| /* |
| * Copyright (c) 1988-1997 Sam Leffler |
| * Copyright (c) 1991-1997 Silicon Graphics, Inc. |
| * |
| * Permission to use, copy, modify, distribute, and sell this software and |
| * its documentation for any purpose is hereby granted without fee, provided |
| * that (i) the above copyright notices and this permission notice appear in |
| * all copies of the software and related documentation, and (ii) the names of |
| * Sam Leffler and Silicon Graphics may not be used in any advertising or |
| * publicity relating to the software without the specific, prior written |
| * permission of Sam Leffler and Silicon Graphics. |
| * |
| * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
| * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
| * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
| * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
| * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
| * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| * OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * TIFF Library. |
| * |
| * Scanline-oriented Write Support |
| */ |
| #include "tiffiop.h" |
| #include <stdio.h> |
| |
| #define STRIPINCR 20 /* expansion factor on strip array */ |
| |
| #define WRITECHECKSTRIPS(tif, module) \ |
| (((tif)->tif_flags & TIFF_BEENWRITING) || TIFFWriteCheck((tif), 0, module)) |
| #define WRITECHECKTILES(tif, module) \ |
| (((tif)->tif_flags & TIFF_BEENWRITING) || TIFFWriteCheck((tif), 1, module)) |
| #define BUFFERCHECK(tif) \ |
| ((((tif)->tif_flags & TIFF_BUFFERSETUP) && tif->tif_rawdata) || \ |
| TIFFWriteBufferSetup((tif), NULL, (tmsize_t)-1)) |
| |
| static int TIFFGrowStrips(TIFF *tif, uint32_t delta, const char *module); |
| static int TIFFAppendToStrip(TIFF *tif, uint32_t strip, uint8_t *data, |
| tmsize_t cc); |
| |
| int TIFFWriteScanline(TIFF *tif, void *buf, uint32_t row, uint16_t sample) |
| { |
| static const char module[] = "TIFFWriteScanline"; |
| register TIFFDirectory *td; |
| int status, imagegrew = 0; |
| uint32_t strip; |
| |
| if (!WRITECHECKSTRIPS(tif, module)) |
| return (-1); |
| /* |
| * Handle delayed allocation of data buffer. This |
| * permits it to be sized more intelligently (using |
| * directory information). |
| */ |
| if (!BUFFERCHECK(tif)) |
| return (-1); |
| tif->tif_flags |= TIFF_BUF4WRITE; /* not strictly sure this is right*/ |
| |
| td = &tif->tif_dir; |
| /* |
| * Extend image length if needed |
| * (but only for PlanarConfig=1). |
| */ |
| if (row >= td->td_imagelength) |
| { /* extend image */ |
| if (td->td_planarconfig == PLANARCONFIG_SEPARATE) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "Can not change \"ImageLength\" when using separate planes"); |
| return (-1); |
| } |
| td->td_imagelength = row + 1; |
| imagegrew = 1; |
| } |
| /* |
| * Calculate strip and check for crossings. |
| */ |
| if (td->td_planarconfig == PLANARCONFIG_SEPARATE) |
| { |
| if (sample >= td->td_samplesperpixel) |
| { |
| TIFFErrorExtR(tif, module, "%lu: Sample out of range, max %lu", |
| (unsigned long)sample, |
| (unsigned long)td->td_samplesperpixel); |
| return (-1); |
| } |
| strip = sample * td->td_stripsperimage + row / td->td_rowsperstrip; |
| } |
| else |
| strip = row / td->td_rowsperstrip; |
| /* |
| * Check strip array to make sure there's space. We don't support |
| * dynamically growing files that have data organized in separate |
| * bitplanes because it's too painful. In that case we require that |
| * the imagelength be set properly before the first write (so that the |
| * strips array will be fully allocated above). |
| */ |
| if (strip >= td->td_nstrips && !TIFFGrowStrips(tif, 1, module)) |
| return (-1); |
| if (strip != tif->tif_curstrip) |
| { |
