93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/*
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File: file_x3f.c
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Copyright (C) 1998-2005,2007 Christophe GRENIER <grenier@cgsecurity.org>
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This software is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write the Free Software Foundation, Inc., 51
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Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_x3f)
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include <stdio.h>
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#include "types.h"
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#include "filegen.h"
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#include "common.h"
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#if !defined(SINGLE_FORMAT)
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extern const file_hint_t file_hint_x3i;
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#endif
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/*@ requires valid_register_header_check(file_stat); */
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static void register_header_check_x3f(file_stat_t *file_stat);
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const file_hint_t file_hint_x3f = {
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.extension = "x3f",
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.description = "Sigma/Foveon X3 raw picture",
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.max_filesize = PHOTOREC_MAX_FILE_SIZE,
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.recover = 1,
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.enable_by_default = 1,
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.register_header_check = ®ister_header_check_x3f
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};
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struct x3f_header
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{
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uint32_t id;
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uint32_t version;
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unsigned char uuid[16];
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uint32_t mark;
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uint32_t columns;
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uint32_t rows;
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uint32_t rotation;
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/* version 2.1 and later have additional fields */
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} __attribute__((gcc_struct, __packed__));
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/*@
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@ requires buffer_size >= sizeof(struct x3f_header);
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@ requires separation: \separated(&file_hint_x3f, buffer+(..), file_recovery, file_recovery_new);
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@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
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@ ensures valid_header_check_result(\result, file_recovery_new);
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@ assigns *file_recovery_new;
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@*/
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static int header_check_x3f(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)
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{
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const struct x3f_header *h = (const struct x3f_header *)buffer;
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const unsigned int rotation = le32(h->rotation);
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if(le32(h->rows) == 0 || le32(h->columns) == 0)
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return 0;
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if(rotation != 0 && rotation != 90 && rotation != 180 && rotation != 270)
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return 0;
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#if !defined(SINGLE_FORMAT)
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if(file_recovery->file_stat != NULL && file_recovery->file_stat->file_hint == &file_hint_x3i && safe_header_only == 0)
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return 0;
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#endif
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reset_file_recovery(file_recovery_new);
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file_recovery_new->extension = file_hint_x3f.extension;
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file_recovery_new->min_filesize = 1024;
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return 1;
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}
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static void register_header_check_x3f(file_stat_t *file_stat)
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{
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static const unsigned char x3f_header[4] = { 'F', 'O', 'V', 'b' };
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register_header_check(0, x3f_header, sizeof(x3f_header), &header_check_x3f, file_stat);
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}
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#endif
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