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[c-host] general windows fixes

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This commit is contained in:
Geoffrey McRae 2019-03-01 15:45:46 +11:00
parent 9170b24fee
commit fc178b40bc
5 changed files with 217 additions and 52 deletions
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113
c-host/app.c
View File

@ -51,19 +51,67 @@ static struct app app;
static int cursorThread(void * opaque)
{
DEBUG_INFO("Cursor thread started");
while(app.running)
usleep(10000);
DEBUG_INFO("Cursor thread stopped");
return 0;
}
static int frameThread(void * opaque)
{
DEBUG_INFO("Frame thread started");
while(app.running)
usleep(10000);
DEBUG_INFO("Frame thread stopped");
return 0;
}
int app_main()
bool startThreads()
{
app.running = true;
if (!os_createThread("CursorThread", cursorThread, NULL, &app.cursorThread))
{
DEBUG_ERROR("Failed to create the cursor thread");
return false;
}
if (!os_createThread("FrameThread", frameThread, NULL, &app.frameThread))
{
DEBUG_ERROR("Failed to create the frame thread");
return false;
}
return true;
}
bool stopThreads()
{
bool ok = true;
app.running = false;
if (app.frameThread && !os_joinThread(app.frameThread, NULL))
{
DEBUG_WARN("Failed to join the frame thread");
ok = false;
}
app.frameThread = NULL;
if (app.cursorThread && !os_joinThread(app.cursorThread, NULL))
{
DEBUG_WARN("Failed to join the cursor thread");
ok = false;
}
app.cursorThread = NULL;
return ok;
}
int app_main(bool * termSignal)
{
unsigned int shmemSize = os_shmemSize();
uint8_t * shmemMap = NULL;
@ -128,32 +176,57 @@ int app_main()
}
DEBUG_INFO("Capture Size : %u MiB (%u)", maxFrameSize / 1048576, maxFrameSize);
if (!os_createThread("CursorThread", cursorThread, NULL, &app.cursorThread))
DEBUG_INFO("==== [ Capture Start ] ====");
if (!startThreads())
{
DEBUG_ERROR("Failed to create the cursor thread");
exitcode = -1;
goto exit;
goto finish;
}
if (!os_createThread("FrameThread", frameThread, NULL, &app.frameThread))
while(!*termSignal)
{
DEBUG_ERROR("Failed to create the frame thread");
exitcode = -1;
goto exit_cursor_thread;
bool hasFrameUpdate = false;
bool hasPointerUpdate = false;
switch(iface->capture(&hasFrameUpdate, &hasPointerUpdate))
{
case CAPTURE_RESULT_OK:
break;
case CAPTURE_RESULT_TIMEOUT:
continue;
case CAPTURE_RESULT_REINIT:
DEBUG_INFO("==== [ Capture Reinit ] ====");
if (!stopThreads())
{
exitcode = -1;
goto finish;
}
if (true || !iface->deinit() || !iface->init())
{
DEBUG_ERROR("Failed to reinitialize the capture device");
exitcode = -1;
goto finish;
}
if (!startThreads())
{
exitcode = -1;
goto finish;
}
break;
case CAPTURE_RESULT_ERROR:
DEBUG_ERROR("Capture interface reported a fatal error");
exitcode = -1;
goto finish;
}
}
iface->capture();
iface->capture();
iface->capture();
//finish:
app.running = false;
if (!os_joinThread(app.frameThread, NULL))
DEBUG_WARN("Failed to join the cursor thread");
exit_cursor_thread:
app.running = false;
if (!os_joinThread(app.cursorThread, NULL))
DEBUG_WARN("Failed to join the cursor thread");
finish:
stopThreads();
exit:
iface->deinit();
iface->free();

2
c-host/app.h
View File

@ -21,7 +21,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include <stdbool.h>
int app_main();
int app_main(bool * termSignal);
// these must be implemented for each OS

5
c-host/capture/interface.h
View File

@ -39,5 +39,8 @@ struct CaptureInterface
bool (*deinit )();
void (*free )();
unsigned int (*getMaxFrameSize)();
CaptureResult (*capture )();
CaptureResult (*capture)(
bool * hasFrameUpdate,
bool * hasPointerUpdate);
};

25
c-host/windows/capture/dxgi.c
View File

@ -41,7 +41,6 @@ struct iface
IDXGIOutputDuplication * dup;
ID3D11Texture2D * texture;
bool hasFrame;
bool retryAcquire;
unsigned int width;
unsigned int height;
@ -93,7 +92,7 @@ static bool dxgi_init()
fn = (User32_SetProcessDpiAwarenessContext)GetProcAddress(user32, "SetProcessDpiAwarenessContext");
if (fn)
fn(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
CloseHandle(user32);
FreeLibrary(user32);
dpiDone = true;
}
@ -260,6 +259,10 @@ static bool dxgi_init()
if (SUCCEEDED(status))
break;
// if access is denied we just keep trying until it isn't
if (status == E_ACCESSDENIED)
--i;
Sleep(200);
}
@ -392,7 +395,7 @@ static unsigned int dxgi_getMaxFrameSize()
return this->height * this->pitch;
}
static CaptureResult dxgi_capture()
static CaptureResult dxgi_capture(bool * hasFrameUpdate, bool * hasPointerUpdate)
{
assert(this);
assert(this->initialized);
@ -418,14 +421,6 @@ static CaptureResult dxgi_capture()
case WAIT_ABANDONED:
case DXGI_ERROR_ACCESS_LOST:
if (this->retryAcquire)
{
DEBUG_WINERROR("Unable to acquire next frame, giving up", status);
this->retryAcquire = false;
return CAPTURE_RESULT_ERROR;
}
this->retryAcquire = true;
return CAPTURE_RESULT_REINIT;
default:
@ -444,6 +439,11 @@ static CaptureResult dxgi_capture()
ID3D11DeviceContext_CopyResource(this->deviceContext,
(ID3D11Resource *)this->texture, (ID3D11Resource *)src);
*hasFrameUpdate = true;
if (frameInfo.PointerShapeBufferSize > 0)
*hasPointerUpdate = true;
return CAPTURE_RESULT_OK;
}
@ -465,7 +465,10 @@ static CaptureResult dxgi_releaseFrame()
case WAIT_ABANDONED:
case DXGI_ERROR_ACCESS_LOST:
{
this->hasFrame = false;
return CAPTURE_RESULT_REINIT;
}
default:
DEBUG_WINERROR("ReleaseFrame failed", status);

