66 |
Compressed = (waveList->GetSubChunk(CHUNK_ID_EWAV)); |
Compressed = (waveList->GetSubChunk(CHUNK_ID_EWAV)); |
67 |
if (Compressed) { |
if (Compressed) { |
68 |
ScanCompressedSample(); |
ScanCompressedSample(); |
69 |
if (!pDecompressionBuffer) { |
} |
70 |
pDecompressionBuffer = new int8_t[INITIAL_SAMPLE_BUFFER_SIZE]; |
|
71 |
DecompressionBufferSize = INITIAL_SAMPLE_BUFFER_SIZE; |
if (BitDepth > 24) throw gig::Exception("Only samples up to 24 bit supported"); |
72 |
} |
if (Compressed && Channels == 1) throw gig::Exception("Mono compressed samples not yet supported"); |
73 |
|
if (Compressed && BitDepth == 24) throw gig::Exception("24 bit compressed samples not yet supported"); |
74 |
|
|
75 |
|
// we use a buffer for decompression and for truncating 24 bit samples to 16 bit |
76 |
|
if ((Compressed || BitDepth == 24) && !pDecompressionBuffer) { |
77 |
|
pDecompressionBuffer = new int8_t[INITIAL_SAMPLE_BUFFER_SIZE]; |
78 |
|
DecompressionBufferSize = INITIAL_SAMPLE_BUFFER_SIZE; |
79 |
} |
} |
80 |
FrameOffset = 0; // just for streaming compressed samples |
FrameOffset = 0; // just for streaming compressed samples |
81 |
|
|
508 |
*/ |
*/ |
509 |
unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) { |
unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) { |
510 |
if (SampleCount == 0) return 0; |
if (SampleCount == 0) return 0; |
511 |
if (!Compressed) return pCkData->Read(pBuffer, SampleCount, FrameSize); //FIXME: channel inversion due to endian correction? |
if (!Compressed) { |
512 |
|
if (BitDepth == 24) { |
513 |
|
// 24 bit sample. For now just truncate to 16 bit. |
514 |
|
int8_t* pSrc = (int8_t*)this->pDecompressionBuffer; |
515 |
|
int8_t* pDst = (int8_t*)pBuffer; |
516 |
|
unsigned long n = pCkData->Read(pSrc, SampleCount, FrameSize); |
517 |
|
for (int i = SampleCount * (FrameSize / 3) ; i > 0 ; i--) { |
518 |
|
pSrc++; |
519 |
|
*pDst++ = *pSrc++; |
520 |
|
*pDst++ = *pSrc++; |
521 |
|
} |
522 |
|
return SampleCount; |
523 |
|
} else { |
524 |
|
return pCkData->Read(pBuffer, SampleCount, FrameSize); //FIXME: channel inversion due to endian correction? |
525 |
|
} |
526 |
|
} |
527 |
else { //FIXME: no support for mono compressed samples yet, are there any? |
else { //FIXME: no support for mono compressed samples yet, are there any? |
528 |
if (this->SamplePos >= this->SamplesTotal) return 0; |
if (this->SamplePos >= this->SamplesTotal) return 0; |
529 |
//TODO: efficiency: we simply assume here that all frames are compressed, maybe we should test for an average compression rate |
//TODO: efficiency: we simply assume here that all frames are compressed, maybe we should test for an average compression rate |
857 |
pVelocityAttenuationTable = (*pVelocityTables)[tableKey]; |
pVelocityAttenuationTable = (*pVelocityTables)[tableKey]; |
858 |
} |
} |
859 |
else { |
else { |
860 |
pVelocityAttenuationTable = |
pVelocityAttenuationTable = |
861 |
CreateVelocityTable(VelocityResponseCurve, |
CreateVelocityTable(VelocityResponseCurve, |
862 |
VelocityResponseDepth, |
VelocityResponseDepth, |
863 |
VelocityResponseCurveScaling); |
VelocityResponseCurveScaling); |
1014 |
} |
} |
1015 |
|
|
1016 |
double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) { |
double* DimensionRegion::CreateVelocityTable(curve_type_t curveType, uint8_t depth, uint8_t scaling) { |
1017 |
|
|
1018 |
// line-segment approximations of the 15 velocity curves |
// line-segment approximations of the 15 velocity curves |
1019 |
|
|
1020 |
// linear |
// linear |
1026 |
|
|
1027 |
// non-linear |
// non-linear |
1028 |
const int non0[] = { 1, 4, 24, 5, 57, 17, 92, 57, 122, 127, 127, 127 }; |
const int non0[] = { 1, 4, 24, 5, 57, 17, 92, 57, 122, 127, 127, 127 }; |
