| #ifndef lint |
| static char rcsid[] = "$Header: /cvs/bao-parsec/ext/splash2/apps/volrend/src/libtiff/tif_write.c,v 1.1.1.1 2012/03/29 17:22:40 uid42307 Exp $"; |
| #endif |
| |
| /* |
| * Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler |
| * Copyright (c) 1991, 1992 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> |
| #include <assert.h> |
| |
| #define STRIPINCR 20 /* expansion factor on strip array */ |
| |
| #if USE_PROTOTYPES |
| static TIFFWriteCheck(TIFF *, int, char []); |
| static TIFFBufferSetup(TIFF *, char []); |
| static TIFFGrowStrips(TIFF *, int, char []); |
| static TIFFAppendToStrip(TIFF *, u_int, u_char *, u_int); |
| #else |
| static TIFFWriteCheck(); |
| static TIFFBufferSetup(); |
| static TIFFGrowStrips(); |
| static TIFFAppendToStrip(); |
| #endif |
| |
| /*VARARGS3*/ |
| TIFFWriteScanline(tif, buf, row, sample) |
| register TIFF *tif; |
| u_char *buf; |
| u_int row, sample; |
| { |
| static char module[] = "TIFFWriteScanline"; |
| register TIFFDirectory *td; |
| int strip, status, imagegrew = 0; |
| |
| if (!TIFFWriteCheck(tif, 0, module)) |
| return (-1); |
| /* |
| * Handle delayed allocation of data buffer. This |
| * permits it to be sized more intelligently (using |
| * directory information). |
| */ |
| if ((tif->tif_flags & TIFF_BUFFERSETUP) == 0) { |
| if (!TIFFBufferSetup(tif, module)) |
| return (-1); |
| tif->tif_flags |= TIFF_BUFFERSETUP; |
| } |
| 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) { |
| TIFFError(tif->tif_name, |
| "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) { |
| TIFFError(tif->tif_name, |
| "%d: Sample out of range, max %d", |
| sample, td->td_samplesperpixel); |
| return (-1); |
| } |
| strip = sample*td->td_stripsperimage + row/td->td_rowsperstrip; |
| } else |
| strip = row / td->td_rowsperstrip; |
| if (strip != tif->tif_curstrip) { |
| /* |
| * Changing strips -- flush any data present. |
| */ |
| if (tif->tif_rawcc > 0 && !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 = |
| howmany(td->td_imagelength, td->td_rowsperstrip); |
| tif->tif_row = |
| (strip % td->td_stripsperimage) * td->td_rowsperstrip; |
| if (tif->tif_preencode && !(*tif->tif_preencode)(tif)) |
| return (-1); |
| tif->tif_flags |= TIFF_POSTENCODE; |
| } |
| /* |
| * 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); |
| /* |
| * 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 (tif->tif_seek) { |
| 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; |
| } else { |
| TIFFError(tif->tif_name, |
| "Compression algorithm does not support random access"); |
| return (-1); |
| } |
| } |
| status = (*tif->tif_encoderow)(tif, buf, tif->tif_scanlinesize, sample); |
| tif->tif_row++; |
| return (status); |
| } |
| |
| /* |
| * Encode the supplied data and write it 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). |
| */ |
| TIFFWriteEncodedStrip(tif, strip, data, cc) |
| TIFF *tif; |
| u_int strip; |
| u_char *data; |
| u_int cc; |
| { |
| static char module[] = "TIFFWriteEncodedStrip"; |
| TIFFDirectory *td = &tif->tif_dir; |
| |
| if (!TIFFWriteCheck(tif, 0, module)) |
| return (-1); |
| if (strip >= td->td_nstrips) { |
| TIFFError(module, "%s: Strip %d out of range, max %d", |
| tif->tif_name, strip, td->td_nstrips); |
| return (-1); |
| } |
| /* |
