vgmstream/src/meta/acx.c
2024-03-31 16:09:50 +02:00

62 lines
1.8 KiB
C

#include "meta.h"
#include "../coding/coding.h"
/* .acx - CRI container [Baroque (SAT), Persona 3 (PS2), THE iDOLM@STER: Live For You (X360)] */
VGMSTREAM* init_vgmstream_acx(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
STREAMFILE* temp_sf = NULL;
uint32_t subfile_offset, subfile_size, subfile_id;
int total_subsongs, target_subsong = sf->stream_index;
/* checks */
if (read_u32be(0x00,sf) != 0x00000000)
return NULL;
/* simple container for sfx and rarely music [Burning Rangers (SAT)],
* mainly used until .csb was introduced */
total_subsongs = read_u32be(0x04,sf);
if (total_subsongs > 256 || total_subsongs == 0) /* arbitrary max */
return NULL;
if (!check_extensions(sf,"acx"))
return NULL;
init_vgmstream_t init_vgmstream = NULL;
const char* fake_ext = NULL;
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
subfile_offset = read_u32be(0x08 + (target_subsong-1) * 0x08 + 0x00,sf);
subfile_size = read_u32be(0x08 + (target_subsong-1) * 0x08 + 0x04,sf);
subfile_id = read_u32be(subfile_offset,sf);
if (subfile_id == get_id32be("OggS")) { /* 12Riven (PC) */
init_vgmstream = init_vgmstream_ogg_vorbis;
fake_ext = "ogg";
}
else if ((subfile_id & 0xFFFF0000) == 0x80000000) {
init_vgmstream = init_vgmstream_adx;
fake_ext = "adx";
}
else {
goto fail;
}
temp_sf = setup_subfile_streamfile(sf, subfile_offset, subfile_size, fake_ext);
if (!temp_sf) goto fail;
vgmstream = init_vgmstream(temp_sf);
if (!vgmstream) goto fail;
vgmstream->num_streams = total_subsongs;
close_streamfile(temp_sf);
return vgmstream;
fail:
close_streamfile(temp_sf);
close_vgmstream(vgmstream);
return NULL;
}