diff options
author | Björn Stenberg <bjorn@haxx.se> | 2004-01-08 21:34:52 +0000 |
---|---|---|
committer | Björn Stenberg <bjorn@haxx.se> | 2004-01-08 21:34:52 +0000 |
commit | 123ae83b07b1a9b1fd8938400813117a26087f3a (patch) | |
tree | 17cf339369268434c46a554b4ef3c4a7e8c5c3ac | |
parent | 8463a2bbd3f64ad47f5d30ca9a1957c170f48ec1 (diff) | |
download | rockbox-123ae83b07b1a9b1fd8938400813117a26087f3a.tar.gz rockbox-123ae83b07b1a9b1fd8938400813117a26087f3a.zip |
Added multimedia support (but no compression)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4213 a1c6a512-1295-4272-9138-f99709370657
-rw-r--r-- | tools/scramble.c | 165 |
1 files changed, 115 insertions, 50 deletions
diff --git a/tools/scramble.c b/tools/scramble.c index 0021bcacaa..8e3f7395a5 100644 --- a/tools/scramble.c +++ b/tools/scramble.c | |||
@@ -20,6 +20,22 @@ | |||
20 | #include <stdio.h> | 20 | #include <stdio.h> |
21 | #include <stdlib.h> | 21 | #include <stdlib.h> |
22 | 22 | ||
23 | void int2le(unsigned int val, unsigned char* addr) | ||
24 | { | ||
25 | addr[0] = val & 0xFF; | ||
26 | addr[1] = (val >> 8) & 0xff; | ||
27 | addr[2] = (val >> 16) & 0xff; | ||
28 | addr[3] = (val >> 24) & 0xff; | ||
29 | } | ||
30 | |||
31 | void int2be(unsigned int val, unsigned char* addr) | ||
32 | { | ||
33 | addr[0] = (val >> 24) & 0xff; | ||
34 | addr[1] = (val >> 16) & 0xff; | ||
35 | addr[2] = (val >> 8) & 0xff; | ||
36 | addr[3] = val & 0xFF; | ||
37 | } | ||
38 | |||
23 | int main (int argc, char** argv) | 39 | int main (int argc, char** argv) |
24 | { | 40 | { |
25 | unsigned long length,i,slen; | 41 | unsigned long length,i,slen; |
@@ -28,13 +44,20 @@ int main (int argc, char** argv) | |||
28 | unsigned char header[24]; | 44 | unsigned char header[24]; |
29 | unsigned char *iname = argv[1]; | 45 | unsigned char *iname = argv[1]; |
30 | unsigned char *oname = argv[2]; | 46 | unsigned char *oname = argv[2]; |
47 | unsigned char *xorstring; | ||
31 | int headerlen = 6; | 48 | int headerlen = 6; |
32 | FILE* file; | 49 | FILE* file; |
33 | int version; | 50 | int version; |
34 | int scramble=1; | 51 | enum { none, scramble, xor } method = scramble; |
35 | 52 | ||
36 | if (argc < 3) { | 53 | if (argc < 3) { |
37 | printf("usage: %s [-fm] [-v2] [-neo]<input file> <output file>\n",argv[0]); | 54 | printf("usage: %s [options] <input file> <output file> [xor string]\n",argv[0]); |
55 | printf("options:\n"); | ||
56 | printf("\t-fm Archos FM recorder format\n"); | ||
57 | printf("\t-v2 Archos V2 recorder format\n"); | ||
58 | printf("\t-neo SSI Neo format\n"); | ||
59 | printf("\t-mm=X Archos Multimedia format (X values: A=JBMM, B=AV1xx, C=AV3xx)\n"); | ||
60 | printf("\nNo option results in Archos standard player/recorder format.\n"); | ||
38 | return -1; | 61 | return -1; |
39 | } | 62 | } |
40 | 63 | ||
@@ -56,10 +79,22 @@ int main (int argc, char** argv) | |||
56 | headerlen = 17; | 79 | headerlen = 17; |
57 | iname = argv[2]; | 80 | iname = argv[2]; |
