Cool_Tools/vgmstream
1
0
Fork 0
mirror of https://github.com/vgmstream/vgmstream.git synced 2025-02-20 20:41:08 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add NX Opus internal looping [Famicom Detective Club (Switch)]

Browse Source
This commit is contained in:
bnnm 2021-04-29 23:57:49 +02:00
parent 377935a76c
commit 2f3870c659
1 changed files with 28 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
src/meta/opus.c
View File

@ -9,31 +9,54 @@ static VGMSTREAM* init_vgmstream_opus(STREAMFILE* sf, meta_t meta_type, off_t of
VGMSTREAM* vgmstream = NULL;
off_t start_offset;
int loop_flag = 0, channel_count;
off_t data_offset, multichannel_offset = 0;
off_t data_offset, samples_offset, multichannel_offset = 0;
size_t data_size, skip = 0;
/* header chunk */
if (read_u32le(offset + 0x00,sf) != 0x80000001)
goto fail;
/* 0x04: chunk size */
/* 0x08: null */
channel_count = read_u8(offset + 0x09, sf);
/* 0x0a: packet size if CBR, 0 if VBR */
data_offset = offset + read_u32le(offset + 0x10, sf);
data_offset = read_u32le(offset + 0x10, sf);
/* 0x14: null/reserved? */
samples_offset = read_u32le(offset + 0x18, sf);
skip = read_u16le(offset + 0x1c, sf);
/* 0x1e: ? (seen in Lego Movie 2 (Switch)) */
/* recent >2ch info [Clannad (Switch)] */
/* samples chunk, rare [Famicom Detective Club (Switch)] */
if (samples_offset && read_u32le(offset + samples_offset, sf) == 0x80000003) {
/* maybe should give priority to external info? */
samples_offset += offset;
/* 0x08: null*/
loop_flag = read_u8 (samples_offset + 0x09, sf);
num_samples = read_s32le(samples_offset + 0x0c, sf); /* slightly smaller than manual count */
loop_start = read_s32le(samples_offset + 0x10, sf);
loop_end = read_s32le(samples_offset + 0x14, sf);
/* rest (~0x38) reserved/alignment? */
/* values seem to take encoder delay into account */
}
else {
loop_flag = (loop_end > 0); /* -1 when not set */
}
/* multichannel chunk, rare [Clannad (Switch)] */
if (read_u32le(offset + 0x20, sf) == 0x80000005) {
multichannel_offset = offset + 0x20;
}
/* data chunk */
data_offset += offset;
if (read_u32le(data_offset, sf) != 0x80000004)
goto fail;
data_size = read_u32le(data_offset + 0x04, sf);
start_offset = data_offset + 0x08;
loop_flag = (loop_end > 0); /* -1 when not set */
/* build the VGMSTREAM */