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Add .rpgmvo Ogg [RPG Maker MV games]

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This commit is contained in:
bnnm 2018-04-07 19:04:06 +02:00
parent bf4898a770
commit 27087edea2
3 changed files with 44 additions and 0 deletions
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1
src/formats.c
View File

@ -989,6 +989,7 @@ static const meta_info meta_info_list[] = {
{meta_DSP_MCADPCM, "Bethesda .mcadpcm header"},
{meta_UBI_LYN, "Ubisoft LyN RIFF header"},
{meta_MSB_MSH, "Sony MSB+MSH header"},
{meta_OGG_RPGMV, "Ogg Vorbis (RPGMV header)"},
#ifdef VGM_USE_FFMPEG
{meta_FFmpeg, "FFmpeg supported file format"},

40
src/meta/ogg_vorbis.c
View File

@ -176,6 +176,29 @@ static void l2sd_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, v
}
}
static void rpgmvo_ogg_decryption_callback(void *ptr, size_t size, size_t nmemb, void *datasource) {
static const uint8_t header[16] = { /* OggS, packet type, granule, stream id(empty) */
0x4F,0x67,0x67,0x53,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};
size_t bytes_read = size*nmemb;
ogg_vorbis_streamfile * const ov_streamfile = datasource;
int i;
/* first 0x10 are xor'd with a key, but the header can be easily reconstructed
* (key is also in (game)/www/data/System.json "encryptionKey") */
for (i = 0; i < bytes_read; i++) {
if (ov_streamfile->offset+i < 0x10) {
((uint8_t*)ptr)[i] = header[(ov_streamfile->offset + i) % 16];
/* last two bytes are the stream id, get from next OggS */
if (ov_streamfile->offset+i == 0x0e)
((uint8_t*)ptr)[i] = read_8bit(0x58, ov_streamfile->streamfile);
if (ov_streamfile->offset+i == 0x0f)
((uint8_t*)ptr)[i] = read_8bit(0x59, ov_streamfile->streamfile);
}
}
}
/* Ogg Vorbis, by way of libvorbisfile; may contain loop comments */
VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
@ -189,6 +212,7 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
int is_sngw = 0;
int is_isd = 0;
int is_l2sd = 0;
int is_rpgmvo = 0;
/* check extension */
@ -206,6 +230,8 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
is_sngw = 1;
} else if (check_extensions(streamFile,"isd")) { /* .isd: Azure Striker Gunvolt (PC) */
is_isd = 1;
} else if (check_extensions(streamFile,"rpgmvo")) { /* .rpgmvo: RPG Maker MV games (PC) */
is_rpgmvo = 1;
} else {
goto fail;
}
@ -267,6 +293,18 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
// 0x0c(2): PCM block size, 0x0e(2): PCM bps, 0x10: null, 0x18: samples (in PCM bytes)
}
/* check RPGMKVO (RPG Maker MV), header + minor encryption */
if (is_rpgmvo) {
if (read_32bitBE(0x00,streamFile) != 0x5250474D && /* "RPGM" */
read_32bitBE(0x00,streamFile) != 0x56000000) { /* "V\0\0\0" */
goto fail;
}
ovmi.decryption_callback = rpgmvo_ogg_decryption_callback;
start_offset = 0x10;
}
if (is_um3) {
ovmi.meta_type = meta_OGG_UM3;
@ -280,6 +318,8 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
ovmi.meta_type = meta_OGG_ISD;
} else if (is_l2sd) {
ovmi.meta_type = meta_OGG_L2SD;
} else if (is_rpgmvo) {
ovmi.meta_type = meta_OGG_RPGMV;
} else {
ovmi.meta_type = meta_OGG_VORBIS;
}

3
src/vgmstream.h
View File

@ -666,6 +666,7 @@ typedef enum {
meta_DSP_MCADPCM, /* Skyrim (Switch) */
meta_UBI_LYN, /* Ubisoft LyN engine [The Adventures of Tintin (multi)] */
meta_MSB_MSH, /* sfx companion of MIH+MIB */
meta_OGG_RPGMV, /* Ogg Vorbis with encryption [RPG Maker MV games (PC)] */
#ifdef VGM_USE_FFMPEG
meta_FFmpeg,
@ -884,6 +885,8 @@ typedef struct {
off_t block_offset;
size_t block_size;
int prev_block_samples; /* count for optimization */
} vorbis_custom_codec_data;
#endif