/* Looking Glass - KVM FrameRelay (KVMFR) Client Copyright (C) 2017-2019 Geoffrey McRae 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 "main.h" #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if SDL_VIDEO_DRIVER_X11_XINPUT2 #include #endif #include "common/debug.h" #include "common/crash.h" #include "common/KVMFR.h" #include "common/stringutils.h" #include "common/thread.h" #include "common/locking.h" #include "common/event.h" #include "common/ivshmem.h" #include "common/time.h" #include "common/version.h" #include "utils.h" #include "kb.h" #include "ll.h" #include "wm.h" #define RESIZE_TIMEOUT (10 * 1000) // 10ms // forwards static int cursorThread(void * unused); static int renderThread(void * unused); static int frameThread (void * unused); static LGEvent *e_startup = NULL; static LGEvent *e_frame = NULL; static LGThread *t_spice = NULL; static LGThread *t_render = NULL; static LGThread *t_cursor = NULL; static LGThread *t_frame = NULL; static SDL_Cursor *cursor = NULL; static int g_XInputOp; // XInput Opcode static Uint32 e_SDLEvent; // our SDL event enum { LG_EVENT_ALIGN_TO_GUEST }; struct AppState g_state; struct CursorState g_cursor; // this structure is initialized in config.c struct AppParams params = { 0 }; static void setGrab(bool enable); static void setGrabQuiet(bool enable); void handleMouseGrabbed(double ex, double ey); static void handleMouseNormal(double ex, double ey); static void lgInit() { g_state.state = APP_STATE_RUNNING; g_state.resizeDone = true; g_cursor.useScale = false; g_cursor.scale.x = 1.0; g_cursor.scale.y = 1.0; g_cursor.draw = true; g_cursor.inView = false; g_cursor.guest.valid = false; } static bool inputEnabled() { return params.useSpiceInput && !g_state.ignoreInput && ((g_cursor.grab && params.captureInputOnly) || !params.captureInputOnly); } static void alignToGuest() { if (SDL_HasEvent(e_SDLEvent)) return; SDL_Event event; SDL_memset(&event, 0, sizeof(event)); event.type = e_SDLEvent; event.user.code = LG_EVENT_ALIGN_TO_GUEST; SDL_PushEvent(&event); } static void updatePositionInfo() { if (g_state.haveSrcSize) { if (params.keepAspect) { const float srcAspect = (float)g_state.srcSize.y / (float)g_state.srcSize.x; const float wndAspect = (float)g_state.windowH / (float)g_state.windowW; bool force = true; if (params.dontUpscale && g_state.srcSize.x <= g_state.windowW && g_state.srcSize.y <= g_state.windowH) { force = false; g_state.dstRect.w = g_state.srcSize.x; g_state.dstRect.h = g_state.srcSize.y; g_state.dstRect.x = g_state.windowCX - g_state.srcSize.x / 2; g_state.dstRect.y = g_state.windowCY - g_state.srcSize.y / 2; } else if ((int)(wndAspect * 1000) == (int)(srcAspect * 1000)) { force = false; g_state.dstRect.w = g_state.windowW; g_state.dstRect.h = g_state.windowH; g_state.dstRect.x = 0; g_state.dstRect.y = 0; } else if (wndAspect < srcAspect) { g_state.dstRect.w = (float)g_state.windowH / srcAspect; g_state.dstRect.h = g_state.windowH; g_state.dstRect.x = (g_state.windowW >> 1) - (g_state.dstRect.w >> 1); g_state.dstRect.y = 0; } else { g_state.dstRect.w = g_state.windowW; g_state.dstRect.h = (float)g_state.windowW * srcAspect; g_state.dstRect.x = 0; g_state.dstRect.y = (g_state.windowH >> 1) - (g_state.dstRect.h >> 1); } if (force && params.forceAspect) { g_state.resizeTimeout = microtime() + RESIZE_TIMEOUT; g_state.resizeDone = false; } } else { g_state.dstRect.x = 0; g_state.dstRect.y = 0; g_state.dstRect.w = g_state.windowW; g_state.dstRect.h = g_state.windowH; } g_state.dstRect.valid = true; g_cursor.useScale = ( g_state.srcSize.y != g_state.dstRect.h || g_state.srcSize.x != g_state.dstRect.w || g_cursor.guest.dpiScale != 100); g_cursor.scale.x = (float)g_state.srcSize.y / (float)g_state.dstRect.h; g_cursor.scale.y = (float)g_state.srcSize.x / (float)g_state.dstRect.w; g_cursor.dpiScale = g_cursor.guest.dpiScale / 100.0f; } atomic_fetch_add(&g_state.lgrResize, 1); } static int renderThread(void * unused) { if (!g_state.lgr->render_startup(g_state.lgrData, g_state.window)) { g_state.state = APP_STATE_SHUTDOWN; /* unblock threads waiting on the condition */ lgSignalEvent(e_startup); return 1; } /* signal to other threads that the renderer is ready */ lgSignalEvent(e_startup); struct timespec time; clock_gettime(CLOCK_MONOTONIC, &time); while(g_state.state != APP_STATE_SHUTDOWN) { if (params.fpsMin != 0) { lgWaitEventAbs(e_frame, &time); clock_gettime(CLOCK_MONOTONIC, &time); tsAdd(&time, g_state.frameTime); } int resize = atomic_load(&g_state.lgrResize); if (resize) { if (g_state.lgr) g_state.lgr->on_resize(g_state.lgrData, g_state.windowW, g_state.windowH, g_state.dstRect); atomic_compare_exchange_weak(&g_state.lgrResize, &resize, 0); } if (!g_state.lgr->render(g_state.lgrData, g_state.window)) break; if (params.showFPS) { const uint64_t t = nanotime(); g_state.renderTime += t - g_state.lastFrameTime; g_state.lastFrameTime = t; ++g_state.renderCount; if (g_state.renderTime > 1e9) { const float avgUPS = 1000.0f / (((float)g_state.renderTime / atomic_exchange_explicit(&g_state.frameCount, 0, memory_order_acquire)) / 1e6f); const float avgFPS = 1000.0f / (((float)g_state.renderTime / g_state.renderCount) / 1e6f); g_state.lgr->update_fps(g_state.lgrData, avgUPS, avgFPS); g_state.renderTime = 0; g_state.renderCount = 0; } } if (!g_state.resizeDone && g_state.resizeTimeout < microtime()) { SDL_SetWindowSize( g_state.window, g_state.dstRect.w, g_state.dstRect.h ); g_state.resizeDone = true; } } g_state.state = APP_STATE_SHUTDOWN; if (t_cursor) lgJoinThread(t_cursor, NULL); if (t_frame) lgJoinThread(t_frame, NULL); g_state.lgr->deinitialize(g_state.lgrData); g_state.lgr = NULL; return 0; } static int cursorThread(void * unused) { LGMP_STATUS status; PLGMPClientQueue queue; LG_RendererCursor cursorType = LG_CURSOR_COLOR; lgWaitEvent(e_startup, TIMEOUT_INFINITE); // subscribe to the pointer queue while(g_state.state == APP_STATE_RUNNING) { status = lgmpClientSubscribe(g_state.lgmp, LGMP_Q_POINTER, &queue); if (status == LGMP_OK) break; if (status == LGMP_ERR_NO_SUCH_QUEUE) { usleep(1000); continue; } DEBUG_ERROR("lgmpClientSubscribe Failed: %s", lgmpStatusString(status)); g_state.state = APP_STATE_SHUTDOWN; break; } while(g_state.state == APP_STATE_RUNNING) { LGMPMessage msg; if ((status = lgmpClientProcess(queue, &msg)) != LGMP_OK) { if (status == LGMP_ERR_QUEUE_EMPTY) { if (g_cursor.redraw && g_cursor.guest.valid) { g_cursor.redraw = false; g_state.lgr->on_mouse_event ( g_state.lgrData, g_cursor.guest.visible && g_cursor.draw, g_cursor.guest.x, g_cursor.guest.y ); lgSignalEvent(e_frame); } const struct timespec req = { .tv_sec = 0, .tv_nsec = params.cursorPollInterval * 1000L }; struct timespec rem; while(nanosleep(&req, &rem) < 0) if (errno != -EINTR) { DEBUG_ERROR("nanosleep failed"); break; } continue; } if (status == LGMP_ERR_INVALID_SESSION) g_state.state = APP_STATE_RESTART; else { DEBUG_ERROR("lgmpClientProcess Failed: %s", lgmpStatusString(status)); g_state.state = APP_STATE_SHUTDOWN; } break; } KVMFRCursor * cursor = (KVMFRCursor *)msg.mem; g_cursor.guest.visible = msg.udata & CURSOR_FLAG_VISIBLE; if (msg.udata & CURSOR_FLAG_SHAPE) { switch(cursor->type) { case CURSOR_TYPE_COLOR : cursorType = LG_CURSOR_COLOR ; break; case CURSOR_TYPE_MONOCHROME : cursorType = LG_CURSOR_MONOCHROME ; break; case CURSOR_TYPE_MASKED_COLOR: cursorType = LG_CURSOR_MASKED_COLOR; break; default: DEBUG_ERROR("Invalid cursor type"); lgmpClientMessageDone(queue); continue; } g_cursor.guest.hx = cursor->hx; g_cursor.guest.hy = cursor->hy; const uint8_t * data = (const uint8_t *)(cursor + 1); if (!g_state.lgr->on_mouse_shape( g_state.lgrData, cursorType, cursor->width, cursor->height, cursor->pitch, data) ) { DEBUG_ERROR("Failed to update mouse shape"); lgmpClientMessageDone(queue); continue; } } if (msg.udata & CURSOR_FLAG_POSITION) { bool valid = g_cursor.guest.valid; g_cursor.guest.x = cursor->x; g_cursor.guest.y = cursor->y; g_cursor.guest.valid = true; // if the state just became valid if (valid != true && inputEnabled()) alignToGuest(); } lgmpClientMessageDone(queue); g_cursor.redraw = false; g_state.lgr->on_mouse_event ( g_state.lgrData, g_cursor.guest.visible && g_cursor.draw, g_cursor.guest.x, g_cursor.guest.y ); if (params.mouseRedraw) lgSignalEvent(e_frame); } lgmpClientUnsubscribe(&queue); return 0; } static int frameThread(void * unused) { struct DMAFrameInfo { KVMFRFrame * frame; size_t dataSize; int fd; }; LGMP_STATUS status; PLGMPClientQueue queue; uint32_t formatVer = 0; bool formatValid = false; size_t dataSize; LG_RendererFormat lgrFormat; struct DMAFrameInfo dmaInfo[LGMP_Q_FRAME_LEN] = {0}; const bool useDMA = params.allowDMA && ivshmemHasDMA(&g_state.shm) && g_state.lgr->supports && g_state.lgr->supports(g_state.lgrData, LG_SUPPORTS_DMABUF); if (useDMA) DEBUG_INFO("Using DMA buffer support"); SDL_SetThreadPriority(SDL_THREAD_PRIORITY_HIGH); lgWaitEvent(e_startup, TIMEOUT_INFINITE); if (g_state.state != APP_STATE_RUNNING) return 0; // subscribe to the frame queue while(g_state.state == APP_STATE_RUNNING) { status = lgmpClientSubscribe(g_state.lgmp, LGMP_Q_FRAME, &queue); if (status == LGMP_OK) break; if (status == LGMP_ERR_NO_SUCH_QUEUE) { usleep(1000); continue; } DEBUG_ERROR("lgmpClientSubscribe Failed: %s", lgmpStatusString(status)); g_state.state = APP_STATE_SHUTDOWN; break; } while(g_state.state == APP_STATE_RUNNING && !g_state.stopVideo) { LGMPMessage msg; if ((status = lgmpClientProcess(queue, &msg)) != LGMP_OK) { if (status == LGMP_ERR_QUEUE_EMPTY) { const struct timespec req = { .tv_sec = 0, .tv_nsec = params.framePollInterval * 1000L }; struct timespec rem; while(nanosleep(&req, &rem) < 0) if (errno != -EINTR) { DEBUG_ERROR("nanosleep failed"); break; } continue; } if (status == LGMP_ERR_INVALID_SESSION) g_state.state = APP_STATE_RESTART; else { DEBUG_ERROR("lgmpClientProcess Failed: %s", lgmpStatusString(status)); g_state.state = APP_STATE_SHUTDOWN; } break; } KVMFRFrame * frame = (KVMFRFrame *)msg.mem; struct DMAFrameInfo *dma = NULL; if (!formatValid || frame->formatVer != formatVer) { // setup the renderer format with the frame format details lgrFormat.type = frame->type; lgrFormat.width = frame->width; lgrFormat.height = frame->height; lgrFormat.stride = frame->stride; lgrFormat.pitch = frame->pitch; bool error = false; switch(frame->type) { case FRAME_TYPE_RGBA: case FRAME_TYPE_BGRA: case FRAME_TYPE_RGBA10: dataSize = lgrFormat.height * lgrFormat.pitch; lgrFormat.bpp = 32; break; case FRAME_TYPE_RGBA16F: dataSize = lgrFormat.height * lgrFormat.pitch; lgrFormat.bpp = 64; break; case FRAME_TYPE_YUV420: dataSize = lgrFormat.height * lgrFormat.width; dataSize += (dataSize / 4) * 2; lgrFormat.bpp = 12; break; default: DEBUG_ERROR("Unsupported frameType"); error = true; break; } if (error) { lgmpClientMessageDone(queue); g_state.state = APP_STATE_SHUTDOWN; break; } formatValid = true; formatVer = frame->formatVer; DEBUG_INFO("Format: %s %ux%u %u %u", FrameTypeStr[frame->type], frame->width, frame->height, frame->stride, frame->pitch); if (!g_state.lgr->on_frame_format(g_state.lgrData, lgrFormat, useDMA)) { DEBUG_ERROR("renderer failed to configure format"); g_state.state = APP_STATE_SHUTDOWN; break; } g_state.srcSize.x = lgrFormat.width; g_state.srcSize.y = lgrFormat.height; g_state.haveSrcSize = true; if (params.autoResize) SDL_SetWindowSize(g_state.window, lgrFormat.width, lgrFormat.height); g_cursor.guest.dpiScale = frame->mouseScalePercent; updatePositionInfo(); } if (useDMA) { /* find the existing dma buffer if it exists */ for(int i = 0; i < sizeof(dmaInfo) / sizeof(struct DMAFrameInfo); ++i) { if (dmaInfo[i].frame == frame) { dma = &dmaInfo[i]; /* if it's too small close it */ if (dma->dataSize < dataSize) { close(dma->fd); dma->fd = -1; } break; } } /* otherwise find a free buffer for use */ if (!dma) for(int i = 0; i < sizeof(dmaInfo) / sizeof(struct DMAFrameInfo); ++i) { if (!dmaInfo[i].frame) { dma = &dmaInfo[i]; dma->frame = frame; dma->fd = -1; break; } } /* open the buffer */ if (dma->fd == -1) { const uintptr_t pos = (uintptr_t)msg.mem - (uintptr_t)g_state.shm.mem; const uintptr_t offset = (uintptr_t)frame->offset + FrameBufferStructSize; dma->dataSize = dataSize; dma->fd = ivshmemGetDMABuf(&g_state.shm, pos + offset, dataSize); if (dma->fd < 0) { DEBUG_ERROR("Failed to get the DMA buffer for the frame"); g_state.state = APP_STATE_SHUTDOWN; break; } } } FrameBuffer * fb = (FrameBuffer *)(((uint8_t*)frame) + frame->offset); if (!g_state.lgr->on_frame(g_state.lgrData, fb, useDMA ? dma->fd : -1)) { lgmpClientMessageDone(queue); DEBUG_ERROR("renderer on frame returned failure"); g_state.state = APP_STATE_SHUTDOWN; break; } atomic_fetch_add_explicit(&g_state.frameCount, 1, memory_order_relaxed); lgSignalEvent(e_frame); lgmpClientMessageDone(queue); } lgmpClientUnsubscribe(&queue); g_state.lgr->on_restart(g_state.lgrData); if (useDMA) { for(int i = 0; i < sizeof(dmaInfo) / sizeof(struct DMAFrameInfo); ++i) if (dmaInfo[i].fd >= 0) close(dmaInfo[i].fd); } return 0; } int spiceThread(void * arg) { while(g_state.state != APP_STATE_SHUTDOWN) if (!spice_process(1000)) { if (g_state.state != APP_STATE_SHUTDOWN) { g_state.state = APP_STATE_SHUTDOWN; DEBUG_ERROR("failed to process spice messages"); } break; } g_state.state = APP_STATE_SHUTDOWN; return 0; } static inline const uint32_t mapScancode(SDL_Scancode scancode) { uint32_t ps2; if (scancode > (sizeof(usb_to_ps2) / sizeof(uint32_t)) || (ps2 = usb_to_ps2[scancode]) == 0) { DEBUG_WARN("Unable to map USB scan code: %x\n", scancode); return 0; } return ps2; } static LG_ClipboardData spice_type_to_clipboard_type(const SpiceDataType type) { switch(type) { case SPICE_DATA_TEXT: return LG_CLIPBOARD_DATA_TEXT; break; case SPICE_DATA_PNG : return LG_CLIPBOARD_DATA_PNG ; break; case SPICE_DATA_BMP : return LG_CLIPBOARD_DATA_BMP ; break; case SPICE_DATA_TIFF: return LG_CLIPBOARD_DATA_TIFF; break; case SPICE_DATA_JPEG: return LG_CLIPBOARD_DATA_JPEG; break; default: DEBUG_ERROR("invalid spice data type"); return LG_CLIPBOARD_DATA_NONE; } } static SpiceDataType clipboard_type_to_spice_type(const LG_ClipboardData type) { switch(type) { case LG_CLIPBOARD_DATA_TEXT: return SPICE_DATA_TEXT; break; case LG_CLIPBOARD_DATA_PNG : return SPICE_DATA_PNG ; break; case LG_CLIPBOARD_DATA_BMP : return SPICE_DATA_BMP ; break; case LG_CLIPBOARD_DATA_TIFF: return SPICE_DATA_TIFF; break; case LG_CLIPBOARD_DATA_JPEG: return SPICE_DATA_JPEG; break; default: DEBUG_ERROR("invalid clipboard data type"); return SPICE_DATA_NONE; } } void clipboardRelease() { if (!params.clipboardToVM) return; spice_clipboard_release(); } void clipboardNotify(const LG_ClipboardData type, size_t size) { if (!params.clipboardToVM) return; if (type == LG_CLIPBOARD_DATA_NONE) { spice_clipboard_release(); return; } g_state.cbType = clipboard_type_to_spice_type(type); g_state.cbChunked = size > 0; g_state.cbXfer = size; spice_clipboard_grab(g_state.cbType); if (size) spice_clipboard_data_start(g_state.cbType, size); } void clipboardData(const LG_ClipboardData type, uint8_t * data, size_t size) { if (!params.clipboardToVM) return; if (g_state.cbChunked && size > g_state.cbXfer) { DEBUG_ERROR("refusing to send more then cbXfer bytes for chunked xfer"); size = g_state.cbXfer; } if (!g_state.cbChunked) spice_clipboard_data_start(g_state.cbType, size); spice_clipboard_data(g_state.cbType, data, (uint32_t)size); g_state.cbXfer -= size; } void clipboardRequest(const LG_ClipboardReplyFn replyFn, void * opaque) { if (!params.clipboardToLocal) return; struct CBRequest * cbr = (struct CBRequest *)malloc(sizeof(struct CBRequest)); cbr->type = g_state.cbType; cbr->replyFn = replyFn; cbr->opaque = opaque; ll_push(g_state.cbRequestList, cbr); spice_clipboard_request(g_state.cbType); } void spiceClipboardNotice(const SpiceDataType type) { if (!params.clipboardToLocal) return; if (!g_state.lgc || !g_state.lgc->notice) return; g_state.cbType = type; g_state.lgc->notice(clipboardRequest, spice_type_to_clipboard_type(type)); } void spiceClipboardData(const SpiceDataType type, uint8_t * buffer, uint32_t size) { if (!params.clipboardToLocal) return; if (type == SPICE_DATA_TEXT) { // dos2unix uint8_t * p = buffer; uint32_t newSize = size; for(uint32_t i = 0; i < size; ++i) { uint8_t c = buffer[i]; if (c == '\r') { --newSize; continue; } *p++ = c; } size = newSize; } struct CBRequest * cbr; if (ll_shift(g_state.cbRequestList, (void **)&cbr)) { cbr->replyFn(cbr->opaque, spice_type_to_clipboard_type(type), buffer, size); free(cbr); } } void spiceClipboardRelease() { if (!params.clipboardToLocal) return; if (g_state.lgc && g_state.lgc->release) g_state.lgc->release(); } void spiceClipboardRequest(const SpiceDataType type) { if (!params.clipboardToVM) return; if (g_state.lgc && g_state.lgc->request) g_state.lgc->request(spice_type_to_clipboard_type(type)); } static void warpMouse(int x, int y, bool disable) { if (g_cursor.warpState == WARP_STATE_OFF) return; if (disable) g_cursor.warpState = WARP_STATE_OFF; if (g_cursor.pos.x == x && g_cursor.pos.y == y) return; wmWarpMouse(x, y); } static bool isValidCursorLocation(int x, int y) { const int displays = SDL_GetNumVideoDisplays(); for(int i = 0; i < displays; ++i) { SDL_Rect r; SDL_GetDisplayBounds(i, &r); if ((x >= r.x && x < r.x + r.w) && (y >= r.y && y < r.y + r.h)) return true; } return false; } static void cursorToInt(double ex, double ey, int *x, int *y) { /* only smooth if enabled and not using raw mode */ if (params.mouseSmoothing && !