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vgmstream/src/meta/opus.c

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#include "meta.h"
#include "../coding/coding.h"
#include "../layout/layout.h"
#include "opus_interleave_streamfile.h"
/* Nintendo OPUS - from Switch games, including header variations (not the same as Ogg Opus) */
static VGMSTREAM * init_vgmstream_opus(STREAMFILE *streamFile, meta_t meta_type, off_t offset, int32_t num_samples, int32_t loop_start, int32_t loop_end) {
VGMSTREAM * vgmstream = NULL;
off_t start_offset;
int loop_flag = 0, channel_count;
off_t data_offset;
size_t data_size, skip = 0;
if ((uint32_t)read_32bitLE(offset + 0x00,streamFile) != 0x80000001)
goto fail;
channel_count = read_8bit(offset + 0x09, streamFile);
/* 0x0a: packet size if CBR, 0 if VBR */
data_offset = offset + read_32bitLE(offset + 0x10, streamFile);
skip = read_16bitLE(offset + 0x1c, streamFile);
/* 0x1e: ? (seen in Lego Movie 2 (Switch)) */
if ((uint32_t)read_32bitLE(data_offset, streamFile) != 0x80000004)
goto fail;
data_size = read_32bitLE(data_offset + 0x04, streamFile);
start_offset = data_offset + 0x08;
loop_flag = (loop_end > 0); /* -1 when not set */
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_type;
vgmstream->sample_rate = read_32bitLE(offset + 0x0c,streamFile);
vgmstream->num_samples = num_samples;
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end;
vgmstream->stream_size = data_size; /* to avoid inflated sizes from fake OggS IO */
#ifdef VGM_USE_FFMPEG
{
vgmstream->codec_data = init_ffmpeg_switch_opus(streamFile, 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;
if (vgmstream->num_samples == 0) {
vgmstream->num_samples = switch_opus_get_samples(start_offset, data_size, streamFile) - skip;
}
}
#else
goto fail;
#endif
if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
/* standard Switch Opus, Nintendo header + raw data (generated by opus_test.c?) [Lego City Undercover (Switch)] */
VGMSTREAM * init_vgmstream_opus_std(STREAMFILE *streamFile) {
STREAMFILE * PSIFile = NULL;
off_t offset;
int num_samples, loop_start, loop_end;
/* checks */
if (!check_extensions(streamFile,"opus,lopus"))
goto fail;
offset = 0x00;
/* BlazBlue: Cross Tag Battle (Switch) PSI Metadata for corresponding Opus */
/* Maybe future Arc System Works games will use this too? */
PSIFile = open_streamfile_by_ext(streamFile, "psi");
if (PSIFile) {
num_samples = read_32bitLE(0x8C, PSIFile);
loop_start = read_32bitLE(0x84, PSIFile);
loop_end = read_32bitLE(0x88, PSIFile);
close_streamfile(PSIFile);
}
else {
num_samples = 0;
loop_start = 0;
loop_end = 0;
}
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples,loop_start,loop_end);
fail:
return NULL;
}
/* Nippon1 variation [Disgaea 5 (Switch)] */
VGMSTREAM * init_vgmstream_opus_n1(STREAMFILE *streamFile) {
off_t offset;
int num_samples, loop_start, loop_end;
/* checks */
if ( !check_extensions(streamFile,"opus,lopus"))
goto fail;
if (!((read_32bitBE(0x04,streamFile) == 0x00000000 && read_32bitBE(0x0c,streamFile) == 0x00000000) ||
(read_32bitBE(0x04,streamFile) == 0xFFFFFFFF && read_32bitBE(0x0c,streamFile) == 0xFFFFFFFF)))
goto fail;
offset = 0x10;
num_samples = 0;
loop_start = read_32bitLE(0x00,streamFile);
loop_end = read_32bitLE(0x08,streamFile);
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples,loop_start,loop_end);
fail:
return NULL;
}
/* Capcom variation [Ultra Street Fighter II (Switch), Resident Evil: Revelations (Switch)] */
VGMSTREAM * init_vgmstream_opus_capcom(STREAMFILE *streamFile) {
VGMSTREAM *vgmstream = NULL;
off_t offset;
int num_samples, loop_start, loop_end;
int channel_count;
/* checks */
