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/*
mixer.cpp:
Copyright (C) 2005 by Michael Gogins
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include <map>
#include <vector>
#include "OpcodeBase.hpp"
using namespace csound;
// Define ENABLE_MIXER_IDEBUG to enable i-rate debug messages.
//#define ENABLE_MIXER_IDEBUG
// Define ENABLE_MIXER_KDEBUG to enable -rate and a-rate debug messages.
//#define ENABLE_MIXER_KDEBUG
/**
* The mixer busses are laid out:
* busses[csound][bus][channel][frame].
* std::map<CSOUND *, std::map<size_t, std::vector< std::vector<MYFLT> > > >
* *busses = 0;
*
* The mixer send matrix is laid out:
* matrix[csound][send][bus].
* std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT> > > *matrix = 0;
*/
/**
* Creates the buss if it does not already exist.
*/
static void createBuss(CSOUND *csound, size_t buss) {
#ifdef ENABLE_MIXER_IDEBUG
csound->Message(csound, "createBuss: csound %p buss %d...\n", csound, buss);
#endif
std::map<CSOUND *, std::map<size_t, std::vector<std::vector<MYFLT>>>>
*busses = 0;
csound::QueryGlobalPointer(csound, "busses", busses);
if ((*busses)[csound].find(buss) == (*busses)[csound].end()) {
size_t channels = csound->GetNchnls(csound);
size_t frames = csound->GetKsmps(csound);
(*busses)[csound][buss].resize(channels);
for (size_t channel = 0; channel < channels; channel++) {
(*busses)[csound][buss][channel].resize(frames);
}
#ifdef ENABLE_MIXER_IDEBUG
csound->Message(csound, "createBuss: created buss.\n");
#endif
} else {
#ifdef ENABLE_MIXER_IDEBUG
csound->Message(csound, "createBuss: buss already exists.\n");
#endif
}
}
/**
* MixerSetLevel isend, ibuss, kgain
*
* Controls the gain of any signal route from a send to a bus
*/
struct MixerSetLevel : public OpcodeBase<MixerSetLevel> {
// No outputs.
// Inputs.
MYFLT *isend;
MYFLT *ibuss;
MYFLT *kgain;
// State.
size_t send;
size_t buss;
std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT>>> *matrix;
int init(CSOUND *csound) {
#ifdef ENABLE_MIXER_IDEBUG
warn(csound, "MixerSetLevel::init...\n");
#endif
csound::QueryGlobalPointer(csound, "matrix", matrix);
send = static_cast<size_t>(*isend);
buss = static_cast<size_t>(*ibuss);
createBuss(csound, buss);
(*matrix)[csound][send][buss] = *kgain;
#ifdef ENABLE_MIXER_IDEBUG
warn(csound, "MixerSetLevel::init: csound %p send %d buss %d gain %f\n",
csound, send, buss, (*matrix)[csound][send][buss]);
#endif
return OK;
}
int kontrol(CSOUND *csound) {
(*matrix)[csound][send][buss] = *kgain;
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerSetLevel::kontrol: csound %p send %d buss "
"%d gain %f\n",
csound, send, buss, (*matrix)[csound][send][buss]);
#endif
return OK;
}
};
/**
* kgain MixerGetLevel isend, ibuss
*
* Returns the gain of any signal route from a send to a bus.
*/
struct MixerGetLevel : public OpcodeBase<MixerGetLevel> {
//.
MYFLT *kgain;
// Inputs.
MYFLT *isend;
MYFLT *ibuss;
// State.
size_t send;
size_t buss;
std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT>>> *matrix;
int init(CSOUND *csound) {
#ifdef ENABLE_MIXER_IDEBUG
warn(csound, "MixerGetLevel::init...\n");
#endif
csound::QueryGlobalPointer(csound, "matrix", matrix);
send = static_cast<size_t>(*isend);
buss = static_cast<size_t>(*ibuss);
createBuss(csound, buss);
return OK;
}
int noteoff(CSOUND *) { return OK; }
int kontrol(CSOUND *csound) {
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerGetLevel::kontrol...\n");
#endif
*kgain = (*matrix)[csound][send][buss];
return OK;
}
};
/**
* MixerSend asignal, isend, ibus, ichannel
*
* Routes a signal from a send to a channel of a mixer bus.
* The gain of the send is controlled by the previously set mixer level.
*/
struct MixerSend : public OpcodeBase<MixerSend> {
// No outputs.
// Inputs.