(g_cursor.grab && params.rawMouse)) { static struct DoublePoint last = { 0 }; ex = last.x = (last.x + ex) / 2.0; ey = last.y = (last.y + ey) / 2.0; } /* convert to int accumulating the fractional error */ ex += g_cursor.acc.x; ey += g_cursor.acc.y; g_cursor.acc.x = modf(ex, &ex); g_cursor.acc.y = modf(ey, &ey); *x = (int)ex; *y = (int)ey; } void handleMouseGrabbed(double ex, double ey) { int x, y; if (params.rawMouse && !g_cursor.useScale) { /* raw unscaled input are always round numbers */ x = floor(ex); y = floor(ey); } else { /* apply sensitivity */ ex = (ex / 10.0) * (g_cursor.sens + 10); ey = (ey / 10.0) * (g_cursor.sens + 10); cursorToInt(ex, ey, &x, &y); } if (x == 0 && y == 0) return; if (!spice_mouse_motion(x, y)) DEBUG_ERROR("failed to send mouse motion message"); } static void guestCurToLocal(struct DoublePoint *local) { local->x = (g_cursor.guest.x + g_cursor.guest.hx) / g_cursor.scale.x; local->y = (g_cursor.guest.y + g_cursor.guest.hy) / g_cursor.scale.y; } // On Wayland, our normal cursor logic does not work due to the lack of cursor // warp support. Instead, we attempt a best-effort emulation which works with a // 1:1 mouse movement patch applied in the guest. For anything fancy, use // capture mode. static void handleMouseWayland() { /* translate the guests position to our coordinate space */ struct DoublePoint local; guestCurToLocal(&local); double ex = (g_cursor.pos.x - local.x) / g_cursor.dpiScale; double ey = (g_cursor.pos.y - local.y) / g_cursor.dpiScale; int x, y; cursorToInt(ex, ey, &x, &y); g_cursor.guest.x += x; g_cursor.guest.y += y; if (!spice_mouse_motion(x, y)) DEBUG_ERROR("failed to send mouse motion message"); } static void handleMouseNormal(double ex, double ey) { /* if we don't have the current cursor pos just send cursor movements */ if (!g_cursor.guest.valid) { if (g_cursor.grab) handleMouseGrabbed(ex, ey); return; } if (g_state.wminfo.subsystem == SDL_SYSWM_WAYLAND) { handleMouseWayland(); return; } /* scale the movement to the guest */ if (g_cursor.useScale && params.scaleMouseInput) { ex *= g_cursor.scale.x / g_cursor.dpiScale; ey *= g_cursor.scale.y / g_cursor.dpiScale; } bool testExit = true; /* if the cursor was outside the viewport, check if it moved in */ if (!g_cursor.inView) { const bool inView = g_cursor.pos.x >= g_state.dstRect.x && g_cursor.pos.x < g_state.dstRect.x + g_state.dstRect.w && g_cursor.pos.y >= g_state.dstRect.y && g_cursor.pos.y < g_state.dstRect.y + g_state.dstRect.h; if (inView) { if (params.hideMouse) SDL_ShowCursor(SDL_DISABLE); if (g_state.focused) { /* the cursor moved in, enable grab mode */ g_cursor.inView = true; g_cursor.draw = true; g_cursor.redraw = true; g_cursor.warpState = WARP_STATE_ON; wmGrabPointer(); } struct DoublePoint guest = { .x = (g_cursor.pos.x - g_state.dstRect.x) * g_cursor.scale.x, .y = (g_cursor.pos.y - g_state.dstRect.y) * g_cursor.scale.y }; /* add the difference to the offset */ ex += guest.x - (g_cursor.guest.x + g_cursor.guest.hx); ey += guest.y - (g_cursor.guest.y + g_cursor.guest.hy); /* don't test for an exit as we just entered, we can get into a enter/exit * loop otherwise */ testExit = false; } else { /* nothing to do if the cursor is not in the guest window */ return; } } /* if we are in "autoCapture" and the delta was large don't test for exit */ if (params.autoCapture && (abs(ex) > 100.0 / g_cursor.scale.x || abs(ey) > 100.0 / g_cursor.scale.y)) testExit = false; /* translate the guests position to our coordinate space */ struct DoublePoint local; guestCurToLocal(&local); /* check if the move would push the cursor outside the guest's viewport */ if (testExit && ( local.x + ex < 0.0 || local.y + ey < 0.0 || local.x + ex >= g_state.dstRect.w || local.y + ey >= g_state.dstRect.h)) { local.x += ex; local.y += ey; const int tx = ((local.x <= 0.0) ? floor(local.x) : ceil(local.x)) + g_state.dstRect.x; const int ty = ((local.y <= 0.0) ? floor(local.y) : ceil(local.y)) + g_state.dstRect.y; if (isValidCursorLocation( g_state.windowPos.x + g_state.border.x + tx, g_state.windowPos.y + g_state.border.y + ty)) { if (params.hideMouse) SDL_ShowCursor(SDL_ENABLE); g_cursor.inView = false; if(!params.alwaysShowCursor) g_cursor.draw = false; g_cursor.redraw = true; /* pre-empt the window leave flag if the warp will leave our window */ if (tx < 0 || ty < 0 || tx > g_state.windowW || ty > g_state.windowH) g_cursor.inWindow = false; /* ungrab the pointer and move the local cursor to the exit point */ wmUngrabPointer(); warpMouse(tx, ty, true); return; } } int x, y; cursorToInt(ex, ey, &x, &y); if (x == 0 && y == 0) return; if (params.autoCapture) { g_cursor.delta.x += x; g_cursor.delta.y += y; if (abs(g_cursor.delta.x) > 50 || abs(g_cursor.delta.y) > 50) { g_cursor.delta.x = 0; g_cursor.delta.y = 0; warpMouse(g_state.windowCX, g_state.windowCY, false); } g_cursor.guest.x = g_state.srcSize.x / 2; g_cursor.guest.y = g_state.srcSize.y / 2; } else { /* assume the mouse will move to the location we attempt to move it to so we * avoid warp out of window issues. The cursorThread will correct this if * wrong after the movement has ocurred on the guest */ g_cursor.guest.x += x; g_cursor.guest.y += y; } if (!spice_mouse_motion(x, y)) DEBUG_ERROR("failed to send mouse motion message"); } static void handleResizeEvent(unsigned int w, unsigned int h) { SDL_GetWindowBordersSize(g_state.window, &g_state.border.y, &g_state.border.x, &g_state.border.h, &g_state.border.w ); g_state.windowW = w; g_state.windowH = h; g_state.windowCX = w / 2; g_state.windowCY = h / 2; updatePositionInfo(); if (inputEnabled()) { /* if the window is moved/resized causing a loss of focus while grabbed, it * makes it impossible to re-focus the window, so we quietly re-enter * capture if we were already in it */ if (g_cursor.grab) { setGrabQuiet(false); setGrabQuiet(true); } alignToGuest(); } } static void handleWindowLeave() { g_cursor.inWindow = false; g_cursor.inView = false; if (!inputEnabled()) return; if (!params.alwaysShowCursor) g_cursor.draw = false; g_cursor.redraw = true; } static void handleWindowEnter() { g_cursor.inWindow = true; if (!inputEnabled()) return; g_cursor.draw = true; g_cursor.redraw = true; } static void setGrab(bool enable) { setGrabQuiet(enable); app_alert( g_cursor.grab ? LG_ALERT_SUCCESS : LG_ALERT_WARNING, g_cursor.grab ? "Capture Enabled" : "Capture Disabled" ); } static void setGrabQuiet(bool enable) { /* we always do this so that at init the cursor is in the right state */ if (params.captureInputOnly && params.hideMouse) SDL_ShowCursor(enable ? SDL_DISABLE : SDL_ENABLE); if (g_cursor.grab == enable) return; g_cursor.grab = enable; g_cursor.acc.x = 0.0; g_cursor.acc.y = 0.0; if (enable) { wmGrabPointer(); if (params.grabKeyboard) wmGrabKeyboard(); } else { if (params.grabKeyboard) { if (!g_state.focused || !params.grabKeyboardOnFocus) wmUngrabKeyboard(); } wmUngrabPointer(); } // if exiting capture when input on capture only, we want to show the cursor if (!enable && (params.captureInputOnly || !params.hideMouse)) alignToGuest(); if (g_cursor.grab) g_cursor.inView = true; } int eventFilter(void * userdata, SDL_Event * event) { if (event->type == e_SDLEvent) { switch(event->user.code) { case LG_EVENT_ALIGN_TO_GUEST: { if (!g_cursor.guest.valid || !g_state.focused) break; struct DoublePoint local; guestCurToLocal(&local); warpMouse(round(local.x), round(local.y), false); break; } } return 0; } switch(event->type) { case SDL_QUIT: { if (!params.ignoreQuit) { DEBUG_INFO("Quit event received, exiting..."); g_state.state = APP_STATE_SHUTDOWN; } return 0; } case SDL_WINDOWEVENT: { switch(event->window.event) { case SDL_WINDOWEVENT_ENTER: if (g_state.wminfo.subsystem == SDL_SYSWM_WAYLAND) g_cursor.inView = true; if (g_state.wminfo.subsystem != SDL_SYSWM_X11) handleWindowEnter(); break; case SDL_WINDOWEVENT_LEAVE: if (g_state.wminfo.subsystem == SDL_SYSWM_WAYLAND) g_cursor.inView = false; if (g_state.wminfo.subsystem != SDL_SYSWM_X11) handleWindowLeave(); break; case SDL_WINDOWEVENT_FOCUS_GAINED: if (g_state.wminfo.subsystem != SDL_SYSWM_X11) { g_state.focused = true; if (!inputEnabled()) break; if (params.grabKeyboardOnFocus) wmGrabKeyboard(); } break; case SDL_WINDOWEVENT_FOCUS_LOST: if (g_state.wminfo.subsystem != SDL_SYSWM_X11) { g_state.focused = false; if (!inputEnabled()) break; if (params.grabKeyboardOnFocus) wmUngrabKeyboard(); } break; case SDL_WINDOWEVENT_SIZE_CHANGED: case SDL_WINDOWEVENT_RESIZED: if (g_state.wminfo.subsystem != SDL_SYSWM_X11) handleResizeEvent(event->window.data1, event->window.data2); break; case SDL_WINDOWEVENT_MOVED: if (g_state.wminfo.subsystem != SDL_SYSWM_X11) { g_state.windowPos.x = event->window.data1; g_state.windowPos.y = event->window.data2; } break; case SDL_WINDOWEVENT_CLOSE: if (!params.ignoreQuit || !g_cursor.inView) g_state.state = APP_STATE_SHUTDOWN; break; } return 0; } case SDL_SYSWMEVENT: { // When the window manager forces the window size after calling SDL_SetWindowSize, SDL // ignores this update and caches the incorrect window size. As such all related details // are incorect including mouse movement information as it clips to the old window size. if (g_state.wminfo.subsystem == SDL_SYSWM_X11) { XEvent xe = event->syswm.msg->msg.x11.event; switch(xe.type) { case ConfigureNotify: { /* the window may have been re-parented so we need to translate to * ensure we get the screen top left position of the window */ Window child; XTranslateCoordinates(g_state.wminfo.info.x11.display, g_state.wminfo.info.x11.window, DefaultRootWindow(g_state.wminfo.info.x11.display), 0, 0, &g_state.windowPos.x, &g_state.windowPos.y, &child); handleResizeEvent(xe.xconfigure.width, xe.xconfigure.height); break; } #if SDL_VIDEO_DRIVER_X11_XINPUT2 /* support movements via XInput2 */ case GenericEvent: { if (!inputEnabled()) break; XGenericEventCookie *cookie = (XGenericEventCookie*)&xe.xcookie; if (cookie->extension != g_XInputOp) break; switch(cookie->evtype) { case XI_Motion: { if (!g_cursor.inWindow) break; XIDeviceEvent *device = cookie->data; g_cursor.pos.x = device->event_x; g_cursor.pos.y = device->event_y; break; } case XI_RawMotion: { if (!g_cursor.inWindow) break; XIRawEvent *raw = cookie->data; double raw_axis[2]; double axis[2]; /* select the active validators for the X & Y axis */ double *valuator = raw->valuators.values; double *r_value = raw->raw_values; int count = 0; for(int i = 0; i < raw->valuators.mask_len * 8; ++i) { if (XIMaskIsSet(raw->valuators.mask, i)) { raw_axis[count] = *r_value; axis [count] = *valuator; ++count; if (count == 2) break; ++valuator; ++r_value; } } /* filter out scroll wheel and other events */ if (count < 2) break; /* filter out duplicate events */ static Time prev_time = 0; static double prev_axis[2] = {0}; if (raw->time == prev_time && axis[0] == prev_axis[0] && axis[1] == prev_axis[1]) break; prev_time = raw->time; prev_axis[0] = axis[0]; prev_axis[1] = axis[1]; if (g_cursor.grab) { if (params.rawMouse) handleMouseGrabbed(raw_axis[0], raw_axis[1]); else handleMouseGrabbed(axis[0], axis[1]); } else if (g_cursor.inWindow) handleMouseNormal(axis[0], axis[1]); break; } } break; } #endif case EnterNotify: { int x, y; Window child; XTranslateCoordinates(g_state.wminfo.info.x11.display, DefaultRootWindow(g_state.wminfo.info.x11.display), g_state.wminfo.info.x11.window, xe.xcrossing.x_root, xe.xcrossing.y_root, &x, &y, &child); g_cursor.pos.x = x; g_cursor.pos.y = y; handleWindowEnter(); break; } case LeaveNotify: { if (xe.xcrossing.mode != NotifyNormal) break; int x, y; Window child; XTranslateCoordinates(g_state.wminfo.info.x11.display, DefaultRootWindow(g_state.wminfo.info.x11.display), g_state.wminfo.info.x11.window, xe.xcrossing.x_root, xe.xcrossing.y_root, &x, &y, &child); g_cursor.pos.x = x; g_cursor.pos.y = y; handleWindowLeave(); break; } case FocusIn: g_state.focused = true; if (!inputEnabled()) break; if (xe.xfocus.mode == NotifyNormal || xe.xfocus.mode == NotifyUngrab) { if (params.grabKeyboardOnFocus) wmGrabKeyboard(); } break; case FocusOut: g_state.focused = false; if (!inputEnabled()) break; if (xe.xfocus.mode == NotifyNormal || xe.xfocus.mode == NotifyWhileGrabbed) { if (g_cursor.grab) setGrab(false); else { if (params.grabKeyboardOnFocus) wmUngrabKeyboard(); } } break; } } if (params.useSpiceClipboard && g_state.lgc && g_state.lgc->wmevent) g_state.lgc->wmevent(event->syswm.msg); return 0; } case SDL_MOUSEMOTION: { if (g_state.wminfo.subsystem == SDL_SYSWM_X11) break; g_cursor.pos.x = event->motion.x; g_cursor.pos.y = event->motion.y; if (g_cursor.grab) { // On Wayland, wm.c calls handleMouseGrabbed, bypassing the SDL event // loop. if (g_state.wminfo.subsystem != SDL_SYSWM_WAYLAND) handleMouseGrabbed(event->motion.xrel, event->motion.yrel); } else handleMouseNormal(event->motion.xrel, event->motion.yrel); break; } case SDL_KEYDOWN: { SDL_Scancode sc = event->key.keysym.scancode; if (sc == params.escapeKey && !g_state.escapeActive) { g_state.escapeActive = true; g_state.escapeAction = -1; break; } if (g_state.escapeActive) { g_state.escapeAction = sc; break; } if (!inputEnabled()) break; if (params.ignoreWindowsKeys && (sc == SDL_SCANCODE_LGUI || sc == SDL_SCANCODE_RGUI)) break; uint32_t scancode = mapScancode(sc); if (scancode == 0) break; if (!g_state.keyDown[sc]) { if (spice_key_down(scancode)) g_state.keyDown[sc] = true; else { DEBUG_ERROR("SDL_KEYDOWN: failed to send message"); break; } } break; } case SDL_KEYUP: { SDL_Scancode sc = event->key.keysym.scancode; if (g_state.escapeActive) { if (g_state.escapeAction == -1) { if (params.useSpiceInput) setGrab(!g_cursor.grab); } else { KeybindHandle handle = g_state.bindings[sc]; if (handle) { handle->callback(sc, handle->opaque); break; } } if (sc == params.escapeKey) g_state.escapeActive = false; } if (!inputEnabled()) break; // avoid sending key up events when we didn't send a down if (!g_state.keyDown[sc]) break; if (params.ignoreWindowsKeys && (sc == SDL_SCANCODE_LGUI || sc == SDL_SCANCODE_RGUI)) break; uint32_t scancode = mapScancode(sc); if (scancode == 0) break; if (spice_key_up(scancode)) g_state.keyDown[sc] = false; else { DEBUG_ERROR("SDL_KEYUP: failed to send message"); break; } break; } case SDL_MOUSEWHEEL: if (!inputEnabled() || !g_cursor.inView) break; if ( !spice_mouse_press (event->wheel.y > 0 ? 4 : 5) || !spice_mouse_release(event->wheel.y > 0 ? 4 : 5) ) { DEBUG_ERROR("SDL_MOUSEWHEEL: failed to send messages"); break; } break; case SDL_MOUSEBUTTONDOWN: { if (!inputEnabled() || !g_cursor.inView) break; int button = event->button.button; if (button > 3) button += 2; if (!spice_mouse_press(button)) { DEBUG_ERROR("SDL_MOUSEBUTTONDOWN: failed to send message"); break; } break; } case SDL_MOUSEBUTTONUP: { if (!inputEnabled() || !g_cursor.inView) break; int button = event->button.button; if (button > 3) button += 2; if (!spice_mouse_release(button)) { DEBUG_ERROR("SDL_MOUSEBUTTONUP: failed to send message"); break; } break; } } // consume all events return 0; } void int_handler(int signal) { switch(signal) { case SIGINT: case SIGTERM: DEBUG_INFO("Caught signal, shutting down..."); g_state.state = APP_STATE_SHUTDOWN; break; } } static bool try_renderer(const int index, const LG_RendererParams lgrParams, Uint32 * sdlFlags) { const LG_Renderer *r = LG_Renderers[index]; if (!IS_LG_RENDERER_VALID(r)) { DEBUG_ERROR("FIXME: Renderer %d is invalid, skipping", index); return false; } // create the renderer g_state.lgrData = NULL; if (!r->create(&g_state.lgrData, lgrParams)) return false; // initialize the renderer if (!r->initialize(g_state.lgrData, sdlFlags)) { r->deinitialize(g_state.lgrData); return false; } DEBUG_INFO("Using Renderer: %s", r->get_name()); return true; } static void toggle_fullscreen(SDL_Scancode key, void * opaque) { SDL_SetWindowFullscreen(g_state.window, params.fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP); params.fullscreen = !params.fullscreen; } static void toggle_video(SDL_Scancode key, void * opaque) { g_state.stopVideo = !g_state.stopVideo; app_alert( LG_ALERT_INFO, g_state.stopVideo ? "Video Stream Disabled" : "Video Stream Enabled" ); if (!g_state.stopVideo) { if (t_frame) { lgJoinThread(t_frame, NULL); t_frame = NULL; } if (!lgCreateThread("frameThread", frameThread, NULL, &t_frame)) DEBUG_ERROR("frame create thread failed"); } } static void toggle_input(SDL_Scancode key, void * opaque) { g_state.ignoreInput = !g_state.ignoreInput; app_alert( LG_ALERT_INFO, g_state.ignoreInput ? "Input Disabled" : "Input Enabled" ); } static void quit(SDL_Scancode key, void * opaque) { g_state.state = APP_STATE_SHUTDOWN; } static void mouse_sens_inc(SDL_Scancode key, void * opaque) { char * msg; if (g_cursor.sens < 9) ++g_cursor.sens; alloc_sprintf(&msg, "Sensitivity: %s%d", g_cursor.sens > 0 ? "+" : "", g_cursor.sens); app_alert( LG_ALERT_INFO, msg ); free(msg); } static void mouse_sens_dec(SDL_Scancode key, void * opaque) { char * msg; if (g_cursor.sens > -9) --g_cursor.sens; alloc_sprintf(&msg, "Sensitivity: %s%d", g_cursor.sens > 0 ? "+" : "", g_cursor.sens); app_alert( LG_ALERT_INFO, msg ); free(msg); } static void ctrl_alt_fn(SDL_Scancode key, void * opaque) { const uint32_t ctrl = mapScancode(SDL_SCANCODE_LCTRL); const uint32_t alt = mapScancode(SDL_SCANCODE_LALT ); const uint32_t fn = mapScancode(key); spice_key_down(ctrl); spice_key_down(alt ); spice_key_down(fn ); spice_key_up(ctrl); spice_key_up(alt ); spice_key_up(fn ); } static void key_passthrough(SDL_Scancode key, void * opaque) { const uint32_t sc = mapScancode(key); spice_key_down(sc); spice_key_up (sc); } static void register_key_binds() { g_state.kbFS = app_register_keybind(SDL_SCANCODE_F , toggle_fullscreen, NULL); g_state.kbVideo = app_register_keybind(SDL_SCANCODE_V , toggle_video , NULL); g_state.kbInput = app_register_keybind(SDL_SCANCODE_I , toggle_input , NULL); g_state.kbQuit = app_register_keybind(SDL_SCANCODE_Q , quit , NULL); g_state.kbMouseSensInc = app_register_keybind(SDL_SCANCODE_INSERT, mouse_sens_inc , NULL); g_state.kbMouseSensDec = app_register_keybind(SDL_SCANCODE_DELETE, mouse_sens_dec , NULL); g_state.kbCtrlAltFn[0 ] = app_register_keybind(SDL_SCANCODE_F1 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[1 ] = app_register_keybind(SDL_SCANCODE_F2 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[2 ] = app_register_keybind(SDL_SCANCODE_F3 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[3 ] = app_register_keybind(SDL_SCANCODE_F4 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[4 ] = app_register_keybind(SDL_SCANCODE_F5 