/// <summary> /// Initializes a new instance of the <see cref="VncFramebuffer"/> class. /// </summary> /// <param name="name">The framebuffer name. Many VNC clients set their titlebar to this name.</param> /// <param name="width">The framebuffer width.</param> /// <param name="height">The framebuffer height.</param> /// <param name="pixelFormat">The framebuffer pixel format.</param> public VncFramebuffer(string name, int width, int height, VncPixelFormat pixelFormat) { Throw.If.Null(name, "name"); Throw.If.Negative(width, "width").Negative(height, "height"); Throw.If.Null(pixelFormat, "pixelFormat"); this.Name = name; this.Width = width; this.Height = height; this.PixelFormat = pixelFormat; this.Stride = this.PixelFormat.BytesPerPixel * this.Width; this.SyncRoot = new object(); this.buffer = new byte[this.Width * this.Height * this.PixelFormat.BytesPerPixel]; }
/// <summary> /// <para> /// Copies pixels. A format conversion is performed if necessary. /// </para> /// <para> /// Be sure to lock <see cref="VncFramebuffer.SyncRoot"/> first to avoid tearing, /// if the connection is active. /// </para> /// </summary> /// <param name="source">A pointer to the upper-left corner of the source.</param> /// <param name="sourceStride">The offset in the source between one Y coordinate and the next.</param> /// <param name="sourceFormat">The source pixel format.</param> /// <param name="sourceRectangle">The rectangle in the source to decode.</param> /// <param name="target">A pointer to the upper-left corner of the target.</param> /// <param name="targetStride">The offset in the target between one Y coordinate and the next.</param> /// <param name="targetFormat">The target pixel format.</param> /// <param name="targetX">The X coordinate in the target that the leftmost pixel should be placed into.</param> /// <param name="targetY">The Y coordinate in the target that the topmost pixel should be placed into.</param> public static unsafe void Copy( IntPtr source, int sourceStride, VncPixelFormat sourceFormat, VncRectangle sourceRectangle, IntPtr target, int targetStride, VncPixelFormat targetFormat, int targetX = 0, int targetY = 0) { Throw.If.True(source == IntPtr.Zero, "source").True(target == IntPtr.Zero, "target"); Throw.If.Null(sourceFormat, "sourceFormat").Null(targetFormat, "targetFormat"); if (sourceRectangle.IsEmpty) { return; } int x = sourceRectangle.X, w = sourceRectangle.Width; int y = sourceRectangle.Y, h = sourceRectangle.Height; var sourceData = (byte*)(void*)source + (y * sourceStride) + (x * sourceFormat.BytesPerPixel); var targetData = (byte*)(void*)target + (targetY * targetStride) + (targetX * targetFormat.BytesPerPixel); if (sourceFormat.Equals(targetFormat)) { for (int iy = 0; iy < h; iy++) { if (sourceFormat.BytesPerPixel == 4) { uint* sourceDataX0 = (uint*)sourceData, targetDataX0 = (uint*)targetData; for (int ix = 0; ix < w; ix++) { *targetDataX0++ = *sourceDataX0++; } } else { int bytes = w * sourceFormat.BytesPerPixel; byte* sourceDataX0 = (byte*)sourceData, targetDataX0 = (byte*)targetData; for (int ib = 0; ib < bytes; ib++) { *targetDataX0++ = *sourceDataX0++; } } sourceData += sourceStride; targetData += targetStride; } } }
/// <summary> /// Copies pixels between two byte arrays. A format conversion is performed if necessary. /// /// Be sure to lock <see cref="VncFramebuffer.SyncRoot"/> first to avoid tearing, /// if the connection is active. /// </summary> /// <param name="source">A pointer to the upper-left corner of the source.</param> /// <param name="sourceWidth">The width of the source image.</param> /// <param name="sourceStride">The offset in the source between one Y coordinate and the next.</param> /// <param name="sourceFormat">The source pixel format.</param> /// <param name="sourceRectangle">The rectangle in the source to decode.</param> /// <param name="target">A pointer to the upper-left corner of the target.</param> /// <param name="targetWidth">The width of the target image.</param> /// <param name="targetStride">The offset in the target between one Y coordinate and the next.</param> /// <param name="targetFormat">The target pixel format.</param> /// <param name="targetX">The X coordinate in the target that the leftmost pixel should be placed into.</param> /// <param name="targetY">The Y coordinate in the target that the topmost pixel should be placed into.</param> public static unsafe void Copy( byte[] source, int sourceWidth, int sourceStride, VncPixelFormat sourceFormat, VncRectangle sourceRectangle, byte[] target, int targetWidth, int targetStride, VncPixelFormat targetFormat, int targetX = 0, int targetY = 0) { Throw.If.Null(source, "source").Null(target, "target"); if (sourceRectangle.IsEmpty) { return; } int x = sourceRectangle.X, w = sourceRectangle.Width; int y = sourceRectangle.Y, h = sourceRectangle.Height; if (sourceFormat.Equals(targetFormat)) { if (sourceRectangle.Width == sourceWidth && sourceWidth == targetWidth && sourceStride == targetStride) { int sourceStart = sourceStride * y; int length = targetStride * h; Buffer.BlockCopy(source, sourceStart, target, 0, length); } else { for (int iy = 0; iy < h; iy++) { int sourceStart = (sourceStride * (iy + y)) + (x * sourceFormat.BitsPerPixel / 8); int targetStart = targetStride * iy; int length = w * sourceFormat.BitsPerPixel / 8; Buffer.BlockCopy(source, sourceStart, target, targetStart, length); } } } }