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#define BACKEND_NAME "wininput"
#define DEBUG
#include <string.h>
#include "wininput.h"
static key_info keys[] = {
{VK_LBUTTON, "lmb", button}, {VK_RBUTTON, "rmb", button}, {VK_MBUTTON, "mmb", button},
{VK_XBUTTON1, "xmb1", button}, {VK_XBUTTON2, "xmb2", button},
{VK_BACK, "backspace"},
{VK_TAB, "tab"},
{VK_CLEAR, "clear"},
{VK_RETURN, "enter"},
{VK_SHIFT, "shift"},
{VK_CONTROL, "control"}, {VK_MENU, "alt"},
{VK_CAPITAL, "capslock"},
{VK_ESCAPE, "escape"},
{VK_SPACE, "space"},
{VK_PRIOR, "pageup"}, {VK_NEXT, "pagedown"},
{VK_END, "end"}, {VK_HOME, "home"},
{VK_PAUSE, "pause"}, {VK_NUMLOCK, "numlock"}, {VK_SCROLL, "scrolllock"},
{VK_INSERT, "insert"}, {VK_DELETE, "delete"}, {VK_SNAPSHOT, "printscreen"},
{VK_LEFT, "left"}, {VK_UP, "up"}, {VK_RIGHT, "right"}, {VK_DOWN, "down"},
{VK_SELECT, "select"},
{VK_PRINT, "print"},
{VK_EXECUTE, "execute"},
{VK_HELP, "help"},
{VK_APPS, "apps"},
{VK_SLEEP, "sleep"},
{VK_NUMPAD0, "num0"}, {VK_NUMPAD1, "num1"}, {VK_NUMPAD2, "num2"}, {VK_NUMPAD3, "num3"},
{VK_NUMPAD4, "num4"}, {VK_NUMPAD5, "num5"}, {VK_NUMPAD6, "num6"}, {VK_NUMPAD7, "num7"},
{VK_NUMPAD8, "num8"}, {VK_NUMPAD9, "num9"}, {VK_MULTIPLY, "multiply"}, {VK_ADD, "plus"},
{VK_SEPARATOR, "comma"}, {VK_SUBTRACT, "minus"}, {VK_DECIMAL, "dot"}, {VK_DIVIDE, "divide"},
{VK_F1, "f1"}, {VK_F2, "f2"}, {VK_F3, "f3"}, {VK_F4, "f4"}, {VK_F5, "f5"},
{VK_F6, "f6"}, {VK_F7, "f7"}, {VK_F8, "f8"}, {VK_F9, "f9"}, {VK_F10, "f10"},
{VK_F11, "f11"}, {VK_F12, "f12"}, {VK_F13, "f13"}, {VK_F14, "f14"}, {VK_F15, "f15"},
{VK_F16, "f16"}, {VK_F17, "f17"}, {VK_F18, "f18"}, {VK_F19, "f19"}, {VK_F20, "f20"},
{VK_F21, "f21"}, {VK_F22, "f22"}, {VK_F23, "f23"}, {VK_F24, "f24"},
{VK_LWIN, "lwin"}, {VK_RWIN, "rwin"},
{VK_LSHIFT, "lshift"}, {VK_RSHIFT, "rshift"},
{VK_LCONTROL, "lctrl"}, {VK_RCONTROL, "rctrl"},
{VK_LMENU, "lmenu"}, {VK_RMENU, "rmenu"},
{VK_BROWSER_BACK, "previous"}, {VK_BROWSER_FORWARD, "next"}, {VK_BROWSER_REFRESH, "refresh"},
{VK_BROWSER_STOP, "stop"}, {VK_BROWSER_SEARCH, "search"}, {VK_BROWSER_FAVORITES, "favorites"},
{VK_BROWSER_HOME, "homepage"},
{VK_VOLUME_MUTE, "mute"}, {VK_VOLUME_DOWN, "voldown"}, {VK_VOLUME_UP, "volup"},
{VK_MEDIA_NEXT_TRACK, "nexttrack"}, {VK_MEDIA_PREV_TRACK, "prevtrack"},
{VK_MEDIA_STOP, "stopmedia"}, {VK_MEDIA_PLAY_PAUSE, "togglemedia"},
{VK_LAUNCH_MEDIA_SELECT, "mediaselect"},
{VK_LAUNCH_MAIL, "mail"}, {VK_LAUNCH_APP1, "app1"}, {VK_LAUNCH_APP2, "app2"},
{VK_OEM_PLUS, "plus"}, {VK_OEM_COMMA, "comma"},
{VK_OEM_MINUS, "minus"}, {VK_OEM_PERIOD, "period"},
{VK_ZOOM, "zoom"}
};
MM_PLUGIN_API int init(){
backend wininput = {
.name = BACKEND_NAME,
.conf = wininput_configure,
.create = wininput_instance,
.conf_instance = wininput_configure_instance,
.channel = wininput_channel,