58 | oname = argv[3]; | 81 | oname = argv[3]; |
59 | scramble = 0; | 82 | method = none; |
83 | } | ||
84 | else if(!strncmp(argv[1], "-mm=", 4)) { | ||
85 | headerlen = 16; | ||
86 | iname = argv[2]; | ||
87 | oname = argv[3]; | ||
88 | method = xor; | ||
89 | version = argv[1][4]; | ||
90 | if (argc > 4) | ||
91 | xorstring = argv[4]; | ||
92 | else { | ||
93 | printf("Multimedia needs an xor string\n"); | ||
94 | return -1; | ||
95 | } | ||
60 | } | 96 | } |
61 | 97 | ||
62 | |||
63 | /* open file */ | 98 | /* open file */ |
64 | file = fopen(iname,"rb"); | 99 | file = fopen(iname,"rb"); |
65 | if (!file) { | 100 | if (!file) { |
@@ -70,7 +105,7 @@ int main (int argc, char** argv) | |||
70 | length = ftell(file); | 105 | length = ftell(file); |
71 | length = (length + 3) & ~3; /* Round up to nearest 4 byte boundary */ | 106 | length = (length + 3) & ~3; /* Round up to nearest 4 byte boundary */ |
72 | 107 | ||
73 | if ((length + headerlen) >= 0x32000) { | 108 | if ((method == scramble) && ((length + headerlen) >= 0x32000)) { |
74 | printf("error: max firmware size is 200KB!\n"); | 109 | printf("error: max firmware size is 200KB!\n"); |
75 | fclose(file); | 110 | fclose(file); |
76 | return -1; | 111 | return -1; |
@@ -78,7 +113,10 @@ int main (int argc, char** argv) | |||
78 | 113 | ||
79 | fseek(file,0,SEEK_SET); | 114 | fseek(file,0,SEEK_SET); |
80 | inbuf = malloc(length); | 115 | inbuf = malloc(length); |
81 | outbuf = malloc(length); | 116 | if (method == xor) |
117 | outbuf = malloc(length*2); | ||
118 | else | ||
119 | outbuf = malloc(length); | ||
82 | if ( !inbuf || !outbuf ) { | 120 | if ( !inbuf || !outbuf ) { |
83 | printf("out of memory!\n"); | 121 | printf("out of memory!\n"); |
84 | return -1; | 122 | return -1; |
@@ -92,15 +130,27 @@ int main (int argc, char** argv) | |||
92 | } | 130 | } |
93 | fclose(file); | 131 | fclose(file); |
94 | 132 | ||
95 | if(scramble) { | 133 | switch (method) |
96 | /* scramble */ | 134 | { |
97 | slen = length/4; | 135 | case scramble: |
98 | for (i = 0; i < length; i++) { | 136 | slen = length/4; |
99 | unsigned long addr = (i >> 2) + ((i % 4) * slen); | 137 | for (i = 0; i < length; i++) { |
100 | unsigned char data = inbuf[i]; | 138 | unsigned long addr = (i >> 2) + ((i % 4) * slen); |
101 | data = ~((data << 1) | ((data >> 7) & 1)); /* poor man's ROL */ | 139 | unsigned char data = inbuf[i]; |
102 | outbuf[addr] = data; | 140 | data = ~((data << 1) | ((data >> 7) & 1)); /* poor man's ROL */ |
103 | } | 141 | outbuf[addr] = data; |
142 | } | ||
143 | break; | ||
144 | |||
145 | case xor: | ||
146 | /* "compress" */ | ||
147 | slen = 0; | ||
148 | for (i=0; i<length; i++) { | ||
149 | if (!(i&7)) | ||
150 | outbuf[slen++] = 0xff; /* all data is uncompressed */ | ||
151 | outbuf[slen++] = inbuf[i]; | ||
152 | } | ||
153 | break; | ||
104 | } | 154 | } |
105 | 155 | ||
106 | /* calculate checksum */ | 156 | /* calculate checksum */ |
@@ -108,47 +158,62 @@ int main (int argc, char** argv) | |||
