25 |
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|
26 |
#include "helper.h" |
#include "helper.h" |
27 |
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|
28 |
|
#include <algorithm> |
29 |
#include <math.h> |
#include <math.h> |
30 |
#include <iostream> |
#include <iostream> |
31 |
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|
256 |
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|
257 |
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258 |
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|
259 |
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// *************** Internal CRC-32 (Cyclic Redundancy Check) functions *************** |
260 |
|
// * |
261 |
|
|
262 |
|
static uint32_t* __initCRCTable() { |
263 |
|
static uint32_t res[256]; |
264 |
|
|
265 |
|
for (int i = 0 ; i < 256 ; i++) { |
266 |
|
uint32_t c = i; |
267 |
|
for (int j = 0 ; j < 8 ; j++) { |
268 |
|
c = (c & 1) ? 0xedb88320 ^ (c >> 1) : c >> 1; |
269 |
|
} |
270 |
|
res[i] = c; |
271 |
|
} |
272 |
|
return res; |
273 |
|
} |
274 |
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|
275 |
|
static const uint32_t* __CRCTable = __initCRCTable(); |
276 |
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|
277 |
|
/** |
278 |
|
* Initialize a CRC variable. |
279 |
|
* |
280 |
|
* @param crc - variable to be initialized |
281 |
|
*/ |
282 |
|
inline static void __resetCRC(uint32_t& crc) { |
283 |
|
crc = 0xffffffff; |
284 |
|
} |
285 |
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|
286 |
|
/** |
287 |
|
* Used to calculate checksums of the sample data in a gig file. The |
288 |
|
* checksums are stored in the 3crc chunk of the gig file and |
289 |
|
* automatically updated when a sample is written with Sample::Write(). |
290 |
|
* |
291 |
|
* One should call __resetCRC() to initialize the CRC variable to be |
292 |
|
* used before calling this function the first time. |
293 |
|
* |
294 |
|
* After initializing the CRC variable one can call this function |
295 |
|
* arbitrary times, i.e. to split the overall CRC calculation into |
296 |
|
* steps. |
297 |
|
* |
298 |
|
* Once the whole data was processed by __calculateCRC(), one should |
299 |
|
* call __encodeCRC() to get the final CRC result. |
300 |
|
* |
301 |
|
* @param buf - pointer to data the CRC shall be calculated of |
302 |
|
* @param bufSize - size of the data to be processed |
303 |
|
* @param crc - variable the CRC sum shall be stored to |
304 |
|
*/ |
305 |
|
static void __calculateCRC(unsigned char* buf, int bufSize, uint32_t& crc) { |
306 |
|
for (int i = 0 ; i < bufSize ; i++) { |
307 |
|
crc = __CRCTable[(crc ^ buf[i]) & 0xff] ^ (crc >> 8); |
308 |
|
} |
309 |
|
} |
310 |
|
|
311 |
|
/** |
312 |
|
* Returns the final CRC result. |
313 |
|
* |
314 |
|
* @param crc - variable previously passed to __calculateCRC() |
315 |
|
*/ |
316 |
|
inline static uint32_t __encodeCRC(const uint32_t& crc) { |
317 |
|
return crc ^ 0xffffffff; |
318 |
|
} |
319 |
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|
320 |
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|
321 |
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|
322 |
// *************** Other Internal functions *************** |
// *************** Other Internal functions *************** |
323 |
// * |
// * |
324 |
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|
342 |
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|
343 |
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|
344 |
|
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// *************** CRC *************** |
|
|
// * |
|
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|
