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/**
* @file
* @author 2012-2013 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
// see http://stackoverflow.com/questions/6563810/m-pi-works-with-math-h-but-not-with-cmath-in-visual-studio
#define _USE_MATH_DEFINES
#include <cmath>
#include <boost/algorithm/string.hpp>
#include "OpenALInvoker.h"
#include <uscxml/config.h>
#include <glog/logging.h>
#include <limits.h>
#ifdef BUILD_AS_PLUGINS
#include <Pluma/Connector.hpp>
#endif
namespace uscxml {
#ifdef BUILD_AS_PLUGINS
PLUMA_CONNECTOR
bool pluginConnect(pluma::Host& host) {
host.add( new OpenALInvokerProvider() );
return true;
}
#endif
// see http://stackoverflow.com/questions/1904635/warning-c4003-and-errors-c2589-and-c2059-on-x-stdnumeric-limitsintmax
#undef max
OpenALInvoker::OpenALInvoker() {
_isStarted = false;
_alContext = NULL;
_alDevice = NULL;
_thread = NULL;
_listenerPos[0] = _listenerPos[1] = _listenerPos[2] = 0;
_listenerVel[0] = _listenerVel[1] = _listenerVel[2] = 0;
_maxPos[0] = _maxPos[1] = _maxPos[2] = 1;
_listenerOrient[0] = _listenerOrient[1] = _listenerOrient[3] = _listenerOrient[5] = 0;
_listenerOrient[2] = _listenerOrient[4] = 1.0;
}
OpenALInvoker::~OpenALInvoker() {
if (_thread) {
_isStarted = false;
_sourcesAvailable.notify_all();
_thread->join();
delete(_thread);
}
if (_alContext) {
// alcCloseDevice(alcGetContextsDevice(_alContext));
// alcDestroyContext(_alContext);
}
};
boost::shared_ptr<InvokerImpl> OpenALInvoker::create(InterpreterImpl* interpreter) {
boost::shared_ptr<OpenALInvoker> invoker = boost::shared_ptr<OpenALInvoker>(new OpenALInvoker());
invoker->_interpreter = interpreter;
return invoker;
}
Data OpenALInvoker::getDataModelVariables() {
Data data;
return data;
}
void OpenALInvoker::send(const SendRequest& req) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
if (!_isStarted)
start();
if (iequals(req.name, "play")) {
if (req.params.find("src") == req.params.end()) {
LOG(ERROR) << "Sent event play with no src URL";
}
URL srcURL = req.params.find("src")->second.atom;
if (!srcURL.toAbsolute(_interpreter->getBaseURI())) {
LOG(ERROR) << "src URL " << req.params.find("src")->second << " is relative with no base URI set for interpreter";
return;
}
_sources[req.sendid] = new OpenALSource();
_sources[req.sendid]->loop = req.params.find("loop") != req.params.end() && iequals(req.params.find("loop")->second.atom, "true");
_sources[req.sendid]->file = srcURL;
#ifdef LIBSNDFILE_FOUND
_sources[req.sendid]->transform = new LibSoundFile(srcURL.asLocalFile(".audio"));
#else
# ifdef AUDIOTOOLBOX_FOUND
_sources[req.sendid]->transform = new AudioToolbox(srcURL.asLocalFile(".audio"));
# endif
#endif
if (_sources[req.sendid]->transform == NULL) {
LOG(ERROR) << "No transcoder for input file known - install libsndfile or AudioToolbox";
_sources.erase(req.sendid);
return;
}
// force mono format to ensure actual spatial audio
PCMFormat format = _sources[req.sendid]->transform->getInFormat();
format.alFormat = AL_FORMAT_MONO16;
_sources[req.sendid]->transform->setOutFormat(format);
try {
_sources[req.sendid]->player = new OpenALPlayer(_alContext, NULL, format.alFormat, format.sampleRate);
} catch (std::exception ex) {
returnErrorExecution(ex.what());
return;
}
getPosFromParams(req.params, _sources[req.sendid]->pos);
_sources[req.sendid]->pos[0] -= _listenerPos[0];
_sources[req.sendid]->pos[1] -= _listenerPos[1];
_sources[req.sendid]->pos[2] -= _listenerPos[2];
try {
_sources[req.sendid]->player->setPosition(_sources[req.sendid]->pos);
} catch (std::exception ex) {
returnErrorExecution(ex.what());
}
_sourcesAvailable.notify_all();
}
if (iequals(req.name, "move.source")) {
std::string sourceId;
if (req.params.find("source") == req.params.end()) {
LOG(WARNING) << "Cannot move source with no source given in parameters";
return;
}
