/// <summary>
/// Function to enumerate raw input devices.
/// </summary>
/// <returns>An array of raw input device structures.</returns>
public unsafe static RAWINPUTDEVICELIST[] EnumerateInputDevices()
{
int deviceCount = 0;
int structSize = DirectAccess.SizeOf <RAWINPUTDEVICELIST>();
if (GetRawInputDeviceList(IntPtr.Zero, ref deviceCount, structSize) < 0)
{
throw new Win32Exception();
}
if (deviceCount == 0)
{
return(new RAWINPUTDEVICELIST[0]);
}
RAWINPUTDEVICELIST *deviceListPtr = stackalloc RAWINPUTDEVICELIST[deviceCount];
if (GetRawInputDeviceList((IntPtr)deviceListPtr, ref deviceCount, structSize) < 0)
{
throw new Win32Exception();
}
var result = new RAWINPUTDEVICELIST[deviceCount];
fixed(RAWINPUTDEVICELIST *resultPtr = &result[0])
{
DirectAccess.MemoryCopy(resultPtr, deviceListPtr, structSize * deviceCount);
}
return(result);
}
/// <summary>
/// Function to retrieve device information.
/// </summary>
/// <param name="deviceHandle">Device handle.</param>
/// <returns>The device information structure.</returns>
public static unsafe RID_DEVICE_INFO GetDeviceInfo(IntPtr deviceHandle)
{
int dataSize = DirectAccess.SizeOf <RID_DEVICE_INFO>();
byte *data = stackalloc byte[dataSize];
if (GetRawInputDeviceInfo(deviceHandle, RawInputCommand.DeviceInfo, (IntPtr)data, ref dataSize) < 0)
{
throw new Win32Exception();
}
RID_DEVICE_INFO result;
DirectAccess.MemoryCopy(&result, data, dataSize);
return(result);
}
private readonly int _headerSize = DirectAccess.SizeOf <RAWINPUTHEADER>(); // Size of the input data in bytes.
#endregion
#region IMessageFilter Members
/// <summary>
/// Filters out a message before it is dispatched.
/// </summary>
/// <param name="m">The message to be dispatched. You cannot modify this message.</param>
/// <returns>
/// true to filter the message and stop it from being dispatched; false to allow the message to continue to the next filter or control.
/// </returns>
public unsafe bool PreFilterMessage(ref Message m)
{
int dataSize = 0;
// Get data size.
int result = Win32API.GetRawInputData(m.LParam, RawInputCommand.Input, IntPtr.Zero, ref dataSize, _headerSize);
if (result == -1)
{
throw new GorgonException(GorgonResult.CannotRead, Resources.GORINP_RAW_CANNOT_READ_DATA);
}
// Get actual data.
var rawInputPtr = stackalloc byte[dataSize];
result = Win32API.GetRawInputData(m.LParam,
RawInputCommand.Input,
(IntPtr)rawInputPtr,
ref dataSize,
_headerSize);
if ((result == -1) ||
(result != dataSize))
{
throw new GorgonException(GorgonResult.CannotRead, Resources.GORINP_RAW_CANNOT_READ_DATA);
}
var rawInput = *((RAWINPUT *)rawInputPtr);
switch (rawInput.Header.Type)
{
case RawInputType.Mouse:
if (RawInputPointingDeviceData != null)
{
RawInputPointingDeviceData(this,
new RawInputPointingDeviceEventArgs(rawInput.Header.Device,
ref rawInput.Union.Mouse));
}
break;
case RawInputType.Keyboard:
if (RawInputKeyboardData != null)
{
RawInputKeyboardData(this,
new RawInputKeyboardEventArgs(rawInput.Header.Device,
ref rawInput.Union.Keyboard));
}
break;
default:
if (RawInputHIDData != null)
{
var HIDData = new byte[rawInput.Union.HID.Size * rawInput.Union.HID.Count];
var hidDataPtr = rawInputPtr + _headerSize + 8;
fixed(byte *buffer = &HIDData[0])
{
DirectAccess.MemoryCopy(buffer, hidDataPtr, HIDData.Length);
}
RawInputHIDData(this,
new RawInputHIDEventArgs(rawInput.Header.Device, ref rawInput.Union.HID, HIDData));
}
break;
}
return(false);
}
/// <summary>
/// Function to copy (or update in-place) a line with opaque alpha substituion (if required).