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[5 ] = app_register_keybind(SDL_SCANCODE_F6 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[6 ] = app_register_keybind(SDL_SCANCODE_F7 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[7 ] = app_register_keybind(SDL_SCANCODE_F8 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[8 ] = app_register_keybind(SDL_SCANCODE_F9 , ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[9 ] = app_register_keybind(SDL_SCANCODE_F10, ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[10] = app_register_keybind(SDL_SCANCODE_F11, ctrl_alt_fn, NULL); g_state.kbCtrlAltFn[11] = app_register_keybind(SDL_SCANCODE_F12, ctrl_alt_fn, NULL); g_state.kbPass[0] = app_register_keybind(SDL_SCANCODE_LGUI, key_passthrough, NULL); g_state.kbPass[1] = app_register_keybind(SDL_SCANCODE_RGUI, key_passthrough, NULL); } static void release_key_binds() { app_release_keybind(&g_state.kbFS ); app_release_keybind(&g_state.kbVideo); app_release_keybind(&g_state.kbInput); app_release_keybind(&g_state.kbQuit ); app_release_keybind(&g_state.kbMouseSensInc); app_release_keybind(&g_state.kbMouseSensDec); for(int i = 0; i < 12; ++i) app_release_keybind(&g_state.kbCtrlAltFn[i]); for(int i = 0; i < 2; ++i) app_release_keybind(&g_state.kbPass[i]); } static void initSDLCursor() { const uint8_t data[4] = {0xf, 0x9, 0x9, 0xf}; const uint8_t mask[4] = {0xf, 0xf, 0xf, 0xf}; cursor = SDL_CreateCursor(data, mask, 8, 4, 4, 0); SDL_SetCursor(cursor); } static int lg_run() { memset(&g_state, 0, sizeof(g_state)); lgInit(); g_cursor.sens = params.mouseSens; if (g_cursor.sens < -9) g_cursor.sens = -9; else if (g_cursor.sens > 9) g_cursor.sens = 9; if (getenv("WAYLAND_DISPLAY")) { DEBUG_INFO("Wayland detected"); if (getenv("SDL_VIDEODRIVER") == NULL) { int err = setenv("SDL_VIDEODRIVER", "wayland", 1); if (err < 0) { DEBUG_ERROR("Unable to set the env variable SDL_VIDEODRIVER: %d", err); return -1; } DEBUG_INFO("SDL_VIDEODRIVER has been set to wayland"); } } if (!params.noScreensaver) SDL_SetHint(SDL_HINT_VIDEO_ALLOW_SCREENSAVER, "1"); if (SDL_Init(SDL_INIT_VIDEO) < 0) { DEBUG_ERROR("SDL_Init Failed"); return -1; } // override SDL's SIGINIT handler so that we can tell the difference between // SIGINT and the user sending a close event, such as ALT+F4 signal(SIGINT , int_handler); signal(SIGTERM, int_handler); // try map the shared memory if (!ivshmemOpen(&g_state.shm)) { DEBUG_ERROR("Failed to map memory"); return -1; } // try to connect to the spice server if (params.useSpiceInput || params.useSpiceClipboard) { spice_set_clipboard_cb( spiceClipboardNotice, spiceClipboardData, spiceClipboardRelease, spiceClipboardRequest); if (!spice_connect(params.spiceHost, params.spicePort, "")) { DEBUG_ERROR("Failed to connect to spice server"); return -1; } while(g_state.state != APP_STATE_SHUTDOWN && !spice_ready()) if (!spice_process(1000)) { g_state.state = APP_STATE_SHUTDOWN; DEBUG_ERROR("Failed to process spice messages"); return -1; } spice_mouse_mode(true); if (!lgCreateThread("spiceThread", spiceThread, NULL, &t_spice)) { DEBUG_ERROR("spice create thread failed"); return -1; } } // select and init a renderer LG_RendererParams lgrParams; lgrParams.showFPS = params.showFPS; lgrParams.quickSplash = params.quickSplash; Uint32 sdlFlags; if (params.forceRenderer) { DEBUG_INFO("Trying forced renderer"); sdlFlags = 0; if (!try_renderer(params.forceRendererIndex, lgrParams, &sdlFlags)) { DEBUG_ERROR("Forced renderer failed to iniailize"); return -1; } g_state.lgr = LG_Renderers[params.forceRendererIndex]; } else { // probe for a a suitable renderer for(unsigned int i = 0; i < LG_RENDERER_COUNT; ++i) { sdlFlags = 0; if (try_renderer(i, lgrParams, &sdlFlags)) { g_state.lgr = LG_Renderers[i]; break; } } } if (!g_state.lgr) { DEBUG_INFO("Unable to find a suitable renderer"); return -1; } // all our ducks are in a line, create the window g_state.window = SDL_CreateWindow( params.windowTitle, params.center ? SDL_WINDOWPOS_CENTERED : params.x, params.center ? SDL_WINDOWPOS_CENTERED : params.y, params.w, params.h, ( SDL_WINDOW_SHOWN | (params.allowResize ? SDL_WINDOW_RESIZABLE : 0) | (params.borderless ? SDL_WINDOW_BORDERLESS : 0) | (params.maximize ? SDL_WINDOW_MAXIMIZED : 0) | sdlFlags ) ); if (g_state.window == NULL) { DEBUG_ERROR("Could not create an SDL window: %s\n", SDL_GetError()); return 1; } SDL_SetHint(SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS, params.minimizeOnFocusLoss ? "1" : "0"); if (params.fullscreen) SDL_SetWindowFullscreen(g_state.window, SDL_WINDOW_FULLSCREEN_DESKTOP); if (!params.center) SDL_SetWindowPosition(g_state.window, params.x, params.y); // ensure the initial window size is stored in the state SDL_GetWindowSize(g_state.window, &g_state.windowW, &g_state.windowH); // ensure renderer viewport is aware of the current window size updatePositionInfo(); if (params.fpsMin <= 0) { // default 30 fps g_state.frameTime = 1000000000ULL / 30ULL; } else { DEBUG_INFO("Using the FPS minimum from args: %d", params.fpsMin); g_state.frameTime = 1000000000ULL / (unsigned long long)params.fpsMin; } // create our custom event e_SDLEvent = SDL_RegisterEvents(1); register_key_binds(); // set the compositor hint to bypass for low latency SDL_VERSION(&g_state.wminfo.version); if (SDL_GetWindowWMInfo(g_state.window, &g_state.wminfo)) { if (g_state.wminfo.subsystem == SDL_SYSWM_X11) { int event, error; // enable X11 events to work around SDL2 bugs SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE); XQueryExtension(g_state.wminfo.info.x11.display, "XInputExtension", &g_XInputOp, &event, &error); Atom NETWM_BYPASS_COMPOSITOR = XInternAtom( g_state.wminfo.info.x11.display, "NETWM_BYPASS_COMPOSITOR", False); unsigned long value = 1; XChangeProperty( g_state.wminfo.info.x11.display, g_state.wminfo.info.x11.window, NETWM_BYPASS_COMPOSITOR, XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&value, 1 ); g_state.lgc = LG_Clipboards[0]; } } else { DEBUG_ERROR("Could not get SDL window information %s", SDL_GetError()); return -1; } if (g_state.lgc) { DEBUG_INFO("Using Clipboard: %s", g_state.lgc->getName()); if (!g_state.lgc->init(&g_state.wminfo, clipboardRelease, clipboardNotify, clipboardData)) { DEBUG_WARN("Failed to initialize the clipboard interface, continuing anyway"); g_state.lgc = NULL; } g_state.cbRequestList = ll_new(); } initSDLCursor(); if (params.hideMouse) SDL_ShowCursor(SDL_DISABLE); // setup the startup condition if (!