| * Handle delayed allocation of data buffer. This |
| * permits it to be sized according to the directory |
| * info. |
| */ |
| if ((tif->tif_flags & TIFF_BUFFERSETUP) == 0) { |
| if (!TIFFBufferSetup(tif, module)) |
| return (-1); |
| tif->tif_flags |= TIFF_BUFFERSETUP; |
| } |
| tif->tif_curstrip = strip; |
| tif->tif_flags &= ~TIFF_POSTENCODE; |
| if (tif->tif_preencode && !(*tif->tif_preencode)(tif)) |
| return (-1); |
| if (!(*tif->tif_encodestrip)(tif, |
| data, cc, strip / td->td_stripsperimage)) |
| return (0); |
| if (tif->tif_postencode && !(*tif->tif_postencode)(tif)) |
| return (-1); |
| if (td->td_fillorder != tif->tif_fillorder && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits((u_char *)tif->tif_rawdata, tif->tif_rawcc); |
| if (tif->tif_rawcc > 0 && |
| !TIFFAppendToStrip(tif, strip, (u_char *)tif->tif_rawdata, tif->tif_rawcc)) |
| return (-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). |
| */ |
| TIFFWriteRawStrip(tif, strip, data, cc) |
| TIFF *tif; |
| u_int strip; |
| u_char *data; |
| u_int cc; |
| { |
| static char module[] = "TIFFWriteRawStrip"; |
| |
| if (!TIFFWriteCheck(tif, 0, module)) |
| return (-1); |
| if (strip >= tif->tif_dir.td_nstrips) { |
| TIFFError(module, "%s: Strip %d out of range, max %d", |
| tif->tif_name, strip, tif->tif_dir.td_nstrips); |
| return (-1); |
| } |
| return (TIFFAppendToStrip(tif, strip, data, cc) ? cc : -1); |
| } |
| |
| /* |
| * Write and compress a tile of data. The |
| * tile is selected by the (x,y,z,s) coordinates. |
| */ |
| TIFFWriteTile(tif, buf, x, y, z, s) |
| TIFF *tif; |
| u_char *buf; |
| u_long x, y, z; |
| u_int s; |
| { |
| if (!TIFFCheckTile(tif, x, y, z, s)) |
| return (-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 TIFFBufferSetup. |
| */ |
| return (TIFFWriteEncodedTile(tif, |
| TIFFComputeTile(tif, x, y, z, s), buf, (u_int)-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). |
| */ |
| TIFFWriteEncodedTile(tif, tile, data, cc) |
| TIFF *tif; |
| u_int tile; |
| u_char *data; |
| u_int cc; |
| { |
| static char module[] = "TIFFWriteEncodedTile"; |
| TIFFDirectory *td; |
| |
| if (!TIFFWriteCheck(tif, 1, module)) |
| return (-1); |
| td = &tif->tif_dir; |
| if (tile >= td->td_nstrips) { |
| TIFFError(module, "%s: Tile %d out of range, max %d", |
| tif->tif_name, tile, td->td_nstrips); |
| return (-1); |
| } |
| /* |
| * Handle delayed allocation of data buffer. This |
| * permits it to be sized more intelligently (using |
| * directory information). |
| */ |
| if ((tif->tif_flags & TIFF_BUFFERSETUP) == 0) { |
| if (!TIFFBufferSetup(tif, module)) |
| return (-1); |
| tif->tif_flags |= TIFF_BUFFERSETUP; |
| } |
| tif->tif_curtile = tile; |
| /* |
| * Compute tiles per row & per column to compute |
| * current row and column |
| */ |
| tif->tif_row = (tile % howmany(td->td_imagelength, td->td_tilelength)) |
| * td->td_tilelength; |
| tif->tif_col = (tile % howmany(td->td_imagewidth, td->td_tilewidth)) |
| * td->td_tilewidth; |
| |
| tif->tif_flags &= ~TIFF_POSTENCODE; |
| if (tif->tif_preencode && !(*tif->tif_preencode)(tif)) |
| return (-1); |
| /* |
| * 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 > tif->tif_tilesize) |
| cc = tif->tif_tilesize; |
| if (!(*tif->tif_encodetile)(tif, data, cc, tile/td->td_stripsperimage)) |
| return (0); |