|
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const uint32_t* CRC::table(initTable()); |
|
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|
|
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uint32_t* CRC::initTable() { |
|
|
uint32_t* res = new uint32_t[256]; |
|
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|
|
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for (int i = 0 ; i < 256 ; i++) { |
|
|
uint32_t c = i; |
|
|
for (int j = 0 ; j < 8 ; j++) { |
|
|
c = (c & 1) ? 0xedb88320 ^ (c >> 1) : c >> 1; |
|
|
} |
|
|
res[i] = c; |
|
|
} |
|
|
return res; |
|
|
} |
|
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|
345 |
// *************** Sample *************** |
// *************** Sample *************** |
346 |
// * |
// * |
347 |
|
|
367 |
* is located, 0 otherwise |
* is located, 0 otherwise |
368 |
*/ |
*/ |
369 |
Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) { |
Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset, unsigned long fileNo) : DLS::Sample((DLS::File*) pFile, waveList, WavePoolOffset) { |
370 |
static const DLS::Info::FixedStringLength fixedStringLengths[] = { |
static const DLS::Info::string_length_t fixedStringLengths[] = { |
371 |
{ CHUNK_ID_INAM, 64 }, |
{ CHUNK_ID_INAM, 64 }, |
372 |
{ 0, 0 } |
{ 0, 0 } |
373 |
}; |
}; |
374 |
pInfo->FixedStringLengths = fixedStringLengths; |
pInfo->SetFixedStringLengths(fixedStringLengths); |
375 |
Instances++; |
Instances++; |
376 |
FileNo = fileNo; |
FileNo = fileNo; |
377 |
|
|
378 |
|
__resetCRC(crc); |
379 |
|
|
380 |
pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX); |
pCk3gix = waveList->GetSubChunk(CHUNK_ID_3GIX); |
381 |
if (pCk3gix) { |
if (pCk3gix) { |
382 |
uint16_t iSampleGroup = pCk3gix->ReadInt16(); |
uint16_t iSampleGroup = pCk3gix->ReadInt16(); |
1214 |
// if this is the first write in this sample, reset the |
// if this is the first write in this sample, reset the |
1215 |
// checksum calculator |
// checksum calculator |
1216 |
if (pCkData->GetPos() == 0) { |
if (pCkData->GetPos() == 0) { |
1217 |
crc.reset(); |
__resetCRC(crc); |
1218 |
} |
} |
1219 |
if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small"); |
if (GetSize() < SampleCount) throw Exception("Could not write sample data, current sample size to small"); |
1220 |
unsigned long res; |
unsigned long res; |
1224 |
res = Channels == 2 ? pCkData->Write(pBuffer, SampleCount << 1, 2) >> 1 |
res = Channels == 2 ? pCkData->Write(pBuffer, SampleCount << 1, 2) >> 1 |
1225 |
: pCkData->Write(pBuffer, SampleCount, 2); |
: pCkData->Write(pBuffer, SampleCount, 2); |
1226 |
} |
} |
1227 |
crc.update((unsigned char *)pBuffer, SampleCount * FrameSize); |
__calculateCRC((unsigned char *)pBuffer, SampleCount * FrameSize, crc); |
1228 |
|
|
1229 |
// if this is the last write, update the checksum chunk in the |
// if this is the last write, update the checksum chunk in the |
1230 |
// file |
// file |
1231 |
if (pCkData->GetPos() == pCkData->GetSize()) { |
if (pCkData->GetPos() == pCkData->GetSize()) { |
1232 |
File* pFile = static_cast<File*>(GetParent()); |
File* pFile = static_cast<File*>(GetParent()); |
1233 |
pFile->SetSampleChecksum(this, crc.getValue()); |
pFile->SetSampleChecksum(this, __encodeCRC(crc)); |
1234 |
} |
} |
1235 |
return res; |
return res; |
1236 |
} |
} |
2373 |
|
|
2374 |
// Actual Loading |
// Actual Loading |
2375 |
|
|
2376 |
|
if (!file->GetAutoLoad()) return; |
2377 |
|
|
2378 |
LoadDimensionRegions(rgnList); |
LoadDimensionRegions(rgnList); |
2379 |
|
|
2380 |
RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK); |
RIFF::Chunk* _3lnk = rgnList->GetSubChunk(CHUNK_ID_3LNK); |
