/**
* Process a buffer of audio data for call progress tones
*
* @param bug the session's media bug
* @param user_data the detector
* @param type the type of data available from the bug
* @return SWITCH_TRUE
*/
static switch_bool_t callprogress_detector_process_buffer(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
{
uint8_t data[SWITCH_RECOMMENDED_BUFFER_SIZE];
switch_frame_t frame = { 0 };
tone_detector_t *detector = (tone_detector_t *)user_data;
switch_core_session_t *session = switch_core_media_bug_get_session(bug);
switch_channel_t *channel = switch_core_session_get_channel(session);
frame.data = data;
frame.buflen = SWITCH_RECOMMENDED_BUFFER_SIZE;
switch(type) {
case SWITCH_ABC_TYPE_INIT:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "(%s) initializing tone detector\n", switch_channel_get_name(channel));
tone_detector_init(detector);
break;
case SWITCH_ABC_TYPE_READ:
{
const char *detected_tone = NULL;
if (!detector->spandsp_detector) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "(%s) detector is destroyed\n", switch_channel_get_name(channel));
return SWITCH_FALSE;
}
if (switch_core_media_bug_read(bug, &frame, SWITCH_TRUE) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "(%s) error reading frame\n", switch_channel_get_name(channel));
return SWITCH_FALSE;
}
tone_detector_process_buffer(detector, frame.data, frame.samples, &detected_tone);
if (detected_tone) {
switch_event_t *event = NULL;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "(%s) DETECTED TONE: %s\n", switch_channel_get_name(channel), detected_tone);
if (switch_event_create(&event, SWITCH_EVENT_DETECTED_TONE) == SWITCH_STATUS_SUCCESS) {
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Detected-Tone", detected_tone);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Unique-ID", switch_core_session_get_uuid(session));
switch_event_fire(&event);
}
}
break;
}
case SWITCH_ABC_TYPE_WRITE:
break;
case SWITCH_ABC_TYPE_WRITE_REPLACE:
break;
case SWITCH_ABC_TYPE_READ_REPLACE:
break;
case SWITCH_ABC_TYPE_READ_PING:
break;
case SWITCH_ABC_TYPE_CLOSE:
if (detector->spandsp_detector) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "(%s) destroying tone detector\n", switch_channel_get_name(channel));
tone_detector_destroy(detector);
}
break;
}
return SWITCH_TRUE;
}
/**
* Process a buffer of audio data for call progress tones
*
* @param bug the session's media bug
* @param user_data the detector
* @param type the type of data available from the bug
* @return SWITCH_TRUE
*/
static switch_bool_t callprogress_detector_process_buffer(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
{
tone_detector_t *detector = (tone_detector_t *)user_data;
switch_core_session_t *session = detector->session;
switch(type) {
case SWITCH_ABC_TYPE_INIT:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "initializing tone detector\n");
tone_detector_init(detector);
break;
case SWITCH_ABC_TYPE_READ_REPLACE:
{
switch_frame_t *frame;
const char *detected_tone = NULL;
if (!detector->spandsp_detector) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "detector is destroyed\n");
return SWITCH_FALSE;
}
if (!(frame = switch_core_media_bug_get_read_replace_frame(bug))) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "error reading frame\n");
return SWITCH_FALSE;
}
tone_detector_process_buffer(detector, frame->data, frame->samples, &detected_tone);
if (detected_tone) {
switch_event_t *event = NULL;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "DETECTED TONE: %s\n", detected_tone);
if (switch_event_create(&event, SWITCH_EVENT_DETECTED_TONE) == SWITCH_STATUS_SUCCESS) {
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Detected-Tone", detected_tone);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Unique-ID", switch_core_session_get_uuid(session));
switch_event_fire(&event);
}
}
break;
}
case SWITCH_ABC_TYPE_CLOSE:
if (detector->spandsp_detector) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "destroying tone detector\n");
tone_detector_destroy(detector);
}
break;
default:
break;
}
return SWITCH_TRUE;
}
