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1ef61f6cd3
LookingGlass/host/Capture/DXGI.cpp
Geoffrey McRae 1ef61f6cd3 [host] use a global hook to obtain cursor move pos
2019-01-11 23:58:50 +11:00

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/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "Capture/DXGI.h"
using namespace Capture;
#include "common/debug.h"
#include "common/memcpySSE.h"
static const char * DXGI_FORMAT_STR[] = {
"DXGI_FORMAT_UNKNOWN",
"DXGI_FORMAT_R32G32B32A32_TYPELESS",
"DXGI_FORMAT_R32G32B32A32_FLOAT",
"DXGI_FORMAT_R32G32B32A32_UINT",
"DXGI_FORMAT_R32G32B32A32_SINT",
"DXGI_FORMAT_R32G32B32_TYPELESS",
"DXGI_FORMAT_R32G32B32_FLOAT",
"DXGI_FORMAT_R32G32B32_UINT",
"DXGI_FORMAT_R32G32B32_SINT",
"DXGI_FORMAT_R16G16B16A16_TYPELESS",
"DXGI_FORMAT_R16G16B16A16_FLOAT",
"DXGI_FORMAT_R16G16B16A16_UNORM",
"DXGI_FORMAT_R16G16B16A16_UINT",
"DXGI_FORMAT_R16G16B16A16_SNORM",
"DXGI_FORMAT_R16G16B16A16_SINT",
"DXGI_FORMAT_R32G32_TYPELESS",
"DXGI_FORMAT_R32G32_FLOAT",
"DXGI_FORMAT_R32G32_UINT",
"DXGI_FORMAT_R32G32_SINT",
"DXGI_FORMAT_R32G8X24_TYPELESS",
"DXGI_FORMAT_D32_FLOAT_S8X24_UINT",
"DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS",
"DXGI_FORMAT_X32_TYPELESS_G8X24_UINT",
"DXGI_FORMAT_R10G10B10A2_TYPELESS",
"DXGI_FORMAT_R10G10B10A2_UNORM",
"DXGI_FORMAT_R10G10B10A2_UINT",
"DXGI_FORMAT_R11G11B10_FLOAT",
"DXGI_FORMAT_R8G8B8A8_TYPELESS",
"DXGI_FORMAT_R8G8B8A8_UNORM",
"DXGI_FORMAT_R8G8B8A8_UNORM_SRGB",
"DXGI_FORMAT_R8G8B8A8_UINT",
"DXGI_FORMAT_R8G8B8A8_SNORM",
"DXGI_FORMAT_R8G8B8A8_SINT",
"DXGI_FORMAT_R16G16_TYPELESS",
"DXGI_FORMAT_R16G16_FLOAT",
"DXGI_FORMAT_R16G16_UNORM",
"DXGI_FORMAT_R16G16_UINT",
"DXGI_FORMAT_R16G16_SNORM",
"DXGI_FORMAT_R16G16_SINT",
"DXGI_FORMAT_R32_TYPELESS",
"DXGI_FORMAT_D32_FLOAT",
"DXGI_FORMAT_R32_FLOAT",
"DXGI_FORMAT_R32_UINT",
"DXGI_FORMAT_R32_SINT",
"DXGI_FORMAT_R24G8_TYPELESS",
"DXGI_FORMAT_D24_UNORM_S8_UINT",
"DXGI_FORMAT_R24_UNORM_X8_TYPELESS",
"DXGI_FORMAT_X24_TYPELESS_G8_UINT",
"DXGI_FORMAT_R8G8_TYPELESS",
"DXGI_FORMAT_R8G8_UNORM",
"DXGI_FORMAT_R8G8_UINT",
"DXGI_FORMAT_R8G8_SNORM",
"DXGI_FORMAT_R8G8_SINT",
"DXGI_FORMAT_R16_TYPELESS",
"DXGI_FORMAT_R16_FLOAT",
"DXGI_FORMAT_D16_UNORM",
"DXGI_FORMAT_R16_UNORM",
"DXGI_FORMAT_R16_UINT",
"DXGI_FORMAT_R16_SNORM",
"DXGI_FORMAT_R16_SINT",
"DXGI_FORMAT_R8_TYPELESS",
"DXGI_FORMAT_R8_UNORM",
"DXGI_FORMAT_R8_UINT",
"DXGI_FORMAT_R8_SNORM",
"DXGI_FORMAT_R8_SINT",
"DXGI_FORMAT_A8_UNORM",
"DXGI_FORMAT_R1_UNORM",
"DXGI_FORMAT_R9G9B9E5_SHAREDEXP",
"DXGI_FORMAT_R8G8_B8G8_UNORM",
"DXGI_FORMAT_G8R8_G8B8_UNORM",
"DXGI_FORMAT_BC1_TYPELESS",
"DXGI_FORMAT_BC1_UNORM",
"DXGI_FORMAT_BC1_UNORM_SRGB",
"DXGI_FORMAT_BC2_TYPELESS",
"DXGI_FORMAT_BC2_UNORM",
"DXGI_FORMAT_BC2_UNORM_SRGB",
"DXGI_FORMAT_BC3_TYPELESS",
"DXGI_FORMAT_BC3_UNORM",
"DXGI_FORMAT_BC3_UNORM_SRGB",
"DXGI_FORMAT_BC4_TYPELESS",
"DXGI_FORMAT_BC4_UNORM",
"DXGI_FORMAT_BC4_SNORM",
"DXGI_FORMAT_BC5_TYPELESS",
"DXGI_FORMAT_BC5_UNORM",
"DXGI_FORMAT_BC5_SNORM",
"DXGI_FORMAT_B5G6R5_UNORM",
"DXGI_FORMAT_B5G5R5A1_UNORM",