2418 |
else |
else |
2419 |
_3lnk->SetPos(44); |
_3lnk->SetPos(44); |
2420 |
|
|
2421 |
// load sample references |
// load sample references (if auto loading is enabled) |
2422 |
for (uint i = 0; i < DimensionRegions; i++) { |
if (file->GetAutoLoad()) { |
2423 |
uint32_t wavepoolindex = _3lnk->ReadUint32(); |
for (uint i = 0; i < DimensionRegions; i++) { |
2424 |
if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex); |
uint32_t wavepoolindex = _3lnk->ReadUint32(); |
2425 |
|
if (file->pWavePoolTable) pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex); |
2426 |
|
} |
2427 |
|
GetSample(); // load global region sample reference |
2428 |
} |
} |
|
GetSample(); // load global region sample reference |
|
2429 |
} else { |
} else { |
2430 |
DimensionRegions = 0; |
DimensionRegions = 0; |
2431 |
for (int i = 0 ; i < 8 ; i++) { |
for (int i = 0 ; i < 8 ; i++) { |
2924 |
} |
} |
2925 |
|
|
2926 |
|
|
2927 |
|
// *************** MidiRule *************** |
2928 |
|
// * |
2929 |
|
|
2930 |
|
MidiRuleCtrlTrigger::MidiRuleCtrlTrigger(RIFF::Chunk* _3ewg) { |
2931 |
|
_3ewg->SetPos(36); |
2932 |
|
Triggers = _3ewg->ReadUint8(); |
2933 |
|
_3ewg->SetPos(40); |
2934 |
|
ControllerNumber = _3ewg->ReadUint8(); |
2935 |
|
_3ewg->SetPos(46); |
2936 |
|
for (int i = 0 ; i < Triggers ; i++) { |
2937 |
|
pTriggers[i].TriggerPoint = _3ewg->ReadUint8(); |
2938 |
|
pTriggers[i].Descending = _3ewg->ReadUint8(); |
2939 |
|
pTriggers[i].VelSensitivity = _3ewg->ReadUint8(); |
2940 |
|
pTriggers[i].Key = _3ewg->ReadUint8(); |
2941 |
|
pTriggers[i].NoteOff = _3ewg->ReadUint8(); |
2942 |
|
pTriggers[i].Velocity = _3ewg->ReadUint8(); |
2943 |
|
pTriggers[i].OverridePedal = _3ewg->ReadUint8(); |
2944 |
|
_3ewg->ReadUint8(); |
2945 |
|
} |
2946 |
|
} |
2947 |
|
|
2948 |
|
|
2949 |
// *************** Instrument *************** |
// *************** Instrument *************** |
2950 |
// * |
// * |
2951 |
|
|
2952 |
Instrument::Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress) : DLS::Instrument((DLS::File*)pFile, insList) { |
Instrument::Instrument(File* pFile, RIFF::List* insList, progress_t* pProgress) : DLS::Instrument((DLS::File*)pFile, insList) { |
2953 |
static const DLS::Info::FixedStringLength fixedStringLengths[] = { |
static const DLS::Info::string_length_t fixedStringLengths[] = { |
2954 |
{ CHUNK_ID_INAM, 64 }, |
{ CHUNK_ID_INAM, 64 }, |
2955 |
{ CHUNK_ID_ISFT, 12 }, |
{ CHUNK_ID_ISFT, 12 }, |
2956 |
{ 0, 0 } |
{ 0, 0 } |
2957 |
}; |
}; |
2958 |
pInfo->FixedStringLengths = fixedStringLengths; |
pInfo->SetFixedStringLengths(fixedStringLengths); |
2959 |
|
|
2960 |
// Initialization |
// Initialization |
2961 |
for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL; |
for (int i = 0; i < 128; i++) RegionKeyTable[i] = NULL; |
2966 |
PianoReleaseMode = false; |
PianoReleaseMode = false; |
2967 |
DimensionKeyRange.low = 0; |
DimensionKeyRange.low = 0; |
2968 |
DimensionKeyRange.high = 0; |
DimensionKeyRange.high = 0; |
2969 |
|
pMidiRules = new MidiRule*[3]; |
2970 |
|
pMidiRules[0] = NULL; |
2971 |
|
|
2972 |
// Loading |
// Loading |
2973 |
RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART); |
RIFF::List* lart = insList->GetSubList(LIST_TYPE_LART); |
2982 |
PianoReleaseMode = dimkeystart & 0x01; |
PianoReleaseMode = dimkeystart & 0x01; |
2983 |
DimensionKeyRange.low = dimkeystart >> 1; |
DimensionKeyRange.low = dimkeystart >> 1; |
2984 |
DimensionKeyRange.high = _3ewg->ReadUint8(); |
DimensionKeyRange.high = _3ewg->ReadUint8(); |
2985 |
|
|
2986 |
|
if (_3ewg->GetSize() > 32) { |
2987 |
|
// read MIDI rules |
2988 |
|
int i = 0; |
2989 |
|
_3ewg->SetPos(32); |
2990 |
|
uint8_t id1 = _3ewg->ReadUint8(); |
