SWITCH_MODULE_LOAD_FUNCTION(mod_soundtouch_load);
SWITCH_MODULE_DEFINITION(mod_soundtouch, mod_soundtouch_load, NULL, NULL);
+static const float ADJUST_AMOUNT = 0.05f;
struct soundtouch_helper {
SoundTouch *st;
switch_core_session_t *session;
- int send;
- int read;
+ bool send_not_recv;
+ bool hook_dtmf;
float pitch;
- float octaves;
- float semi;
float rate;
float tempo;
- int literal;
+ bool literal;
};
+/* type is p=>pitch,r=>rate,t=>tempo */
+static float normalize_soundtouch_value(char type, float value)
+{
+ float min,max;
+ switch(type)
+ {
+ case 'p':
+ min = 0.01f;
+ max = 1000.0f;
+ break;
+ case 'r':
+ min = 0.01f;
+ max = 1000.0f;
+ break;
+ case 't':
+ min = 0.01f;
+ max = 1000.0f;
+ break;
+ }
+ if (value < min)
+ value = min;
+ if (value > max)
+ value = max;
+ return value;
+}
+
+/*Computation taken from SoundTouch library for conversion*/
+static float compute_pitch_from_octaves(float octaves)
+{
+ return (float)exp(0.69314718056f * octaves);
+}
+
static switch_status_t on_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf, switch_dtmf_direction_t direction)
{
switch_media_bug_t *bug;
switch_channel_t *channel = switch_core_session_get_channel(session);
-
if ((bug = (switch_media_bug_t *) switch_channel_get_private(channel, "_soundtouch_"))) {
struct soundtouch_helper *sth = (struct soundtouch_helper *) switch_core_media_bug_get_user_data(bug);
if (sth) {
if (sth->literal) {
- sth->literal = 0;
+ sth->literal = false;
return SWITCH_STATUS_SUCCESS;
}
switch (dtmf->digit) {
case '*':
- sth->literal++;
+ sth->literal=true;
break;
- case '3':
- sth->semi += .5;
- sth->st->setPitchSemiTones(sth->semi);
- sth->st->flush();
+
+ case '1':
+ sth->pitch = normalize_soundtouch_value('p',sth->pitch - ADJUST_AMOUNT);
+ sth->st->setPitch(sth->pitch);
break;
case '2':
- sth->semi = 0;
- sth->st->setPitchSemiTones(sth->semi);
- sth->st->flush();
+ sth->pitch = 1.0f;
+ sth->st->setPitch(sth->pitch);
break;
- case '1':
- sth->semi -= .5;
- sth->st->setPitchSemiTones(sth->semi);
- sth->st->flush();
+ case '3':
+ sth->pitch = normalize_soundtouch_value('p',sth->pitch + ADJUST_AMOUNT);
+ sth->st->setPitch(sth->pitch);
break;
- case '6':
- sth->pitch += .2;
- sth->st->setPitch(sth->pitch);
- sth->st->flush();
+ case '4':
+ sth->rate = normalize_soundtouch_value('r',sth->rate - ADJUST_AMOUNT);
+ sth->st->setRate(sth->rate);
break;
case '5':
- sth->pitch = 1;
- sth->st->setPitch(sth->pitch);
- sth->st->flush();
+ sth->rate = 1.0f;
+ sth->st->setRate(sth->rate);
break;
- case '4':
- sth->pitch -= .2;
- if (sth->pitch <= 0) {
- sth->pitch = .2;
- }
- sth->st->setPitch(sth->pitch);
- sth->st->flush();
+ case '6':
+ sth->rate = normalize_soundtouch_value('r',sth->rate + ADJUST_AMOUNT);
+ sth->st->setRate(sth->rate);
break;
- case '9':
- sth->octaves += .2;
- sth->st->setPitchOctaves(sth->octaves);
- sth->st->flush();
+ case '7':
+ sth->tempo = normalize_soundtouch_value('t',sth->tempo - ADJUST_AMOUNT);
+ sth->st->setTempo(sth->tempo);
break;
case '8':
- sth->octaves = 0;
- sth->st->setPitchOctaves(sth->octaves);
- sth->st->flush();
+ sth->tempo = 1.0f;
+ sth->st->setTempo(sth->tempo);
break;
- case '7':
- sth->octaves -= .2;
- sth->st->setPitchOctaves(sth->octaves);
- sth->st->flush();
+ case '9':
+ sth->tempo = normalize_soundtouch_value('t',sth->tempo + ADJUST_AMOUNT);
+ sth->st->setTempo(sth->tempo);
break;
-
case '0':
- sth->octaves = 0;
- sth->st->setPitchOctaves(sth->octaves);
- sth->pitch = 1;
- sth->st->setPitch(sth->pitch);
- sth->semi = 0;
- sth->st->setPitchSemiTones(sth->semi);
- sth->st->flush();
-
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "pitch: %f tempo: %f rate: %f\n",sth->pitch,sth->tempo,sth->rate);
}
}
}
return SWITCH_STATUS_SUCCESS;
}
-
-
static switch_bool_t soundtouch_callback(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
{
