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567 lines
14 KiB
567 lines
14 KiB
/**
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* @example SDLvncviewer.c
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*/
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#include <SDL.h>
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#include <signal.h>
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#include <rfb/rfbclient.h>
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#include "scrap.h"
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struct { int sdl; int rfb; } buttonMapping[]={
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{1, rfbButton1Mask},
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{2, rfbButton2Mask},
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{3, rfbButton3Mask},
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{4, rfbButton4Mask},
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{5, rfbButton5Mask},
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{0,0}
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};
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static int enableResizable = 1, viewOnly, listenLoop, buttonMask;
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#ifdef SDL_ASYNCBLIT
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int sdlFlags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
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#else
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int sdlFlags = SDL_HWSURFACE | SDL_HWACCEL;
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#endif
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static int realWidth, realHeight, bytesPerPixel, rowStride;
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static char *sdlPixels;
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static int rightAltKeyDown, leftAltKeyDown;
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static rfbBool resize(rfbClient* client) {
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int width=client->width,height=client->height,
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depth=client->format.bitsPerPixel;
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if (enableResizable)
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sdlFlags |= SDL_RESIZABLE;
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client->updateRect.x = client->updateRect.y = 0;
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client->updateRect.w = width; client->updateRect.h = height;
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rfbBool okay=SDL_VideoModeOK(width,height,depth,sdlFlags);
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if(!okay)
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for(depth=24;!okay && depth>4;depth/=2)
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okay=SDL_VideoModeOK(width,height,depth,sdlFlags);
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if(okay) {
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SDL_Surface* sdl=SDL_SetVideoMode(width,height,depth,sdlFlags);
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rfbClientSetClientData(client, SDL_Init, sdl);
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client->width = sdl->pitch / (depth / 8);
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if (sdlPixels) {
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free(client->frameBuffer);
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sdlPixels = NULL;
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}
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client->frameBuffer=sdl->pixels;
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client->format.bitsPerPixel=depth;
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client->format.redShift=sdl->format->Rshift;
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client->format.greenShift=sdl->format->Gshift;
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client->format.blueShift=sdl->format->Bshift;
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client->format.redMax=sdl->format->Rmask>>client->format.redShift;
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client->format.greenMax=sdl->format->Gmask>>client->format.greenShift;
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client->format.blueMax=sdl->format->Bmask>>client->format.blueShift;
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SetFormatAndEncodings(client);
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} else {
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SDL_Surface* sdl=rfbClientGetClientData(client, SDL_Init);
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rfbClientLog("Could not set resolution %dx%d!\n",
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client->width,client->height);
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if(sdl) {
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client->width=sdl->pitch / (depth / 8);
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client->height=sdl->h;
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} else {
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client->width=0;
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client->height=0;
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}
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return FALSE;
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}
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SDL_WM_SetCaption(client->desktopName, "SDL");
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return TRUE;
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}
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static rfbKeySym SDL_key2rfbKeySym(SDL_KeyboardEvent* e) {
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rfbKeySym k = 0;
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SDLKey sym = e->keysym.sym;
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switch (sym) {
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case SDLK_BACKSPACE: k = XK_BackSpace; break;
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case SDLK_TAB: k = XK_Tab; break;
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case SDLK_CLEAR: k = XK_Clear; break;
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case SDLK_RETURN: k = XK_Return; break;
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case SDLK_PAUSE: k = XK_Pause; break;
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case SDLK_ESCAPE: k = XK_Escape; break;
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case SDLK_SPACE: k = XK_space; break;
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case SDLK_DELETE: k = XK_Delete; break;
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case SDLK_KP0: k = XK_KP_0; break;
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case SDLK_KP1: k = XK_KP_1; break;
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case SDLK_KP2: k = XK_KP_2; break;
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case SDLK_KP3: k = XK_KP_3; break;
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case SDLK_KP4: k = XK_KP_4; break;
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case SDLK_KP5: k = XK_KP_5; break;
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case SDLK_KP6: k = XK_KP_6; break;
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case SDLK_KP7: k = XK_KP_7; break;
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case SDLK_KP8: k = XK_KP_8; break;
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case SDLK_KP9: k = XK_KP_9; break;
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case SDLK_KP_PERIOD: k = XK_KP_Decimal; break;
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case SDLK_KP_DIVIDE: k = XK_KP_Divide; break;
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case SDLK_KP_MULTIPLY: k = XK_KP_Multiply; break;
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case SDLK_KP_MINUS: k = XK_KP_Subtract; break;
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case SDLK_KP_PLUS: k = XK_KP_Add; break;
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case SDLK_KP_ENTER: k = XK_KP_Enter; break;
