C# MarshalledImage类代码示例

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本文整理汇总了C#中MarshalledImage类的典型用法代码示例。如果您正苦于以下问题：C# MarshalledImage类的具体用法？C# MarshalledImage怎么用？C# MarshalledImage使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

MarshalledImage类属于命名空间，在下文中一共展示了MarshalledImage类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C#代码示例。

示例1: Encode

        // encode 
        public static byte[] Encode(libsecondlife.Image image, bool lossless)
        {
            if (
                (image.Channels & ImageChannels.Color) == 0 ||
                ((image.Channels & ImageChannels.Bump) != 0 && (image.Channels & ImageChannels.Alpha) == 0))
                throw new ArgumentException("JPEG2000 encoding is not supported for this channel combination");
            
            MarshalledImage marshalled = new MarshalledImage();

            // allocate and copy to input buffer
            marshalled.width = image.Width;
            marshalled.height = image.Height;
            marshalled.components = 3;
            if ((image.Channels & ImageChannels.Alpha) != 0) marshalled.components++;
            if ((image.Channels & ImageChannels.Bump) != 0) marshalled.components++;

            if (!LibslAllocDecoded(ref marshalled))
                throw new Exception("LibslAllocDecoded failed");

            int n = image.Width * image.Height;

            if ((image.Channels & ImageChannels.Color) != 0)
            {
                Marshal.Copy(image.Red, 0, marshalled.decoded, n);
                Marshal.Copy(image.Green, 0, (IntPtr)(marshalled.decoded.ToInt64() + n), n);
                Marshal.Copy(image.Blue, 0, (IntPtr)(marshalled.decoded.ToInt64() + n * 2), n);
            }

            if ((image.Channels & ImageChannels.Alpha) != 0) Marshal.Copy(image.Alpha, 0, (IntPtr)(marshalled.decoded.ToInt64() + n * 3), n);
            if ((image.Channels & ImageChannels.Bump) != 0) Marshal.Copy(image.Bump, 0, (IntPtr)(marshalled.decoded.ToInt64() + n * 4), n);

            // codec will allocate output buffer
            if (!LibslEncode(ref marshalled, lossless))
                throw new Exception("LibslEncode failed");

            // copy output buffer
            byte[] encoded = new byte[marshalled.length];
            Marshal.Copy(marshalled.encoded, encoded, 0, marshalled.length);

            // free buffers
            LibslFree(ref marshalled);

            return encoded;
        }

开发者ID:RavenB，项目名称:gridsearch，代码行数:45，代码来源:OpenJPEG.cs

示例2: Decode

        public static libsecondlife.Image Decode(byte[] encoded)
        {
            MarshalledImage marshalled = new MarshalledImage();

            // allocate and copy to input buffer
            marshalled.length = encoded.Length;
            LibslAllocEncoded(ref marshalled);
            Marshal.Copy(encoded, 0, marshalled.encoded, encoded.Length);

            // codec will allocate output buffer
            LibslDecode(ref marshalled);

            libsecondlife.Image image;
            int n = marshalled.width * marshalled.height;

            switch (marshalled.components)
            {
                case 1: // grayscale
                    image = new libsecondlife.Image(marshalled.width, marshalled.height, ImageChannels.Color);
                    Marshal.Copy(marshalled.decoded, image.Red, 0, n);
                    Array.Copy(image.Red, image.Green, n);
                    Array.Copy(image.Red, image.Blue, n);
                    break;

                case 2: // grayscale + alpha
                    image = new libsecondlife.Image(marshalled.width, marshalled.height, ImageChannels.Color | ImageChannels.Alpha);
                    Marshal.Copy(marshalled.decoded, image.Red, 0, n);
                    Array.Copy(image.Red, image.Green, n);
                    Array.Copy(image.Red, image.Blue, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n), image.Alpha, 0, n);
                    break;

                case 3: // RGB
                    image = new libsecondlife.Image(marshalled.width, marshalled.height, ImageChannels.Color);
                    Marshal.Copy(marshalled.decoded, image.Red, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n), image.Green, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n * 2), image.Blue, 0, n);
                    break;

                case 4: // RGBA
                    image = new libsecondlife.Image(marshalled.width, marshalled.height, ImageChannels.Color | ImageChannels.Alpha);
                    Marshal.Copy(marshalled.decoded, image.Red, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n), image.Green, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n * 2), image.Blue, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n * 3), image.Alpha, 0, n);
                    break;

                case 5: // RGBBA
                    image = new libsecondlife.Image(marshalled.width, marshalled.height, ImageChannels.Color | ImageChannels.Alpha | ImageChannels.Bump);
                    Marshal.Copy(marshalled.decoded, image.Red, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n), image.Green, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n * 2), image.Blue, 0, n);
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n * 3), image.Bump, 0, n); // bump comes before alpha in 5 channel encode
                    Marshal.Copy((IntPtr)(marshalled.decoded.ToInt64() + n * 4), image.Alpha, 0, n);
                    break;

                default:
                    throw new Exception("Decoded image with unhandled number of components (" + marshalled.components + ")");
            }

            // free buffers
            LibslFree(ref marshalled);

            return image;
        }

开发者ID:RavenB，项目名称:gridsearch，代码行数:65，代码来源:OpenJPEG.cs