int
ad1848_set_channel_gain(struct ad1848_softc *sc, int device,
struct ad1848_volume *gp)
{
struct ad1848_mixerinfo *info = &mixer_channel_info[device];
u_char reg;
u_int atten;
sc->gains[device] = *gp;
atten = ((AUDIO_MAX_GAIN - gp->left) * info->atten_bits) /
AUDIO_MAX_GAIN;
reg = ad_read(sc, info->left_reg) & (info->atten_mask);
if (device == AD1848_MONITOR_CHANNEL)
reg |= ((atten & info->atten_bits) << 2);
else
reg |= ((atten & info->atten_bits));
ad_write(sc, info->left_reg, reg);
if (!info->right_reg)
return 0;
atten = ((AUDIO_MAX_GAIN - gp->right) * info->atten_bits) /
AUDIO_MAX_GAIN;
reg = ad_read(sc, info->right_reg);
reg &= (info->atten_mask);
ad_write(sc, info->right_reg, (atten & info->atten_bits) | reg);
return 0;
}
/*
* Close function is called at splaudio().
*/
void
ad1848_close(void *addr)
{
struct ad1848_softc *sc = addr;
u_char r;
ad1848_halt_output(sc);
ad1848_halt_input(sc);
sc->sc_pintr = NULL;
sc->sc_rintr = NULL;
DPRINTF(("ad1848_close: stop DMA\n"));
ad_write(sc, SP_LOWER_BASE_COUNT, (u_char)0);
ad_write(sc, SP_UPPER_BASE_COUNT, (u_char)0);
/* Disable interrupts */
DPRINTF(("ad1848_close: disable intrs\n"));
ad_write(sc, SP_PIN_CONTROL,
ad_read(sc, SP_PIN_CONTROL) & ~INTERRUPT_ENABLE);
DPRINTF(("ad1848_close: disable capture and playback\n"));
r = ad_read(sc, SP_INTERFACE_CONFIG);
r &= ~(CAPTURE_ENABLE | PLAYBACK_ENABLE);
ad_write(sc, SP_INTERFACE_CONFIG, r);
#ifdef AUDIO_DEBUG
if (ad1848debug > 2)
ad1848_dump_regs(sc);
#endif
}
int
ad1848_set_rec_port(struct ad1848_softc *sc, int port)
{
u_char inp, reg;
DPRINTF(("ad1848_set_rec_port: 0x%x\n", port));
if (port == MIC_IN_PORT) {
inp = MIC_INPUT;
} else if (port == LINE_IN_PORT) {
inp = LINE_INPUT;
} else if (port == DAC_IN_PORT) {
inp = MIXED_DAC_INPUT;
} else if (sc->mode == 2 && port == AUX1_IN_PORT) {
inp = AUX_INPUT;
} else
return EINVAL;
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
reg &= INPUT_SOURCE_MASK;
ad_write(sc, SP_LEFT_INPUT_CONTROL, (inp | reg));
reg = ad_read(sc, SP_RIGHT_INPUT_CONTROL);
reg &= INPUT_SOURCE_MASK;
ad_write(sc, SP_RIGHT_INPUT_CONTROL, (inp | reg));
sc->rec_port = port;
return 0;
}
/*
* Wait for the user to type a <CR> then capture input audio for approx. 2 sec
* and compute a measure of its power.
