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https://github.com/signalwire/freeswitch.git
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784c7f8c3d
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@5344 d0543943-73ff-0310-b7d9-9358b9ac24b2
353 lines
11 KiB
C++
353 lines
11 KiB
C++
/*
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* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
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* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
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*
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
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*
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* The Initial Developer of the Original Code is
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* Anthony Minessale II <anthmct@yahoo.com>
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* Portions created by the Initial Developer are Copyright (C)
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Anthony Minessale II <anthmct@yahoo.com>
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*
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* mod_soundtouch.c -- Example of writeable media bugs
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*
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*/
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#include <stdexcept>
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#include <stdio.h>
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#include <SoundTouch.h>
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using namespace soundtouch;
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using namespace std;
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#include <switch.h>
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#define STSTART 1024 * 2
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#define STBLOCK 1024
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SWITCH_MODULE_LOAD_FUNCTION(mod_soundtouch_load);
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SWITCH_MODULE_DEFINITION(mod_soundtouch, mod_soundtouch_load, NULL, NULL);
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struct soundtouch_helper {
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SoundTouch *st;
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switch_core_session_t *session;
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int send;
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int read;
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float pitch;
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float octaves;
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float semi;
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float rate;
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float tempo;
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int literal;
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};
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static switch_status_t on_dtmf(switch_core_session_t *session, const char *dtmf)
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{
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switch_media_bug_t *bug;
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switch_channel_t *channel = switch_core_session_get_channel(session);
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if ((bug = (switch_media_bug_t *) switch_channel_get_private(channel, "_soundtouch_"))) {
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struct soundtouch_helper *sth = (struct soundtouch_helper *) switch_core_media_bug_get_user_data(bug);
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if (sth) {
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const char *p;
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if (sth->literal) {
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sth->literal = 0;
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return SWITCH_STATUS_SUCCESS;
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}
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for (p = dtmf; p && *p; p++) {
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if (sth->literal) {
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sth->literal = 0;
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return SWITCH_STATUS_SUCCESS;
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}
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switch(*p) {
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case '*':
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sth->literal++;
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break;
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case '3':
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sth->semi += .5;
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sth->st->setPitchSemiTones(sth->semi);
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sth->st->flush();
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break;
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case '2':
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sth->semi = 0;
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sth->st->setPitchSemiTones(sth->semi);
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sth->st->flush();
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break;
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case '1':
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sth->semi -= .5;
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sth->st->setPitchSemiTones(sth->semi);
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sth->st->flush();
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break;
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case '6':
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sth->pitch += .2;
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sth->st->setPitch(sth->pitch);
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sth->st->flush();
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break;
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case '5':
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sth->pitch = 1;
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sth->st->setPitch(sth->pitch);
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sth->st->flush();
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break;
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case '4':
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sth->pitch -= .2;
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if (sth->pitch <= 0) {
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sth->pitch = .2;
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}
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sth->st->setPitch(sth->pitch);
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sth->st->flush();
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break;
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case '9':
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sth->octaves += .2;
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sth->st->setPitchOctaves(sth->octaves);
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sth->st->flush();
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break;
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case '8':
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sth->octaves = 0;
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sth->st->setPitchOctaves(sth->octaves);
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sth->st->flush();
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break;
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case '7':
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sth->octaves -= .2;
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sth->st->setPitchOctaves(sth->octaves);
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sth->st->flush();
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break;
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case '0':
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sth->octaves = 0;
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sth->st->setPitchOctaves(sth->octaves);
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sth->pitch = 1;
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sth->st->setPitch(sth->pitch);
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sth->semi = 0;
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sth->st->setPitchSemiTones(sth->semi);
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sth->st->flush();
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}
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}
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}
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return SWITCH_STATUS_FALSE;
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}
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_bool_t soundtouch_callback(switch_media_bug_t *bug, void *user_data, switch_abc_type_t type)
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{
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struct soundtouch_helper *sth = (struct soundtouch_helper *) user_data;
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switch (type) {
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case SWITCH_ABC_TYPE_INIT:
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{
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switch_codec_t *read_codec = switch_core_session_get_read_codec(sth->session);
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sth->st = new SoundTouch();
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sth->st->setSampleRate(read_codec->implementation->samples_per_second);
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sth->st->setChannels(read_codec->implementation->number_of_channels);
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sth->st->setSetting(SETTING_USE_QUICKSEEK, 1);
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sth->st->setSetting(SETTING_USE_AA_FILTER, 1);
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if (sth->semi) {
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sth->st->setPitchSemiTones(sth->semi);
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}
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if (sth->pitch) {
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sth->st->setPitch(sth->pitch);
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}
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if (sth->octaves) {
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sth->st->setPitchOctaves(sth->octaves);
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}
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if (sth->rate) {
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sth->st->setRate(sth->rate);
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}
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if (sth->tempo) {
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sth->st->setRate(sth->tempo);
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}
