commit f9c4fb9fd41ba11a258a6193b9529fc2ef6a2f13
parent 125acede703192d4fe43dc885c232d0b25cf117e
Author: Christian Grothoff <christian@grothoff.org>
Date: Fri, 18 Dec 2009 21:45:18 +0000
tiff
Diffstat:
3 files changed, 263 insertions(+), 243 deletions(-)
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
@@ -94,6 +94,7 @@ plugin_LTLIBRARIES = \
$(rpm) \
libextractor_tar.la \
$(thumbgtk) \
+ libextractor_tiff.la \
libextractor_wav.la \
libextractor_zip.la
@@ -283,6 +284,13 @@ libextractor_thumbnailgtk_la_LDFLAGS = \
libextractor_thumbnailgtk_la_SOURCES = \
thumbnailgtk_extractor.c
+libextractor_tiff_la_SOURCES = \
+ tiff_extractor.c
+libextractor_tiff_la_LDFLAGS = \
+ $(PLUGINFLAGS)
+libextractor_tiff_la_LIBADD = \
+ $(top_builddir)/src/common/libextractor_common.la
+
libextractor_wav_la_SOURCES = \
wav_extractor.c
libextractor_wav_la_LDFLAGS = \
@@ -315,7 +323,6 @@ OLD_LIBS = \
libextractor_s3m.la \
libextractor_sid.la \
libextractor_tar.la \
- libextractor_tiff.la \
$(thumbqt) \
libextractor_xm.la \
libextractor_zip.la
@@ -342,12 +349,6 @@ libextractor_id3v24_la_LDFLAGS = \
libextractor_id3v24_la_LIBADD = \
$(top_builddir)/src/common/libextractor_common.la
-libextractor_tiff_la_SOURCES = \
- tiffextractor.c
-libextractor_tiff_la_LDFLAGS = \
- $(PLUGINFLAGS)
-libextractor_tiff_la_LIBADD = \
- $(top_builddir)/src/common/libextractor_common.la
libextractor_riff_la_SOURCES = \
riffextractor.c
diff --git a/src/plugins/tiff_extractor.c b/src/plugins/tiff_extractor.c
@@ -0,0 +1,255 @@
+/*
+ This file is part of libextractor.
+ (C) 2004, 2009 Vidyut Samanta and Christian Grothoff
+
+ libextractor is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 2, or (at your
+ option) any later version.
+
+ libextractor is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with libextractor; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
+
+#include "platform.h"
+#include "extractor.h"
+#include "pack.h"
+
+#define DEBUG 0
+
+static int
+addKeyword (EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *keyword,
+ enum EXTRACTOR_MetaType type)
+{
+ return proc (proc_cls,
+ "tiff",
+ type,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ keyword,
+ strlen(keyword)+1);
+}
+
+typedef struct
+{
+ unsigned short byteorder;
+ unsigned short fourty_two;
+ unsigned int ifd_offset;
+} TIFF_HEADER;
+#define TIFF_HEADER_SIZE 8
+#define TIFF_HEADER_FIELDS(p) \
+ &(p)->byteorder, \
+ &(p)->fourty_two, \
+ &(p)->ifd_offset
+static char *TIFF_HEADER_SPECS[] = {
+ "hhw",
+ "HHW",
+};
+
+typedef struct
+{
+ unsigned short tag;
+ unsigned short type;
+ unsigned int count;
+ unsigned int value_or_offset;
+} DIRECTORY_ENTRY;
+#define DIRECTORY_ENTRY_SIZE 12
+#define DIRECTORY_ENTRY_FIELDS(p) \
+ &(p)->tag, \
+ &(p)->type, \
+ &(p)->count, \
+ &(p)->value_or_offset
+static char *DIRECTORY_ENTRY_SPECS[] = {
+ "hhww",
+ "HHWW"
+};
+
+#define TAG_LENGTH 0x101
+#define TAG_WIDTH 0x100
+#define TAG_SOFTWARE 0x131
+#define TAG_DAYTIME 0x132
+#define TAG_ARTIST 0x315
+#define TAG_COPYRIGHT 0x8298
+#define TAG_DESCRIPTION 0x10E
+#define TAG_DOCUMENT_NAME 0x10D
+#define TAG_HOST 0x13C
+#define TAG_SCANNER 0x110
+#define TAG_ORIENTATION 0x112
+
+#define TYPE_BYTE 1
+#define TYPE_ASCII 2
+#define TYPE_SHORT 3
+#define TYPE_LONG 4
+#define TYPE_RATIONAL 5
+
+static int
+addASCII (EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *data,
+ size_t size, DIRECTORY_ENTRY * entry,
+ enum EXTRACTOR_MetaType type)
+{
+ if (entry->count > size)
+ return 0; /* invalid! */
+ if (entry->type != TYPE_ASCII)
+ return 0; /* huh? */
+ if (entry->count + entry->value_or_offset > size)
+ return 0;
+ if (data[entry->value_or_offset + entry->count - 1] != 0)
+ return 0;
+ return addKeyword (proc, proc_cls,
