示例#1
0
        public void Rgb2CrTest()
        {
            Pixel[] pixBuffer = new Pixel[256];
            for (int i = 0; i < pixBuffer.Length; i++)
            {
                pixBuffer[i].SetGray((sbyte)(i - 128));
            }

            sbyte[] outBuff = new sbyte[256];

            unsafe
            {
                fixed(Pixel *p = pixBuffer)
                fixed(sbyte *pOutBuff = outBuff)
                {
                    Pixel *pBuff = p;
                    sbyte *pOut  = pOutBuff;

                    InterWaveTransform.Rgb2Y(pBuff, 16, 16, 16 * 3, pOut, 16);
                }
            }

            int outLength = outBuff.Length - 1;

            for (int i = 0; i < outLength; i++)
            {
                if (i > 0)
                {
                    if (i < 94)
                    {
                        Assert.True(unchecked ((byte)outBuff[i]) <= unchecked ((byte)outBuff[i + 1]));
                    }
                    Assert.NotEqual(0, unchecked ((byte)outBuff[i]));
                }
            }
        }
示例#2
0
 public static extern void GlTexSubImage2D(uint target, int level, int xoffset, int yoffset, int width, int height, uint format, uint type, Pixel *pixels);
示例#3
0
 public static extern void GlTexImage2D(uint target, int level, uint internalformat, int width, int height, int border, uint format, uint type, Pixel *pixels);
示例#4
0
 public unsafe static extern void RenderText(int scrW, int scrH, int width, int height, Pixel *pixels);
示例#5
0
 public unsafe static extern void RenderPixels(int width, int height, Pixel *pixels);
        /// <summary>
        /// Initializes an InterWavePixelMap with color image #bm#.  This constructor
        /// performs the wavelet decomposition of image #bm# and records the
        /// corresponding wavelet coefficients. Argument #mask# is an optional
        /// bilevel image specifying the masked pixels(see \Ref{ IW44Image.h}).
        /// Argument #crcbmode# specifies how the chrominance information should be
        /// encoded(see \Ref{ CRCBMode}).
        /// </summary>
        /// <param name="bm"></param>
        /// <param name="mask"></param>
        /// <param name="mode"></param>
        public unsafe void InitializeEncoder(IPixelMap pm, Bitmap gmask = null, YCrCbMode crcbmode = YCrCbMode.Normal)
        {
            /* Free */
            CloseEncoder();

            // Handle CRCB mode
            switch (crcbmode)
            {
            case YCrCbMode.None:
                _CrCbHalf  = true;
                _CrCbDelay = -1;
                break;

            case YCrCbMode.Half:
                _CrCbHalf  = true;
                _CrCbDelay = 10;
                break;

            case YCrCbMode.Normal:
                _CrCbHalf  = false;
                _CrCbDelay = 10;
                break;

            case YCrCbMode.Full:
                _CrCbHalf  = false;
                _CrCbDelay = 0;
                break;
            }

            // Prepare mask information
            sbyte *msk8       = (sbyte *)IntPtr.Zero;
            int    mskrowsize = 0;

            Bitmap   mask  = gmask;
            GCHandle hMask = default(GCHandle);

            if (mask != null)
            {
                hMask      = GCHandle.Alloc(mask.Data, GCHandleType.Pinned);
                msk8       = (sbyte *)hMask.AddrOfPinnedObject();
                mskrowsize = mask.GetRowSize();
            }

            /* Create */
            int width  = pm.Width;
            int height = pm.Height;

            sbyte[]  sYBuffer = new sbyte[width * height];
            GCHandle hYBuffer = GCHandle.Alloc(sYBuffer, GCHandleType.Pinned);
            sbyte *  yBuffer  = (sbyte *)hYBuffer.AddrOfPinnedObject();

            // Create maps
            InterWaveMapEncoder eymap = new InterWaveMapEncoder(width, height);

            _YMap = eymap;

            GCHandle hData = GCHandle.Alloc(pm.Data, GCHandleType.Pinned);
            Pixel *  pData = (Pixel *)hData.AddrOfPinnedObject();