| /* |
| * Changing strips -- flush any data present. |
| */ |
| if (!TIFFFlushData(tif)) |
| return (-1); |
| tif->tif_curstrip = strip; |
| /* |
| * Watch out for a growing image. The value of strips/image |
| * will initially be 1 (since it can't be deduced until the |
| * imagelength is known). |
| */ |
| if (strip >= td->td_stripsperimage && imagegrew) |
| td->td_stripsperimage = |
| TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip); |
| if (td->td_stripsperimage == 0) |
| { |
| TIFFErrorExtR(tif, module, "Zero strips per image"); |
| return (-1); |
| } |
| tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip; |
| if ((tif->tif_flags & TIFF_CODERSETUP) == 0) |
| { |
| if (!(*tif->tif_setupencode)(tif)) |
| return (-1); |
| tif->tif_flags |= TIFF_CODERSETUP; |
| } |
| |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| |
| /* this informs TIFFAppendToStrip() we have changed strip */ |
| tif->tif_curoff = 0; |
| |
| if (!(*tif->tif_preencode)(tif, sample)) |
| return (-1); |
| tif->tif_flags |= TIFF_POSTENCODE; |
| } |
| /* |
| * Ensure the write is either sequential or at the |
| * beginning of a strip (or that we can randomly |
| * access the data -- i.e. no encoding). |
| */ |
| if (row != tif->tif_row) |
| { |
| if (row < tif->tif_row) |
| { |
| /* |
| * Moving backwards within the same strip: |
| * backup to the start and then decode |
| * forward (below). |
| */ |
| tif->tif_row = |
| (strip % td->td_stripsperimage) * td->td_rowsperstrip; |
| tif->tif_rawcp = tif->tif_rawdata; |
| } |
| /* |
| * Seek forward to the desired row. |
| */ |
| if (!(*tif->tif_seek)(tif, row - tif->tif_row)) |
| return (-1); |
| tif->tif_row = row; |
| } |
| |
| /* swab if needed - note that source buffer will be altered */ |
| tif->tif_postdecode(tif, (uint8_t *)buf, tif->tif_scanlinesize); |
| |
| status = (*tif->tif_encoderow)(tif, (uint8_t *)buf, tif->tif_scanlinesize, |
| sample); |
| |
| /* we are now poised at the beginning of the next row */ |
| tif->tif_row = row + 1; |
| return (status); |
| } |
| |
| /* Make sure that at the first attempt of rewriting a tile/strip, we will have |
| */ |
| /* more bytes available in the output buffer than the previous byte count, */ |
| /* so that TIFFAppendToStrip() will detect the overflow when it is called the |
| * first */ |
| /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */ |
| static int _TIFFReserveLargeEnoughWriteBuffer(TIFF *tif, uint32_t strip_or_tile) |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| if (td->td_stripbytecount_p[strip_or_tile] > 0) |
| { |
| /* The +1 is to ensure at least one extra bytes */ |
| /* The +4 is because the LZW encoder flushes 4 bytes before the limit */ |
| uint64_t safe_buffer_size = |
| (uint64_t)(td->td_stripbytecount_p[strip_or_tile] + 1 + 4); |
| if (tif->tif_rawdatasize <= (tmsize_t)safe_buffer_size) |
| { |
| if (!(TIFFWriteBufferSetup( |
| tif, NULL, |
| (tmsize_t)TIFFroundup_64(safe_buffer_size, 1024)))) |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| /* |
| * Encode the supplied data and write it to the |
| * specified strip. |
| * |
| * NB: Image length must be setup before writing. |
| */ |
| tmsize_t TIFFWriteEncodedStrip(TIFF *tif, uint32_t strip, void *data, |
| tmsize_t cc) |
| { |
| static const char module[] = "TIFFWriteEncodedStrip"; |
| TIFFDirectory *td = &tif->tif_dir; |
| uint16_t sample; |
| |
| if (!WRITECHECKSTRIPS(tif, module)) |
| return ((tmsize_t)-1); |
| /* |
| * Check strip array to make sure there's space. |
| * We don't support dynamically growing files that |
| * have data organized in separate bitplanes because |
| * it's too painful. In that case we require that |
| * the imagelength be set properly before the first |
