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Workaround for some FSB5 .bank [Guacamelee 2 (Switch)]

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bnnm 2020-05-24 00:16:10 +02:00
parent 907016fead
commit 66d3e14fe5
1 changed files with 24 additions and 4 deletions
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28
src/meta/fsb5_fev.c
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@ -28,17 +28,37 @@ VGMSTREAM* init_vgmstream_fsb5_fev_bank(STREAMFILE* sf) {
read_32bitBE(chunk_offset+0x04,sf) != 0x424E4B49) /* "BNKI" */
goto fail; /* event .fev has "OBCT" instead of "BNKI" */
/* inside BNKI is a bunch of LIST each with event subchunks and finally the fsb offset */
/* inside BNKI is a bunch of LIST each with event subchunks and finally fsb offset */
first_offset = chunk_offset + 0x04;
if (!find_chunk_le(sf, 0x534E4448,first_offset,0, &chunk_offset,&chunk_size)) /* "SNDH" */
goto fail;
if (chunk_size != 0x0c)
goto fail; /* assuming only one FSB5 is possible */
/* 0x00: unknown (version? ex LE: 0x00080003, 0x00080005) */
{
int banks;
/* multiple banks is possible but rare (only seen an extra "Silence" FSB5 in Guacamelee 2 (Switch),
* which on PC is a regular subsong in the only FSB5) */
banks = (chunk_size - 0x04) / 0x08;
VGM_ASSERT(banks > 1, "FSB5FEV: multiple banks found\n");
/* Could try to set stream index based on FSB subsong ranges, also fixing num_streams and stream_index
* kinda involved and hard to test so for now just ignore it and use first offset */
if (banks > 2)
goto fail;
if (banks == 2) {
off_t temp_offset = read_32bitLE(chunk_offset + 0x04 + 0x08*1 + 0x00,sf);
//size_t temp_size = read_32bitLE(chunk_offset + 0x04 + 0x08*1 + 0x04,sf);
int bank_subsongs = read_32bitLE(temp_offset + 0x08,sf);
if (bank_subsongs != 1) goto fail;
}
}
subfile_offset = read_32bitLE(chunk_offset+0x04,sf);
subfile_size = read_32bitLE(chunk_offset+0x08,sf);
temp_sf = setup_subfile_streamfile(sf, subfile_offset,subfile_size, "fsb");
if (!temp_sf) goto fail;