/** @brief Combine given list of instruments to one instrument.
*
* Takes a list of @a instruments as argument and combines them to one single
* new @a output instrument. For this task, it will create a dimension of type
* given by @a mainDimension in the new instrument and copies the source
* instruments to those dimension zones.
*
* @param instruments - (input) list of instruments that shall be combined,
* they will only be read, so they will be left untouched
* @param gig - (input/output) .gig file where the new combined instrument shall
* be created
* @param output - (output) on success this pointer will be set to the new
* instrument being created
* @param mainDimension - the dimension that shall be used to combine the
* instruments
* @throw RIFF::Exception on any kinds of errors
*/
static void combineInstruments(std::vector<gig::Instrument*>& instruments, gig::File* gig, gig::Instrument*& output, gig::dimension_t mainDimension) {
output = NULL;
// divide the individual regions to (probably even smaller) groups of
// regions, coping with the fact that the source regions of the instruments
// might have quite different range sizes and start and end points
RegionGroups groups = groupByRegionIntersections(instruments);
#if DEBUG_COMBINE_INSTRUMENTS
std::cout << std::endl << "New regions: " << std::flush;
printRanges(groups);
std::cout << std::endl;
#endif
if (groups.empty())
throw gig::Exception(_("No regions found to create a new instrument with."));
// create a new output instrument
gig::Instrument* outInstr = gig->AddInstrument();
outInstr->pInfo->Name = _("NEW COMBINATION");
// Distinguishing in the following code block between 'horizontal' and
// 'vertical' regions. The 'horizontal' ones are meant to be the key ranges
// in the output instrument, while the 'vertical' regions are meant to be
// the set of source regions that shall be layered to that 'horizontal'
// region / key range. It is important to know, that the key ranges defined
// in the 'horizontal' and 'vertical' regions might differ.
// merge the instruments to the new output instrument
for (RegionGroups::iterator itGroup = groups.begin();
itGroup != groups.end(); ++itGroup) // iterate over 'horizontal' / target regions ...
{
gig::Region* outRgn = outInstr->AddRegion();
outRgn->SetKeyRange(itGroup->first.low, itGroup->first.high);
#if DEBUG_COMBINE_INSTRUMENTS
printf("---> Start target region %d..%d\n", itGroup->first.low, itGroup->first.high);
#endif
// detect the total amount of zones required for the given main
// dimension to build up this combi for current key range
int iTotalZones = 0;
for (RegionGroup::iterator itRgn = itGroup->second.begin();
itRgn != itGroup->second.end(); ++itRgn)
{
gig::Region* inRgn = itRgn->second;
gig::dimension_def_t* def = inRgn->GetDimensionDefinition(mainDimension);
iTotalZones += (def) ? def->zones : 1;
}
#if DEBUG_COMBINE_INSTRUMENTS
printf("Required total zones: %d, vertical regions: %d\n", iTotalZones, itGroup->second.size());
#endif
// create all required dimensions for this output region
// (except the main dimension used for separating the individual
// instruments, we create that particular dimension as next step)
Dimensions dims = getDimensionsForRegionGroup(itGroup->second);
// the given main dimension which is used to combine the instruments is
// created separately after the next code block, and the main dimension
// should not be part of dims here, because it also used for iterating
// all dimensions zones, which would lead to this dimensions being
// iterated twice
dims.erase(mainDimension);
{
std::vector<gig::dimension_t> skipTheseDimensions; // used to prevent a misbehavior (i.e. crash) of the combine algorithm in case one of the source instruments has a dimension with only one zone, which is not standard conform
for (Dimensions::iterator itDim = dims.begin();
itDim != dims.end(); ++itDim)
{
gig::dimension_def_t def;
def.dimension = itDim->first; // dimension type
def.zones = itDim->second.size();
def.bits = zoneCountToBits(def.zones);
if (def.zones < 2) {
addWarning(
"Attempt to create dimension with type=0x%x with only "
"ONE zone (because at least one of the source "
"instruments seems to have such a velocity dimension "
"with only ONE zone, which is odd)! Skipping this "
"dimension for now.",
(int)itDim->first
);
skipTheseDimensions.push_back(itDim->first);
continue;
}
#if DEBUG_COMBINE_INSTRUMENTS
