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rockbox/apps/talk.c
Daniel Stenberg 2acc0ac542 Updated our source code header to explicitly mention that we are GPL v2 or 
later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
2008-06-28 18:10:04 +00:00

1001 lines
28 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2004 Jörg Hohensohn
*
* This module collects the Talkbox and voice UI functions.
* (Talkbox reads directory names from mp3 clips called thumbnails,
* the voice UI lets menus and screens "talk" from a voicefile in memory.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include "file.h"
#include "buffer.h"
#include "system.h"
#include "kernel.h"
#include "settings.h"
#include "settings_list.h"
#include "mp3_playback.h"
#include "audio.h"
#include "lang.h"
#include "talk.h"
#include "id3.h"
#include "logf.h"
#include "bitswap.h"
#include "structec.h"
#if CONFIG_CODEC == SWCODEC
#include "playback.h"
#endif
#include "debug.h"
/* Memory layout varies between targets because the
Archos (MASCODEC) devices cannot mix voice and audio playback
MASCODEC | MASCODEC | SWCODEC
(playing) | (stopped) |
audiobuf-----------+-----------+------------
audio | voice | thumbnail
|-----------|------------
| thumbnail | voice
| |------------
| | filebuf
| |------------
| | audio
audiobufend----------+-----------+------------
SWCODEC allocates dedicated buffers, MASCODEC reuses audiobuf. */
/***************** Constants *****************/
#define QUEUE_SIZE 64 /* must be a power of two */
#define QUEUE_MASK (QUEUE_SIZE-1)
const char* const dir_thumbnail_name = "_dirname.talk";
const char* const file_thumbnail_ext = ".talk";
/***************** Functional Macros *****************/
#define QUEUE_LEVEL ((queue_write - queue_read) & QUEUE_MASK)
#define LOADED_MASK 0x80000000 /* MSB */
#if CONFIG_CODEC == SWCODEC
#define MAX_THUMBNAIL_BUFSIZE 0x10000
#endif
/***************** Data types *****************/
struct clip_entry /* one entry of the index table */
{
int offset; /* offset from start of voicefile file */
int size; /* size of the clip */
};
struct voicefile /* file format of our voice file */
{
int version; /* version of the voicefile */
int target_id; /* the rockbox target the file was made for */
int table; /* offset to index table, (=header size) */
int id1_max; /* number of "normal" clips contained in above index */
int id2_max; /* number of "voice only" clips contained in above index */
struct clip_entry index[]; /* followed by the index tables */
/* and finally the mp3 clips, not visible here, bitswapped
for SH based players */
};
struct queue_entry /* one entry of the internal queue */
{
unsigned char* buf;
long len;
};
/***************** Globals *****************/
static unsigned char* p_thumbnail = NULL; /* buffer for thumbnail */
static long size_for_thumbnail; /* leftover buffer size for it */
static struct voicefile* p_voicefile; /* loaded voicefile */
static bool has_voicefile; /* a voicefile file is present */
static struct queue_entry queue[QUEUE_SIZE]; /* queue of scheduled clips */
static bool force_enqueue_next; /* enqueue next utterance even if enqueue is false */
static int queue_write; /* write index of queue, by application */
static int queue_read; /* read index of queue, by ISR context */
static int sent; /* how many bytes handed over to playback, owned by ISR */