| * write (so that the strips array will be fully |
| * allocated above). |
| */ |
| if (strip >= td->td_nstrips) |
| { |
| if (td->td_planarconfig == PLANARCONFIG_SEPARATE) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "Can not grow image by strips when using separate planes"); |
| return ((tmsize_t)-1); |
| } |
| if (!TIFFGrowStrips(tif, 1, module)) |
| return ((tmsize_t)-1); |
| td->td_stripsperimage = |
| TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip); |
| } |
| /* |
| * Handle delayed allocation of data buffer. This |
| * permits it to be sized according to the directory |
| * info. |
| */ |
| if (!BUFFERCHECK(tif)) |
| return ((tmsize_t)-1); |
| |
| tif->tif_flags |= TIFF_BUF4WRITE; |
| |
| tif->tif_curstrip = strip; |
| |
| /* this informs TIFFAppendToStrip() we have changed or reset strip */ |
| tif->tif_curoff = 0; |
| |
| if (!_TIFFReserveLargeEnoughWriteBuffer(tif, strip)) |
| { |
| return ((tmsize_t)(-1)); |
| } |
| |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| |
| if (td->td_stripsperimage == 0) |
| { |
| TIFFErrorExtR(tif, module, "Zero strips per image"); |
| return ((tmsize_t)-1); |
| } |
| |
| tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip; |
| if ((tif->tif_flags & TIFF_CODERSETUP) == 0) |
| { |
| if (!(*tif->tif_setupencode)(tif)) |
| return ((tmsize_t)-1); |
| tif->tif_flags |= TIFF_CODERSETUP; |
| } |
| |
| tif->tif_flags &= ~TIFF_POSTENCODE; |
| |
| /* shortcut to avoid an extra memcpy() */ |
| if (td->td_compression == COMPRESSION_NONE) |
| { |
| /* swab if needed - note that source buffer will be altered */ |
| tif->tif_postdecode(tif, (uint8_t *)data, cc); |
| |
| if (!isFillOrder(tif, td->td_fillorder) && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits((uint8_t *)data, cc); |
| |
| if (cc > 0 && !TIFFAppendToStrip(tif, strip, (uint8_t *)data, cc)) |
| return ((tmsize_t)-1); |
| return (cc); |
| } |
| |
| sample = (uint16_t)(strip / td->td_stripsperimage); |
| if (!(*tif->tif_preencode)(tif, sample)) |
| return ((tmsize_t)-1); |
| |
| /* swab if needed - note that source buffer will be altered */ |
| tif->tif_postdecode(tif, (uint8_t *)data, cc); |
| |
| if (!(*tif->tif_encodestrip)(tif, (uint8_t *)data, cc, sample)) |
| return ((tmsize_t)-1); |
| if (!(*tif->tif_postencode)(tif)) |
| return ((tmsize_t)-1); |
| if (!isFillOrder(tif, td->td_fillorder) && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc); |
| if (tif->tif_rawcc > 0 && |
| !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc)) |
| return ((tmsize_t)-1); |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| return (cc); |
| } |
| |
| /* |
| * Write the supplied data to the specified strip. |
| * |
| * NB: Image length must be setup before writing. |
| */ |
| tmsize_t TIFFWriteRawStrip(TIFF *tif, uint32_t strip, void *data, tmsize_t cc) |
| { |
| static const char module[] = "TIFFWriteRawStrip"; |
| TIFFDirectory *td = &tif->tif_dir; |
| |
| if (!WRITECHECKSTRIPS(tif, module)) |
| return ((tmsize_t)-1); |
| /* |
| * Check strip array to make sure there's space. |
| * We don't support dynamically growing files that |
| * have data organized in separate bitplanes because |
| * it's too painful. In that case we require that |
| * the imagelength be set properly before the first |
| * write (so that the strips array will be fully |
| * allocated above). |
| */ |
| if (strip >= td->td_nstrips) |
| { |
| if (td->td_planarconfig == PLANARCONFIG_SEPARATE) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "Can not grow image by strips when using separate planes"); |
| return ((tmsize_t)-1); |
| } |
| /* |
| * Watch out for a growing image. The value of |
| * strips/image will initially be 1 (since it |