            // Create chrominance maps
            if (_CrCbDelay >= 0)
            {
                sbyte[]  sCbBuffer = new sbyte[width * height];
                GCHandle hCbBuffer = GCHandle.Alloc(sCbBuffer, GCHandleType.Pinned);
                sbyte *  cbBuffer  = (sbyte *)hCbBuffer.AddrOfPinnedObject();

                sbyte[]  sCrBuffer = new sbyte[width * height];
                GCHandle hCrBuffer = GCHandle.Alloc(sCrBuffer, GCHandleType.Pinned);
                sbyte *  crBuffer  = (sbyte *)hCrBuffer.AddrOfPinnedObject();

                InterWaveMapEncoder ecbmap = new InterWaveMapEncoder(width, height);
                _CbMap = ecbmap;

                InterWaveMapEncoder ecrmap = new InterWaveMapEncoder(width, height);
                _CrMap = ecrmap;

                // Color space conversion from RGB to YCbCr and channel separation
                InterWaveTransform.Rgb2YCbCr(pData, width, height, width * 3, yBuffer, cbBuffer, crBuffer, width);

                // Create YMap
                eymap.Create(yBuffer, width, msk8, mskrowsize);
                // Create CbMap
                ecbmap.Create(cbBuffer, width, msk8, mskrowsize);
                // Create CrMap
                ecrmap.Create(crBuffer, width, msk8, mskrowsize);

                // Perform chrominance reduction (CrCbHalf)
                if (_CrCbHalf)
                {
                    ecbmap.Slashres(2);
                    ecrmap.Slashres(2);
                }

                if (hCbBuffer.IsAllocated)
                {
                    hCbBuffer.Free();
                }

                if (hCrBuffer.IsAllocated)
                {
                    hCrBuffer.Free();
                }
            }
            else
            {
                // Fill buffer with luminance information
                InterWaveTransform.Rgb2Y(pData, width, height, pm.GetRowSize(), yBuffer, width);
                // Create YMAP
                eymap.Create(yBuffer, width, msk8, mskrowsize);

                // Inversion for gray images
                sbyte *e = yBuffer + width * height;
                for (sbyte *b = yBuffer; b < e; b++)
                {
                    *b = (sbyte)(255 - *b);
                }
            }

            if (hMask.IsAllocated)
            {
                hMask.Free();
            }

            hData.Free();
            hYBuffer.Free();
        }
示例#7
0
        private unsafe static Surface ReadNv12(ResourceManager rm, ref SlotSurfaceConfig config, ref PlaneOffsets offsets)
        {
            InputSurface input = ReadSurface(rm.Gmm, ref config, ref offsets, 1, 2);

            int width  = input.Width;
            int height = input.Height;

            int yStride  = GetPitch(width, 1);
            int uvStride = GetPitch(input.UvWidth, 2);

            Surface output = new Surface(rm.SurfacePool, width, height);

            if (Sse41.IsSupported)
            {
                Vector128 <byte> shufMask = Vector128.Create(
                    (byte)0, (byte)2, (byte)3, (byte)1,
                    (byte)4, (byte)6, (byte)7, (byte)5,
                    (byte)8, (byte)10, (byte)11, (byte)9,
                    (byte)12, (byte)14, (byte)15, (byte)13);
                Vector128 <short> alphaMask = Vector128.Create(0xffUL << 48).AsInt16();

                int yStrideGap  = yStride - width;
                int uvStrideGap = uvStride - input.UvWidth;

                int widthTrunc = width & ~0xf;

                fixed(Pixel *dstPtr = output.Data)
                {
                    Pixel *op = dstPtr;

                    fixed(byte *src0Ptr = input.Buffer0, src1Ptr = input.Buffer1)
                    {
                        byte *i0p = src0Ptr;

                        for (int y = 0; y < height; y++)
                        {
                            byte *i1p = src1Ptr + (y >> 1) * uvStride;

                            int x = 0;