"DXGI_FORMAT_B8G8R8A8_UNORM",
"DXGI_FORMAT_B8G8R8X8_UNORM",
"DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM",
"DXGI_FORMAT_B8G8R8A8_TYPELESS",
"DXGI_FORMAT_B8G8R8A8_UNORM_SRGB",
"DXGI_FORMAT_B8G8R8X8_TYPELESS",
"DXGI_FORMAT_B8G8R8X8_UNORM_SRGB",
"DXGI_FORMAT_BC6H_TYPELESS",
"DXGI_FORMAT_BC6H_UF16",
"DXGI_FORMAT_BC6H_SF16",
"DXGI_FORMAT_BC7_TYPELESS",
"DXGI_FORMAT_BC7_UNORM",
"DXGI_FORMAT_BC7_UNORM_SRGB",
"DXGI_FORMAT_AYUV",
"DXGI_FORMAT_Y410",
"DXGI_FORMAT_Y416",
"DXGI_FORMAT_NV12",
"DXGI_FORMAT_P010",
"DXGI_FORMAT_P016",
"DXGI_FORMAT_420_OPAQUE",
"DXGI_FORMAT_YUY2",
"DXGI_FORMAT_Y210",
"DXGI_FORMAT_Y216",
"DXGI_FORMAT_NV11",
"DXGI_FORMAT_AI44",
"DXGI_FORMAT_IA44",
"DXGI_FORMAT_P8",
"DXGI_FORMAT_A8P8",
"DXGI_FORMAT_B4G4R4A4_UNORM",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"DXGI_FORMAT_P208",
"DXGI_FORMAT_V208",
"DXGI_FORMAT_V408"
};
const char * GetDXGIFormatStr(DXGI_FORMAT format)
{
if (format > _countof(DXGI_FORMAT_STR))
return DXGI_FORMAT_STR[0];
return DXGI_FORMAT_STR[format];
}
DXGI::DXGI() :
m_options(NULL),
m_initialized(false),
m_dxgiFactory(),
m_device(),
m_deviceContext(),
m_dup()
{
}
DXGI::~DXGI()
{
}
bool DXGI::CanInitialize()
{
HDESK desktop = OpenInputDesktop(0, TRUE, GENERIC_READ);
if (!desktop)
return false;
CloseDesktop(desktop);
return true;
}
bool DXGI::Initialize(CaptureOptions * options)
{
if (m_initialized)
DeInitialize();
m_options = options;
HRESULT status;
m_cursorRPos = 0;
m_cursorWPos = 0;
for (int i = 0; i < _countof(m_cursorRing); ++i)
{
CursorInfo & cursor = m_cursorRing[i];
cursor.visible = false;
cursor.hasPos = false;
cursor.hasShape = false;
}
status = CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void **)(&m_dxgiFactory));
if (FAILED(status))
{
DEBUG_ERROR("Failed to create DXGIFactory: %08x", (int)status);
return false;
}
bool done = false;
IDXGIAdapter1Ptr adapter;
for (int i = 0; m_dxgiFactory->EnumAdapters1(i, &adapter) != DXGI_ERROR_NOT_FOUND; i++)
{
IDXGIOutputPtr output;
for (int i = 0; adapter->EnumOutputs(i, &output) != DXGI_ERROR_NOT_FOUND; i++)
{
DXGI_OUTPUT_DESC outputDesc;
output->GetDesc(&outputDesc);
if (!outputDesc.AttachedToDesktop)
{
output = NULL;
continue;
}
m_output = output;
if (!m_output)
{
DEBUG_ERROR("Failed to get IDXGIOutput1");
DeInitialize();
return false;
}
DXGI_ADAPTER_DESC1 adapterDesc;
adapter->GetDesc1(&adapterDesc);
DEBUG_INFO("Device Descripion: %ls" , adapterDesc.Description);
DEBUG_INFO("Device Vendor ID : 0x%x" , adapterDesc.VendorId);
DEBUG_INFO("Device Device ID : 0x%x" , adapterDesc.DeviceId);
DEBUG_INFO("Device Video Mem : %lld MB", adapterDesc.DedicatedVideoMemory / 1048576);
DEBUG_INFO("Device Sys Mem : %lld MB", adapterDesc.DedicatedSystemMemory / 1048576);
DEBUG_INFO("Shared Sys Mem : %lld MB", adapterDesc.SharedSystemMemory / 1048576);
m_width = outputDesc.DesktopCoordinates.right - outputDesc.DesktopCoordinates.left;
m_height = outputDesc.DesktopCoordinates.bottom - outputDesc.DesktopCoordinates.top;