| if (tif->tif_postencode && !(*tif->tif_postencode)(tif)) |
| return (-1); |
| if (td->td_fillorder != tif->tif_fillorder && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits((u_char *)tif->tif_rawdata, tif->tif_rawcc); |
| if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile, |
| (u_char *)tif->tif_rawdata, tif->tif_rawcc)) |
| return (-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). |
| */ |
| TIFFWriteRawTile(tif, tile, data, cc) |
| TIFF *tif; |
| u_int tile; |
| u_char *data; |
| u_int cc; |
| { |
| static char module[] = "TIFFWriteRawTile"; |
| |
| if (!TIFFWriteCheck(tif, 1, module)) |
| return (-1); |
| if (tile >= tif->tif_dir.td_nstrips) { |
| TIFFError(module, "%s: Tile %d out of range, max %d", |
| tif->tif_name, tile, tif->tif_dir.td_nstrips); |
| return (-1); |
| } |
| return (TIFFAppendToStrip(tif, tile, data, cc) ? cc : -1); |
| } |
| |
| static |
| TIFFSetupStrips(tif) |
| TIFF *tif; |
| { |
| #define isUnspecified(td, v) \ |
| (td->v == 0xffffffff || (td)->td_imagelength == 0) |
| register TIFFDirectory *td = &tif->tif_dir; |
| |
| if (!isTiled(tif)) |
| td->td_stripsperimage = isUnspecified(td, td_rowsperstrip) ? |
| 1 : howmany(td->td_imagelength, td->td_rowsperstrip); |
| else |
| td->td_stripsperimage = isUnspecified(td, td_tilelength) ? |
| 1 : TIFFNumberOfTiles(tif); |
| td->td_nstrips = td->td_stripsperimage; |
| if (td->td_planarconfig == PLANARCONFIG_SEPARATE) |
| td->td_nstrips *= td->td_samplesperpixel; |
| td->td_stripoffset = (u_long *) |
| malloc(td->td_nstrips * sizeof (u_long)); |
| td->td_stripbytecount = (u_long *) |
| malloc(td->td_nstrips * sizeof (u_long)); |
| if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL) |
| return (0); |
| /* |
| * Place data at the end-of-file |
| * (by setting offsets to zero). |
| */ |
| bzero((char *)td->td_stripoffset, td->td_nstrips * sizeof (u_long)); |
| bzero((char *)td->td_stripbytecount, td->td_nstrips * sizeof (u_long)); |
| 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. |
| */ |
| static |
| TIFFWriteCheck(tif, tiles, module) |
| register TIFF *tif; |
| int tiles; |
| char module[]; |
| { |
| if (tif->tif_mode == O_RDONLY) { |
| TIFFError(module, "%s: File not open for writing", |
| tif->tif_name); |
| return (0); |
| } |
| if (tiles ^ isTiled(tif)) { |
| TIFFError(tif->tif_name, tiles ? |
| "Can not write tiles to a stripped image" : |
| "Can not write scanlines to a tiled image"); |
| return (0); |
| } |
| /* |
| * 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 ((tif->tif_flags & TIFF_BEENWRITING) == 0) { |
| if (!TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) { |
| TIFFError(module, |
| "%s: Must set \"ImageWidth\" before writing data", |
| tif->tif_name); |
| return (0); |
| } |
| if (!TIFFFieldSet(tif, FIELD_PLANARCONFIG)) { |
| TIFFError(module, |
| "%s: Must set \"PlanarConfiguration\" before writing data", |
| tif->tif_name); |
| return (0); |
| } |
| if (tif->tif_dir.td_stripoffset == NULL && |
| !TIFFSetupStrips(tif)) { |
| tif->tif_dir.td_nstrips = 0; |
| TIFFError(module, "%s: No space for %s arrays", |
| tif->tif_name, isTiled(tif) ? "tile" : "strip"); |
| return (0); |
| } |
| tif->tif_flags |= TIFF_BEENWRITING; |
| } |
| return (1); |
| } |
| |
| /* |
| * Setup the raw data buffer used for encoding. |