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if (sth->send) {
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switch_core_event_hook_add_send_dtmf(sth->session, on_dtmf);
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} else {
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switch_core_event_hook_add_recv_dtmf(sth->session, on_dtmf);
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}
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}
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break;
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case SWITCH_ABC_TYPE_CLOSE:
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{
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delete sth->st;
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if (sth->send) {
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switch_core_event_hook_remove_send_dtmf(sth->session, on_dtmf);
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} else {
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switch_core_event_hook_remove_recv_dtmf(sth->session, on_dtmf);
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}
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}
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break;
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case SWITCH_ABC_TYPE_READ:
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case SWITCH_ABC_TYPE_WRITE:
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break;
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case SWITCH_ABC_TYPE_READ_REPLACE:
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case SWITCH_ABC_TYPE_WRITE_REPLACE:
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{
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switch_frame_t *frame;
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assert(sth != NULL);
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assert(sth->st != NULL);
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if (sth->read) {
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frame = switch_core_media_bug_get_read_replace_frame(bug);
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} else {
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frame = switch_core_media_bug_get_write_replace_frame(bug);
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}
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sth->st->putSamples((SAMPLETYPE *)frame->data, frame->samples);
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if (sth->st->numSamples() >= frame->samples * 2) {
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frame->samples = sth->st->receiveSamples((SAMPLETYPE *)frame->data, frame->samples);
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frame->datalen = frame->samples * 2;
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} else {
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memset(frame->data, 0, frame->datalen);
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}
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if (sth->read) {
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switch_core_media_bug_set_read_replace_frame(bug, frame);
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} else {
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switch_core_media_bug_set_write_replace_frame(bug, frame);
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}
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}
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default:
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break;
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}
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return SWITCH_TRUE;
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}
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static void soundtouch_start_function(switch_core_session_t *session, char *data)
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{
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switch_media_bug_t *bug;
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switch_status_t status;
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switch_channel_t *channel = switch_core_session_get_channel(session);
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struct soundtouch_helper *sth;
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char *argv[6];
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int argc;
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char *lbuf = NULL;
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int x;
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if (switch_channel_get_private(channel, "_soundtouch_")) {
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Cannot run 2 at once on the same channel!\n");
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return;
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}
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sth = (struct soundtouch_helper *) switch_core_session_alloc(session, sizeof(*sth));
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assert(sth != NULL);
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if (data && (lbuf = switch_core_session_strdup(session, data))
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&& (argc = switch_separate_string(lbuf, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
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sth->send = 0;
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sth->read = 0;
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sth->pitch = 1;
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for(x = 0; x < argc; x++) {
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if (!strncasecmp(argv[x], "send", 4)) {
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sth->send = 1;
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} else if (!strncasecmp(argv[x], "read", 4)) {
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sth->read = 1;
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} else if (strchr(argv[x], 'p')) {
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if ((sth->pitch = atof(argv[x]) < 0)) {
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sth->pitch = 0;
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}
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} else if (strchr(argv[x], 'r')) {
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sth->rate = atof(argv[x]);
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} else if (strchr(argv[x], 'o')) {
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sth->octaves = atof(argv[x]);
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} else if (strchr(argv[x], 's')) {
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sth->semi = atof(argv[x]);
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} else if (strchr(argv[x], 't')) {
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if ((sth->tempo = atof(argv[x]) < 0)) {
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sth->tempo = 0;
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}
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}
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}
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}
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sth->session = session;
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if ((status = switch_core_media_bug_add(session, soundtouch_callback, sth, 0,
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sth->read ? SMBF_READ_REPLACE : SMBF_WRITE_REPLACE, &bug)) != SWITCH_STATUS_SUCCESS) {
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failure!\n");
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return;
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}
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switch_channel_set_private(channel, "_soundtouch_", bug);
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}
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static const switch_application_interface_t soundtouch_application_interface = {
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/*.interface_name */ "soundtouch",
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/*.application_function */ soundtouch_start_function,
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/* long_desc */ "Alter the audio stream",
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/* short_desc */ "Alter the audio stream",
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/* syntax */ "[send|recv] [-]<X>s [.]<X>p",
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/* flags */ SAF_NONE,
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/* next*/
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};
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static switch_loadable_module_interface_t soundtouch_module_interface = {
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/*.module_name */ modname,
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/*.endpoint_interface */ NULL,
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/*.timer_interface */ NULL,
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/*.dialplan_interface */ NULL,
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/*.codec_interface */ NULL,
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/*.application_interface */ &soundtouch_application_interface,
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/*.api_interface */ NULL,
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/*.file_interface */ NULL,
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/*.speech_interface */ NULL,
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/*.directory_interface */ NULL
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};
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SWITCH_MODULE_LOAD_FUNCTION(mod_soundtouch_load)
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{
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/* connect my internal structure to the blank pointer passed to me */
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*module_interface = &soundtouch_module_interface;
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/* indicate that the module should continue to be loaded */
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return SWITCH_STATUS_SUCCESS;
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}
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/* For Emacs:
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* Local Variables:
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* mode:c
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* indent-tabs-mode:nil
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* tab-width:4
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* c-basic-offset:4
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* End:
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* For VIM:
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* vim:set softtabstop=4 shiftwidth=4 tabstop=4 expandtab:
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*/
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