std::cout << "Adding new regular dimension type=" << std::hex << (int)def.dimension << std::dec << ", zones=" << (int)def.zones << ", bits=" << (int)def.bits << " ... " << std::flush;
#endif
outRgn->AddDimension(&def);
#if DEBUG_COMBINE_INSTRUMENTS
std::cout << "OK" << std::endl << std::flush;
#endif
}
// prevent the following dimensions to be processed further below
// (since the respective dimension was not created above)
for (int i = 0; i < skipTheseDimensions.size(); ++i)
dims.erase(skipTheseDimensions[i]);
}
// create the main dimension (if necessary for current key range)
if (iTotalZones > 1) {
gig::dimension_def_t def;
def.dimension = mainDimension; // dimension type
def.zones = iTotalZones;
def.bits = zoneCountToBits(def.zones);
#if DEBUG_COMBINE_INSTRUMENTS
std::cout << "Adding new main combi dimension type=" << std::hex << (int)def.dimension << std::dec << ", zones=" << (int)def.zones << ", bits=" << (int)def.bits << " ... " << std::flush;
#endif
outRgn->AddDimension(&def);
#if DEBUG_COMBINE_INSTRUMENTS
std::cout << "OK" << std::endl << std::flush;
#endif
} else {
dims.erase(mainDimension);
}
// for the next task we need to have the current RegionGroup to be
// sorted by instrument in the same sequence as the 'instruments' vector
// argument passed to this function (because the std::map behind the
// 'RegionGroup' type sorts by memory address instead, and that would
// sometimes lead to the source instruments' region to be sorted into
// the wrong target layer)
OrderedRegionGroup currentGroup = sortRegionGroup(itGroup->second, instruments);
// schedule copying the source dimension regions to the target dimension
// regions
CopyAssignSchedule schedule;
int iDstMainBit = 0;
for (OrderedRegionGroup::iterator itRgn = currentGroup.begin();
itRgn != currentGroup.end(); ++itRgn) // iterate over 'vertical' / source regions ...
{
gig::Region* inRgn = itRgn->second;
#if DEBUG_COMBINE_INSTRUMENTS
printf("[source region of '%s']\n", inRgn->GetParent()->pInfo->Name.c_str());
#endif
// determine how many main dimension zones this input region requires
gig::dimension_def_t* def = inRgn->GetDimensionDefinition(mainDimension);
const int inRgnMainZones = (def) ? def->zones : 1;
for (uint iSrcMainBit = 0; iSrcMainBit < inRgnMainZones; ++iSrcMainBit, ++iDstMainBit) {
scheduleCopyDimensionRegions(
outRgn, inRgn, dims, mainDimension,
iDstMainBit, iSrcMainBit, &schedule
);
}
}
// finally copy the scheduled source -> target dimension regions
for (uint i = 0; i < schedule.size(); ++i) {
CopyAssignSchedEntry& e = schedule[i];
// backup the target DimensionRegion's current dimension zones upper
// limits (because the target DimensionRegion's upper limits are
// already defined correctly since calling AddDimension(), and the
// CopyAssign() call next, will overwrite those upper limits
// unfortunately
DimensionRegionUpperLimits dstUpperLimits = getDimensionRegionUpperLimits(e.dst);
DimensionRegionUpperLimits srcUpperLimits = getDimensionRegionUpperLimits(e.src);
// now actually copy over the current DimensionRegion
const gig::Region* const origRgn = e.dst->GetParent(); // just for sanity check below
e.dst->CopyAssign(e.src);
assert(origRgn == e.dst->GetParent()); // if gigedit is crashing here, then you must update libgig (to at least SVN r2547, v3.3.0.svn10)
// restore all original dimension zone upper limits except of the
// velocity dimension, because the velocity dimension zone sizes are
// allowed to differ for individual DimensionRegions in gig v3
// format
//
// if the main dinension is the 'velocity' dimension, then skip
// restoring the source's original velocity zone limits, because
// dealing with merging that is not implemented yet
// TODO: merge custom velocity splits if main dimension is the velocity dimension (for now equal sized velocity zones are used if mainDim is 'velocity')
if (srcUpperLimits.count(gig::dimension_velocity) && mainDimension != gig::dimension_velocity) {
if (!dstUpperLimits.count(gig::dimension_velocity)) {
addWarning("Source instrument seems to have a velocity dimension whereas new target instrument doesn't!");
} else {
dstUpperLimits[gig::dimension_velocity] =
(e.velocityZone >= e.totalSrcVelocityZones)
? 127 : srcUpperLimits[gig::dimension_velocity];
}
}
restoreDimensionRegionUpperLimits(e.dst, dstUpperLimits);
}
}
// success
output = outInstr;
}
/** @brief Schedule copying DimensionRegions from source Region to target Region.