                            for (; x < widthTrunc; x += 16, i0p += 16, i1p += 16)
                            {
                                Vector128 <short> ya0 = Sse41.ConvertToVector128Int16(i0p);
                                Vector128 <short> ya1 = Sse41.ConvertToVector128Int16(i0p + 8);

                                Vector128 <byte> uv = Sse2.LoadVector128(i1p);

                                Vector128 <short> uv0 = Sse2.UnpackLow(uv.AsInt16(), uv.AsInt16());
                                Vector128 <short> uv1 = Sse2.UnpackHigh(uv.AsInt16(), uv.AsInt16());

                                Vector128 <short> rgba0 = Sse2.UnpackLow(ya0, uv0);
                                Vector128 <short> rgba1 = Sse2.UnpackHigh(ya0, uv0);
                                Vector128 <short> rgba2 = Sse2.UnpackLow(ya1, uv1);
                                Vector128 <short> rgba3 = Sse2.UnpackHigh(ya1, uv1);

                                rgba0 = Ssse3.Shuffle(rgba0.AsByte(), shufMask).AsInt16();
                                rgba1 = Ssse3.Shuffle(rgba1.AsByte(), shufMask).AsInt16();
                                rgba2 = Ssse3.Shuffle(rgba2.AsByte(), shufMask).AsInt16();
                                rgba3 = Ssse3.Shuffle(rgba3.AsByte(), shufMask).AsInt16();

                                Vector128 <short> rgba16_0 = Sse41.ConvertToVector128Int16(rgba0.AsByte());
                                Vector128 <short> rgba16_1 = Sse41.ConvertToVector128Int16(HighToLow(rgba0.AsByte()));
                                Vector128 <short> rgba16_2 = Sse41.ConvertToVector128Int16(rgba1.AsByte());
                                Vector128 <short> rgba16_3 = Sse41.ConvertToVector128Int16(HighToLow(rgba1.AsByte()));
                                Vector128 <short> rgba16_4 = Sse41.ConvertToVector128Int16(rgba2.AsByte());
                                Vector128 <short> rgba16_5 = Sse41.ConvertToVector128Int16(HighToLow(rgba2.AsByte()));
                                Vector128 <short> rgba16_6 = Sse41.ConvertToVector128Int16(rgba3.AsByte());
                                Vector128 <short> rgba16_7 = Sse41.ConvertToVector128Int16(HighToLow(rgba3.AsByte()));

                                rgba16_0 = Sse2.Or(rgba16_0, alphaMask);
                                rgba16_1 = Sse2.Or(rgba16_1, alphaMask);
                                rgba16_2 = Sse2.Or(rgba16_2, alphaMask);
                                rgba16_3 = Sse2.Or(rgba16_3, alphaMask);
                                rgba16_4 = Sse2.Or(rgba16_4, alphaMask);
                                rgba16_5 = Sse2.Or(rgba16_5, alphaMask);
                                rgba16_6 = Sse2.Or(rgba16_6, alphaMask);
                                rgba16_7 = Sse2.Or(rgba16_7, alphaMask);

                                rgba16_0 = Sse2.ShiftLeftLogical(rgba16_0, 2);
                                rgba16_1 = Sse2.ShiftLeftLogical(rgba16_1, 2);
                                rgba16_2 = Sse2.ShiftLeftLogical(rgba16_2, 2);
                                rgba16_3 = Sse2.ShiftLeftLogical(rgba16_3, 2);
                                rgba16_4 = Sse2.ShiftLeftLogical(rgba16_4, 2);
                                rgba16_5 = Sse2.ShiftLeftLogical(rgba16_5, 2);
                                rgba16_6 = Sse2.ShiftLeftLogical(rgba16_6, 2);
                                rgba16_7 = Sse2.ShiftLeftLogical(rgba16_7, 2);

                                Sse2.Store((short *)(op + (uint)x + 0), rgba16_0);
                                Sse2.Store((short *)(op + (uint)x + 2), rgba16_1);
                                Sse2.Store((short *)(op + (uint)x + 4), rgba16_2);
                                Sse2.Store((short *)(op + (uint)x + 6), rgba16_3);
                                Sse2.Store((short *)(op + (uint)x + 8), rgba16_4);
                                Sse2.Store((short *)(op + (uint)x + 10), rgba16_5);
                                Sse2.Store((short *)(op + (uint)x + 12), rgba16_6);
                                Sse2.Store((short *)(op + (uint)x + 14), rgba16_7);
                            }