| * can't be deduced until the imagelength is known). |
| */ |
| if (strip >= td->td_stripsperimage) |
| td->td_stripsperimage = |
| TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip); |
| if (!TIFFGrowStrips(tif, 1, module)) |
| return ((tmsize_t)-1); |
| } |
| |
| if (tif->tif_curstrip != strip) |
| { |
| tif->tif_curstrip = strip; |
| |
| /* this informs TIFFAppendToStrip() we have changed or reset strip */ |
| tif->tif_curoff = 0; |
| } |
| |
| if (td->td_stripsperimage == 0) |
| { |
| TIFFErrorExtR(tif, module, "Zero strips per image"); |
| return ((tmsize_t)-1); |
| } |
| tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip; |
| return (TIFFAppendToStrip(tif, strip, (uint8_t *)data, cc) ? cc |
| : (tmsize_t)-1); |
| } |
| |
| /* |
| * Write and compress a tile of data. The |
| * tile is selected by the (x,y,z,s) coordinates. |
| */ |
| tmsize_t TIFFWriteTile(TIFF *tif, void *buf, uint32_t x, uint32_t y, uint32_t z, |
| uint16_t s) |
| { |
| if (!TIFFCheckTile(tif, x, y, z, s)) |
| return ((tmsize_t)(-1)); |
| /* |
| * NB: A tile size of -1 is used instead of tif_tilesize knowing |
| * that TIFFWriteEncodedTile will clamp this to the tile size. |
| * This is done because the tile size may not be defined until |
| * after the output buffer is setup in TIFFWriteBufferSetup. |
| */ |
| return (TIFFWriteEncodedTile(tif, TIFFComputeTile(tif, x, y, z, s), buf, |
| (tmsize_t)(-1))); |
| } |
| |
| /* |
| * Encode the supplied data and write it to the |
| * specified tile. There must be space for the |
| * data. The function clamps individual writes |
| * to a tile to the tile size, but does not (and |
| * can not) check that multiple writes to the same |
| * tile do not write more than tile size data. |
| * |
| * NB: Image length must be setup before writing; this |
| * interface does not support automatically growing |
| * the image on each write (as TIFFWriteScanline does). |
| */ |
| tmsize_t TIFFWriteEncodedTile(TIFF *tif, uint32_t tile, void *data, tmsize_t cc) |
| { |
| static const char module[] = "TIFFWriteEncodedTile"; |
| TIFFDirectory *td; |
| uint16_t sample; |
| uint32_t howmany32; |
| |
| if (!WRITECHECKTILES(tif, module)) |
| return ((tmsize_t)(-1)); |
| td = &tif->tif_dir; |
| if (tile >= td->td_nstrips) |
| { |
| TIFFErrorExtR(tif, module, "Tile %lu out of range, max %lu", |
| (unsigned long)tile, (unsigned long)td->td_nstrips); |
| return ((tmsize_t)(-1)); |
| } |
| /* |
| * Handle delayed allocation of data buffer. This |
| * permits it to be sized more intelligently (using |
| * directory information). |
| */ |
| if (!BUFFERCHECK(tif)) |
| return ((tmsize_t)(-1)); |
| |
| tif->tif_flags |= TIFF_BUF4WRITE; |
| |
| tif->tif_curtile = tile; |
| |
| /* this informs TIFFAppendToStrip() we have changed or reset tile */ |
| tif->tif_curoff = 0; |
| |
| if (!_TIFFReserveLargeEnoughWriteBuffer(tif, tile)) |
| { |
| return ((tmsize_t)(-1)); |
| } |
| |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| |
| /* |
| * Compute tiles per row & per column to compute |
| * current row and column |
| */ |
| howmany32 = TIFFhowmany_32(td->td_imagelength, td->td_tilelength); |
| if (howmany32 == 0) |
| { |
| TIFFErrorExtR(tif, module, "Zero tiles"); |
| return ((tmsize_t)(-1)); |
| } |
| tif->tif_row = (tile % howmany32) * td->td_tilelength; |
| howmany32 = TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth); |
| if (howmany32 == 0) |
| { |
| TIFFErrorExtR(tif, module, "Zero tiles"); |
| return ((tmsize_t)(-1)); |
| } |
| tif->tif_col = (tile % howmany32) * td->td_tilewidth; |
| |
| if ((tif->tif_flags & TIFF_CODERSETUP) == 0) |
| { |
| if (!(*tif->tif_setupencode)(tif)) |
| return ((tmsize_t)(-1)); |
| tif->tif_flags |= TIFF_CODERSETUP; |
