mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-22 05:27:20 +00:00
[c-host] more windows basics and ivshmem pointer init
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parent
6894ed7d5c
commit
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@ -13,7 +13,7 @@ OBJS = app.o
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# if windows
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ifdef OS
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CC = gcc.exe
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LDFLAGS = -L./windows/dll
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LDFLAGS = -L./windows/dll -mwindows
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LIBS += -lsetupapi
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OBJS += windows/platform.o
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OBJS += windows/windebug.o
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62
c-host/app.c
62
c-host/app.c
@ -20,20 +20,61 @@ Place, Suite 330, Boston, MA 02111-1307 USA
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#include "app.h"
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#include <stdio.h>
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#include <inttypes.h>
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#include "debug.h"
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#include "capture/interfaces.h"
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#include "KVMFR.h"
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#define ALIGN_DN(x) ((uintptr_t)(x) & ~0x7F)
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#define ALIGN_UP(x) ALIGN_DN(x + 0x7F)
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#define MAX_FRAMES 2
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struct app
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{
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KVMFRHeader * shmHeader;
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uint8_t * cursorData;
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unsigned int cursorDataSize;
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unsigned int cursorOffset;
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uint8_t * frames;
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unsigned int frameSize;
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uint8_t * frame[MAX_FRAMES];
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unsigned int frameOffset[MAX_FRAMES];
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};
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static struct app app;
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int app_main()
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{
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unsigned int shmemSize = os_shmemSize();
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void * shmemMap = NULL;
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uint8_t * shmemMap = NULL;
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int exitcode = 0;
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DEBUG_INFO("IVSHMEM Size : %u MiB", shmemSize / 1048576);
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if (!os_shmemMmap(&shmemMap) || !shmemMap)
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if (!os_shmemMmap((void **)&shmemMap) || !shmemMap)
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{
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DEBUG_ERROR("Failed to map the shared memory");
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return -1;
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}
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DEBUG_INFO("IVSHMEM Address : 0x%" PRIXPTR, (uintptr_t)shmemMap);
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app.shmHeader = (KVMFRHeader *)shmemMap;
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app.cursorData = (uint8_t *)ALIGN_UP(shmemMap + sizeof(KVMFRHeader));
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app.cursorDataSize = 1048576; // 1MB fixed for cursor size, should be more then enough
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app.cursorOffset = app.cursorData - shmemMap;
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app.frames = (uint8_t *)ALIGN_UP(app.cursorData + app.cursorDataSize);
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app.frameSize = ALIGN_DN((shmemSize - (app.frames - shmemMap)) / MAX_FRAMES);
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DEBUG_INFO("Max Cursor Size : %u MiB" , app.cursorDataSize / 1048576);
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DEBUG_INFO("Max Frame Size : %u MiB" , app.frameSize / 1048576);
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DEBUG_INFO("Cursor : 0x%" PRIXPTR " (0x%08x)", (uintptr_t)app.cursorData, app.cursorOffset);
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for (int i = 0; i < MAX_FRAMES; ++i)
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{
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app.frame [i] = app.frames + i * app.frameSize;
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app.frameOffset[i] = app.frame[i] - shmemMap;
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DEBUG_INFO("Frame %d : 0x%" PRIXPTR " (0x%08x)", i, (uintptr_t)app.frame[i], app.frameOffset[i]);
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}
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struct CaptureInterface * iface = NULL;
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for(int i = 0; CaptureInterfaces[i]; ++i)
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@ -53,18 +94,29 @@ int app_main()
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if (!iface)
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{
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DEBUG_ERROR("Failed to find a supported capture interface");
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return -1;
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exitcode = -1;
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goto fail;
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}
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DEBUG_INFO("Using : %s", iface->getName());
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const unsigned int maxFrameSize = iface->getMaxFrameSize();
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if (maxFrameSize > app.frameSize)
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{
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DEBUG_ERROR("Maximum frame size of %d bytes excceds maximum space available", maxFrameSize);
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exitcode = -1;
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goto exit;
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}
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DEBUG_INFO("Capture Size : %u MiB (%u)", maxFrameSize / 1048576, maxFrameSize);
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iface->capture();
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iface->capture();
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iface->capture();
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exit:
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iface->deinit();
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iface->free();
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fail:
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os_shmemUnmap();
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return 0;
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return exitcode;
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}
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@ -33,10 +33,11 @@ CaptureResult;
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struct CaptureInterface
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{