/// </summary>
/// <param name="src">The pointer to the source data.</param>
/// <param name="srcPitch">The pitch of the source data.</param>
/// <param name="dest">The pointer to the destination data.</param>
/// <param name="destPitch">The pitch of the destination data.</param>
/// <param name="format">Format of the destination buffer.</param>
/// <param name="bitFlags">Image bit conversion control flags.</param>
/// <exception cref="System.ArgumentException">Thrown when the <paramref name="format"/> parameter is Unknown.</exception>
/// <exception cref="System.ArgumentNullException">Thrown when the <paramref name="src"/> or the <paramref name="dest"/> parameter is NULL.</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown when the <paramref name="srcPitch"/> or the <paramref name="destPitch"/> parameter is less than 0.</exception>
/// <remarks>Use this method to copy a single scanline of an image and (optionally) set an opaque constant alpha value.</remarks>
protected unsafe void CopyScanline(void *src, int srcPitch, void *dest, int destPitch, BufferFormat format, ImageBitFlags bitFlags)
{
if (src == null)
{
throw new ArgumentNullException("src");
}
if (dest == null)
{
throw new ArgumentNullException("dest");
}
if (format == BufferFormat.Unknown)
{
throw new ArgumentException(string.Format(Resources.GORGFX_FORMAT_NOT_SUPPORTED, BufferFormat.Unknown),
"format");
}
int size = (src == dest) ? destPitch : (srcPitch.Min(destPitch));
if ((bitFlags & ImageBitFlags.OpaqueAlpha) == ImageBitFlags.OpaqueAlpha)
{
// Do a straight copy.
switch (format)
{
case BufferFormat.R32G32B32A32:
case BufferFormat.R32G32B32A32_Float:
case BufferFormat.R32G32B32A32_UInt:
case BufferFormat.R32G32B32A32_Int:
{
uint alpha = (format == BufferFormat.R32G32B32_Float) ? 0x3F800000
: ((format == BufferFormat.R32G32B32_Int) ? 0x7FFFFFFF : 0xFFFFFFFF);
var srcPtr = (uint *)src;
var destPtr = (uint *)dest;
for (int i = 0; i < size; i += 16)
{
// If not in-place copy, then copy from the source.
if (src != dest)
{
*destPtr = *srcPtr;
srcPtr += 4;
}
*destPtr += 3;
*(destPtr++) = alpha;
}
}
return;
case BufferFormat.R16G16B16A16:
case BufferFormat.R16G16B16A16_Float:
case BufferFormat.R16G16B16A16_UIntNormal:
case BufferFormat.R16G16B16A16_UInt:
case BufferFormat.R16G16B16A16_IntNormal:
case BufferFormat.R16G16B16A16_Int:
{
ushort alpha = 0xFFFF;
switch (format)
{
case BufferFormat.R16G16B16A16_Float:
alpha = 0x3C00;
break;
case BufferFormat.R16G16B16A16_Int:
case BufferFormat.R16G16B16A16_IntNormal:
alpha = 0x7FFF;
break;
}
var srcPtr = (ushort *)src;
var destPtr = (ushort *)dest;
for (int i = 0; i < size; i += 8)
{
// If not in-place copy, then copy from the source.
