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Prefer full-res image if the full-res image is smaller #1

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Prefer full-res image if the full-res image is smaller #1

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16 changes: 12 additions & 4 deletions src/compress.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -52,10 +52,18 @@ pub fn encode_outputs(img: &RgbaImage, crop: Crop, enc: &Encoding) -> Result<(Ve
h: main.height() as usize,
};
let thumb = resize_to_fit(&main, full, MAX_THUMB_WIDTH, MAX_THUMB_HEIGHT);
let thumb_png = encode_png(
thumb.as_ref().unwrap_or(&main),
enc.colors.map(|c| c.min(THUMB_COLORS)),
)?;
let thumb_png = {
let actual_thumb = encode_png(
thumb.as_ref().unwrap_or(&main),
enc.colors.map(|c| c.min(THUMB_COLORS)),
)?;
// Prefer full-res image if the thumbnail ends up larger than the main image
if actual_thumb.len() > main_png.len() {
main_png.clone()
} else {
actual_thumb
}
};
Ok((main_png, thumb_png))
}

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