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authorChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
commit9928d99936105b4653d2d1b8ca74dc3ffba5c71e (patch)
tree06aa4f5e9f0055027c6fb54dd47a8414cf2fba32 /src/file_dpx.c
First version in git
Diffstat (limited to 'src/file_dpx.c')
-rw-r--r--src/file_dpx.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/src/file_dpx.c b/src/file_dpx.c
new file mode 100644
index 0000000..9a1e12b
--- /dev/null
+++ b/src/file_dpx.c
@@ -0,0 +1,92 @@
+/*
+
+ File: file_dpx.c
+
+ Copyright (C) 2007 Christophe GRENIER <grenier@cgsecurity.org>
+
+ This software 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 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program; if not, write the Free Software Foundation, Inc., 51
+ Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#include <stdio.h>
+#include "types.h"
+#include "filegen.h"
+#include "common.h"
+
+static void register_header_check_dpx(file_stat_t *file_stat);
+static int header_check_dpx(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new);
+
+const file_hint_t file_hint_dpx= {
+ .extension="dpx",
+ .description="Cineon image file/SMTPE DPX",
+ .min_header_distance=0,
+ .max_filesize=10*1024*1024,
+ .recover=1,
+ .header_check=&header_check_dpx,
+ .register_header_check=&register_header_check_dpx
+};
+
+static const unsigned char sdpx_header[4]= {'S', 'D', 'P', 'X'};
+static const unsigned char xpds_header[4]= {'X', 'P', 'D', 'S'};
+static const unsigned char ver10[8]= {'V', '1', '.', '0', 0x00, 0x00, 0x00, 0x00};
+
+/* Header information from http://www.cineon.com/ff_draft.php */
+struct header_dpx
+{
+ uint32_t magic_num; /* magic number 0x53445058 (SDPX) or 0x58504453 (XPDS) */
+ uint32_t offset; /* offset to image data in bytes */
+ char vers[8]; /* which header format version is being used (v1.0)*/
+ uint32_t file_size; /* file size in bytes */
+ uint32_t ditto_key; /* read time short cut - 0 = same, 1 = new */
+ uint32_t gen_hdr_size; /* generic header length in bytes */
+ uint32_t ind_hdr_size; /* industry header length in bytes */
+ uint32_t user_data_size; /* user-defined data length in bytes */
+ char file_name[100]; /* image file name */
+ char create_time[24]; /* file creation date "yyyy:mm:dd:hh:mm:ss:LTZ" */
+ char creator[100]; /* file creator's name */
+ char project[200]; /* project name */
+ char copyright[200]; /* right to use or copyright info */
+ uint32_t key; /* encryption ( FFFFFFFF = unencrypted ) */
+ char Reserved[104]; /* reserved field TBD (need to pad) */
+} __attribute__ ((__packed__));
+
+static void register_header_check_dpx(file_stat_t *file_stat)
+{
+ register_header_check(0, sdpx_header,sizeof(sdpx_header), &header_check_dpx, file_stat);
+ register_header_check(0, xpds_header,sizeof(xpds_header), &header_check_dpx, file_stat);
+}
+
+static int header_check_dpx(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
+{
+ const struct header_dpx *dpx=(const struct header_dpx *)buffer;
+ if((memcmp(buffer,sdpx_header,sizeof(sdpx_header))==0 ||
+ memcmp(buffer,xpds_header,sizeof(xpds_header))==0) &&
+ memcmp(dpx->vers, ver10, sizeof(ver10))==0)
+ {
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_dpx.extension;
+ file_recovery_new->calculated_file_size=be32(dpx->file_size);
+ file_recovery_new->data_check=&data_check_size;
+ file_recovery_new->file_check=&file_check_size;
+ return 1;
+ }
+ return 0;
+}