.handle = wininput_set,
.process = wininput_handle,
.start = wininput_start,
.shutdown = wininput_shutdown
};
if(sizeof(wininput_channel_ident) != sizeof(uint64_t)){
LOG("Channel identification union out of bounds");
return 1;
}
//register backend
if(mm_backend_register(wininput)){
LOG("Failed to register backend");
return 1;
}
return 0;
}
static int wininput_configure(char* option, char* value){
LOG("The backend does not take any global configuration");
return 1;
}
static int wininput_configure_instance(instance* inst, char* option, char* value){
LOG("The backend does not take any instance configuration");
return 0;
}
static int wininput_instance(instance* inst){
wininput_instance_data* data = calloc(1, sizeof(wininput_instance_data));
if(!data){
LOG("Failed to allocate memory");
return 1;
}
inst->impl = data;
return 0;
}
static channel* wininput_channel(instance* inst, char* spec, uint8_t flags){
size_t u;
uint16_t scancode = 0;
char* token = spec;
wininput_channel_ident ident = {
.label = 0
};
if(!strncmp(spec, "mouse.", 6)){
//TODO wheel
token += 6;
ident.fields.type = mouse;
if(!strcmp(token, "x")){
ident.fields.channel = position;
}
else if(!strcmp(token, "y")){
ident.fields.channel = position;
ident.fields.control = 1;
}
else{
//check the buttons
for(u = 0; u < sizeof(keys) / sizeof(keys[0]); u++){
if(keys[u].channel == button && !strcmp(keys[u].name, token)){
DBGPF("Using keymap %" PRIsize_t " (%d) for spec %s", u, keys[u].keycode, token);
ident.fields.channel = button;
ident.fields.control = keys[u].keycode;
break;
}
}
}
}
else if(!strncmp(spec, "key.", 4)){
token += 4;
ident.fields.type = keyboard;
ident.fields.channel = keypress;
for(u = 0; u < sizeof(keys) / sizeof(keys[0]); u++){
if(keys[u].channel == keypress && !strcmp(keys[u].name, token)){
DBGPF("Using keymap %" PRIsize_t " (%d) for spec %s", u, keys[u].keycode, token);
ident.fields.control = keys[u].keycode;
break;
}
}
//no entry in translation table
if(u == sizeof(keys) / sizeof(keys[0])){
if(strlen(token) == 1){
//try to translate
scancode = VkKeyScan(token[0]);
if(scancode != 0x7f7f){
DBGPF("Using keyscan result %02X (via %04X) for spec %s", scancode & 0xFF, scancode, token);
ident.fields.type = keyboard;
ident.fields.channel = keypress;
ident.fields.control = scancode & 0xFF;
}
else{
LOGPF("Invalid channel specification %s", token);
return NULL;
}
}
else if(strlen(token) > 1){
//try to use as literal
scancode = strtoul(token, NULL, 0);
if(!scancode){
LOGPF("Invalid channel specification %s", token);
return NULL;
}
DBGPF("Using direct conversion %d for spec %s", scancode & 0xFF, token);
ident.fields.control = scancode & 0xFF;
}
else{
LOGPF("Invalid channel specification %s", spec);
return NULL;
}
}
}
else{
LOGPF("Unknown channel spec %s", spec);
}
