/** Create demo synthesizer channel */
static mrcp_channel_t* synth_application_channel_create(mrcp_session_t *session)
{
mrcp_channel_t *channel;
mpf_termination_t *termination;
/* create channel */
synth_app_channel_t *synth_channel = apr_palloc(session->pool,sizeof(synth_app_channel_t));
synth_channel->audio_out = NULL;
/* create audio stream */
synth_channel->audio_stream = mpf_audio_stream_create(
synth_channel, /* object to associate */
&audio_stream_vtable, /* virtual methods table of audio stream */
STREAM_MODE_SEND, /* stream mode/direction */
session->pool); /* memory pool to allocate memory from */
/* create raw termination */
termination = mpf_raw_termination_create(
NULL, /* no object to associate */
synth_channel->audio_stream, /* audio stream */
NULL, /* no video stream */
session->pool); /* memory pool to allocate memory from */
channel = mrcp_application_channel_create(
session, /* session, channel belongs to */
MRCP_SYNTHESIZER_RESOURCE, /* MRCP resource identifier */
termination, /* media termination, used to terminate audio stream */
NULL, /* RTP descriptor, used to create RTP termination (NULL by default) */
synth_channel); /* object to associate */
return channel;
}
mrcp_channel_t* UmcSession::CreateMrcpChannel(
mrcp_resource_id resource_id,
mpf_termination_t* pTermination,
mpf_rtp_termination_descriptor_t* pRtpDescriptor,
void* pObj)
{
return mrcp_application_channel_create(
m_pMrcpSession, /* session, channel belongs to */
resource_id, /* MRCP resource identifier */
pTermination, /* media termination, used to terminate audio stream */
NULL, /* RTP descriptor, used to create RTP termination (NULL by default) */
pObj); /* object to associate */
}
/** Create demo channel */
static mrcp_channel_t* demo_application_channel_create(mrcp_session_t *session)
{
mrcp_channel_t *channel;
/* create channel */
demo_app_channel_t *demo_channel = apr_palloc(session->pool,sizeof(demo_app_channel_t));
mpf_rtp_termination_descriptor_t *rtp_descriptor = demo_rtp_descriptor_create(session->pool);
channel = mrcp_application_channel_create(
session, /* session, channel belongs to */
MRCP_SYNTHESIZER_RESOURCE, /* MRCP resource identifier */
NULL, /* no termination (not to use internal media processing) */
rtp_descriptor, /* RTP descriptor, used to create RTP termination */
demo_channel); /* object to associate */
return channel;
}
/** Create demo recognizer channel */
static mrcp_channel_t* recog_application_channel_create(mrcp_session_t *session)
{
mrcp_channel_t *channel;
mpf_termination_t *termination;
mpf_stream_capabilities_t *capabilities;
/* create channel */
recog_app_channel_t *recog_channel = apr_palloc(session->pool,sizeof(recog_app_channel_t));
recog_channel->streaming = FALSE;
recog_channel->audio_in = NULL;
recog_channel->time_to_complete = 0;
/* create source stream capabilities */
capabilities = mpf_source_stream_capabilities_create(session->pool);
/* add codec capabilities (Linear PCM) */
mpf_codec_capabilities_add(
&capabilities->codecs,
MPF_SAMPLE_RATE_8000 | MPF_SAMPLE_RATE_16000,
"LPCM");
#if 0
/* more capabilities can be added or replaced */
mpf_codec_capabilities_add(
&capabilities->codecs,
MPF_SAMPLE_RATE_8000 | MPF_SAMPLE_RATE_16000,
"PCMU");
#endif
termination = mrcp_application_audio_termination_create(
session, /* session, termination belongs to */
&audio_stream_vtable, /* virtual methods table of audio stream */
capabilities, /* capabilities of audio stream */
recog_channel); /* object to associate */
