1 |
/*************************************************************************** |
/*************************************************************************** |
2 |
* * |
* * |
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* libgig - C++ cross-platform Gigasampler format file loader library * |
* libgig - C++ cross-platform Gigasampler format file access library * |
4 |
* * |
* * |
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* Copyright (C) 2003-2005 by Christian Schoenebeck * |
* Copyright (C) 2003-2009 by Christian Schoenebeck * |
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* <cuse@users.sourceforge.net> * |
* <cuse@users.sourceforge.net> * |
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* * |
* * |
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* This library is free software; you can redistribute it and/or modify * |
* This library is free software; you can redistribute it and/or modify * |
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* MA 02111-1307 USA * |
* MA 02111-1307 USA * |
22 |
***************************************************************************/ |
***************************************************************************/ |
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#include <algorithm> |
25 |
#include <string.h> |
#include <string.h> |
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27 |
#include "RIFF.h" |
#include "RIFF.h" |
30 |
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|
31 |
namespace RIFF { |
namespace RIFF { |
32 |
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33 |
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// *************** Internal functions ************** |
34 |
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// * |
35 |
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|
36 |
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/// Returns a human readable path of the given chunk. |
37 |
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static String __resolveChunkPath(Chunk* pCk) { |
38 |
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String sPath; |
39 |
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for (Chunk* pChunk = pCk; pChunk; pChunk = pChunk->GetParent()) { |
40 |
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if (pChunk->GetChunkID() == CHUNK_ID_LIST) { |
41 |
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List* pList = (List*) pChunk; |
42 |
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sPath = "->'" + pList->GetListTypeString() + "'" + sPath; |
43 |
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} else { |
44 |
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sPath = "->'" + pChunk->GetChunkIDString() + "'" + sPath; |
45 |
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} |
46 |
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} |
47 |
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return sPath; |
48 |
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} |
49 |
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50 |
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51 |
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52 |
// *************** Chunk ************** |
// *************** Chunk ************** |
53 |
// * |
// * |
54 |
|
|
90 |
} |
} |
91 |
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|
92 |
Chunk::~Chunk() { |
Chunk::~Chunk() { |
93 |
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pFile->UnlogResized(this); |
94 |
if (pChunkData) delete[] pChunkData; |
if (pChunkData) delete[] pChunkData; |
95 |
} |
} |
96 |
|
|
102 |
if (lseek(pFile->hFileRead, fPos, SEEK_SET) != -1) { |
if (lseek(pFile->hFileRead, fPos, SEEK_SET) != -1) { |
103 |
read(pFile->hFileRead, &ChunkID, 4); |
read(pFile->hFileRead, &ChunkID, 4); |
104 |
read(pFile->hFileRead, &CurrentChunkSize, 4); |
read(pFile->hFileRead, &CurrentChunkSize, 4); |
105 |
|
#elif defined(WIN32) |
106 |
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if (SetFilePointer(pFile->hFileRead, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) { |
107 |
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DWORD dwBytesRead; |
108 |
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ReadFile(pFile->hFileRead, &ChunkID, 4, &dwBytesRead, NULL); |
109 |
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ReadFile(pFile->hFileRead, &CurrentChunkSize, 4, &dwBytesRead, NULL); |
110 |
#else |
#else |
111 |
if (!fseek(pFile->hFileRead, fPos, SEEK_SET)) { |
if (!fseek(pFile->hFileRead, fPos, SEEK_SET)) { |
112 |