| } |
| tif->tif_flags &= ~TIFF_POSTENCODE; |
| |
| /* |
| * Clamp write amount to the tile size. This is mostly |
| * done so that callers can pass in some large number |
| * (e.g. -1) and have the tile size used instead. |
| */ |
| if (cc < 1 || cc > tif->tif_tilesize) |
| cc = tif->tif_tilesize; |
| |
| /* shortcut to avoid an extra memcpy() */ |
| if (td->td_compression == COMPRESSION_NONE) |
| { |
| /* swab if needed - note that source buffer will be altered */ |
| tif->tif_postdecode(tif, (uint8_t *)data, cc); |
| |
| if (!isFillOrder(tif, td->td_fillorder) && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits((uint8_t *)data, cc); |
| |
| if (cc > 0 && !TIFFAppendToStrip(tif, tile, (uint8_t *)data, cc)) |
| return ((tmsize_t)-1); |
| return (cc); |
| } |
| |
| sample = (uint16_t)(tile / td->td_stripsperimage); |
| if (!(*tif->tif_preencode)(tif, sample)) |
| return ((tmsize_t)(-1)); |
| /* swab if needed - note that source buffer will be altered */ |
| tif->tif_postdecode(tif, (uint8_t *)data, cc); |
| |
| if (!(*tif->tif_encodetile)(tif, (uint8_t *)data, cc, sample)) |
| return ((tmsize_t)-1); |
| if (!(*tif->tif_postencode)(tif)) |
| return ((tmsize_t)(-1)); |
| if (!isFillOrder(tif, td->td_fillorder) && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits((uint8_t *)tif->tif_rawdata, tif->tif_rawcc); |
| if (tif->tif_rawcc > 0 && |
| !TIFFAppendToStrip(tif, tile, tif->tif_rawdata, tif->tif_rawcc)) |
| return ((tmsize_t)(-1)); |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| return (cc); |
| } |
| |
| /* |
| * Write the supplied data to the specified strip. |
| * There must be space for the data; we don't check |
| * if strips overlap! |
| * |
| * NB: Image length must be setup before writing; this |
| * interface does not support automatically growing |
| * the image on each write (as TIFFWriteScanline does). |
| */ |
| tmsize_t TIFFWriteRawTile(TIFF *tif, uint32_t tile, void *data, tmsize_t cc) |
| { |
| static const char module[] = "TIFFWriteRawTile"; |
| |
| if (!WRITECHECKTILES(tif, module)) |
| return ((tmsize_t)(-1)); |
| if (tile >= tif->tif_dir.td_nstrips) |
| { |
| TIFFErrorExtR(tif, module, "Tile %lu out of range, max %lu", |
| (unsigned long)tile, |
| (unsigned long)tif->tif_dir.td_nstrips); |
| return ((tmsize_t)(-1)); |
| } |
| return (TIFFAppendToStrip(tif, tile, (uint8_t *)data, cc) ? cc |
| : (tmsize_t)(-1)); |
| } |
| |
| #define isUnspecified(tif, f) \ |
| (TIFFFieldSet(tif, f) && (tif)->tif_dir.td_imagelength == 0) |
| |
| int TIFFSetupStrips(TIFF *tif) |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| |
| if (isTiled(tif)) |
| td->td_stripsperimage = isUnspecified(tif, FIELD_TILEDIMENSIONS) |
| ? td->td_samplesperpixel |
| : TIFFNumberOfTiles(tif); |
| else |
| td->td_stripsperimage = isUnspecified(tif, FIELD_ROWSPERSTRIP) |
| ? td->td_samplesperpixel |
| : TIFFNumberOfStrips(tif); |
| td->td_nstrips = td->td_stripsperimage; |
| /* TIFFWriteDirectoryTagData has a limitation to 0x80000000U bytes */ |
| if (td->td_nstrips >= |
| 0x80000000U / ((tif->tif_flags & TIFF_BIGTIFF) ? 0x8U : 0x4U)) |
| { |
| TIFFErrorExtR(tif, "TIFFSetupStrips", |
| "Too large Strip/Tile Offsets/ByteCounts arrays"); |
| return 0; |
| } |
| if (td->td_planarconfig == PLANARCONFIG_SEPARATE) |
| td->td_stripsperimage /= td->td_samplesperpixel; |
| td->td_stripoffset_p = (uint64_t *)_TIFFCheckMalloc( |
| tif, td->td_nstrips, sizeof(uint64_t), "for \"StripOffsets\" array"); |
| td->td_stripbytecount_p = (uint64_t *)_TIFFCheckMalloc( |
| tif, td->td_nstrips, sizeof(uint64_t), "for \"StripByteCounts\" array"); |
| if (td->td_stripoffset_p == NULL || td->td_stripbytecount_p == NULL) |
| return (0); |
| /* |
| * Place data at the end-of-file |
