mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-22 03:15:54 +01:00
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
|
#include "meta.h"
|
||
|
|
#include "../coding/coding.h"
|
||
|
|
#include "../layout/layout.h"
|
||
|
|
|
||
|
|
|
||
|
|
/* KTSC - Koei Tecmo KTSR container */
|
||
|
|
VGMSTREAM* init_vgmstream_ktsc(STREAMFILE* sf) {
|
||
|
|
VGMSTREAM* vgmstream = NULL;
|
||
|
|
STREAMFILE *temp_sf = NULL;
|
||
|
|
int target_subsong = sf->stream_index, total_subsongs;
|
||
|
|
off_t offset, subfile_offset;
|
||
|
|
size_t subfile_size;
|
||
|
|
|
||
|
|
|
||
|
|
/* checks */
|
||
|
|
/* .ktsl2asbin: common [Atelier Ryza (PC)] */
|
||
|
|
if (!check_extensions(sf, "ktsl2asbin"))
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
/* KTSC is a container of KTSRs, but can't be extracted easily as they use absolute pointers to the
|
||
|
|
* same stream companion file. KTSRs may have subsongs, but only seem to have 1, so use KTSC's subsongs. */
|
||
|
|
if (read_u32be(0x00, sf) != 0x4B545343) /* "KTSC" */
|
||
|
|
goto fail;
|
||
|
|
if (read_u32be(0x04, sf) != 0x01000001) /* version? */
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
if (target_subsong == 0) target_subsong = 1;
|
||
|
|
total_subsongs = read_u32le(0x08, sf);
|
||
|
|
if (target_subsong > total_subsongs)
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
/* 0x0c: CRC(?) table start */
|
||
|
|
offset = read_u32le(0x10, sf);
|
||
|
|
/* 0x14: file size */
|
||
|
|
/* 0x18: header end */
|
||
|
|
/* 0x1c: null */
|
||
|
|
/* 0x20+: CRC(?) table, 1 entry per file */
|
||
|
|
|
||
|
|
subfile_offset = read_u32le(offset + 0x04 * (target_subsong - 1), sf);
|
||
|
|
subfile_size = read_u32le(subfile_offset + 0x1c, sf); /* from header, meh */
|
||
|
|
|
||
|
|
temp_sf = setup_subfile_streamfile(sf, subfile_offset, subfile_size, NULL);
|
||
|
|
if (!temp_sf) goto fail;
|
||
|
|
|
||
|
|
temp_sf->stream_index = 1;
|
||
|
|
vgmstream = init_vgmstream_ktsr(temp_sf);
|
||
|
|
if (!vgmstream) goto fail;
|
||
|
|
|
||
|
|
if (vgmstream->num_streams > 1)
|
||
|
|
goto fail;
|
||
|
|
vgmstream->num_streams = total_subsongs;
|
||
|
|
|
||
|
|
close_streamfile(temp_sf);
|
||
|
|
return vgmstream;
|
||
|
|
|
||
|
|
fail:
|
||
|
|
close_streamfile(temp_sf);
|
||
|
|
close_vgmstream(vgmstream);
|
||
|
|
return NULL;
|
||
|
|
}
|