fread(&ChunkID, 4, 1, pFile->hFileRead); |
fread(&ChunkID, 4, 1, pFile->hFileRead); |
155 |
write(pFile->hFileWrite, &uiNewChunkID, 4); |
write(pFile->hFileWrite, &uiNewChunkID, 4); |
156 |
write(pFile->hFileWrite, &uiNewChunkSize, 4); |
write(pFile->hFileWrite, &uiNewChunkSize, 4); |
157 |
} |
} |
158 |
|
#elif defined(WIN32) |
159 |
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if (SetFilePointer(pFile->hFileWrite, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) { |
160 |
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DWORD dwBytesWritten; |
161 |
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WriteFile(pFile->hFileWrite, &uiNewChunkID, 4, &dwBytesWritten, NULL); |
162 |
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WriteFile(pFile->hFileWrite, &uiNewChunkSize, 4, &dwBytesWritten, NULL); |
163 |
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} |
164 |
#else |
#else |
165 |
if (!fseek(pFile->hFileWrite, fPos, SEEK_SET)) { |
if (!fseek(pFile->hFileWrite, fPos, SEEK_SET)) { |
166 |
fwrite(&uiNewChunkID, 4, 1, pFile->hFileWrite); |
fwrite(&uiNewChunkID, 4, 1, pFile->hFileWrite); |
236 |
* - RIFF::stream_closed : |
* - RIFF::stream_closed : |
237 |
* the data stream was closed somehow, no more reading possible |
* the data stream was closed somehow, no more reading possible |
238 |
* - RIFF::stream_end_reached : |
* - RIFF::stream_end_reached : |
239 |
* alreaady reached the end of the chunk data, no more reading |
* already reached the end of the chunk data, no more reading |
240 |
* possible without SetPos() |
* possible without SetPos() |
241 |
*/ |
*/ |
242 |
stream_state_t Chunk::GetState() { |
stream_state_t Chunk::GetState() { |
244 |
std::cout << "Chunk::GetState()" << std::endl; |
std::cout << "Chunk::GetState()" << std::endl; |
245 |
#endif // DEBUG |
#endif // DEBUG |
246 |
#if POSIX |
#if POSIX |
247 |
if (pFile->hFileRead == 0) return stream_closed; |
if (pFile->hFileRead == 0) return stream_closed; |
248 |
|
#elif defined (WIN32) |
249 |
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if (pFile->hFileRead == INVALID_HANDLE_VALUE) |
250 |
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return stream_closed; |
251 |
#else |
#else |
252 |
if (pFile->hFileRead == NULL) return stream_closed; |
if (pFile->hFileRead == NULL) return stream_closed; |
253 |
#endif // POSIX |
#endif // POSIX |
274 |
#if DEBUG |
#if DEBUG |
275 |
std::cout << "Chunk::Read(void*,ulong,ulong)" << std::endl; |
std::cout << "Chunk::Read(void*,ulong,ulong)" << std::endl; |
276 |
#endif // DEBUG |
#endif // DEBUG |
277 |
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if (ulStartPos == 0) return 0; // is only 0 if this is a new chunk, so nothing to read (yet) |
278 |
if (ulPos >= CurrentChunkSize) return 0; |
if (ulPos >= CurrentChunkSize) return 0; |
279 |
if (ulPos + WordCount * WordSize >= CurrentChunkSize) WordCount = (CurrentChunkSize - ulPos) / WordSize; |
if (ulPos + WordCount * WordSize >= CurrentChunkSize) WordCount = (CurrentChunkSize - ulPos) / WordSize; |
280 |
#if POSIX |
#if POSIX |
282 |
unsigned long readWords = read(pFile->hFileRead, pData, WordCount * WordSize); |
unsigned long readWords = read(pFile->hFileRead, pData, WordCount * WordSize); |
283 |
if (readWords < 1) return 0; |
if (readWords < 1) return 0; |
284 |
readWords /= WordSize; |
readWords /= WordSize; |
285 |
|
#elif defined(WIN32) |
286 |
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if (SetFilePointer(pFile->hFileRead, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return 0; |
287 |
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DWORD readWords; |
288 |
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ReadFile(pFile->hFileRead, pData, WordCount * WordSize, &readWords, NULL); |
289 |
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if (readWords < 1) return 0; |
290 |
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readWords /= WordSize; |
291 |
#else // standard C functions |
#else // standard C functions |
292 |
if (fseek(pFile->hFileRead, ulStartPos + ulPos, SEEK_SET)) return 0; |
if (fseek(pFile->hFileRead, ulStartPos + ulPos, SEEK_SET)) return 0; |
293 |
unsigned long readWords = fread(pData, WordSize, WordCount, pFile->hFileRead); |
unsigned long readWords = fread(pData, WordSize, WordCount, pFile->hFileRead); |
357 |
unsigned long writtenWords = write(pFile->hFileWrite, pData, WordCount * WordSize); |
unsigned long writtenWords = write(pFile->hFileWrite, pData, WordCount * WordSize); |
358 |
if (writtenWords < 1) throw Exception("POSIX IO Error while trying to write chunk data"); |