MYFLT *ainput;
MYFLT *isend;
MYFLT *ibuss;
MYFLT *ichannel;
// State.
size_t send;
size_t buss;
size_t channel;
size_t frames;
MYFLT *busspointer;
std::map<CSOUND *, std::map<size_t, std::vector<std::vector<MYFLT>>>> *busses;
std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT>>> *matrix;
int init(CSOUND *csound) {
#ifdef ENABLE_MIXER_IDEBUG
warn(csound, "MixerSend::init...\n");
#endif
csound::QueryGlobalPointer(csound, "busses", busses);
csound::QueryGlobalPointer(csound, "matrix", matrix);
send = static_cast<size_t>(*isend);
buss = static_cast<size_t>(*ibuss);
createBuss(csound, buss);
channel = static_cast<size_t>(*ichannel);
frames = opds.insdshead->ksmps;
busspointer = &(*busses)[csound][buss][channel].front();
#ifdef ENABLE_MIXER_IDEBUG
warn(csound, "MixerSend::init: instance %p send %d buss "
"%d channel %d frames %d busspointer %p\n",
csound, send, buss, channel, frames, busspointer);
#endif
return OK;
}
int noteoff(CSOUND *) { return OK; }
int audio(CSOUND *csound) {
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerSend::audio...\n");
#endif
MYFLT gain = (*matrix)[csound][send][buss];
for (size_t i = 0; i < frames; i++) {
busspointer[i] += (ainput[i] * gain);
}
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerSend::audio: instance %d send %d buss "
"%d gain %f busspointer %p\n",
csound, send, buss, gain, busspointer);
#endif
return OK;
}
};
/**
* asignal MixerReceive ibuss, ichannel
*
* Receives a signal from a channel of a bus.
* Obviously, instruments receiving signals must be numbered higher
* than instruments sending those signals.
*/
struct MixerReceive : public OpcodeBase<MixerReceive> {
// Output.
MYFLT *aoutput;
// Inputs.
MYFLT *ibuss;
MYFLT *ichannel;
// State.
size_t buss;
size_t channel;
size_t frames;
MYFLT *busspointer;
std::map<CSOUND *, std::map<size_t, std::vector<std::vector<MYFLT>>>> *busses;
int init(CSOUND *csound) {
csound::QueryGlobalPointer(csound, "busses", busses);
buss = static_cast<size_t>(*ibuss);
channel = static_cast<size_t>(*ichannel);
frames = opds.insdshead->ksmps;
createBuss(csound, buss);
#ifdef ENABLE_MIXER_IDEBUG
warn(csound, "MixerReceive::init...\n");
#endif
busspointer = &(*busses)[csound][buss][channel].front();
#ifdef ENABLE_MIXER_IDEBUG
warn(csound, "MixerReceive::init csound %p buss %d channel "
"%d frames %d busspointer %p\n",
csound, buss, channel, frames, busspointer);
#endif
return OK;
}
int noteoff(CSOUND *) { return OK; }
int audio(CSOUND *csound) {
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerReceive::audio...\n");
#else
IGN(csound);
#endif
for (size_t i = 0; i < frames; i++) {
aoutput[i] = busspointer[i];
}
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerReceive::audio aoutput %p busspointer %p\n", aoutput,
buss);
#endif
return OK;
}
};
/**
* MixerClear
*
* Clears all busses. Must be invoked after last MixerReceive.
* You should probably use a highest-numbered instrument
* with an indefinite duration that invokes only this opcode.
*/
struct MixerClear : public OpcodeBase<MixerClear> {
// No output.
// No input.
// State.
