!Fragen!!!
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- was ist .unwrap()
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- was ist ein IDAT chunk (bei read.info() in der doku)
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- was ist .output_buffer_size()
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- was ist .next_frame
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- kann ich srgb nutzen für dir rgba values bzw für den rgb teil
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- woher ziehe ich den alpha channel
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- ist makierter teil kommplet nötig
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*/
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pub fn image_loader(path: &Path) -> Image<f32>
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{
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//marker1
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// The decoder is a build for reader and can be used to set various decoding options
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// via `Transformations`. The default output transformation is `Transformations::IDENTITY`.
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//open a path in the decoder to look into the img
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let decoder = png::Decoder::new(File::open(path).unwrap());
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let mut reader = decoder.read_info().unwrap();
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// Allocate the output buffer.
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let mut buf = vec![0; reader.output_buffer_size()];
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// Read the next frame. An APNG might contain multiple frames.
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let info = reader.next_frame(&mut buf).unwrap();
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let bit_depth = reader.info().bit_depth;
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let color_type = reader.info().color_type;
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let width = reader.info().width;
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let height = reader.info().height;
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// Grab the bytes of the image.
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let bytes = &buf[..info.buffer_size()];
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// Inspect more details of the last read frame.
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let in_animation = reader.info().frame_control.is_some();
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//marker1
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let vec: Vec<(f32, f32, f32, f32)> = vec!
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[
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(-33.0, 7732.0, 2564355.0, -79.0),
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(1.0, 79.0, 255.0, 1.05),
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(300.0, 300.0, 300.0, 300.0),
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];
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let image: Image<f32> = Image::new(1, 3, vec, path.to_path_buf());
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image
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}
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