if (writtenWords < 1) throw Exception("POSIX IO Error while trying to write chunk data"); |
359 |
writtenWords /= WordSize; |
writtenWords /= WordSize; |
360 |
|
#elif defined(WIN32) |
361 |
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if (SetFilePointer(pFile->hFileWrite, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) { |
362 |
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throw Exception("Could not seek to position " + ToString(ulPos) + |
363 |
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" in chunk (" + ToString(ulStartPos + ulPos) + " in file)"); |
364 |
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} |
365 |
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DWORD writtenWords; |
366 |
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WriteFile(pFile->hFileWrite, pData, WordCount * WordSize, &writtenWords, NULL); |
367 |
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if (writtenWords < 1) throw Exception("Windows IO Error while trying to write chunk data"); |
368 |
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writtenWords /= WordSize; |
369 |
#else // standard C functions |
#else // standard C functions |
370 |
if (fseek(pFile->hFileWrite, ulStartPos + ulPos, SEEK_SET)) { |
if (fseek(pFile->hFileWrite, ulStartPos + ulPos, SEEK_SET)) { |
371 |
throw Exception("Could not seek to position " + ToString(ulPos) + |
throw Exception("Could not seek to position " + ToString(ulPos) + |
727 |
* @see ReleaseChunkData() |
* @see ReleaseChunkData() |
728 |
*/ |
*/ |
729 |
void* Chunk::LoadChunkData() { |
void* Chunk::LoadChunkData() { |
730 |
if (!pChunkData && pFile->Filename != "") { |
if (!pChunkData && pFile->Filename != "" && ulStartPos != 0) { |
731 |
#if POSIX |
#if POSIX |
732 |
if (lseek(pFile->hFileRead, ulStartPos, SEEK_SET) == -1) return NULL; |
if (lseek(pFile->hFileRead, ulStartPos, SEEK_SET) == -1) return NULL; |
733 |
|
#elif defined(WIN32) |
734 |
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if (SetFilePointer(pFile->hFileRead, ulStartPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return NULL; |
735 |
#else |
#else |
736 |
if (fseek(pFile->hFileRead, ulStartPos, SEEK_SET)) return NULL; |
if (fseek(pFile->hFileRead, ulStartPos, SEEK_SET)) return NULL; |
737 |
#endif // POSIX |
#endif // POSIX |
741 |
memset(pChunkData, 0, ulBufferSize); |
memset(pChunkData, 0, ulBufferSize); |
742 |
#if POSIX |
#if POSIX |
743 |
unsigned long readWords = read(pFile->hFileRead, pChunkData, GetSize()); |
unsigned long readWords = read(pFile->hFileRead, pChunkData, GetSize()); |
744 |
|
#elif defined(WIN32) |
745 |
|
DWORD readWords; |
746 |
|
ReadFile(pFile->hFileRead, pChunkData, GetSize(), &readWords, NULL); |
747 |
#else |
#else |
748 |
unsigned long readWords = fread(pChunkData, 1, GetSize(), pFile->hFileRead); |
unsigned long readWords = fread(pChunkData, 1, GetSize(), pFile->hFileRead); |
749 |
#endif // POSIX |
#endif // POSIX |
796 |
* @see File::Save() |
* @see File::Save() |
797 |
*/ |
*/ |
798 |
void Chunk::Resize(int iNewSize) { |
void Chunk::Resize(int iNewSize) { |
799 |
if (iNewSize <= 0) throw Exception("Chunk size must be at least one byte"); |
if (iNewSize <= 0) |
800 |
|
throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(this)); |
801 |
if (NewChunkSize == iNewSize) return; |
if (NewChunkSize == iNewSize) return; |
802 |
NewChunkSize = iNewSize; |
NewChunkSize = iNewSize; |
803 |
pFile->LogAsResized(this); |
pFile->LogAsResized(this); |
832 |
if (write(pFile->hFileWrite, pChunkData, NewChunkSize) != NewChunkSize) { |
if (write(pFile->hFileWrite, pChunkData, NewChunkSize) != NewChunkSize) { |
833 |
throw Exception("Writing Chunk data (from RAM) failed"); |
throw Exception("Writing Chunk data (from RAM) failed"); |
834 |
} |
} |
835 |
|
#elif defined(WIN32) |
836 |
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SetFilePointer(pFile->hFileWrite, ulWritePos, NULL/*32 bit*/, FILE_BEGIN); |
837 |
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DWORD dwBytesWritten; |
838 |
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WriteFile(pFile->hFileWrite, pChunkData, NewChunkSize, &dwBytesWritten, NULL); |
839 |
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if (dwBytesWritten != NewChunkSize) { |
840 |
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throw Exception("Writing Chunk data (from RAM) failed"); |
841 |
|
} |
842 |
#else |
#else |
843 |
fseek(pFile->hFileWrite, ulWritePos, SEEK_SET); |
fseek(pFile->hFileWrite, ulWritePos, SEEK_SET); |
844 |