if ( !check_extensions(streamFile,"opus,lopus"))
goto fail;
channel_count = read_32bitLE(0x04,streamFile);
if (channel_count != 1 && channel_count != 2 && channel_count != 6)
goto fail; /* unknown stream layout */
num_samples = read_32bitLE(0x00,streamFile);
/* 0x04: channels, >2 uses interleaved streams (2ch+2ch+2ch) */
loop_start = read_32bitLE(0x08,streamFile);
loop_end = read_32bitLE(0x0c,streamFile);
/* 0x10: frame size (with extra data) */
/* 0x14: extra chunk count */
/* 0x18: null */
offset = read_32bitLE(0x1c,streamFile);
/* 0x20-8: config? (0x0077C102 04000000 E107070C) */
/* 0x2c: some size? */
/* 0x30+: extra chunks (0x00: 0x7f, 0x04: num_sample), alt loop starts/regions? */
if (channel_count == 6) {
/* 2ch multistream hacky-hacks, don't try this at home. We'll end up with:
* main vgmstream > N vgmstream layers > substream IO deinterleaver > opus meta > Opus IO transmogrifier (phew) */
layered_layout_data* data = NULL;
int layers = channel_count / 2;
int i;
int loop_flag = (loop_end > 0);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
vgmstream->layout_type = layout_layered;
/* init layout */
data = init_layout_layered(layers);
if (!data) goto fail;
vgmstream->layout_data = data;
/* open each layer subfile */
for (i = 0; i < layers; i++) {
STREAMFILE* temp_streamFile = setup_opus_interleave_streamfile(streamFile, offset+0x28*i, layers);
if (!temp_streamFile) goto fail;
data->layers[i] = init_vgmstream_opus(temp_streamFile, meta_OPUS, 0x00, num_samples,loop_start,loop_end);
close_streamfile(temp_streamFile);
if (!data->layers[i]) goto fail;
}
/* setup layered VGMSTREAMs */
if (!setup_layout_layered(data))
goto fail;
vgmstream->sample_rate = data->layers[0]->sample_rate;
vgmstream->num_samples = data->layers[0]->num_samples;
vgmstream->loop_start_sample = data->layers[0]->loop_start_sample;
vgmstream->loop_end_sample = data->layers[0]->loop_end_sample;
vgmstream->meta_type = meta_OPUS;
vgmstream->coding_type = data->layers[0]->coding_type;
return vgmstream;
}
else {
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples,loop_start,loop_end);
}
fail:
close_vgmstream(vgmstream);
return NULL;
}
/* Procyon Studio variation [Xenoblade Chronicles 2 (Switch)] */
VGMSTREAM * init_vgmstream_opus_nop(STREAMFILE *streamFile) {
off_t offset;
int num_samples, loop_start = 0, loop_end = 0, loop_flag;
/* checks */
if (!check_extensions(streamFile,"nop"))
goto fail;
if (read_32bitBE(0x00, streamFile) != 0x73616466 || /* "sadf" */
read_32bitBE(0x08, streamFile) != 0x6f707573) /* "opus" */
goto fail;
offset = read_32bitLE(0x1c, streamFile);
num_samples = read_32bitLE(0x28, streamFile);
loop_flag = read_8bit(0x19, streamFile);
if (loop_flag) {
loop_start = read_32bitLE(0x2c, streamFile);
loop_end = read_32bitLE(0x30, streamFile);
}
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples,loop_start,loop_end);
fail:
return NULL;
}
/* Shin'en variation [Fast RMX (Switch)] */
VGMSTREAM * init_vgmstream_opus_shinen(STREAMFILE *streamFile) {
off_t offset = 0;
int num_samples, loop_start, loop_end;
/* checks */
if ( !check_extensions(streamFile,"opus,lopus"))
goto fail;
if (read_32bitBE(0x08,streamFile) != 0x01000080)
goto fail;
offset = 0x08;
num_samples = 0;
loop_start = read_32bitLE(0x00,streamFile);
loop_end = read_32bitLE(0x04,streamFile); /* 0 if no loop */
if (loop_start > loop_end)
goto fail; /* just in case */
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples,loop_start,loop_end);
fail:
return NULL;
}
/* Bandai Namco Opus (found in NUS3Banks) [Taiko no Tatsujin: Nintendo Switch Version!] */
VGMSTREAM * init_vgmstream_opus_nus3(STREAMFILE *streamFile) {
off_t offset = 0;