struct soundtouch_helper *sth = (struct soundtouch_helper *) user_data;
sth->st->setSetting(SETTING_USE_QUICKSEEK, 1);
sth->st->setSetting(SETTING_USE_AA_FILTER, 1);
- if (sth->semi) {
- sth->st->setPitchSemiTones(sth->semi);
- }
-
if (sth->pitch) {
sth->st->setPitch(sth->pitch);
}
- if (sth->octaves) {
- sth->st->setPitchOctaves(sth->octaves);
- }
-
if (sth->rate) {
sth->st->setRate(sth->rate);
}
if (sth->tempo) {
- sth->st->setRate(sth->tempo);
+ sth->st->setTempo(sth->tempo);
}
- if (sth->send) {
- switch_core_event_hook_add_send_dtmf(sth->session, on_dtmf);
- } else {
- switch_core_event_hook_add_recv_dtmf(sth->session, on_dtmf);
+ if (sth->hook_dtmf)
+ {
+ if (sth->send_not_recv) {
+ switch_core_event_hook_add_send_dtmf(sth->session, on_dtmf);
+ } else {
+ switch_core_event_hook_add_recv_dtmf(sth->session, on_dtmf);
+ }
}
}
break;
case SWITCH_ABC_TYPE_CLOSE:
{
delete sth->st;
- if (sth->send) {
+ if (sth->send_not_recv) {
switch_core_event_hook_remove_send_dtmf(sth->session, on_dtmf);
} else {
switch_core_event_hook_remove_recv_dtmf(sth->session, on_dtmf);
assert(sth != NULL);
assert(sth->st != NULL);
- if (sth->read) {
+ if (! sth->send_not_recv) {
frame = switch_core_media_bug_get_read_replace_frame(bug);
} else {
frame = switch_core_media_bug_get_write_replace_frame(bug);
memset(frame->data, 0, frame->datalen);
}
- if (sth->read) {
+ if (! sth->send_not_recv) {
switch_core_media_bug_set_read_replace_frame(bug, frame);
} else {
switch_core_media_bug_set_write_replace_frame(bug, frame);
if (data && (lbuf = switch_core_session_strdup(session, data))
&& (argc = switch_separate_string(lbuf, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
- sth->send = 0;
- sth->read = 0;
sth->pitch = 1;
+ sth->rate = 1;
+ sth->tempo = 1;
+ sth->hook_dtmf = false;
+ sth->send_not_recv = false;
for (x = 0; x < argc; x++) {
- if (!strncasecmp(argv[x], "send", 4)) {
- sth->send = 1;
- } else if (!strncasecmp(argv[x], "read", 4)) {
- sth->read = 1;
+ if (!strncasecmp(argv[x], "send_leg", 8)) {
+ sth->send_not_recv = true;
+ }else if(!strncasecmp(argv[x], "hook_dtmf", 9)) {
+ sth->hook_dtmf = true;
} else if (strchr(argv[x], 'p')) {
- if ((sth->pitch = atof(argv[x]) < 0)) {
- sth->pitch = 0;
- }
+ sth->pitch = normalize_soundtouch_value('p',atof(argv[x]));
} else if (strchr(argv[x], 'r')) {
- sth->rate = atof(argv[x]);
+ sth->rate = normalize_soundtouch_value('r',atof(argv[x]));
} else if (strchr(argv[x], 'o')) {
- sth->octaves = atof(argv[x]);
+ sth->pitch = normalize_soundtouch_value('p', compute_pitch_from_octaves(atof(argv[x])) );
} else if (strchr(argv[x], 's')) {
- sth->semi = atof(argv[x]);
+ /*12.0f taken from soundtouch conversion to octaves*/
+ sth->pitch = normalize_soundtouch_value('p', compute_pitch_from_octaves(atof(argv[x]) / 12.0f) );
} else if (strchr(argv[x], 't')) {
- if ((sth->tempo = atof(argv[x]) < 0)) {
- sth->tempo = 0;
- }
+ sth->tempo = normalize_soundtouch_value('t',atof(argv[x]));
}
}
}
sth->session = session;
if ((status = switch_core_media_bug_add(session, soundtouch_callback, sth, 0,
- sth->read ? SMBF_READ_REPLACE : SMBF_WRITE_REPLACE, &bug)) != SWITCH_STATUS_SUCCESS) {
+ sth->send_not_recv ? SMBF_WRITE_REPLACE : SMBF_READ_REPLACE, &bug)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failure!\n");
return;
}
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
- SWITCH_ADD_APP(app_interface, "soundtouch", "Alter the audio stream", "Alter the audio stream",
- soundtouch_start_function, "[send|recv] [-]<X>s [.]<X>p", SAF_NONE);
+ SWITCH_ADD_APP(app_interface, "soundtouch", "Alter the audio stream", "Alter the audio stream pitch/rate/tempo",
+ soundtouch_start_function, "[send_leg] [hook_dtmf] [-]<X>s [-]<X>o <X>p <X>r <X>t", SAF_NONE);
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
projects / thirdparty / freeswitch.git / commitdiff
