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ee9213da76
LookingGlass/host/Capture/DXGI.cpp
Geoffrey McRae 871aee2aae [host] fixed missed cursor shape updates
2018-05-28 10:34:24 +10:00

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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 "TraceUtil.h"
#include <mfapi.h>
#include <wmcodecdsp.h>
#include <codecapi.h>
#include <mferror.h>
#include <evr.h>
#include <mfapi.h>
#include <mfidl.h>
#include <mfreadwrite.h>
#if __MINGW32__
EXTERN_GUID(MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 0xa634a91c, 0x822b, 0x41b9, 0xa4, 0x94, 0x4d, 0xe4, 0x64, 0x36, 0x12, 0xb0);
EXTERN_GUID(MF_SOURCE_READER_ENABLE_ADVANCED_VIDEO_PROCESSING, 0xf81da2c, 0xb537, 0x4672, 0xa8, 0xb2, 0xa6, 0x81, 0xb1, 0x73, 0x7, 0xa3);
EXTERN_GUID(MF_SA_D3D11_AWARE, 0x206b4fc8, 0xfcf9, 0x4c51, 0xaf, 0xe3, 0x97, 0x64, 0x36, 0x9e, 0x33, 0xa0);
#define METransformUnknown 600
#define METransformNeedInput 601
#define METransformHaveOutput 602
#define METransformDrainComplete 603
#define METransformMarker 604
#endif
template <class T> void SafeRelease(T **ppT)
{
if (*ppT)
{
(*ppT)->Release();
*ppT = NULL;
}
}
DXGI::DXGI() :
m_cRef(1),
m_options(NULL),
m_initialized(false),
m_dxgiFactory(),
m_device(),
m_deviceContext(),
m_dup(),
m_texture(),
m_pointer(NULL)
{
MFStartup(MF_VERSION);
}
DXGI::~DXGI()
{
}
bool DXGI::Initialize(CaptureOptions * options)
{
if (m_initialized)
DeInitialize();
m_options = options;
HRESULT status;
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)
{
SafeRelease(&output);
continue;
}
m_output = output;
if (!m_output)
{
SafeRelease(&output);
SafeRelease(&adapter);
DEBUG_ERROR("Failed to get IDXGIOutput1");
DeInitialize();
return false;
}
m_width = outputDesc.DesktopCoordinates.right - outputDesc.DesktopCoordinates.left;
m_height = outputDesc.DesktopCoordinates.bottom - outputDesc.DesktopCoordinates.top;
SafeRelease(&output);
done = true;
break;
}
if (done)
break;
SafeRelease(&adapter);
}
if (!done)
{
DEBUG_ERROR("Failed to locate a valid output device");
DeInitialize();
return false;
}
static const D3D_FEATURE_LEVEL featureLevels[] = {
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
};
#if 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
);
SafeRelease(&adapter);
#undef CREATE_FLAGS
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create D3D11 device", status);
DeInitialize();
return false;
}
bool h264 = false;
for(CaptureOptions::const_iterator it = m_options->cbegin(); it != m_options->cend(); ++it)
{
if (_stricmp(*it, "h264") == 0) h264 = true;
}
if (h264)
{
DEBUG_WARN("Enabling experimental H.264 compression");
m_frameType = FRAME_TYPE_H264;
if (!InitH264Capture())
{
DeInitialize();
return false;
}
}
else
{
m_frameType = FRAME_TYPE_ARGB;
if (!InitRawCapture())
{
DeInitialize();
return false;
}
}
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 just incase we still get an error
// on re-initialization
for(int i = 0; i < 2; ++i)
{
status = m_output->DuplicateOutput(m_device, &m_dup);
if (SUCCEEDED(status))
break;
Sleep(200);
}
if (FAILED(status))
{
DEBUG_WINERROR("DuplicateOutput Failed", status);
