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38 lines
1.0 KiB
Rust
38 lines
1.0 KiB
Rust
3 years ago
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use crate::error::{ThumbError, ThumbResult};
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use image::png::PngDecoder;
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use image::DynamicImage;
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use mime::Mime;
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use std::fs;
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use std::io::{BufRead, Seek};
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use std::path::PathBuf;
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use vid2img::FileSource;
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pub fn get_video_frame<R: BufRead + Seek>(mut reader: R, mime: Mime) -> ThumbResult<DynamicImage> {
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let tempdir = tempfile::tempdir()?;
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tempdir.path();
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let path = PathBuf::from(tempdir.path())
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.join("video")
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.with_extension(mime.subtype().as_str());
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let mut buf = Vec::new();
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reader.read_to_end(&mut buf)?;
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fs::write(&path, buf)?;
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let img = extract_frame_from_video(&path)?;
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tempdir.close()?;
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Ok(img)
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}
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fn extract_frame_from_video(path: &PathBuf) -> ThumbResult<DynamicImage> {
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let source = FileSource::new(path, (2000, 2000))?;
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for frame in source.into_iter() {
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if let Ok(Some(data)) = frame {
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let decoder = PngDecoder::new(data.as_slice())?;
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let img = DynamicImage::from_decoder(decoder)?;
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return Ok(img);
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}
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}
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Err(ThumbError::NullVideo)
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}
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