*/
int
main (int32 argc, char *argv[])
{
char line[1024];
ad_rec_t *ad;
int16 buf[1000];
int32 sps;
sps = DEFAULT_SAMPLES_PER_SEC;
if ((ad = ad_open_sps (sps)) == NULL)
E_FATAL("ad_open_sps failed\n");
for (;;) {
printf ("Hit <CR> to measure A/D power; Q<CR> to quit: ");
fgets (line, sizeof(line), stdin);
if ((line[0] == 'q') || (line[0] == 'Q'))
break;
ad_start_rec (ad);
adpow(ad);
ad_stop_rec (ad);
while (ad_read (ad, buf, 1000) >= 0); /* Flush any buffered, unread data */
}
ad_close (ad);
return 0;
}
THREAD_START
process_thread(void *aParam)
{
ad_rec_t *in_ad = 0;
int16 samples[BUFSIZE];
int32 num_samples;
cond_wait(startEvent);
if ((in_ad = ad_open_sps((int) cmd_ln_float32("-samprate"))) == NULL) {
printf("Failed to open audio input device\n");
exit(1);
}
ad_start_rec(in_ad);
while (cond_wait_timed(&finishEvent, TIMEOUT) == COND_TIMEDOUT) {
num_samples = ad_read(in_ad, samples, BUFSIZE);
if (num_samples > 0) {
/** dump the recorded audio to disk */
if (fwrite(samples, sizeof(int16), num_samples, dump) <
num_samples) {
printf("Error writing audio to dump file.\n");
}
ld_process_raw(&decoder, samples, num_samples);
}
}
ad_stop_rec(in_ad);
ad_close(in_ad);
ld_end_utt(&decoder);
return 0;
}
/*
* Compute power in input signal for about 2 sec
*/
static void adpow (ad_rec_t *ad)
{
double en, p;
int32 i, k, prev, len, s;
int16 buf[1000];
en = 0.0;
prev = 0;
for (len = 0; len < 32000; ) { /* len = #samples gathered */
if ((k = ad_read (ad, buf, 1000)) < 0)
E_FATAL("ad_read returned %d\n", k);
for (i = 0; i < k; i++) {
s = buf[i] - prev; /* Pre-emphasis filter */
en += ((double)s)*((double)s);
prev = buf[i];
}
len += k;
}
en /= len;
p = sqrt (en);
if (p < 1.0)
p = 1.0;
E_INFO("log(Power) = %.2f dB\n", 10.0 * log10(p));
}
DWORD WINAPI
process_thread(LPVOID aParam)
{
ad_rec_t *in_ad = 0;
int16 samples[BUFSIZE];
int32 num_samples;
WaitForSingleObject(startEvent, INFINITE);
in_ad = ad_open_sps(cmd_ln_int32 ("-samprate"));
ad_start_rec(in_ad);
while (WaitForSingleObject(finishEvent, 0) == WAIT_TIMEOUT) {
num_samples = ad_read(in_ad, samples, BUFSIZE);
if (num_samples > 0) {
if (ld_utt_proc_raw(&decoder, samples, num_samples) < 0) {
printf(">>>>> ld_utt_proc_raw() returned unexpectedly.\n");
return -1;
}
}
}
ad_stop_rec(in_ad);
ad_close(in_ad);
if (ld_utt_end(&decoder)) {
printf(">>>>> ld_utt_end() failed.\n");
return -1;
}
return 0;
}
void
ad1848_mute_channel(struct ad1848_softc *sc, int device, int mute)
{
u_char reg;
reg = ad_read(sc, mixer_channel_info[device].left_reg);
if (mute & MUTE_LEFT) {
if (device == AD1848_MONITOR_CHANNEL) {
if (sc->open_mode & FREAD)
ad1848_mute_wave_output(sc, WAVE_UNMUTE1, 0);
ad_write(sc, mixer_channel_info[device].left_reg,
reg & ~DIGITAL_MIX1_ENABLE);
} else if (device == AD1848_OUT_CHANNEL)
ad_write(sc, mixer_channel_info[device].left_reg,
reg | MONO_OUTPUT_MUTE);
else
ad_write(sc, mixer_channel_info[device].left_reg,
reg | 0x80);
} else if (!(sc->mute[device] & MUTE_LEFT)) {
if (device == AD1848_MONITOR_CHANNEL) {
ad_write(sc, mixer_channel_info[device].left_reg,
reg | DIGITAL_MIX1_ENABLE);
if (sc->open_mode & FREAD)
ad1848_mute_wave_output(sc, WAVE_UNMUTE1, 1);
} else if (device == AD1848_OUT_CHANNEL)
ad_write(sc, mixer_channel_info[device].left_reg,
reg & ~MONO_OUTPUT_MUTE);
else
ad_write(sc, mixer_channel_info[device].left_reg,
reg & ~0x80);
}
if (!mixer_channel_info[device].right_reg)
return;
reg = ad_read(sc, mixer_channel_info[device].right_reg);
if (mute & MUTE_RIGHT) {
ad_write(sc, mixer_channel_info[device].right_reg, reg | 0x80);
} else if (!(sc->mute[device] & MUTE_RIGHT)) {
ad_write(sc, mixer_channel_info[device].right_reg, reg &~0x80);
}
}
/**
* You must sucessfully call spInitListener
* once before using this function.
*
* Reads the next block of audio from the microphone
* up to SPLBUFSIZE number of samples
* (defined in splistener.h).
* If an utterance was completed in that block,
* the transcription is stored in the string words.