DeInitialize();
return 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 = DXGI_FORMAT_B8G8R8A8_UNORM;
texDesc.BindFlags = 0;
texDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
texDesc.MiscFlags = 0;
HRESULT status = m_device->CreateTexture2D(&texDesc, NULL, &m_texture);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create texture", status);
return false;
}
return true;
}
bool DXGI::InitH264Capture()
{
HRESULT status;
MFT_REGISTER_TYPE_INFO typeInfo;
IMFActivate **activationPointers;
UINT32 activationPointerCount;
ID3D10MultithreadPtr mt(m_device);
mt->SetMultithreadProtected(TRUE);
SafeRelease(&mt);
m_encodeEvent = CreateEvent(NULL, TRUE , FALSE, NULL);
m_shutdownEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
InitializeCriticalSection(&m_encodeCS);
typeInfo.guidMajorType = MFMediaType_Video;
typeInfo.guidSubtype = MFVideoFormat_H264;
status = MFTEnumEx(
MFT_CATEGORY_VIDEO_ENCODER,
MFT_ENUM_FLAG_HARDWARE,
NULL,
&typeInfo,
&activationPointers,
&activationPointerCount
);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to enumerate encoder MFTs", status);
return false;
}
if (activationPointerCount == 0)
{
DEBUG_WINERROR("Hardware H264 MFT not available", status);
return false;
}
{
UINT32 nameLen = 0;
activationPointers[0]->GetStringLength(MFT_FRIENDLY_NAME_Attribute, &nameLen);
wchar_t * name = new wchar_t[nameLen+1];
activationPointers[0]->GetString(MFT_FRIENDLY_NAME_Attribute, name, nameLen + 1, NULL);
DEBUG_INFO("Using Encoder: %S", name);
delete[] name;
}
m_mfActivation = activationPointers[0];
CoTaskMemFree(activationPointers);
status = m_mfActivation->ActivateObject(IID_PPV_ARGS(&m_mfTransform));
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create H264 encoder MFT", status);
return false;
}
IMFAttributesPtr attribs;
m_mfTransform->GetAttributes(&attribs);
attribs->SetUINT32 (MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS , TRUE);
attribs->SetUINT32 (MF_SOURCE_READER_ENABLE_VIDEO_PROCESSING , TRUE);
attribs->SetUINT32 (MF_SOURCE_READER_ENABLE_ADVANCED_VIDEO_PROCESSING, TRUE);
attribs->SetUINT32 (MF_LOW_LATENCY , TRUE);
UINT32 d3d11Aware = 0;
UINT32 async = 0;
attribs->GetUINT32(MF_TRANSFORM_ASYNC, &async);
attribs->GetUINT32(MF_SA_D3D11_AWARE, &d3d11Aware);
if (async)
attribs->SetUINT32(MF_TRANSFORM_ASYNC_UNLOCK, TRUE);
SafeRelease(&attribs);
status = m_mfTransform.QueryInterface(IID_PPV_ARGS(&m_mediaEventGen));
if (FAILED(status))
{
DEBUG_WINERROR("Failed to obtain th emedia event generator interface", status);
return false;
}
status = m_mediaEventGen->BeginGetEvent(this, NULL);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to set the begin get event", status);
return false;
}
if (d3d11Aware)
{
MFCreateDXGIDeviceManager(&m_resetToken, &m_mfDeviceManager);
status = m_mfDeviceManager->ResetDevice(m_device, m_resetToken);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to call reset device", status);
return false;
}
status = m_mfTransform->ProcessMessage(MFT_MESSAGE_SET_D3D_MANAGER, ULONG_PTR(m_mfDeviceManager.GetInterfacePtr()));
if (FAILED(status))
{
