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[GNUnet-SVN] r9793 - Extractor/src/plugins
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From: |
gnunet |
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Subject: |
[GNUnet-SVN] r9793 - Extractor/src/plugins |
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Date: |
Fri, 18 Dec 2009 18:37:16 +0100 |
Author: grothoff
Date: 2009-12-18 18:37:16 +0100 (Fri, 18 Dec 2009)
New Revision: 9793
Added:
Extractor/src/plugins/real_extractor.c
Removed:
Extractor/src/plugins/realextractor.c
Modified:
Extractor/src/plugins/Makefile.am
Extractor/src/plugins/flv_extractor.c
Log:
real
Modified: Extractor/src/plugins/Makefile.am
===================================================================
--- Extractor/src/plugins/Makefile.am 2009-12-18 17:21:02 UTC (rev 9792)
+++ Extractor/src/plugins/Makefile.am 2009-12-18 17:37:16 UTC (rev 9793)
@@ -86,6 +86,7 @@
$(ogg) \
$(ole2) \
$(pdf) \
+ libextractor_real.la \
$(rpm) \
$(thumbgtk)
@@ -222,6 +223,11 @@
$(top_builddir)/src/common/libextractor_common.la \
-lpoppler
+libextractor_real_la_SOURCES = \
+ real_extractor.c
+libextractor_real_la_LDFLAGS = \
+ $(PLUGINFLAGS)
+
libextractor_rpm_la_SOURCES = \
rpm_extractor.c
libextractor_rpm_la_LDFLAGS = \
@@ -256,7 +262,6 @@
libextractor_png.la \
libextractor_ps.la \
$(extraqt) \
- libextractor_real.la \
libextractor_riff.la \
libextractor_s3m.la \
libextractor_sid.la \
@@ -332,11 +337,6 @@
libextractor_zip_la_LIBADD = \
$(top_builddir)/src/main/libextractor.la
-libextractor_real_la_SOURCES = \
- realextractor.c
-libextractor_real_la_LDFLAGS = \
- $(PLUGINFLAGS)
-
libextractor_mpeg_la_SOURCES = \
mpegextractor.c
libextractor_mpeg_la_LDFLAGS = \
Modified: Extractor/src/plugins/flv_extractor.c
===================================================================
--- Extractor/src/plugins/flv_extractor.c 2009-12-18 17:21:02 UTC (rev
9792)
+++ Extractor/src/plugins/flv_extractor.c 2009-12-18 17:37:16 UTC (rev
9793)
@@ -1,6 +1,6 @@
/*
This file is part of libextractor.
- Copyright (C) 2007 Heikki Lindholm
+ Copyright (C) 2007, 2009 Heikki Lindholm
libextractor is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
Copied: Extractor/src/plugins/real_extractor.c (from rev 9791,
Extractor/src/plugins/realextractor.c)
===================================================================
--- Extractor/src/plugins/real_extractor.c (rev 0)
+++ Extractor/src/plugins/real_extractor.c 2009-12-18 17:37:16 UTC (rev
9793)
@@ -0,0 +1,409 @@
+/*
+ This file is part of libextractor.