static unsigned char curr_hd[3]; /* current frame header, for re-sync */
static int filehandle = -1; /* global, so the MMC variant can keep the file open */
static unsigned char* p_silence; /* VOICE_PAUSE clip, used for termination */
static long silence_len; /* length of the VOICE_PAUSE clip */
static unsigned char* p_lastclip; /* address of latest clip, for silence add */
static unsigned long voicefile_size = 0; /* size of the loaded voice file */
static unsigned char last_lang[MAX_FILENAME+1]; /* name of last used lang file (in talk_init) */
static bool talk_initialized; /* true if talk_init has been called */
static int talk_temp_disable_count; /* if positive, temporarily disable voice UI (not saved) */
/***************** Private implementation *****************/
static int open_voicefile(void)
{
char buf[64];
char* p_lang = "english"; /* default */
if ( global_settings.lang_file[0] &&
global_settings.lang_file[0] != 0xff )
{ /* try to open the voice file of the selected language */
p_lang = (char *)global_settings.lang_file;
}
snprintf(buf, sizeof(buf), LANG_DIR "/%s.voice", p_lang);
return open(buf, O_RDONLY);
}
/* fetch a clip from the voice file */
static unsigned char* get_clip(long id, long* p_size)
{
long clipsize;
unsigned char* clipbuf;
if (id > VOICEONLY_DELIMITER)
{ /* voice-only entries use the second part of the table */
id -= VOICEONLY_DELIMITER + 1;
if (id >= p_voicefile->id2_max)
return NULL; /* must be newer than we have */
id += p_voicefile->id1_max; /* table 2 is behind table 1 */
}
else
{ /* normal use of the first table */
if (id >= p_voicefile->id1_max)
return NULL; /* must be newer than we have */
}
clipsize = p_voicefile->index[id].size;
if (clipsize == 0) /* clip not included in voicefile */
return NULL;
clipbuf = (unsigned char *) p_voicefile + p_voicefile->index[id].offset;
#ifdef HAVE_MMC /* dynamic loading, on demand */
if (!(clipsize & LOADED_MASK))
{ /* clip used for the first time, needs loading */
lseek(filehandle, p_voicefile->index[id].offset, SEEK_SET);
if (read(filehandle, clipbuf, clipsize) != clipsize)
return NULL; /* read error */
p_voicefile->index[id].size |= LOADED_MASK; /* mark as loaded */
}
else
{ /* clip is in memory already */
clipsize &= ~LOADED_MASK; /* without the extra bit gives true size */
}
#endif
*p_size = clipsize;
return clipbuf;
}
/* load the voice file into the mp3 buffer */
static void load_voicefile(void)
{
int load_size;
int got_size;
int file_size;
#ifdef ROCKBOX_LITTLE_ENDIAN
int i;
#endif
filehandle = open_voicefile();
if (filehandle < 0) /* failed to open */
goto load_err;
file_size = filesize(filehandle);
if (file_size > audiobufend - audiobuf) /* won't fit? */
goto load_err;
#ifdef HAVE_MMC /* load only the header for now */
load_size = offsetof(struct voicefile, index);
#else /* load the full file */
load_size = file_size;
#endif
got_size = read(filehandle, audiobuf, load_size);
if (got_size != load_size /* failure */)
goto load_err;
#ifdef ROCKBOX_LITTLE_ENDIAN
logf("Byte swapping voice file");
structec_convert(audiobuf, "lllll", 1, true);
#endif
if (((struct voicefile*)audiobuf)->table /* format check */
== offsetof(struct voicefile, index))
{
p_voicefile = (struct voicefile*)audiobuf;
if (p_voicefile->version != VOICE_VERSION ||
p_voicefile->target_id != TARGET_ID)
{
logf("Incompatible voice file");
