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Some SFZ import improvements
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- Smarter about loop and mapping from sample or sfz
- Cleaner code esp wrt variants
- etc

Addresses #1311
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@baconpaul
baconpaul committed Sep 14, 2024
1 parent 34b88bc commit c76d28a
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Showing 3 changed files with 117 additions and 110 deletions.
3 changes: 1 addition & 2 deletions src/engine/zone.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -226,8 +226,7 @@ void Zone::setupOnUnstream(const engine::Engine &e)
}
}

bool Zone::attachToSample(const sample::SampleManager &manager, int index,
SampleInformationRead sir)
bool Zone::attachToSample(const sample::SampleManager &manager, int index, int sir)
{
auto &s = variantData.variants[index];
if (s.sampleID.isValid())
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7 changes: 3 additions & 4 deletions src/engine/zone.h
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Original file line number Diff line number Diff line change
Expand Up @@ -182,7 +182,7 @@ struct Zone : MoveableOnly<Zone>, HasGroupZoneProcessors<Zone>, SampleRateSuppor
// TODO: Multi-output
size_t getNumOutputs() const { return 1; }

enum SampleInformationRead
enum SampleInformationRead : int32_t
{
NONE = 0,
MAPPING = 1 << 0,
Expand All @@ -192,10 +192,9 @@ struct Zone : MoveableOnly<Zone>, HasGroupZoneProcessors<Zone>, SampleRateSuppor
ALL = MAPPING | LOOP | ENDPOINTS
};

bool attachToSample(const sample::SampleManager &manager, int index = 0,
SampleInformationRead sir = ALL);
bool attachToSample(const sample::SampleManager &manager, int index = 0, int32_t sir = ALL);
bool attachToSampleAtVariation(const sample::SampleManager &manager, const SampleID &sid,
int16_t variation, SampleInformationRead sir = ALL)
int16_t variation, int32_t sir = ALL)
{
variantData.variants[variation].sampleID = sid;
variantData.variants[variation].active = true;
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217 changes: 113 additions & 104 deletions src/sample/sfz_support/sfz_import.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -184,46 +184,129 @@ bool importSFZ(const fs::path &f, engine::Engine &e)
};
}
}
auto zn = std::make_unique<engine::Zone>(sid);
// SFZ defaults
zn->mapping.rootKey = 60;
zn->mapping.keyboardRange.keyStart = 0;
zn->mapping.keyboardRange.keyEnd = 127;
zn->mapping.velocityRange.velStart = 0;
zn->mapping.velocityRange.velEnd = 127;

if (roundRobinPosition > 0)
auto loadInfo = engine::Zone::LOOP | engine::Zone::ENDPOINTS | engine::Zone::MAPPING;

int64_t loop_start{-1}, loop_end{-1};

for (const auto &[n, ls] :
{std::make_pair(std::string("Group"), currentGroupOpcodes), {"Region", list}})
{
int16_t rk{0}, ks{0}, ke{0}, vs{0}, ve{0};
for (auto &oc : list)
for (auto &oc : ls)
{
if (oc.name == "pitch_keycenter")
{
rk = parseMidiNote(oc.value);
zn->mapping.rootKey = parseMidiNote(oc.value);
loadInfo = loadInfo & ~engine::Zone::MAPPING;
}
else if (oc.name == "lokey")
{
ks = parseMidiNote(oc.value);
zn->mapping.keyboardRange.keyStart = parseMidiNote(oc.value);
loadInfo = loadInfo & ~engine::Zone::MAPPING;
}
else if (oc.name == "hikey")
{
ke = parseMidiNote(oc.value);
zn->mapping.keyboardRange.keyEnd = parseMidiNote(oc.value);
loadInfo = loadInfo & ~engine::Zone::MAPPING;
}
else if (oc.name == "key")
{
auto pmn = parseMidiNote(oc.value);
zn->mapping.rootKey = pmn;
zn->mapping.keyboardRange.keyStart = pmn;
zn->mapping.keyboardRange.keyEnd = pmn;
loadInfo = loadInfo & ~engine::Zone::MAPPING;
}
else if (oc.name == "lovel")
{
vs = std::atol(oc.value.c_str());
zn->mapping.velocityRange.velStart = std::atol(oc.value.c_str());
loadInfo = loadInfo & ~engine::Zone::MAPPING;
}
else if (oc.name == "hivel")
{
ve = std::atol(oc.value.c_str());
zn->mapping.velocityRange.velEnd = std::atol(oc.value.c_str());
loadInfo = loadInfo & ~engine::Zone::MAPPING;
}
}
else if (oc.name == "loop_start")
{
loop_start = std::atol(oc.value.c_str());
loadInfo = loadInfo & ~engine::Zone::LOOP;
}
else if (oc.name == "loop_end")
{
loop_end = std::atol(oc.value.c_str());
loadInfo = loadInfo & ~engine::Zone::LOOP;
}
else if (oc.name == "sample" || oc.name == "seq_position")
{
// dealt with above
}
else if (oc.name == "ampeg_sustain")
{
zn->egStorage[0].s = std::atof(oc.value.c_str()) * 0.01;
}
else if (oc.name == "volume")
{
zn->mapping.amplitude = std::atof(oc.value.c_str()); // decibels
}
else if (oc.name == "tune")
{
// Tune is supplied in cents. Our pitch offset is in semitones
zn->mapping.pitchOffset = std::atof(oc.value.c_str()) * 0.01;
}
else if (oc.name == "loop_mode")
{
if (oc.value == "loop_continuous")
{
// FIXME: In round robin looping modes this is probably wrong
zn->variantData.variants[0].loopActive = true;
zn->variantData.variants[0].loopMode = engine::Zone::LOOP_DURING_VOICE;
}
else
{
SCLOG("SFZ Unsupported loop_mode : " << oc.value);
}
}