+ (C) 2002, 2003, 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 <stdint.h>
+
+#define UINT32 uint32_t
+#define UINT16 uint16_t
+#define UINT8 uint8_t
+
+typedef struct
+{
+ UINT32 object_id;
+ UINT32 size;
+ UINT16 object_version; /* must be 0 */
+ UINT16 stream_number;
+ UINT32 max_bit_rate;
+ UINT32 avg_bit_rate;
+ UINT32 max_packet_size;
+ UINT32 avg_packet_size;
+ UINT32 start_time;
+ UINT32 preroll;
+ UINT32 duration;
+ UINT8 stream_name_size;
+ UINT8 data[0]; /* variable length section */
+ /*
+ UINT8[stream_name_size] stream_name;
+ UINT8 mime_type_size;
+ UINT8[mime_type_size] mime_type;
+ UINT32 type_specific_len;
+ UINT8[type_specific_len] type_specific_data;
+ */
+} Media_Properties;
+
+typedef struct
+{
+ UINT32 object_id;
+ UINT32 size;
+ UINT16 object_version; /* must be 0 */
+ UINT16 title_len;
+ UINT8 data[0]; /* variable length section */
+ /*
+ UINT8[title_len] title;
+ UINT16 author_len;
+ UINT8[author_len] author;
+ UINT16 copyright_len;
+ UINT8[copyright_len] copyright;
+ UINT16 comment_len;
+ UINT8[comment_len] comment;
+ */
+} Content_Description;
+/* author, copyright and comment are supposed to be ASCII */
+
+#define REAL_HEADER 0x2E524d46
+#define MDPR_HEADER 0x4D445052
+#define CONT_HEADER 0x434F4e54
+
+#define RAFF4_HEADER 0x2E7261FD
+
+
+static int
+processMediaProperties (const Media_Properties * prop,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
+{
+
+ UINT8 mime_type_size;
+ UINT32 prop_size;
+
+ prop_size = ntohl (prop->size);
+ if (prop_size <= sizeof (Media_Properties))
+ return 0;
+ if (0 != prop->object_version)
+ return 0;
+ if (prop_size <= prop->stream_name_size + sizeof (UINT8)
+ + sizeof (Media_Properties))
+ return 0;
+
+ mime_type_size = prop->data[prop->stream_name_size];
+ if (mime_type_size > 2048)
+ return 0; /* unrealistic */
+ if (prop_size > prop->stream_name_size + sizeof (UINT8) +
+ +mime_type_size + sizeof (Media_Properties))
+ {
+ char data[mime_type_size + 1];
+ memcpy (data, &prop->data[prop->stream_name_size + 1], mime_type_size);
+ data[mime_type_size] = '\0';
+
+ return proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ data,
+ strlen (data));
+ }
+ return 0;
+}
+
+static int
+processContentDescription (const Content_Description * prop,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
+{
+ UINT16 author_len;
+ UINT16 copyright_len;
+ UINT16 comment_len;
+ UINT16 title_len;
+ char *title;
+ char *author;
+ char *copyright;
+ char *comment;
+ UINT32 prop_size;
+ int ret;
+
+ prop_size = ntohl (prop->size);
+ if (prop_size <= sizeof (Content_Description))
+ return 0;
+ if (0 != prop->object_version)
+ return 0;
+ title_len = ntohs (prop->title_len);
+ if (prop_size <= title_len + sizeof (UINT16) + sizeof (Content_Description))
+ return 0;
+ author_len = ntohs (*(UINT16 *) & prop->data[title_len]);
+ if (prop_size <= title_len + sizeof (UINT16)
+ + author_len + sizeof (Content_Description))
+ return 0;
+
+ copyright_len = ntohs (*(UINT16 *) & prop->data[title_len +
+ author_len +
+ sizeof (UINT16)]);
+
+ if (prop_size <= title_len + 2 * sizeof (UINT16)
+ + author_len + copyright_len + sizeof (Content_Description))
+ return 0;
+
+ comment_len = ntohs (*(UINT16 *) & prop->data[title_len +
+ author_len +
+ copyright_len +
+ 2 * sizeof (UINT16)]);
+
+ if (prop_size < title_len + 3 * sizeof (UINT16)
+ + author_len + copyright_len + comment_len
+ + sizeof (Content_Description))
+ return 0;
+
+ title = malloc (title_len + 1);