if (fwrite(pChunkData, 1, NewChunkSize, pFile->hFileWrite) != NewChunkSize) { |
if (fwrite(pChunkData, 1, NewChunkSize, pFile->hFileWrite) != NewChunkSize) { |
849 |
// move chunk data from the end of the file to the appropriate position |
// move chunk data from the end of the file to the appropriate position |
850 |
int8_t* pCopyBuffer = new int8_t[4096]; |
int8_t* pCopyBuffer = new int8_t[4096]; |
851 |
unsigned long ulToMove = (NewChunkSize < CurrentChunkSize) ? NewChunkSize : CurrentChunkSize; |
unsigned long ulToMove = (NewChunkSize < CurrentChunkSize) ? NewChunkSize : CurrentChunkSize; |
852 |
|
#if defined(WIN32) |
853 |
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DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured |
854 |
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#else |
855 |
int iBytesMoved = 1; |
int iBytesMoved = 1; |
856 |
|
#endif |
857 |
for (unsigned long ulOffset = 0; iBytesMoved > 0; ulOffset += iBytesMoved, ulToMove -= iBytesMoved) { |
for (unsigned long ulOffset = 0; iBytesMoved > 0; ulOffset += iBytesMoved, ulToMove -= iBytesMoved) { |
858 |
iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096; |
iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096; |
859 |
#if POSIX |
#if POSIX |
861 |
iBytesMoved = read(pFile->hFileRead, pCopyBuffer, iBytesMoved); |
iBytesMoved = read(pFile->hFileRead, pCopyBuffer, iBytesMoved); |
862 |
lseek(pFile->hFileWrite, ulWritePos + ulOffset, SEEK_SET); |
lseek(pFile->hFileWrite, ulWritePos + ulOffset, SEEK_SET); |
863 |
iBytesMoved = write(pFile->hFileWrite, pCopyBuffer, iBytesMoved); |
iBytesMoved = write(pFile->hFileWrite, pCopyBuffer, iBytesMoved); |
864 |
|
#elif defined(WIN32) |
865 |
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SetFilePointer(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, NULL/*32 bit*/, FILE_BEGIN); |
866 |
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ReadFile(pFile->hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
867 |
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SetFilePointer(pFile->hFileWrite, ulWritePos + ulOffset, NULL/*32 bit*/, FILE_BEGIN); |
868 |
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WriteFile(pFile->hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
869 |
#else |
#else |
870 |
fseek(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, SEEK_SET); |
fseek(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, SEEK_SET); |
871 |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, pFile->hFileRead); |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, pFile->hFileRead); |
891 |
#if POSIX |
#if POSIX |
892 |
lseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
lseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
893 |
write(pFile->hFileWrite, &cPadByte, 1); |
write(pFile->hFileWrite, &cPadByte, 1); |
894 |
|
#elif defined(WIN32) |
895 |
|
SetFilePointer(pFile->hFileWrite, ulStartPos + NewChunkSize, NULL/*32 bit*/, FILE_BEGIN); |
896 |
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DWORD dwBytesWritten; |
897 |
|
WriteFile(pFile->hFileWrite, &cPadByte, 1, &dwBytesWritten, NULL); |
898 |
#else |
#else |
899 |
fseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
fseek(pFile->hFileWrite, ulStartPos + NewChunkSize, SEEK_SET); |
900 |
fwrite(&cPadByte, 1, 1, pFile->hFileWrite); |
fwrite(&cPadByte, 1, 1, pFile->hFileWrite); |
1154 |
pSubChunks->push_back(pNewChunk); |
pSubChunks->push_back(pNewChunk); |
1155 |
(*pSubChunksMap)[uiChunkID] = pNewChunk; |
(*pSubChunksMap)[uiChunkID] = pNewChunk; |
1156 |
pNewChunk->Resize(uiBodySize); |
pNewChunk->Resize(uiBodySize); |
1157 |
|
NewChunkSize += CHUNK_HEADER_SIZE; |
1158 |
|
pFile->LogAsResized(this); |
1159 |
return pNewChunk; |
return pNewChunk; |
1160 |
} |
} |
1161 |
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|
1162 |
|
/** @brief Moves a sub chunk. |
1163 |
|
* |
1164 |
|
* Moves a sub chunk from one position in a list to another |
1165 |
|
* position in the same list. The pSrc chunk is placed before the |
1166 |
|
* pDst chunk. |
1167 |
|
* |
1168 |
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* @param pSrc - sub chunk to be moved |
1169 |
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* @param pDst - the position to move to. pSrc will be placed |
1170 |
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* before pDst. If pDst is 0, pSrc will be placed |
1171 |
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* last in list. |
1172 |
|
*/ |
1173 |
|
void List::MoveSubChunk(Chunk* pSrc, Chunk* pDst) { |
1174 |