1029 |
const int non1[] = { 1, 4, 46, 9, 93, 56, 118, 106, 123, 127, |
const int non1[] = { 1, 4, 46, 9, 93, 56, 118, 106, 123, 127, |
1030 |
127, 127 }; |
127, 127 }; |
1031 |
const int non2[] = { 1, 4, 46, 9, 57, 20, 102, 107, 107, 127, |
const int non2[] = { 1, 4, 46, 9, 57, 20, 102, 107, 107, 127, |
1032 |
127, 127 }; |
127, 127 }; |
1033 |
const int non3[] = { 1, 15, 10, 19, 67, 73, 80, 80, 90, 98, 98, 127, |
const int non3[] = { 1, 15, 10, 19, 67, 73, 80, 80, 90, 98, 98, 127, |
1034 |
127, 127 }; |
127, 127 }; |
1035 |
const int non4[] = { 1, 25, 33, 57, 82, 81, 92, 127, 127, 127 }; |
const int non4[] = { 1, 25, 33, 57, 82, 81, 92, 127, 127, 127 }; |
1036 |
|
|
1037 |
// special |
// special |
1038 |
const int spe0[] = { 1, 2, 76, 10, 90, 15, 95, 20, 99, 28, 103, 44, |
const int spe0[] = { 1, 2, 76, 10, 90, 15, 95, 20, 99, 28, 103, 44, |
1039 |
113, 127, 127, 127 }; |
113, 127, 127, 127 }; |
1040 |
const int spe1[] = { 1, 2, 27, 5, 67, 18, 89, 29, 95, 35, 107, 67, |
const int spe1[] = { 1, 2, 27, 5, 67, 18, 89, 29, 95, 35, 107, 67, |
1041 |
118, 127, 127, 127 }; |
118, 127, 127, 127 }; |
1042 |
const int spe2[] = { 1, 1, 33, 1, 53, 5, 61, 13, 69, 32, 79, 74, |
const int spe2[] = { 1, 1, 33, 1, 53, 5, 61, 13, 69, 32, 79, 74, |
1043 |
85, 90, 91, 127, 127, 127 }; |
85, 90, 91, 127, 127, 127 }; |
1044 |
const int spe3[] = { 1, 32, 28, 35, 66, 48, 89, 59, 95, 65, 99, 73, |
const int spe3[] = { 1, 32, 28, 35, 66, 48, 89, 59, 95, 65, 99, 73, |
1045 |
117, 127, 127, 127 }; |
117, 127, 127, 127 }; |
1046 |
const int spe4[] = { 1, 4, 23, 5, 49, 13, 57, 17, 92, 57, 122, 127, |
const int spe4[] = { 1, 4, 23, 5, 49, 13, 57, 17, 92, 57, 122, 127, |
1047 |
127, 127 }; |
127, 127 }; |
1048 |
|
|
1049 |
const int* const curves[] = { non0, non1, non2, non3, non4, |
const int* const curves[] = { non0, non1, non2, non3, non4, |
1050 |
lin0, lin1, lin2, lin3, lin4, |
lin0, lin1, lin2, lin3, lin4, |
1051 |
spe0, spe1, spe2, spe3, spe4 }; |
spe0, spe1, spe2, spe3, spe4 }; |
1052 |
|
|
1053 |
double* const table = new double[128]; |
double* const table = new double[128]; |
1054 |
|
|
1055 |
const int* curve = curves[curveType * 5 + depth]; |
const int* curve = curves[curveType * 5 + depth]; |
1056 |
const int s = scaling == 0 ? 20 : scaling; // 0 or 20 means no scaling |
const int s = scaling == 0 ? 20 : scaling; // 0 or 20 means no scaling |
1057 |
|
|
1058 |
table[0] = 0; |
table[0] = 0; |
1059 |
for (int x = 1 ; x < 128 ; x++) { |
for (int x = 1 ; x < 128 ; x++) { |
1060 |
|
|
1061 |
if (x > curve[2]) curve += 2; |
if (x > curve[2]) curve += 2; |
1062 |
double y = curve[1] + (x - curve[0]) * |
double y = curve[1] + (x - curve[0]) * |
1063 |
(double(curve[3] - curve[1]) / (curve[2] - curve[0])); |
(double(curve[3] - curve[1]) / (curve[2] - curve[0])); |
1064 |
y = y / 127; |
y = y / 127; |
1065 |
|
|
1156 |
} |
} |
1157 |
} |
} |
1158 |
|
|
1159 |
|
// jump to start of the wave pool indices (if not already there) |
1160 |
|
File* file = (File*) GetParent()->GetParent(); |
1161 |
|
if (file->pVersion && file->pVersion->major == 3) |
1162 |
|
_3lnk->SetPos(68); // version 3 has a different 3lnk structure |
1163 |
|
else |
1164 |
|
_3lnk->SetPos(44); |
1165 |
|
|
1166 |
// load sample references |
// load sample references |
|
_3lnk->SetPos(44); // jump to start of the wave pool indices (if not already there) |
|
1167 |
for (uint i = 0; i < DimensionRegions; i++) { |
for (uint i = 0; i < DimensionRegions; i++) { |
1168 |
uint32_t wavepoolindex = _3lnk->ReadUint32(); |
uint32_t wavepoolindex = _3lnk->ReadUint32(); |
1169 |
pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex); |
pDimensionRegions[i]->pSample = GetSampleFromWavePool(wavepoolindex); |