static int dispatch_audio(short *outbuf, int length, espeak_EVENT *event)
{
int a_wave_can_be_played = 1;
#ifdef USE_ASYNC
if ((my_mode & ENOUTPUT_MODE_SYNCHRONOUS) == 0)
a_wave_can_be_played = fifo_is_command_enabled();
#endif
switch ((int)my_mode)
{
case ENOUTPUT_MODE_SPEAK_AUDIO:
case ENOUTPUT_MODE_SPEAK_AUDIO | ENOUTPUT_MODE_SYNCHRONOUS:
{
int event_type = 0;
if (event)
event_type = event->type;
if (event_type == espeakEVENT_SAMPLERATE) {
voice_samplerate = event->id.number;
if (out_samplerate != voice_samplerate) {
#ifdef HAVE_PCAUDIOLIB_AUDIO_H
if (out_samplerate != 0) {
// sound was previously open with a different sample rate
audio_object_close(my_audio);
out_samplerate = 0;
#ifdef HAVE_SLEEP
sleep(1);
#endif
}
#endif
#ifdef HAVE_PCAUDIOLIB_AUDIO_H
int error = audio_object_open(my_audio, AUDIO_OBJECT_FORMAT_S16LE, voice_samplerate, 1);
if (error != 0) {
fprintf(stderr, "error: %s\n", audio_object_strerror(my_audio, error));
err = ENS_AUDIO_ERROR;
return -1;
}
#endif
out_samplerate = voice_samplerate;
#ifdef USE_ASYNC
if ((my_mode & ENOUTPUT_MODE_SYNCHRONOUS) == 0)
event_init();
#endif
}
}
#ifdef HAVE_PCAUDIOLIB_AUDIO_H
if (out_samplerate == 0) {
int error = audio_object_open(my_audio, AUDIO_OBJECT_FORMAT_S16LE, voice_samplerate, 1);
if (error != 0) {
fprintf(stderr, "error: %s\n", audio_object_strerror(my_audio, error));
err = ENS_AUDIO_ERROR;
return -1;
}
out_samplerate = voice_samplerate;
}
#endif
#ifdef HAVE_PCAUDIOLIB_AUDIO_H
if (outbuf && length && a_wave_can_be_played) {
int error = audio_object_write(my_audio, (char *)outbuf, 2*length);
if (error != 0)
fprintf(stderr, "error: %s\n", audio_object_strerror(my_audio, error));
}
#endif
#ifdef USE_ASYNC
while (event && a_wave_can_be_played) {
// TBD: some event are filtered here but some insight might be given
// TBD: in synthesise.cpp for avoiding to create WORDs with size=0.
// TBD: For example sentence "or ALT)." returns three words
// "or", "ALT" and "".
// TBD: the last one has its size=0.
if ((event->type == espeakEVENT_WORD) && (event->length == 0))
break;
if ((my_mode & ENOUTPUT_MODE_SYNCHRONOUS) == 0) {
err = event_declare(event);
if (err != ENS_EVENT_BUFFER_FULL)
break;
usleep(10000);
a_wave_can_be_played = fifo_is_command_enabled();
} else
break;
}
#endif
}
break;
case 0:
if (synth_callback)
synth_callback(outbuf, length, event);
break;
}
return a_wave_can_be_played == 0; // 1 = stop synthesis, -1 = error
}
static int dispatch_audio(short* outbuf, int length, espeak_EVENT* event)
{//======================================================================
ENTER("dispatch_audio");
int a_wave_can_be_played = fifo_is_command_enabled();
#ifdef DEBUG_ENABLED
SHOW("*** dispatch_audio > uid=%d, [write=%p (%d bytes)], sample=%d, a_wave_can_be_played = %d\n",
(event) ? event->unique_identifier : 0, wave_test_get_write_buffer(), 2*length,
(event) ? event->sample : 0,
a_wave_can_be_played);
#endif
switch(my_mode)
{
case AUDIO_OUTPUT_PLAYBACK:
{
int event_type=0;
if(event)
{
event_type = event->type;
}
if(event_type == espeakEVENT_SAMPLERATE)
{
voice_samplerate = event->id.number;
if(out_samplerate != voice_samplerate)
{
if(out_samplerate != 0)
{
// sound was previously open with a different sample rate
wave_close(my_audio);
sleep(1);
}
out_samplerate = voice_samplerate;
if(!wave_init(voice_samplerate))
{
err = EE_INTERNAL_ERROR;
return(-1);
}
wave_set_callback_is_output_enabled( fifo_is_command_enabled);
my_audio = wave_open("alsa");
event_init();
}
}
if (outbuf && length && a_wave_can_be_played)
{
wave_write (my_audio, (char*)outbuf, 2*length);
}
while(a_wave_can_be_played) {
// TBD: some event are filtered here but some insight might be given
// TBD: in synthesise.cpp for avoiding to create WORDs with size=0.
// TBD: For example sentence "or ALT)." returns three words
// "or", "ALT" and "".
// TBD: the last one has its size=0.
if (event && (event->type == espeakEVENT_WORD) && (event->length==0))
{
break;
}
espeak_ERROR a_error = event_declare(event);
if (a_error != EE_BUFFER_FULL)
{
break;
}
SHOW_TIME("dispatch_audio > EE_BUFFER_FULL\n");
usleep(10000);
a_wave_can_be_played = fifo_is_command_enabled();
}
}
break;
case AUDIO_OUTPUT_RETRIEVAL:
if (synth_callback)
{
synth_callback(outbuf, length, event);
}
break;
case AUDIO_OUTPUT_SYNCHRONOUS:
case AUDIO_OUTPUT_SYNCH_PLAYBACK:
break;
}
if (!a_wave_can_be_played)
{
SHOW_TIME("dispatch_audio > synth must be stopped!\n");
}
SHOW_TIME("LEAVE dispatch_audio\n");
return (a_wave_can_be_played==0); // 1 = stop synthesis, -1 = error
}