DEBUG_WINERROR("Failed to set the D3D manager", status);
return false;
}
}
IMFMediaTypePtr outType;
MFCreateMediaType(&outType);
outType->SetGUID (MF_MT_MAJOR_TYPE , MFMediaType_Video);
outType->SetGUID (MF_MT_SUBTYPE , MFVideoFormat_H264);
outType->SetUINT32(MF_MT_AVG_BITRATE , 384*1000);
outType->SetUINT32(MF_MT_INTERLACE_MODE , MFVideoInterlace_Progressive);
outType->SetUINT32(MF_MT_MPEG2_PROFILE , eAVEncH264VProfile_High);
outType->SetUINT32(MF_MT_ALL_SAMPLES_INDEPENDENT, TRUE);
MFSetAttributeSize (outType, MF_MT_FRAME_SIZE , m_width, m_height);
MFSetAttributeRatio(outType, MF_MT_FRAME_RATE , 30, 1);
MFSetAttributeRatio(outType, MF_MT_PIXEL_ASPECT_RATIO, 1, 1);
status = m_mfTransform->SetOutputType(0, outType, 0);
SafeRelease(&outType);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to set the output media type on the H264 encoder MFT", status);
return false;
}
IMFMediaTypePtr inType;
MFCreateMediaType(&inType);
inType->SetGUID (MF_MT_MAJOR_TYPE , MFMediaType_Video );
inType->SetGUID (MF_MT_SUBTYPE , MFVideoFormat_NV12);
inType->SetUINT32(MF_MT_INTERLACE_MODE , MFVideoInterlace_Progressive);
inType->SetUINT32(MF_MT_ALL_SAMPLES_INDEPENDENT, TRUE);
MFSetAttributeSize (inType, MF_MT_FRAME_SIZE , m_width, m_height);
MFSetAttributeRatio(inType, MF_MT_FRAME_RATE , 30, 1);
MFSetAttributeRatio(inType, MF_MT_PIXEL_ASPECT_RATIO, 1 , 1);
status = m_mfTransform->SetInputType(0, inType, 0);
SafeRelease(&inType);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to set the input media type on the H264 encoder MFT", status);
return false;
}
m_mfTransform->ProcessMessage(MFT_MESSAGE_COMMAND_FLUSH , 0);
m_mfTransform->ProcessMessage(MFT_MESSAGE_NOTIFY_BEGIN_STREAMING, 0);
m_mfTransform->ProcessMessage(MFT_MESSAGE_NOTIFY_START_OF_STREAM, 0);
#if 0
status = MFTRegisterLocalByCLSID(
__uuidof(CColorConvertDMO),
MFT_CATEGORY_VIDEO_PROCESSOR,
L"",
MFT_ENUM_FLAG_SYNCMFT,
0,
NULL,
0,
NULL
);
if (FAILED(status))
{
DEBUG_ERROR("Failed to register color converter DSP");
return false;
}
#endif
return true;
}
void DXGI::DeInitialize()
{
if (m_mediaEventGen)
{
m_mfTransform->ProcessMessage(MFT_MESSAGE_NOTIFY_END_OF_STREAM, 0);
m_mfTransform->ProcessMessage(MFT_MESSAGE_COMMAND_DRAIN, 0);
while (WaitForSingleObject(m_shutdownEvent, INFINITE) != WAIT_OBJECT_0) {}
m_mfTransform->DeleteInputStream(0);
}
if (m_releaseFrame)
{
m_releaseFrame = false;
m_dup->ReleaseFrame();
}
if (m_pointer)
{
delete[] m_pointer;
m_pointer = NULL;
m_pointerBufSize = 0;
}
if (m_surfaceMapped)
{
m_deviceContext->Unmap(m_texture, 0);
m_surfaceMapped = false;
}
SafeRelease(&m_mediaEventGen);
SafeRelease(&m_mfTransform);
SafeRelease(&m_mfDeviceManager);
SafeRelease(&m_texture);
SafeRelease(&m_dup);
SafeRelease(&m_output);
SafeRelease(&m_deviceContext);
SafeRelease(&m_device);
SafeRelease(&m_dxgiFactory);
if (m_encodeEvent)
{
CloseHandle(m_encodeEvent );
CloseHandle(m_shutdownEvent);
m_encodeEvent = NULL;
m_shutdownEvent = NULL;
DeleteCriticalSection(&m_encodeCS);
}
if (m_mfActivation)
{
m_mfActivation->ShutdownObject();
SafeRelease(&m_mfActivation);
}
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);
}
