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Add .mus Ogg [Redux - Dark Matters (PC)]

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This commit is contained in:
bnnm 2018-06-30 13:43:12 +02:00
parent 57f8c1922e
commit dbb5a4458b
3 changed files with 33 additions and 1 deletions
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1
src/formats.c
View File

@ -1025,6 +1025,7 @@ static const meta_info meta_info_list[] = {
{meta_OGG_GWM, "Ogg Vorbis (GWM header)"},
{meta_DSP_SADF, "Procyon Studio SADF header"},
{meta_H4M, "Hudson HVQM4 header"},
{meta_OGG_MUS, "Ogg Vorbis (MUS header)"},
#ifdef VGM_USE_FFMPEG
{meta_FFmpeg, "FFmpeg supported file format"},

32
src/meta/ogg_vorbis.c
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@ -226,6 +226,28 @@ static void gwm_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, vo
}
}
static void mus_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, void *datasource) {
static const uint8_t key[16] = {
0x21,0x4D,0x6F,0x01,0x20,0x4C,0x6E,0x02,0x1F,0x4B,0x6D,0x03,0x20,0x4C,0x6E,0x02
};
size_t bytes_read = size*nmemb;
ogg_vorbis_streamfile * const ov_streamfile = datasource;
int i;
char *header_id = "OggS";
/* bytes are xor'd with key, first "OggS" is changed */
for (i = 0; i < bytes_read; i++) {
if (ov_streamfile->offset+i < 0x04) { /* if decrypted gives "Mus " */
((uint8_t*)ptr)[i] = (uint8_t)header_id[(ov_streamfile->offset + i) % 4];
}
else {
((uint8_t*)ptr)[i] ^= key[(ov_streamfile->offset + i) % sizeof(key)];
}
}
}
/* Ogg Vorbis, by way of libvorbisfile; may contain loop comments */
VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
ogg_vorbis_meta_info_t ovmi = {0};
@ -239,6 +261,7 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
int is_rpgmvo = 0;
int is_eno = 0;
int is_gwm = 0;
int is_mus = 0;
/* check extension */
@ -262,6 +285,8 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
is_eno = 1;
} else if (check_extensions(streamFile,"gwm")) { /* .gwm: Adagio: Cloudburst (PC) */
is_gwm = 1;
} else if (check_extensions(streamFile,"mus")) { /* .mus: Redux - Dark Matters (PC) */
is_mus = 1;
} else {
goto fail;
}
@ -355,7 +380,6 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
start_offset = 0x01;
}
/* check GWM [Adagio: Cloudburst (PC)], encrypted */
if (is_gwm) {
ovmi.xor_value = 0x5D;
@ -363,6 +387,12 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
ovmi.meta_type = meta_OGG_GWM;
}
/* check .mus [Redux - Dark Matters (PC)], encrypted */
if (is_mus) {
ovmi.decryption_callback = mus_ogg_decryption_callback;
ovmi.meta_type = meta_OGG_MUS;
}
return init_vgmstream_ogg_vorbis_callbacks(streamFile, NULL, start_offset, &ovmi);

1
src/vgmstream.h
View File

@ -679,6 +679,7 @@ typedef enum {
meta_TA_AAC_VITA, /* tri-Ace AAC (Judas Code) */
meta_OGG_GWM, /* Ogg Vorbis with encryption [Metronomicon (PC)] */
meta_H4M, /* Hudson HVQM4 video [Resident Evil 0 (GC), Tales of Symphonia (GC)] */
meta_OGG_MUS, /* Ogg Vorbis with encryption [Redux - Dark Matters (PC)] */
#ifdef VGM_USE_FFMPEG
meta_FFmpeg,