避免标记图编码重复复制像素缓冲

复用同一个 DynamicImage 完成文件保存和返回数据编码。保持标记图内容和错误处理不变。
2026-09-10 19:02:09 +08:00
parent ae2f5fc80b
commit f200cb4d3c
1 changed files with 3 additions and 2 deletions
@@ -94,11 +94,12 @@ fn build_marked_image_blocking(
            height,
        );
    }
-    image::DynamicImage::ImageRgba8(image.clone())
+    let image = image::DynamicImage::ImageRgba8(image);
+    image
        .save_with_format(target, image::ImageFormat::Png)
        .map_err(|e| format!("写入标记图失败：{e}"))?;
    let mut png = Vec::new();
-    image::DynamicImage::ImageRgba8(image)
+    image
        .write_to(&mut std::io::Cursor::new(&mut png), image::ImageFormat::Png)
        .map_err(|e| format!("编码标记图失败：{e}"))?;
    Ok(format!(