2 |
* * |
* * |
3 |
* libgig - C++ cross-platform Gigasampler format file access library * |
* libgig - C++ cross-platform Gigasampler format file access library * |
4 |
* * |
* * |
5 |
* Copyright (C) 2003-2014 by Christian Schoenebeck * |
* Copyright (C) 2003-2016 by Christian Schoenebeck * |
6 |
* <cuse@users.sourceforge.net> * |
* <cuse@users.sourceforge.net> * |
7 |
* * |
* * |
8 |
* This library is free software; you can redistribute it and/or modify * |
* This library is free software; you can redistribute it and/or modify * |
711 |
* @param WavePoolOffset - offset of this sample data from wave pool |
* @param WavePoolOffset - offset of this sample data from wave pool |
712 |
* ('wvpl') list chunk |
* ('wvpl') list chunk |
713 |
*/ |
*/ |
714 |
Sample::Sample(File* pFile, RIFF::List* waveList, unsigned long WavePoolOffset) : Resource(pFile, waveList) { |
Sample::Sample(File* pFile, RIFF::List* waveList, file_offset_t WavePoolOffset) : Resource(pFile, waveList) { |
715 |
pWaveList = waveList; |
pWaveList = waveList; |
716 |
ulWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE; |
ullWavePoolOffset = WavePoolOffset - LIST_HEADER_SIZE(waveList->GetFile()->GetFileOffsetSize()); |
717 |
pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT); |
pCkFormat = waveList->GetSubChunk(CHUNK_ID_FMT); |
718 |
pCkData = waveList->GetSubChunk(CHUNK_ID_DATA); |
pCkData = waveList->GetSubChunk(CHUNK_ID_DATA); |
719 |
if (pCkFormat) { |
if (pCkFormat) { |
793 |
Resize(orig->GetSize()); |
Resize(orig->GetSize()); |
794 |
char* buf = (char*) LoadSampleData(); |
char* buf = (char*) LoadSampleData(); |
795 |
Sample* pOrig = (Sample*) orig; //HACK: circumventing the constness here for now |
Sample* pOrig = (Sample*) orig; //HACK: circumventing the constness here for now |
796 |
const unsigned long restorePos = pOrig->pCkData->GetPos(); |
const file_offset_t restorePos = pOrig->pCkData->GetPos(); |
797 |
pOrig->SetPos(0); |
pOrig->SetPos(0); |
798 |
for (unsigned long todo = pOrig->GetSize(), i = 0; todo; ) { |
for (file_offset_t todo = pOrig->GetSize(), i = 0; todo; ) { |
799 |
const int iReadAtOnce = 64*1024; |
const int iReadAtOnce = 64*1024; |
800 |
unsigned long n = (iReadAtOnce < todo) ? iReadAtOnce : todo; |
file_offset_t n = (iReadAtOnce < todo) ? iReadAtOnce : todo; |
801 |
n = pOrig->Read(&buf[i], n); |
n = pOrig->Read(&buf[i], n); |
802 |
if (!n) break; |
if (!n) break; |
803 |
todo -= n; |
todo -= n; |
855 |
* @returns number of sample points or 0 if FormatTag != DLS_WAVE_FORMAT_PCM |
* @returns number of sample points or 0 if FormatTag != DLS_WAVE_FORMAT_PCM |
856 |
* @see FrameSize, FormatTag |
* @see FrameSize, FormatTag |
857 |
*/ |
*/ |
858 |
unsigned long Sample::GetSize() const { |
file_offset_t Sample::GetSize() const { |
859 |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; |
860 |
return (pCkData) ? pCkData->GetSize() / FrameSize : 0; |
return (pCkData) ? pCkData->GetSize() / FrameSize : 0; |
861 |
} |
} |
913 |
* @throws Exception if no data RIFF chunk was created for the sample yet |
* @throws Exception if no data RIFF chunk was created for the sample yet |
914 |
* @see FrameSize, FormatTag |
* @see FrameSize, FormatTag |
915 |
*/ |
*/ |
916 |
unsigned long Sample::SetPos(unsigned long SampleCount, RIFF::stream_whence_t Whence) { |