sourceId = req.params.find("source")->second.atom;
if (_sources.find(sourceId) == _sources.end()) {
LOG(WARNING) << "Given source '" << sourceId << "' not active or not existing";
return;
}
getPosFromParams(req.params, _sources[sourceId]->pos);
try {
_sources[sourceId]->player->setPosition(_sources[sourceId]->pos);
} catch (std::exception ex) {
returnErrorExecution(ex.what());
}
}
if (iequals(req.name, "move.listener")) {
getPosFromParams(req.params, _listenerPos);
try {
alcMakeContextCurrent(_alContext);
alListenerfv(AL_POSITION, _listenerPos);
OpenALPlayer::checkOpenALError(__LINE__);
} catch (std::exception ex) {
returnErrorExecution(ex.what());
}
}
}
void OpenALInvoker::start() {
_isStarted = true;
_thread = new tthread::thread(&OpenALInvoker::fillBuffers, this);
}
void OpenALInvoker::fillBuffers(void* userdata) {
OpenALInvoker* INST = (OpenALInvoker*)userdata;
while(INST->_isStarted) {
// do nothing until we have at least one source
int waitMs = std::numeric_limits<int>::max();
INST->_mutex.lock();
while (INST->_sources.size() == 0 && INST->_isStarted) {
INST->_sourcesAvailable.wait(INST->_mutex);
}
if (!INST->_isStarted)
return;
// here we are with at least one source and a locked mutex
assert(INST->_sources.size() > 0);
std::map<std::string, OpenALSource*>::iterator srcIter = INST->_sources.begin();
while(srcIter != INST->_sources.end()) {
OpenALSource* src = srcIter->second;
int wait = std::numeric_limits<int>::max();
if (src->finished) {
// source has already finished playing, feed no more samples to it
try {
wait = src->player->isPlaying();
if (wait == 0) {
// source stopped playing, delete it
INST->notifyOfEnd(src);
delete src;
INST->_sources.erase(srcIter++);
continue;
} else {
// source returned time when to repoll
assert(wait > 0);
}
} catch (std::exception ex) {
INST->returnErrorExecution(ex.what());
delete src;
INST->_sources.erase(srcIter++);
continue;
}
} else {
// source still needs more samples or play existing buffer
if (src->written == src->read) {
// all read samples have been written, read some more
src->written = 0;
src->read = src->transform->read(src->buffer, ALPLAY_AUDIO_BUFFER_SIZE);
if (src->read < ALPLAY_AUDIO_BUFFER_SIZE) {
if (src->loop) {
INST->notifyOfLoop(src);
while (src->read < ALPLAY_AUDIO_BUFFER_SIZE) {
src->transform->seek(0);
src->read += src->transform->read(src->buffer + src->read, ALPLAY_AUDIO_BUFFER_SIZE - src->read);
}
} else {
src->finished = true;
memset(src->buffer + src->read, 0, ALPLAY_AUDIO_BUFFER_SIZE - src->read);
}
}
}
// there are unwritten samples in the buffer
if (src->read != src->written) {
try {
int written = src->player->write(src->buffer, ALPLAY_AUDIO_BUFFER_SIZE, &wait);
if (written >=0 ) {
src->written += written;
}
} catch (std::exception ex) {
INST->returnErrorExecution(ex.what());
src->finished = true;
}
} else {
assert(src->finished);
}
}
waitMs = (wait < waitMs ? wait : waitMs);
srcIter++;
}
// std::cout << "W" << waitMs << ".";
INST->_mutex.unlock();
if (waitMs < std::numeric_limits<int>::max())
tthread::this_thread::sleep_for(tthread::chrono::milliseconds(waitMs));
}
}
void OpenALInvoker::cancel(const std::string sendId) {
tthread::lock_guard<tthread::recursive_mutex> lock(_mutex);
}
void OpenALInvoker::invoke(const InvokeRequest& req) {
_alDevice = alcOpenDevice(NULL);
if (_alDevice == NULL) {
throw std::string("__FILE__ __LINE__ openal error opening device");
}
std::multimap<std::string, Data>::const_iterator paramIter = req.params.begin();
while(paramIter != req.params.end()) {
if (iequals(paramIter->first, "maxX"))
_maxPos[0] = strTo<float>(paramIter->second.atom);
if (iequals(paramIter->first, "maxY"))
_maxPos[1] = strTo<float>(paramIter->second.atom);
if (iequals(paramIter->first, "maxZ"))
_maxPos[2] = strTo<float>(paramIter->second.atom);
paramIter++;
}
// create new context with device