*
* When calling this function in a realtime loop, delay
* by some amount of time between calls keeping in mind
* your recording's sample rate and maximum samples read
* per call (ex. sleep the thread for 100 milliseconds)
* so that some audio can be recorded for the next call.
*
* @return true if a speech session was completed and
* transcribed this block, otherwise false.
*/
static bool spDecode() {
static bool uttered = false;
// lock pocketsphinx resources to make sure they
// don't get freed by main thread while in use
std::lock_guard<std::mutex> ps_lock(ps_mtx);
if(!mic || !ps)
return false;
int samples_read = ad_read(mic, buf, SPLBUFSIZE);
if (samples_read <= 0) {
spError("failed to read audio :(");
return false;
}
ps_process_raw(ps, buf, samples_read, FALSE, FALSE);
bool talking = ps_get_in_speech(ps);
// Just started talking
if (talking && !uttered) {
uttered = true;
return false;
}
// Stopped talking, so transcribe what was said
// and begin the next utterance
if (!talking && uttered) {
ps_end_utt(ps);
const char *trans = ps_get_hyp(ps, NULL);
if (ps_start_utt(ps) < 0) {
spError("failed to start utterance :(");
}
uttered = false;
int l = strlen(trans);
if (trans && l > 0) {
std::lock_guard<std::mutex> lock(words_mtx);
if (words && l + 1 > words_buf_size) {
delete words;
words = NULL;
}
if (!words) {
words = new char[l + 1];
words_buf_size = l + 1;
}
std::copy(trans, trans + l, words);
words[l] = '\0';
return true;
}
}
return false;
}
void
ad1848_dump_regs(struct ad1848_softc *sc)
{
int i;
u_char r;
printf("ad1848 status=%02x", ADREAD(sc, AD1848_STATUS));
printf(" regs: ");
for (i = 0; i < 16; i++) {
r = ad_read(sc, i);
printf("%02x ", r);
}
if (sc->mode == 2) {
for (i = 16; i < 32; i++) {
r = ad_read(sc, i);
printf("%02x ", r);
}
}
printf("\n");
}
int decode()
{
int ret;
int16 buf[BUFFER_SIZE];
printf("Listening for input...\n");
if (ad_start_rec(ad) < 0) {
printf("Error starting recording.\n");
return 0;
}
//check if not silent
while ((ret = cont_ad_read(c_ad, buf, BUFFER_SIZE)) == 0)
usleep(1000);
if (ps_start_utt(ps, NULL) < 0) {
printf("Failed to start utterance.\n");
return 0;
}
ret = ps_process_raw(ps, buf, BUFFER_SIZE, 0, 0);
if (ret < 0) {
printf("Error decoding.\n");
return 0;
}
do
{
ret = cont_ad_read(c_ad, buf, BUFFER_SIZE);
if (ret < 0) {
printf("Failed to record audio.\n");
return 0;
} else if(ret > 0) {
// Valid speech data read.
ret = ps_process_raw(ps, buf, 4096, 0, 0);
if (ret < 0) {
printf("Error decoding.\n");
return 0;
}
} else {
//no data
usleep(1000);
}
} while(getRun());
ad_stop_rec(ad);
while (ad_read(ad, buf, BUFFER_SIZE) >= 0);
cont_ad_reset(c_ad);
ps_end_utt(ps);
return 1;
}
int
ad1848_set_rec_gain(struct ad1848_softc *sc, struct ad1848_volume *gp)
{
u_char reg, gain;
DPRINTF(("ad1848_set_rec_gain: %d:%d\n", gp->left, gp->right));
sc->rec_gain = *gp;
gain = (gp->left * GAIN_22_5) / AUDIO_MAX_GAIN;
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
reg &= INPUT_GAIN_MASK;
ad_write(sc, SP_LEFT_INPUT_CONTROL, (gain & 0x0f) | reg);
gain = (gp->right * GAIN_22_5) / AUDIO_MAX_GAIN;
reg = ad_read(sc, SP_RIGHT_INPUT_CONTROL);
reg &= INPUT_GAIN_MASK;
ad_write(sc, SP_RIGHT_INPUT_CONTROL, (gain & 0x0f) | reg);
return 0;
}
int
ad1848_set_mic_gain(struct ad1848_softc *sc, struct ad1848_volume *gp)
{
u_char reg;
DPRINTF(("cs4231_set_mic_gain: %d\n", gp->left));
if (gp->left > AUDIO_MAX_GAIN / 2) {
sc->mic_gain_on = 1;
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
ad_write(sc, SP_LEFT_INPUT_CONTROL,
reg | INPUT_MIC_GAIN_ENABLE);
} else {
sc->mic_gain_on = 0;
reg = ad_read(sc, SP_LEFT_INPUT_CONTROL);
ad_write(sc, SP_LEFT_INPUT_CONTROL,
reg & ~INPUT_MIC_GAIN_ENABLE);
}
return 0;
}
static void
wait_for_calibration(struct ad1848_softc *sc)
{
int timeout;
DPRINTF(("ad1848: Auto calibration started.\n"));
/*
* Wait until the auto calibration process has finished.