file_offset_t Sample::SetPos(file_offset_t SampleCount, RIFF::stream_whence_t Whence) { |
917 |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format |
918 |
if (!pCkData) throw Exception("No data chunk created for sample yet, call Sample::Resize() to create one"); |
if (!pCkData) throw Exception("No data chunk created for sample yet, call Sample::Resize() to create one"); |
919 |
unsigned long orderedBytes = SampleCount * FrameSize; |
file_offset_t orderedBytes = SampleCount * FrameSize; |
920 |
unsigned long result = pCkData->SetPos(orderedBytes, Whence); |
file_offset_t result = pCkData->SetPos(orderedBytes, Whence); |
921 |
return (result == orderedBytes) ? SampleCount |
return (result == orderedBytes) ? SampleCount |
922 |
: result / FrameSize; |
: result / FrameSize; |
923 |
} |
} |
931 |
* @param pBuffer destination buffer |
* @param pBuffer destination buffer |
932 |
* @param SampleCount number of sample points to read |
* @param SampleCount number of sample points to read |
933 |
*/ |
*/ |
934 |
unsigned long Sample::Read(void* pBuffer, unsigned long SampleCount) { |
file_offset_t Sample::Read(void* pBuffer, file_offset_t SampleCount) { |
935 |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format |
936 |
return pCkData->Read(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction? |
return pCkData->Read(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction? |
937 |
} |
} |
951 |
* @throws Exception if current sample size is too small |
* @throws Exception if current sample size is too small |
952 |
* @see LoadSampleData() |
* @see LoadSampleData() |
953 |
*/ |
*/ |
954 |
unsigned long Sample::Write(void* pBuffer, unsigned long SampleCount) { |
file_offset_t Sample::Write(void* pBuffer, file_offset_t SampleCount) { |
955 |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format |
if (FormatTag != DLS_WAVE_FORMAT_PCM) return 0; // failed: wave data not PCM format |
956 |
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"); |
957 |
return pCkData->Write(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction? |
return pCkData->Write(pBuffer, SampleCount, FrameSize); // FIXME: channel inversion due to endian correction? |
1047 |
Sample* Region::GetSample() { |
Sample* Region::GetSample() { |
1048 |
if (pSample) return pSample; |
if (pSample) return pSample; |
1049 |
File* file = (File*) GetParent()->GetParent(); |
File* file = (File*) GetParent()->GetParent(); |
1050 |
unsigned long soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; |
uint64_t soughtoffset = file->pWavePoolTable[WavePoolTableIndex]; |
1051 |
Sample* sample = file->GetFirstSample(); |
Sample* sample = file->GetFirstSample(); |
1052 |
while (sample) { |
while (sample) { |
1053 |
if (sample->ulWavePoolOffset == soughtoffset) return (pSample = sample); |
if (sample->ullWavePoolOffset == soughtoffset) return (pSample = sample); |
1054 |
sample = file->GetNextSample(); |
sample = file->GetNextSample(); |
1055 |
} |
} |
1056 |
return NULL; |
return NULL; |
1526 |
if (!pSamples) pSamples = new SampleList; |
if (!pSamples) pSamples = new SampleList; |
1527 |
RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); |
RIFF::List* wvpl = pRIFF->GetSubList(LIST_TYPE_WVPL); |
1528 |
if (wvpl) { |
if (wvpl) { |
1529 |
unsigned long wvplFileOffset = wvpl->GetFilePos(); |