DEBUG_INFO("Capture Size : %u x %u", m_width, m_height);
done = true;
break;
}
if (done)
break;
adapter = NULL;
}
if (!done)
{
DEBUG_ERROR("Failed to locate a valid output device");
DeInitialize();
return false;
}
static const D3D_FEATURE_LEVEL featureLevels[] = {
D3D_FEATURE_LEVEL_12_1,
D3D_FEATURE_LEVEL_12_0,
D3D_FEATURE_LEVEL_11_1,
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
D3D_FEATURE_LEVEL_9_3,
D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1
};
#ifdef _DEBUG
#define CREATE_FLAGS (D3D11_CREATE_DEVICE_DEBUG)
#else
#define CREATE_FLAGS (0)
#endif
status = D3D11CreateDevice(
adapter,
D3D_DRIVER_TYPE_UNKNOWN,
NULL,
CREATE_FLAGS | D3D11_CREATE_DEVICE_VIDEO_SUPPORT,
featureLevels, ARRAYSIZE(featureLevels),
D3D11_SDK_VERSION,
&m_device,
&m_featureLevel,
&m_deviceContext
);
#undef CREATE_FLAGS
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create D3D11 device", status);
DeInitialize();
return false;
}
DEBUG_INFO("Feature Level : 0x%x", m_featureLevel);
IDXGIDevicePtr dxgi;
status = m_device->QueryInterface(__uuidof(IDXGIDevice), (void **)&dxgi);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to obtain the IDXGIDevice interface from the D3D11 device", status);
DeInitialize();
return false;
}
dxgi->SetGPUThreadPriority(7);
// we try this twice in case we still get an error on re-initialization
for (int i = 0; i < 2; ++i)
{
const DXGI_FORMAT supportedFormats[] = {
DXGI_FORMAT_B8G8R8A8_UNORM,
DXGI_FORMAT_R8G8B8A8_UNORM,
DXGI_FORMAT_R10G10B10A2_UNORM
};
status = m_output->DuplicateOutput1(m_device, 0, _countof(supportedFormats), supportedFormats, &m_dup);
if (SUCCEEDED(status))
break;
Sleep(200);
}
if (FAILED(status))
{
DEBUG_WINERROR("DuplicateOutput1 Failed", status);
DeInitialize();
return false;
}
DXGI_OUTDUPL_DESC dupDesc;
m_dup->GetDesc(&dupDesc);
DEBUG_INFO("Source Format : %s", GetDXGIFormatStr(dupDesc.ModeDesc.Format));
m_started = false;
m_initialized = true;
return true;
}
bool DXGI::InitRawCapture()
{
D3D11_TEXTURE2D_DESC texDesc;
ZeroMemory(&texDesc, sizeof(texDesc));
texDesc.Width = m_width;
texDesc.Height = m_height;
texDesc.MipLevels = 1;
texDesc.ArraySize = 1;
texDesc.SampleDesc.Count = 1;
texDesc.SampleDesc.Quality = 0;
texDesc.Usage = D3D11_USAGE_STAGING;
texDesc.Format = m_pixelFormat;
texDesc.BindFlags = 0;
texDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
texDesc.MiscFlags = 0;
HRESULT status = m_device->CreateTexture2D(&texDesc, NULL, &m_texture[0]);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create texture", status);
return false;
}
return true;
}
bool DXGI::InitYUV420Capture()
{
HRESULT status;
D3D11_TEXTURE2D_DESC texDesc;
ZeroMemory(&texDesc, sizeof(texDesc));
texDesc.Width = m_width;
texDesc.Height = m_height;
texDesc.MipLevels = 1;
texDesc.ArraySize = 1;
texDesc.SampleDesc.Count = 1;
texDesc.SampleDesc.Quality = 0;
texDesc.Usage = D3D11_USAGE_STAGING;
texDesc.Format = DXGI_FORMAT_R8_UNORM;
texDesc.BindFlags = 0;
texDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
texDesc.MiscFlags = 0;