                            for (; x < width; x++, i1p += (x & 1) * 2)
                            {
                                Pixel *px = op + (uint)x;

                                px->R = Upsample(*i0p++);
                                px->G = Upsample(*i1p);
                                px->B = Upsample(*(i1p + 1));
                                px->A = 0x3ff;
                            }

                            op  += width;
                            i0p += yStrideGap;
                            i1p += uvStrideGap;
                        }
                    }
                }
            }
            else
            {
                for (int y = 0; y < height; y++)
                {
                    int uvBase = (y >> 1) * uvStride;

                    for (int x = 0; x < width; x++)
                    {
                        output.SetR(x, y, Upsample(input.Buffer0[y * yStride + x]));

                        int uvOffs = uvBase + (x & ~1);

                        output.SetG(x, y, Upsample(input.Buffer1[uvOffs]));
                        output.SetB(x, y, Upsample(input.Buffer1[uvOffs + 1]));
                        output.SetA(x, y, 0x3ff);
                    }
                }
            }

            return(output);
        }
示例#8
0
        private unsafe static void WriteA8B8G8R8(ResourceManager rm, Surface input, ref OutputSurfaceConfig config, ref PlaneOffsets offsets)
        {
            int width  = input.Width;
            int height = input.Height;
            int stride = GetPitch(width, 4);

            int dstIndex = rm.BufferPool.Rent(height * stride, out Span <byte> dst);

            if (Sse2.IsSupported)
            {
                int widthTrunc = width & ~7;
                int strideGap  = stride - width * 4;

                fixed(Pixel *srcPtr = input.Data)
                {
                    Pixel *ip = srcPtr;

                    fixed(byte *dstPtr = dst)
                    {
                        byte *op = dstPtr;

                        for (int y = 0; y < height; y++, ip += input.Width)
                        {
                            int x = 0;

                            for (; x < widthTrunc; x += 8)
                            {
                                Vector128 <ushort> pixel12 = Sse2.LoadVector128((ushort *)(ip + (uint)x));
                                Vector128 <ushort> pixel34 = Sse2.LoadVector128((ushort *)(ip + (uint)x + 2));
                                Vector128 <ushort> pixel56 = Sse2.LoadVector128((ushort *)(ip + (uint)x + 4));
                                Vector128 <ushort> pixel78 = Sse2.LoadVector128((ushort *)(ip + (uint)x + 6));

                                pixel12 = Sse2.ShiftRightLogical(pixel12, 2);
                                pixel34 = Sse2.ShiftRightLogical(pixel34, 2);
                                pixel56 = Sse2.ShiftRightLogical(pixel56, 2);
                                pixel78 = Sse2.ShiftRightLogical(pixel78, 2);

                                Vector128 <byte> pixel1234 = Sse2.PackUnsignedSaturate(pixel12.AsInt16(), pixel34.AsInt16());
                                Vector128 <byte> pixel5678 = Sse2.PackUnsignedSaturate(pixel56.AsInt16(), pixel78.AsInt16());

                                Sse2.Store(op + 0x00, pixel1234);
                                Sse2.Store(op + 0x10, pixel5678);

                                op += 0x20;
                            }

                            for (; x < width; x++)
                            {
                                Pixel *px = ip + (uint)x;

                                *(op + 0) = Downsample(px->R);
                                *(op + 1) = Downsample(px->G);
                                *(op + 2) = Downsample(px->B);
                                *(op + 3) = Downsample(px->A);

                                op += 4;
                            }

                            op += strideGap;
                        }
                    }
                }
            }
            else
            {
                for (int y = 0; y < height; y++)
                {
                    int baseOffs = y * stride;

                    for (int x = 0; x < width; x++)
                    {
                        int offs = baseOffs + x * 4;

