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arts/flow/audiomanager_impl.cpp

324 lines
8.9 KiB

/*
Copyright (C) 2000 Stefan Westerfeld
stefan@space.twc.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "artsflow.h"
#include "flowsystem.h"
#include "stdsynthmodule.h"
#include "bus.h"
using namespace Arts;
using namespace std;
namespace Arts {
class AudioManagerClient_impl;
class AudioManagerAssignable {
public:
virtual long ID() = 0;
virtual void destination(const string& newDestination) = 0;
};
#ifdef __SUNPRO_CC
/* Bloody SunPRO CC has problems with instantiation of the below two
templates, if the _clients and assignable member of AudioManager_impl
are declared to be directly the type list<xxx *>. So instead be move
a typedef in between, which makes it magically work.
We could also use an explicit instantiation, but this is not allowed
on all C++ compilers in this scope. Note also, that we don't need
to replace _all_ occurrences of list<xxx*> below, only the two in the
member declaration. What a mess. */
typedef list<AudioManagerClient_impl *> L_AMC;
typedef list<AudioManagerAssignable *> L_AMA;
#else
/* with normal compilers there is no need for this typedef. */
#define L_AMC list<AudioManagerClient_impl *>
#define L_AMA list<AudioManagerAssignable *>
#endif
class AudioManager_impl : virtual public AudioManager_skel
{
protected:
L_AMC _clients;
L_AMA assignable;
long _changes, nextID;
static AudioManager_impl *instance;
public:
AudioManager_impl()
{
assert(!instance);
instance = this;
_changes = 0;
nextID = 1;
}
~AudioManager_impl()
{
assert(instance);
instance = 0;
}
vector<string> *destinations() { return BusManager::the()->busList(); }
long changes() { return _changes; }
vector<AudioManagerInfo> *clients();
void setDestination(long ID, const string& newDestination);
AudioManagerClient_impl *findClient(long ID);
// non MCOP interface
static AudioManager_impl *the() {
assert(instance);
return instance;
}
long addClient(AudioManagerClient_impl *client) {
_clients.push_back(client);
_changes++;
return nextID++;
}
void removeClient(AudioManagerClient_impl *client) {
_changes++;
_clients.remove(client);
}
void addAssignable(AudioManagerAssignable *a);
void removeAssignable(AudioManagerAssignable *a) {
assignable.remove(a);
}
};
AudioManager_impl *AudioManager_impl::instance = 0;
class AudioManagerClient_impl :virtual public AudioManagerClient_skel
{
protected:
string _title, _autoRestoreID;
long _ID;
AudioManagerDirection _direction;
string _destination;
public:
AudioManagerClient_impl() {
_ID = AudioManager_impl::the()->addClient(this);
}
~AudioManagerClient_impl() {
AudioManager_impl::the()->removeClient(this);
}
void title(const string& newvalue) { _title = newvalue; }
string title() { return _title; }
void autoRestoreID(const string& newvalue) { _autoRestoreID = newvalue; }
string autoRestoreID() { return _autoRestoreID; }
long ID() { return _ID; }
AudioManagerDirection direction() { return _direction; }
void direction(AudioManagerDirection newvalue) { _direction = newvalue; }
void constructor(AudioManagerDirection cdirection, const string& ctitle,
const string& cautoRestoreID)
{
direction(cdirection);
title(ctitle);
autoRestoreID(cautoRestoreID);
}
/* non MCOP interface */
string destination() { return _destination; }
void destination(const string& newvalue) { _destination = newvalue; }
};
// this suffers a tiny bit from copypasting due to simpler
// inheritance hierarchy
class Synth_AMAN_PLAY_impl :virtual public Synth_AMAN_PLAY_skel,
virtual public AudioManagerAssignable,
virtual public StdSynthModule
{
protected:
Synth_BUS_UPLINK uplink;
AudioManagerClient client;
public:
/* forward requests for title/autoRestoreID to client */
void title(const string& newvalue) { client.title(newvalue); }
string title() { return client.title(); }
void autoRestoreID(const string& newvalue) {client.autoRestoreID(newvalue);}
string autoRestoreID() { return client.autoRestoreID(); }
/* assign an already well-known client */
void constructor(AudioManagerClient client) {
this->client = client;
assert(client.direction() == amPlay);
}
Synth_AMAN_PLAY_impl() {
// Set direction of the client to amPlay, but actually it would
// be nice to do that only when we know we won't get a different client
// to use.