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if (!pSubChunks) LoadSubChunks(); |
1175 |
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pSubChunks->remove(pSrc); |
1176 |
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ChunkList::iterator iter = find(pSubChunks->begin(), pSubChunks->end(), pDst); |
1177 |
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pSubChunks->insert(iter, pSrc); |
1178 |
|
} |
1179 |
|
|
1180 |
/** @brief Creates a new list sub chunk. |
/** @brief Creates a new list sub chunk. |
1181 |
* |
* |
1182 |
* Creates and adds a new list sub chunk to this list chunk. Note that |
* Creates and adds a new list sub chunk to this list chunk. Note that |
1191 |
List* pNewListChunk = new List(pFile, this, uiListType); |
List* pNewListChunk = new List(pFile, this, uiListType); |
1192 |
pSubChunks->push_back(pNewListChunk); |
pSubChunks->push_back(pNewListChunk); |
1193 |
(*pSubChunksMap)[CHUNK_ID_LIST] = pNewListChunk; |
(*pSubChunksMap)[CHUNK_ID_LIST] = pNewListChunk; |
1194 |
|
NewChunkSize += LIST_HEADER_SIZE; |
1195 |
|
pFile->LogAsResized(this); |
1196 |
return pNewListChunk; |
return pNewListChunk; |
1197 |
} |
} |
1198 |
|
|
1200 |
* |
* |
1201 |
* Removes the sub chunk given by \a pSubChunk from this list and frees |
* Removes the sub chunk given by \a pSubChunk from this list and frees |
1202 |
* it completely from RAM. The given chunk can either be a normal sub |
* it completely from RAM. The given chunk can either be a normal sub |
1203 |
* chunk or a list sub chunk. You should call File::Save() to make this |
* chunk or a list sub chunk. In case the given chunk is a list chunk, |
1204 |
* change persistent at any time. |
* all its subchunks (if any) will be removed recursively as well. You |
1205 |
|
* should call File::Save() to make this change persistent at any time. |
1206 |
* |
* |
1207 |
* @param pSubChunk - sub chunk or sub list chunk to be removed |
* @param pSubChunk - sub chunk or sub list chunk to be removed |
1208 |
*/ |
*/ |
1233 |
#if POSIX |
#if POSIX |
1234 |
lseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
lseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1235 |
read(pFile->hFileRead, &ListType, 4); |
read(pFile->hFileRead, &ListType, 4); |
1236 |
|
#elif defined(WIN32) |
1237 |
|
SetFilePointer(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN); |
1238 |
|
DWORD dwBytesRead; |
1239 |
|
ReadFile(pFile->hFileRead, &ListType, 4, &dwBytesRead, NULL); |
1240 |
#else |
#else |
1241 |
fseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
fseek(pFile->hFileRead, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1242 |
fread(&ListType, 4, 1, pFile->hFileRead); |
fread(&ListType, 4, 1, pFile->hFileRead); |
1257 |
#if POSIX |
#if POSIX |
1258 |
lseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
lseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1259 |
write(pFile->hFileWrite, &ListType, 4); |
write(pFile->hFileWrite, &ListType, 4); |
1260 |
|
#elif defined(WIN32) |
1261 |
|
SetFilePointer(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, NULL/*32 bit*/, FILE_BEGIN); |
1262 |
|
DWORD dwBytesWritten; |
1263 |
|
WriteFile(pFile->hFileWrite, &ListType, 4, &dwBytesWritten, NULL); |
1264 |
#else |
#else |
1265 |
fseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
fseek(pFile->hFileWrite, fPos + CHUNK_HEADER_SIZE, SEEK_SET); |
1266 |
fwrite(&ListType, 4, 1, pFile->hFileWrite); |
fwrite(&ListType, 4, 1, pFile->hFileWrite); |
1274 |
if (!pSubChunks) { |
if (!pSubChunks) { |
1275 |
pSubChunks = new ChunkList(); |
pSubChunks = new ChunkList(); |
1276 |
pSubChunksMap = new ChunkMap(); |
pSubChunksMap = new ChunkMap(); |
1277 |
|
#if defined(WIN32) |
1278 |
|
if (pFile->hFileRead == INVALID_HANDLE_VALUE) return; |
1279 |
|
#else |
1280 |
if (!pFile->hFileRead) return; |
if (!pFile->hFileRead) return; |
1281 |
|
#endif |
1282 |
unsigned long uiOriginalPos = GetPos(); |
unsigned long uiOriginalPos = GetPos(); |
1283 |
SetPos(0); // jump to beginning of list chunk body |
SetPos(0); // jump to beginning of list chunk body |
1284 |
while (RemainingBytes() >= CHUNK_HEADER_SIZE) { |
while (RemainingBytes() >= CHUNK_HEADER_SIZE) { |
1374 |
* "from scratch". Note: there must be no empty chunks or empty list |
* "from scratch". Note: there must be no empty chunks or empty list |
1375 |
* chunks when trying to make the new RIFF file persistent with Save()! |
* chunks when trying to make the new RIFF file persistent with Save()! |
1376 |
* |
* |
1377 |
|
* Note: by default, the RIFF file will be saved in native endian |
1378 |
|