*
* 1) Wait until the chip becomes ready (reads don't return SP_IN_INIT).
* 2) Wait until the ACI bit of I11 goes hi and then lo.
* a) With AD1848 alike, ACI goes hi within 5 sample cycles
* and remains hi for ~384 sample periods.
* b) With CS4231 alike, ACI goes hi immediately and remains
* hi for at least 168 sample periods.
*/
timeout = AD1848_TIMO;
while (timeout > 0 && ADREAD(sc, AD1848_IADDR) == SP_IN_INIT)
timeout--;
if (ADREAD(sc, AD1848_IADDR) == SP_IN_INIT)
DPRINTF(("ad1848: Auto calibration timed out(1).\n"));
if (!(sc->sc_flags & AD1848_FLAG_32REGS)) {
timeout = AD1848_TIMO;
while (timeout > 0 &&
!(ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG))
timeout--;
if (!(ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG)) {
DPRINTF(("ad1848: Auto calibration timed out(2).\n"));
}
}
timeout = AD1848_TIMO;
while (timeout > 0 && ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG)
timeout--;
if (ad_read(sc, SP_TEST_AND_INIT) & AUTO_CAL_IN_PROG)
DPRINTF(("ad1848: Auto calibration timed out(3).\n"));
}
/*
* This function doesn't set the mute flags but does use them.
* The mute flags reflect the mutes that have been applied by the user.
* However, the driver occasionally wants to mute devices (e.g. when chaing
* sampling rate). These operations should not affect the mute flags.
*/
void
ad1848_mute_channel(struct ad1848_softc *sc, int device, int mute)
{
u_char reg;
reg = ad_read(sc, mixer_channel_info[device].left_reg);
if (mute & MUTE_LEFT) {
if (device == AD1848_MONITOR_CHANNEL) {
ad_write(sc, mixer_channel_info[device].left_reg,
reg & 0xFE);
} else {
ad_write(sc, mixer_channel_info[device].left_reg,
reg | 0x80);
}
} else if (!(sc->mute[device] & MUTE_LEFT)) {
if (device == AD1848_MONITOR_CHANNEL) {
ad_write(sc, mixer_channel_info[device].left_reg,
reg | 0x01);
} else {
ad_write(sc, mixer_channel_info[device].left_reg,
reg & ~0x80);
}
}
if (!mixer_channel_info[device].right_reg) {
return;
}
reg = ad_read(sc, mixer_channel_info[device].right_reg);
if (mute & MUTE_RIGHT) {
ad_write(sc, mixer_channel_info[device].right_reg, reg | 0x80);
} else if (!(sc->mute[device] & MUTE_RIGHT)) {
ad_write(sc, mixer_channel_info[device].right_reg, reg & ~0x80);
}
}
/*
* Continuous recognition from mic
*/
int
recognize_from_mic()
{
ad_rec_t *ad;
int16 adbuf[2048];
const char *fname;
const char* seg;
int32 k;
char str[1000]="";
uint8 utt_started, in_speech;
if ((ad = ad_open_dev(cmd_ln_str_r(config, "-adcdev"),16000)) == NULL)
perror("Failed to open audio device\n");
if (ad_start_rec(ad) < 0)
perror("Failed to start recording\n");
ps_start_utt(ps);
utt_started = FALSE;
ps_seg_t *psegt;
while (!finished) {
if ((k = ad_read(ad, adbuf, 2048)) < 0)
perror("Failed to read audio\n");
ps_process_raw(ps, adbuf, k, FALSE, FALSE);
in_speech = ps_get_in_speech(ps);
if (in_speech && !utt_started) {
utt_started = TRUE;
}
if (!in_speech && utt_started) {
ps_end_utt(ps);
psegt = ps_seg_iter(ps, NULL);
while (psegt!=NULL){
seg = ps_seg_word(psegt);
strncpy_s( str, seg, strlen(seg));
listenCallback(str);
printf("%s\n", seg);
int prob = ps_seg_prob(psegt,NULL,NULL,NULL);
printf("%d\n", prob);
psegt = ps_seg_next(psegt);
}
ps_start_utt(ps);
utt_started = FALSE;
}
Sleep(100);
}
ps_end_utt(ps);