STDMETHODIMP Capture::DXGI::Invoke(IMFAsyncResult * pAsyncResult)
{
HRESULT status, evtStatus;
MediaEventType meType = MEUnknown;
IMFMediaEvent *pEvent = NULL;
status = m_mediaEventGen->EndGetEvent(pAsyncResult, &pEvent);
if (FAILED(status))
{
DEBUG_WINERROR("EndGetEvent", status);
return status;
}
status = pEvent->GetStatus(&evtStatus);
if (FAILED(status))
{
SafeRelease(&pEvent);
DEBUG_WINERROR("GetStatus", status);
return status;
}
if (FAILED(evtStatus))
{
SafeRelease(&pEvent);
DEBUG_WINERROR("evtStatus", evtStatus);
return evtStatus;
}
status = pEvent->GetType(&meType);
if (FAILED(status))
{
SafeRelease(&pEvent);
DEBUG_WINERROR("GetType", status);
return status;
}
SafeRelease(&pEvent);
switch (meType)
{
case METransformNeedInput:
EnterCriticalSection(&m_encodeCS);
m_encodeNeedsData = true;
SetEvent(m_encodeEvent);
LeaveCriticalSection(&m_encodeCS);
break;
case METransformHaveOutput:
EnterCriticalSection(&m_encodeCS);
m_encodeHasData = true;
SetEvent(m_encodeEvent);
LeaveCriticalSection(&m_encodeCS);
break;
case METransformDrainComplete:
{
status = m_mfTransform->ProcessMessage(MFT_MESSAGE_COMMAND_FLUSH, 0);
if (FAILED(status))
{
DEBUG_WINERROR("MFT_MESSAGE_COMMAND_FLUSH", status);
return status;
}
SetEvent(m_shutdownEvent);
return S_OK;
}
case MEError:
DEBUG_INFO("err");
break;
default:
DEBUG_INFO("unk");
break;
}
status = m_mediaEventGen->BeginGetEvent(this, NULL);
if (FAILED(status))
{
DEBUG_WINERROR("BeginGetEvent", status);
return status;
}
return status;
}
void DXGI::WaitForDesktop()
{
HDESK desktop;
do
{
desktop = OpenInputDesktop(0, TRUE, GENERIC_READ);
if (desktop)
break;
Sleep(100);
}
while (!desktop);
CloseDesktop(desktop);
}
GrabStatus Capture::DXGI::GrabFrameTexture(struct FrameInfo & frame, struct CursorInfo & cursor, ID3D11Texture2DPtr & texture, bool & timeout)
{
if (!m_initialized)
return GRAB_STATUS_ERROR;
timeout = false;
DXGI_OUTDUPL_FRAME_INFO frameInfo;
IDXGIResourcePtr res;
HRESULT status;
for (int i = 0; i < 2; ++i)
{
while (true)
{
if (m_releaseFrame)
{
m_releaseFrame = false;
status = m_dup->ReleaseFrame();
switch (status)
{
case S_OK:
break;
case DXGI_ERROR_INVALID_CALL:
DEBUG_ERROR("Frame was already released");
return GRAB_STATUS_ERROR;
case DXGI_ERROR_ACCESS_LOST:
WaitForDesktop();
return GRAB_STATUS_REINIT;
}
}
status = m_dup->AcquireNextFrame(1000, &frameInfo, &res);
if (status == DXGI_ERROR_WAIT_TIMEOUT)
{
timeout = true;
return GRAB_STATUS_OK;
}
if (!SUCCEEDED(status))
break;
m_releaseFrame = true;
// if we have a mouse update
if (frameInfo.LastMouseUpdateTime.QuadPart)
{
if (
m_lastMousePos.x != frameInfo.PointerPosition.Position.x ||
m_lastMousePos.y != frameInfo.PointerPosition.Position.y
) {
cursor.updated = true;
cursor.hasPos = true;
cursor.x = frameInfo.PointerPosition.Position.x;
cursor.y = frameInfo.PointerPosition.Position.y;
m_lastMousePos.x = frameInfo.PointerPosition.Position.x;
m_lastMousePos.y = frameInfo.PointerPosition.Position.y;
}
if (m_lastMouseVis != frameInfo.PointerPosition.Visible)
{
cursor.updated = true;
m_lastMouseVis = frameInfo.PointerPosition.Visible;
}
cursor.visible = m_lastMouseVis == TRUE;