status = m_device->CreateTexture2D(&texDesc, NULL, &m_texture[0]);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create texture", status);
return false;
}
texDesc.Width /= 2;
texDesc.Height /= 2;
status = m_device->CreateTexture2D(&texDesc, NULL, &m_texture[1]);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create texture", status);
return false;
}
status = m_device->CreateTexture2D(&texDesc, NULL, &m_texture[2]);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create texture", status);
return false;
}
m_textureConverter = new TextureConverter();
if (!m_textureConverter->Initialize(m_deviceContext, m_device, m_width, m_height, FRAME_TYPE_YUV420))
return false;
return true;
}
void DXGI::DeInitialize()
{
if (m_h264)
{
delete m_h264;
m_h264 = NULL;
}
if (m_textureConverter)
{
delete m_textureConverter;
m_textureConverter = NULL;
}
ReleaseFrame();
for(int i = 0; i < _countof(m_cursorRing); ++i)
{
if (m_cursorRing[i].shape.buffer)
delete[] m_cursorRing[i].shape.buffer;
m_cursorRing[i].shape.buffer = NULL;
m_cursorRing[i].shape.bufferSize = 0;
}
for(int i = 0; i < _countof(m_texture); ++i)
m_texture[i] = NULL;
m_dup = NULL;
m_output = NULL;
m_deviceContext = NULL;
m_device = NULL;
m_dxgiFactory = NULL;
m_initialized = false;
}
FrameType DXGI::GetFrameType()
{
if (!m_initialized)
return FRAME_TYPE_INVALID;
return m_frameType;
}
size_t DXGI::GetMaxFrameSize()
{
if (!m_initialized)
return 0;
return (m_width * m_height * 4);
}
unsigned int Capture::DXGI::Capture()
{
if (!m_initialized)
return GRAB_STATUS_ERROR;
CursorInfo & cursor = m_cursorRing[m_cursorWPos];
DXGI_OUTDUPL_FRAME_INFO frameInfo;
IDXGIResourcePtr res;
unsigned int ret;
HRESULT status;
for (int retryCount = 0; retryCount < 2; ++retryCount)
{
ret = ReleaseFrame();
if (ret != GRAB_STATUS_OK)
return ret;
status = m_dup->AcquireNextFrame(1000, &frameInfo, &res);
switch (status)
{
case S_OK:
m_releaseFrame = true;
break;
case DXGI_ERROR_WAIT_TIMEOUT:
return GRAB_STATUS_TIMEOUT;
// desktop switch, mode change, switch DWM on or off or Secure Desktop
case DXGI_ERROR_ACCESS_LOST:
case WAIT_ABANDONED:
return GRAB_STATUS_REINIT;
default:
// unknown failure
DEBUG_WINERROR("AcquireNextFrame failed", status);
return GRAB_STATUS_ERROR;
}
// if the pointer shape has changed
if (frameInfo.PointerShapeBufferSize > 0)
{
// resize the buffer if required
if (cursor.shape.bufferSize < frameInfo.PointerShapeBufferSize)
{
delete[] cursor.shape.buffer;
cursor.shape.buffer = new char[frameInfo.PointerShapeBufferSize];
cursor.shape.bufferSize = frameInfo.PointerShapeBufferSize;
}
cursor.shape.pointerSize = 0;
ret |= GRAB_STATUS_CURSOR;
DXGI_OUTDUPL_POINTER_SHAPE_INFO shapeInfo;
status = m_dup->GetFramePointerShape(cursor.shape.bufferSize, cursor.shape.buffer, &cursor.shape.pointerSize, &shapeInfo);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to get the new pointer shape", status);
return GRAB_STATUS_ERROR;
}
switch (shapeInfo.Type)
{
case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR : cursor.type = CURSOR_TYPE_COLOR; break;
