osdep/getch2-win.c

   1 /* Windows TermIO
   2  *
   3  * copyright (C) 2003 Sascha Sommer
   4  *
   5  * This file is part of MPlayer.
   6  *
   7  * MPlayer is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * MPlayer is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 // See  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/VirtualKeyCodes.asp
  23 // for additional virtual keycodes
  24
  25
  26 #include "config.h"
  27 #include <stdio.h>
  28 #include <stdint.h>
  29 #include <string.h>
  30 #include <windows.h>
  31 #include "keycodes.h"
  32 #include "input/input.h"
  33 #include "mp_fifo.h"
  34 #include "getch2.h"
  35
  36 int mp_input_slave_cmd_func(int fd,char* dest,int size){
  37   DWORD retval;
  38   HANDLE in = GetStdHandle(STD_INPUT_HANDLE);
  39   if(PeekNamedPipe(in, NULL, size, &retval, NULL, NULL)){
  40     if (size > retval) size = retval;
  41   } else {
  42     if (WaitForSingleObject(in, 0))
  43       size = 0;
  44   }
  45   if(!size){
  46           return MP_INPUT_NOTHING;
  47   }
  48   ReadFile(in, dest, size, &retval, NULL);
  49   if(retval)return retval;
  50   return MP_INPUT_NOTHING;
  51 }
  52
  53 int screen_width=80;
  54 int screen_height=24;
  55 char * erase_to_end_of_line = NULL;
  56
  57 void get_screen_size(void){
  58 }
  59
  60 static HANDLE in;
  61 static int getch2_status=0;
  62
  63 static int getch2_internal(void)
  64 {
  65         INPUT_RECORD eventbuffer[128];
  66     DWORD retval;
  67         int i=0;
  68     if(!getch2_status){
  69       // supports e.g. MinGW xterm, unfortunately keys are only received after
  70       // enter was pressed.
  71       uint8_t c;
  72       if (!PeekNamedPipe(in, NULL, 1, &retval, NULL, NULL) || !retval)
  73         return -1;
  74       ReadFile(in, &c, 1, &retval, NULL);
  75       return retval == 1 ? c : -1;
  76     }
  77     /*check if there are input events*/
  78         if(!GetNumberOfConsoleInputEvents(in,&retval))
  79         {
  80                 printf("getch2: can't get number of input events: %i\n",GetLastError());
  81                 return -1;
  82         }
  83     if(retval<=0)return -1;
  84
  85         /*read all events*/
  86         if(!ReadConsoleInput(in,eventbuffer,128,&retval))
  87         {
  88                 printf("getch: can't read input events\n");
  89                 return -1;
  90         }
  91
  92         /*filter out keyevents*/
  93     for (i = 0; i < retval; i++)
  94     {
  95                 switch(eventbuffer[i].EventType)
  96                 {
  97                         case KEY_EVENT:
  98                                 /*only a pressed key is interresting for us*/
  99                                 if(eventbuffer[i].Event.KeyEvent.bKeyDown == TRUE)
 100                                 {
 101                                         /*check for special keys*/
 102                                         switch(eventbuffer[i].Event.KeyEvent.wVirtualKeyCode)
 103                                         {
 104                                         case VK_HOME:
 105                                                 return KEY_HOME;
 106                                         case VK_END:
 107                                                 return KEY_END;
 108                                         case VK_DELETE:
 109                                                 return KEY_DEL;
 110                     case VK_INSERT:
 111                                                 return KEY_INS;
 112                                         case VK_BACK:
 113                                                 return KEY_BS;
 114                                         case VK_PRIOR:
 115                                                 return KEY_PGUP;
 116                                         case VK_NEXT:
 117                                                 return KEY_PGDWN;
 118                                         case VK_RETURN:
 119                                                 return KEY_ENTER;
 120                                         case VK_ESCAPE:
 121                                                 return KEY_ESC;
 122                                         case VK_LEFT:
 123                                                 return KEY_LEFT;
 124                                         case VK_UP:
 125                                                 return KEY_UP;
 126                                         case VK_RIGHT:
 127                                                 return KEY_RIGHT;
 128                                         case VK_DOWN:
 129                                                 return KEY_DOWN;
 130                     case VK_SHIFT:
 131                         continue;
 132                                         }
 133                                         /*check for function keys*/
 134                                 if(0x87 >= eventbuffer[i].Event.KeyEvent.wVirtualKeyCode && eventbuffer[i].Event.KeyEvent.wVirtualKeyCode >= 0x70)
 135                                                 return KEY_F + 1 + eventbuffer[i].Event.KeyEvent.wVirtualKeyCode - 0x70;
 136
 137                                         /*only characters should be remaining*/
 138                                         //printf("getch2: YOU PRESSED \"%c\" \n",eventbuffer[i].Event.KeyEvent.uChar.AsciiChar);
 139                                     return eventbuffer[i].Event.KeyEvent.uChar.AsciiChar;
 140                                 }
 141                                 break;
 142
 143                         case MOUSE_EVENT:
 144             case WINDOW_BUFFER_SIZE_EVENT:
 145             case FOCUS_EVENT:
 146             case MENU_EVENT:
 147             default:
 148                                 //printf("getch2: unsupported event type");
 149                             break;
 150         }
 151     }
 152         return -1;
 153 }
 154
 155 void getch2(struct mp_fifo *fifo)
 156 {
 157     int r = getch2_internal();
 158     if (r >= 0)
 159         mplayer_put_key(fifo, r);
 160 }
 161
 162 void getch2_enable(void)
 163 {
 164         DWORD retval;
 165     in = GetStdHandle(STD_INPUT_HANDLE);
 166         if(!GetNumberOfConsoleInputEvents(in,&retval))
 167         {
 168                 printf("getch2: %i can't get number of input events  [disabling console input]\n",GetLastError());
 169                 getch2_status = 0;
 170         }
 171     else getch2_status=1;
 172 }
 173
 174 void getch2_disable(void)
 175 {
 176     if(!getch2_status) return; // already disabled / never enabled
 177     getch2_status=0;
 178 }
 179
 180 #ifdef CONFIG_ICONV
 181 static const struct {
 182     unsigned cp;
 183     char* alias;
 184 } cp_alias[] = {
 185     { 20127, "ASCII" },
 186     { 20866, "KOI8-R" },
 187     { 21866, "KOI8-RU" },
 188     { 28591, "ISO-8859-1" },
 189     { 28592, "ISO-8859-2" },
 190     { 28593, "ISO-8859-3" },
 191     { 28594, "ISO-8859-4" },
 192     { 28595, "ISO-8859-5" },
 193     { 28596, "ISO-8859-6" },
 194     { 28597, "ISO-8859-7" },
 195     { 28598, "ISO-8859-8" },
 196     { 28599, "ISO-8859-9" },
 197     { 28605, "ISO-8859-15" },
 198     { 65001, "UTF-8" },
 199     { 0, NULL }
 200 };
 201
 202 char* get_term_charset(void)
 203 {
 204     char codepage[10];
 205     unsigned i, cpno = GetConsoleOutputCP();
 206     if (!cpno)
 207         cpno = GetACP();
 208     if (!cpno)
 209         return NULL;
 210
 211     for (i = 0; cp_alias[i].cp; i++)
 212         if (cpno == cp_alias[i].cp)
 213             return strdup(cp_alias[i].alias);
 214
 215     snprintf(codepage, sizeof(codepage), "CP%u", cpno);
 216     return strdup(codepage);
 217 }
 218 #endif