mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-21 10:55:53 +01:00
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
#include "meta.h"
|
|
#include "../coding/coding.h"
|
|
|
|
|
|
/* LOPU - French-Bread's Opus [Melty Blood: Type Lumina (Switch)] */
|
|
VGMSTREAM* init_vgmstream_lopu_fb(STREAMFILE* sf) {
|
|
VGMSTREAM* vgmstream = NULL;
|
|
uint32_t start_offset, data_size;
|
|
int loop_flag, channels, sample_rate;
|
|
int32_t num_samples, loop_start, loop_end, skip;
|
|
|
|
/* checks */
|
|
if (!is_id32be(0x00, sf, "LOPU"))
|
|
goto fail;
|
|
|
|
/* .lopus: real extension (honest) */
|
|
if (!check_extensions(sf, "lopus"))
|
|
goto fail;
|
|
|
|
start_offset = read_u32le(0x04, sf);
|
|
sample_rate = read_s32le(0x08, sf);
|
|
channels = read_s16le(0x0c, sf);
|
|
/* 0x10: ? (1984) */
|
|
num_samples = read_s32le(0x14, sf);
|
|
loop_start = read_s32le(0x18, sf);
|
|
loop_end = read_s32le(0x1c, sf) + 1;
|
|
/* 0x20: frame size */
|
|
skip = read_s16le(0x24, sf);
|
|
data_size = read_u32le(0x28, sf);
|
|
/* rest: null */
|
|
|
|
loop_flag = (loop_end > 0); /* -1 if no loop */
|
|
|
|
/* Must remove skip or some files decode past limit. loop_end equals to PC (.ogg) version's max
|
|
* samples, but in some case (stage_park) goes slightly past max but is still valid.
|
|
* (loops shouldn't remove skip as they wouldn't match PC/bgm.txt loop times) */
|
|
num_samples -= skip;
|
|
if (num_samples < loop_end)
|
|
num_samples = loop_end;
|
|
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channels, loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
vgmstream->meta_type = meta_LOPU_FB;
|
|
vgmstream->sample_rate = sample_rate;
|
|
vgmstream->num_samples = num_samples;
|
|
vgmstream->loop_start_sample = loop_start;
|
|
vgmstream->loop_end_sample = loop_end;
|
|
|
|
#ifdef VGM_USE_FFMPEG
|
|
vgmstream->codec_data = init_ffmpeg_switch_opus(sf, start_offset, data_size, vgmstream->channels, skip, vgmstream->sample_rate);
|
|
if (!vgmstream->codec_data) goto fail;
|
|
vgmstream->coding_type = coding_FFmpeg;
|
|
vgmstream->layout_type = layout_none;
|
|
#else
|
|
goto fail;
|
|
#endif
|
|
|
|
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
|
|
goto fail;
|
|
return vgmstream;
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|