(e_startup = lgCreateEvent(false, 0))) { DEBUG_ERROR("failed to create the startup event"); return -1; } // setup the new frame event if (!(e_frame = lgCreateEvent(true, 0))) { DEBUG_ERROR("failed to create the frame event"); return -1; } // start the renderThread so we don't just display junk if (!lgCreateThread("renderThread", renderThread, NULL, &t_render)) { DEBUG_ERROR("render create thread failed"); return -1; } // ensure mouse acceleration is identical in server mode SDL_SetHintWithPriority(SDL_HINT_MOUSE_RELATIVE_MODE_WARP, "1", SDL_HINT_OVERRIDE); SDL_SetEventFilter(eventFilter, NULL); // wait for startup to complete so that any error messages below are output at // the end of the output lgWaitEvent(e_startup, TIMEOUT_INFINITE); wmInit(); LGMP_STATUS status; while(g_state.state == APP_STATE_RUNNING) { if ((status = lgmpClientInit(g_state.shm.mem, g_state.shm.size, &g_state.lgmp)) == LGMP_OK) break; DEBUG_ERROR("lgmpClientInit Failed: %s", lgmpStatusString(status)); return -1; } /* this short timeout is to allow the LGMP host to update the timestamp before * we start checking for a valid session */ SDL_WaitEventTimeout(NULL, 200); if (params.captureOnStart) setGrab(true); uint32_t udataSize; KVMFR *udata; int waitCount = 0; restart: while(g_state.state == APP_STATE_RUNNING) { if ((status = lgmpClientSessionInit(g_state.lgmp, &udataSize, (uint8_t **)&udata)) == LGMP_OK) break; if (status != LGMP_ERR_INVALID_SESSION && status != LGMP_ERR_INVALID_MAGIC) { DEBUG_ERROR("lgmpClientSessionInit Failed: %s", lgmpStatusString(status)); return -1; } if (waitCount++ == 0) { DEBUG_BREAK(); DEBUG_INFO("The host application seems to not be running"); DEBUG_INFO("Waiting for the host application to start..."); } if (waitCount == 30) { DEBUG_BREAK(); DEBUG_INFO("Please check the host application is running and is the correct version"); DEBUG_INFO("Check the host log in your guest at %%TEMP%%\\looking-glass-host.txt"); DEBUG_INFO("Continuing to wait..."); } SDL_WaitEventTimeout(NULL, 1000); } if (g_state.state != APP_STATE_RUNNING) return -1; // dont show warnings again after the first startup waitCount = 100; const bool magicMatches = memcmp(udata->magic, KVMFR_MAGIC, sizeof(udata->magic)) == 0; if (udataSize != sizeof(KVMFR) || !magicMatches || udata->version != KVMFR_VERSION) { DEBUG_BREAK(); DEBUG_ERROR("The host application is not compatible with this client"); DEBUG_ERROR("This is not a Looking Glass error, do not report this"); DEBUG_ERROR("Please install the matching host application for this client"); if (magicMatches) { DEBUG_ERROR("Expected KVMFR version %d, got %d", KVMFR_VERSION, udata->version); DEBUG_ERROR("Client version: %s", BUILD_VERSION); if (udata->version >= 2) DEBUG_ERROR(" Host version: %s", udata->hostver); } else DEBUG_ERROR("Invalid KVMFR magic"); DEBUG_BREAK(); if (magicMatches) { DEBUG_INFO("Waiting for you to upgrade the host application"); while (g_state.state == APP_STATE_RUNNING && udata->version != KVMFR_VERSION) SDL_WaitEventTimeout(NULL, 1000); if (g_state.state != APP_STATE_RUNNING) return -1; goto restart; } else return -1; } DEBUG_INFO("Host ready, reported version: %s", udata->hostver); DEBUG_INFO("Starting session"); if (!lgCreateThread("cursorThread", cursorThread, NULL, &t_cursor)) { DEBUG_ERROR("cursor create thread failed"); return 1; } if (!lgCreateThread("frameThread", frameThread, NULL, &t_frame)) { DEBUG_ERROR("frame create thread failed"); return -1; } while(g_state.state == APP_STATE_RUNNING) { if (!lgmpClientSessionValid(g_state.lgmp)) { g_state.state = APP_STATE_RESTART; break; } SDL_WaitEventTimeout(NULL, 100); } if (g_state.state == APP_STATE_RESTART) { lgSignalEvent(e_startup); lgSignalEvent(e_frame); lgJoinThread(t_frame , NULL); lgJoinThread(t_cursor, NULL); t_frame = NULL; t_cursor = NULL; lgInit(); g_state.lgr->on_restart(g_state.lgrData); DEBUG_INFO("Waiting for the host to restart..."); goto restart; } return 0; } static void lg_shutdown() { g_state.state = APP_STATE_SHUTDOWN; if (t_render) { lgSignalEvent(e_startup); lgSignalEvent(e_frame); lgJoinThread(t_render, NULL); } lgmpClientFree(&g_state.lgmp); if (e_frame) { lgFreeEvent(e_frame); e_frame = NULL; } if (e_startup) { lgFreeEvent(e_startup); e_startup = NULL; } // if spice is still connected send key up events for any pressed keys if (params.useSpiceInput && spice_ready()) { for(int i = 0; i < SDL_NUM_SCANCODES; ++i) if (g_state.keyDown[i]) { uint32_t scancode = mapScancode(i); if (scancode == 0) continue; g_state.keyDown[i] = false; spice_key_up(scancode); } spice_disconnect(); if (t_spice) lgJoinThread(t_spice, NULL); } if (g_state.lgc) { g_state.lgc->free(); struct CBRequest *cbr; while(ll_shift(g_state.cbRequestList, (void **)&cbr)) free(cbr); ll_free(g_state.cbRequestList); } if (g_state.window) { wmFree(); SDL_DestroyWindow(g_state.window); } if (cursor) SDL_FreeCursor(cursor); ivshmemClose(&g_state.shm); release_key_binds(); SDL_Quit(); } int main(int argc, char * argv[]) { if (getuid() == 0) { DEBUG_ERROR("Do not run looking glass as root!"); return -1; } DEBUG_INFO("Looking Glass (%s)", BUILD_VERSION); DEBUG_INFO("Locking Method: " LG_LOCK_MODE); if (!installCrashHandler("/proc/self/exe")) DEBUG_WARN("Failed to install the crash handler"); config_init(); ivshmemOptionsInit(); // early renderer setup for option registration for(unsigned int i = 0; i < LG_RENDERER_COUNT; ++i) LG_Renderers[i]->setup(); if (!config_load(argc, argv)) return -1; const int ret = lg_run(); lg_shutdown(); config_free(); return ret; }