+ &data[entry->value_or_offset], type);
+}
+
+
+int
+EXTRACTOR_tiff_extract (const char *data,
+ size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *options)
+{
+ TIFF_HEADER hdr;
+ int byteOrder; /* 0: do not convert;
+ 1: do convert */
+ unsigned int current_ifd;
+ unsigned int length = -1;
+ unsigned int width = -1;
+
+ if (size < TIFF_HEADER_SIZE)
+ return 0; /* can not be tiff */
+ if ((data[0] == 0x49) && (data[1] == 0x49))
+ byteOrder = 0;
+ else if ((data[0] == 0x4D) && (data[1] == 0x4D))
+ byteOrder = 1;
+ else
+ return 0; /* can not be tiff */
+#if __BYTE_ORDER == __BIG_ENDIAN
+ byteOrder = 1 - byteOrder;
+#endif
+ EXTRACTOR_common_cat_unpack (data, TIFF_HEADER_SPECS[byteOrder], TIFF_HEADER_FIELDS (&hdr));
+ if (hdr.fourty_two != 42)
+ return 0; /* can not be tiff */
+ if (hdr.ifd_offset + 6 > size)
+ return 0; /* malformed tiff */
+ if (0 != addKeyword (proc, proc_cls, "image/tiff", EXTRACTOR_METATYPE_MIMETYPE))
+ return 1;
+ current_ifd = hdr.ifd_offset;
+ while (current_ifd != 0)
+ {
+ unsigned short len;
+ unsigned int off;
+ int i;
+ if ( (current_ifd + 6 > size) ||
+ (current_ifd + 6 < current_ifd) )
+ return 0;
+ if (byteOrder == 0)
+ len = data[current_ifd + 1] << 8 | data[current_ifd];
+ else
+ len = data[current_ifd] << 8 | data[current_ifd + 1];
+ if (len * DIRECTORY_ENTRY_SIZE + 2 + 4 + current_ifd > size)
+ {
+#if DEBUG
+ printf ("WARNING: malformed tiff\n");
+#endif
+ return 0;
+ }
+ for (i = 0; i < len; i++)
+ {
+ DIRECTORY_ENTRY entry;
+ off = current_ifd + 2 + DIRECTORY_ENTRY_SIZE * i;
+
+ EXTRACTOR_common_cat_unpack (&data[off],
+ DIRECTORY_ENTRY_SPECS[byteOrder],
+ DIRECTORY_ENTRY_FIELDS (&entry));
+ switch (entry.tag)
+ {
+ case TAG_LENGTH:
+ if ((entry.type == TYPE_SHORT) && (byteOrder == 1))
+ {
+ length = entry.value_or_offset >> 16;
+ }
+ else
+ {
+ length = entry.value_or_offset;
+ }
+ if (width != -1)
+ {
+ char tmp[128];
+ snprintf (tmp,
+ sizeof(tmp), "%ux%u",
+ width, length);
+ addKeyword (proc, proc_cls, strdup (tmp), EXTRACTOR_METATYPE_IMAGE_DIMENSIONS);
+ }
+ break;
+ case TAG_WIDTH:
+ if ((entry.type == TYPE_SHORT) && (byteOrder == 1))
+ width = entry.value_or_offset >> 16;
+ else
+ width = entry.value_or_offset;
+ if (length != -1)
+ {
+ char tmp[128];
+ snprintf (tmp,
+ sizeof(tmp),
+ "%ux%u",
+ width, length);
+ addKeyword (proc, proc_cls, strdup (tmp), EXTRACTOR_METATYPE_IMAGE_DIMENSIONS);
+ }
+ break;
+ case TAG_SOFTWARE:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_SOFTWARE))
+ return 1;
+ break;
+ case TAG_ARTIST:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_ARTIST))
+ return 1;
+ break;
+ case TAG_DOCUMENT_NAME:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_TITLE))
+ return 1;
+ break;
+ case TAG_COPYRIGHT:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_COPYRIGHT))
+ return 1;
+ break;
+ case TAG_DESCRIPTION:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_DESCRIPTION))
+ return 1;
+ break;
+ case TAG_HOST:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_BUILDHOST))
+ return 1;
+ break;
+ case TAG_SCANNER:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_SOURCE))
+ return 1;
+ break;
+ case TAG_DAYTIME:
+ if (0 != addASCII (proc, proc_cls, data, size, &entry, EXTRACTOR_METATYPE_CREATION_DATE))
+ return 1;
+ break;
+ }
+ }
+
+ off = current_ifd + 2 + DIRECTORY_ENTRY_SIZE * len;
+ if (byteOrder == 0)
+ current_ifd =
+ data[off + 3] << 24 | data[off + 2] << 16 |
+ data[off + 1] << 8 | data[off];
+ else
+ current_ifd =
+ data[off] << 24 | data[off + 1] << 16 |
+ data[off + 2] << 8 | data[off + 3];
+ }
+ return 0;
+}
diff --git a/src/plugins/tiffextractor.c b/src/plugins/tiffextractor.c
@@ -1,236 +0,0 @@
-/*
- This file is part of libextractor.