file_offset_t wvplFileOffset = wvpl->GetFilePos(); |
1530 |
RIFF::List* wave = wvpl->GetFirstSubList(); |
RIFF::List* wave = wvpl->GetFirstSubList(); |
1531 |
while (wave) { |
while (wave) { |
1532 |
if (wave->GetListType() == LIST_TYPE_WAVE) { |
if (wave->GetListType() == LIST_TYPE_WAVE) { |
1533 |
unsigned long waveFileOffset = wave->GetFilePos(); |
file_offset_t waveFileOffset = wave->GetFilePos(); |
1534 |
pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset)); |
pSamples->push_back(new Sample(this, wave, waveFileOffset - wvplFileOffset)); |
1535 |
} |
} |
1536 |
wave = wvpl->GetNextSubList(); |
wave = wvpl->GetNextSubList(); |
1539 |
else { // Seen a dwpl list chunk instead of a wvpl list chunk in some file (officially not DLS compliant) |
else { // Seen a dwpl list chunk instead of a wvpl list chunk in some file (officially not DLS compliant) |
1540 |
RIFF::List* dwpl = pRIFF->GetSubList(LIST_TYPE_DWPL); |
RIFF::List* dwpl = pRIFF->GetSubList(LIST_TYPE_DWPL); |
1541 |
if (dwpl) { |
if (dwpl) { |
1542 |
unsigned long dwplFileOffset = dwpl->GetFilePos(); |
file_offset_t dwplFileOffset = dwpl->GetFilePos(); |
1543 |
RIFF::List* wave = dwpl->GetFirstSubList(); |
RIFF::List* wave = dwpl->GetFirstSubList(); |
1544 |
while (wave) { |
while (wave) { |
1545 |
if (wave->GetListType() == LIST_TYPE_WAVE) { |
if (wave->GetListType() == LIST_TYPE_WAVE) { |
1546 |
unsigned long waveFileOffset = wave->GetFilePos(); |
file_offset_t waveFileOffset = wave->GetFilePos(); |
1547 |
pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset)); |
pSamples->push_back(new Sample(this, wave, waveFileOffset - dwplFileOffset)); |
1548 |
} |
} |
1549 |
wave = dwpl->GetNextSubList(); |
wave = dwpl->GetNextSubList(); |
1737 |
|
|
1738 |
// update 'ptbl' chunk |
// update 'ptbl' chunk |
1739 |
const int iSamples = (pSamples) ? pSamples->size() : 0; |
const int iSamples = (pSamples) ? pSamples->size() : 0; |
1740 |
const int iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; |
int iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; |
1741 |
RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL); |
RIFF::Chunk* ptbl = pRIFF->GetSubChunk(CHUNK_ID_PTBL); |
1742 |
if (!ptbl) ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, 1 /*anything, we'll resize*/); |
if (!ptbl) ptbl = pRIFF->AddSubChunk(CHUNK_ID_PTBL, 1 /*anything, we'll resize*/); |
1743 |
const int iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples; |
int iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples; |
1744 |
ptbl->Resize(iPtblSize); |
ptbl->Resize(iPtblSize); |
1745 |
pData = (uint8_t*) ptbl->LoadChunkData(); |
pData = (uint8_t*) ptbl->LoadChunkData(); |
1746 |
WavePoolCount = iSamples; |
WavePoolCount = iSamples; |
1768 |
__notify_progress(&subprogress, 1.0); // notify subprogress done |
__notify_progress(&subprogress, 1.0); // notify subprogress done |
1769 |
} |
} |
1770 |
|
|
1771 |
|
// the RIFF file to be written might now been grown >= 4GB or might |
1772 |
|
// been shrunk < 4GB, so we might need to update the wave pool offset |
1773 |
|
// size and thus accordingly we would need to resize the wave pool |
1774 |
|
// chunk |
1775 |
|
const file_offset_t finalFileSize = pRIFF->GetRequiredFileSize(); |
1776 |
|
const bool bRequires64Bit = (finalFileSize >> 32) != 0; |
1777 |
|