| */ |
| static |
| TIFFBufferSetup(tif, module) |
| register TIFF *tif; |
| char module[]; |
| { |
| int size; |
| |
| if (isTiled(tif)) |
| tif->tif_tilesize = size = TIFFTileSize(tif); |
| else |
| tif->tif_scanlinesize = size = TIFFScanlineSize(tif); |
| /* |
| * Make raw data buffer at least 8K |
| */ |
| if (size < 8*1024) |
| size = 8*1024; |
| tif->tif_rawdata = malloc(size); |
| if (tif->tif_rawdata == NULL) { |
| TIFFError(module, "%s: No space for output buffer", |
| tif->tif_name); |
| return (0); |
| } |
| tif->tif_rawdatasize = size; |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| return (1); |
| } |
| |
| /* |
| * Grow the strip data structures by delta strips. |
| */ |
| static |
| TIFFGrowStrips(tif, delta, module) |
| TIFF *tif; |
| int delta; |
| char module[]; |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| |
| assert(td->td_planarconfig == PLANARCONFIG_CONTIG); |
| td->td_stripoffset = (u_long *)realloc(td->td_stripoffset, |
| (td->td_nstrips + delta) * sizeof (u_long)); |
| td->td_stripbytecount = (u_long *)realloc(td->td_stripbytecount, |
| (td->td_nstrips + delta) * sizeof (u_long)); |
| if (td->td_stripoffset == NULL || td->td_stripbytecount == NULL) { |
| td->td_nstrips = 0; |
| TIFFError(module, "%s: No space to expand strip arrays", |
| tif->tif_name); |
| return (0); |
| } |
| bzero(td->td_stripoffset+td->td_nstrips, delta*sizeof (u_long)); |
| bzero(td->td_stripbytecount+td->td_nstrips, delta*sizeof (u_long)); |
| td->td_nstrips += delta; |
| return (1); |
| } |
| |
| /* |
| * Append the data to the specified strip. |
| * |
| * NB: We don't check that there's space in the |
| * file (i.e. that strips do not overlap). |
| */ |
| static |
| TIFFAppendToStrip(tif, strip, data, cc) |
| TIFF *tif; |
| u_int strip; |
| u_char *data; |
| u_int cc; |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| static char module[] = "TIFFAppendToStrip"; |
| |
| if (td->td_stripoffset[strip] == 0 || tif->tif_curoff == 0) { |
| /* |
| * No current offset, set the current strip. |
| */ |
| if (td->td_stripoffset[strip] != 0) { |
| if (!SeekOK(tif->tif_fd, td->td_stripoffset[strip])) { |
| TIFFError(module, |
| "%s: Seek error at scanline %d", |
| tif->tif_name, tif->tif_row); |
| return (0); |
| } |
| } else |
| td->td_stripoffset[strip] = |
| lseek(tif->tif_fd, 0L, L_XTND); |
| tif->tif_curoff = td->td_stripoffset[strip]; |
| } |
| if (!WriteOK(tif->tif_fd, data, cc)) { |
| TIFFError(module, "%s: Write error at scanline %d", |
| tif->tif_name, tif->tif_row); |
| return (0); |
| } |
| tif->tif_curoff += cc; |
| td->td_stripbytecount[strip] += cc; |
| return (1); |
| } |
| |
| /* |
| * Internal version of TIFFFlushData that can be |
| * called by ``encodestrip routines'' w/o concern |
| * for infinite recursion. |
| */ |
| TIFFFlushData1(tif) |
| register TIFF *tif; |
| { |
| if (tif->tif_rawcc > 0) { |
| if (tif->tif_dir.td_fillorder != tif->tif_fillorder && |
| (tif->tif_flags & TIFF_NOBITREV) == 0) |
| TIFFReverseBits((u_char *)tif->tif_rawdata, |
| tif->tif_rawcc); |
| if (!TIFFAppendToStrip(tif, |
| isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip, |
| (u_char *)tif->tif_rawdata, tif->tif_rawcc)) |
| return (0); |
| tif->tif_rawcc = 0; |
| tif->tif_rawcp = tif->tif_rawdata; |
| } |
| return (1); |
| } |