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case SDLK_KP_EQUALS: k = XK_KP_Equal; break;
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case SDLK_UP: k = XK_Up; break;
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case SDLK_DOWN: k = XK_Down; break;
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case SDLK_RIGHT: k = XK_Right; break;
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case SDLK_LEFT: k = XK_Left; break;
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case SDLK_INSERT: k = XK_Insert; break;
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case SDLK_HOME: k = XK_Home; break;
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case SDLK_END: k = XK_End; break;
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case SDLK_PAGEUP: k = XK_Page_Up; break;
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case SDLK_PAGEDOWN: k = XK_Page_Down; break;
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case SDLK_F1: k = XK_F1; break;
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case SDLK_F2: k = XK_F2; break;
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case SDLK_F3: k = XK_F3; break;
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case SDLK_F4: k = XK_F4; break;
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case SDLK_F5: k = XK_F5; break;
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case SDLK_F6: k = XK_F6; break;
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case SDLK_F7: k = XK_F7; break;
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case SDLK_F8: k = XK_F8; break;
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case SDLK_F9: k = XK_F9; break;
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case SDLK_F10: k = XK_F10; break;
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case SDLK_F11: k = XK_F11; break;
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case SDLK_F12: k = XK_F12; break;
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case SDLK_F13: k = XK_F13; break;
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case SDLK_F14: k = XK_F14; break;
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case SDLK_F15: k = XK_F15; break;
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case SDLK_NUMLOCK: k = XK_Num_Lock; break;
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case SDLK_CAPSLOCK: k = XK_Caps_Lock; break;
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case SDLK_SCROLLOCK: k = XK_Scroll_Lock; break;
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case SDLK_RSHIFT: k = XK_Shift_R; break;
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case SDLK_LSHIFT: k = XK_Shift_L; break;
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case SDLK_RCTRL: k = XK_Control_R; break;
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case SDLK_LCTRL: k = XK_Control_L; break;
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case SDLK_RALT: k = XK_Alt_R; break;
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case SDLK_LALT: k = XK_Alt_L; break;
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case SDLK_RMETA: k = XK_Meta_R; break;
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case SDLK_LMETA: k = XK_Meta_L; break;
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case SDLK_LSUPER: k = XK_Super_L; break;
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case SDLK_RSUPER: k = XK_Super_R; break;
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#if 0
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case SDLK_COMPOSE: k = XK_Compose; break;
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#endif
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case SDLK_MODE: k = XK_Mode_switch; break;
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case SDLK_HELP: k = XK_Help; break;
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case SDLK_PRINT: k = XK_Print; break;
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case SDLK_SYSREQ: k = XK_Sys_Req; break;
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case SDLK_BREAK: k = XK_Break; break;
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default: break;
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}
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/* both SDL and X11 keysyms match ASCII in the range 0x01-0x7f */
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if (k == 0 && sym > 0x0 && sym < 0x100) {
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k = sym;
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if (e->keysym.mod & (KMOD_LSHIFT | KMOD_RSHIFT)) {
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if (k >= '1' && k <= '9')
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k &= ~0x10;
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else if (k >= 'a' && k <= 'f')
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k &= ~0x20;
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}
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}
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if (k == 0) {
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if (e->keysym.unicode < 0x100)
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k = e->keysym.unicode;
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else
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rfbClientLog("Unknown keysym: %d\n", sym);
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}
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return k;
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}
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static uint32_t get(rfbClient *cl, int x, int y)
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{
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switch (bytesPerPixel) {
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case 1: return ((uint8_t *)cl->frameBuffer)[x + y * cl->width];
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case 2: return ((uint16_t *)cl->frameBuffer)[x + y * cl->width];
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case 4: return ((uint32_t *)cl->frameBuffer)[x + y * cl->width];
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default:
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rfbClientErr("Unknown bytes/pixel: %d", bytesPerPixel);
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exit(1);
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}
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}
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static void put(int x, int y, uint32_t v)
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{
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switch (bytesPerPixel) {
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case 1: ((uint8_t *)sdlPixels)[x + y * rowStride] = v; break;
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case 2: ((uint16_t *)sdlPixels)[x + y * rowStride] = v; break;
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case 4: ((uint32_t *)sdlPixels)[x + y * rowStride] = v; break;
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default:
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rfbClientErr("Unknown bytes/pixel: %d", bytesPerPixel);
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exit(1);
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}
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}
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static void resizeRectangleToReal(rfbClient *cl, int x, int y, int w, int h)
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{
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int i0 = x * realWidth / cl->width;
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int i1 = ((x + w) * realWidth - 1) / cl->width + 1;
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int j0 = y * realHeight / cl->height;
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int j1 = ((y + h) * realHeight - 1) / cl->height + 1;
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int i, j;
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for (j = j0; j < j1; j++)
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for (i = i0; i < i1; i++) {
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int x0 = i * cl->width / realWidth;
