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implemented CwpFormat.Write method.

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morkt 2015-06-12 22:52:22 +04:00
parent 10a52b7f5a
commit cf721eab0d
1 changed files with 78 additions and 2 deletions
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80
ArcFormats/ImageCWP.cs
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@ -23,6 +23,7 @@
// IN THE SOFTWARE.
//
using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
@ -105,8 +106,83 @@ namespace GameRes.Formats.Crowd
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("CwpFormat.Write not implemented");
var writer = new Writer (image);
writer.Write (file);
}
internal class Writer
{
BitmapSource m_bitmap;
byte[] m_buffer = new byte[81920];
public Writer (ImageData image)
{
m_bitmap = image.Bitmap;
if (m_bitmap.Format.BitsPerPixel < 32)
{
m_bitmap = new FormatConvertedBitmap (m_bitmap, PixelFormats.Bgr32, null, 0);
}
int stride = m_bitmap.PixelWidth * 4;
var pixels = new byte[stride*m_bitmap.PixelHeight];
m_bitmap.CopyPixels (pixels, stride, 0);
for (int i = 0; i < pixels.Length; i += 4)
{
byte t = pixels[i];
pixels[i] = pixels[i+2];
pixels[i+2] = t;
}
m_bitmap = BitmapSource.Create (m_bitmap.PixelWidth, m_bitmap.PixelHeight,
m_bitmap.DpiX, m_bitmap.DpiY, PixelFormats.Bgra32, null, pixels, stride);
}
public void Write (Stream file)
{
var encoder = new PngBitmapEncoder();
encoder.Frames.Add (BitmapFrame.Create (m_bitmap));
using (var png = new MemoryStream())
using (var cwp = new BinaryWriter (file, System.Text.Encoding.ASCII, true))
{
encoder.Save (png);
var header = new byte[0x11];
png.Position = 0x10;
png.Read (header, 0, header.Length);
cwp.Write (0x50445743u); // 'CWDP'
cwp.Write (header, 0, header.Length);
var idat = PngFormat.FindChunk (png, "IDAT");
if (-1 == idat)
throw new InvalidFormatException ("CWP conversion failed");
png.Position = idat;
png.Read (header, 0, 8);
int chunk_size = BigEndian.ToInt32 (header, 0) + 4;
cwp.Write (header, 0, 4);
for (;;)
{
CopyChunk (png, file, chunk_size);
if (8 != png.Read (header, 0, 8))
throw new InvalidFormatException ("CWP conversion failed");
if (Binary.AsciiEqual (header, 4, "IEND"))
{
cwp.Write ((byte)0);
break;
}
chunk_size = BigEndian.ToInt32 (header, 0) + 4;
cwp.Write (header, 0, 8);
}
}
}
private void CopyChunk (Stream src, Stream dst, int size)
{
while (size > 0)
{
int amount = Math.Min (size, m_buffer.Length);
int read = src.Read (m_buffer, 0, amount);
if (read != amount)
throw new InvalidFormatException ("CWP conversion failed");
dst.Write (m_buffer, 0, amount);
size -= amount;
}
}
}
}
}