From c193acbf7b745b071f5617e269f0955ee97c25d3 Mon Sep 17 00:00:00 2001
From: yuanyan3060 <58114805+yuanyan3060@users.noreply.github.com>
Date: Sat, 23 Mar 2024 12:31:17 +0800
Subject: [PATCH] fix rgba8 image jpeg encode bug (#2169)

---
 src/codecs/jpeg/encoder.rs | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/src/codecs/jpeg/encoder.rs b/src/codecs/jpeg/encoder.rs
index ebf2532524..52390220a7 100644
--- a/src/codecs/jpeg/encoder.rs
+++ b/src/codecs/jpeg/encoder.rs
@@ -9,7 +9,7 @@ use crate::error::{
 };
 use crate::image::{ImageEncoder, ImageFormat};
 use crate::utils::clamp;
-use crate::{ExtendedColorType, GenericImageView, ImageBuffer, Luma, LumaA, Pixel, Rgb, Rgba};
+use crate::{ExtendedColorType, GenericImageView, ImageBuffer, Luma, Pixel, Rgb};
 
 use super::entropy::build_huff_lut_const;
 use super::transform;
@@ -461,21 +461,11 @@ impl<W: Write> JpegEncoder<W> {
                     ImageBuffer::from_raw(width, height, image).unwrap();
                 self.encode_image(&image)
             }
-            ExtendedColorType::La8 => {
-                let image: ImageBuffer<LumaA<_>, _> =
-                    ImageBuffer::from_raw(width, height, image).unwrap();
-                self.encode_image(&image)
-            }
             ExtendedColorType::Rgb8 => {
                 let image: ImageBuffer<Rgb<_>, _> =
                     ImageBuffer::from_raw(width, height, image).unwrap();
                 self.encode_image(&image)
             }
-            ExtendedColorType::Rgba8 => {
-                let image: ImageBuffer<Rgba<_>, _> =
-                    ImageBuffer::from_raw(width, height, image).unwrap();
-                self.encode_image(&image)
-            }
             _ => Err(ImageError::Unsupported(
                 UnsupportedError::from_format_and_kind(
                     ImageFormat::Jpeg.into(),
@@ -577,7 +567,7 @@ impl<W: Write> JpegEncoder<W> {
         build_scan_header(&mut buf, &self.components[..num_components]);
         self.writer.write_segment(SOS, &buf)?;
 
-        if let ExtendedColorType::Rgb8 = color_type {
+        if ExtendedColorType::Rgb8 == color_type || ExtendedColorType::Rgba8 == color_type {
             self.encode_rgb(image)
         } else {
             self.encode_gray(image)