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int x1 = ((i + 1) * cl->width - 1) / realWidth + 1;
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int y0 = j * cl->height / realHeight;
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int y1 = ((j + 1) * cl->height - 1) / realHeight + 1;
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uint32_t r = 0, g = 0, b = 0;
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for (y = y0; y < y1; y++)
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for (x = x0; x < x1; x++) {
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uint32_t v = get(cl, x, y);
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#define REDSHIFT cl->format.redShift
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#define REDMAX cl->format.redMax
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#define GREENSHIFT cl->format.greenShift
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#define GREENMAX cl->format.greenMax
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#define BLUESHIFT cl->format.blueShift
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#define BLUEMAX cl->format.blueMax
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r += (v >> REDSHIFT) & REDMAX;
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g += (v >> GREENSHIFT) & GREENMAX;
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b += (v >> BLUESHIFT) & BLUEMAX;
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}
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r /= (x1 - x0) * (y1 - y0);
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g /= (x1 - x0) * (y1 - y0);
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b /= (x1 - x0) * (y1 - y0);
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put(i, j, (r << REDSHIFT) | (g << GREENSHIFT) |
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(b << BLUESHIFT));
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}
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}
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static void update(rfbClient* cl,int x,int y,int w,int h) {
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if (sdlPixels) {
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resizeRectangleToReal(cl, x, y, w, h);
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w = ((x + w) * realWidth - 1) / cl->width + 1;
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h = ((y + h) * realHeight - 1) / cl->height + 1;
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x = x * realWidth / cl->width;
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y = y * realHeight / cl->height;
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w -= x;
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h -= y;
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}
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SDL_UpdateRect(rfbClientGetClientData(cl, SDL_Init), x, y, w, h);
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}
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static void setRealDimension(rfbClient *client, int w, int h)
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{
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SDL_Surface* sdl;
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if (w < 0) {
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const SDL_VideoInfo *info = SDL_GetVideoInfo();
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w = info->current_h;
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h = info->current_w;
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}
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if (w == realWidth && h == realHeight)
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return;
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if (!sdlPixels) {
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int size;
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sdlPixels = (char *)client->frameBuffer;
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rowStride = client->width;
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bytesPerPixel = client->format.bitsPerPixel / 8;
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size = client->width * bytesPerPixel * client->height;
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client->frameBuffer = malloc(size);
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if (!client->frameBuffer) {
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rfbClientErr("Could not allocate %d bytes", size);
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exit(1);
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}
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memcpy(client->frameBuffer, sdlPixels, size);
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}
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sdl = rfbClientGetClientData(client, SDL_Init);
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if (sdl->w != w || sdl->h != h) {
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int depth = sdl->format->BitsPerPixel;
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sdl = SDL_SetVideoMode(w, h, depth, sdlFlags);
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rfbClientSetClientData(client, SDL_Init, sdl);
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sdlPixels = sdl->pixels;
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rowStride = sdl->pitch / (depth / 8);
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}
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realWidth = w;
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realHeight = h;
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update(client, 0, 0, client->width, client->height);
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}
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static void kbd_leds(rfbClient* cl, int value, int pad) {
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/* note: pad is for future expansion 0=unused */
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fprintf(stderr,"Led State= 0x%02X\n", value);
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fflush(stderr);
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}
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/* trivial support for textchat */
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static void text_chat(rfbClient* cl, int value, char *text) {
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switch(value) {
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case rfbTextChatOpen:
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fprintf(stderr,"TextChat: We should open a textchat window!\n");
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TextChatOpen(cl);
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break;
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case rfbTextChatClose:
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fprintf(stderr,"TextChat: We should close our window!\n");
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break;
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case rfbTextChatFinished:
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fprintf(stderr,"TextChat: We should close our window!\n");
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break;
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default:
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fprintf(stderr,"TextChat: Received \"%s\"\n", text);
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break;
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}
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fflush(stderr);
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}
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#ifdef __MINGW32__
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#define LOG_TO_FILE
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#endif
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#ifdef LOG_TO_FILE
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#include <stdarg.h>
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static void
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log_to_file(const char *format, ...)
