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[host] fixed support for high DPI desktops (4K+)

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This commit is contained in:
Geoffrey McRae
2017-12-08 06:24:17 +11:00
parent 65ba649b36
commit a61293b551
8 changed files with 133 additions and 70 deletions
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82
host/Service.cpp
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@@ -28,6 +28,7 @@ Service * Service::m_instance = NULL;
Service::Service() :
m_initialized(false),
m_memory(NULL),
m_readyEvent(INVALID_HANDLE_VALUE),
m_capture(NULL),
m_header(NULL),
@@ -60,14 +61,17 @@ bool Service::Initialize(ICapture * captureDevice)
return false;
}
uint8_t * memory = static_cast<uint8_t*>(m_ivshmem->GetMemory());
if (!memory)
m_memory = static_cast<uint8_t*>(m_ivshmem->GetMemory());
if (!m_memory)
{
DEBUG_ERROR("Failed to get IVSHMEM memory");
DeInitialize();
return false;
}
if (!InitPointers())
return false;
m_readyEvent = m_ivshmem->CreateVectorEvent(0);
if (m_readyEvent == INVALID_HANDLE_VALUE)
{
@@ -76,20 +80,6 @@ bool Service::Initialize(ICapture * captureDevice)
return false;
}
m_header = reinterpret_cast<KVMFRHeader *>(memory);
m_frame[0] = (uint8_t *)(((uintptr_t)memory + sizeof(KVMFRHeader *) + 0x7F) & ~0x7F);
m_frameSize = ((m_ivshmem->GetSize() - (m_frame[0] - memory)) & ~0x7F) >> 1;
m_frame[1] = m_frame[0] + m_frameSize;
m_dataOffset[0] = m_frame[0] - memory;
m_dataOffset[1] = m_frame[1] - memory;
if (m_capture->GetMaxFrameSize() > m_frameSize)
{
DEBUG_ERROR("Frame can exceed buffer size!");
DeInitialize();
return false;
}
// we save this as it might actually be valid
UINT16 hostID = m_header->hostID;
@@ -105,10 +95,32 @@ bool Service::Initialize(ICapture * captureDevice)
return true;
}
bool Service::InitPointers()
{
m_header = reinterpret_cast<KVMFRHeader *>(m_memory);
m_frame[0] = (uint8_t *)(((uintptr_t)m_memory + sizeof(KVMFRHeader *) + 0x7F) & ~0x7F);
m_frameSize = ((m_ivshmem->GetSize() - (m_frame[0] - m_memory)) & ~0x7F) >> 1;
m_frame[1] = m_frame[0] + m_frameSize;
m_dataOffset[0] = m_frame[0] - m_memory;
m_dataOffset[1] = m_frame[1] - m_memory;
if (m_capture->GetMaxFrameSize() > m_frameSize)
{
DEBUG_ERROR("Frame can exceed buffer size!");
DeInitialize();
return false;
}
return true;
}
void Service::DeInitialize()
{
if (m_readyEvent != INVALID_HANDLE_VALUE)
{
CloseHandle(m_readyEvent);
m_readyEvent = INVALID_HANDLE_VALUE;
}
m_header = NULL;
m_frame[0] = NULL;
@@ -124,6 +136,7 @@ void Service::DeInitialize()
m_capture = NULL;
}
m_memory = NULL;
m_initialized = false;
}
@@ -165,11 +178,38 @@ bool Service::Process()
}
ResetEvent(m_readyEvent);
// capture a frame of data
if (!m_capture->GrabFrame(frame))
bool ok = false;
for(int i = 0; i < 2; ++i)
{
m_header->dataLen = 0;
DEBUG_ERROR("Capture failed");
// capture a frame of data
switch (m_capture->GrabFrame(frame))
{
case GRAB_STATUS_OK:
ok = true;
break;
case GRAB_STATUS_ERROR:
m_header->dataLen = 0;
DEBUG_ERROR("Capture failed");
return false;
case GRAB_STATUS_REINIT:
DEBUG_INFO("ReInitialize Requested");
if (!m_capture->ReInitialize() || !InitPointers())
{
DEBUG_ERROR("ReInitialize Failed");
return false;
}
continue;
}
if (ok)
break;
}
if (!ok)
{
DEBUG_ERROR("Capture retry count exceeded");
return false;
}
@@ -190,7 +230,7 @@ bool Service::Process()
else
{
POINT cursorPos;
GetCursorPos(&cursorPos);
GetPhysicalCursorPos(&cursorPos);
m_header->mouseX = cursorPos.x;
m_header->mouseY = cursorPos.y;
}