+ memcpy (title, &prop->data[0], title_len);
+ title[title_len] = '\0';
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_TITLE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ title,
+ strlen (title)+1);
+ free (title);
+ if (ret != 0)
+ return ret;
+
+ author = malloc (author_len + 1);
+ memcpy (author, &prop->data[title_len + sizeof (UINT16)], author_len);
+ author[author_len] = '\0';
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_AUTHOR_NAME,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ author,
+ strlen (author)+1);
+ free (author);
+ if (ret != 0)
+ return ret;
+
+ copyright = malloc (copyright_len + 1);
+ memcpy (copyright,
+ &prop->data[title_len + sizeof (UINT16) * 2 + author_len],
+ copyright_len);
+ copyright[copyright_len] = '\0';
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_COPYRIGHT,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ copyright,
+ strlen (copyright)+1);
+ free (copyright);
+ if (ret != 0)
+ return ret;
+
+ comment = malloc (comment_len + 1);
+ memcpy (comment,
+ &prop->data[title_len + sizeof (UINT16) * 3 + author_len +
+ copyright_len], comment_len);
+ comment[comment_len] = '\0';
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_COMMENT,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ comment,
+ strlen (comment)+1);
+ free (comment);
+ if (ret != 0)
+ return ret;
+ return 0;
+}
+
+typedef struct RAFF4_header
+{
+ unsigned short version;
+ unsigned short revision;
+ unsigned short header_length;
+ unsigned short compression_type;
+ unsigned int granularity;
+ unsigned int total_bytes;
+ unsigned int bytes_per_minute;
+ unsigned int bytes_per_minute2;
+ unsigned short interleave_factor;
+ unsigned short interleave_block_size;
+ unsigned int user_data;
+ float sample_rate;
+ unsigned short sample_size;
+ unsigned short channels;
+ unsigned char interleave_code[5];
+ unsigned char compression_code[5];
+ unsigned char is_interleaved;
+ unsigned char copy_byte;
+ unsigned char stream_type;
+ /*
+ unsigned char tlen;
+ unsigned char title[tlen];
+ unsigned char alen;
+ unsigned char author[alen];
+ unsigned char clen;
+ unsigned char copyright[clen];
+ unsigned char aplen;
+ unsigned char app[aplen]; */
+} RAFF4_header;
+
+#define RAFF4_HDR_SIZE 53
+
+static char *
+stndup (const char *str, size_t n)
+{
+ char *tmp;
+ tmp = malloc (n + 1);
+ tmp[n] = '\0';
+ memcpy (tmp, str, n);
+ return tmp;
+}
+
+/* audio/vnd.rn-realaudio */
+int
+EXTRACTOR_real_extract (const unsigned char *data,
+ size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *options)
+{
+ const unsigned char *pos;
+ const unsigned char *end;
+ unsigned int length;
+ const RAFF4_header *hdr;
+ unsigned char tlen;
+ unsigned char alen;
+ unsigned char clen;
+ unsigned char aplen;
+ char *x;
+ int ret;
+
+ if (size <= 2 * sizeof (int))
+ return 0;
+ if (RAFF4_HEADER == ntohl (*(int *) data))
+ {
+ /* HELIX */
+ if (size <= RAFF4_HDR_SIZE + 16 + 4)
+ return 0;
+ if (0 != proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ "audio/vnd.rn-realaudio",
+ strlen ("audio/vnd.rn-realaudio")+1))
+ return 1;
+ hdr = (const RAFF4_header *) &data[16];
+ if (ntohs (hdr->header_length) + 16 > size)
+ return 0;
+ tlen = data[16 + RAFF4_HDR_SIZE];
+ if (tlen + RAFF4_HDR_SIZE + 20 > size)
+ return 0;
+ alen = data[17 + tlen + RAFF4_HDR_SIZE];
+ if (tlen + alen + RAFF4_HDR_SIZE + 20 > size)
+ return 0;
+ clen = data[18 + tlen + alen + RAFF4_HDR_SIZE];
+ if (tlen + alen + clen + RAFF4_HDR_SIZE + 20 > size)