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{
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FILE* logfile;
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static char* logfile_str=0;
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va_list args;
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char buf[256];
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time_t log_clock;
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if(!rfbEnableClientLogging)
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return;
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if(logfile_str==0) {
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logfile_str=getenv("VNCLOG");
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if(logfile_str==0)
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logfile_str="vnc.log";
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}
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logfile=fopen(logfile_str,"a");
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va_start(args, format);
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time(&log_clock);
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strftime(buf, 255, "%d/%m/%Y %X ", localtime(&log_clock));
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fprintf(logfile,buf);
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vfprintf(logfile, format, args);
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fflush(logfile);
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va_end(args);
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fclose(logfile);
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}
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#endif
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static void cleanup(rfbClient* cl)
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{
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/*
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just in case we're running in listenLoop:
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close viewer window by restarting SDL video subsystem
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*/
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SDL_QuitSubSystem(SDL_INIT_VIDEO);
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SDL_InitSubSystem(SDL_INIT_VIDEO);
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if(cl)
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rfbClientCleanup(cl);
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}
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static rfbBool handleSDLEvent(rfbClient *cl, SDL_Event *e)
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{
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switch(e->type) {
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#if SDL_MAJOR_VERSION > 1 || SDL_MINOR_VERSION >= 2
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case SDL_VIDEOEXPOSE:
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SendFramebufferUpdateRequest(cl, 0, 0,
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cl->width, cl->height, FALSE);
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break;
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#endif
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case SDL_MOUSEBUTTONUP:
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case SDL_MOUSEBUTTONDOWN:
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case SDL_MOUSEMOTION:
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{
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int x, y, state, i;
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if (viewOnly)
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break;
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if (e->type == SDL_MOUSEMOTION) {
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x = e->motion.x;
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y = e->motion.y;
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state = e->motion.state;
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}
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else {
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x = e->button.x;
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y = e->button.y;
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state = e->button.button;
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for (i = 0; buttonMapping[i].sdl; i++)
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if (state == buttonMapping[i].sdl) {
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state = buttonMapping[i].rfb;
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if (e->type == SDL_MOUSEBUTTONDOWN)
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buttonMask |= state;
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else
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buttonMask &= ~state;
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break;
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}
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}
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if (sdlPixels) {
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x = x * cl->width / realWidth;
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y = y * cl->height / realHeight;
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}
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SendPointerEvent(cl, x, y, buttonMask);
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buttonMask &= ~(rfbButton4Mask | rfbButton5Mask);
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break;
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}
