firm/sample/simple_mp3_player/target/os/task_fileio.c

   1
   2 #include "pff.h"
   3 #include "lib.h"
   4 #include "task_fileio.h"
   5 #include "task_menu.h"
   6 #include "ipc_menu.h"
   7 #include "ipc_audio.h"
   8 #include "ntl.h"
   9 #include "ntlusr.h"
  10
  11 static FATFS fatfs;
  12 static DIR dir;
  13 static FILINFO filinfo;
  14
  15 static int readfunc(void *buf, int siz)
  16 {
  17     WORD cnt;
  18     NTLEVT_START(NTLUSR_TRACK_FILEIO, NTLUSR_EVENT_FILEIO_READING);
  19     pf_read(buf, siz, &cnt);
  20     NTLEVT_END(NTLUSR_TRACK_FILEIO, NTLUSR_EVENT_FILEIO_READING);
  21     return cnt;
  22 }
  23
  24 static int play(const char *filename)
  25 {
  26     FRESULT r = pf_open(filename);
  27     if (r != FR_OK) {
  28         return 1;
  29     }
  30     static int vol_prev = 0, vol_curr = 0;
  31     int divcnt = 0;
  32     int control = 0;
  33
  34     ipc_menu_set_filename(filinfo.fname);
  35     ipc_menu_set_location(fatfs.fptr * 100 / fatfs.fsize);
  36
  37     while (ipc_audio_play(readfunc)) {
  38         NTLEVT_START(NTLUSR_TRACK_FILEIO, NTLUSR_EVENT_FILEIO_OTHERS);
  39         switch ((divcnt++) % 4) {
  40             case 0:
  41                 /*
  42                  * \e$BAaAw$j$d4,$-La$7\e(B
  43                  */
  44                 menu_get_audio_control(&control);
  45                 if (control != 0) {
  46                     switch (control) {
  47                         case AUDIO_CONTROL_FWD:
  48                             if (fatfs.fptr + 8192 < fatfs.fsize) {
  49                                 pf_lseek(fatfs.fptr + 8192);
  50                             }
  51                             ipc_audio_cancel();
  52                             break;
  53                         case AUDIO_CONTROL_REW:
  54                             if (16384 < fatfs.fptr) {
  55                                 pf_lseek(fatfs.fptr - 16384);
  56                             }
  57                             ipc_audio_cancel();
  58                             break;
  59                     }
  60                 }
  61                 break;
  62             case 1:
  63                 /*
  64                  * \e$B%*!<%G%#%*>pJs$N<hF@\e(B
  65                  */
  66                 menu_get_audio_info(&vol_curr);
  67                 if (vol_curr != vol_prev) {
  68                     ipc_audio_volume(vol_curr, vol_curr);
  69                 }
  70                 vol_prev = vol_curr;
  71                 break;
  72             case 2:
  73                 /*
  74                  * \e$B0LCV$N@_Dj\e(B
  75                  */
  76                 ipc_menu_set_location(fatfs.fptr * 100 / fatfs.fsize);
  77                 break;
  78         }
  79         NTLEVT_END(NTLUSR_TRACK_FILEIO, NTLUSR_EVENT_FILEIO_OTHERS);
  80     }
  81     return 0;
  82 }
  83
  84 static int is_music_file(const char *filename)
  85 {
  86     int len = strlen(filename);
  87     if (len < 4) {
  88         return 0;
  89     }
  90     if (strcmp(filename + len - 4, ".MP3") == 0) {
  91         return 1;
  92     }
  93     if (strcmp(filename + len - 4, ".WAV") == 0) {
  94         return 1;
  95     }
  96     return 0;
  97 }
  98
  99 int task_fileio(int argc, char *argv[])
 100 {
 101   while (1) {
 102       ipc_menu_set_filename("Mounting...");
 103       if (pf_mount(&fatfs)) {
 104           continue;
 105       }
 106       while (1) {
 107           ipc_menu_set_filename("Directory");
 108           if (pf_opendir(&dir, "")) {
 109               break;
 110           }
 111           while (!pf_readdir(&dir, &filinfo) && filinfo.fname[0]) {
 112               ipc_menu_set_filename(filinfo.fname);
 113               if (!(filinfo.fattrib & (AM_DIR | AM_HID))) {
 114                   if (is_music_file(filinfo.fname)) {
 115                       if (play(filinfo.fname)) {
 116                           break;
 117                       }
 118                   }
 119               }
 120           }
 121       }
 122   }
 123
 124   return 0;
 125 }
 126