goto load_err;
}
#if CONFIG_CODEC != SWCODEC
/* MASCODEC: now use audiobuf for voice then thumbnail */
p_thumbnail = audiobuf + file_size;
p_thumbnail += (long)p_thumbnail % 2; /* 16-bit align */
size_for_thumbnail = audiobufend - p_thumbnail;
#endif
}
else
goto load_err;
#ifdef ROCKBOX_LITTLE_ENDIAN
for (i = 0; i < p_voicefile->id1_max + p_voicefile->id2_max; i++)
structec_convert(&p_voicefile->index[i], "ll", 1, true);
#endif
#ifdef HAVE_MMC
/* load the index table, now that we know its size from the header */
load_size = (p_voicefile->id1_max + p_voicefile->id2_max)
* sizeof(struct clip_entry);
got_size = read(filehandle,
(unsigned char *) p_voicefile + offsetof(struct voicefile, index), load_size);
if (got_size != load_size) /* read error */
goto load_err;
#else
close(filehandle); /* only the MMC variant leaves it open */
filehandle = -1;
#endif
/* make sure to have the silence clip, if available */
p_silence = get_clip(VOICE_PAUSE, &silence_len);
return;
load_err:
p_voicefile = NULL;
has_voicefile = false; /* don't try again */
if (filehandle >= 0)
{
close(filehandle);
filehandle = -1;
}
return;
}
/* called in ISR context if mp3 data got consumed */
static void mp3_callback(unsigned char** start, size_t* size)
{
queue[queue_read].len -= sent; /* we completed this */
queue[queue_read].buf += sent;
if (queue[queue_read].len > 0) /* current clip not finished? */
{ /* feed the next 64K-1 chunk */
#if CONFIG_CODEC != SWCODEC
sent = MIN(queue[queue_read].len, 0xFFFF);
#else
sent = queue[queue_read].len;
#endif
*start = queue[queue_read].buf;
*size = sent;
return;
}
else if (sent > 0) /* go to next entry */
{
queue_read = (queue_read + 1) & QUEUE_MASK;
}
re_check:
if (QUEUE_LEVEL != 0) /* queue is not empty? */
{ /* start next clip */
#if CONFIG_CODEC != SWCODEC
sent = MIN(queue[queue_read].len, 0xFFFF);
#else
sent = queue[queue_read].len;
#endif
*start = p_lastclip = queue[queue_read].buf;
*size = sent;
curr_hd[0] = p_lastclip[1];
curr_hd[1] = p_lastclip[2];
curr_hd[2] = p_lastclip[3];
}
else if (p_silence != NULL /* silence clip available */
&& p_lastclip != p_silence /* previous clip wasn't silence */
&& p_lastclip != p_thumbnail) /* ..or thumbnail */
{ /* add silence clip when queue runs empty playing a voice clip */
queue[queue_write].buf = p_silence;
queue[queue_write].len = silence_len;
queue_write = (queue_write + 1) & QUEUE_MASK;
goto re_check;
}
else
{
*size = 0; /* end of data */
}
}
/***************** Public routines *****************/
/* stop the playback and the pending clips */
void talk_force_shutup(void)
{
/* Most of this is MAS only */
#if CONFIG_CODEC != SWCODEC
#ifdef SIMULATOR
return;
#endif
unsigned char* pos;
unsigned char* search;
unsigned char* end;
if (QUEUE_LEVEL == 0) /* has ended anyway */
return;
#if CONFIG_CPU == SH7034
CHCR3 &= ~0x0001; /* disable the DMA (and therefore the interrupt also) */
#endif /* CONFIG_CPU == SH7034 */
/* search next frame boundary and continue up to there */
pos = search = mp3_get_pos();
end = queue[queue_read].buf + queue[queue_read].len;
if (pos >= queue[queue_read].buf
&& pos <= end) /* really our clip? */
{ /* (for strange reasons this isn't nesessarily the case) */
/* find the next frame boundary */
while (search < end) /* search the remaining data */
{
if (*search++ != 0xFF) /* quick search for frame sync byte */