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case SDL_KEYUP:
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case SDL_KEYDOWN:
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if (viewOnly)
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break;
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SendKeyEvent(cl, SDL_key2rfbKeySym(&e->key),
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e->type == SDL_KEYDOWN ? TRUE : FALSE);
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if (e->key.keysym.sym == SDLK_RALT)
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rightAltKeyDown = e->type == SDL_KEYDOWN;
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if (e->key.keysym.sym == SDLK_LALT)
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leftAltKeyDown = e->type == SDL_KEYDOWN;
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break;
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case SDL_QUIT:
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if(listenLoop)
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{
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cleanup(cl);
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return FALSE;
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}
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else
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{
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rfbClientCleanup(cl);
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exit(0);
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}
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case SDL_ACTIVEEVENT:
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if (!e->active.gain && rightAltKeyDown) {
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SendKeyEvent(cl, XK_Alt_R, FALSE);
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rightAltKeyDown = FALSE;
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rfbClientLog("released right Alt key\n");
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}
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if (!e->active.gain && leftAltKeyDown) {
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SendKeyEvent(cl, XK_Alt_L, FALSE);
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leftAltKeyDown = FALSE;
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rfbClientLog("released left Alt key\n");
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}
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if (e->active.gain && lost_scrap()) {
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static char *data = NULL;
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static int len = 0;
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get_scrap(T('T', 'E', 'X', 'T'), &len, &data);
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if (len)
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SendClientCutText(cl, data, len);
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}
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break;
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case SDL_SYSWMEVENT:
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clipboard_filter(e);
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break;
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case SDL_VIDEORESIZE:
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setRealDimension(cl, e->resize.w, e->resize.h);
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break;
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default:
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rfbClientLog("ignore SDL event: 0x%x\n", e->type);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void got_selection(rfbClient *cl, const char *text, int len)
|
|
{
|
|
put_scrap(T('T', 'E', 'X', 'T'), len, text);
|
|
}
|
|
|
|
|
|
#ifdef mac
|
|
#define main SDLmain
|
|
#endif
|
|
|
|
int main(int argc,char** argv) {
|
|
rfbClient* cl;
|
|
int i, j;
|
|
SDL_Event e;
|
|
|
|
#ifdef LOG_TO_FILE
|
|
rfbClientLog=rfbClientErr=log_to_file;
|
|
#endif
|
|
|
|
for (i = 1, j = 1; i < argc; i++)
|
|
if (!strcmp(argv[i], "-viewonly"))
|
|
viewOnly = 1;
|
|
else if (!strcmp(argv[i], "-resizable"))
|
|
enableResizable = 1;
|
|
else if (!strcmp(argv[i], "-no-resizable"))
|
|
enableResizable = 0;
|
|
else if (!strcmp(argv[i], "-listen")) {
|
|
listenLoop = 1;
|
|
argv[i] = "-listennofork";
|
|
++j;
|
|
}
|
|
else {
|
|
if (i != j)
|
|
argv[j] = argv[i];
|
|
j++;
|
|
}
|
|
argc = j;
|
|
|
|
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE);
|
|
SDL_EnableUNICODE(1);
|
|
SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY,
|
|
SDL_DEFAULT_REPEAT_INTERVAL);
|
|
atexit(SDL_Quit);
|
|
signal(SIGINT, exit);
|
|
|
|
do {
|
|
/* 16-bit: cl=rfbGetClient(5,3,2); */
|
|
cl=rfbGetClient(8,3,4);
|
|
cl->MallocFrameBuffer=resize;
|
|
cl->canHandleNewFBSize = TRUE;
|
|
cl->GotFrameBufferUpdate=update;
|
|
cl->HandleKeyboardLedState=kbd_leds;
|
|
cl->HandleTextChat=text_chat;
|
|
cl->GotXCutText = got_selection;
|
|
cl->listenPort = LISTEN_PORT_OFFSET;
|
|
cl->listen6Port = LISTEN_PORT_OFFSET;
|
|
if(!rfbInitClient(cl,&argc,argv))
|
|
{
|
|
cl = NULL; /* rfbInitClient has already freed the client struct */
|
|
cleanup(cl);
|
|
break;
|
|
}
|
|
|
|
init_scrap();
|
|
|
|
while(1) {
|
|
if(SDL_PollEvent(&e)) {
|
|
/*
|
|
handleSDLEvent() return 0 if user requested window close.
|
|
In this case, handleSDLEvent() will have called cleanup().
|
|
*/
|
|
if(!handleSDLEvent(cl, &e))
|
|
break;
|
|
}
|
|
else {
|
|
i=WaitForMessage(cl,500);
|
|
if(i<0)
|
|
{
|
|
cleanup(cl);
|
|
break;
|
|
}
|
|
if(i)
|
|
if(!HandleRFBServerMessage(cl))
|
|
{
|
|
cleanup(cl);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
while(listenLoop);
|
|
|
|
return 0;
|
|
}
|
|
|