if (src != dest)
{
*destPtr = *srcPtr;
srcPtr += 4;
}
*destPtr += 3;
*(destPtr++) = alpha;
}
}
return;
case BufferFormat.R10G10B10A2:
case BufferFormat.R10G10B10A2_UIntNormal:
case BufferFormat.R10G10B10A2_UInt:
case BufferFormat.R10G10B10_XR_BIAS_A2_UIntNormal:
{
var srcPtr = (uint *)src;
var destPtr = (uint *)dest;
for (int i = 0; i < size; i += 4)
{
// If not in-place copy, then copy from the source.
if (src != dest)
{
*destPtr = (*srcPtr) & 0x3FFFFFFF;
srcPtr++;
}
*destPtr |= 0xC0000000;
destPtr++;
}
}
return;
case BufferFormat.R8G8B8A8:
case BufferFormat.R8G8B8A8_UIntNormal:
case BufferFormat.R8G8B8A8_UIntNormal_sRGB:
case BufferFormat.R8G8B8A8_UInt:
case BufferFormat.R8G8B8A8_IntNormal:
case BufferFormat.R8G8B8A8_Int:
case BufferFormat.B8G8R8A8_UIntNormal:
case BufferFormat.B8G8R8A8:
case BufferFormat.B8G8R8A8_UIntNormal_sRGB:
{
uint alpha = ((format == BufferFormat.R8G8B8A8_Int) || (format == BufferFormat.R8G8B8A8_IntNormal)) ? 0x7F000000 : 0xFF000000;
var srcPtr = (uint *)src;
var destPtr = (uint *)dest;
for (int i = 0; i < size; i += 4)
{
// If not in-place copy, then copy from the source.
if (src != dest)
{
*destPtr = (*srcPtr) & 0xFFFFFF;
srcPtr++;
}
*destPtr |= alpha;
destPtr++;
}
}
return;
case BufferFormat.B5G5R5A1_UIntNormal:
{
var srcPtr = (ushort *)src;
var destPtr = (ushort *)dest;
for (int i = 0; i < size; i += 2)
{
// If not in-place copy, then copy from the source.
if (src != dest)
{
*(destPtr++) = (ushort)((*srcPtr++) | 0x8000);
}
else
{
*(destPtr++) |= 0x8000;
}
}
}
return;
case BufferFormat.A8_UIntNormal:
DirectAccess.FillMemory(dest, 0xFF, size);
return;
}
}
// Copy if not doing an in-place update.
if (dest != src)
{
DirectAccess.MemoryCopy(dest, src, size);
}
}
/// <summary>
/// Function to copy (or update in-place) with bits swizzled to match another format.
/// </summary>
/// <param name="src">The pointer to the source data.</param>
/// <param name="srcPitch">The pitch of the source data.</param>
/// <param name="dest">The pointer to the destination data.</param>
/// <param name="destPitch">The pitch of the destination data.</param>
/// <param name="format">Format of the destination buffer.</param>
/// <param name="bitFlags">Image bit conversion control flags.</param>
/// <exception cref="System.ArgumentException">Thrown when the <paramref name="format"/> parameter is Unknown.</exception>
/// <exception cref="System.ArgumentNullException">Thrown when the <paramref name="src"/> or the <paramref name="dest"/> parameter is NULL.</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown when the <paramref name="srcPitch"/> or the <paramref name="destPitch"/> parameter is less than 0.</exception>
/// <remarks>Use this method to copy a single scanline and swizzle the bits of an image and (optionally) set an opaque constant alpha value.</remarks>
protected unsafe void SwizzleScanline(void *src, int srcPitch, void *dest, int destPitch, BufferFormat format, ImageBitFlags bitFlags)
{
int size = srcPitch.Min(destPitch);
uint r, g, b, a, pixel;
if (src == null)
{
throw new ArgumentNullException("src");
}
if (dest == null)
{
throw new ArgumentNullException("dest");
}
if (format == BufferFormat.Unknown)
{