continue; /* (this does the majority of the job) */
/* look at the (bitswapped) rest of header candidate */
if (search[0] == curr_hd[0] /* do the quicker checks first */
&& search[2] == curr_hd[2]
&& (search[1] & 0x30) == (curr_hd[1] & 0x30)) /* sample rate */
{
search--; /* back to the sync byte */
break; /* From looking at it, this is our header. */
}
}
if (search-pos)
{ /* play old data until the frame end, to keep the MAS in sync */
sent = search-pos;
queue_write = (queue_read + 1) & QUEUE_MASK; /* will be empty after next callback */
queue[queue_read].len = sent; /* current one ends after this */
#if CONFIG_CPU == SH7034
DTCR3 = sent; /* let the DMA finish this frame */
CHCR3 |= 0x0001; /* re-enable DMA */
#endif /* CONFIG_CPU == SH7034 */
return;
}
}
#endif /* CONFIG_CODEC != SWCODEC */
/* Either SWCODEC, or MAS had nothing to do (was frame boundary or not our clip) */
mp3_play_stop();
queue_write = queue_read = 0; /* reset the queue */
return;
}
/* Shutup the voice, except if force_enqueue_next is set. */
void talk_shutup(void)
{
if (!force_enqueue_next)
talk_force_shutup();
}
/* schedule a clip, at the end or discard the existing queue */
static void queue_clip(unsigned char* buf, long size, bool enqueue)
{
int queue_level;
if (!enqueue)
talk_shutup(); /* cut off all the pending stuff */
/* Something is being enqueued, force_enqueue_next override is no
longer in effect. */
force_enqueue_next = false;
if (!size)
return; /* safety check */
#if CONFIG_CPU == SH7034
/* disable the DMA temporarily, to be safe of race condition */
CHCR3 &= ~0x0001;
#endif
queue_level = QUEUE_LEVEL; /* check old level */
if (queue_level < QUEUE_SIZE - 1) /* space left? */
{
queue[queue_write].buf = buf; /* populate an entry */
queue[queue_write].len = size;
queue_write = (queue_write + 1) & QUEUE_MASK;
}
if (queue_level == 0)
{ /* queue was empty, we have to do the initial start */
p_lastclip = buf;
#if CONFIG_CODEC != SWCODEC
sent = MIN(size, 0xFFFF); /* DMA can do no more */
#else
sent = size;
#endif
mp3_play_data(buf, sent, mp3_callback);
curr_hd[0] = buf[1];
curr_hd[1] = buf[2];
curr_hd[2] = buf[3];
mp3_play_pause(true); /* kickoff audio */
}
else
{
#if CONFIG_CPU == SH7034
CHCR3 |= 0x0001; /* re-enable DMA */
#endif
}
return;
}
/* common code for talk_init() and talk_buffer_steal() */
static void reset_state(void)
{
queue_write = queue_read = 0; /* reset the queue */
p_voicefile = NULL; /* indicate no voicefile (trashed) */
#if CONFIG_CODEC == SWCODEC
/* Allocate a dedicated thumbnail buffer - once */
if (p_thumbnail == NULL)
{
size_for_thumbnail = audiobufend - audiobuf;
if (size_for_thumbnail > MAX_THUMBNAIL_BUFSIZE)
size_for_thumbnail = MAX_THUMBNAIL_BUFSIZE;
p_thumbnail = buffer_alloc(size_for_thumbnail);
}
#else
/* Just use the audiobuf, without allocating anything */
p_thumbnail = audiobuf;
size_for_thumbnail = audiobufend - audiobuf;
#endif
p_silence = NULL; /* pause clip not accessible */
}
/***************** Public implementation *****************/
void talk_init(void)
{
talk_temp_disable_count = 0;
if (talk_initialized && !strcasecmp(last_lang, global_settings.lang_file))
{
/* not a new file, nothing to do */
return;
}
#ifdef HAVE_MMC
if (filehandle >= 0) /* MMC: An old voice file might still be open */
{
close(filehandle);
filehandle = -1;
}
#endif
talk_initialized = true;