if(ident.label){
return mm_channel(inst, ident.label, 1);
}
return NULL;
}
static INPUT wininput_event_mouse(wininput_instance_data* data, uint8_t channel, uint8_t control, double value){
DWORD flags_down = 0, flags_up = 0;
INPUT ev = {
.type = INPUT_MOUSE
};
if(channel == position){
if(control){
data->mouse.y = value * 0xFFFF;
}
else{
data->mouse.x = value * 0xFFFF;
}
ev.mi.dwFlags |= MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE;
ev.mi.dx = data->mouse.x;
ev.mi.dy = data->mouse.y;
}
if(channel == button){
switch(control){
case VK_LBUTTON:
flags_up |= MOUSEEVENTF_LEFTUP;
flags_down |= MOUSEEVENTF_LEFTDOWN;
break;
case VK_RBUTTON:
flags_up |= MOUSEEVENTF_RIGHTUP;
flags_down |= MOUSEEVENTF_RIGHTDOWN;
break;
case VK_MBUTTON:
flags_up |= MOUSEEVENTF_MIDDLEUP;
flags_down |= MOUSEEVENTF_MIDDLEDOWN;
break;
case VK_XBUTTON1:
case VK_XBUTTON2:
ev.mi.mouseData = (control == VK_XBUTTON1) ? XBUTTON1 : XBUTTON2;
flags_up |= MOUSEEVENTF_XUP;
flags_down |= MOUSEEVENTF_XDOWN;
break;
}
if(value > 0.9){
ev.mi.dwFlags |= flags_down;
}
else{
ev.mi.dwFlags |= flags_up;
}
}
return ev;
}
static INPUT wininput_event_keyboard(wininput_instance_data* data, uint8_t channel, uint8_t control, double value){
INPUT ev = {
.type = INPUT_KEYBOARD
};
if(channel == keypress){
ev.ki.wVk = control;
if(value < 0.9){
ev.ki.dwFlags |= KEYEVENTF_KEYUP;
}
}
return ev;
}
static int wininput_set(instance* inst, size_t num, channel** c, channel_value* v){
wininput_channel_ident ident = {
.label = 0
};
wininput_instance_data* data = (wininput_instance_data*) inst->impl;
size_t n = 0, offset = 0;
INPUT events[500];
if(num > sizeof(events) / sizeof(events[0])){
LOGPF("Truncating output on %s to the last %" PRIsize_t " events, please notify the developers", inst->name, sizeof(events) / sizeof(events[0]));
offset = num - sizeof(events) / sizeof(events[0]);
}
for(n = 0; n + offset < num; n++){
ident.label = c[n + offset]->ident;
if(ident.fields.type == mouse){
events[n] = wininput_event_mouse(data, ident.fields.channel, ident.fields.control, v[n + offset].normalised);
}
else if(ident.fields.type == keyboard){
events[n] = wininput_event_keyboard(data, ident.fields.channel, ident.fields.control, v[n + offset].normalised);
}
else{
n--;
offset++;
}
}
if(n){
offset = SendInput(n, events, sizeof(INPUT));
if(offset != n){
LOGPF("Output %" PRIsize_t " of %" PRIsize_t " events on %s", offset, n, inst->name);
}
}
return 0;
}
static int wininput_handle(size_t num, managed_fd* fds){
//TODO
return 0;
}
static int wininput_start(size_t n, instance** inst){
//TODO
return 0;
}
static int wininput_shutdown(size_t n, instance** inst){
size_t u;
for(u = 0; u < n; u++){
free(inst[u]->impl);
}
LOG("Backend shut down");
return 0;
}
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