| /* |
| * 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. |
| * |
| * Various routines support external extension of the tag set, and other |
| * application extension capabilities. |
| */ |
| |
| #include "tiffiop.h" |
| |
| int TIFFGetTagListCount(TIFF *tif) |
| |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| |
| return td->td_customValueCount; |
| } |
| |
| uint32_t TIFFGetTagListEntry(TIFF *tif, int tag_index) |
| |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| |
| if (tag_index < 0 || tag_index >= td->td_customValueCount) |
| return (uint32_t)(-1); |
| else |
| return td->td_customValues[tag_index].info->field_tag; |
| } |
| |
| /* |
| ** This provides read/write access to the TIFFTagMethods within the TIFF |
| ** structure to application code without giving access to the private |
| ** TIFF structure. |
| */ |
| TIFFTagMethods *TIFFAccessTagMethods(TIFF *tif) |
| |
| { |
| return &(tif->tif_tagmethods); |
| } |
| |
| void *TIFFGetClientInfo(TIFF *tif, const char *name) |
| |
| { |
| TIFFClientInfoLink *psLink = tif->tif_clientinfo; |
| |
| while (psLink != NULL && strcmp(psLink->name, name) != 0) |
| psLink = psLink->next; |
| |
| if (psLink != NULL) |
| return psLink->data; |
| else |
| return NULL; |
| } |
| |
| void TIFFSetClientInfo(TIFF *tif, void *data, const char *name) |
| |
| { |
| TIFFClientInfoLink *psLink = tif->tif_clientinfo; |
| |
| /* |
| ** Do we have an existing link with this name? If so, just |
| ** set it. |
| */ |
| while (psLink != NULL && strcmp(psLink->name, name) != 0) |
| psLink = psLink->next; |
| |
| if (psLink != NULL) |
| { |
| psLink->data = data; |
| return; |
| } |
| |
| /* |
| ** Create a new link. |
| */ |
| |
| psLink = |
| (TIFFClientInfoLink *)_TIFFmallocExt(tif, sizeof(TIFFClientInfoLink)); |
| assert(psLink != NULL); |
| psLink->next = tif->tif_clientinfo; |
| psLink->name = (char *)_TIFFmallocExt(tif, (tmsize_t)(strlen(name) + 1)); |
| assert(psLink->name != NULL); |
| strcpy(psLink->name, name); |
| psLink->data = data; |
| |
| tif->tif_clientinfo = psLink; |
| } |