strncpy((char *) last_lang, (char *)global_settings.lang_file,
MAX_FILENAME);
#if CONFIG_CODEC == SWCODEC
audio_get_buffer(false, NULL); /* Must tell audio to reinitialize */
#endif
reset_state(); /* use this for most of our inits */
filehandle = open_voicefile();
has_voicefile = (filehandle >= 0); /* test if we can open it */
voicefile_size = 0;
if (has_voicefile)
{
voicefile_size = filesize(filehandle);
close(filehandle); /* close again, this was just to detect presence */
filehandle = -1;
}
}
#if CONFIG_CODEC == SWCODEC
/* return if a voice codec is required or not */
bool talk_voice_required(void)
{
return (voicefile_size != 0) /* Voice file is available */
|| (global_settings.talk_dir_clip) /* Thumbnail clips are required */
|| (global_settings.talk_file_clip);
}
#endif
/* return size of voice file */
int talk_get_bufsize(void)
{
return voicefile_size;
}
/* somebody else claims the mp3 buffer, e.g. for regular play/record */
void talk_buffer_steal(void)
{
#if CONFIG_CODEC != SWCODEC
mp3_play_stop();
#endif
#ifdef HAVE_MMC
if (filehandle >= 0) /* only relevant for MMC */
{
close(filehandle);
filehandle = -1;
}
#endif
reset_state();
}
/* play a voice ID from voicefile */
int talk_id(int32_t id, bool enqueue)
{
long clipsize;
unsigned char* clipbuf;
int32_t unit;
int decimals;
if (talk_temp_disable_count > 0)
return -1; /* talking has been disabled */
#if CONFIG_CODEC != SWCODEC
if (audio_status()) /* busy, buffer in use */
return -1;
#endif
if (p_voicefile == NULL && has_voicefile)
load_voicefile(); /* reload needed */
if (p_voicefile == NULL) /* still no voices? */
return -1;
if (id == -1) /* -1 is an indication for silence */
return -1;
decimals = (((uint32_t)id) >> DECIMAL_SHIFT) & 0x7;
/* check if this is a special ID, with a value */
unit = ((uint32_t)id) >> UNIT_SHIFT;
if (unit || decimals)
{ /* sign-extend the value */
id = (uint32_t)id << (32-DECIMAL_SHIFT);
id >>= (32-DECIMAL_SHIFT);
talk_value_decimal(id, unit, decimals, enqueue); /* speak it */
return 0; /* and stop, end of special case */
}
clipbuf = get_clip(id, &clipsize);
if (clipbuf == NULL)
return -1; /* not present */
queue_clip(clipbuf, clipsize, enqueue);
return 0;
}
/* Speaks zero or more IDs (from an array). */
int talk_idarray(long *ids, bool enqueue)
{
int r;
if(!ids)
return 0;
while(*ids != TALK_FINAL_ID)
{
if((r = talk_id(*ids++, enqueue)) <0)
return r;
enqueue = true;
}
return 0;
}
/* Make sure the current utterance is not interrupted by the next one. */
void talk_force_enqueue_next(void)
{
force_enqueue_next = true;
}
/* play a thumbnail from file */
int talk_file(const char* filename, bool enqueue)
{
int fd;
int size;
#if CONFIG_CODEC != SWCODEC
struct mp3entry info;
#endif
if (talk_temp_disable_count > 0)
return -1; /* talking has been disabled */
#if CONFIG_CODEC != SWCODEC
if (audio_status()) /* busy, buffer in use */
return -1;
#endif
if (p_thumbnail == NULL || size_for_thumbnail <= 0)
return -1;
#if CONFIG_CODEC != SWCODEC
if(mp3info(&info, filename)) /* use this to find real start */
{
return 0; /* failed to open, or invalid */
}
#endif
fd = open(filename, O_RDONLY);
if (fd < 0) /* failed to open */
{
return 0;
}
#if CONFIG_CODEC != SWCODEC
lseek(fd, info.first_frame_offset, SEEK_SET); /* behind ID data */
#endif
size = read(fd, p_thumbnail, size_for_thumbnail);
close(fd);