| * (by setting offsets to zero). |
| */ |
| _TIFFmemset(td->td_stripoffset_p, 0, td->td_nstrips * sizeof(uint64_t)); |
| _TIFFmemset(td->td_stripbytecount_p, 0, td->td_nstrips * sizeof(uint64_t)); |
| TIFFSetFieldBit(tif, FIELD_STRIPOFFSETS); |
| TIFFSetFieldBit(tif, FIELD_STRIPBYTECOUNTS); |
| return (1); |
| } |
| #undef isUnspecified |
| |
| /* |
| * Verify file is writable and that the directory |
| * information is setup properly. In doing the latter |
| * we also "freeze" the state of the directory so |
| * that important information is not changed. |
| */ |
| int TIFFWriteCheck(TIFF *tif, int tiles, const char *module) |
| { |
| if (tif->tif_mode == O_RDONLY) |
| { |
| TIFFErrorExtR(tif, module, "File not open for writing"); |
| return (0); |
| } |
| if (tiles ^ isTiled(tif)) |
| { |
| TIFFErrorExtR(tif, module, |
| tiles ? "Can not write tiles to a striped image" |
| : "Can not write scanlines to a tiled image"); |
| return (0); |
| } |
| |
| _TIFFFillStriles(tif); |
| |
| /* |
| * On the first write verify all the required information |
| * has been setup and initialize any data structures that |
| * had to wait until directory information was set. |
| * Note that a lot of our work is assumed to remain valid |
| * because we disallow any of the important parameters |
| * from changing after we start writing (i.e. once |
| * TIFF_BEENWRITING is set, TIFFSetField will only allow |
| * the image's length to be changed). |
| */ |
| if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) |
| { |
| TIFFErrorExtR(tif, module, |
| "Must set \"ImageWidth\" before writing data"); |
| return (0); |
| } |
| if (tif->tif_dir.td_stripoffset_p == NULL && !TIFFSetupStrips(tif)) |
| { |
| tif->tif_dir.td_nstrips = 0; |
| TIFFErrorExtR(tif, module, "No space for %s arrays", |
| isTiled(tif) ? "tile" : "strip"); |
| return (0); |
| } |
| if (isTiled(tif)) |
| { |
| tif->tif_tilesize = TIFFTileSize(tif); |
| if (tif->tif_tilesize == 0) |
| return (0); |
| } |
| else |
| tif->tif_tilesize = (tmsize_t)(-1); |
| tif->tif_scanlinesize = TIFFScanlineSize(tif); |
| if (tif->tif_scanlinesize == 0) |
| return (0); |
| tif->tif_flags |= TIFF_BEENWRITING; |
| |
| if (tif->tif_dir.td_stripoffset_entry.tdir_tag != 0 && |
| tif->tif_dir.td_stripoffset_entry.tdir_count == 0 && |
| tif->tif_dir.td_stripoffset_entry.tdir_type == 0 && |
| tif->tif_dir.td_stripoffset_entry.tdir_offset.toff_long8 == 0 && |
| tif->tif_dir.td_stripbytecount_entry.tdir_tag != 0 && |
| tif->tif_dir.td_stripbytecount_entry.tdir_count == 0 && |
| tif->tif_dir.td_stripbytecount_entry.tdir_type == 0 && |
| tif->tif_dir.td_stripbytecount_entry.tdir_offset.toff_long8 == 0 && |
| !(tif->tif_flags & TIFF_DIRTYDIRECT)) |
| { |
| TIFFForceStrileArrayWriting(tif); |
| } |
| |
| return (1); |
| } |
| |
| /* |
| * Setup the raw data buffer used for encoding. |
| */ |
| int TIFFWriteBufferSetup(TIFF *tif, void *bp, tmsize_t size) |
| { |
| static const char module[] = "TIFFWriteBufferSetup"; |
| |
| if (tif->tif_rawdata) |
| { |
| if (tif->tif_flags & TIFF_MYBUFFER) |
| { |
| _TIFFfreeExt(tif, tif->tif_rawdata); |
| tif->tif_flags &= ~TIFF_MYBUFFER; |
| } |
| tif->tif_rawdata = NULL; |
| } |
| if (size == (tmsize_t)(-1)) |
| { |
| size = (isTiled(tif) ? tif->tif_tilesize : TIFFStripSize(tif)); |
| |
| /* Adds 10% margin for cases where compression would expand a bit */ |
| if (size < TIFF_TMSIZE_T_MAX - size / 10) |
| size += size / 10; |
| /* |
| * Make raw data buffer at least 8K |
| */ |
| if (size < 8 * 1024) |
| size = 8 * 1024; |
| bp = NULL; /* NB: force malloc */ |
| } |
| if (bp == NULL) |
| { |
| bp = _TIFFmallocExt(tif, size); |
| if (bp == NULL) |
| { |
| TIFFErrorExtR(tif, module, "No space for output buffer"); |
