ICODEBROKER

■ 메모리 손실이 없는 비트맵 소스 구하기 예제

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using System.IO;

using System.Windows.Media.Imaging;

BitmapSource bitmapSource = null;

using(FileStream fileStream = new FileStream("sample.jpg", FileMode.Open))

{

    bitmapSource = GetBitmapSource(fileStream);

}

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■ 메모리 손실이 없는 비트맵 소스 구하기

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using System.IO;

using System.Windows;

using System.Windows.Media;

using System.Windows.Media.Imaging;

#region 비트맵 소스 구하기 - GetBitmapSource(stream)

/// <summary>

/// 비트맵 소스 구하기

/// </summary>

/// <param name="stream">스트림</param>

/// <returns>비트맵 소스</returns>

public BitmapSource GetBitmapSource(Stream stream)

{

    BitmapImage bitmapImage = new BitmapImage();

    bitmapImage.BeginInit();

    bitmapImage.CacheOption  = BitmapCacheOption.OnLoad;

    bitmapImage.StreamSource = stream;

    bitmapImage.EndInit();

    bitmapImage.Freeze();

    BitmapSource bitmapSource = new FormatConvertedBitmap(bitmapImage, PixelFormats.Pbgra32, null, 0);

    WriteableBitmap writeableBitmap = new WriteableBitmap(bitmapSource);

    int width  = writeableBitmap.PixelWidth;

    int height = writeableBitmap.PixelHeight;

    int[] pixelArray = new int[width * height];

    int stride = writeableBitmap.PixelWidth * (writeableBitmap.Format.BitsPerPixel / 8);

    writeableBitmap.CopyPixels(pixelArray, stride, 0);

    writeableBitmap.WritePixels(new Int32Rect(0, 0, width, height), pixelArray, stride, 0);

    bitmapImage = null;

    return writeableBitmap;

}

#endregion

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