/* ToDo: find audio, skip ID headers and trailers */
if (size > 0 && size != size_for_thumbnail) /* Don't play missing or truncated clips */
{
#if CONFIG_CODEC != SWCODEC && !defined(SIMULATOR)
bitswap(p_thumbnail, size);
#endif
queue_clip(p_thumbnail, size, enqueue);
}
return size;
}
/* say a numeric value, this word ordering works for english,
but not necessarily for other languages (e.g. german) */
int talk_number(long n, bool enqueue)
{
int level = 2; /* mille count */
long mil = 1000000000; /* highest possible "-illion" */
if (talk_temp_disable_count > 0)
return -1; /* talking has been disabled */
#if CONFIG_CODEC != SWCODEC
if (audio_status()) /* busy, buffer in use */
return -1;
#endif
if (!enqueue)
talk_shutup(); /* cut off all the pending stuff */
if (n==0)
{ /* special case */
talk_id(VOICE_ZERO, true);
return 0;
}
if (n<0)
{
talk_id(VOICE_MINUS, true);
n = -n;
}
while (n)
{
int segment = n / mil; /* extract in groups of 3 digits */
n -= segment * mil; /* remove the used digits from number */
mil /= 1000; /* digit place for next round */
if (segment)
{
int hundreds = segment / 100;
int ones = segment % 100;
if (hundreds)
{
talk_id(VOICE_ZERO + hundreds, true);
talk_id(VOICE_HUNDRED, true);
}
/* combination indexing */
if (ones > 20)
{
int tens = ones/10 + 18;
talk_id(VOICE_ZERO + tens, true);
ones %= 10;
}
/* direct indexing */
if (ones)
talk_id(VOICE_ZERO + ones, true);
/* add billion, million, thousand */
if (mil)
talk_id(VOICE_THOUSAND + level, true);
}
level--;
}
return 0;
}
/* Say time duration/interval. Input is time in seconds,
say hours,minutes,seconds. */
static int talk_time_unit(long secs, bool exact, bool enqueue)
{
int hours, mins;
if (!enqueue)
talk_shutup();
if((hours = secs/3600)) {
secs %= 3600;
talk_value(hours, UNIT_HOUR, true);
}
if((mins = secs/60)) {
secs %= 60;
if(exact || !hours)
talk_value(mins, UNIT_MIN, true);
else talk_number(mins, true); /* don't say "minutes" */
}
if((exact && secs) || (!hours && !mins))
talk_value(secs, UNIT_SEC, true);
else if(!hours && secs)
talk_number(secs, true);
return 0;
}
void talk_fractional(char *tbuf, int value, int unit)
{
int i;
/* strip trailing zeros from the fraction */
for (i = strlen(tbuf) - 1; (i >= 0) && (tbuf[i] == '0'); i--)
tbuf[i] = '\0';
talk_number(value, true);
if (tbuf[0] != 0)
{
talk_id(LANG_POINT, true);
talk_spell(tbuf, true);
}
talk_id(unit, true);
}
int talk_value(long n, int unit, bool enqueue)
{
return talk_value_decimal(n, unit, 0, enqueue);
}
/* singular/plural aware saying of a value */
int talk_value_decimal(long n, int unit, int decimals, bool enqueue)
{
int unit_id;
static const int unit_voiced[] =
{ /* lookup table for the voice ID of the units */
[0 ... UNIT_LAST-1] = -1, /* regular ID, int, signed */
[UNIT_MS]
= VOICE_MILLISECONDS, /* here come the "real" units */
[UNIT_SEC]
= VOICE_SECONDS,
[UNIT_MIN]
= VOICE_MINUTES,
[UNIT_HOUR]
= VOICE_HOURS,
[UNIT_KHZ]
= VOICE_KHZ,
[UNIT_DB]
= VOICE_DB,
[UNIT_PERCENT]
= VOICE_PERCENT,
[UNIT_MAH]
= VOICE_MILLIAMPHOURS,
[UNIT_PIXEL]
= VOICE_PIXEL,
[UNIT_PER_SEC]
= VOICE_PER_SEC,
[UNIT_HERTZ]
= VOICE_HERTZ,
[UNIT_MB]
= LANG_MEGABYTE,
[UNIT_KBIT]
= VOICE_KBIT_PER_SEC,
[UNIT_PM_TICK]
= VOICE_PM_UNITS_PER_TICK,
};
static const int pow10[] = { /* 10^0 - 10^7 */
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
};
char tbuf[8];
char fmt[] = "%0nd";