                        dst[offs + 0] = Downsample(input.GetR(x, y));
                        dst[offs + 1] = Downsample(input.GetG(x, y));
                        dst[offs + 2] = Downsample(input.GetB(x, y));
                        dst[offs + 3] = Downsample(input.GetA(x, y));
                    }
                }
            }

            bool outLinear = config.OutBlkKind == 0;

            int gobBlocksInY = 1 << config.OutBlkHeight;

            WriteBuffer(rm, dst, offsets.LumaOffset, outLinear, width, height, 4, gobBlocksInY);

            rm.BufferPool.Return(dstIndex);
        }
示例#9
0
        private unsafe static void WriteNv12(ResourceManager rm, Surface input, ref OutputSurfaceConfig config, ref PlaneOffsets offsets)
        {
            int gobBlocksInY = 1 << config.OutBlkHeight;

            bool outLinear = config.OutBlkKind == 0;

            int width   = Math.Min(config.OutLumaWidth + 1, input.Width);
            int height  = Math.Min(config.OutLumaHeight + 1, input.Height);
            int yStride = GetPitch(config.OutLumaWidth + 1, 1);

            int dstYIndex = rm.BufferPool.Rent((config.OutLumaHeight + 1) * yStride, out Span <byte> dstY);

            if (Sse41.IsSupported)
            {
                Vector128 <ushort> mask = Vector128.Create(0xffffUL).AsUInt16();

                int widthTrunc = width & ~0xf;
                int strideGap  = yStride - width;

                fixed(Pixel *srcPtr = input.Data)
                {
                    Pixel *ip = srcPtr;

                    fixed(byte *dstPtr = dstY)
                    {
                        byte *op = dstPtr;

                        for (int y = 0; y < height; y++, ip += input.Width)
                        {
                            int x = 0;

                            for (; x < widthTrunc; x += 16)
                            {
                                byte *baseOffset = (byte *)(ip + (ulong)(uint)x);

                                Vector128 <ushort> pixelp1 = Sse2.LoadVector128((ushort *)baseOffset);
                                Vector128 <ushort> pixelp2 = Sse2.LoadVector128((ushort *)(baseOffset + 0x10));
                                Vector128 <ushort> pixelp3 = Sse2.LoadVector128((ushort *)(baseOffset + 0x20));
                                Vector128 <ushort> pixelp4 = Sse2.LoadVector128((ushort *)(baseOffset + 0x30));
                                Vector128 <ushort> pixelp5 = Sse2.LoadVector128((ushort *)(baseOffset + 0x40));
                                Vector128 <ushort> pixelp6 = Sse2.LoadVector128((ushort *)(baseOffset + 0x50));
                                Vector128 <ushort> pixelp7 = Sse2.LoadVector128((ushort *)(baseOffset + 0x60));
                                Vector128 <ushort> pixelp8 = Sse2.LoadVector128((ushort *)(baseOffset + 0x70));

                                pixelp1 = Sse2.And(pixelp1, mask);
                                pixelp2 = Sse2.And(pixelp2, mask);
                                pixelp3 = Sse2.And(pixelp3, mask);
                                pixelp4 = Sse2.And(pixelp4, mask);
                                pixelp5 = Sse2.And(pixelp5, mask);
                                pixelp6 = Sse2.And(pixelp6, mask);
                                pixelp7 = Sse2.And(pixelp7, mask);
                                pixelp8 = Sse2.And(pixelp8, mask);

                                Vector128 <ushort> pixelq1 = Sse41.PackUnsignedSaturate(pixelp1.AsInt32(), pixelp2.AsInt32());
                                Vector128 <ushort> pixelq2 = Sse41.PackUnsignedSaturate(pixelp3.AsInt32(), pixelp4.AsInt32());
                                Vector128 <ushort> pixelq3 = Sse41.PackUnsignedSaturate(pixelp5.AsInt32(), pixelp6.AsInt32());
                                Vector128 <ushort> pixelq4 = Sse41.PackUnsignedSaturate(pixelp7.AsInt32(), pixelp8.AsInt32());