* format; that is, as a RIFF file on little-endian machines and |
1379 |
|
* as a RIFX file on big-endian. To change this behaviour, call |
1380 |
|
* SetByteOrder() before calling Save(). |
1381 |
|
* |
1382 |
* @param FileType - four-byte identifier of the RIFF file type |
* @param FileType - four-byte identifier of the RIFF file type |
1383 |
* @see AddSubChunk(), AddSubList() |
* @see AddSubChunk(), AddSubList(), SetByteOrder() |
1384 |
*/ |
*/ |
1385 |
File::File(uint32_t FileType) : List(this) { |
File::File(uint32_t FileType) : List(this) { |
1386 |
|
#if defined(WIN32) |
1387 |
|
hFileRead = hFileWrite = INVALID_HANDLE_VALUE; |
1388 |
|
#else |
1389 |
hFileRead = hFileWrite = 0; |
hFileRead = hFileWrite = 0; |
1390 |
|
#endif |
1391 |
Mode = stream_mode_closed; |
Mode = stream_mode_closed; |
1392 |
bEndianNative = true; |
bEndianNative = true; |
1393 |
ulStartPos = RIFF_HEADER_SIZE; |
ulStartPos = RIFF_HEADER_SIZE; |
1413 |
hFileRead = hFileWrite = 0; |
hFileRead = hFileWrite = 0; |
1414 |
throw RIFF::Exception("Can't open \"" + path + "\""); |
throw RIFF::Exception("Can't open \"" + path + "\""); |
1415 |
} |
} |
1416 |
|
#elif defined(WIN32) |
1417 |
|
hFileRead = hFileWrite = CreateFile( |
1418 |
|
path.c_str(), GENERIC_READ, |
1419 |
|
FILE_SHARE_READ | FILE_SHARE_WRITE, |
1420 |
|
NULL, OPEN_EXISTING, |
1421 |
|
FILE_ATTRIBUTE_NORMAL | |
1422 |
|
FILE_FLAG_RANDOM_ACCESS, NULL |
1423 |
|
); |
1424 |
|
if (hFileRead == INVALID_HANDLE_VALUE) { |
1425 |
|
hFileRead = hFileWrite = INVALID_HANDLE_VALUE; |
1426 |
|
throw RIFF::Exception("Can't open \"" + path + "\""); |
1427 |
|
} |
1428 |
#else |
#else |
1429 |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
1430 |
if (!hFile) throw RIFF::Exception("Can't open \"" + path + "\""); |
if (!hFileRead) throw RIFF::Exception("Can't open \"" + path + "\""); |
1431 |
#endif // POSIX |
#endif // POSIX |
1432 |
Mode = stream_mode_read; |
Mode = stream_mode_read; |
1433 |
ulStartPos = RIFF_HEADER_SIZE; |
ulStartPos = RIFF_HEADER_SIZE; |
1466 |
hFileRead = hFileWrite = 0; |
hFileRead = hFileWrite = 0; |
1467 |
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
1468 |
} |
} |
1469 |
|
#elif defined(WIN32) |
1470 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1471 |
|
hFileRead = hFileWrite = CreateFile( |
1472 |
|
Filename.c_str(), GENERIC_READ, |
1473 |
|
FILE_SHARE_READ | FILE_SHARE_WRITE, |
1474 |
|
NULL, OPEN_EXISTING, |
1475 |
|
FILE_ATTRIBUTE_NORMAL | |
1476 |
|
FILE_FLAG_RANDOM_ACCESS, |
1477 |
|
NULL |
1478 |
|
); |
1479 |
|
if (hFileRead == INVALID_HANDLE_VALUE) { |
1480 |
|
hFileRead = hFileWrite = INVALID_HANDLE_VALUE; |
1481 |
|
throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
1482 |
|
} |
1483 |
#else |
#else |
1484 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1485 |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
hFileRead = hFileWrite = fopen(Filename.c_str(), "rb"); |
1486 |
if (!hFileRead) throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
if (!hFileRead) throw Exception("Could not (re)open file \"" + Filename + "\" in read mode"); |
1487 |
#endif |
#endif |
1488 |
__resetPos(); // reset read/write position of ALL 'Chunk' objects |
__resetPos(); // reset read/write position of ALL 'Chunk' objects |
1495 |
hFileRead = hFileWrite = open(Filename.c_str(), O_RDONLY | O_NONBLOCK); |
hFileRead = hFileWrite = open(Filename.c_str(), O_RDONLY | O_NONBLOCK); |
1496 |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
1497 |
} |
} |
1498 |
|
#elif defined(WIN32) |
1499 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1500 |
|
hFileRead = hFileWrite = CreateFile( |
1501 |
|
Filename.c_str(), |
1502 |
|
GENERIC_READ | GENERIC_WRITE, |
1503 |
|
FILE_SHARE_READ, |
1504 |
|
NULL, OPEN_ALWAYS, |
1505 |
|
FILE_ATTRIBUTE_NORMAL | |
1506 |
|
FILE_FLAG_RANDOM_ACCESS, |
1507 |
|
NULL |
1508 |
|
); |
1509 |
|
if (hFileRead == INVALID_HANDLE_VALUE) { |
1510 |
|
hFileRead = hFileWrite = CreateFile( |
1511 |
|
Filename.c_str(), GENERIC_READ, |
1512 |
|
FILE_SHARE_READ | FILE_SHARE_WRITE, |
1513 |
|
NULL, OPEN_EXISTING, |
1514 |
|
FILE_ATTRIBUTE_NORMAL | |
1515 |
|
FILE_FLAG_RANDOM_ACCESS, |
1516 |
|
NULL |
1517 |
|
); |
1518 |
|
throw Exception("Could not (re)open file \"" + Filename + "\" in read+write mode"); |
1519 |
|
} |
1520 |
#else |
#else |
1521 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1522 |
hFileRead = hFileWrite = fopen(path.c_str(), "r+b"); |
hFileRead = hFileWrite = fopen(Filename.c_str(), "r+b"); |
1523 |
if (!hFileRead) { |
if (!hFileRead) { |
1524 |
hFileRead = hFileWrite = fopen(path.c_str(), "rb"); |
