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优化图像资源管理：1.初始化时创建512x384透明bitmap 2.中途不进行Dispose和设置为null 3.仅在控件Dispose时释放资源

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zqm
2025-10-30 15:01:57 +08:00
parent a6a6563c1b
commit 444c62efe4
1 changed files with 55 additions and 14 deletions
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69
Windows/CS/Framework4.0/Toprie/Toprie/Camera.cs
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@@ -353,27 +353,61 @@ namespace JoyD.Windows.CS.Toprie
}
/// <summary>
/// 初始化图像缓冲区
/// 初始化图像缓冲区和相关图像资源
/// </summary>
private void InitializeImageBuffer()
{
try
{
// 创建512*384大小的bitmap作为图像缓冲区
// 创建512*384大小的透明bitmap作为图像缓冲区
_imageBuffer = new Bitmap(BUFFER_WIDTH, BUFFER_HEIGHT);
Console.WriteLine($"图像缓冲区已初始化: {BUFFER_WIDTH}x{BUFFER_HEIGHT}");
// 初始化缓冲区为黑色背景
// 初始化缓冲区为透明背景
using (Graphics g = Graphics.FromImage(_imageBuffer))
{
g.Clear(Color.Black);
g.Clear(Color.Transparent);
}
// 初始化InfoImage为透明bitmap
lock (_infoImageLock)
{
_infoImage = new Bitmap(BUFFER_WIDTH, BUFFER_HEIGHT);
using (Graphics g = Graphics.FromImage(_infoImage))
{
g.Clear(Color.Transparent);
}
Console.WriteLine("InfoImage已初始化为透明bitmap");
}
// 初始化图像框的bitmap为透明
if (imageBox != null && !imageBox.IsDisposed)
{
imageBox.Image = new Bitmap(BUFFER_WIDTH, BUFFER_HEIGHT);
using (Graphics g = Graphics.FromImage(imageBox.Image))
{
g.Clear(Color.Transparent);
}
Console.WriteLine("图像框bitmap已初始化为透明");
}
}
catch (Exception ex)
{
Console.WriteLine($"初始化图像缓冲区失败: {ex.Message}");
// 如果初始化失败，确保_imageBuffer为null
_imageBuffer = null;
Console.WriteLine($"初始化图像资源失败: {ex.Message}");
// 发生异常时释放已创建的资源
if (_imageBuffer != null)
{
_imageBuffer.Dispose();
_imageBuffer = null;
}
lock (_infoImageLock)
{
if (_infoImage != null)
{
_infoImage.Dispose();
_infoImage = null;
}
}
}
}
@@ -581,15 +615,22 @@ namespace JoyD.Windows.CS.Toprie
}
// 按照用户要求：收到图像数据后，将图像保存到LastImage中
// 不释放旧的LastImage，仅在控件Dispose时释放
lock (_lastImageLock)
{
// 释放旧的LastImage资源
if (_lastImage != null)
// 如果是第一次设置LastImage，直接赋值
if (_lastImage == null)
{
try { _lastImage.Dispose(); } catch {}
_lastImage = newImage;
}
else
{
// 后续更新时，使用临时变量保存新图像，然后替换引用
Image temp = newImage;
newImage = _lastImage;
_lastImage = temp;
// 注意：这里不Dispose旧图像，只在控件Dispose时统一释放
}
// 设置新的LastImage
_lastImage = newImage;
}
// 按照用户要求：调用更新到UI
@@ -697,8 +738,8 @@ namespace JoyD.Windows.CS.Toprie
{
using (Graphics g = Graphics.FromImage(_imageBuffer))
{
// 清除缓冲区背景为黑色
g.Clear(Color.Black);
// 清除缓冲区背景为透明色
g.Clear(Color.Transparent);
// 步骤1：先将LastImage绘制到全局缓冲
if (lastImage != null)