fclose(rawfd);
return 0;
}
static int
read_audio_adev(int16 * buf, int len)
{
int k;
if (!ad) {
E_FATAL("Failed to read audio from mic\n");
return -1;
}
while ((k = ad_read(ad, buf, len)) == 0)
/* wait until something is read */
sleep_msec(50);
return k;
}
/* This function is called periodically by status_run(). It updates the device_state_t
* data, which is accessed by the READ command in object device
*/
void device_state_update() {
struct timeval now;
if (!first_time) {
first_time = 1;
ad_init(0);
ad_init(1);
}
gettimeofday(&now, NULL);
device_state.cur_time = now.tv_sec;
device_state.ps_voltage[0] = 5000;
device_state.ps_current[0] = 500;
device_state.ps_current[1] = 500;
device_state.ps_voltage[1] = ad_read(0);
device_state.ps_current[2] = 500;
device_state.ps_voltage[2] = ad_read(1);
device_state.error_code = 0;
device_state.memory_free = free_memory();
device_state.state_code = 0;
}
/*
* Main utterance processing loop:
* for (;;) {
* start utterance and wait for speech to process
* decoding till end-of-utterance silence will be detected
* print utterance result;
* }
*/
static void
recognize_from_microphone()
{
ad_rec_t *ad;
int16 adbuf[2048];
uint8 utt_started, in_speech;
int32 k;
char const *hyp;
if ((ad = ad_open_dev(cmd_ln_str_r(config, "-adcdev"),
(int) cmd_ln_float32_r(config,
"-samprate"))) == NULL)
E_FATAL("Failed to open audio device\n");
if (ad_start_rec(ad) < 0)
E_FATAL("Failed to start recording\n");
if (ps_start_utt(ps) < 0)
E_FATAL("Failed to start utterance\n");
utt_started = FALSE;
E_INFO("Ready....\n");
for (;;) {
if ((k = ad_read(ad, adbuf, 2048)) < 0)
E_FATAL("Failed to read audio\n");
ps_process_raw(ps, adbuf, k, FALSE, FALSE);
in_speech = ps_get_in_speech(ps);
if (in_speech && !utt_started) {
utt_started = TRUE;
E_INFO("Listening...\n");
}
if (!in_speech && utt_started) {
/* speech -> silence transition, time to start new utterance */
ps_end_utt(ps);
hyp = ps_get_hyp(ps, NULL );
if (hyp != NULL) {
printf("%s\n", hyp);
fflush(stdout);
}
if (ps_start_utt(ps) < 0)
E_FATAL("Failed to start utterance\n");
utt_started = FALSE;
E_INFO("Ready....\n");
}
sleep_msec(100);
}
ad_close(ad);
}
static void
recognize_from_microphone()
{
ad_rec_t *ad;
int16 adbuf[2048];
uint8 utt_started, in_speech;
int32 k;
char const *hyp;
if ((ad = ad_open_dev(AUDIO_DEVICE_NAME,
(int) SAMPLE_RATE )) == NULL) {
E_FATAL("Failed to open audio device\n");
}
if (ad_start_rec(ad) < 0) {
E_FATAL("Failed to start recording\n");
}
if (ps_start_utt(ps) < 0) {
E_FATAL("Failed to start utterance\n");
}
utt_started = FALSE;
printf("READY....\n");
for (;;) {
if ((k = ad_read(ad, adbuf, 2048)) < 0)
E_FATAL("Failed to read audio\n");
ps_process_raw(ps, adbuf, k, FALSE, FALSE);
in_speech = ps_get_in_speech(ps);
if (in_speech && !utt_started) {
utt_started = TRUE;
printf("Listening...\n");
}
if (!in_speech && utt_started) {
/* speech -> silence transition, time to start new utterance */
ps_end_utt(ps);
hyp = ps_get_hyp(ps, NULL );
if (hyp != NULL)
printf("%s\n", hyp);
if (ps_start_utt(ps) < 0)
E_FATAL("Failed to start utterance\n");
utt_started = FALSE;
printf("READY....\n");
}
sleep_msec(100);
}
ad_close(ad);
}
/*
* Record A/D data for approximately specified number of seconds into specified file.