if (b64BitWavePoolOffsets != bRequires64Bit) { |
1778 |
|
b64BitWavePoolOffsets = bRequires64Bit; |
1779 |
|
iPtblOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; |
1780 |
|
iPtblSize = WavePoolHeaderSize + iPtblOffsetSize * iSamples; |
1781 |
|
ptbl->Resize(iPtblSize); |
1782 |
|
} |
1783 |
|
|
1784 |
__notify_progress(pProgress, 1.0); // notify done |
__notify_progress(pProgress, 1.0); // notify done |
1785 |
} |
} |
1786 |
|
|
1896 |
const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; |
const int iOffsetSize = (b64BitWavePoolOffsets) ? 8 : 4; |
1897 |
// check if 'ptbl' chunk is large enough |
// check if 'ptbl' chunk is large enough |
1898 |
WavePoolCount = (pSamples) ? pSamples->size() : 0; |
WavePoolCount = (pSamples) ? pSamples->size() : 0; |
1899 |
const unsigned long ulRequiredSize = WavePoolHeaderSize + iOffsetSize * WavePoolCount; |
const file_offset_t ulRequiredSize = WavePoolHeaderSize + iOffsetSize * WavePoolCount; |
1900 |
if (ptbl->GetSize() < ulRequiredSize) throw Exception("Fatal error, 'ptbl' chunk too small"); |
if (ptbl->GetSize() < ulRequiredSize) throw Exception("Fatal error, 'ptbl' chunk too small"); |
1901 |
// save the 'ptbl' chunk's current read/write position |
// save the 'ptbl' chunk's current read/write position |
1902 |
unsigned long ulOriginalPos = ptbl->GetPos(); |
file_offset_t ullOriginalPos = ptbl->GetPos(); |
1903 |
// update headers |
// update headers |
1904 |
ptbl->SetPos(0); |
ptbl->SetPos(0); |
1905 |
uint32_t tmp = WavePoolHeaderSize; |
uint32_t tmp = WavePoolHeaderSize; |
1922 |
} |
} |
1923 |
} |
} |
1924 |
// restore 'ptbl' chunk's original read/write position |
// restore 'ptbl' chunk's original read/write position |
1925 |
ptbl->SetPos(ulOriginalPos); |
ptbl->SetPos(ullOriginalPos); |
1926 |
} |
} |
1927 |
|
|
1928 |
/** |
/** |
1945 |
SampleList::iterator iter = pSamples->begin(); |
SampleList::iterator iter = pSamples->begin(); |
1946 |
SampleList::iterator end = pSamples->end(); |
SampleList::iterator end = pSamples->end(); |
1947 |
for (int i = 0 ; iter != end ; ++iter, i++) { |
for (int i = 0 ; iter != end ; ++iter, i++) { |
1948 |
uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE; |
uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE(pRIFF->GetFileOffsetSize()); |
1949 |
(*iter)->ulWavePoolOffset = _64BitOffset; |
(*iter)->ullWavePoolOffset = _64BitOffset; |
1950 |
pWavePoolTableHi[i] = (uint32_t) (_64BitOffset >> 32); |
pWavePoolTableHi[i] = (uint32_t) (_64BitOffset >> 32); |
1951 |
pWavePoolTable[i] = (uint32_t) _64BitOffset; |
pWavePoolTable[i] = (uint32_t) _64BitOffset; |
1952 |
} |
} |
1954 |
SampleList::iterator iter = pSamples->begin(); |
SampleList::iterator iter = pSamples->begin(); |
1955 |
SampleList::iterator end = pSamples->end(); |
SampleList::iterator end = pSamples->end(); |
1956 |
for (int i = 0 ; iter != end ; ++iter, i++) { |
for (int i = 0 ; iter != end ; ++iter, i++) { |
1957 |
uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE; |
uint64_t _64BitOffset = (*iter)->pWaveList->GetFilePos() - wvplFileOffset - LIST_HEADER_SIZE(pRIFF->GetFileOffsetSize()); |
1958 |
(*iter)->ulWavePoolOffset = _64BitOffset; |
(*iter)->ullWavePoolOffset = _64BitOffset; |
1959 |
pWavePoolTable[i] = (uint32_t) _64BitOffset; |
pWavePoolTable[i] = (uint32_t) _64BitOffset; |
1960 |
} |
} |
1961 |
} |
} |