}
// if the pointer shape has changed
if (frameInfo.PointerShapeBufferSize > 0)
{
cursor.updated = true;
if (m_pointerBufSize < frameInfo.PointerShapeBufferSize)
{
if (m_pointer)
delete[] m_pointer;
m_pointer = new BYTE[frameInfo.PointerShapeBufferSize];
m_pointerBufSize = frameInfo.PointerShapeBufferSize;
}
DXGI_OUTDUPL_POINTER_SHAPE_INFO shapeInfo;
status = m_dup->GetFramePointerShape(m_pointerBufSize, m_pointer, &m_pointerSize, &shapeInfo);
if (!SUCCEEDED(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.shape = m_pointer;
cursor.w = shapeInfo.Width;
cursor.h = shapeInfo.Height;
cursor.pitch = shapeInfo.Pitch;
cursor.dataSize = m_pointerSize;
}
// if we also have frame data
if (frameInfo.LastPresentTime.QuadPart != 0)
break;
SafeRelease(&res);
if (cursor.updated)
return GRAB_STATUS_CURSOR;
}
if (SUCCEEDED(status))
break;
switch (status)
{
// desktop switch, mode change, switch DWM on or off or Secure Desktop
case DXGI_ERROR_ACCESS_LOST:
case WAIT_ABANDONED:
WaitForDesktop();
return GRAB_STATUS_REINIT;
default:
// unknown failure
DEBUG_WINERROR("AcquireNextFrame failed", status);
return GRAB_STATUS_ERROR;
}
}
// retry count exceeded
if (FAILED(status))
{
DEBUG_WINERROR("Failed to acquire next frame", status);
return GRAB_STATUS_ERROR;
}
res.QueryInterface(IID_PPV_ARGS(&texture));
SafeRelease(&res);
if (!texture)
{
DEBUG_ERROR("Failed to get src ID3D11Texture2D");
return GRAB_STATUS_ERROR;
}
return GRAB_STATUS_OK;
}
GrabStatus Capture::DXGI::GrabFrameRaw(FrameInfo & frame, struct CursorInfo & cursor)
{
GrabStatus result;
ID3D11Texture2DPtr src;
bool timeout;
while(true)
{
TRACE_START("GrabFrame");
result = GrabFrameTexture(frame, cursor, src, timeout);
TRACE_END;
if (result != GRAB_STATUS_OK)
return result;
if (timeout)
{
if (!m_surfaceMapped)
continue;
m_memcpy.Wake();
// send the last frame again if we timeout to prevent the client stalling on restart
frame.pitch = m_mapping.RowPitch;
frame.stride = m_mapping.RowPitch >> 2;
unsigned int size = m_height * m_mapping.RowPitch;
m_memcpy.Copy(frame.buffer, m_mapping.pData, LG_MIN(size, frame.bufferSize));
return GRAB_STATUS_OK;
}
break;
}
m_deviceContext->CopyResource(m_texture, src);
SafeRelease(&src);
if (m_surfaceMapped)
{
m_deviceContext->Unmap(m_texture, 0);
m_surfaceMapped = false;
}
HRESULT status;
status = m_deviceContext->Map(m_texture, 0, D3D11_MAP_READ, 0, &m_mapping);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to map the texture", status);
DeInitialize();
return GRAB_STATUS_ERROR;
}
m_surfaceMapped = true;
TRACE_START("DXGI Memory Copy");
// wake up the copy threads
m_memcpy.Wake();
frame.pitch = m_mapping.RowPitch;
frame.stride = m_mapping.RowPitch >> 2;
const unsigned int size = m_height * m_mapping.RowPitch;
m_memcpy.Copy(frame.buffer, m_mapping.pData, LG_MIN(size, frame.bufferSize));
TRACE_END;
return GRAB_STATUS_OK;
}
GrabStatus Capture::DXGI::GrabFrameH264(struct FrameInfo & frame, struct CursorInfo & cursor)
{
while(true)
{
// only reset the event if there isn't work pending
EnterCriticalSection(&m_encodeCS);
if (!m_encodeHasData && !m_encodeNeedsData)
ResetEvent(m_encodeEvent);
