apps/talk.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2004 Jörg Hohensohn
  11  *
  12  * This module collects the Talkbox and voice UI functions.
  13  * (Talkbox reads directory names from mp3 clips called thumbnails,
  14  *  the voice UI lets menus and screens "talk" from a voicefont in memory.
  15  *
  16  * All files in this archive are subject to the GNU General Public License.
  17  * See the file COPYING in the source tree root for full license agreement.
  18  *
  19  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  20  * KIND, either express or implied.
  21  *
  22  ****************************************************************************/
  23
  24 #ifndef __TALK_H__
  25 #define __TALK_H__
  26
  27 #include <stdbool.h>
  28 #include <inttypes.h>
  29 #include "time.h"
  30
  31 #define VOICE_VERSION 400 /* 4.00 - if you change this, change it in voicefont too */
  32
  33 enum {
  34     /* See array "unit_voiced" in talk.c function "talk_value" */
  35     UNIT_INT = 1, /* plain number */
  36     UNIT_SIGNED,  /* number with mandatory sign (even if positive) */
  37     UNIT_MS,      /* milliseconds */
  38     UNIT_SEC,     /* seconds */
  39     UNIT_MIN,     /* minutes */
  40     UNIT_HOUR,    /* hours */
  41     UNIT_KHZ,     /* kHz */
  42     UNIT_DB,      /* dB, mandatory sign */
  43     UNIT_PERCENT, /* % */
  44     UNIT_MAH,     /* milliAmp hours */
  45     UNIT_PIXEL,   /* pixels */
  46     UNIT_PER_SEC, /* per second */
  47     UNIT_HERTZ,   /* hertz */
  48     UNIT_MB,      /* Megabytes */
  49     UNIT_KBIT,    /* kilobits per sec */
  50     UNIT_PM_TICK, /* peak meter units per tick */
  51     UNIT_TIME_EXACT,/* time duration/interval in seconds, says hours,mins,secs*/
  52     UNIT_TIME,    /* as above but less verbose */
  53     UNIT_LAST     /* END MARKER */
  54 };
  55
  56 #define UNIT_SHIFT (32-5) /* this many bits left from UNIT_xx enum */
  57
  58 #define DECIMAL_SHIFT (32 - 8)
  59
  60 /* make a "talkable" ID from number + unit
  61    unit is upper 4 bits, number the remaining (in regular 2's complement) */
  62 #define TALK_ID(n,u) (((long)(u))<<UNIT_SHIFT | ((n) & ~(-1L<<UNIT_SHIFT)))
  63
  64 /* make a "talkable" ID from a decimal number + unit, the decimal number
  65    is represented like x*10^d where d is the number of decimal digits */
  66 #define TALK_ID_DECIMAL(n,d,u) (((long)(u))<<UNIT_SHIFT |\
  67                              ((long)(d))<<DECIMAL_SHIFT |\
  68                              ((n) & ~(-1L<<DECIMAL_SHIFT)))
  69
  70 /* convenience macro to have both virtual pointer and ID as arguments */
  71 #define STR(id) ID2P(id), id
  72
  73 /* publish these strings, so they're stored only once (better than #define) */
  74 extern const char* const dir_thumbnail_name; /* "_dirname.talk" */
  75 extern const char* const file_thumbnail_ext; /* ".talk" for file voicing */
  76
  77 void talk_init(void);
  78 #if CONFIG_CODEC == SWCODEC
  79 bool talk_voice_required(void); /* returns true if voice codec required */
  80 #endif
  81 int talk_get_bufsize(void); /* get the loaded voice file size */
  82 void talk_buffer_steal(void); /* claim the mp3 buffer e.g. for play/record */
  83 bool is_voice_queued(void); /* Are there more voice clips to be spoken? */
  84 int talk_id(int32_t id, bool enqueue); /* play a voice ID from voicefont */
  85 int talk_file(const char* filename, bool enqueue); /* play a thumbnail from file */
  86 int talk_number(long n, bool enqueue); /* say a number */
  87 int talk_value(long n, int unit, bool enqueue); /* say a numeric value */
  88 int talk_value_decimal(long n, int unit, int decimals, bool enqueue);
  89 int talk_spell(const char* spell, bool enqueue); /* spell a string */
  90 void talk_setting(const void *global_settings_variable); /* read a setting */
  91 void talk_disable(bool disable); /* temporarily disable (or re-enable) talking (temporarily, not persisted) */
  92 void talk_force_shutup(void); /* kill voice unconditionally */
  93 void talk_shutup(void); /* Interrupt voice, as when enqueue is false */
  94
  95 /* helper function for speaking fractional numbers */
  96 void talk_fractional(char *tbuf, int value, int unit);
  97
  98 #if CONFIG_RTC
  99 void talk_time(struct tm *tm, bool enqueue);
 100 void talk_date(struct tm *tm, bool enqueue);
 101 #endif /* CONFIG_RTC */
 102
 103 /* This (otherwise invalid) ID signals the end of the array. */
 104 #define TALK_FINAL_ID LANG_LAST_INDEX_IN_ARRAY
 105
 106 /* Enqueue next utterance even if enqueue parameter is false: don't
 107    interrupt the current utterance. */
 108 void talk_force_enqueue_next(void);
 109
 110 /* speaks one or more IDs (from an array)). */
 111 int talk_idarray(long *idarray, bool enqueue);
 112 /* This makes an initializer for the array of IDs and takes care to
 113    put the final sentinel element at the end. */
 114 #define TALK_IDARRAY(ids...) ((long[]){ids,TALK_FINAL_ID})
 115 /* And this handy macro makes it look like a variadic function. */
 116 #define talk_ids(enqueue, ids...) talk_idarray(TALK_IDARRAY(ids), enqueue)
 117 /* This version talks only if talking menus are enabled, and does not
 118    enqueue the initial id. */
 119 #define cond_talk_ids(ids...) do { \
 120         if (global_settings.talk_menu) \
 121             talk_ids(false, ids); \
 122     } while(0)
 123 /* And a version that takes the array parameter... */
 124 #define cond_talk_idarray(idarray) do { \
 125         if (global_settings.talk_menu \
 126             talk_idarray(idarray, false); \
 127     } while(0)
 128 /* Convenience macro to conditionally speak something and not have
 129    it interrupted. */
 130 #define cond_talk_ids_fq(ids...) do { \
 131         if (global_settings.talk_menu) { \
 132             talk_ids(false, ids);                 \
 133             talk_force_enqueue_next(); \
 134         } \
 135     }while(0)
 136
 137 #endif /* __TALK_H__ */