Ejemplo n.º 1
0
        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();
            }
        }