channel = mrcp_application_channel_create(
session, /* session, channel belongs to */
MRCP_RECOGNIZER_RESOURCE, /* MRCP resource identifier */
termination, /* media termination, used to terminate audio stream */
NULL, /* RTP descriptor, used to create RTP termination (NULL by default) */
recog_channel); /* object to associate */
return channel;
}
/** Create demo synthesizer channel */
static mrcp_channel_t* synth_application_channel_create(mrcp_session_t *session)
{
mrcp_channel_t *channel;
mpf_termination_t *termination;
mpf_stream_capabilities_t *capabilities;
apr_pool_t *pool = mrcp_application_session_pool_get(session);
/* create channel */
synth_app_channel_t *synth_channel = apr_palloc(pool,sizeof(synth_app_channel_t));
synth_channel->audio_out = NULL;
/* create sink stream capabilities */
capabilities = mpf_sink_stream_capabilities_create(pool);
/* add codec capabilities (Linear PCM) */
mpf_codec_capabilities_add(
&capabilities->codecs,
MPF_SAMPLE_RATE_8000 | MPF_SAMPLE_RATE_16000,
"LPCM");
#if 0
/* more capabilities can be added or replaced */
mpf_codec_capabilities_add(
&capabilities->codecs,
MPF_SAMPLE_RATE_8000 | MPF_SAMPLE_RATE_16000,
"PCMU");
#endif
termination = mrcp_application_audio_termination_create(
session, /* session, termination belongs to */
&audio_stream_vtable, /* virtual methods table of audio stream */
capabilities, /* capabilities of audio stream */
synth_channel); /* object to associate */
channel = mrcp_application_channel_create(
session, /* session, channel belongs to */
MRCP_SYNTHESIZER_RESOURCE, /* MRCP resource identifier */
termination, /* media termination, used to terminate audio stream */
NULL, /* RTP descriptor, used to create RTP termination (NULL by default) */
synth_channel); /* object to associate */
return channel;
}
/** \brief Create recognition channel */
static apt_bool_t uni_recog_channel_create(uni_speech_t *uni_speech, ast_format_compat *format)
{
mrcp_channel_t *channel;
mpf_termination_t *termination;
mpf_stream_capabilities_t *capabilities;
apr_pool_t *pool = mrcp_application_session_pool_get(uni_speech->session);
/* Create source stream capabilities */
capabilities = mpf_source_stream_capabilities_create(pool);
/* Add codec capabilities (Linear PCM) */
mpf_codec_capabilities_add(
&capabilities->codecs,
MPF_SAMPLE_RATE_8000,
"LPCM");
/* Create media termination */
termination = mrcp_application_audio_termination_create(
uni_speech->session, /* session, termination belongs to */
&audio_stream_vtable, /* virtual methods table of audio stream */
capabilities, /* stream capabilities */
uni_speech); /* object to associate */
/* Create MRCP channel */
channel = mrcp_application_channel_create(
uni_speech->session, /* session, channel belongs to */
MRCP_RECOGNIZER_RESOURCE, /* MRCP resource identifier */
termination, /* media termination, used to terminate audio stream */
NULL, /* RTP descriptor, used to create RTP termination (NULL by default) */
uni_speech); /* object to associate */
if(!channel) {
return FALSE;
}
uni_speech->channel = channel;
return TRUE;
}
/** Create ASR session */
ASR_CLIENT_DECLARE(asr_session_t*) asr_session_create(asr_engine_t *engine, const char *profile)
{
mpf_termination_t *termination;
mrcp_channel_t *channel;
mrcp_session_t *session;
const mrcp_app_message_t *app_message;
apr_pool_t *pool;
asr_session_t *asr_session;
mpf_stream_capabilities_t *capabilities;
/* create session */
session = mrcp_application_session_create(engine->mrcp_app,profile,NULL);