2991 |
|
uint8_t id2 = _3ewg->ReadUint8(); |
2992 |
|
|
2993 |
|
if (id1 == 4 && id2 == 16) { |
2994 |
|
pMidiRules[i++] = new MidiRuleCtrlTrigger(_3ewg); |
2995 |
|
} |
2996 |
|
//TODO: all the other types of rules |
2997 |
|
|
2998 |
|
pMidiRules[i] = NULL; |
2999 |
|
} |
3000 |
} |
} |
3001 |
} |
} |
3002 |
|
|
3003 |
if (!pRegions) pRegions = new RegionList; |
if (pFile->GetAutoLoad()) { |
3004 |
RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN); |
if (!pRegions) pRegions = new RegionList; |
3005 |
if (lrgn) { |
RIFF::List* lrgn = insList->GetSubList(LIST_TYPE_LRGN); |
3006 |
RIFF::List* rgn = lrgn->GetFirstSubList(); |
if (lrgn) { |
3007 |
while (rgn) { |
RIFF::List* rgn = lrgn->GetFirstSubList(); |
3008 |
if (rgn->GetListType() == LIST_TYPE_RGN) { |
while (rgn) { |
3009 |
__notify_progress(pProgress, (float) pRegions->size() / (float) Regions); |
if (rgn->GetListType() == LIST_TYPE_RGN) { |
3010 |
pRegions->push_back(new Region(this, rgn)); |
__notify_progress(pProgress, (float) pRegions->size() / (float) Regions); |
3011 |
|
pRegions->push_back(new Region(this, rgn)); |
3012 |
|
} |
3013 |
|
rgn = lrgn->GetNextSubList(); |
3014 |
} |
} |
3015 |
rgn = lrgn->GetNextSubList(); |
// Creating Region Key Table for fast lookup |
3016 |
|
UpdateRegionKeyTable(); |
3017 |
} |
} |
|
// Creating Region Key Table for fast lookup |
|
|
UpdateRegionKeyTable(); |
|
3018 |
} |
} |
3019 |
|
|
3020 |
__notify_progress(pProgress, 1.0f); // notify done |
__notify_progress(pProgress, 1.0f); // notify done |
3033 |
} |
} |
3034 |
|
|
3035 |
Instrument::~Instrument() { |
Instrument::~Instrument() { |
3036 |
|
delete[] pMidiRules; |
3037 |
} |
} |
3038 |
|
|
3039 |
/** |
/** |
3148 |
UpdateRegionKeyTable(); |
UpdateRegionKeyTable(); |
3149 |
} |
} |
3150 |
|
|
3151 |
|
/** |
3152 |
|
* Returns a MIDI rule of the instrument. |
3153 |
|
* |
3154 |
|
* The list of MIDI rules, at least in gig v3, always contains at |
3155 |
|
* most two rules. The second rule can only be the DEF filter |
3156 |
|
* (which currently isn't supported by libgig). |
3157 |
|
* |
3158 |
|
* @param i - MIDI rule number |
3159 |
|
* @returns pointer address to MIDI rule number i or NULL if there is none |
3160 |
|
*/ |
3161 |
|
MidiRule* Instrument::GetMidiRule(int i) { |
3162 |
|
return pMidiRules[i]; |
3163 |
|
} |
3164 |
|
|
3165 |
|
|
3166 |
// *************** Group *************** |
// *************** Group *************** |
3286 |
// *************** File *************** |
// *************** File *************** |
3287 |
// * |
// * |
3288 |
|
|
3289 |
// File version 2.0, 1998-06-28 |
/// Reflects Gigasampler file format version 2.0 (1998-06-28). |
3290 |
const DLS::version_t File::VERSION_2 = { |
const DLS::version_t File::VERSION_2 = { |
3291 |
0, 2, 19980628 & 0xffff, 19980628 >> 16 |
0, 2, 19980628 & 0xffff, 19980628 >> 16 |
3292 |
}; |
}; |
3293 |
|
|
3294 |
// File version 3.0, 2003-03-31 |
/// Reflects Gigasampler file format version 3.0 (2003-03-31). |
3295 |
const DLS::version_t File::VERSION_3 = { |
const DLS::version_t File::VERSION_3 = { |
3296 |
0, 3, 20030331 & 0xffff, 20030331 >> 16 |
0, 3, 20030331 & 0xffff, 20030331 >> 16 |
3297 |
}; |
}; |
3298 |
|
|
3299 |
const DLS::Info::FixedStringLength File::FixedStringLengths[] = { |
static const DLS::Info::string_length_t _FileFixedStringLengths[] = { |
3300 |
{ CHUNK_ID_IARL, 256 }, |
{ CHUNK_ID_IARL, 256 }, |
3301 |
{ CHUNK_ID_IART, 128 }, |
{ CHUNK_ID_IART, 128 }, |
3302 |
{ CHUNK_ID_ICMS, 128 }, |
{ CHUNK_ID_ICMS, 128 }, |
3318 |
}; |
}; |
3319 |
|
|
3320 |
File::File() : DLS::File() { |
File::File() : DLS::File() { |
3321 |
|
bAutoLoad = true; |
