/* Sends a chunk of audio to the audio player and waits for completion or error. */
static gboolean
espeak_send_to_audio(TPlaybackQueueEntry *playback_queue_entry)
{
int ret = 0;
AudioTrack track;
track.num_samples = playback_queue_entry->data.audio.num_samples;
track.num_channels = 1;
track.sample_rate = espeak_sample_rate;
track.bits = 16;
track.samples = playback_queue_entry->data.audio.audio_chunk;
DBG("Espeak: Sending %i samples to audio.", track.num_samples);
/* Volume is controlled by the synthesizer. Always play at normal on audio device. */
spd_audio_set_volume(module_audio_id, 85);
ret = spd_audio_play(module_audio_id, track, SPD_AUDIO_LE);
if (ret < 0) {
DBG("ERROR: Can't play track for unknown reason.");
return FALSE;
}
DBG("Espeak: Sent to audio.");
return TRUE;
}
/* Plays the specified audio file. */
static gboolean
espeak_play_file(char *filename)
{
gboolean result = TRUE;
#if HAVE_SNDFILE
int subformat;
sf_count_t items;
sf_count_t readcount;
SNDFILE* sf;
SF_INFO sfinfo;
DBG("Espeak: Playing |%s|", filename);
memset (&sfinfo, 0, sizeof (sfinfo));
sf = sf_open(filename, SFM_READ, &sfinfo);
subformat = sfinfo.format & SF_FORMAT_SUBMASK ;
items = sfinfo.channels * sfinfo.frames;
DBG("Espeak: frames = %ld, channels = %d", sfinfo.frames, sfinfo.channels);
DBG("Espeak: samplerate = %i, items = %Ld", sfinfo.samplerate, (long long) items);
DBG("Espeak: major format = 0x%08X, subformat = 0x%08X, endian = 0x%08X",
sfinfo.format & SF_FORMAT_TYPEMASK, subformat, sfinfo.format & SF_FORMAT_ENDMASK);
if (sfinfo.channels < 1 || sfinfo.channels > 2) {
DBG("Espeak: ERROR: channels = %d.\n", sfinfo.channels);
result = FALSE;
goto cleanup1;
}
if (sfinfo.frames > 0x7FFFFFFF) {
DBG("Espeak: ERROR: Unknown number of frames.");
result = FALSE;
goto cleanup1;
}
if (subformat == SF_FORMAT_FLOAT || subformat == SF_FORMAT_DOUBLE) {
/* Set scaling for float to integer conversion. */
sf_command (sf, SFC_SET_SCALE_FLOAT_INT_READ, NULL, SF_TRUE);
}
AudioTrack track;
track.num_samples = sfinfo.frames;
track.num_channels = sfinfo.channels;
track.sample_rate = sfinfo.samplerate;
track.bits = 16;
track.samples = malloc(items * sizeof(short));
if (NULL == track.samples) {
DBG("Espeak: ERROR: Cannot allocate audio buffer.");
result = FALSE;
goto cleanup1;
}
readcount = sf_read_short(sf, (short *) track.samples, items);
DBG("Espeak: read %Ld items from audio file.", (long long) readcount);
if (readcount > 0) {
track.num_samples = readcount / sfinfo.channels;
DBG("Espeak: Sending %i samples to audio.", track.num_samples);
/* Volume is controlled by the synthesizer. Always play at normal on audio device. */
spd_audio_set_volume(module_audio_id, EspeakSoundIconVolume);
int ret = spd_audio_play(module_audio_id, track, SPD_AUDIO_LE);
if (ret < 0) {
DBG("ERROR: Can't play track for unknown reason.");
result = FALSE;
goto cleanup2;
}
DBG("Espeak: Sent to audio.");
}
cleanup2:
xfree(track.samples);
cleanup1:
sf_close(sf);
#endif
return result;
}
char *do_message(SPDMessageType msgtype)
{
int ret;
char *cur_line;
GString *msg;
size_t n;
int nlines = 0;
msg = g_string_new("");
printf("202 OK RECEIVING MESSAGE\n");
fflush(stdout);
while (1) {
cur_line = NULL;
n = 0;
ret = spd_getline(&cur_line, &n, stdin);
nlines++;
if (ret == -1)
return g_strdup("401 ERROR INTERNAL");
if (!strcmp(cur_line, "..\n")) {
g_free(cur_line);
cur_line = g_strdup(".\n");
} else if (!strcmp(cur_line, ".\n")) {
/* Strip the trailing \n */
msg->str[strlen(msg->str) - 1] = 0;
g_free(cur_line);
break;
}
g_string_append(msg, cur_line);
g_free(cur_line);
}
if ((msgtype != SPD_MSGTYPE_TEXT) && (nlines > 2)) {
return g_strdup("305 DATA MORE THAN ONE LINE");
}
if ((msgtype == SPD_MSGTYPE_CHAR) && (!strcmp(msg->str, "space"))) {
g_string_free(msg, 1);
msg = g_string_new(" ");
}
/* no sure we need this check here at all */
if (msg->str == NULL || msg->str[0] == 0) {
DBG("requested data NULL or empty\n");
g_string_free(msg, TRUE);
return g_strdup("301 ERROR CANT SPEAK");
}
/* check voice and synthesis_voice settings for consistency */
if (msg_settings.voice.name == NULL
&& msg_settings_old.voice.name != NULL
&& msg_settings.voice_type == msg_settings_old.voice_type) {
/* force to set voice again, since synthesis_voice changed to NULL */
msg_settings_old.voice_type = -1;
}
/* Volume is controlled by the synthesizer. Always play at normal on audio device. */
if (spd_audio_set_volume(module_audio_id, 85) < 0) {
DBG("Can't set volume. audio not initialized?");
}
ret = module_speak(msg->str, strlen(msg->str), msgtype);
g_string_free(msg, 1);
if (ret <= 0)
return g_strdup("301 ERROR CANT SPEAK");
return g_strdup("200 OK SPEAKING");
}