*/
int
main (int32 argc, char *argv[])
{
char line[1024];
ad_rec_t *ad;
int16 buf[1000];
int32 len, k, sps;
FILE *fp;
if ((argc != 4) ||
(sscanf (argv[1], "%d", &sps) != 1) ||
(sscanf (argv[2], "%d", &len) != 1)) {
E_FATAL("Usage: %s <sampling-rate> <#sec-to-record> <output-file>\n", argv[0]);
}
if ((fp = fopen (argv[3], "wb")) == NULL)
E_FATAL("fopen(%s,wb) failed\n", argv[3]);
len *= sps; /* Convert to min. #samples to record */
if ((ad = ad_open_sps (sps)) == NULL)
E_FATAL("ad_open_sps(%d) failed\n", sps);
printf ("Hit <CR> to start recording\n");
fgets (line, sizeof(line), stdin);
ad_start_rec (ad);
/* Record desired no. of samples */
while (len > 0) {
/* Read A/D */
if ((k = ad_read (ad, buf, 1000)) < 0)
E_FATAL("ad_read returned %d\n", k);
/* Write data read, if any, to file (ad_read may return 0 samples) */
if (k > 0) {
fwrite (buf, sizeof(int16), k, fp);
fflush (fp);
len -= k;
}
}
ad_stop_rec (ad);
ad_close (ad);
fclose (fp);
return 0;
}
/*
* Halt a DMA in progress.
*/
int
ad1848_halt_output(void *addr)
{
struct ad1848_softc *sc = addr;
u_char reg;
DPRINTF(("ad1848: ad1848_halt_output\n"));
mtx_enter(&audio_lock);
reg = ad_read(sc, SP_INTERFACE_CONFIG);
ad_write(sc, SP_INTERFACE_CONFIG, (reg & ~PLAYBACK_ENABLE));
if (sc->sc_playrun == 1) {
isa_dmaabort(sc->sc_isa, sc->sc_drq);
sc->sc_playrun = 0;
}
mtx_leave(&audio_lock);
return 0;
}
int
ad1848_halt_input(void *addr)
{
struct ad1848_softc *sc = addr;
u_char reg;
DPRINTF(("ad1848: ad1848_halt_input\n"));
reg = ad_read(sc, SP_INTERFACE_CONFIG);
ad_write(sc, SP_INTERFACE_CONFIG, (reg & ~CAPTURE_ENABLE));
if (sc->sc_recrun == 1) {
isa_dmaabort(sc->sc_isa, sc->sc_recdrq);
sc->sc_recrun = 0;
}
return 0;
}
uint32 FSpeechRecognitionWorker::Run() {
char const *hyp;
// attempt to open the default recording device
if ((ad = ad_open_dev(cmd_ln_str_r(config, "-adcdev"),
(int)cmd_ln_float32_r(config,
"-samprate"))) == NULL) {
ClientMessage(FString(TEXT("Failed to open audio device")));
return 1;
}
if (ad_start_rec(ad) < 0) {
ClientMessage(FString(TEXT("Failed to start recording")));
return 2;
}
if (ps_start_utt(ps) < 0) {
ClientMessage(FString(TEXT("Failed to start utterance")));
return 3;
}
while (StopTaskCounter.GetValue() == 0) {
if ((k = ad_read(ad, adbuf, 1024)) < 0)
ClientMessage(FString(TEXT("Failed to read audio")));
ps_process_raw(ps, adbuf, k, 0, 0);
in_speech = ps_get_in_speech(ps);
if (in_speech && !utt_started) {
utt_started = 1;
}
if (!in_speech && utt_started) {
/* speech -> silence transition, time to start new utterance */
ps_end_utt(ps);
hyp = ps_get_hyp(ps, NULL);
if (hyp != NULL)
Manager->WordSpoken_method(FString(hyp));
if (ps_start_utt(ps) < 0)
ClientMessage(FString(TEXT("Failed to start")));
utt_started = 0;
}
}
ad_close(ad);
return 0;
}
int processCommands()
{
int32 samples;
int16 audioBuf[BUFFER_SIZE];
char const *uttid;
char const *hyp;
while(run)
{
printf("Waiting for utterance...\n");
samples = waitForNextUtterance();
if(samples < 0)
return -1;
if(ps_start_utt(psDecoder, NULL) < 0) {
fprintf(stderr, "Failed to start next utterance\n");
return -1;
}
ps_process_raw(psDecoder, audioBuf, samples, FALSE, FALSE);
printf("Recording...\n");
fflush(stdout);
record();
ad_stop_rec(audioDevice);
while(ad_read(audioDevice, audioBuf, BUFFER_SIZE) >= 0);
cont_ad_reset(continousAudoDevice);
ps_end_utt(psDecoder);
