thumbnails 0.2.1

Thumbnailing library. Converts various file formats into a smaller image.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

use crate::thumbnail::*;
use anyhow::Context;
use image::{DynamicImage, ImageBuffer};
use std::path::Path;
use video_rs::decode::Decoder;

pub struct Video;

impl Thumbnailable for Video {
    const MIME_TYPES: &'static [&'static str] = &[
        "video/mp4",
        "video/webm",
        "application/x-matroska",
        "video/quicktime",
        "application/octet-stream",
    ];

    fn run(thumbnailer: &Thumbnailer, path: &Path) -> anyhow::Result<DynamicImage> {
        let mut decoder = Decoder::new(path)?;

        let (width, height) = decoder.size();
        let frame = decoder.decode()?.1;

        let buf = frame
            .as_slice()
            .context("Failed to turn frame into slice.")?;

        let img: ImageBuffer<image::Rgb<u8>, Vec<u8>> =
            ImageBuffer::from_raw(width, height, buf.to_vec())
                .context("Failed to construct image buffer.")?;

        let thumb = DynamicImage::ImageRgb8(img).thumbnail(thumbnailer.width, thumbnailer.height);
        Ok(thumb)
    }
}