                                pixelq1 = Sse41.PackUnsignedSaturate(pixelq1.AsInt32(), pixelq2.AsInt32());
                                pixelq2 = Sse41.PackUnsignedSaturate(pixelq3.AsInt32(), pixelq4.AsInt32());

                                pixelq1 = Sse2.ShiftRightLogical(pixelq1, 2);
                                pixelq2 = Sse2.ShiftRightLogical(pixelq2, 2);

                                Vector128 <byte> pixel = Sse2.PackUnsignedSaturate(pixelq1.AsInt16(), pixelq2.AsInt16());

                                Sse2.Store(op, pixel);

                                op += 0x10;
                            }

                            for (; x < width; x++)
                            {
                                Pixel *px = ip + (uint)x;

                                *op++ = Downsample(px->R);
                            }

                            op += strideGap;
                        }
                    }
                }
            }
            else
            {
                for (int y = 0; y < height; y++)
                {
                    for (int x = 0; x < width; x++)
                    {
                        dstY[y * yStride + x] = Downsample(input.GetR(x, y));
                    }
                }
            }

            WriteBuffer(
                rm,
                dstY,
                offsets.LumaOffset,
                outLinear,
                config.OutLumaWidth + 1,
                config.OutLumaHeight + 1,
                1,
                gobBlocksInY);

            rm.BufferPool.Return(dstYIndex);

            int uvWidth  = Math.Min(config.OutChromaWidth + 1, (width + 1) >> 1);
            int uvHeight = Math.Min(config.OutChromaHeight + 1, (height + 1) >> 1);
            int uvStride = GetPitch(config.OutChromaWidth + 1, 2);

            int dstUvIndex = rm.BufferPool.Rent((config.OutChromaHeight + 1) * uvStride, out Span <byte> dstUv);

            if (Sse2.IsSupported)
            {
                int widthTrunc = uvWidth & ~7;
                int strideGap  = uvStride - uvWidth * 2;

                fixed(Pixel *srcPtr = input.Data)
                {
                    Pixel *ip = srcPtr;

                    fixed(byte *dstPtr = dstUv)
                    {
                        byte *op = dstPtr;

                        for (int y = 0; y < uvHeight; y++, ip += input.Width * 2)
                        {
                            int x = 0;

                            for (; x < widthTrunc; x += 8)
                            {
                                byte *baseOffset = (byte *)ip + (ulong)(uint)x * 16;

                                Vector128 <uint> pixel1 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x02));
                                Vector128 <uint> pixel2 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x12));
                                Vector128 <uint> pixel3 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x22));
                                Vector128 <uint> pixel4 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x32));
                                Vector128 <uint> pixel5 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x42));
                                Vector128 <uint> pixel6 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x52));
                                Vector128 <uint> pixel7 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x62));
                                Vector128 <uint> pixel8 = Sse2.LoadScalarVector128((uint *)(baseOffset + 0x72));

                                Vector128 <uint> pixel12 = Sse2.UnpackLow(pixel1, pixel2);
                                Vector128 <uint> pixel34 = Sse2.UnpackLow(pixel3, pixel4);
                                Vector128 <uint> pixel56 = Sse2.UnpackLow(pixel5, pixel6);
                                Vector128 <uint> pixel78 = Sse2.UnpackLow(pixel7, pixel8);

                                Vector128 <ulong> pixel1234 = Sse2.UnpackLow(pixel12.AsUInt64(), pixel34.AsUInt64());
                                Vector128 <ulong> pixel5678 = Sse2.UnpackLow(pixel56.AsUInt64(), pixel78.AsUInt64());

                                pixel1234 = Sse2.ShiftRightLogical(pixel1234, 2);
                                pixel5678 = Sse2.ShiftRightLogical(pixel5678, 2);

                                Vector128 <byte> pixel = Sse2.PackUnsignedSaturate(pixel1234.AsInt16(), pixel5678.AsInt16());

                                Sse2.Store(op, pixel);

                                op += 0x10;
                            }

                            for (; x < uvWidth; x++)
                            {
                                Pixel *px = ip + (uint)(x << 1);