108 | crc += inbuf[i]; | 158 | crc += inbuf[i]; |
109 | 159 | ||
110 | memset(header, 0, sizeof header); | 160 | memset(header, 0, sizeof header); |
111 | if(scramble) { | 161 | switch (method) |
112 | if (headerlen == 6) { | 162 | { |
113 | header[0] = (length >> 24) & 0xff; | 163 | case scramble: |
114 | header[1] = (length >> 16) & 0xff; | 164 | if (headerlen == 6) { |
115 | header[2] = (length >> 8) & 0xff; | 165 | int2be(length, header); |
116 | header[3] = length & 0xff; | 166 | header[4] = (crc >> 8) & 0xff; |
117 | header[4] = (crc >> 8) & 0xff; | 167 | header[5] = crc & 0xff; |
118 | header[5] = crc & 0xff; | 168 | } |
119 | } | 169 | else { |
120 | else { | 170 | header[0] = |
121 | header[0] = | 171 | header[1] = |
122 | header[1] = | 172 | header[2] = |
123 | header[2] = | 173 | header[3] = 0xff; /* ??? */ |
124 | header[3] = 0xff; /* ??? */ | 174 | |
125 | 175 | header[6] = (crc >> 8) & 0xff; | |
126 | header[6] = (crc >> 8) & 0xff; | 176 | header[7] = crc & 0xff; |
127 | header[7] = crc & 0xff; | 177 | |
178 | header[11] = version; | ||
179 | |||
180 | header[15] = headerlen; /* really? */ | ||
181 | |||
182 | int2be(length, &header[20]); | ||
183 | } | ||
184 | break; | ||
128 | 185 | ||
129 | header[11] = version; | 186 | case xor: |
187 | { | ||
188 | int xorlen = strlen(xorstring); | ||
130 | 189 | ||
131 | header[15] = headerlen; /* really? */ | 190 | /* calculate checksum */ |
191 | for (i=0; i<slen; i++) | ||
192 | crc += outbuf[i]; | ||
132 | 193 | ||
133 | header[20] = (length >> 24) & 0xff; | 194 | /* xor data */ |
134 | header[21] = (length >> 16) & 0xff; | 195 | for (i=0; i<slen; i++) |
135 | header[22] = (length >> 8) & 0xff; | 196 | outbuf[i] ^= xorstring[i & (xorlen-1)]; |
136 | header[23] = length & 0xff; | 197 | |
198 | header[0] = header[2] = 'Z'; | ||
199 | header[1] = header[3] = version; | ||
200 | int2le(length, &header[4]); | ||
201 | int2le(slen, &header[8]); | ||
202 | int2le(crc, &header[12]); | ||
203 | length = slen; | ||
204 | break; | ||
137 | } | 205 | } |
138 | } | 206 | |
139 | else { | ||
140 | #define MY_FIRMWARE_TYPE "Rockbox" | 207 | #define MY_FIRMWARE_TYPE "Rockbox" |
141 | #define MY_HEADER_VERSION 1 | 208 | #define MY_HEADER_VERSION 1 |
142 | 209 | default: | |
143 | strncpy(header,MY_FIRMWARE_TYPE,9); | 210 | strncpy(header,MY_FIRMWARE_TYPE,9); |
144 | header[9]='\0'; /*shouldn't have to, but to be SURE */ | 211 | header[9]='\0'; /*shouldn't have to, but to be SURE */ |
145 | header[10]=MY_HEADER_VERSION&0xFF; | 212 | header[10]=MY_HEADER_VERSION&0xFF; |
146 | header[11]=(crc>>8)&0xFF; | 213 | header[11]=(crc>>8)&0xFF; |
147 | header[12]=crc&0xFF; | 214 | header[12]=crc&0xFF; |
148 | header[13]=(sizeof(header)>>24)&0xFF; | 215 | int2be(sizeof(header), &header[12]); |
149 | header[14]=(sizeof(header)>>16)&0xFF; | 216 | break; |
150 | header[15]=(sizeof(header)>>8)&0xFF; | ||
151 | header[16]=sizeof(header)&0xFF; | ||
152 | } | 217 | } |
153 | 218 | ||
154 | /* write file */ | 219 | /* write file */ |