package/fonera-mp3/src/lib/mp3_states.h

   1 /*
   2 * FOXMP3
   3 * Copyright (c) 2006 acmesystems.it - john@acmesystems.it
   4 *
   5 * This program is free software; you can redistribute it and/or modify
   6 * it under the terms of the GNU General Public License as published by
   7 * the Free Software Foundation; either version 2 of the License, or
   8 * (at your option) any later version.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
  18 *
  19 * Feedback, Bugs...  info@acmesystems.it
  20 *
  21 */
  22
  23 typedef struct _EVENT {
  24         unsigned char *name;
  25 } EVENT;
  26
  27 typedef struct _EVENT_PARAM {
  28         int numeric;
  29         unsigned char *text;
  30 } EVENT_PARAM;
  31
  32 typedef void (*STATE_ENTER)(int state_last, int event, EVENT_PARAM *param);
  33 typedef void (*STATE_LEAVE)(int state_new, int event);
  34
  35 typedef struct _STATE {
  36         unsigned char *name;
  37         STATE_ENTER enter;
  38         STATE_LEAVE leave;
  39 } STATE;
  40
  41 typedef struct _TRANSITION {
  42         int old_state;
  43         int event;
  44         int new_state;
  45 } TRANSITION;
  46
  47 // a = id, b = name, c = enter, d = leave
  48 #define STATE_ADD(a, b, c, d) {                         \
  49                 if((a > 0) && (a < MAX_STATE_COUNT)){   \
  50                         states[a].name = strdup(b);     \
  51                         states[a].enter = c;            \
  52                         states[a].leave = d;            \
  53                 }                                       \
  54         }
  55
  56 // a = old, b = event, c = new
  57 #define TRANSITION_ADD(a, b, c) {                                       \
  58                 if((transition_count >= 0) &&                           \
  59                         (transition_count < MAX_TRANSITION_COUNT)){     \
  60                         transitions[transition_count].old_state = a;    \
  61                         transitions[transition_count].event = b;        \
  62                         transitions[transition_count].new_state = c;    \
  63                         transition_count++;                             \
  64                 }                                                       \
  65         }
  66
  67 // a = id, b = name
  68 #define EVENT_ADD(a, b) {                               \
  69                 if((a > 0) && (a < MAX_EVENT_COUNT)){   \
  70                         events[a].name = strdup(b);     \
  71                 }                                       \
  72         }
  73 #define MAX_EVENT_COUNT         20
  74 #define MAX_STATE_COUNT         20
  75 #define MAX_TRANSITION_COUNT    60
  76
  77 #define MP3_STATE_NONE                  0
  78 #define MP3_STATE_STARTUP               1
  79 #define MP3_STATE_IDLE                  2
  80 #define MP3_STATE_FILE_START            3
  81 #define MP3_STATE_FILE_HANDLE           4
  82 #define MP3_STATE_STREAM_START          5
  83 #define MP3_STATE_STREAM_HANDLE         6
  84 #define MP3_STATE_ERROR                 7
  85 #define MP3_STATE_SHUTDOWN              8
  86 #define MP3_STATE_DEFAULT               9
  87
  88 #define MP3_EVENT_TIMEOUT               1
  89 #define MP3_EVENT_FILE                  2
  90 #define MP3_EVENT_STREAM                3
  91 #define MP3_EVENT_STOP                  4
  92 #define MP3_EVENT_ERROR                 5
  93 #define MP3_EVENT_SHUTDOWN              6
  94 #define MP3_EVENT_END                   7
  95
  96 #define MP3_EVENT_GENERIC_VOLUME        0
  97 #define MP3_EVENT_GENERIC_STATE         1
  98 #define MP3_EVENT_GENERIC_BASS          2
  99 #define MP3_EVENT_GENERIC_PLAYTIME      3
 100
 101 void state_startup_enter(int state_last, int event, EVENT_PARAM *param);
 102 void state_idle_enter(int state_last, int event, EVENT_PARAM *param);
 103 void state_file_startup_enter(int state_last, int event, EVENT_PARAM *param);
 104 void state_file_startup_leave(int state_new, int event);
 105 void state_file_handle_enter(int state_last, int event, EVENT_PARAM *param);
 106 void state_file_handle_leave(int state_new, int event);
 107 void state_stream_startup_enter(int state_last, int event, EVENT_PARAM *param);
 108 void state_stream_startup_leave(int state_last, int event);
 109 void state_stream_handle_enter(int state_last, int event, EVENT_PARAM *param);
 110 void state_stream_handle_leave(int state_new, int event);
 111 void state_error_enter(int state_last, int event, EVENT_PARAM *param);
 112 void state_shutdown_enter(int state_last, int event, EVENT_PARAM *param);
 113 void state_generic_event(unsigned int event, unsigned char in_int,
 114                 unsigned char *out_uchar);