| return (0); |
| } |
| tif->tif_flags |= TIFF_MYBUFFER; |
| } |
| else |
| tif->tif_flags &= ~TIFF_MYBUFFER; |
| tif->tif_rawdata = (uint8_t *)bp; |
| tif->tif_rawdatasize = size; |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| tif->tif_flags |= TIFF_BUFFERSETUP; |
| return (1); |
| } |
| |
| /* |
| * Grow the strip data structures by delta strips. |
| */ |
| static int TIFFGrowStrips(TIFF *tif, uint32_t delta, const char *module) |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| uint64_t *new_stripoffset; |
| uint64_t *new_stripbytecount; |
| |
| assert(td->td_planarconfig == PLANARCONFIG_CONTIG); |
| new_stripoffset = (uint64_t *)_TIFFreallocExt( |
| tif, td->td_stripoffset_p, (td->td_nstrips + delta) * sizeof(uint64_t)); |
| new_stripbytecount = (uint64_t *)_TIFFreallocExt( |
| tif, td->td_stripbytecount_p, |
| (td->td_nstrips + delta) * sizeof(uint64_t)); |
| if (new_stripoffset == NULL || new_stripbytecount == NULL) |
| { |
| if (new_stripoffset) |
| _TIFFfreeExt(tif, new_stripoffset); |
| if (new_stripbytecount) |
| _TIFFfreeExt(tif, new_stripbytecount); |
| td->td_nstrips = 0; |
| TIFFErrorExtR(tif, module, "No space to expand strip arrays"); |
| return (0); |
| } |
| td->td_stripoffset_p = new_stripoffset; |
| td->td_stripbytecount_p = new_stripbytecount; |
| _TIFFmemset(td->td_stripoffset_p + td->td_nstrips, 0, |
| delta * sizeof(uint64_t)); |
| _TIFFmemset(td->td_stripbytecount_p + td->td_nstrips, 0, |
| delta * sizeof(uint64_t)); |
| td->td_nstrips += delta; |
| tif->tif_flags |= TIFF_DIRTYDIRECT; |
| |
| return (1); |
| } |
| |
| /* |
| * Append the data to the specified strip. |
| */ |
| static int TIFFAppendToStrip(TIFF *tif, uint32_t strip, uint8_t *data, |
| tmsize_t cc) |
| { |
| static const char module[] = "TIFFAppendToStrip"; |
| TIFFDirectory *td = &tif->tif_dir; |
| uint64_t m; |
| int64_t old_byte_count = -1; |
| |
| if (tif->tif_curoff == 0) |
| tif->tif_lastvalidoff = 0; |
| |
| if (td->td_stripoffset_p[strip] == 0 || tif->tif_curoff == 0) |
| { |
| assert(td->td_nstrips > 0); |
| |
| if (td->td_stripbytecount_p[strip] != 0 && |
| td->td_stripoffset_p[strip] != 0 && |
| td->td_stripbytecount_p[strip] >= (uint64_t)cc) |
| { |
| /* |
| * There is already tile data on disk, and the new tile |
| * data we have will fit in the same space. The only |
| * aspect of this that is risky is that there could be |
| * more data to append to this strip before we are done |
| * depending on how we are getting called. |
| */ |
| if (!SeekOK(tif, td->td_stripoffset_p[strip])) |
| { |
| TIFFErrorExtR(tif, module, "Seek error at scanline %lu", |
| (unsigned long)tif->tif_row); |
| return (0); |
| } |
| |
| tif->tif_lastvalidoff = |
| td->td_stripoffset_p[strip] + td->td_stripbytecount_p[strip]; |
| } |
| else |
| { |
| /* |
| * Seek to end of file, and set that as our location to |
| * write this strip. |
| */ |
| td->td_stripoffset_p[strip] = TIFFSeekFile(tif, 0, SEEK_END); |
| tif->tif_flags |= TIFF_DIRTYSTRIP; |
| } |
| |
| tif->tif_curoff = td->td_stripoffset_p[strip]; |
| |
| /* |
| * We are starting a fresh strip/tile, so set the size to zero. |
| */ |
| old_byte_count = td->td_stripbytecount_p[strip]; |
| td->td_stripbytecount_p[strip] = 0; |
| } |
| |
| m = tif->tif_curoff + cc; |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| m = (uint32_t)m; |
| if ((m < tif->tif_curoff) || (m < (uint64_t)cc)) |
| { |
| TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded"); |
| return (0); |
| } |
| |
| if (tif->tif_lastvalidoff != 0 && m > tif->tif_lastvalidoff && |
| td->td_stripbytecount_p[strip] > 0) |
| { |
| /* Ouch: we have detected that we are rewriting in place a strip/tile */ |
