vgmstream/src/meta/acx.c

44 lines
1.3 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;
off_t subfile_offset;
size_t subfile_size;
int total_subsongs, target_subsong = sf->stream_index;
/* checks */
if (!check_extensions(sf,"acx"))
goto fail;
if (read_u32be(0x00,sf) != 0x00000000)
goto fail;
/* simple container for sfx and rarely music [Burning Rangers (SAT)],
* mainly used until .csb was introduced */
total_subsongs = read_u32be(0x04,sf);
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);
temp_sf = setup_subfile_streamfile(sf, subfile_offset, subfile_size, "adx");
if (!temp_sf) goto fail;
vgmstream = init_vgmstream_adx(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;
}