+ return 0;
+ aplen = data[19 + tlen + clen + alen + RAFF4_HDR_SIZE];
+ if (tlen + alen + clen + aplen + RAFF4_HDR_SIZE + 20 > size)
+ return 0;
+ ret = 0;
+ if ( (tlen > 0) && (ret == 0) )
+ {
+ x = stndup ((const char *) &data[17 + RAFF4_HDR_SIZE], tlen);
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ x,
+ strlen (x)+1);
+ free (x);
+ }
+ if ( (alen > 0) && (ret == 0) )
+ {
+ x = stndup ((const char *) &data[18 + RAFF4_HDR_SIZE + tlen], alen);
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ x,
+ strlen (x)+1);
+ free (x);
+ }
+ if ( (clen > 0) && (ret == 0) )
+ {
+ x = stndup ((const char *) &data[19 + RAFF4_HDR_SIZE + tlen + alen],
clen);
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ x,
+ strlen (x)+1);
+ free (x);
+ }
+ if ( (aplen > 0) && (ret == 0) )
+ {
+ x = stndup ((const char *) &data[20 + RAFF4_HDR_SIZE + tlen + alen +
clen], aplen);
+ ret = proc (proc_cls,
+ "real",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ x,
+ strlen (x)+1);
+ free (x);
+ }
+ return ret;
+ }
+ if (REAL_HEADER == ntohl (*(int *) data))
+ {
+ /* old real */
+ end = &data[size];
+ pos = &data[0];
+ ret = 0;
+ while (0 == ret)
+ {
+ if ((pos + 8 >= end) || (pos + 8 < pos))
+ break;
+ length = ntohl (*(((unsigned int *) pos) + 1));
+ if (length <= 0)
+ break;
+ if ((pos + length >= end) || (pos + length < pos))
+ break;
+ switch (ntohl (*((unsigned int *) pos)))
+ {
+ case MDPR_HEADER:
+ ret = processMediaProperties ((Media_Properties *) pos,
+ proc,
+ proc_cls);
+ pos += length;
+ break;
+ case CONT_HEADER:
+ ret = processContentDescription ((Content_Description *) pos,
+ proc,
+ proc_cls);
+ pos += length;
+ break;
+ case REAL_HEADER: /* treat like default */
+ default:
+ pos += length;
+ break;
+ }
+ }
+ return ret;
+ }
+ return 0;
+}
Deleted: Extractor/src/plugins/realextractor.c
===================================================================
--- Extractor/src/plugins/realextractor.c 2009-12-18 17:21:02 UTC (rev
9792)
+++ Extractor/src/plugins/realextractor.c 2009-12-18 17:37:16 UTC (rev
9793)
@@ -1,349 +0,0 @@
-/*
- This file is part of libextractor.
- (C) 2002, 2003 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"
-
-#define UINT32 unsigned int
-#define UINT16 unsigned short
-#define UINT8 unsigned char
-
-typedef struct
-{
- UINT32 object_id;
- UINT32 size;
- UINT16 object_version; /* must be 0 */
- UINT16 stream_number;
- UINT32 max_bit_rate;
- UINT32 avg_bit_rate;
- UINT32 max_packet_size;
- UINT32 avg_packet_size;
- UINT32 start_time;
- UINT32 preroll;
- UINT32 duration;
- UINT8 stream_name_size;
- UINT8 data[0]; /* variable length section */
- /*
- UINT8[stream_name_size] stream_name;
- UINT8 mime_type_size;
- UINT8[mime_type_size] mime_type;
- UINT32 type_specific_len;
- UINT8[type_specific_len] type_specific_data;
- */
-} Media_Properties;
-
-typedef struct
-{
- UINT32 object_id;
- UINT32 size;
- UINT16 object_version; /* must be 0 */
- UINT16 title_len;
- UINT8 data[0]; /* variable length section */
- /*
- UINT8[title_len] title;
- UINT16 author_len;
- UINT8[author_len] author;
- UINT16 copyright_len;
- UINT8[copyright_len] copyright;
- UINT16 comment_len;
- UINT8[comment_len] comment;
- */
-} Content_Description;
-/* author, copyright and comment are supposed to be ASCII */
-
-#define REAL_HEADER 0x2E524d46
-#define MDPR_HEADER 0x4D445052
-#define CONT_HEADER 0x434F4e54
-
-#define RAFF4_HEADER 0x2E7261FD
-
-static struct EXTRACTOR_Keywords *
