/* File: file_ysfc100.c Copyright (C) 2016 Christophe GRENIER 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. */ #if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_x4a) #ifdef HAVE_CONFIG_H #include #endif #ifdef HAVE_STRING_H #include #endif #include #include "types.h" #include "filegen.h" #include "common.h" static void register_header_check_ysfc100(file_stat_t *file_stat); const file_hint_t file_hint_x4a= { .extension="x4a", .description="Yamaha-YSFC", .max_filesize=PHOTOREC_MAX_FILE_SIZE, .recover=1, .enable_by_default=1, .register_header_check=®ister_header_check_ysfc100 }; struct x4a_catalog { char type[4]; uint32_t size; } __attribute__ ((gcc_struct, __packed__)); static void file_check_x4a(file_recovery_t *fr) { unsigned char buffer[0x200]; unsigned int i; unsigned int fs=0x80; fr->file_size = 0; fr->offset_error=0; fr->offset_ok=0; if(my_fseek(fr->handle, 0, SEEK_SET) < 0 || fread(&buffer, sizeof(buffer), 1, fr->handle)!=1) return; #ifdef __FRAMAC__ Frama_C_make_unknown(buffer, sizeof(buffer)); #endif /*@ @ loop assigns i, fs; @*/ for(i=0x80; i<0x200; i+=8) { /*@ assert i <= 0x200 - 8; */ const struct x4a_catalog *p=(const struct x4a_catalog *)&buffer[i]; const unsigned int tmp=be32(p->size); if(tmp > fs) fs=tmp; } if(my_fseek(fr->handle, 0, SEEK_SET) < 0 || fread(&buffer, 8, 1, fr->handle)!=1) return; { const struct x4a_catalog *p=(const struct x4a_catalog *)buffer; fr->file_size=(uint64_t)fs+be32(p->size); } } static int header_check_ysfc100(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(memcmp(&buffer[0x10], "Ver 01.00", 8)!=0 || memcmp(&buffer[0x30], "YSFC", 4)!=0) return 0; reset_file_recovery(file_recovery_new); if(memcmp(&buffer[6], "ALL", 3)==0) file_recovery_new->extension=file_hint_x4a.extension; else if(memcmp(&buffer[6], "SONG", 4)==0) file_recovery_new->extension="x4s"; else if(memcmp(&buffer[6], "PATTERN", 7)==0) file_recovery_new->extension="x4p"; else if(memcmp(&buffer[6], "ARPEGGIO", 8)==0) file_recovery_new->extension="x4g"; else file_recovery_new->extension=file_hint_x4a.extension; file_recovery_new->min_filesize=0x200; file_recovery_new->file_check=&file_check_x4a; return 1; } static void register_header_check_ysfc100(file_stat_t *file_stat) { static const unsigned char ysfc100_header[8]= { 'Y' , 'S' , 'F' , 'C' , 0xff, 0xff, 0xff, 0xff }; register_header_check(0x30, ysfc100_header, sizeof(ysfc100_header), &header_check_ysfc100, file_stat); } #endif