- (C) 2004 Vidyut Samanta and Christian Grothoff
-
- libextractor is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
- option) any later version.
-
- libextractor is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with libextractor; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
-
-#include "platform.h"
-#include "extractor.h"
-#include "pack.h"
-
-#define DEBUG 0
-
-static void
-addKeyword (struct EXTRACTOR_Keywords **list,
- char *keyword, EXTRACTOR_KeywordType type)
-{
- EXTRACTOR_KeywordList *next;
- next = malloc (sizeof (EXTRACTOR_KeywordList));
- next->next = *list;
- next->keyword = keyword;
- next->keywordType = type;
- *list = next;
-}
-
-typedef struct
-{
- unsigned short byteorder;
- unsigned short fourty_two;
- unsigned int ifd_offset;
-} TIFF_HEADER;
-#define TIFF_HEADER_SIZE 8
-#define TIFF_HEADER_FIELDS(p) \
- &(p)->byteorder, \
- &(p)->fourty_two, \
- &(p)->ifd_offset
-static char *TIFF_HEADER_SPECS[] = {
- "hhw",
- "HHW",
-};
-
-typedef struct
-{
- unsigned short tag;
- unsigned short type;
- unsigned int count;
- unsigned int value_or_offset;
-} DIRECTORY_ENTRY;
-#define DIRECTORY_ENTRY_SIZE 12
-#define DIRECTORY_ENTRY_FIELDS(p) \
- &(p)->tag, \
- &(p)->type, \
- &(p)->count, \
- &(p)->value_or_offset
-static char *DIRECTORY_ENTRY_SPECS[] = {
- "hhww",
- "HHWW"
-};
-
-#define TAG_LENGTH 0x101
-#define TAG_WIDTH 0x100
-#define TAG_SOFTWARE 0x131
-#define TAG_DAYTIME 0x132
-#define TAG_ARTIST 0x315
-#define TAG_COPYRIGHT 0x8298
-#define TAG_DESCRIPTION 0x10E
-#define TAG_DOCUMENT_NAME 0x10D
-#define TAG_HOST 0x13C
-#define TAG_SCANNER 0x110
-#define TAG_ORIENTATION 0x112
-
-#define TYPE_BYTE 1
-#define TYPE_ASCII 2
-#define TYPE_SHORT 3
-#define TYPE_LONG 4
-#define TYPE_RATIONAL 5
-
-static void
-addASCII (struct EXTRACTOR_Keywords **prev,
- char *data,
- size_t size, DIRECTORY_ENTRY * entry, EXTRACTOR_KeywordType type)
-{
- if (entry->count > size)
- return; /* invalid! */
- if (entry->type != TYPE_ASCII)
- return; /* huh? */
- if (entry->count + entry->value_or_offset > size)
- return;
- if (data[entry->value_or_offset + entry->count - 1] != 0)
- return;
- addKeyword (prev,
- strdup (&data[entry->value_or_offset]), type);
-}
-
-
-struct EXTRACTOR_Keywords *
-libextractor_tiff_extract (char *filename,
- char *data,
- size_t size, struct EXTRACTOR_Keywords *prev)
-{
- TIFF_HEADER hdr;
- int byteOrder; /* 0: do not convert;
- 1: do convert */
- unsigned int current_ifd;
- unsigned int length = -1;
- unsigned int width = -1;
-
- if (size < TIFF_HEADER_SIZE)
- return prev; /* can not be tiff */
- if ((data[0] == 0x49) && (data[1] == 0x49))
- byteOrder = 0;
- else if ((data[0] == 0x4D) && (data[1] == 0x4D))
- byteOrder = 1;
- else
- return prev; /* can not be tiff */