hFileRead = hFileWrite = fopen(Filename.c_str(), "rb"); |
1525 |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
throw Exception("Could not open file \"" + Filename + "\" in read+write mode"); |
1526 |
} |
} |
1527 |
#endif |
#endif |
1531 |
#if POSIX |
#if POSIX |
1532 |
if (hFileRead) close(hFileRead); |
if (hFileRead) close(hFileRead); |
1533 |
if (hFileWrite) close(hFileWrite); |
if (hFileWrite) close(hFileWrite); |
1534 |
|
#elif defined(WIN32) |
1535 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1536 |
|
if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite); |
1537 |
#else |
#else |
1538 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1539 |
if (hFileWrite) fclose(hFileWrite); |
if (hFileWrite) fclose(hFileWrite); |
1549 |
return false; |
return false; |
1550 |
} |
} |
1551 |
|
|
1552 |
|
/** @brief Set the byte order to be used when saving. |
1553 |
|
* |
1554 |
|
* Set the byte order to be used in the file. A value of |
1555 |
|
* endian_little will create a RIFF file, endian_big a RIFX file |
1556 |
|
* and endian_native will create a RIFF file on little-endian |
1557 |
|
* machines and RIFX on big-endian machines. |
1558 |
|
* |
1559 |
|
* @param Endian - endianess to use when file is saved. |
1560 |
|
*/ |
1561 |
|
void File::SetByteOrder(endian_t Endian) { |
1562 |
|
#if WORDS_BIGENDIAN |
1563 |
|
bEndianNative = Endian != endian_little; |
1564 |
|
#else |
1565 |
|
bEndianNative = Endian != endian_big; |
1566 |
|
#endif |
1567 |
|
} |
1568 |
|
|
1569 |
/** @brief Save changes to same file. |
/** @brief Save changes to same file. |
1570 |
* |
* |
1571 |
* Make all changes of all chunks persistent by writing them to the |
* Make all changes of all chunks persistent by writing them to the |
1592 |
|
|
1593 |
// first we sum up all positive chunk size changes (and skip all negative ones) |
// first we sum up all positive chunk size changes (and skip all negative ones) |
1594 |
unsigned long ulPositiveSizeDiff = 0; |
unsigned long ulPositiveSizeDiff = 0; |
1595 |
for (ChunkList::iterator iter = ResizedChunks.begin(), end = ResizedChunks.end(); iter != end; ++iter) { |
for (std::set<Chunk*>::const_iterator iter = ResizedChunks.begin(), end = ResizedChunks.end(); iter != end; ++iter) { |
1596 |
if ((*iter)->GetNewSize() == 0) throw Exception("There is at least one empty chunk (zero size)"); |
if ((*iter)->GetNewSize() == 0) { |
1597 |
if ((*iter)->GetNewSize() + 1L > (*iter)->GetSize()) { |
throw Exception("There is at least one empty chunk (zero size): " + __resolveChunkPath(*iter)); |
|
unsigned long ulDiff = (*iter)->GetNewSize() - (*iter)->GetSize() + 1L; // +1 in case we have to add a pad byte |
|
|
ulPositiveSizeDiff += ulDiff; |
|
1598 |
} |
} |
1599 |
|
unsigned long newSizePadded = (*iter)->GetNewSize() + (*iter)->GetNewSize() % 2; |
1600 |
|
unsigned long oldSizePadded = (*iter)->GetSize() + (*iter)->GetSize() % 2; |
1601 |
|
if (newSizePadded > oldSizePadded) ulPositiveSizeDiff += newSizePadded - oldSizePadded; |
1602 |
} |
} |
1603 |
|
|
1604 |
unsigned long ulWorkingFileSize = GetFileSize(); |
unsigned long ulWorkingFileSize = GetFileSize(); |
1611 |
// ... and move current data by the same amount towards end of file. |
// ... and move current data by the same amount towards end of file. |
1612 |
int8_t* pCopyBuffer = new int8_t[4096]; |
int8_t* pCopyBuffer = new int8_t[4096]; |
1613 |
const unsigned long ulFileSize = GetSize() + RIFF_HEADER_SIZE; |
const unsigned long ulFileSize = GetSize() + RIFF_HEADER_SIZE; |
1614 |
|
#if defined(WIN32) |
1615 |
|
DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured |
1616 |
|
#else |
1617 |
int iBytesMoved = 1; |
int iBytesMoved = 1; |
1618 |
for (unsigned long ulPos = 0; iBytesMoved > 0; ulPos += iBytesMoved) { |
#endif |
1619 |
const unsigned long ulToMove = ulFileSize - ulPos; |
for (unsigned long ulPos = ulFileSize; iBytesMoved > 0; ) { |
1620 |
iBytesMoved = (ulToMove < 4096) ? ulToMove : 4096; |
iBytesMoved = (ulPos < 4096) ? ulPos : 4096; |
1621 |
|
ulPos -= iBytesMoved; |
1622 |
#if POSIX |
#if POSIX |
1623 |
lseek(hFileRead, ulPos, SEEK_SET); |
lseek(hFileRead, ulPos, SEEK_SET); |
1624 |
iBytesMoved = read(hFileRead, pCopyBuffer, iBytesMoved); |
iBytesMoved = read(hFileRead, pCopyBuffer, iBytesMoved); |
1625 |
lseek(hFileWrite, ulPos + ulPositiveSizeDiff, SEEK_SET); |
lseek(hFileWrite, ulPos + ulPositiveSizeDiff, SEEK_SET); |
1626 |
iBytesMoved = write(hFileWrite, pCopyBuffer, iBytesMoved); |
iBytesMoved = write(hFileWrite, pCopyBuffer, iBytesMoved); |
1627 |
|
#elif defined(WIN32) |
1628 |
|
