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Adding BPG format.

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Dmitry Brant 2016-01-30 12:35:02 -05:00
parent b7441965e1
commit adbca17366
1 changed files with 91 additions and 0 deletions
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src/file_bpg.c Normal file
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/*
File: file_bpg.c
Copyright (C) 1998-2007 Christophe GRENIER <grenier@cgsecurity.org>
Contribution by Dmitry Brant <me@dmitrybrant.com>
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_bpg(file_stat_t *file_stat);
static int header_check_bpg(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_bpg= {
.extension="bpg",
.description="Better Portable Graphics (BPG) image",
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=&register_header_check_bpg
};
static const unsigned char bpg_header[4]= {'B','P','G',0xFB};
static void register_header_check_bpg(file_stat_t *file_stat)
{
register_header_check(0, bpg_header, sizeof(bpg_header), &header_check_bpg, file_stat);
}
static int getue32(const unsigned char *buffer, const unsigned int buffer_size, unsigned int *buf_ptr)
{
unsigned int value = 0;
unsigned int b;
int bitsRead = 0;
while (*buf_ptr < buffer_size)
{
b = buffer[*buf_ptr++];
value <<= 7;
value |= (b & 0x7F);
if ((b & 0x80) == 0)
break;
bitsRead += 7;
if (bitsRead >= 32)
break;
}
return value;
}
static int header_check_bpg(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)
{
if(buffer[0]=='B' && buffer[1]=='P' && buffer[2]=='G' && buffer[3]==0xFB)
{
unsigned int buf_ptr = 6;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_bpg.extension;
file_recovery_new->min_filesize=100;
// get image width, and throw it away
getue32(buffer, buffer_size, &buf_ptr);
// get image height, and throw it away
getue32(buffer, buffer_size, &buf_ptr);
file_recovery_new->calculated_file_size=(uint64_t)getue32(buffer, buffer_size, &buf_ptr);
file_recovery_new->data_check=&data_check_size;
file_recovery_new->file_check=&file_check_size;
return 1;
}
return 0;
}