/[svn]/libgig/trunk/src/RIFF.cpp
ViewVC logotype

Diff of /libgig/trunk/src/RIFF.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 808 by schoenebeck, Tue Nov 22 09:11:17 2005 UTC revision 1859 by persson, Sun Mar 8 12:24:56 2009 UTC
# Line 1  Line 1 
1  /***************************************************************************  /***************************************************************************
2   *                                                                         *   *                                                                         *
3   *   libgig - C++ cross-platform Gigasampler format file loader library    *   *   libgig - C++ cross-platform Gigasampler format file access library    *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003-2005 by Christian Schoenebeck                      *   *   Copyright (C) 2003-2009 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  *
# Line 21  Line 21 
21   *   MA  02111-1307  USA                                                   *   *   MA  02111-1307  USA                                                   *
22   ***************************************************************************/   ***************************************************************************/
23    
24    #include <algorithm>
25  #include <string.h>  #include <string.h>
26    
27  #include "RIFF.h"  #include "RIFF.h"
# Line 29  Line 30 
30    
31  namespace RIFF {  namespace RIFF {
32    
33    // *************** Internal functions **************
34    // *
35    
36        /// Returns a human readable path of the given chunk.
37        static String __resolveChunkPath(Chunk* pCk) {
38            String sPath;
39            for (Chunk* pChunk = pCk; pChunk; pChunk = pChunk->GetParent()) {
40                if (pChunk->GetChunkID() == CHUNK_ID_LIST) {
41                    List* pList = (List*) pChunk;
42                    sPath = "->'" + pList->GetListTypeString() + "'" + sPath;
43                } else {
44                    sPath = "->'" + pChunk->GetChunkIDString() + "'" + sPath;
45                }
46            }
47            return sPath;
48        }
49    
50    
51    
52  // *************** Chunk **************  // *************** Chunk **************
53  // *  // *
54    
# Line 70  namespace RIFF { Line 90  namespace RIFF {
90      }      }
91    
92      Chunk::~Chunk() {      Chunk::~Chunk() {
93            pFile->UnlogResized(this);
94          if (pChunkData) delete[] pChunkData;          if (pChunkData) delete[] pChunkData;
95      }      }
96    
# Line 81  namespace RIFF { Line 102  namespace RIFF {
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            if (SetFilePointer(pFile->hFileRead, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) {
107                DWORD dwBytesRead;
108                ReadFile(pFile->hFileRead, &ChunkID, 4, &dwBytesRead, NULL);
109                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);
# Line 129  namespace RIFF { Line 155  namespace RIFF {
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            if (SetFilePointer(pFile->hFileWrite, fPos, NULL/*32 bit*/, FILE_BEGIN) != INVALID_SET_FILE_POINTER) {
160                DWORD dwBytesWritten;
161                WriteFile(pFile->hFileWrite, &uiNewChunkID, 4, &dwBytesWritten, NULL);
162                WriteFile(pFile->hFileWrite, &uiNewChunkSize, 4, &dwBytesWritten, NULL);
163            }
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);
# Line 204  namespace RIFF { Line 236  namespace RIFF {
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() {
# Line 212  namespace RIFF { Line 244  namespace RIFF {
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            if (pFile->hFileRead == INVALID_HANDLE_VALUE)
250                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
# Line 239  namespace RIFF { Line 274  namespace RIFF {
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            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
# Line 246  namespace RIFF { Line 282  namespace RIFF {
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            if (SetFilePointer(pFile->hFileRead, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) return 0;
287            DWORD readWords;
288            ReadFile(pFile->hFileRead, pData, WordCount * WordSize, &readWords, NULL);
289            if (readWords < 1) return 0;
290            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);
# Line 315  namespace RIFF { Line 357  namespace RIFF {
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            if (SetFilePointer(pFile->hFileWrite, ulStartPos + ulPos, NULL/*32 bit*/, FILE_BEGIN) == INVALID_SET_FILE_POINTER) {
362                throw Exception("Could not seek to position " + ToString(ulPos) +
363                                " in chunk (" + ToString(ulStartPos + ulPos) + " in file)");
364            }
365            DWORD writtenWords;
366            WriteFile(pFile->hFileWrite, pData, WordCount * WordSize, &writtenWords, NULL);
367            if (writtenWords < 1) throw Exception("Windows IO Error while trying to write chunk data");
368            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) +
# Line 676  namespace RIFF { Line 727  namespace RIFF {
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                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
# Line 688  namespace RIFF { Line 741  namespace RIFF {
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
# Line 740  namespace RIFF { Line 796  namespace RIFF {
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);
# Line 775  namespace RIFF { Line 832  namespace RIFF {
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                SetFilePointer(pFile->hFileWrite, ulWritePos, NULL/*32 bit*/, FILE_BEGIN);
837                DWORD dwBytesWritten;
838                WriteFile(pFile->hFileWrite, pChunkData, NewChunkSize, &dwBytesWritten, NULL);
839                if (dwBytesWritten != NewChunkSize) {
840                    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) {
# Line 785  namespace RIFF { Line 849  namespace RIFF {
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                DWORD iBytesMoved = 1; // we have to pass it via pointer to the Windows API, thus the correct size must be ensured
854                #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
# Line 793  namespace RIFF { Line 861  namespace RIFF {
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                    SetFilePointer(pFile->hFileRead, ulStartPos + ulCurrentDataOffset + ulOffset, NULL/*32 bit*/, FILE_BEGIN);
866                    ReadFile(pFile->hFileRead, pCopyBuffer, iBytesMoved, &iBytesMoved, NULL);
867                    SetFilePointer(pFile->hFileWrite, ulWritePos + ulOffset, NULL/*32 bit*/, FILE_BEGIN);
868                    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);
# Line 818  namespace RIFF { Line 891  namespace RIFF {
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                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);
# Line 1077  namespace RIFF { Line 1154  namespace RIFF {
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    
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         * @param pSrc - sub chunk to be moved
1169         * @param pDst - the position to move to. pSrc will be placed
1170         *               before pDst. If pDst is 0, pSrc will be placed
1171         *               last in list.