if (talk_temp_disable_count > 0)
return -1; /* talking has been disabled */
#if CONFIG_CODEC != SWCODEC
if (audio_status()) /* busy, buffer in use */
return -1;
#endif
/* special case for time duration */
if (unit == UNIT_TIME || unit == UNIT_TIME_EXACT)
return talk_time_unit(n, unit == UNIT_TIME_EXACT, enqueue);
if (unit < 0 || unit >= UNIT_LAST)
unit_id = -1;
else
unit_id = unit_voiced[unit];
if ((n==1 || n==-1) /* singular? */
&& unit_id >= VOICE_SECONDS && unit_id <= VOICE_HOURS)
{
unit_id--; /* use the singular for those units which have */
}
/* special case with a "plus" before */
if (n > 0 && (unit == UNIT_SIGNED || unit == UNIT_DB))
{
talk_id(VOICE_PLUS, enqueue);
enqueue = true;
}
if (decimals)
{
/* needed for the "-0.5" corner case */
if (n < 0)
{
talk_id(VOICE_MINUS, enqueue);
n = -n;
}
fmt[2] = '0' + decimals;
snprintf(tbuf, sizeof(tbuf), fmt, n % pow10[decimals]);
talk_fractional(tbuf, n / pow10[decimals], unit_id);
return 0;
}
talk_number(n, enqueue); /* say the number */
talk_id(unit_id, true); /* say the unit, if any */
return 0;
}
/* spell a string */
int talk_spell(const char* spell, bool enqueue)
{
char c; /* currently processed char */
if (talk_temp_disable_count > 0)
return -1; /* talking has been disabled */
#if CONFIG_CODEC != SWCODEC
if (audio_status()) /* busy, buffer in use */
return -1;
#endif
if (!enqueue)
talk_shutup(); /* cut off all the pending stuff */
while ((c = *spell++) != '\0')
{
/* if this grows into too many cases, I should use a table */
if (c >= 'A' && c <= 'Z')
talk_id(VOICE_CHAR_A + c - 'A', true);
else if (c >= 'a' && c <= 'z')
talk_id(VOICE_CHAR_A + c - 'a', true);
else if (c >= '0' && c <= '9')
talk_id(VOICE_ZERO + c - '0', true);
else if (c == '-')
talk_id(VOICE_MINUS, true);
else if (c == '+')
talk_id(VOICE_PLUS, true);
else if (c == '.')
talk_id(VOICE_DOT, true);
else if (c == ' ')
talk_id(VOICE_PAUSE, true);
}
return 0;
}
void talk_disable(bool disable)
{
if (disable)
talk_temp_disable_count++;
else
talk_temp_disable_count--;
}
void talk_setting(const void *global_settings_variable)
{
const struct settings_list *setting;
if (!global_settings.talk_menu)
return;
setting = find_setting(global_settings_variable, NULL);
if (setting == NULL)
return;
if (setting->lang_id)
talk_id(setting->lang_id,false);
}
#if CONFIG_RTC
void talk_date(struct tm *tm, bool enqueue)
{
talk_id(LANG_MONTH_JANUARY + tm->tm_mon, enqueue);
talk_number(tm->tm_mday, true);
talk_number(1900 + tm->tm_year, true);
}
void talk_time(struct tm *tm, bool enqueue)
{
if (global_settings.timeformat == 1)
{
/* Voice the hour */
long am_pm_id = VOICE_AM;
int hour = tm->tm_hour;
if (hour >= 12)
{
am_pm_id = VOICE_PM;
hour -= 12;
}
if (hour == 0)
hour = 12;
talk_number(hour, enqueue);
/* Voice the minutes */
if (tm->tm_min == 0)
{
/* Say o'clock if the minute is 0. */
talk_id(VOICE_OCLOCK, true);
}
else
{
/* Pronounce the leading 0 */
if(tm->tm_min < 10)
talk_id(VOICE_OH, true);
talk_number(tm->tm_min, true);
}
talk_id(am_pm_id, true);
}
else
{
/* Voice the time in 24 hour format */
talk_number(tm->tm_hour, enqueue);
if (tm->tm_min == 0)
{
talk_id(VOICE_HUNDRED, true);
talk_id(VOICE_HOUR, true);
}
else
{
/* Pronounce the leading 0 */
if(tm->tm_min < 10)
talk_id(VOICE_OH, true);
talk_number(tm->tm_min, true);
}
}
}
#endif
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