int num_samples = 0, loop_start = 0, loop_end = 0, loop_flag;
/* checks */
/* .opus: header ID (they only exist inside .nus3bank) */
if (!check_extensions(streamFile, "opus,lopus"))
goto fail;
if (read_32bitBE(0x00, streamFile) != 0x4F505553) /* "OPUS" */
goto fail;
/* Here's an interesting quirk, OPUS header contains big endian values
while the Nintendo Opus header and data that follows remain little endian as usual */
offset = read_32bitBE(0x20, streamFile);
num_samples = read_32bitBE(0x08, streamFile);
/* Check if there's a loop end value to determine loop_flag*/
loop_flag = read_32bitBE(0x18, streamFile);
if (loop_flag) {
loop_start = read_32bitBE(0x14, streamFile);
loop_end = read_32bitBE(0x18, streamFile);
}
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples, loop_start, loop_end);
fail:
return NULL;
}
/* Nippon Ichi SPS wrapper (non-segmented) [Ys VIII: Lacrimosa of Dana (Switch)] */
VGMSTREAM * init_vgmstream_opus_sps_n1(STREAMFILE *streamFile) {
off_t offset;
int num_samples, loop_start = 0, loop_end = 0, loop_flag;
/* checks */
/* .sps: Labyrinth of Refrain - Coven of Dusk (Switch)
* .nlsd: Disgaea Refine (Switch), Ys VIII (Switch) */
if (!check_extensions(streamFile, "sps,nlsd"))
goto fail;
if (read_32bitBE(0x00, streamFile) != 0x09000000) /* file type (see other N1 SPS) */
goto fail;
offset = 0x1C;
num_samples = read_32bitLE(0x0C, streamFile);
/* sections num_samples (remnant of segmented opus_sps_n1):
* 0x10: intro, 0x14: loop, 0x18: end (all must add up to num_samples) */
loop_flag = read_32bitLE(0x18, streamFile); /* with loop disabled only loop section has samples */
if (loop_flag) {
loop_start = read_32bitLE(0x10, streamFile);
loop_end = loop_start + read_32bitLE(0x14, streamFile);
}
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples, loop_start, loop_end);
fail:
return NULL;
}
/* AQUASTYLE wrapper [Touhou Genso Wanderer -Reloaded- (Switch)] */
VGMSTREAM * init_vgmstream_opus_opusx(STREAMFILE *streamFile) {
off_t offset;
int num_samples, loop_start = 0, loop_end = 0;
float modifier;
/* checks */
if (!check_extensions(streamFile, "opusx"))
goto fail;
if (read_32bitBE(0x00, streamFile) != 0x4F505553) /* "OPUS" */
goto fail;
offset = 0x10;
/* values are for the original 44100 files, but Opus resamples to 48000 */
modifier = 48000.0f / 44100.0f;
num_samples = 0;//read_32bitLE(0x04, streamFile) * modifier; /* better use calc'd num_samples */
loop_start = read_32bitLE(0x08, streamFile) * modifier;
loop_end = read_32bitLE(0x0c, streamFile) * modifier;
/* resampling calcs are slighly off and may to over num_samples, but by removing delay seems ok */
if (loop_start >= 120) {
loop_start -= 128;
loop_end -= 128;
}
else {
loop_end = 0;
}
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples, loop_start, loop_end);
fail:
return NULL;
}
/* Prototype variation [Clannad (Switch)] */
VGMSTREAM * init_vgmstream_opus_prototype(STREAMFILE *streamFile) {
off_t offset = 0;
int num_samples = 0, loop_start = 0, loop_end = 0, loop_flag;
/* checks */
if (!check_extensions(streamFile, "opus,lopus"))
goto fail;
if (read_32bitBE(0x00, streamFile) != 0x4F505553 || /* "OPUS" */
read_32bitBE(0x18, streamFile) != 0x01000080)
goto fail;
offset = 0x18;
num_samples = read_32bitLE(0x08, streamFile);
/* Check if there's a loop end value to determine loop_flag*/
loop_flag = read_32bitLE(0x10, streamFile);
if (loop_flag) {
loop_start = read_32bitLE(0x0C, streamFile);
loop_end = read_32bitLE(0x10, streamFile);
}
return init_vgmstream_opus(streamFile, meta_OPUS, offset, num_samples, loop_start, loop_end);
fail:
return NULL;
}
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