*
* Schedules copying the entire articulation informations (including sample
* reference) from all individual DimensionRegions of source Region @a inRgn to
* target Region @a outRgn. It is expected that the required dimensions (thus
* the required dimension regions) were already created before calling this
* function.
*
* To be precise, it does the task above only for the dimension zones defined by
* the three arguments @a mainDim, @a iSrcMainBit, @a iDstMainBit, which reflect
* a selection which dimension zones shall be copied. All other dimension zones
* will not be scheduled to be copied by a single call of this function. So this
* function needs to be called several time in case all dimension regions shall
* be copied of the entire region (@a inRgn, @a outRgn).
*
* @param outRgn - where the dimension regions shall be copied to
* @param inRgn - all dimension regions that shall be copied from
* @param dims - precise dimension definitions of target region
* @param mainDim - this dimension type, in combination with @a iSrcMainBit and
* @a iDstMainBit defines a selection which dimension region
* zones shall be copied by this call of this function
* @param iDstMainBit - destination bit of @a mainDim
* @param iSrcMainBit - source bit of @a mainDim
* @param schedule - list of all DimensionRegion copy operations which is filled
* during the nested loops / recursions of this function call
* @param dimCase - just for internal purpose (function recursion), don't pass
* anything here, this function will call itself recursively
* will fill this container with concrete dimension values for
* selecting the precise dimension regions during its task
*/
static void scheduleCopyDimensionRegions(gig::Region* outRgn, gig::Region* inRgn,
Dimensions dims, gig::dimension_t mainDim,
int iDstMainBit, int iSrcMainBit,
CopyAssignSchedule* schedule,
DimensionCase dimCase = DimensionCase())
{
if (dims.empty()) { // reached deepest level of function recursion ...
CopyAssignSchedEntry e;
// resolve the respective source & destination DimensionRegion ...
uint srcDimValues[8] = {};
uint dstDimValues[8] = {};
DimensionCase srcDimCase = dimCase;
DimensionCase dstDimCase = dimCase;
srcDimCase[mainDim] = iSrcMainBit;
dstDimCase[mainDim] = iDstMainBit;
#if DEBUG_COMBINE_INSTRUMENTS
printf("-------------------------------\n");
printf("iDstMainBit=%d iSrcMainBit=%d\n", iDstMainBit, iSrcMainBit);
#endif
// first select source & target dimension region with an arbitrary
// velocity split zone, to get access to the precise individual velocity
// split zone sizes (if there is actually a velocity dimension at all,
// otherwise we already select the desired source & target dimension
// region here)
#if DEBUG_COMBINE_INSTRUMENTS
printf("src "); fflush(stdout);
#endif
fillDimValues(srcDimValues, srcDimCase, inRgn, false);
#if DEBUG_COMBINE_INSTRUMENTS
printf("dst "); fflush(stdout);
#endif
fillDimValues(dstDimValues, dstDimCase, outRgn, false);
gig::DimensionRegion* srcDimRgn = inRgn->GetDimensionRegionByValue(srcDimValues);
gig::DimensionRegion* dstDimRgn = outRgn->GetDimensionRegionByValue(dstDimValues);
#if DEBUG_COMBINE_INSTRUMENTS
printf("iDstMainBit=%d iSrcMainBit=%d\n", iDstMainBit, iSrcMainBit);
printf("srcDimRgn=%lx dstDimRgn=%lx\n", (uint64_t)srcDimRgn, (uint64_t)dstDimRgn);
printf("srcSample='%s' dstSample='%s'\n",
(!srcDimRgn->pSample ? "NULL" : srcDimRgn->pSample->pInfo->Name.c_str()),
(!dstDimRgn->pSample ? "NULL" : dstDimRgn->pSample->pInfo->Name.c_str())
);
#endif
assert(srcDimRgn->GetParent() == inRgn);
assert(dstDimRgn->GetParent() == outRgn);
// now that we have access to the precise velocity split zone upper
// limits, we can select the actual source & destination dimension
// regions we need to copy (assuming that source or target region has
