| /* |
| * 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. |
| * |
| * "Null" Compression Algorithm Support. |
| */ |
| #include "tiffiop.h" |
| |
| static int |
| DumpFixupTags(TIFF* tif) |
| { |
| (void) tif; |
| return (1); |
| } |
| |
| /* |
| * Encode a hunk of pixels. |
| */ |
| static int |
| DumpModeEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s) |
| { |
| (void) s; |
| while (cc > 0) { |
| tmsize_t n; |
| |
| n = cc; |
| if (tif->tif_rawcc + n > tif->tif_rawdatasize) |
| n = tif->tif_rawdatasize - tif->tif_rawcc; |
| |
| assert( n > 0 ); |
| |
| /* |
| * Avoid copy if client has setup raw |
| * data buffer to avoid extra copy. |
| */ |
| if (tif->tif_rawcp != pp) |
| _TIFFmemcpy(tif->tif_rawcp, pp, n); |
| tif->tif_rawcp += n; |
| tif->tif_rawcc += n; |
| pp += n; |
| cc -= n; |
| if (tif->tif_rawcc >= tif->tif_rawdatasize && |
| !TIFFFlushData1(tif)) |
| return (0); |
| } |
| return (1); |
| } |
| |
| /* |
| * Decode a hunk of pixels. |
| */ |
| static int |
| DumpModeDecode(TIFF* tif, uint8* buf, tmsize_t cc, uint16 s) |
| { |
| static const char module[] = "DumpModeDecode"; |
| (void) s; |
| if (tif->tif_rawcc < cc) { |
| #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__)) |
| TIFFErrorExt(tif->tif_clientdata, module, |
| "Not enough data for scanline %lu, expected a request for at most %I64d bytes, got a request for %I64d bytes", |
| (unsigned long) tif->tif_row, |
| (signed __int64) tif->tif_rawcc, |
| (signed __int64) cc); |
| #else |
| TIFFErrorExt(tif->tif_clientdata, module, |
| "Not enough data for scanline %lu, expected a request for at most %lld bytes, got a request for %lld bytes", |
| (unsigned long) tif->tif_row, |
| (signed long long) tif->tif_rawcc, |
| (signed long long) cc); |
| #endif |
| return (0); |
| } |
| /* |
| * Avoid copy if client has setup raw |
| * data buffer to avoid extra copy. |
| */ |
| if (tif->tif_rawcp != buf) |
| _TIFFmemcpy(buf, tif->tif_rawcp, cc); |
| tif->tif_rawcp += cc; |
| tif->tif_rawcc -= cc; |
| return (1); |
| } |
| |
| /* |
| * Seek forwards nrows in the current strip. |
| */ |
| static int |
| DumpModeSeek(TIFF* tif, uint32 nrows) |
| { |
| tif->tif_rawcp += nrows * tif->tif_scanlinesize; |
| tif->tif_rawcc -= nrows * tif->tif_scanlinesize; |
| return (1); |
| } |
| |
| /* |
| * Initialize dump mode. |
| */ |
| int |
| TIFFInitDumpMode(TIFF* tif, int scheme) |
| { |
| (void) scheme; |
| tif->tif_fixuptags = DumpFixupTags; |
| tif->tif_decoderow = DumpModeDecode; |
| tif->tif_decodestrip = DumpModeDecode; |
| tif->tif_decodetile = DumpModeDecode; |
| tif->tif_encoderow = DumpModeEncode; |
| tif->tif_encodestrip = DumpModeEncode; |
| tif->tif_encodetile = DumpModeEncode; |
| tif->tif_seek = DumpModeSeek; |
| return (1); |
| } |
| /* |
| * Local Variables: |
| * mode: c |
| * c-basic-offset: 8 |
| * fill-column: 78 |
| * End: |
| */ |