1172         */
1173        void List::MoveSubChunk(Chunk* pSrc, Chunk* pDst) {
1174            if (!pSubChunks) LoadSubChunks();
1175            pSubChunks->remove(pSrc);
1176            ChunkList::iterator iter = find(pSubChunks->begin(), pSubChunks->end(), pDst);
1177            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
# Line 1094  namespace RIFF { Line 1191  namespace RIFF {
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    
# Line 1101  namespace RIFF { Line 1200  namespace RIFF {
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       */       */
# Line 1133  namespace RIFF { Line 1233  namespace RIFF {
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);
# Line 1153  namespace RIFF { Line 1257  namespace RIFF {
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);
# Line 1166  namespace RIFF { Line 1274  namespace RIFF {
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) {
# Line 1192  namespace RIFF { Line 1304  namespace RIFF {
1304          }          }
1305      }      }
1306    
1307        void List::LoadSubChunksRecursively() {
1308            for (List* pList = GetFirstSubList(); pList; pList = GetNextSubList())
1309                pList->LoadSubChunksRecursively();
1310        }
1311    
1312      /** @brief Write list chunk persistently e.g. to disk.      /** @brief Write list chunk persistently e.g. to disk.
1313       *       *
1314       * Stores the list chunk persistently to its actual "physical" file. All       * Stores the list chunk persistently to its actual "physical" file. All
# Line 1257  namespace RIFF { Line 1374  namespace RIFF {
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;
# Line 1287  namespace RIFF { Line 1413  namespace RIFF {
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;
# Line 1328  namespace RIFF { Line 1466  namespace RIFF {
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
# Line 1343  namespace RIFF { Line 1495  namespace RIFF {
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
# Line 1357  namespace RIFF { Line 1531  namespace RIFF {
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);
# Line 1372  namespace RIFF { Line 1549  namespace RIFF {
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
# Line 1383  namespace RIFF { Line 1577  namespace RIFF {
1577       *                         chunk or any kind of IO error occured       *                         chunk or any kind of IO error occured
1578       */       */
1579      void File::Save() {      void File::Save() {
1580            // make sure the RIFF tree is built (from the original file)
1581            LoadSubChunksRecursively();
1582    
1583          // reopen file in write mode          // reopen file in write mode
1584          SetMode(stream_mode_read_write);          SetMode(stream_mode_read_write);
1585    
# Line 1395  namespace RIFF { Line 1592  namespace RIFF {
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();
# Line 1413  namespace RIFF { Line 1611  namespace RIFF {
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);
# Line 1460  namespace RIFF { Line 1667  namespace RIFF {
1667      void File::Save(const String& path) {      void File::Save(const String& path) {
1668          //TODO: we should make a check here if somebody tries to write to the same file and automatically call the other Save() method in that case          //TODO: we should make a check here if somebody tries to write to the same file and automatically call the other Save() method in that case
1669    
1670            // make sure the RIFF tree is built (from the original file)
1671            LoadSubChunksRecursively();
1672    
1673          if (Filename.length() > 0) SetMode(stream_mode_read);          if (Filename.length() > 0) SetMode(stream_mode_read);
1674          // open the other (new) file for writing and truncate it to zero size          // open the other (new) file for writing and truncate it to zero size
1675          #if POSIX          #if POSIX
# Line 1468  namespace RIFF { Line 1678  namespace RIFF {
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) {
# Line 1487  namespace RIFF { Line 1707  namespace RIFF {
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;
# Line 1506  namespace RIFF { Line 1726  namespace RIFF {
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      }      }
# Line 1518  namespace RIFF { Line 1743  namespace RIFF {
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() {
# Line 1538  namespace RIFF { Line 1769  namespace RIFF {
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);
Legend:
Removed from v.808  
changed lines
  Added in v.1859
  ViewVC Help
Powered by ViewVC