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Merge pull request #2 from soneek/master

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Update RedSpark for M&L Dream Team
This commit is contained in:
Chris Moeller 2014-05-26 00:04:43 -07:00
commit 793f236cd1
1 changed files with 42 additions and 17 deletions
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59
src/meta/redspark.c
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@ -11,37 +11,53 @@ static uint32_t find_key(uint32_t firstword) {
return firstword ^ expected;
}
/* RSD - RedSpark (MadWorld) */
/* RSD - RedSpark (MadWorld)
RS3D - RedSpark (Mario & Luigi: Dream Team I fi*/
VGMSTREAM * init_vgmstream_RedSpark(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
off_t start_offset;
int loop_flag;
int channel_count;
int dt_flag = 0;
uint32_t key;
enum {encsize = 0x1000};
uint8_t buf[encsize];
int32_t(*get_32bit)(uint8_t *p) = NULL;
int16_t(*get_16bit)(uint8_t *p) = NULL;
get_16bit = get_16bitBE;
get_32bit = get_32bitBE;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("rsd",filename_extension(filename))) goto fail;
if (strcasecmp("rsd", filename_extension(filename))) goto fail;
/* decrypt into buffer */
{
uint32_t data;
int i;
if (read_streamfile(buf,0,encsize,streamFile)!=encsize) goto fail;
if (memcmp(&buf[0], "RedSpark", 8)) { //Check to see if already decrypted
key = find_key(get_32bitBE(&buf[0]));
data = get_32bitBE(&buf[0]) ^ key;
put_32bitBE(&buf[0], data);
key = rotlwi(key, 11);
key = find_key(get_32bitBE(&buf[0]));
data = get_32bitBE(&buf[0]) ^ key;
put_32bitBE(&buf[0], data);
key = rotlwi(key,11);
for (i = 4; i < encsize; i += 4) {
key = rotlwi(key, 3) + key;
data = get_32bitBE(&buf[i]) ^ key;
put_32bitBE(&buf[i], data);
}
}
else {
get_16bit = get_16bitLE;
get_32bit = get_32bitLE;
dt_flag = 1;
for (i=4; i < encsize; i+=4) {
key = rotlwi(key,3) + key;
data = get_32bitBE(&buf[i]) ^ key;
put_32bitBE(&buf[i], data);
}
for (i = 4; i < encsize; i += 4) {
data = get_32bitBE(&buf[i]);
put_32bitBE(&buf[i], data);
}
}
}
/* check header */
@ -61,14 +77,23 @@ VGMSTREAM * init_vgmstream_RedSpark(STREAMFILE *streamFile) {
/* fill in the vital statistics */
start_offset = 0x1000;
vgmstream->channels = channel_count;
vgmstream->sample_rate = get_32bitBE(&buf[0x3c]);
vgmstream->sample_rate = get_32bit(&buf[0x3c]);
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->num_samples = get_32bitBE(&buf[0x40])*14;
if (dt_flag)
vgmstream->num_samples = get_32bit(&buf[0x40]);
else
vgmstream->num_samples = get_32bit(&buf[0x40])*14;
if (loop_flag) {
off_t start = 0x54;
start += channel_count*8;
vgmstream->loop_start_sample = get_32bitBE(&buf[start+4])*14;
vgmstream->loop_end_sample = (get_32bitBE(&buf[start+0xc])+1)*14;
if (dt_flag) {
vgmstream->loop_start_sample = get_32bit(&buf[start+4]);
vgmstream->loop_end_sample = (get_32bit(&buf[start+0xc]));
}
else {
vgmstream->loop_start_sample = get_32bit(&buf[start+4])*14;
vgmstream->loop_end_sample = (get_32bit(&buf[start+0xc])+1)*14;
}
if (vgmstream->loop_end_sample > vgmstream->num_samples) {
vgmstream->loop_end_sample = vgmstream->num_samples;
}
@ -95,7 +120,7 @@ VGMSTREAM * init_vgmstream_RedSpark(STREAMFILE *streamFile) {
for (j = 0; j < channel_count; j++) {
for (i=0;i<16;i++) {
vgmstream->ch[j].adpcm_coef[i] =
get_16bitBE(&buf[start+0x2e*j+i*2]);
get_16bit(&buf[start+0x2e*j+i*2]);
}
}
}