SetFilePointer(hFileRead, ulPos, NULL/*32 bit*/, FILE_BEGIN); |
1629 |
|
ReadFile(hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
1630 |
|
SetFilePointer(hFileWrite, ulPos + ulPositiveSizeDiff, NULL/*32 bit*/, FILE_BEGIN); |
1631 |
|
WriteFile(hFileWrite, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL); |
1632 |
#else |
#else |
1633 |
fseek(hFileRead, ulPos, SEEK_SET); |
fseek(hFileRead, ulPos, SEEK_SET); |
1634 |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, hFileRead); |
iBytesMoved = fread(pCopyBuffer, 1, iBytesMoved, hFileRead); |
1678 |
hFileWrite = hFileRead; |
hFileWrite = hFileRead; |
1679 |
throw Exception("Could not open file \"" + path + "\" for writing"); |
throw Exception("Could not open file \"" + path + "\" for writing"); |
1680 |
} |
} |
1681 |
|
#elif defined(WIN32) |
1682 |
|
hFileWrite = CreateFile( |
1683 |
|
path.c_str(), GENERIC_WRITE, FILE_SHARE_READ, |
1684 |
|
NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL | |
1685 |
|
FILE_FLAG_RANDOM_ACCESS, NULL |
1686 |
|
); |
1687 |
|
if (hFileWrite == INVALID_HANDLE_VALUE) { |
1688 |
|
hFileWrite = hFileRead; |
1689 |
|
throw Exception("Could not open file \"" + path + "\" for writing"); |
1690 |
|
} |
1691 |
#else |
#else |
1692 |
hFileWrite = fopen(path.c_str(), "w+b"); |
hFileWrite = fopen(path.c_str(), "w+b"); |
1693 |
if (!hFileWrite) { |
if (!hFileWrite) { |
1707 |
// forget all resized chunks |
// forget all resized chunks |
1708 |
ResizedChunks.clear(); |
ResizedChunks.clear(); |
1709 |
|
|
1710 |
if (Filename.length() > 0) { |
#if POSIX |
1711 |
#if POSIX |
if (hFileWrite) close(hFileWrite); |
1712 |
close(hFileWrite); |
#elif defined(WIN32) |
1713 |
#else |
if (hFileWrite != INVALID_HANDLE_VALUE) CloseHandle(hFileWrite); |
1714 |
fclose(hFileWrite); |
#else |
1715 |
#endif |
if (hFileWrite) fclose(hFileWrite); |
1716 |
hFileWrite = hFileRead; |
#endif |
1717 |
} |
hFileWrite = hFileRead; |
1718 |
|
|
1719 |
// associate new file with this File object from now on |
// associate new file with this File object from now on |
1720 |
Filename = path; |
Filename = path; |
1726 |
#if POSIX |
#if POSIX |
1727 |
if (ftruncate(hFileWrite, ulNewSize) < 0) |
if (ftruncate(hFileWrite, ulNewSize) < 0) |
1728 |
throw Exception("Could not resize file \"" + Filename + "\""); |
throw Exception("Could not resize file \"" + Filename + "\""); |
1729 |
|
#elif defined(WIN32) |
1730 |
|
if ( |
1731 |
|
SetFilePointer(hFileWrite, ulNewSize, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER || |
1732 |
|
!SetEndOfFile(hFileWrite) |
1733 |
|
) throw Exception("Could not resize file \"" + Filename + "\""); |
1734 |
#else |
#else |
1735 |
# error Sorry, this version of libgig only supports POSIX systems yet. |
# error Sorry, this version of libgig only supports POSIX and Windows systems yet. |
1736 |
# error Reason: portable implementation of RIFF::File::ResizeFile() is missing (yet)! |
# error Reason: portable implementation of RIFF::File::ResizeFile() is missing (yet)! |
1737 |
#endif |
#endif |
1738 |
} |
} |
1743 |
#endif // DEBUG |
#endif // DEBUG |
1744 |
#if POSIX |
#if POSIX |
1745 |
if (hFileRead) close(hFileRead); |
if (hFileRead) close(hFileRead); |
1746 |
|
#elif defined(WIN32) |
1747 |
|
if (hFileRead != INVALID_HANDLE_VALUE) CloseHandle(hFileRead); |
1748 |
#else |
#else |
1749 |
if (hFileRead) fclose(hFileRead); |
if (hFileRead) fclose(hFileRead); |
1750 |
#endif // POSIX |
#endif // POSIX |
1751 |
} |
} |
1752 |
|
|
1753 |
void File::LogAsResized(Chunk* pResizedChunk) { |
void File::LogAsResized(Chunk* pResizedChunk) { |
1754 |
ResizedChunks.push_back(pResizedChunk); |
ResizedChunks.insert(pResizedChunk); |
1755 |
|
} |
1756 |
|
|
1757 |
|
void File::UnlogResized(Chunk* pResizedChunk) { |
1758 |
|
ResizedChunks.erase(pResizedChunk); |
1759 |
} |
} |
1760 |
|
|
1761 |
unsigned long File::GetFileSize() { |
unsigned long File::GetFileSize() { |
1769 |
long size = filestat.st_size; |
long size = filestat.st_size; |
1770 |
return size; |
return size; |
1771 |
} |
} |
1772 |
|
#elif defined(WIN32) |
1773 |
|
unsigned long File::__GetFileSize(HANDLE hFile) { |
1774 |
|
DWORD dwSize = ::GetFileSize(hFile, NULL /*32bit*/); |
1775 |
|
if (dwSize == INVALID_FILE_SIZE) |
1776 |
|
throw Exception("Windows FS error: could not determine file size"); |
1777 |
|
return dwSize; |
1778 |
|
} |
1779 |
#else // standard C functions |
#else // standard C functions |
1780 |
unsigned long File::__GetFileSize(FILE* hFile) { |
unsigned long File::__GetFileSize(FILE* hFile) { |
1781 |
long curpos = ftell(hFile); |
long curpos = ftell(hFile); |