-#if __BYTE_ORDER == __BIG_ENDIAN
- byteOrder = 1 - byteOrder;
-#endif
- EXTRACTOR_common_cat_unpack (data, TIFF_HEADER_SPECS[byteOrder], TIFF_HEADER_FIELDS (&hdr));
- if (hdr.fourty_two != 42)
- return prev; /* can not be tiff */
- if (hdr.ifd_offset + 6 > size)
- return prev; /* malformed tiff */
- addKeyword (&prev, strdup ("image/tiff"), EXTRACTOR_MIMETYPE);
- current_ifd = hdr.ifd_offset;
- while (current_ifd != 0)
- {
- unsigned short len;
- unsigned int off;
- int i;
- if ( (current_ifd + 6 > size) ||
- (current_ifd + 6 < current_ifd) )
- return prev;
- if (byteOrder == 0)
- len = data[current_ifd + 1] << 8 | data[current_ifd];
- else
- len = data[current_ifd] << 8 | data[current_ifd + 1];
- if (len * DIRECTORY_ENTRY_SIZE + 2 + 4 + current_ifd > size)
- {
-#if DEBUG
- printf ("WARNING: malformed tiff\n");
-#endif
- return prev;
- }
- for (i = 0; i < len; i++)
- {
- DIRECTORY_ENTRY entry;
- off = current_ifd + 2 + DIRECTORY_ENTRY_SIZE * i;
-
- EXTRACTOR_common_cat_unpack (&data[off],
- DIRECTORY_ENTRY_SPECS[byteOrder],
- DIRECTORY_ENTRY_FIELDS (&entry));
- switch (entry.tag)
- {
- case TAG_LENGTH:
- if ((entry.type == TYPE_SHORT) && (byteOrder == 1))
- {
- length = entry.value_or_offset >> 16;
- }
- else
- {
- length = entry.value_or_offset;
- }
- if (width != -1)
- {
- char tmp[128];
- snprintf (tmp, 128, "%ux%u",
- width, length);
- addKeyword (&prev, strdup (tmp), EXTRACTOR_SIZE);
- }
- break;
- case TAG_WIDTH:
- if ((entry.type == TYPE_SHORT) && (byteOrder == 1))
- width = entry.value_or_offset >> 16;
- else
- width = entry.value_or_offset;
- if (length != -1)
- {
- char tmp[128];
- snprintf (tmp, 128, "%ux%u",
- width, length);
- addKeyword (&prev, strdup (tmp), EXTRACTOR_SIZE);
- }
- break;
- case TAG_SOFTWARE:
- addASCII (&prev, data, size, &entry, EXTRACTOR_SOFTWARE);
- break;
- case TAG_ARTIST:
- addASCII (&prev, data, size, &entry, EXTRACTOR_ARTIST);
- break;
- case TAG_DOCUMENT_NAME:
- addASCII (&prev, data, size, &entry, EXTRACTOR_TITLE);
- break;
- case TAG_COPYRIGHT:
- addASCII (&prev, data, size, &entry, EXTRACTOR_COPYRIGHT);
- break;
- case TAG_DESCRIPTION:
- addASCII (&prev, data, size, &entry, EXTRACTOR_DESCRIPTION);
- break;
- case TAG_HOST:
- addASCII (&prev, data, size, &entry, EXTRACTOR_BUILDHOST);
- break;
- case TAG_SCANNER:
- addASCII (&prev, data, size, &entry, EXTRACTOR_SOURCE);
- break;
- case TAG_DAYTIME:
- addASCII (&prev, data, size, &entry, EXTRACTOR_CREATION_DATE);
- break;
- }
- }
-
- off = current_ifd + 2 + DIRECTORY_ENTRY_SIZE * len;
- if (byteOrder == 0)
- current_ifd =
- data[off + 3] << 24 | data[off + 2] << 16 |
- data[off + 1] << 8 | data[off];
- else
- current_ifd =
- data[off] << 24 | data[off + 1] << 16 |
- data[off + 2] << 8 | data[off + 3];
- }
- return prev;
-}