-addKeyword (EXTRACTOR_KeywordType type,
- char *keyword, struct EXTRACTOR_Keywords *next)
-{
- EXTRACTOR_KeywordList *result;
-
- if (keyword == NULL)
- return next;
- result = malloc (sizeof (EXTRACTOR_KeywordList));
- result->next = next;
- result->keyword = keyword;
- result->keywordType = type;
- return result;
-}
-
-static struct EXTRACTOR_Keywords *
-processMediaProperties (const Media_Properties * prop,
- struct EXTRACTOR_Keywords *prev)
-{
-
- UINT8 mime_type_size;
- UINT32 prop_size;
- char *data;
-
- prop_size = ntohl (prop->size);
- if (prop_size <= sizeof (Media_Properties))
- return prev;
- if (0 != prop->object_version)
- return prev;
- if (prop_size <= prop->stream_name_size + sizeof (UINT8)
- + sizeof (Media_Properties))
- return prev;
-
- mime_type_size = prop->data[prop->stream_name_size];
- if (prop_size <= prop->stream_name_size + sizeof (UINT8) +
- +mime_type_size + sizeof (Media_Properties))
- return prev;
-
- data = malloc (mime_type_size + 1);
- memcpy (data, &prop->data[prop->stream_name_size + 1], mime_type_size);
- data[mime_type_size] = '\0';
-
- return addKeyword (EXTRACTOR_MIMETYPE, data, prev);
-}
-
-static struct EXTRACTOR_Keywords *
-processContentDescription (const Content_Description * prop,
- struct EXTRACTOR_Keywords *prev)
-{
-
-
- UINT16 author_len;
- UINT16 copyright_len;
- UINT16 comment_len;
- UINT16 title_len;
- char *title;
- char *author;
- char *copyright;
- char *comment;
- UINT32 prop_size;
-
- prop_size = ntohl (prop->size);
- if (prop_size <= sizeof (Content_Description))
- return prev;
- if (0 != prop->object_version)
- return prev;
- title_len = ntohs (prop->title_len);
- if (prop_size <= title_len + sizeof (UINT16) + sizeof (Content_Description))
- return prev;
-
-
- author_len = ntohs (*(UINT16 *) & prop->data[title_len]);
-
- if (prop_size <= title_len + sizeof (UINT16)
- + author_len + sizeof (Content_Description))
- return prev;
-
- copyright_len = ntohs (*(UINT16 *) & prop->data[title_len +
- author_len +
- sizeof (UINT16)]);
-
- if (prop_size <= title_len + 2 * sizeof (UINT16)
- + author_len + copyright_len + sizeof (Content_Description))
- return prev;
-
- comment_len = ntohs (*(UINT16 *) & prop->data[title_len +
- author_len +
- copyright_len +
- 2 * sizeof (UINT16)]);
-
- if (prop_size < title_len + 3 * sizeof (UINT16)
- + author_len + copyright_len + comment_len
- + sizeof (Content_Description))
- return prev;
-
- title = malloc (title_len + 1);
- memcpy (title, &prop->data[0], title_len);
- title[title_len] = '\0';
-
- prev = addKeyword (EXTRACTOR_TITLE, title, prev);
-
- author = malloc (author_len + 1);
- memcpy (author, &prop->data[title_len + sizeof (UINT16)], author_len);
- author[author_len] = '\0';
-
- prev = addKeyword (EXTRACTOR_AUTHOR, author, prev);
-
- copyright = malloc (copyright_len + 1);
- memcpy (copyright,
- &prop->data[title_len + sizeof (UINT16) * 2 + author_len],
- copyright_len);
- copyright[copyright_len] = '\0';
-
-
- prev = addKeyword (EXTRACTOR_COPYRIGHT, copyright, prev);
-
-
- comment = malloc (comment_len + 1);
- memcpy (comment,
- &prop->data[title_len + sizeof (UINT16) * 3 + author_len +
- copyright_len], comment_len);
- comment[comment_len] = '\0';
-
- prev = addKeyword (EXTRACTOR_COMMENT, comment, prev);
-
- return prev;
-}
-
-typedef struct RAFF4_header
-{
- unsigned short version;
- unsigned short revision;
- unsigned short header_length;
- unsigned short compression_type;
- unsigned int granularity;