3322 |
*pVersion = VERSION_3; |
*pVersion = VERSION_3; |
3323 |
pGroups = NULL; |
pGroups = NULL; |
3324 |
pInfo->FixedStringLengths = FixedStringLengths; |
pInfo->SetFixedStringLengths(_FileFixedStringLengths); |
3325 |
pInfo->ArchivalLocation = String(256, ' '); |
pInfo->ArchivalLocation = String(256, ' '); |
3326 |
|
|
3327 |
// add some mandatory chunks to get the file chunks in right |
// add some mandatory chunks to get the file chunks in right |
3334 |
} |
} |
3335 |
|
|
3336 |
File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) { |
File::File(RIFF::File* pRIFF) : DLS::File(pRIFF) { |
3337 |
|
bAutoLoad = true; |
3338 |
pGroups = NULL; |
pGroups = NULL; |
3339 |
pInfo->FixedStringLengths = FixedStringLengths; |
pInfo->SetFixedStringLengths(_FileFixedStringLengths); |
3340 |
} |
} |
3341 |
|
|
3342 |
File::~File() { |
File::~File() { |
3404 |
pSamples->erase(iter); |
pSamples->erase(iter); |
3405 |
delete pSample; |
delete pSample; |
3406 |
|
|
3407 |
|
SampleList::iterator tmp = SamplesIterator; |
3408 |
// remove all references to the sample |
// remove all references to the sample |
3409 |
for (Instrument* instrument = GetFirstInstrument() ; instrument ; |
for (Instrument* instrument = GetFirstInstrument() ; instrument ; |
3410 |
instrument = GetNextInstrument()) { |
instrument = GetNextInstrument()) { |
3419 |
} |
} |
3420 |
} |
} |
3421 |
} |
} |
3422 |
|
SamplesIterator = tmp; // restore iterator |
3423 |
} |
} |
3424 |
|
|
3425 |
void File::LoadSamples() { |
void File::LoadSamples() { |
3510 |
progress_t subprogress; |
progress_t subprogress; |
3511 |
__divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask |
__divide_progress(pProgress, &subprogress, 3.0f, 0.0f); // randomly schedule 33% for this subtask |
3512 |
__notify_progress(&subprogress, 0.0f); |
__notify_progress(&subprogress, 0.0f); |
3513 |
GetFirstSample(&subprogress); // now force all samples to be loaded |
if (GetAutoLoad()) |
3514 |
|
GetFirstSample(&subprogress); // now force all samples to be loaded |
3515 |
__notify_progress(&subprogress, 1.0f); |
__notify_progress(&subprogress, 1.0f); |
3516 |
|
|
3517 |
// instrument loading subtask |
// instrument loading subtask |
3918 |
} |
} |
3919 |
} |
} |
3920 |
|
|
3921 |
|
/** |
3922 |
|
* Enable / disable automatic loading. By default this properyt is |
3923 |
|
* enabled and all informations are loaded automatically. However |
3924 |
|
* loading all Regions, DimensionRegions and especially samples might |
3925 |
|
* take a long time for large .gig files, and sometimes one might only |
3926 |
|
* be interested in retrieving very superficial informations like the |
3927 |
|
* amount of instruments and their names. In this case one might disable |
3928 |
|
* automatic loading to avoid very slow response times. |
3929 |
|
* |
3930 |
|
* @e CAUTION: by disabling this property many pointers (i.e. sample |
3931 |
|
* references) and informations will have invalid or even undefined |
3932 |
|
* data! This feature is currently only intended for retrieving very |
3933 |
|
* superficial informations in a very fast way. Don't use it to retrieve |
3934 |
|
* details like synthesis informations or even to modify .gig files! |
3935 |
|
*/ |
3936 |
|
void File::SetAutoLoad(bool b) { |
3937 |
|
bAutoLoad = b; |
3938 |
|
} |
3939 |
|
|
3940 |
|
/** |
3941 |
|
* Returns whether automatic loading is enabled. |
3942 |
|
* @see SetAutoLoad() |
3943 |
|
*/ |
3944 |
|
bool File::GetAutoLoad() { |
3945 |
|
return bAutoLoad; |
3946 |
|
} |
3947 |
|
|
3948 |
|
|
3949 |
|
|
3950 |
// *************** Exception *************** |
// *************** Exception *************** |