vgmstream/src/meta/pos.c

43 lines
1.1 KiB
C

#include "meta.h"
/* .pos - loop points for .wav [Ys I-II Complete (PC)] */
VGMSTREAM* init_vgmstream_pos(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
STREAMFILE* sf_data = NULL;
int32_t loop_start, loop_end;
/* checks */
if (get_streamfile_size(sf) != 0x08)
return NULL;
if (!check_extensions(sf, "pos"))
return NULL;
sf_data = open_streamfile_by_ext(sf, "wav");
if (sf_data) {
vgmstream = init_vgmstream_riff(sf_data);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_RIFF_WAVE_POS;
}
else {
goto fail;
}
close_streamfile(sf_data);
sf_data = NULL;
/* install loops (wrong values are validated later) */
loop_start = read_s32le(0x00, sf);
loop_end = read_s32le(0x04, sf);
if (loop_end <= 0 || (loop_end > vgmstream->num_samples)) {
loop_end = vgmstream->num_samples;
}
vgmstream_force_loop(vgmstream, 1, loop_start, loop_end);
return vgmstream;
fail:
close_streamfile(sf_data);
close_vgmstream(vgmstream);
return NULL;
}