44 lines
1.3 KiB
Rust
44 lines
1.3 KiB
Rust
use anyhow::anyhow;
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use std::io::Read;
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use std::path::Path;
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use std::process::Command;
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use anyhow::Result;
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use super::Previewable;
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pub struct AudioPath<'a>(pub &'a Path);
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const COLOR: &str = "#dc322f"; // solarized red
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impl<'a> Previewable for AudioPath<'a> {
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fn get_thumbnail(&self) -> Result<Option<Vec<u8>>> {
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let outfile = tempfile::Builder::new().suffix(".webp").tempfile()?;
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let thumbnail_cmd = Command::new("ffmpeg")
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.args(["-i", &self.0.to_string_lossy()])
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.args([
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"-filter_complex",
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&format!(
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"[0:a]aformat=channel_layouts=mono, compand=gain=-2,
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showwavespic=s=860x256:colors={COLOR},
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drawbox=x=(iw-w)/2:y=(ih-h)/2:w=iw:h=1:color={COLOR}"
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),
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])
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.args(["-vframes", "1"])
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.arg(&*outfile.path().to_string_lossy())
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.arg("-y")
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.output()?;
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if !thumbnail_cmd.status.success() {
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return Err(anyhow!(
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"Failed to render thumbnail: {:?}",
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String::from_utf8_lossy(&thumbnail_cmd.stderr)
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));
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}
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let mut buffer = Vec::new();
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outfile.as_file().read_to_end(&mut buffer)?;
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Ok(Some(buffer))
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}
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}
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