- unsigned int total_bytes;
- unsigned int bytes_per_minute;
- unsigned int bytes_per_minute2;
- unsigned short interleave_factor;
- unsigned short interleave_block_size;
- unsigned int user_data;
- float sample_rate;
- unsigned short sample_size;
- unsigned short channels;
- unsigned char interleave_code[5];
- unsigned char compression_code[5];
- unsigned char is_interleaved;
- unsigned char copy_byte;
- unsigned char stream_type;
- /*
- unsigned char tlen;
- unsigned char title[tlen];
- unsigned char alen;
- unsigned char author[alen];
- unsigned char clen;
- unsigned char copyright[clen];
- unsigned char aplen;
- unsigned char app[aplen]; */
-} RAFF4_header;
-
-#define RAFF4_HDR_SIZE 53
-
-static char *
-stndup (const char *str, size_t n)
-{
- char *tmp;
- tmp = malloc (n + 1);
- tmp[n] = '\0';
- memcpy (tmp, str, n);
- return tmp;
-}
-
-/* audio/vnd.rn-realaudio */
-struct EXTRACTOR_Keywords *
-libextractor_real_extract (unsigned char *filename,
- const unsigned char *data,
- size_t size, struct EXTRACTOR_Keywords *prev)
-{
- const unsigned char *pos;
- const unsigned char *end;
- struct EXTRACTOR_Keywords *result;
- unsigned int length;
- const RAFF4_header *hdr;
- unsigned char tlen;
- unsigned char alen;
- unsigned char clen;
- unsigned char aplen;
-
- if (size <= 2 * sizeof (int))
- return prev;
-
- if (RAFF4_HEADER == ntohl (*(int *) data))
- {
- /* HELIX */
- if (size <= RAFF4_HDR_SIZE + 16 + 4)
- return prev;
- prev = addKeyword (EXTRACTOR_MIMETYPE,
- strdup ("audio/vnd.rn-realaudio"), prev);
- hdr = (const RAFF4_header *) &data[16];
- if (ntohs (hdr->header_length) + 16 > size)
- return prev;
- tlen = data[16 + RAFF4_HDR_SIZE];
- if (tlen + RAFF4_HDR_SIZE + 20 > size)
- return prev;
- alen = data[17 + tlen + RAFF4_HDR_SIZE];
- if (tlen + alen + RAFF4_HDR_SIZE + 20 > size)
- return prev;
- clen = data[18 + tlen + alen + RAFF4_HDR_SIZE];
- if (tlen + alen + clen + RAFF4_HDR_SIZE + 20 > size)
- return prev;
- aplen = data[19 + tlen + clen + alen + RAFF4_HDR_SIZE];
- if (tlen + alen + clen + aplen + RAFF4_HDR_SIZE + 20 > size)
- return prev;
-
- if (tlen > 0)
- prev = addKeyword (EXTRACTOR_TITLE,
- stndup ((const char *) &data[17 + RAFF4_HDR_SIZE],
- tlen), prev);
- if (alen > 0)
- prev = addKeyword (EXTRACTOR_AUTHOR,
- stndup ((const char *)
- &data[18 + RAFF4_HDR_SIZE + tlen], alen),
- prev);
- if (clen > 0)
- prev = addKeyword (EXTRACTOR_COPYRIGHT,
- stndup ((const char *)
- &data[19 + RAFF4_HDR_SIZE + tlen + alen],
- clen), prev);
- if (aplen > 0)
- prev = addKeyword (EXTRACTOR_SOFTWARE,
- stndup ((const char *)
- &data[20 + RAFF4_HDR_SIZE + tlen + alen +
- clen], aplen), prev);
- return prev;
-
- }
- if (REAL_HEADER == ntohl (*(int *) data))
- {
- /* old real */
- result = prev;
- end = &data[size];
- pos = &data[0];
- while (1)
- {
- if ((pos + 8 >= end) || (pos + 8 < pos))
- break;
- length = ntohl (*(((unsigned int *) pos) + 1));
- if (length <= 0)
- break;
- if ((pos + length >= end) || (pos + length < pos))
- break;
- switch (ntohl (*((unsigned int *) pos)))
- {
- case MDPR_HEADER:
- result = processMediaProperties ((Media_Properties *) pos,
- result);
- pos += length;
- break;
- case CONT_HEADER:
- result = processContentDescription ((Content_Description *) pos,
- result);
- pos += length;
- break;
- case REAL_HEADER: /* treat like default */
- default:
- pos += length;
- break;
- }
- }
- return result;
- }
- return prev;
-}
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