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/************************************************************************
************************************************************************
FAUST compiler
Copyright (C) 2017-2021 GRAME, Centre National de Creation Musicale
---------------------------------------------------------------------
This program 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.
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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
************************************************************************
************************************************************************/
#include "instructions_compiler_jax.hh"
#include "ppsig.hh"
#include "sigtyperules.hh"
using namespace std;
StatementInst* InstructionsCompilerJAX::generateShiftArray(const string& vname, int delay)
{
Values truncated_args;
truncated_args.push_back(IB::genLoadArrayStructVar(vname));
truncated_args.push_back(IB::genLoadStackVar("1"));
return IB::genStoreArrayStructVar(vname,
IB::genFunCallInst(string("jnp.roll"), truncated_args));
}
ValueInst* InstructionsCompilerJAX::generateDelayLine(ValueInst* exp, BasicTyped* ctype,
const string& vname, int mxd,
Address::AccessType& access, ValueInst* ccs)
{
if (mxd == 0) {
// Generate scalar use
if (dynamic_cast<NullValueInst*>(ccs)) {
pushComputeDSPMethod(IB::genDecStackVar(vname, ctype, exp));
} else {
pushPreComputeDSPMethod(IB::genDecStackVar(vname, ctype, IB::genTypedZero(ctype)));
pushComputeDSPMethod(IB::genControlInst(ccs, IB::genStoreStackVar(vname, exp)));
}
} else if (mxd < gGlobal->gMaxCopyDelay) {
// Generates table init
generateInitArray(vname, ctype, mxd + 1);
// Generate table use
pushComputeDSPMethod(IB::genControlInst(
ccs, IB::genStoreArrayStructVar(vname, IB::genInt32NumInst(0), exp)));
// Generates post processing copy code to update delay values
pushPostComputeDSPMethod(IB::genControlInst(ccs, generateShiftArray(vname, mxd)));
} else {
int N = pow2limit(mxd + 1);
if (N <= gGlobal->gMaskDelayLineThreshold) {
ensureIotaCode();
// Generates table init
generateInitArray(vname, ctype, N);
// Generate table use
if (gGlobal->gComputeIOTA) { // Ensure IOTA base fixed delays are computed once
if (fIOTATable.find(N) == fIOTATable.end()) {
string iota_name = subst("i$0", gGlobal->getFreshID(fCurrentIOTA + "_temp"));
FIRIndex value2 =
FIRIndex(IB::genLoadStructVar(fCurrentIOTA)) & FIRIndex(N - 1);
pushPreComputeDSPMethod(
IB::genDecStackVar(iota_name, IB::genInt32Typed(), IB::genInt32NumInst(0)));
pushComputeDSPMethod(
IB::genControlInst(ccs, IB::genStoreStackVar(iota_name, value2)));
fIOTATable[N] = iota_name;
}
pushComputeDSPMethod(IB::genControlInst(
ccs,
IB::genStoreArrayStructVar(vname, IB::genLoadStackVar(fIOTATable[N]), exp)));
} else {
FIRIndex value2 = FIRIndex(IB::genLoadStructVar(fCurrentIOTA)) & FIRIndex(N - 1);
pushComputeDSPMethod(
IB::genControlInst(ccs, IB::genStoreArrayStructVar(vname, value2, exp)));
}
} else {
// 'select' based delay
string widx_tmp_name = vname + "_widx_tmp";
string widx_name = vname + "_widx";
// Generates table write index
pushDeclare(IB::genDecStructVar(widx_name, IB::genInt32Typed()));
pushInitMethod(IB::genStoreStructVar(widx_name, IB::genInt32NumInst(0)));
// Generates table init
generateInitArray(vname, ctype, mxd + 1);
// int w = widx;
pushComputeDSPMethod(IB::genControlInst(
ccs, IB::genDecStackVar(widx_tmp_name, IB::genBasicTyped(Typed::kInt32),
IB::genLoadStructVar(widx_name))));
// dline[w] = v;
pushComputeDSPMethod(IB::genControlInst(
ccs, IB::genStoreArrayStructVar(vname, IB::genLoadStackVar(widx_tmp_name), exp)));
// w = w + 1;
FIRIndex widx_tmp1 = FIRIndex(IB::genLoadStackVar(widx_tmp_name));
pushPostComputeDSPMethod(
IB::genControlInst(ccs, IB::genStoreStackVar(widx_tmp_name, widx_tmp1 + 1)));
// w = ((w == delay) ? 0 : w);
FIRIndex widx_tmp2 = FIRIndex(IB::genLoadStackVar(widx_tmp_name));
pushPostComputeDSPMethod(IB::genControlInst(
ccs, IB::genStoreStackVar(widx_tmp_name,
IB::genSelect2Inst(widx_tmp2 == FIRIndex(mxd + 1),
FIRIndex(0), widx_tmp2))));
// *widx = w
pushPostComputeDSPMethod(IB::genControlInst(
ccs, IB::genStoreStructVar(widx_name, IB::genLoadStackVar(widx_tmp_name))));
}
}
return exp;
}
ValueInst* InstructionsCompilerJAX::generateSoundfile(Tree sig, Tree path)
{
string varname = gGlobal->getFreshID("fSoundfile");
string SFcache = varname + "ca";
fUITree.addUIWidget(reverse(tl(path)), uiWidget(hd(path), tree(varname), sig));
pushDeclare(IB::genDecStructVar(varname, IB::genBasicTyped(Typed::kSound_ptr)));
if (gGlobal->gUseDefaultSound) {
BlockInst* block = IB::genBlockInst();
block->pushBackInst(IB::genStoreStructVar(varname, IB::genLoadGlobalVar("defaultsound")));
pushResetUIInstructions(IB::genIfInst(
IB::genEqual(
IB::genCastInst(IB::genLoadStructVar(varname), IB::genBasicTyped(Typed::kUint_ptr)),
IB::genTypedZero(Typed::kSound_ptr)),
block, IB::genBlockInst()));
}
if (gGlobal->gOneSample >= 0) {
pushDeclare(IB::genDecStructVar(SFcache, IB::genBasicTyped(Typed::kSound_ptr)));
pushComputeBlockMethod(IB::genStoreStructVar(SFcache, IB::genLoadStructVar(varname)));
} else {
pushComputeBlockMethod(IB::genDecStackVar(SFcache, IB::genBasicTyped(Typed::kSound_ptr),
IB::genLoadStructVar(varname)));
}
return IB::genLoadStructVar(varname);
}
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