_alContext = alcCreateContext (_alDevice, NULL);
if (_alContext == NULL) {
alcCloseDevice (_alDevice);
throw std::string("openal error create context");
}
// std::cout << boost::lexical_cast<std::string>(_alContext);
// std::cout << boost::lexical_cast<std::string>(_alDevice);
alcMakeContextCurrent(_alContext);
// float listener[3] = {0,0,0};
// alListenerfv(AL_POSITION, listener);
alcMakeContextCurrent(_alContext);
alListenerfv(AL_POSITION, _listenerPos);
alListenerfv(AL_VELOCITY, _listenerVel);
alListenerfv(AL_ORIENTATION, _listenerOrient);
alListenerf(AL_GAIN, 0.5);
start();
}
void OpenALInvoker::notifyOfEnd(OpenALSource* src) {
Event ev;
ev.name = "audio.end";
ev.data.compound["file"] = src->file;
returnEvent(ev);
}
void OpenALInvoker::notifyOfLoop(OpenALSource* src) {
Event ev;
ev.name = "audio.loop";
ev.data.compound["file"] = src->file;
returnEvent(ev);
}
void OpenALInvoker::getPosFromParams(const std::multimap<std::string, Data>& params, float* position) {
// vector explicitly given
try {
if (params.find("x") != params.end())
position[0] = boost::lexical_cast<float>(params.find("x")->second);
if (params.find("y") != params.end())
position[1] = boost::lexical_cast<float>(params.find("y")->second);
if (params.find("z") != params.end())
position[2] = boost::lexical_cast<float>(params.find("z")->second);
} catch (boost::bad_lexical_cast& e) {
LOG(ERROR) << "Cannot interpret x, y or z as float value in params: " << e.what();
}
try {
// right is an alias for x
if (params.find("right") != params.end())
position[0] = boost::lexical_cast<float>(params.find("right")->second);
// height is an alias for y
if (params.find("height") != params.end())
position[1] = boost::lexical_cast<float>(params.find("height")->second);
// front is an alias for z
if (params.find("front") != params.end())
position[2] = boost::lexical_cast<float>(params.find("front")->second);
} catch (boost::bad_lexical_cast& e) {
LOG(ERROR) << "Cannot interpret right, height or front as float value in params: " << e.what();
}
// do we have a position on a circle?
try {
if (params.find("circle") != params.end()) {
float rad = posToRadian(params.find("circle")->second);
position[0] = cosf(rad);
position[2] = -1 * sinf(rad); // z axis increases to front
// position[0] *= 150;
// position[2] *= 150;
}
} catch (boost::bad_lexical_cast& e) {
LOG(ERROR) << "Cannot interpret circle as float value in params: " << e.what();
}
position[0] = position[0] / _maxPos[0];
position[1] = position[1] / _maxPos[1];
position[2] = position[2] / _maxPos[2];
// std::cout << position[0] << ":" << position[1] << ":" << position[2] << std::endl;
}
float OpenALInvoker::posToRadian(const std::string& pos) {
std::string trimmedPos = boost::trim_copy(pos);
float rad = 0;
if (trimmedPos.size() > 3 && iequals("deg", trimmedPos.substr(trimmedPos.length() - 3, 3))) {
rad = boost::lexical_cast<float>(trimmedPos.substr(0, trimmedPos.size() - 3));
rad = fmodf(rad, 360); // into range [0-360]
rad /= 180; // into range [0-2]
rad *= M_PI; // into range [0-2PI]
rad -= M_PI_2; // 0 to top;
rad *= -1; // make clockwise
rad += 2 * M_PI; // make positive
} else if (trimmedPos.size() > 3 && iequals("rad", trimmedPos.substr(trimmedPos.length() - 3, 3))) {
rad = boost::lexical_cast<float>(trimmedPos.substr(0, trimmedPos.size() - 3));
rad = fmodf(rad, M_PI * 2); // into range [0-2*PI]
} else {
LOG(ERROR) << "Cannot make sense of position value " << trimmedPos << ": does not end in 'deg', 'rad'";
}
return rad;
}
OpenALSource::OpenALSource() {
pos[0] = pos[1] = pos[2] = 0;
player = NULL;
loop = false;
finished = false;
transform = NULL;
read = written = 0;
memset(buffer, 0, ALPLAY_AUDIO_BUFFER_SIZE);
}
OpenALSource::~OpenALSource() {
if (player)
delete player;
if (transform)
delete transform;
}
}
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