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Diffstat (limited to 'soundserver/simplesoundserver_impl.cc')
| -rw-r--r-- | soundserver/simplesoundserver_impl.cc | 453 |
1 files changed, 453 insertions, 0 deletions
diff --git a/soundserver/simplesoundserver_impl.cc b/soundserver/simplesoundserver_impl.cc new file mode 100644 index 0000000..608f146 --- /dev/null +++ b/soundserver/simplesoundserver_impl.cc @@ -0,0 +1,453 @@ + /* + + Copyright (C) 1999-2001 Stefan Westerfeld + stefan@space.twc.de + 2001 Matthias Kretz + kretz@kde.org + 2003 Allan Sandfeld Jensen + kde@carewolf.com + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + 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. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + Permission is also granted to link this program with the Qt + library, treating Qt like a library that normally accompanies the + operating system kernel, whether or not that is in fact the case. + + */ + +#include "simplesoundserver_impl.h" +#include "artsflow.h" +#include "flowsystem.h" +#include "audiosubsys.h" +#include "connect.h" +#include "debug.h" +#include "reference.h" + +#include <stdio.h> +#include <iostream> + +using namespace std; +using namespace Arts; + +void SoundServerJob::detach(const Object&) +{ + // nothing by default +} + +SoundServerJob::~SoundServerJob() +{ + // virtual destructor, since we've got virtual functions +} + +PlayWavJob::PlayWavJob(const string& filename) :terminated(false) +{ + arts_debug("play '%s'!",filename.c_str()); + + connect(wav,out); + wav.filename(filename); + wav.start(); + out.start(); +} + +void PlayWavJob::terminate() +{ + terminated = true; +} + +bool PlayWavJob::done() +{ + return terminated || wav.finished(); +} + +PlayObjectJob::PlayObjectJob(PlayObject newPlob) + : plob(newPlob), terminated(false) +{ + plob.play(); +} + +void PlayObjectJob::terminate() +{ + terminated = true; + plob.halt(); +} + +bool PlayObjectJob::done() +{ + return terminated || (plob.state() == posIdle); +} + +PlayStreamJob::PlayStreamJob(ByteSoundProducer bsp) : sender(bsp) +{ + int samplingRate = bsp.samplingRate(); + int channels = bsp.channels(); + int bits = bsp.bits(); + + arts_debug("incoming stream, parameters: rate=%d, %d bit, %d channels", + samplingRate, bits, channels); + + if((samplingRate < 500 || samplingRate > 2000000) + || (channels != 1 && channels != 2) || (bits != 8 && bits != 16)) + { + arts_warning("invalid stream parameters: rate=%d, %d bit, %d channels", + samplingRate, bits, channels); + terminate(); + return; + } + + convert.samplingRate(samplingRate); + convert.channels(channels); + convert.bits(bits); + ByteSoundProducerV2 senderv2 = DynamicCast(sender); + if(!senderv2.isNull()) + out.title(senderv2.title()); + + connect(sender,"outdata",convert,"indata"); + connect(convert,out); + + convert.start(); + out.start(); +} + +void PlayStreamJob::detach(const Object& object) +{ + if(object._isEqual(sender)) + terminate(); +} + +void PlayStreamJob::terminate() +{ + sender = ByteSoundProducer::null(); +} + +bool PlayStreamJob::done() +{ + // when the sender is not alive any longer, assign a null object + if(!sender.isNull() && sender.error()) + sender = ByteSoundProducer::null(); + + return sender.isNull() && !convert.running(); +} + +RecordStreamJob::RecordStreamJob(ByteSoundReceiver bsr) : receiver(bsr) +{ + int samplingRate = bsr.samplingRate(); + int channels = bsr.channels(); + int bits = bsr.bits(); + + arts_debug("outgoing stream, parameters: rate=%d, %d bit, %d channels", + samplingRate, bits, channels); + + if((samplingRate < 500 || samplingRate > 2000000) + || (channels != 1 && channels != 2) || (bits != 8 && bits != 16)) + { + arts_warning("invalid stream parameters: rate=%d, %d bit, %d