public static void Save(MemBitmap bmp, Stream strm)
{
//-------------
unsafe
{
PixelFarm.CpuBlit.Imaging.TempMemPtr tmp = MemBitmap.GetBufferPtr(bmp);
int *intBuffer = (int *)tmp.Ptr;
int imgW = bmp.Width;
int imgH = bmp.Height;
Hjg.Pngcs.ImageInfo imgInfo = new Hjg.Pngcs.ImageInfo(imgW, imgH, 8, true); //8 bits per channel with alpha
Hjg.Pngcs.PngWriter writer = new Hjg.Pngcs.PngWriter(strm, imgInfo);
Hjg.Pngcs.ImageLine iline = new Hjg.Pngcs.ImageLine(imgInfo, Hjg.Pngcs.ImageLine.ESampleType.BYTE);
int startReadAt = 0;
int imgStride = imgW * 4;
int srcIndex = 0;
int srcIndexRowHead = (tmp.LengthInBytes / 4) - imgW;
for (int row = 0; row < imgH; row++)
{
byte[] scanlineBuffer = iline.ScanlineB;
srcIndex = srcIndexRowHead;
for (int b = 0; b < imgStride;)
{
int srcInt = intBuffer[srcIndex];
srcIndex++;
scanlineBuffer[b] = (byte)((srcInt >> 16) & 0xff);
scanlineBuffer[b + 1] = (byte)((srcInt >> 8) & 0xff);
scanlineBuffer[b + 2] = (byte)((srcInt) & 0xff);
scanlineBuffer[b + 3] = (byte)((srcInt >> 24) & 0xff);
b += 4;
}
srcIndexRowHead -= imgW;
startReadAt += imgStride;
writer.WriteRow(iline, row);
}
writer.End();
}
}
static void SaveImgBufferToFile(GlyphImage glyphImg, string filename)
{
//-------------
int[] intBuffer = glyphImg.GetImageBuffer();
using (System.IO.FileStream fs = new System.IO.FileStream(filename, System.IO.FileMode.Create))
{
int imgW = glyphImg.Width;
int imgH = glyphImg.Height;
Hjg.Pngcs.ImageInfo imgInfo = new Hjg.Pngcs.ImageInfo(imgW, imgH, 8, true); //8 bits per channel with alpha
Hjg.Pngcs.PngWriter writer = new Hjg.Pngcs.PngWriter(fs, imgInfo);
Hjg.Pngcs.ImageLine iline = new Hjg.Pngcs.ImageLine(imgInfo, Hjg.Pngcs.ImageLine.ESampleType.BYTE);
int startReadAt = 0;
int imgStride = imgW * 4;
int srcIndex = 0;
int srcIndexRowHead = intBuffer.Length - imgW;
for (int row = 0; row < imgH; row++)
{
byte[] scanlineBuffer = iline.ScanlineB;
srcIndex = srcIndexRowHead;
for (int b = 0; b < imgStride;)
{
int srcInt = intBuffer[srcIndex];
srcIndex++;
scanlineBuffer[b] = (byte)((srcInt >> 16) & 0xff);
scanlineBuffer[b + 1] = (byte)((srcInt >> 8) & 0xff);
scanlineBuffer[b + 2] = (byte)((srcInt) & 0xff);
scanlineBuffer[b + 3] = (byte)((srcInt >> 24) & 0xff);
b += 4;
}
srcIndexRowHead -= imgW;
startReadAt += imgStride;
writer.WriteRow(iline, row);
}
writer.End();
}
}