124
c-host/windows/platform.c
View File

@ -28,6 +28,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
static HANDLE shmemHandle = INVALID_HANDLE_VALUE;
static bool shmemOwned = false;
static IVSHMEM_MMAP shmemMap = {0};
static bool termSignal = false;
static HWND messageWnd;
struct osThreadHandle
{
@ -39,12 +41,54 @@ struct osThreadHandle
int resultCode;
};
int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
LRESULT CALLBACK DummyWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
static int appThread(void * opaque)
{
int result = app_main(&termSignal);
SendMessage(messageWnd, WM_CLOSE, 0, 0);
return result;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
int result = 0;
HDEVINFO deviceInfoSet;
PSP_DEVICE_INTERFACE_DETAIL_DATA infData = NULL;
SP_DEVICE_INTERFACE_DATA deviceInterfaceData;
#if 0
// redirect stderr to a file
{
char tempPath[MAX_PATH+1];
GetTempPathA(sizeof(tempPath), tempPath);
int len = snprintf(NULL, 0, "%slooking-glass-host.txt", tempPath);
char * path = malloc(len + 1);
sprintf(path, "%slooking-glass-host.txt", tempPath);
freopen(path, "a", stderr);
free(path);
}
#endif
// always flush stderr
setbuf(stderr, NULL);
deviceInfoSet = SetupDiGetClassDevs(NULL, NULL, NULL, DIGCF_PRESENT | DIGCF_ALLCLASSES | DIGCF_DEVICEINTERFACE);
memset(&deviceInterfaceData, 0, sizeof(SP_DEVICE_INTERFACE_DATA));
deviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
@ -55,11 +99,13 @@ int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine
if (error == ERROR_NO_MORE_ITEMS)
{
DEBUG_WINERROR("Unable to enumerate the device, is it attached?", error);
return -1;
result = -1;
goto finish;
}
DEBUG_WINERROR("SetupDiEnumDeviceInterfaces failed", error);
return -1;
result = -1;
goto finish;
}
DWORD reqSize = 0;
@ -67,7 +113,8 @@ int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine
if (!reqSize)
{
DEBUG_WINERROR("SetupDiGetDeviceInterfaceDetail", GetLastError());
return -1;
result = -1;
goto finish;
}
infData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)calloc(reqSize, 1);
@ -76,7 +123,8 @@ int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine
{
free(infData);
DEBUG_WINERROR("SetupDiGetDeviceInterfaceDetail", GetLastError());
return -1;
result = -1;
goto finish;
}
shmemHandle = CreateFile(infData->DevicePath, 0, 0, NULL, OPEN_EXISTING, 0, 0);
@ -85,28 +133,66 @@ int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine
SetupDiDestroyDeviceInfoList(deviceInfoSet);
free(infData);
DEBUG_WINERROR("CreateFile returned INVALID_HANDLE_VALUE", GetLastError());
return -1;
result = -1;
goto finish;
}
free(infData);
SetupDiDestroyDeviceInfoList(deviceInfoSet);
int result = app_main();
os_shmemUnmap();
CloseHandle(shmemHandle);
if (result != 0)
// create a message window so that our message pump works
WNDCLASSEX wx = {};
wx.cbSize = sizeof(WNDCLASSEX);
wx.lpfnWndProc = DummyWndProc;
wx.hInstance = hInstance;
wx.lpszClassName = "DUMMY_CLASS";
if (!RegisterClassEx(&wx))
{
MessageBoxA(
NULL,
"The Looking Glass host has terminated due to an error.\r\n"
"\r\n"
"For more information run the application in a command prompt.",
"Looking Glass Host",
MB_ICONERROR);
DEBUG_ERROR("Failed to register message window class");
result = -1;
goto finish_shmem;
}
messageWnd = CreateWindowEx(0, "DUMMY_CLASS", "DUMMY_NAME", 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL);
osThreadHandle * thread;
if (!os_createThread("appThread", appThread, NULL, &thread))
{
DEBUG_ERROR("Failed to create the main application thread");
result = -1;
goto finish_shmem;
}
while(!termSignal)
{
MSG msg;
BOOL bRet = GetMessage(&msg, NULL, 0, 0);
if (bRet > 0)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else if (bRet < 0)
{
DEBUG_ERROR("Unknown error from GetMessage");
result = -1;
goto shutdown;
}
DEBUG_INFO("Platform shutdown");
break;
}
shutdown:
termSignal = true;
if (!os_joinThread(thread, &result))
{
DEBUG_ERROR("Failed to join the main application thread");
result = -1;
}
finish_shmem:
os_shmemUnmap();
CloseHandle(shmemHandle);
finish:
return result;
}