Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Add support for scramble to put a 4 character string indicating binary type and the 4 character model id at the end of the mi4 header.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12760 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Barry Wardell 2007-03-14 13:51:05 +00:00
parent 9d264806e8
commit 12df774d9f
3 changed files with 49 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
tools/mi4.c
View file

@ -102,7 +102,8 @@ static void int2le(unsigned int val, unsigned char* addr)
addr[3] = (val >> 24) & 0xff;
}
int mi4_encode(char *iname, char *oname, int version, int magic)
int mi4_encode(char *iname, char *oname, int version, int magic,
char *model, char *type)
{
size_t len;
int length;
@ -150,7 +151,10 @@ int mi4_encode(char *iname, char *oname, int version, int magic)
int2le(length+4, &outbuf[0x2e8]); /* length plus 0xaa55aa55 */
int2le(0xaa55aa55, &outbuf[0x200+length]); /* More Magic */
strncpy((char *)outbuf+0x1f8, type, 4); /* type of binary - RBBL, RBOS, ... */
strncpy((char *)outbuf+0x1fc, model, 4); /* type of binary - RBBL, RBOS, ... */
/* Calculate CRC32 checksum */
chksum_crc32gentab ();
crc = chksum_crc32 (outbuf+28,mi4length-28);

3
tools/mi4.h
View file

@ -23,6 +23,7 @@
#define MI4_MAGIC_DEFAULT 0xec
#define MI4_MAGIC_R 0xfc
int mi4_encode(char *iname, char *oname, int version, int magic);
int mi4_encode(char *iname, char *oname, int version, int magic,
char *model, char *type);
#endif

53
tools/scramble.c
View file

@ -89,6 +89,10 @@ void usage(void)
"\t-mi4v2 PortalPlayer .mi4 format (revision 010201)\n"
"\t-mi4v3 PortalPlayer .mi4 format (revision 010301)\n"
"\t-mi4r Sandisk Rhapsody .mi4 format\n"
"\t All mi4 options take two optional arguments:\n"
"\t -model=XXXX where XXXX is the model id string\n"
"\t -type=XXXX where XXXX is a string indicating the \n"
"\t type of binary, eg. RBOS, RBBL\n"
"\t-add=X Rockbox generic \"add-up\" checksum format\n"
"\t (X values: h100, h120, h140, h300, ipco, nano, ipvd, mn2g\n"
"\t ip3g, ip4g, mini, iax5, h10, h10_5gb, tpj2, e200)\n"
@ -266,20 +270,45 @@ int main (int argc, char** argv)
oname = argv[3];
return ipod_encode(iname, oname, 3, true); /* Firmware image v3 */
}
else if(!strcmp(argv[1], "-mi4v2")) {
else if(!strncmp(argv[1], "-mi4", 4)) {
int mi4magic;
int version;
char model[4] = "";
char type[4] = "";
if(!strcmp(&argv[1][4], "v2")) {
mi4magic = MI4_MAGIC_DEFAULT;
version = 0x00010201;
}
else if(!strcmp(&argv[1][4], "v3")) {
mi4magic = MI4_MAGIC_DEFAULT;
version = 0x00010301;
}
else if(!strcmp(&argv[1][4], "r")) {
mi4magic = MI4_MAGIC_R;
version = 0x00010301;
}
else {
printf( "Invalid mi4 version: %s\n", &argv[1][4]);
return -1;
}
iname = argv[2];
oname = argv[3];
return mi4_encode(iname, oname, 0x00010201, MI4_MAGIC_DEFAULT);
}
else if(!strcmp(argv[1], "-mi4v3")) {
iname = argv[2];
oname = argv[3];
return mi4_encode(iname, oname, 0x00010301, MI4_MAGIC_DEFAULT);
}
else if(!strcmp(argv[1], "-mi4r")) {
iname = argv[2];
oname = argv[3];
return mi4_encode(iname, oname, 0x00010301, MI4_MAGIC_R);
if(!strncmp(argv[2], "-model=", 7)) {
iname = argv[3];
oname = argv[4];
strncpy(model, &argv[2][7], 4);
if(!strncmp(argv[3], "-type=", 6)) {
iname = argv[4];
oname = argv[5];
strncpy(type, &argv[3][6], 4);
}
}
return mi4_encode(iname, oname, version, mi4magic, model, type);
}
/* open file */