                                *op++ = Downsample(px->G);
                                *op++ = Downsample(px->B);
                            }

                            op += strideGap;
                        }
                    }
                }
            }
            else
            {
                for (int y = 0; y < uvHeight; y++)
                {
                    for (int x = 0; x < uvWidth; x++)
                    {
                        int xx = x << 1;
                        int yy = y << 1;

                        int uvOffs = y * uvStride + xx;

                        dstUv[uvOffs + 0] = Downsample(input.GetG(xx, yy));
                        dstUv[uvOffs + 1] = Downsample(input.GetB(xx, yy));
                    }
                }
            }

            WriteBuffer(
                rm,
                dstUv,
                offsets.ChromaUOffset,
                outLinear,
                config.OutChromaWidth + 1,
                config.OutChromaHeight + 1, 2,
                gobBlocksInY);

            rm.BufferPool.Return(dstUvIndex);
        }
示例#10
0
        public void SetPixel(int x, int y, Pixel colour)
        {
            Pixel *pixel = PixelAt(x, y);

            *pixel = colour;
        }
        public static double GetDrawingFitness(Bitmap newBitmap, Bitmap sourceBitmap)
        {
            double error = 0;

            BitmapData newBits = newBitmap.LockBits(
                new Rectangle(0, 0, Tools.MaxWidth, Tools.MaxHeight),
                ImageLockMode.ReadOnly,
                PixelFormat.Format32bppArgb);

            BitmapData sourceBits = sourceBitmap.LockBits(
                new Rectangle(0, 0, Tools.MaxWidth, Tools.MaxHeight),
                ImageLockMode.ReadOnly,
                PixelFormat.Format32bppArgb);

            unchecked
            {
                unsafe
                {
                    Pixel *p1        = (Pixel *)newBits.Scan0.ToPointer();
                    Pixel *p2        = (Pixel *)sourceBits.Scan0.ToPointer();
                    int    numPixels = newBits.Width * newBits.Height;
                    for (int i = 0; i < numPixels; i += 1)
                    {
                        int r = p1->R - p2->R;
                        int g = p1->G - p2->G;
                        int b = p1->B - p2->B;
                        error += r * r + g * g + b * b;
                        p1    += 1;
                        p2    += 1;
                    }

                    int x1 = newBits.Width / 4;
                    int x2 = newBits.Width / 4 * 3;
                    int y1 = newBits.Height / 4;
                    int y2 = newBits.Height / 4 * 3;

                    int heightOfCenter = y2 - y1;
                    int widthOfCenter  = x2 - x1;

                    p1 += y1 * newBits.Width;
                    p2 += y1 * newBits.Width;
                    for (int y = y1; y < y2; y++)
                    {
                        p1  = (Pixel *)newBits.Scan0.ToPointer();
                        p2  = (Pixel *)sourceBits.Scan0.ToPointer();
                        p1 += y * newBits.Width + x1;
                        p2 += y * newBits.Width + x1;

                        for (int x = x1; x < x2; x++)
                        {
                            int r = p1->R - p2->R;
                            int g = p1->G - p2->G;
                            int b = p1->B - p2->B;
                            error += r * r + g * g + b * b;
                            p1    += 1;
                            p2    += 1;
                        }
                    }
                }
            }
            sourceBitmap.UnlockBits(sourceBits);
            newBitmap.UnlockBits(newBits);

            return(error);
        }
示例#12
0
 public Color GetPixel(int x, int y)
 {
     _currentPixel = (Pixel*) (Pointer + y*_width + x*sizeof (Pixel));
     return Color.FromArgb(_currentPixel->Alpha, _currentPixel->Red, _currentPixel->Green, _currentPixel->Blue);
 }
示例#13
0
 public Color GetPixel(int x, int y)
 {
     _currentPixel = (Pixel *)(Pointer + y * _width + x * sizeof(Pixel));
     return(Color.FromArgb(_currentPixel->Alpha, _currentPixel->Red, _currentPixel->Green, _currentPixel->Blue));
 }