hyp = ps_get_hyp(psDecoder, NULL, &uttid);
printf("Heard: %s\n", hyp);
if (ad_start_rec(audioDevice) < 0) {
fprintf(stderr, "Failed to start audio device.\n");
return -1;
}
}
return 0;
}
int
ad1848_open(void *addr, int flags)
{
struct ad1848_softc *sc = addr;
DPRINTF(("ad1848_open: sc=%p\n", sc));
sc->sc_pintr = sc->sc_parg = NULL;
sc->sc_rintr = sc->sc_rarg = NULL;
/* Enable interrupts */
DPRINTF(("ad1848_open: enable intrs\n"));
ad_write(sc, SP_PIN_CONTROL,
INTERRUPT_ENABLE | ad_read(sc, SP_PIN_CONTROL));
#ifdef AUDIO_DEBUG
if (ad1848debug > 2)
ad1848_dump_regs(sc);
#endif
return 0;
}
void
ad1848_reset(struct ad1848_softc *sc)
{
u_char r;
DPRINTF(("ad1848_reset\n"));
/* Clear the PEN and CEN bits */
r = ad_read(sc, SP_INTERFACE_CONFIG);
r &= ~(CAPTURE_ENABLE | PLAYBACK_ENABLE);
ad_write(sc, SP_INTERFACE_CONFIG, r);
/* Clear interrupt status */
if (sc->mode == 2)
ad_write(sc, CS_IRQ_STATUS, 0);
ADWRITE(sc, AD1848_STATUS, 0);
#ifdef AUDIO_DEBUG
if (ad1848debug > 2)
ad1848_dump_regs(sc);
#endif
}
/*
* side-effects: allocates buffer
*/
ssize_t ad_read_mono_dbl(void *sf, struct adinfo *nfo, double* d, size_t len){
unsigned int c,f;
unsigned int chn = nfo->channels;
if (len<1) return 0;
static float *buf = NULL;
static size_t bufsiz = 0;
if (!buf || bufsiz != len*chn) {
bufsiz=len*chn;
buf = (float*) realloc((void*)buf, bufsiz * sizeof(float));
}
len = ad_read(sf, buf, bufsiz);
for (f=0;f< (len/chn);f++) {
double val=0.0;
for (c=0;c<chn;c++) {
val+=buf[f*chn + c];
}
d[f]= val/chn;
}
return len/chn;
}
double ad_maxsignal(const char *fn) {
struct adinfo nfo;
void * sf = ad_open(fn, &nfo);
if (!sf) return 0.0;
int read_len = 1024 * nfo.channels;
float* sf_data = malloc(sizeof(float) * read_len);
int readcount;
float max_val = 0.0;
do {
readcount = ad_read(sf, sf_data, read_len);
int k;
for (k = 0; k < readcount; k++){
const float temp = fabs (sf_data [k]);
max_val = temp > max_val ? temp : max_val;
};
} while (readcount > 0);
ad_close(sf);
free(sf_data);
ad_free_nfo(&nfo);
return max_val;
}
/*
* Main utterance processing loop:
* for (;;) {
* wait for start of next utterance;
* decode utterance until silence of at least 1 sec observed;
* print utterance result;
* }
*/
static void
recognize_from_microphone()
{
ad_rec_t *ad;
int16 adbuf[4096];
int32 k, ts, rem;
char const *hyp;
char const *uttid;
cont_ad_t *cont;
char word[256];
char c1[256], c2[256];
int tracking = 0;
int halted = 0;
int LEFT = 0;
int RIGHT = 1;
int MOVE_CENT = 100; //1 meter
int numwords;
setlinebuf(stdout);
if ((ad = ad_open_dev(cmd_ln_str_r(config, "-adcdev"),
(int)cmd_ln_float32_r(config, "-samprate"))) == NULL)
E_FATAL("Failed to open audio device\n");
/* Initialize continuous listening module */
if ((cont = cont_ad_init(ad, ad_read)) == NULL)
E_FATAL("Failed to initialize voice activity detection\n");
if (ad_start_rec(ad) < 0)
E_FATAL("Failed to start recording\n");
if (cont_ad_calib(cont) < 0)
E_FATAL("Failed to calibrate voice activity detection\n");
printf("LEDON BLUE\n");
for (;;) {
/* Indicate listening for next utterance */
fprintf(stderr, "READY....\n");
fflush(stderr);
/* Wait data for next utterance */
while ((k = cont_ad_read(cont, adbuf, 4096)) == 0)
sleep_msec(100);
if (k < 0)
E_FATAL("Failed to read audio\n");
/*
* Non-zero amount of data received; start recognition of new utterance.