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const char * (*getName)();
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bool (*create )();
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bool (*init )();
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bool (*deinit )();
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void (*free )();
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CaptureResult (*capture)();
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const char * (*getName )();
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bool (*create )();
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bool (*init )();
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bool (*deinit )();
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void (*free )();
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unsigned int (*getMaxFrameSize)();
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CaptureResult (*capture )();
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};
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@ -45,6 +45,8 @@ struct iface
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unsigned int width;
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unsigned int height;
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unsigned int pitch;
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unsigned int stride;
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};
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static bool dpiDone = false;
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@ -184,9 +186,9 @@ static bool dxgi_init()
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DEBUG_INFO("Device Descripion: %ls" , adapterDesc.Description);
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DEBUG_INFO("Device Vendor ID : 0x%x" , adapterDesc.VendorId);
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DEBUG_INFO("Device Device ID : 0x%x" , adapterDesc.DeviceId);
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DEBUG_INFO("Device Video Mem : %u MB", (unsigned)(adapterDesc.DedicatedVideoMemory / 1048576));
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DEBUG_INFO("Device Sys Mem : %u MB", (unsigned)(adapterDesc.DedicatedSystemMemory / 1048576));
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DEBUG_INFO("Shared Sys Mem : %u MB", (unsigned)(adapterDesc.SharedSystemMemory / 1048576));
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DEBUG_INFO("Device Video Mem : %u MiB", (unsigned)(adapterDesc.DedicatedVideoMemory / 1048576));
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DEBUG_INFO("Device Sys Mem : %u MiB", (unsigned)(adapterDesc.DedicatedSystemMemory / 1048576));
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DEBUG_INFO("Shared Sys Mem : %u MiB", (unsigned)(adapterDesc.SharedSystemMemory / 1048576));
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DEBUG_INFO("Feature Level : 0x%x", this->featureLevel);
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DEBUG_INFO("Capture Size : %u x %u", this->width, this->height);
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@ -294,6 +296,18 @@ static bool dxgi_init()
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goto fail_release_output;
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}
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// map the texture simply to get the pitch and stride
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D3D11_MAPPED_SUBRESOURCE mapping;
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status = ID3D11DeviceContext_Map(this->deviceContext, (ID3D11Resource *)this->texture, 0, D3D11_MAP_READ, 0, &mapping);
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if (FAILED(status))
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{
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DEBUG_WINERROR("Failed to map the texture", status);
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goto fail_release_output;
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}
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this->pitch = mapping.RowPitch;
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this->stride = mapping.RowPitch / 4;
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ID3D11DeviceContext_Unmap(this->deviceContext, (ID3D11Resource *)this->texture, 0);
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this->factory = factory;
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this->adapter = adapter;
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this->output = output;
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@ -370,6 +384,14 @@ static void dxgi_free()
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this = NULL;
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}
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static unsigned int dxgi_getMaxFrameSize()
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{
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assert(this);
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assert(this->initialized);
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return this->height * this->pitch;
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}
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static CaptureResult dxgi_capture()
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{
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assert(this);
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@ -456,10 +478,11 @@ static CaptureResult dxgi_releaseFrame()
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struct CaptureInterface Capture_DXGI =
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{
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.getName = dxgi_getName,
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.create = dxgi_create,
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.init = dxgi_init,
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.deinit = dxgi_deinit,
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.free = dxgi_free,
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.capture = dxgi_capture
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.getName = dxgi_getName,
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.create = dxgi_create,
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.init = dxgi_init,
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.deinit = dxgi_deinit,
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.free = dxgi_free,
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.getMaxFrameSize = dxgi_getMaxFrameSize,
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.capture = dxgi_capture
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};
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@ -85,6 +85,18 @@ int WINAPI WinMain(HINSTANCE hInstnace, HINSTANCE hPrevInstance, LPSTR lpCmdLine
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os_shmemUnmap();
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CloseHandle(shmemHandle);
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if (result != 0)
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{
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MessageBoxA(
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NULL,
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"The Looking Glass host has terminated due to an error.\r\n"
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"\r\n"
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"For more information run the application in a command prompt.",
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"Looking Glass Host",
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MB_ICONERROR);
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}
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return result;
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}
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