throw new ArgumentException(string.Format(Resources.GORGFX_FORMAT_NOT_SUPPORTED, BufferFormat.Unknown),
"format");
}
var srcPtr = (uint *)src;
var destPtr = (uint *)dest;
switch (format)
{
case BufferFormat.R10G10B10A2:
case BufferFormat.R10G10B10A2_UInt:
case BufferFormat.R10G10B10A2_UIntNormal:
case BufferFormat.R10G10B10_XR_BIAS_A2_UIntNormal:
for (int i = 0; i < size; i += 4)
{
if (src != dest)
{
pixel = *(srcPtr++);
}
else
{
pixel = *(destPtr);
}
r = ((pixel & 0x3FF00000) >> 20);
g = (pixel & 0x000FFC00);
b = ((pixel & 0x000003FF) << 20);
a = ((bitFlags & ImageBitFlags.OpaqueAlpha) == ImageBitFlags.OpaqueAlpha) ? 0xC0000000 : pixel & 0xC0000000;
*destPtr = r | g | b | a;
destPtr++;
}
return;
case BufferFormat.R8G8B8A8:
case BufferFormat.R8G8B8A8_UIntNormal:
case BufferFormat.R8G8B8A8_UIntNormal_sRGB:
case BufferFormat.B8G8R8A8_UIntNormal:
case BufferFormat.B8G8R8X8_UIntNormal:
case BufferFormat.B8G8R8A8:
case BufferFormat.B8G8R8A8_UIntNormal_sRGB:
case BufferFormat.B8G8R8X8:
case BufferFormat.B8G8R8X8_UIntNormal_sRGB:
for (int i = 0; i < size; i += 4)
{
if (src != dest)
{
pixel = *(srcPtr++);
}
else
{
pixel = *(destPtr);
}
r = ((pixel & 0xFF0000) >> 16);
g = (pixel & 0x00FF00);
b = ((pixel & 0x0000FF) << 16);
a = ((bitFlags & ImageBitFlags.OpaqueAlpha) == ImageBitFlags.OpaqueAlpha) ? 0xFF000000 : pixel & 0xFF000000;
*destPtr = r | g | b | a;
destPtr++;
}
return;
}
if (src != dest)
{
DirectAccess.MemoryCopy(dest, src, size);
}
}
/// <summary>
/// Function to copy the memory contents from this pointer to another.
/// </summary>
/// <param name="destination">Destination buffer.</param>
/// <param name="source">Source buffer.</param>
/// <param name="size">Size of the data to copy, in bytes.</param>
/// <remarks>Since a pointer doesn't have a size associated with it, care must be taken to not overstep the bounds of the data pointed at by the pointer.</remarks>
/// <exception cref="System.ArgumentNullException">Thrown when the destination pointer is NULL (Nothing in VB.Net).</exception>
public static void CopyTo(this IntPtr source, IntPtr destination, int size)
{
DirectAccess.MemoryCopy(destination, source, size);
}
/// <summary>
/// Function to copy the image buffer data from this buffer into another.
/// </summary>
/// <param name="buffer">The buffer to copy into.</param>
/// <param name="sourceRegion">[Optional] The region in the source to copy.</param>
/// <param name="destX">[Optional] Horizontal offset in the destination buffer.</param>
/// <param name="destY">[Optional] Vertical offset in the destination buffer.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the <paramref name="buffer" /> parameter is NULL (Nothing in VB.Net).</exception>
/// <exception cref="System.ArgumentException">Thrown when the <paramref name="buffer" /> is not the same format as this buffer.</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Thrown when the source region does not fit within the bounds of this buffer.</exception>
/// <remarks>
/// This method will copy the contents of this buffer into another buffer and will provide clipping to handle cases where the buffer or <paramref name="sourceRegion" /> is mismatched with the
/// destination size.
