source/src/vm/prnfile.cpp

   1 /*
   2         Skelton for retropc emulator
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2015.12.18-
   6
   7         [ dummy printer ]
   8 */
   9
  10 #include "prnfile.h"
  11
  12 void PRNFILE::initialize()
  13 {
  14         fio = new FILEIO();
  15         register_frame_event(this);
  16
  17         value = wait_frames = -1;
  18         strobe = false;
  19 }
  20
  21 void PRNFILE::release()
  22 {
  23         close_file();
  24         delete fio;
  25 }
  26
  27 void PRNFILE::reset()
  28 {
  29         close_file();
  30         value = -1;
  31         strobe = false;
  32 }
  33
  34 void PRNFILE::event_frame()
  35 {
  36         if(fio->IsOpened() && --wait_frames == 0) {
  37                 close_file();
  38         }
  39 }
  40
  41 void PRNFILE::write_signal(int id, uint32 data, uint32 mask)
  42 {
  43         if(id == SIG_PRINTER_DATA) {
  44                 value = data;
  45         } else if(id == SIG_PRINTER_STROBE) {
  46                 bool new_strobe = ((data & mask) != 0);
  47                 bool falling = (strobe && !new_strobe);
  48                 strobe = new_strobe;
  49
  50                 if(falling && value != -1) {
  51                         if(!fio->IsOpened()) {
  52                                 open_file();
  53                         }
  54                         fio->Fputc(value);
  55                         // wait 10sec
  56 #ifdef SUPPORT_VARIABLE_TIMING
  57                         wait_frames = (int)(vm->frame_rate() * 10.0 + 0.5);
  58 #else
  59                         wait_frames = (int)(FRAMES_PER_SEC * 10.0 + 0.5);
  60 #endif
  61                 }
  62         }
  63 }
  64
  65 uint32 PRNFILE::read_signal(int ch)
  66 {
  67         if(ch == SIG_PRINTER_BUSY) {
  68                 return 0;
  69         }
  70         return 0;
  71 }
  72
  73 void PRNFILE::open_file()
  74 {
  75         create_date_file_path(file_path, _MAX_PATH, _T("txt"));
  76         fio->Fopen(file_path, FILEIO_WRITE_BINARY);
  77 }
  78
  79 void PRNFILE::close_file()
  80 {
  81         if(fio->IsOpened()) {
  82                 // remove if the file size is less than 2 bytes
  83                 bool remove = (fio->Ftell() < 2);
  84                 fio->Fclose();
  85                 if(remove) {
  86                         FILEIO::RemoveFile(file_path);
  87                 }
  88         }
  89 }
  90
  91 #define STATE_VERSION   1
  92
  93 void PRNFILE::save_state(FILEIO* state_fio)
  94 {
  95         state_fio->FputUint32(STATE_VERSION);
  96         state_fio->FputInt32(this_device_id);
  97
  98         state_fio->FputInt32(value);
  99         state_fio->FputBool(strobe);
 100 }
 101
 102 bool PRNFILE::load_state(FILEIO* state_fio)
 103 {
 104         close_file();
 105
 106         if(state_fio->FgetUint32() != STATE_VERSION) {
 107                 return false;
 108         }
 109         if(state_fio->FgetInt32() != this_device_id) {
 110                 return false;
 111         }
 112         value = state_fio->FgetInt32();
 113         strobe = state_fio->FgetBool();
 114
 115         // post process
 116         wait_frames = -1;
 117         return true;
 118 }
 119