From 1ad3a5d0edebbd0f0b98ce68ad81ea4c36f5a63d Mon Sep 17 00:00:00 2001
From: apocelipes <seve3r@outlook.com>
Date: Sat, 11 May 2024 17:47:13 +0800
Subject: [PATCH] image/gif: use internal/byteorder

---
 src/image/gif/writer.go | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/src/image/gif/writer.go b/src/image/gif/writer.go
index 0da47f3e35..0d2a1321c0 100644
--- a/src/image/gif/writer.go
+++ b/src/image/gif/writer.go
@@ -13,6 +13,7 @@ import (
 	"image/color"
 	"image/color/palette"
 	"image/draw"
+	"internal/byteorder"
 	"io"
 )
 
@@ -33,12 +34,6 @@ func log2(x int) int {
 	return -1
 }
 
-// Little-endian.
-func writeUint16(b []uint8, u uint16) {
-	b[0] = uint8(u)
-	b[1] = uint8(u >> 8)
-}
-
 // writer is a buffered writer.
 type writer interface {
 	Flush() error
@@ -151,8 +146,8 @@ func (e *encoder) writeHeader() {
 	}
 
 	// Logical screen width and height.
-	writeUint16(e.buf[0:2], uint16(e.g.Config.Width))
-	writeUint16(e.buf[2:4], uint16(e.g.Config.Height))
+	byteorder.LePutUint16(e.buf[0:2], uint16(e.g.Config.Width))
+	byteorder.LePutUint16(e.buf[2:4], uint16(e.g.Config.Height))
 	e.write(e.buf[:4])
 
 	if p, ok := e.g.Config.ColorModel.(color.Palette); ok && len(p) > 0 {
@@ -190,7 +185,7 @@ func (e *encoder) writeHeader() {
 		}
 		e.buf[0] = 0x03 // Block Size.
 		e.buf[1] = 0x01 // Sub-block Index.
-		writeUint16(e.buf[2:4], uint16(e.g.LoopCount))
+		byteorder.LePutUint16(e.buf[2:4], uint16(e.g.LoopCount))
 		e.buf[4] = 0x00 // Block Terminator.
 		e.write(e.buf[:5])
 	}
@@ -276,7 +271,7 @@ func (e *encoder) writeImageBlock(pm *image.Paletted, delay int, disposal byte)
 		} else {
 			e.buf[3] = 0x00 | disposal<<2
 		}
-		writeUint16(e.buf[4:6], uint16(delay)) // Delay Time (1/100ths of a second)
+		byteorder.LePutUint16(e.buf[4:6], uint16(delay)) // Delay Time (1/100ths of a second)
 
 		// Transparent color index.
 		if transparentIndex != -1 {
@@ -288,10 +283,10 @@ func (e *encoder) writeImageBlock(pm *image.Paletted, delay int, disposal byte)
 		e.write(e.buf[:8])
 	}
 	e.buf[0] = sImageDescriptor
-	writeUint16(e.buf[1:3], uint16(b.Min.X))
-	writeUint16(e.buf[3:5], uint16(b.Min.Y))
-	writeUint16(e.buf[5:7], uint16(b.Dx()))
-	writeUint16(e.buf[7:9], uint16(b.Dy()))
+	byteorder.LePutUint16(e.buf[1:3], uint16(b.Min.X))
+	byteorder.LePutUint16(e.buf[3:5], uint16(b.Min.Y))
+	byteorder.LePutUint16(e.buf[5:7], uint16(b.Dx()))
+	byteorder.LePutUint16(e.buf[7:9], uint16(b.Dy()))
 	e.write(e.buf[:9])
 
 	// To determine whether or not this frame's palette is the same as the