/// <para>Users may define an area on this buffer to copy by specifying the <paramref name="sourceRegion" /> parameter. If NULL (Nothing in VB.Net) is passed to this parameter, then the
/// entire buffer will be copied to the destination.</para><para>An offset into the destination buffer may also be specified to relocate the data copied from this buffer into the destination. Clipping will be applied if the offset pushes the
/// source data outside of the boundaries of the destination buffer.</para><para>The destination buffer must be the same format as the source buffer. If it is not, then an exception will be thrown.</para>
/// <para>The <paramref name="buffer"/> parameter must not be the same as the this buffer. An exception will be thrown if an attempt to copy this buffer into itself is made.</para>
/// <para>If the source region does not fit within the bounds of this buffer, then an exception will be thrown.</para>
/// </remarks>
public unsafe void CopyTo(GorgonImageBuffer buffer, Rectangle?sourceRegion = null, int destX = 0, int destY = 0)
{
var sourceBufferDims = new Rectangle(0, 0, Width, Height);
Rectangle srcRegion = sourceRegion != null ? sourceRegion.Value : sourceBufferDims;
if ((buffer == null) ||
(buffer.Data == null) ||
(buffer.Data.Length == 0))
{
throw new ArgumentNullException("buffer");
}
if ((buffer == this) ||
(buffer.Data.UnsafePointer == Data.UnsafePointer))
{
throw new ArgumentException(Resources.GORGFX_IMAGE_BUFFER_CANT_BE_SAME, "buffer");
}
if (buffer.Format != Format)
{
throw new ArgumentException(Resources.GORGFX_IMAGE_MUST_BE_SAME_FORMAT, "buffer");
}
if (!sourceBufferDims.Contains(srcRegion))
{
throw new ArgumentOutOfRangeException("sourceRegion");
}
// If we try to place this image outside of the target buffer, then do nothing.
if ((destX >= buffer.Width) ||
(destY >= buffer.Height))
{
return;
}
// Adjust in case we're trying to move off the target.
if (destX < 0)
{
srcRegion.X -= destX;
srcRegion.Width += destX;
destX = 0;
}
if (destY < 0)
{
srcRegion.Y -= destY;
srcRegion.Height += destY;
destY = 0;
}
// Ensure that the regions actually fit within their respective buffers.
srcRegion = Rectangle.FromLTRB(srcRegion.X.Max(0), srcRegion.Y.Max(0), srcRegion.Right.Min(Width), srcRegion.Bottom.Min(Height));
Rectangle dstRegion = Rectangle.FromLTRB(destX, destY, (destX + buffer.Width).Min(buffer.Width), (destY + buffer.Height).Min(buffer.Height));
// If the source/dest region is empty, then we have nothing to copy.
if ((srcRegion.IsEmpty) ||
(dstRegion.IsEmpty) ||
(dstRegion.Right < 0) ||
(dstRegion.Bottom < 0))
{
return;
}
// If the buffers are identical in dimensions and have no offset, then just do a straight copy.
if (srcRegion == dstRegion)
{
DirectAccess.MemoryCopy(buffer.Data.UnsafePointer, Data.UnsafePointer, (int)Data.Length);
return;
}
// Find out how many bytes each pixel occupies.
int dataSize = PitchInformation.RowPitch / Width;
int srcLineSize = dataSize * srcRegion.Width; // Number of source bytes/scanline.
var srcData = ((byte *)Data.UnsafePointer) + (srcRegion.Y * PitchInformation.RowPitch) + (srcRegion.X * dataSize);
int dstLineSize = dataSize * dstRegion.Width; // Number of dest bytes/scanline.
var dstData = ((byte *)buffer.Data.UnsafePointer) + (dstRegion.Y * buffer.PitchInformation.RowPitch) + (dstRegion.X * dataSize);
// Get the smallest line size.
int minLineSize = dstLineSize.Min(srcLineSize);
int minHeight = dstRegion.Height.Min(srcRegion.Height);
// Finally, copy our data.
for (int i = 0; i < minHeight; ++i)
{
DirectAccess.MemoryCopy(dstData, srcData, minLineSize);
srcData += PitchInformation.RowPitch;
dstData += buffer.PitchInformation.RowPitch;
}
}