if(!session) {
return NULL;
}
pool = mrcp_application_session_pool_get(session);
asr_session = apr_palloc(pool,sizeof(asr_session_t));
mrcp_application_session_object_set(session,asr_session);
/* create source stream capabilities */
capabilities = mpf_source_stream_capabilities_create(pool);
/* add codec capabilities (Linear PCM) */
mpf_codec_capabilities_add(
&capabilities->codecs,
MPF_SAMPLE_RATE_8000,
"LPCM");
termination = mrcp_application_audio_termination_create(
session, /* session, termination belongs to */
&audio_stream_vtable, /* virtual methods table of audio stream */
capabilities, /* capabilities of audio stream */
asr_session); /* object to associate */
channel = mrcp_application_channel_create(
session, /* session, channel belongs to */
MRCP_RECOGNIZER_RESOURCE, /* MRCP resource identifier */
termination, /* media termination, used to terminate audio stream */
NULL, /* RTP descriptor, used to create RTP termination (NULL by default) */
asr_session); /* object to associate */
if(!channel) {
mrcp_application_session_destroy(session);
return NULL;
}
asr_session->engine = engine;
asr_session->mrcp_session = session;
asr_session->mrcp_channel = channel;
asr_session->recog_complete = NULL;
asr_session->input_mode = INPUT_MODE_NONE;
asr_session->streaming = FALSE;
asr_session->audio_in = NULL;
asr_session->media_buffer = NULL;
asr_session->mutex = NULL;
asr_session->wait_object = NULL;
asr_session->app_message = NULL;
/* Create cond wait object and mutex */
apr_thread_mutex_create(&asr_session->mutex,APR_THREAD_MUTEX_DEFAULT,pool);
apr_thread_cond_create(&asr_session->wait_object,pool);
/* Create media buffer */
asr_session->media_buffer = mpf_frame_buffer_create(160,20,pool);
/* Send add channel request and wait for the response */
apr_thread_mutex_lock(asr_session->mutex);
app_message = NULL;
if(mrcp_application_channel_add(asr_session->mrcp_session,asr_session->mrcp_channel) == TRUE) {
apr_thread_cond_wait(asr_session->wait_object,asr_session->mutex);
app_message = asr_session->app_message;
asr_session->app_message = NULL;
}
apr_thread_mutex_unlock(asr_session->mutex);
if(sig_response_check(app_message) == FALSE) {
asr_session_destroy_ex(asr_session,TRUE);
return NULL;
}
return asr_session;
}
int main(int argc, char const* argv[])
{
apr_pool_t* pool = NULL;
apr_pool_t* spool = NULL;
int i;
struct iovec cattext[101];
static char const SP = ' ';
char const* outfile;
apr_status_t status;
apt_dir_layout_t* dirLayout = NULL;
mrcp_client_t* client = NULL;
mrcp_application_t* app = NULL;
mrcp_session_t* sess = NULL;
mpf_stream_capabilities_t* caps = NULL;
mpf_termination_t* term = NULL;
mrcp_channel_t* chan = NULL;
struct stat info;
if (argc < 2) {
puts("Usage:");
printf("\t%s \"This is a synthetic voice.\"", argv[0]);
exit(1);
}
/* Just detect various directory layout constellations */
if (stat(ROOT_DIR, &info))
ROOT_DIR = ROOT_DIR2;
if (stat(ROOT_DIR, &info))
ROOT_DIR = ROOT_DIR3;
/* Initialize platform first */
if (apr_initialize() != APR_SUCCESS) FAIL("Cannot initialize APR platform");
pool = apt_pool_create();
if (!pool) FAIL("Not enough memory");
for (i = 0; (i < argc - 2) && (i < 50); i += 2) {
cattext[2 * i].iov_base = (void*) argv[i + 1];
cattext[2 * i].iov_len = strlen(argv[i + 1]);
cattext[2 * i + 1].iov_base = (void*) &SP;
cattext[2 * i + 1].iov_len = 1;
}
cattext[2 * i].iov_base = (void*) argv[i + 1];
cattext[2 * i].iov_len = strlen(argv[i + 1]);
text = apr_pstrcatv(pool, cattext, 2 * i + 1, NULL);