std::map<CSOUND *, std::map<size_t, std::vector<std::vector<MYFLT>>>> *busses;
int init(CSOUND *csound) {
csound::QueryGlobalPointer(csound, "busses", busses);
return OK;
}
int audio(CSOUND *csound) {
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerClear::audio...\n")
#endif
for (std::map<size_t, std::vector<std::vector<MYFLT>>>::iterator busi =
(*busses)[csound].begin();
busi != (*busses)[csound].end(); ++busi) {
for (std::vector<std::vector<MYFLT>>::iterator channeli =
busi->second.begin();
channeli != busi->second.end(); ++channeli) {
for (std::vector<MYFLT>::iterator framei = (*channeli).begin();
framei != (*channeli).end(); ++framei) {
*framei = 0;
}
}
}
#ifdef ENABLE_MIXER_KDEBUG
warn(csound, "MixerClear::audio\n")
#endif
return OK;
}
};
extern "C" {
static OENTRY localops[] = {
{(char *)"MixerSetLevel", sizeof(MixerSetLevel), _CW, 3, (char *)"",
(char *)"iik", (SUBR)&MixerSetLevel::init_, (SUBR)&MixerSetLevel::kontrol_,
0},
{(char *)"MixerSetLevel_i", sizeof(MixerSetLevel), _CW, 1, (char *)"",
(char *)"iii", (SUBR)&MixerSetLevel::init_, 0, 0},
{(char *)"MixerGetLevel", sizeof(MixerGetLevel), _CR, 3, (char *)"k",
(char *)"ii", (SUBR)&MixerGetLevel::init_, (SUBR)&MixerGetLevel::kontrol_,
0},
{(char *)"MixerSend", sizeof(MixerSend), _CW, 3, (char *)"", (char *)"aiii",
(SUBR)&MixerSend::init_, (SUBR)&MixerSend::audio_},
{(char *)"MixerReceive", sizeof(MixerReceive), _CR, 3, (char *)"a",
(char *)"ii", (SUBR)&MixerReceive::init_, (SUBR)&MixerReceive::audio_},
{(char *)"MixerClear", sizeof(MixerClear), 0, 3, (char *)"", (char *)"",
(SUBR)&MixerClear::init_, (SUBR)&MixerClear::audio_},
{NULL, 0, 0, 0, NULL, NULL, (SUBR)NULL, (SUBR)NULL, (SUBR)NULL}};
PUBLIC int csoundModuleCreate_mixer(CSOUND *csound) {
std::map<CSOUND *, std::map<size_t, std::vector<std::vector<MYFLT>>>>
*busses = 0;
busses =
new std::map<CSOUND *, std::map<size_t, std::vector<std::vector<MYFLT>>>>;
csound::CreateGlobalPointer(csound, "busses", busses);
std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT>>> *matrix = 0;
matrix = new std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT>>>;
csound::CreateGlobalPointer(csound, "matrix", matrix);
return OK;
}
PUBLIC int csoundModuleInit_mixer(CSOUND *csound) {
OENTRY *ep = (OENTRY *)&(localops[0]);
int err = 0;
while (ep->opname != NULL) {
err |= csound->AppendOpcode(csound, ep->opname, ep->dsblksiz, ep->flags,
ep->thread, ep->outypes, ep->intypes,
(int (*)(CSOUND *, void *))ep->iopadr,
(int (*)(CSOUND *, void *))ep->kopadr,
(int (*)(CSOUND *, void *))ep->aopadr);
ep++;
}
return err;
}
/*
* The mixer busses are laid out:
* busses[csound][bus][channel][frame].
* std::map<CSOUND *, std::map<size_t,
* std::vector< std::vector<MYFLT> > > > *busses = 0;
* The mixer send matrix is laid out:
* matrix[csound][send][bus].
* std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT> > > *matrix = 0;
*/
PUBLIC int csoundModuleDestroy_mixer(CSOUND *csound) {
std::map<CSOUND *, std::map<size_t, std::vector<std::vector<MYFLT>>>>
*busses = 0;
csound::QueryGlobalPointer(csound, "busses", busses);
if (busses) {
for (std::map<size_t, std::vector<std::vector<MYFLT>>>::iterator busi =
(*busses)[csound].begin();
busi != (*busses)[csound].end(); ++busi) {
for (std::vector<std::vector<MYFLT>>::iterator channeli =
busi->second.begin();
channeli != busi->second.end(); ++channeli) {
channeli->resize(0);
}
busi->second.clear();
}
busses->clear();
csound->DestroyGlobalVariable(csound, "busses");
delete busses;
busses = nullptr;
}
std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT>>> *matrix = 0;
csound::QueryGlobalPointer(csound, "matrix", matrix);
if (matrix) {
// std::map<CSOUND *, std::map<size_t, std::map<size_t, MYFLT> > >
for (std::map<size_t, std::map<size_t, MYFLT>>::iterator matrixi =
(*matrix)[csound].begin();
matrixi != (*matrix)[csound].end(); ++matrixi) {
matrixi->second.clear();
}
matrix->clear();
csound->DestroyGlobalVariable(csound, "matrix");
delete matrix;
matrix = nullptr;
}
return OK;
}
#ifndef INIT_STATIC_MODULES
PUBLIC int csoundModuleCreate(CSOUND *csound) {
return csoundModuleCreate_mixer(csound);
}
PUBLIC int csoundModuleInit(CSOUND *csound) {
return csoundModuleInit_mixer(csound);
}
PUBLIC int csoundModuleDestroy(CSOUND *csound) {
return csoundModuleDestroy_mixer(csound);
}
#endif
} // END EXTERN C
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