// a velocity dimension)
if (outRgn->GetDimensionDefinition(gig::dimension_velocity)) {
// re-select target dimension region (with correct velocity zone)
DimensionZones dstZones = preciseDimensionZonesFor(gig::dimension_velocity, dstDimRgn);
assert(dstZones.size() > 1);
const int iDstZoneIndex =
(mainDim == gig::dimension_velocity)
? iDstMainBit : dstDimCase[gig::dimension_velocity]; // (mainDim == gig::dimension_velocity) exception case probably unnecessary here
e.velocityZone = iDstZoneIndex;
#if DEBUG_COMBINE_INSTRUMENTS
printf("dst velocity zone: %d/%d\n", iDstZoneIndex, (int)dstZones.size());
#endif
assert(uint(iDstZoneIndex) < dstZones.size());
dstDimCase[gig::dimension_velocity] = dstZones[iDstZoneIndex].low; // arbitrary value between low and high
#if DEBUG_COMBINE_INSTRUMENTS
printf("dst velocity value = %d\n", dstDimCase[gig::dimension_velocity]);
printf("dst refilled "); fflush(stdout);
#endif
fillDimValues(dstDimValues, dstDimCase, outRgn, false);
dstDimRgn = outRgn->GetDimensionRegionByValue(dstDimValues);
#if DEBUG_COMBINE_INSTRUMENTS
printf("reselected dstDimRgn=%lx\n", (uint64_t)dstDimRgn);
printf("dstSample='%s'%s\n",
(!dstDimRgn->pSample ? "NULL" : dstDimRgn->pSample->pInfo->Name.c_str()),
(dstDimRgn->pSample ? " <--- ERROR ERROR ERROR !!!!!!!!! " : "")
);
#endif
// re-select source dimension region with correct velocity zone
// (if it has a velocity dimension that is)
if (inRgn->GetDimensionDefinition(gig::dimension_velocity)) {
DimensionZones srcZones = preciseDimensionZonesFor(gig::dimension_velocity, srcDimRgn);
e.totalSrcVelocityZones = srcZones.size();
assert(srcZones.size() > 0);
if (srcZones.size() <= 1) {
addWarning("Input region has a velocity dimension with only ONE zone!");
}
int iSrcZoneIndex =
(mainDim == gig::dimension_velocity)
? iSrcMainBit : iDstZoneIndex;
if (uint(iSrcZoneIndex) >= srcZones.size())
iSrcZoneIndex = srcZones.size() - 1;
srcDimCase[gig::dimension_velocity] = srcZones[iSrcZoneIndex].low; // same zone as used above for target dimension region (no matter what the precise zone ranges are)
#if DEBUG_COMBINE_INSTRUMENTS
printf("src refilled "); fflush(stdout);
#endif
fillDimValues(srcDimValues, srcDimCase, inRgn, false);
srcDimRgn = inRgn->GetDimensionRegionByValue(srcDimValues);
#if DEBUG_COMBINE_INSTRUMENTS
printf("reselected srcDimRgn=%lx\n", (uint64_t)srcDimRgn);
printf("srcSample='%s'\n",
(!srcDimRgn->pSample ? "NULL" : srcDimRgn->pSample->pInfo->Name.c_str())
);
#endif
}
}
// Schedule copy operation of source -> target DimensionRegion for the
// time after all nested loops have been traversed. We have to postpone
// the actual copy operations this way, because otherwise it would
// overwrite informations inside the destination DimensionRegion object
// that we need to read in the code block above.
e.src = srcDimRgn;
e.dst = dstDimRgn;
schedule->push_back(e);
return; // returning from deepest level of function recursion
}
// Copying n dimensions requires n nested loops. That's why this function
// is calling itself recursively to provide the required amount of nested
// loops. With each call it pops from argument 'dims' and pushes to
// argument 'dimCase'.
Dimensions::iterator itDimension = dims.begin();
gig::dimension_t type = itDimension->first;
DimensionZones zones = itDimension->second;
dims.erase(itDimension);
int iZone = 0;
for (DimensionZones::iterator itZone = zones.begin();
itZone != zones.end(); ++itZone, ++iZone)
{
DLS::range_t zoneRange = *itZone;
gig::dimension_def_t* def = outRgn->GetDimensionDefinition(type);
dimCase[type] = (def->split_type == gig::split_type_bit) ? iZone : zoneRange.low;
// recurse until 'dims' is exhausted (and dimCase filled up with concrete value)
scheduleCopyDimensionRegions(outRgn, inRgn, dims, mainDim, iDstMainBit, iSrcMainBit, schedule, dimCase);
}
}