if (!text) FAIL("Not enough memory");
outfile = apr_pstrcat(pool, ROOT_DIR, "/data/", PCM_OUT_FILE, NULL);
printf("This is a sample C UniMRCP client synthesizer scenario.\n");
printf("Use client configuration from %s/conf/unimrcpclient.xml\n", ROOT_DIR);
printf("Use profile %s\n", MRCP_PROFILE);
printf("Synthesize text: `%s'\n", text);
printf("Write output to file: %s\n", outfile);
printf("\n");
printf("Press enter to start the session...\n");
(void) getchar();
apt_log_instance_create(APT_LOG_OUTPUT_NONE, APT_PRIO_DEBUG, pool);
apt_log_ext_handler_set(UniSynth_logger);
dirLayout = apt_default_dir_layout_create(ROOT_DIR, pool);
/* Create and start the client in a root dir */
client = unimrcp_client_create(dirLayout);
if (!client) FAIL("Cannot create UniMRCP client");
app = mrcp_application_create(UniSynthAppMsgHandler, NULL, mrcp_client_memory_pool_get(client));
if (!app) FAIL("Cannot create MRCP application");
if (!mrcp_client_application_register(client, app, "Sample C app"))
FAIL("Cannot register MRCP application");
if (!mrcp_client_start(client)) FAIL("Cannot start MRCP client");
/* Create a session using MRCP profile MRCP_PROFILE */
sess = mrcp_application_session_create(app, MRCP_PROFILE, NULL);
if (!sess) FAIL("Cannot create session");
spool = mrcp_application_session_pool_get(sess);
/* Create audio termination with capabilities */
caps = mpf_stream_capabilities_create(STREAM_DIRECTION_SEND, spool);
if (!caps) FAIL("Error creating capabilities");
if (!mpf_codec_capabilities_add(&caps->codecs, MPF_SAMPLE_RATE_8000, "LPCM"))
FAIL("Error adding codec capabilities");
term = mrcp_application_audio_termination_create(sess, &stream_vtable, caps, NULL);
if (!term) FAIL("Cannot create audio termination");
/* Add signaling channel (and start processing in OnAdd method */
f = fopen(outfile, "wb");
if (!f) FAIL("Cannot open output file");
status = apr_thread_mutex_create(&mutex, APR_THREAD_MUTEX_DEFAULT, pool);
if (status != APR_SUCCESS) FAIL("Cannot create mutex");
status = apr_thread_cond_create(&cond, pool);
if (status != APR_SUCCESS) FAIL("Cannot create condition variable");
chan = mrcp_application_channel_create(sess, MRCP_SYNTHESIZER_RESOURCE, term, NULL, NULL);
if (!chan) FAIL("Cannot create channel");
if (!mrcp_application_channel_add(sess, chan))
FAIL("Cannot add channel");
/* Now wait until the processing finishes */
apr_thread_mutex_lock(mutex);
while (err < 0) apr_thread_cond_wait(cond, mutex);
apr_thread_mutex_unlock(mutex);
cleanup:
if (sess) mrcp_application_session_terminate(sess);
if (f) fclose(f);
if (client) mrcp_client_shutdown(client);
if (app) mrcp_application_destroy(app);
if (client) mrcp_client_destroy(client);
apt_log_instance_destroy();
if (pool) apr_pool_destroy(pool);
apr_terminate();
puts("Program finished, memory released. Press any key to exit.");
(void) getchar();
return err;
}
/* Open the speech channel. */
int speech_channel_open(speech_channel_t *schannel, ast_mrcp_profile_t *profile)
{
int status = 0;
mpf_termination_t *termination = NULL;
mrcp_resource_type_e resource_type;
if ((schannel == NULL) || (profile == NULL))
return -1;
if (schannel->mutex != NULL)
apr_thread_mutex_lock(schannel->mutex);
/* Make sure we can open channel. */
if (schannel->state != SPEECH_CHANNEL_CLOSED) {
if (schannel->mutex != NULL)
apr_thread_mutex_unlock(schannel->mutex);
return -1;
}
schannel->profile = profile;
/* Create MRCP session. */
if ((schannel->unimrcp_session = mrcp_application_session_create(schannel->application->app, profile->name, schannel)) == NULL) {