case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR: cursor.type = CURSOR_TYPE_MASKED_COLOR; break;
case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME : cursor.type = CURSOR_TYPE_MONOCHROME; break;
default:
DEBUG_ERROR("Invalid cursor type");
return GRAB_STATUS_ERROR;
}
cursor.hasShape = true;
cursor.w = shapeInfo.Width;
cursor.h = shapeInfo.Height;
cursor.pitch = shapeInfo.Pitch;
}
// if we have a mouse update
if (frameInfo.LastMouseUpdateTime.QuadPart)
{
if (
m_lastCursorX != frameInfo.PointerPosition.Position.x ||
m_lastCursorY != frameInfo.PointerPosition.Position.y
) {
ret |= GRAB_STATUS_CURSOR;
cursor.hasPos = true;
cursor.x = m_lastCursorX = frameInfo.PointerPosition.Position.x;
cursor.y = m_lastCursorY = frameInfo.PointerPosition.Position.y;
}
}
if (m_lastMouseVis != frameInfo.PointerPosition.Visible)
m_lastMouseVis = frameInfo.PointerPosition.Visible;
cursor.visible = m_lastMouseVis == TRUE;
if (ret & GRAB_STATUS_CURSOR && m_cursorWPos == m_cursorRPos)
{
// atomic advance so we don't have to worry about locking
m_cursorWPos = (m_cursorWPos + 1 == DXGI_CURSOR_RING_SIZE) ? 0 : m_cursorWPos + 1;
}
// if we don't have frame data
if (frameInfo.LastPresentTime.QuadPart == 0)
{
// if there is nothing to update, just start again
if (!ret)
{
--retryCount;
continue;
}
res = NULL;
ret |= GRAB_STATUS_OK;
return ret;
}
// success, break out of the retry loop
break;
}
ret |= GRAB_STATUS_FRAME;
// ensure we have a frame
if (!m_releaseFrame)
{
DEBUG_WINERROR("Failed to acquire next frame", status);
return GRAB_STATUS_ERROR;
}
// get the texture
res.QueryInterface(IID_PPV_ARGS(&m_ftexture));
res = NULL;
if (!m_ftexture)
{
DEBUG_ERROR("Failed to get src ID3D11Texture2D");
return GRAB_STATUS_ERROR;
}
if (!m_started)
{
m_started = true;
// determine the native pixel format
D3D11_TEXTURE2D_DESC dupDesc;
ZeroMemory(&dupDesc, sizeof(dupDesc));
m_ftexture->GetDesc(&dupDesc);
m_pixelFormat = dupDesc.Format;
switch(m_pixelFormat)
{
case DXGI_FORMAT_R8G8B8A8_UNORM:
m_frameType = FRAME_TYPE_RGBA;
break;
case DXGI_FORMAT_B8G8R8A8_UNORM:
m_frameType = FRAME_TYPE_BGRA;
break;
case DXGI_FORMAT_R10G10B10A2_UNORM:
m_frameType = FRAME_TYPE_RGBA10;
break;
default:
DEBUG_WARN("Unsupported pixel format %s, enabling conversions", GetDXGIFormatStr(m_pixelFormat));
return GRAB_STATUS_ERROR;
}
DEBUG_INFO("Pixel Format : %s", GetDXGIFormatStr(m_pixelFormat));
for(CaptureOptions::const_iterator it = m_options->cbegin(); it != m_options->cend(); ++it)
{
if (_stricmp(*it, "yuv420") == 0) m_frameType = FRAME_TYPE_YUV420;
}
bool ok = false;
switch (m_frameType)
{
case FRAME_TYPE_BGRA :
case FRAME_TYPE_RGBA :
case FRAME_TYPE_RGBA10: ok = InitRawCapture (); break;
case FRAME_TYPE_YUV420: ok = InitYUV420Capture(); break;
}
if (!ok)
return GRAB_STATUS_ERROR;
}
// initiate the texture copy as early as possible
if (m_frameType == FRAME_TYPE_YUV420)
{
TextureList planes;
if (!m_textureConverter->Convert(m_ftexture, planes))