LeaveCriticalSection(&m_encodeCS);
switch (WaitForSingleObject(m_encodeEvent, 1000))
{
case WAIT_FAILED:
DEBUG_WINERROR("Wait for encode event failed", GetLastError());
return GRAB_STATUS_ERROR;
case WAIT_ABANDONED:
DEBUG_ERROR("Wait abandoned");
return GRAB_STATUS_ERROR;
case WAIT_TIMEOUT:
continue;
case WAIT_OBJECT_0:
break;
}
EnterCriticalSection(&m_encodeCS);
HRESULT status;
if (m_encodeNeedsData)
{
LeaveCriticalSection(&m_encodeCS);
GrabStatus result;
ID3D11Texture2DPtr src;
bool timeout;
while(true)
{
result = GrabFrameTexture(frame, cursor, src, timeout);
if (result != GRAB_STATUS_OK)
{
return result;
}
//FIXME: we should send the last frame again
if (!timeout)
break;
}
// cursor data may be returned, only turn off the flag if we have a frame
EnterCriticalSection(&m_encodeCS);
m_encodeNeedsData = false;
LeaveCriticalSection(&m_encodeCS);
IMFMediaBufferPtr buffer;
status = MFCreateDXGISurfaceBuffer(__uuidof(ID3D11Texture2D), src, 0, FALSE, &buffer);
SafeRelease(&src);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create DXGI surface buffer from texture", status);
return GRAB_STATUS_ERROR;
}
IMF2DBufferPtr imfBuffer(buffer);
DWORD length;
imfBuffer->GetContiguousLength(&length);
buffer->SetCurrentLength(length);
SafeRelease(&imfBuffer);
IMFSamplePtr sample;
MFCreateSample(&sample);
sample->AddBuffer(buffer);
status = m_mfTransform->ProcessInput(0, sample, 0);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to process the input", status);
return GRAB_STATUS_ERROR;
}
SafeRelease(&src );
SafeRelease(&sample);
SafeRelease(&buffer);
EnterCriticalSection(&m_encodeCS);
}
if (m_encodeHasData)
{
m_encodeHasData = false;
LeaveCriticalSection(&m_encodeCS);
// wake up the copy threads
TRACE_START("copy");
m_memcpy.Wake();
MFT_OUTPUT_STREAM_INFO streamInfo;
status = m_mfTransform->GetOutputStreamInfo(0, &streamInfo);
if (FAILED(status))
{
DEBUG_WINERROR("GetOutputStreamInfo", status);
return GRAB_STATUS_ERROR;
}
DWORD outStatus;
MFT_OUTPUT_DATA_BUFFER outDataBuffer;
outDataBuffer.dwStreamID = 0;
outDataBuffer.dwStatus = 0;
outDataBuffer.pEvents = NULL;
outDataBuffer.pSample = NULL;
status = m_mfTransform->ProcessOutput(0, 1, &outDataBuffer, &outStatus);
if (FAILED(status))
{
DEBUG_WINERROR("ProcessOutput", status);
return GRAB_STATUS_ERROR;
}
IMFMediaBufferPtr buffer;
MFCreateAlignedMemoryBuffer((DWORD)frame.bufferSize, MF_128_BYTE_ALIGNMENT, &buffer);
outDataBuffer.pSample->CopyToBuffer(buffer);
SafeRelease(&outDataBuffer.pEvents);
SafeRelease(&outDataBuffer.pSample);
BYTE *pixels;
DWORD maxLen, curLen;
buffer->Lock(&pixels, &maxLen, &curLen);
m_memcpy.Copy(frame.buffer, pixels, curLen);
buffer->Unlock();
SafeRelease(&buffer);
frame.stride = 0;
frame.pitch = curLen;
TRACE_END;
return GRAB_STATUS_OK;
}
LeaveCriticalSection(&m_encodeCS);
}
}
GrabStatus DXGI::GrabFrame(struct FrameInfo & frame, struct CursorInfo & cursor)
{
frame.width = m_width;
frame.height = m_height;
if (m_frameType == FRAME_TYPE_H264)
return GrabFrameH264(frame, cursor);
else
return GrabFrameRaw(frame, cursor);
}
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