client.direction(amPlay);
_node()->virtualize("left",uplink._node(),"left");
_node()->virtualize("right",uplink._node(),"right");
}
void streamInit() {
AudioManager_impl::the()->addAssignable(this);
uplink.start();
}
void streamEnd() {
AudioManager_impl::the()->removeAssignable(this);
uplink.stop();
}
AutoSuspendState autoSuspend() {
return asSuspend;
}
// Assignable:
void destination(const string& destination) { uplink.busname(destination); }
long ID() { return client.ID(); }
};
// this suffers a tiny bit from copypasting due to simpler
// inheritance hierarchy
class Synth_AMAN_RECORD_impl :virtual public Synth_AMAN_RECORD_skel,
virtual public AudioManagerAssignable,
virtual public StdSynthModule
{
protected:
Synth_BUS_DOWNLINK downlink;
AudioManagerClient client;
public:
/* forward requests for title/autoRestoreID to client */
void title(const string& newvalue) { client.title(newvalue); }
string title() { return client.title(); }
void autoRestoreID(const string& newvalue) {client.autoRestoreID(newvalue);}
string autoRestoreID() { return client.autoRestoreID(); }
/* assign an already well-known client */
void constructor(AudioManagerClient client) {
this->client = client;
assert(client.direction() == amRecord);
}
Synth_AMAN_RECORD_impl() {
// Set direction of the client to amRecord, but actually it would
// be nice to do that only when we know we won't get a different client
// to use.
client.direction(amRecord);
_node()->virtualize("left",downlink._node(),"left");
_node()->virtualize("right",downlink._node(),"right");
}
void streamInit() {
AudioManager_impl::the()->addAssignable(this);
downlink.start();
}
void streamEnd() {
AudioManager_impl::the()->removeAssignable(this);
downlink.stop();
}
// Assignable:
void destination(const string& destination){downlink.busname(destination);}
long ID() { return client.ID(); }
};
vector<AudioManagerInfo> *AudioManager_impl::clients()
{
vector<AudioManagerInfo> *result = new vector<AudioManagerInfo>;
list<AudioManagerClient_impl *>::iterator i;
for(i = _clients.begin(); i != _clients.end(); i++)
{
AudioManagerClient_impl *client = *i;
AudioManagerInfo info;
info.ID = client->ID();
info.direction = client->direction();
info.title = client->title();
info.autoRestoreID = client->autoRestoreID();
info.destination = client->destination();
result->push_back(info);
}
return result;
}
AudioManagerClient_impl *AudioManager_impl::findClient(long ID)
{
list<AudioManagerClient_impl *>::iterator i;
for(i = _clients.begin(); i != _clients.end(); i++)
{
AudioManagerClient_impl *client = *i;
if(client->ID() == ID)
return client;
}
return 0;
}
void AudioManager_impl::setDestination(long ID, const string& newDestination)
{
AudioManagerClient_impl *client = findClient(ID);
if(client)
{
client->destination(newDestination);
list<AudioManagerAssignable *>::iterator i;
for(i = assignable.begin(); i != assignable.end(); i++)
{
AudioManagerAssignable *a = *i;
if(a->ID() == ID) a->destination(newDestination);
}
_changes++;
}
}
void AudioManager_impl::addAssignable(AudioManagerAssignable *a)
{
// ensure that this client is assigned properly
AudioManagerClient_impl *client = findClient(a->ID());
assert(client);
if(client->destination().empty())
{
// TODO: more flexible default assignment policies - load autoRestoreID
// related stuff here (or somewhere else)
switch(client->direction())
{
case amPlay: client->destination("out_soundcard");
break;
case amRecord: client->destination("in_soundcard");
break;
}
}
assignable.push_back(a);
a->destination(client->destination());
}
REGISTER_IMPLEMENTATION(AudioManagerClient_impl);
REGISTER_IMPLEMENTATION(AudioManager_impl);
REGISTER_IMPLEMENTATION(Synth_AMAN_PLAY_impl);
REGISTER_IMPLEMENTATION(Synth_AMAN_RECORD_impl);
}