return GRAB_STATUS_ERROR;
for (int i = 0; i < 3; ++i)
{
ID3D11Texture2DPtr t = planes.at(i);
m_deviceContext->CopyResource(m_texture[i], t);
}
}
else
m_deviceContext->CopyResource(m_texture[0], m_ftexture);
ret |= GRAB_STATUS_OK;
return ret;
}
GrabStatus Capture::DXGI::ReleaseFrame()
{
if (!m_releaseFrame)
return GRAB_STATUS_OK;
m_releaseFrame = false;
m_ftexture = NULL;
switch (m_dup->ReleaseFrame())
{
case S_OK:
break;
case DXGI_ERROR_INVALID_CALL:
DEBUG_ERROR("Frame was already released");
return GRAB_STATUS_ERROR;
case WAIT_ABANDONED:
case DXGI_ERROR_ACCESS_LOST:
return GRAB_STATUS_REINIT;
}
return GRAB_STATUS_OK;
}
GrabStatus Capture::DXGI::DiscardFrame()
{
return ReleaseFrame();
}
GrabStatus Capture::DXGI::GrabFrameRaw(FrameInfo & frame)
{
GrabStatus result;
D3D11_MAPPED_SUBRESOURCE mapping;
HRESULT status;
status = m_deviceContext->Map(m_texture[0], 0, D3D11_MAP_READ, 0, &mapping);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to map the texture", status);
DeInitialize();
return GRAB_STATUS_ERROR;
}
frame.pitch = mapping.RowPitch;
frame.stride = mapping.RowPitch / 4;
memcpySSE(frame.buffer, mapping.pData, frame.pitch * m_height);
m_deviceContext->Unmap(m_texture[0], 0);
return GRAB_STATUS_OK;
}
GrabStatus Capture::DXGI::GrabFrameYUV420(struct FrameInfo & frame)
{
GrabStatus result;
uint8_t * data = (uint8_t *)frame.buffer;
size_t remain = frame.bufferSize;
for(int i = 0; i < 3; ++i)
{
HRESULT status;
D3D11_MAPPED_SUBRESOURCE mapping;
D3D11_TEXTURE2D_DESC desc;
m_texture[i]->GetDesc(&desc);
status = m_deviceContext->Map(m_texture[i], 0, D3D11_MAP_READ, 0, &mapping);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to map the texture", status);
DeInitialize();
return GRAB_STATUS_ERROR;
}
const unsigned int size = desc.Height * desc.Width;
if (size > remain)
{
m_deviceContext->Unmap(m_texture[i], 0);
DEBUG_ERROR("Too much data to fit in buffer");
return GRAB_STATUS_ERROR;
}
const uint8_t * src = (uint8_t *)mapping.pData;
for(unsigned int y = 0; y < desc.Height; ++y)
{
memcpySSE(data, src, desc.Width);
data += desc.Width;
src += mapping.RowPitch;
}
m_deviceContext->Unmap(m_texture[i], 0);
remain -= size;
}
frame.pitch = m_width;
frame.stride = m_width;
return GRAB_STATUS_OK;
}
GrabStatus DXGI::GetFrame(struct FrameInfo & frame)
{
if (!m_ftexture)
{
DEBUG_ERROR("A frame has not been captured");
return GRAB_STATUS_ERROR;
}
frame.width = m_width;
frame.height = m_height;
if (m_frameType == FRAME_TYPE_YUV420)
return GrabFrameYUV420(frame);
return GrabFrameRaw(frame);
}
bool DXGI::GetCursor(CursorInfo & cursor)
{
if (m_cursorRPos == m_cursorWPos)
return false;
cursor = m_cursorRing[m_cursorRPos];
return true;
}
void DXGI::FreeCursor()
{
assert(m_cursorRPos != m_cursorWPos);
CursorInfo & cursor = m_cursorRing[m_cursorRPos];
cursor.visible = false;
cursor.hasPos = false;
cursor.hasShape = false;
m_cursorRPos = (m_cursorRPos + 1 == DXGI_CURSOR_RING_SIZE) ? 0 : m_cursorRPos + 1;
}
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