/* Profile doesn't exist? */
ast_log(LOG_ERROR, "(%s) Unable to create session with %s\n", schannel->name, profile->name);
if (schannel->mutex != NULL)
apr_thread_mutex_unlock(schannel->mutex);
return 2;
}
/* Set session name for logging purposes. */
mrcp_application_session_name_set(schannel->unimrcp_session, schannel->name);
/* Create audio termination and add to channel. */
if ((termination = speech_channel_create_mpf_termination(schannel)) == NULL) {
ast_log(LOG_ERROR, "(%s) Unable to create termination with %s\n", schannel->name, profile->name);
if (!mrcp_application_session_destroy(schannel->unimrcp_session))
ast_log(LOG_WARNING, "(%s) Unable to destroy application session for %s\n", schannel->name, profile->name);
if (schannel->mutex != NULL)
apr_thread_mutex_unlock(schannel->mutex);
return -1;
}
if (schannel->type == SPEECH_CHANNEL_SYNTHESIZER)
resource_type = MRCP_SYNTHESIZER_RESOURCE;
else
resource_type = MRCP_RECOGNIZER_RESOURCE;
if ((schannel->unimrcp_channel = mrcp_application_channel_create(schannel->unimrcp_session, resource_type, termination, NULL, schannel)) == NULL) {
ast_log(LOG_ERROR, "(%s) Unable to create channel with %s\n", schannel->name, profile->name);
if (!mrcp_application_session_destroy(schannel->unimrcp_session))
ast_log(LOG_WARNING, "(%s) Unable to destroy application session for %s\n", schannel->name, profile->name);
if (schannel->mutex != NULL)
apr_thread_mutex_unlock(schannel->mutex);
return -1;
}
/* Add channel to session. This establishes the connection to the MRCP server. */
if (mrcp_application_channel_add(schannel->unimrcp_session, schannel->unimrcp_channel) != TRUE) {
ast_log(LOG_ERROR, "(%s) Unable to add channel to session with %s\n", schannel->name, profile->name);
if (!mrcp_application_session_destroy(schannel->unimrcp_session))
ast_log(LOG_WARNING, "(%s) Unable to destroy application session for %s\n", schannel->name, profile->name);
if (schannel->mutex != NULL)
apr_thread_mutex_unlock(schannel->mutex);
return -1;
}
/* Wait for channel to be ready. */
while ((schannel->mutex != NULL) && (schannel->cond != NULL) && (schannel->state == SPEECH_CHANNEL_CLOSED))
apr_thread_cond_timedwait(schannel->cond, schannel->mutex, SPEECH_CHANNEL_TIMEOUT_USEC);
if (schannel->state == SPEECH_CHANNEL_READY) {
ast_log(LOG_DEBUG, "(%s) channel is ready\n", schannel->name);
} else if (schannel->state == SPEECH_CHANNEL_CLOSED) {
ast_log(LOG_ERROR, "(%s) Timed out waiting for channel to be ready\n", schannel->name);
/* Can't retry. */
status = -1;
} else if (schannel->state == SPEECH_CHANNEL_ERROR) {
/* Wait for session to be cleaned up. */
if (schannel->cond != NULL)
apr_thread_cond_timedwait(schannel->cond, schannel->mutex, SPEECH_CHANNEL_TIMEOUT_USEC);
if (schannel->state != SPEECH_CHANNEL_CLOSED) {
/* Major issue. Can't retry. */
status = -1;
} else {
/* Failed to open profile, retry is allowed. */
status = 2;
}
}
if (schannel->type == SPEECH_CHANNEL_RECOGNIZER) {
recognizer_data_t *r = (recognizer_data_t *)apr_palloc(schannel->pool, sizeof(recognizer_data_t));
if (r != NULL) {
schannel->data = r;
memset(r, 0, sizeof(recognizer_data_t));
if ((r->grammars = apr_hash_make(schannel->pool)) == NULL) {
ast_log(LOG_ERROR, "Unable to allocate hash for grammars\n");
status = -1;
}
} else {
ast_log(LOG_ERROR, "Unable to allocate recognizer data structure\n");
status = -1;
}
}
if (schannel->mutex != NULL)
apr_thread_mutex_unlock(schannel->mutex);
return status;
}