* NULL argument to uttproc_begin_utt => automatic generation of utterance-id.
*/
if (ps_start_utt(ps, NULL) < 0)
E_FATAL("Failed to start utterance\n");
ps_process_raw(ps, adbuf, k, FALSE, FALSE);
fprintf(stderr, "Listening...\n");
/* Note timestamp for this first block of data */
ts = cont->read_ts;
/* Decode utterance until end (marked by a "long" silence, >1sec) */
for (;;) {
/* Read non-silence audio data, if any, from continuous listening module */
if ((k = cont_ad_read(cont, adbuf, 4096)) < 0)
E_FATAL("Failed to read audio\n");
if (k == 0) {
/*
* No speech data available; check current timestamp with most recent
* speech to see if more than 1 sec elapsed. If so, end of utterance.
*/
if ((cont->read_ts - ts) > DEFAULT_SAMPLES_PER_SEC)
break;
}
else {
/* New speech data received; note current timestamp */
ts = cont->read_ts;
}
/*
* Decode whatever data was read above.
*/
rem = ps_process_raw(ps, adbuf, k, FALSE, FALSE);
/* If no work to be done, sleep a bit */
if ((rem == 0) && (k == 0))
sleep_msec(20);
}
/*
* Utterance ended; flush any accumulated, unprocessed A/D data and stop
* listening until current utterance completely decoded
*/
ad_stop_rec(ad);
while (ad_read(ad, adbuf, 4096) >= 0);
cont_ad_reset(cont);
fprintf(stderr, "Stopped listening, please wait...\n");
fflush(stdout);
/* Finish decoding, obtain and print result */
ps_end_utt(ps);
hyp = ps_get_hyp(ps, NULL, &uttid);
fprintf(stderr, "%s: %s\n", uttid, hyp);
/* Exit if the first word spoken was GOODBYE */
if (hyp) {
numwords = sscanf(hyp, "%s %s %s", word, c1, c2);
if(strcmp(word, "GUGGUG") == 0) {
if(strcmp(c1, "HALT") == 0) {
printf("LEDOFF BLUE\n");
halted = 1;
} else if(strcmp(c1, "RESUME") == 0) {
printf("LEDON BLUE\n");
halted = 0;
}
if(strcmp(c1, "BEGIN") == 0 || strcmp(c1, "START") == 0) {
if(strcmp(c2, "TRACKING") == 0 && !tracking) {
printf("START TRACKING\n");
tracking = 1;
halted = 0;
}
} else if(strcmp(c1, "STOP") == 0) {
if(strcmp(c2, "TRACKING") == 0 && tracking) {
printf("STOP TRACKING\n");
tracking = 0;
}
}
if(!tracking && !halted && numwords == 3) {
if(strcmp(c1, "TURN") == 0) {
if(strcmp(c2, "AROUND") == 0) {
printf("TURN %d 180\n", LEFT);
} else if(strcmp(c2, "LEFT") == 0) {
printf("TURN %d 90\n", LEFT);
} else if(strcmp(c2, "RIGHT") == 0) {
printf("TURN %d 90\n", RIGHT);
}
} else if(strcmp(c1, "MOVE") == 0) {
if(strcmp(c2, "FORWARD") == 0) {
printf("MOVE 0 %d\n", MOVE_CENT);
} else if(strcmp(c2, "BACKWARD") == 0) {
printf("MOVE 1 %d\n", MOVE_CENT);
}
}
}
}
}
/* Resume A/D recording for next utterance */
if (ad_start_rec(ad) < 0)
E_FATAL("Failed to start recording\n");
}
cont_ad_close(cont);
ad_close(ad);
}