| /* with several calls to TIFFAppendToStrip(). The first call was with */ |
| /* a size smaller than the previous size of the strip/tile, so we */ |
| /* opted to rewrite in place, but a following call causes us to go */ |
| /* outsize of the strip/tile area, so we have to finally go for a */ |
| /* append-at-end-of-file strategy, and start by moving what we already |
| */ |
| /* wrote. */ |
| tmsize_t tempSize; |
| void *temp; |
| uint64_t offsetRead; |
| uint64_t offsetWrite; |
| uint64_t toCopy = td->td_stripbytecount_p[strip]; |
| |
| if (toCopy < 1024 * 1024) |
| tempSize = (tmsize_t)toCopy; |
| else |
| tempSize = 1024 * 1024; |
| |
| offsetRead = td->td_stripoffset_p[strip]; |
| offsetWrite = TIFFSeekFile(tif, 0, SEEK_END); |
| |
| m = offsetWrite + toCopy + cc; |
| if (!(tif->tif_flags & TIFF_BIGTIFF) && m != (uint32_t)m) |
| { |
| TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded"); |
| return (0); |
| } |
| |
| temp = _TIFFmallocExt(tif, tempSize); |
| if (temp == NULL) |
| { |
| TIFFErrorExtR(tif, module, "No space for output buffer"); |
| return (0); |
| } |
| |
| tif->tif_flags |= TIFF_DIRTYSTRIP; |
| |
| td->td_stripoffset_p[strip] = offsetWrite; |
| td->td_stripbytecount_p[strip] = 0; |
| |
| /* Move data written by previous calls to us at end of file */ |
| while (toCopy > 0) |
| { |
| if (!SeekOK(tif, offsetRead)) |
| { |
| TIFFErrorExtR(tif, module, "Seek error"); |
| _TIFFfreeExt(tif, temp); |
| return (0); |
| } |
| if (!ReadOK(tif, temp, tempSize)) |
| { |
| TIFFErrorExtR(tif, module, "Cannot read"); |
| _TIFFfreeExt(tif, temp); |
| return (0); |
| } |
| if (!SeekOK(tif, offsetWrite)) |
| { |
| TIFFErrorExtR(tif, module, "Seek error"); |
| _TIFFfreeExt(tif, temp); |
| return (0); |
| } |
| if (!WriteOK(tif, temp, tempSize)) |
| { |
| TIFFErrorExtR(tif, module, "Cannot write"); |
| _TIFFfreeExt(tif, temp); |
| return (0); |
| } |
| offsetRead += tempSize; |
| offsetWrite += tempSize; |
| td->td_stripbytecount_p[strip] += tempSize; |
| toCopy -= tempSize; |
| } |
| _TIFFfreeExt(tif, temp); |
| |
| /* Append the data of this call */ |
| offsetWrite += cc; |
| m = offsetWrite; |
| } |
| |
| if (!WriteOK(tif, data, cc)) |
| { |
| TIFFErrorExtR(tif, module, "Write error at scanline %lu", |
| (unsigned long)tif->tif_row); |
| return (0); |
| } |
| tif->tif_curoff = m; |
| td->td_stripbytecount_p[strip] += cc; |
| |
| if ((int64_t)td->td_stripbytecount_p[strip] != old_byte_count) |
| tif->tif_flags |= TIFF_DIRTYSTRIP; |
| |
| return (1); |
| } |
| |
| /* |
| * Internal version of TIFFFlushData that can be |
| * called by ``encodestrip routines'' w/o concern |
| * for infinite recursion. |
| */ |
| int TIFFFlushData1(TIFF *tif) |
| { |
| if (tif->tif_rawcc > 0 && tif->tif_flags & TIFF_BUF4WRITE) |
| { |
| if (!isFillOrder(tif, tif->tif_dir.td_fillorder) && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits((uint8_t *)tif->tif_rawdata, tif->tif_rawcc); |
| if (!TIFFAppendToStrip( |
| tif, isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip, |
| tif->tif_rawdata, tif->tif_rawcc)) |
| { |
| /* We update those variables even in case of error since there's */ |
| /* code that doesn't really check the return code of this */ |
| /* function */ |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| return (0); |
| } |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| } |
| return (1); |
| } |
| |
| /* |
| * Set the current write offset. This should only be |
| * used to set the offset to a known previous location |
| * (very carefully), or to 0 so that the next write gets |
| * appended to the end of the file. |
| */ |
| void TIFFSetWriteOffset(TIFF *tif, toff_t off) |
| { |
| tif->tif_curoff = off; |
| tif->tif_lastvalidoff = 0; |
| } |