channels", + samplingRate, bits, channels); + terminate(); + return; + } + + convert.samplingRate(samplingRate); + convert.channels(channels); + convert.bits(bits); + in.title(receiver.title()); + + connect(in,convert); + connect(convert,"outdata",receiver,"indata"); + + in.start(); + convert.start(); +} + +void RecordStreamJob::detach(const Object& object) +{ + if(object._isEqual(receiver)) + terminate(); +} + +void RecordStreamJob::terminate() +{ + receiver = ByteSoundReceiver::null(); + convert.stop(); + in.stop(); +} + +bool RecordStreamJob::done() +{ + // when the sender is not alive any longer, assign a null object + if(!receiver.isNull() && receiver.error()) + receiver = ByteSoundReceiver::null(); + + return receiver.isNull(); +} + +/* + * ( This place where other objects for playing wave files and such will + * be connected, to get their output mixed with the other clients ). + * _____________________ + * | soundcardBus | (a Synth_BUS_DOWNLINK for "out_soundcard") + * ~~~~~~~~~~~~~~~~~~~~~ + * | | + * ___V____________V____ + * | outstack | (here the user can plugin various effects) + * ~~~~~~~~~~~~~~~~~~~~~ + * | | + * ___V____________V____ + * | outVolume | (global output volume for the soundserver) + * ~~~~~~~~~~~~~~~~~~~~~ + * | | + * ___V____________V____ + * | playSound | (output to soundcard) + * ~~~~~~~~~~~~~~~~~~~~~ + */ +SimpleSoundServer_impl::SimpleSoundServer_impl() : autoSuspendTime(0), bufferMultiplier(1) +{ + soundcardBus.busname("out_soundcard"); + connect(soundcardBus,_outstack); + connect(_outstack,_outVolume); + connect(_outVolume,playSound); + + if(AudioSubSystem::the()->fullDuplex()) + { + recordBus.busname("in_soundcard"); + connect(recordSound,recordBus); + + recordBus.start(); + recordSound.start(); + } + + soundcardBus.start(); + _outVolume.start(); + playSound.start(); + + asCount = 0; // AutoSuspend + Dispatcher::the()->ioManager()->addTimer(200,this); + + // load Arts::MidiManager when installed + TraderQuery query; + query.supports("InterfaceName","Arts::MidiManager"); + + vector<TraderOffer> *offers = query.query(); + if(offers->size()) + _addChild(Arts::SubClass("Arts::MidiManager"), + "Extension_Arts::MidiManager"); + delete offers; +} + +SimpleSoundServer_impl::~SimpleSoundServer_impl() +{ + /* + * we don't need to care about the flow system nodes we started, since + * we have put them into Object_var's, which means that they will be + * freed automatically here + */ + Dispatcher::the()->ioManager()->removeTimer(this); +} + +long SimpleSoundServer_impl::play(const string& filename) +{ + PlayObject tmp( createPlayObject( filename ) ); + if ( tmp.isNull() ) + return 0; // No success creating the PlayObject and playing the file... + jobs.push_back(new PlayObjectJob(tmp)); + return 1; +} + +float SimpleSoundServer_impl::serverBufferTime() +{ + float hardwareBuffer = AudioSubSystem::the()->fragmentSize() + * AudioSubSystem::the()->fragmentCount(); + + float playSpeed = AudioSubSystem::the()->channels() + * AudioSubSystem::the()->samplingRate() + * (AudioSubSystem::the()->bits() / 8); + + return 1000.0 * hardwareBuffer / playSpeed; +} + +float SimpleSoundServer_impl::minStreamBufferTime() +{ + /* + * It is sane to assume that client side stream buffers must be >= server + * side hardware buffers (or it can come to dropouts during hardware + * buffer refill). The buffer size can be increased using the multiplier. + */ + return bufferMultiplier * serverBufferTime(); +} + +void SimpleSoundServer_impl::attach(ByteSoundProducer bsp) +{ + arts_return_if_fail(!bsp.isNull()); + + jobs.push_back(new PlayStreamJob(bsp)); +} + +void SimpleSoundServer_impl::detach(ByteSoundProducer bsp) +{ + arts_return_if_fail(!bsp.isNull()); + arts_debug("detach incoming stream"); + + list<SoundServerJob *>::iterator j; + + for(j = jobs.begin();j != jobs.end();j++) + (*j)->detach(bsp); +} + +void SimpleSoundServer_impl::attachRecorder(ByteSoundReceiver bsr) +{ + arts_return_if_fail(!bsr.isNull()); + jobs.push_back(new RecordStreamJob(bsr)); +} + +void SimpleSoundServer_impl::detachRecorder(ByteSoundReceiver bsr) +{ + arts_return_if_fail(!bsr.isNull()); + arts_debug("detach outgoing stream"); + + list<SoundServerJob *>::iterator j; + + for(j = jobs.begin();j != jobs.end();j++) + (*j)->detach(bsr); +} + +StereoEffectStack SimpleSoundServer_impl::outstack() +{ + return _outstack; +} + +Object SimpleSoundServer_impl::createObject(const string& name) +{ + // don't use SubClass(name) as this will abort if the object is not found + return Object::_from_base(ObjectManager::the()->create(name)); +} + +void SimpleSoundServer_impl::notifyTime() +{ + static long lock = 0; + assert(!lock); // paranoid reentrancy check (remove me later) + lock++; + /* + * Three times the same game: look if a certain object is still + * active - if yes, keep, if no, remove + */ + + /* look for jobs which may have terminated by now */ + list<SoundServerJob *>::iterator i; + + i = jobs.begin(); + while(i != jobs.end()) + { + SoundServerJob *job = *i; + + if(job->done()) + { + delete job; + jobs.erase(i); + arts_debug("job finished"); + i = jobs.begin(); + } + else i++; + } + +/* + * AutoSuspend + */ + if(Dispatcher::the()->flowSystem()->suspendable() && + !Dispatcher::the()->flowSystem()->suspended() && + autoSuspendTime != 0) + { + asCount++; + if(asCount > autoSuspendTime*5) + { + Dispatcher::the()->flowSystem()->suspend(); + arts_info("sound server suspended"); + } + } + else + asCount = 0; + lock--; +} + +PlayObject SimpleSoundServer_impl::createPlayObject(const string& filename) +{ + string objectType = ""; + + /* + * figure out extension (as lowercased letters) + */ + string extension = ""; + bool extensionok = false; + string::const_reverse_iterator i; + for(i = filename.rbegin(); i != filename.rend() && !extensionok; i++) + { + if(*i == '.') + extensionok = true; + else + extension.insert(extension.begin(), (char)tolower(*i)); + } + + /* + * query trader for PlayObjects which support this + */ + if(extensionok) + { + arts_debug("search playobject, extension = %s",extension.c_str()); + + TraderQuery query; + query.supports("Interface","Arts::PlayObject"); + query.supports("Extension",extension); + + vector<TraderOffer> *offers = query.query(); + if(!offers->empty()) + objectType = offers->front().interfaceName(); // first offer + + delete offers; + } + + /* + * create a PlayObject and connect it + */ + if(!objectType.empty()) + { + arts_debug("creating %s to play file %s", objectType.c_str(), filename.c_str() ); + + PlayObject result = SubClass(objectType); + if(result.loadMedia(filename)) + { + // TODO: check for existence of left & right streams + Synth_BUS_UPLINK uplink; + uplink.busname("out_soundcard"); + connect(result,"left",uplink,"left"); + connect(result,"right",uplink,"right"); + uplink.start(); + result._node()->start(); + result._addChild(uplink,"uplink"); + return result; + } + else arts_warning("couldn't load file %s", filename.c_str()); + } + else arts_warning("file format extension %s unsupported",extension.c_str()); + + return PlayObject::null(); +} + +#ifndef __SUNPRO_CC +/* SunPRO CC has problems finding the SimpleSoundServer_impl constructor + implementation from a template instantiation file, if this is here, + although I verified that the requested and provided symbols do indeed match, + and the latter is global. Wonderfully this problem goes away, if we don't + register the implementation here, but in another file. I bet this is + because of the static var that is created by the macro. */ +REGISTER_IMPLEMENTATION(SimpleSoundServer_impl); +#endif |