#define APPLYEG(v, d, t) \
else if (oc.name == v) \
{ \
zn->egStorage[d].t = \
scxt::modulation::secondsToNormalizedEnvTime(std::atof(oc.value.c_str())); \
}

APPLYEG("ampeg_attack", 0, a)
APPLYEG("ampeg_decay", 0, d)
APPLYEG("ampeg_release", 0, r)
else
{
if (n != "Group")
SCLOG(" Skipped " << n << "-originated OpCode for region: "
<< oc.name << " -> " << oc.value);
}
}
}
int variantIndex{-1};
if (roundRobinPosition > 0)
{
bool attached{false};

for (const auto &z : *group)
{
if (z->mapping.rootKey == rk && z->mapping.keyboardRange.keyStart == ks &&
z->mapping.keyboardRange.keyEnd == ke &&
z->mapping.velocityRange.velStart == vs &&
z->mapping.velocityRange.velEnd == ve)
if (z->mapping.rootKey == zn->mapping.rootKey &&
z->mapping.keyboardRange == zn->mapping.keyboardRange &&
z->mapping.velocityRange == zn->mapping.velocityRange)
{
int idx = roundRobinPosition - 1;
z->attachToSampleAtVariation(*e.getSampleManager(), sid, idx,
engine::Zone::ENDPOINTS);
variantIndex = idx;
z->attachToSampleAtVariation(*e.getSampleManager(), sid, idx, loadInfo);
attached = true;
break;
}
Expand All @@ -237,100 +320,26 @@ bool importSFZ(const fs::path &f, engine::Engine &e)
}
else
{
auto zn = std::make_unique<engine::Zone>(sid);
// SFZ defaults
zn->mapping.rootKey = 60;
zn->mapping.keyboardRange.keyStart = 0;
zn->mapping.keyboardRange.keyEnd = 127;
zn->mapping.velocityRange.velStart = 0;
zn->mapping.velocityRange.velEnd = 127;
variantIndex = 0;
zn->attachToSample(*e.getSampleManager(), 0, loadInfo);
}

for (const auto &[n, ls] :
{std::make_pair(std::string("Group"), currentGroupOpcodes), {"Region", list}})
if (variantIndex >= 0)
{
if (loop_start >= 0 || loop_end >= 0)
{
for (auto &oc : ls)
{
if (oc.name == "pitch_keycenter")
{
zn->mapping.rootKey = parseMidiNote(oc.value);
}
else if (oc.name == "lokey")
{
zn->mapping.keyboardRange.keyStart = parseMidiNote(oc.value);
}
else if (oc.name == "hikey")
{
zn->mapping.keyboardRange.keyEnd = parseMidiNote(oc.value);
}
else if (oc.name == "key")
{
auto pmn = parseMidiNote(oc.value);
zn->mapping.rootKey = pmn;
zn->mapping.keyboardRange.keyStart = pmn;
zn->mapping.keyboardRange.keyEnd = pmn;
}
else if (oc.name == "lovel")
{
zn->mapping.velocityRange.velStart = std::atol(oc.value.c_str());
}
else if (oc.name == "hivel")
{
zn->mapping.velocityRange.velEnd = std::atol(oc.value.c_str());
}
else if (oc.name == "sample" || oc.name == "seq_position")
{
// dealt with above
}
else if (oc.name == "ampeg_sustain")
{
zn->egStorage[0].s = std::atof(oc.value.c_str()) * 0.01;
}
else if (oc.name == "volume")
{
zn->mapping.amplitude = std::atof(oc.value.c_str()); // decibels
}
else if (oc.name == "tune")
{
// Tune is supplied in cents. Our pitch offset is in semitones
zn->mapping.pitchOffset = std::atof(oc.value.c_str()) * 0.01;
}
else if (oc.name == "loop_mode")
{
if (oc.value == "loop_continuous")
{
// FIXME: In round robin looping modes this is probably wrong
zn->variantData.variants[0].loopActive = true;
zn->variantData.variants[0].loopMode =
engine::Zone::LOOP_DURING_VOICE;
}
else
{
SCLOG("SFZ Unsupported loop_mode : " << oc.value);
}
}

#define APPLYEG(v, d, t) \
else if (oc.name == v) \
{ \
zn->egStorage[d].t = \
scxt::modulation::secondsToNormalizedEnvTime(std::atof(oc.value.c_str())); \
}

APPLYEG("ampeg_attack", 0, a)
APPLYEG("ampeg_decay", 0, d)
APPLYEG("ampeg_release", 0, r)
else
{
if (n != "Group")
SCLOG(" Skipped " << n << "-originated OpCode for region: "
<< oc.name << " -> " << oc.value);
}
}
zn->variantData.variants[variantIndex].startLoop =
std::max((int64_t)0, loop_start);
zn->variantData.variants[variantIndex].endLoop =
std::max({(int64_t)0, loop_start + 1, loop_end});
}
zn->attachToSample(*e.getSampleManager(), 0,
engine::Zone::SampleInformationRead::ENDPOINTS);
}

if (roundRobinPosition <= 0)
{
group->addZone(zn);
}

if (firstGroupWithZonesAdded == -1)
{
firstGroupWithZonesAdded = groupId;
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