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vgmstream/src/meta/sndx.c
bnnm bf9cc7f635 cleanup: rename sxd to sndx
2023-07-23 11:06:14 +02:00

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C
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#include "meta.h"
#include "../coding/coding.h"
#include "../util/chunks.h"
/* SXDF/SXDS - Sony/SCE's SNDX lib format (cousin of SGXD) [Gravity Rush, Freedom Wars, Soul Sacrifice PSV] */
VGMSTREAM* init_vgmstream_sndx(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
STREAMFILE* sf_sxd1 = NULL, *sf_sxd2 = NULL, *sf_data = NULL, *sf_h = NULL, *sf_b = NULL;
off_t start_offset, chunk_offset, first_offset = 0x60, name_offset = 0;
size_t chunk_size, stream_size = 0;
int is_dual, is_external;
int loop_flag, channels, codec, sample_rate;
int32_t num_samples, loop_start_sample, loop_end_sample;
uint32_t flags, at9_config_data = 0;
int total_subsongs, target_subsong = sf->stream_index;
/* checks */
/* .sxd: header+data (SXDF)
* .sxd1: header (SXDF) + .sxd2 = data (SXDS)
* .sxd3: sxd1 + sxd2 pasted together (found in some PS4 games, ex. Fate Extella)*/
if (!check_extensions(sf,"sxd,sxd2,sxd3"))
goto fail;
/* setup head/body variations */
if (check_extensions(sf,"sxd2")) {
/* sxd1+sxd2: open sxd1 as header */
sf_h = open_streamfile_by_ext(sf, "sxd1");
if (!sf_h) goto fail;
sf_sxd1 = sf_h;
sf_sxd2 = sf;
is_dual = 1;
}
else if (check_extensions(sf,"sxd3")) {
/* sxd3: make subfiles for head and body to simplify parsing */
off_t sxd1_offset = 0x00;
size_t sxd1_size = read_u32le(0x08, sf);
off_t sxd2_offset = sxd1_size;
size_t sxd2_size = get_streamfile_size(sf) - sxd1_size;
sf_h = setup_subfile_streamfile(sf, sxd1_offset, sxd1_size, "sxd1");
if (!sf_h) goto fail;
sf_b = setup_subfile_streamfile(sf, sxd2_offset, sxd2_size, "sxd2");
if (!sf_b) goto fail;
sf_sxd1 = sf_h;
sf_sxd2 = sf_b;
is_dual = 1;
}
else {
/* sxd: use the current file as header */
sf_sxd1 = sf;
sf_sxd2 = NULL;
is_dual = 0;
}
if (sf_sxd1 && !is_id32be(0x00, sf_sxd1, "SXDF"))
goto fail;
if (sf_sxd2 && !is_id32be(0x00, sf_sxd2, "SXDS"))
goto fail;
/* typical chunks: NAME, WAVE and many control chunks (SXDs don't need to contain any sound data) */
if (!find_chunk_le(sf_sxd1, get_id32be("WAVE"),first_offset,0, &chunk_offset,&chunk_size))
goto fail;
/* check multi-streams (usually only in SFX containers) */
total_subsongs = read_s32le(chunk_offset + 0x04,sf_sxd1);
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
// todo rarely a WAVE subsong may point to a repeated data offset, with different tags only
/* read stream header */
{
uint32_t table_offset, header_offset, stream_offset;
/* get target offset using table of relative offsets within WAVE */
table_offset = chunk_offset + 0x08 + 4 * (target_subsong - 1);
header_offset = table_offset + read_32bitLE(table_offset,sf_sxd1);
flags = read_u32le(header_offset+0x00,sf_sxd1);
codec = read_u8 (header_offset+0x04,sf_sxd1);
channels = read_u8 (header_offset+0x05,sf_sxd1);
/* 0x06(2): unknown, rarely 0xFF */
sample_rate = read_s32le(header_offset+0x08,sf_sxd1);
/* 0x0c(4): unknown size? (0x4000/0x3999/0x3333/etc, not related to extra data) */
/* 0x10(4): ? + volume? + pan? (can be 0 for music) */
num_samples = read_s32le(header_offset+0x14,sf_sxd1);
loop_start_sample = read_s32le(header_offset+0x18,sf_sxd1);
loop_end_sample = read_s32le(header_offset+0x1c,sf_sxd1);
stream_size = read_u32le(header_offset+0x20,sf_sxd1);
stream_offset = read_u32le(header_offset+0x24,sf_sxd1);
loop_flag = loop_start_sample != -1 && loop_end_sample != -1;
/* known flag combos:
* 0x00: Chaos Rings 2 sfx (RAM + no tags)
* 0x01: common (RAM + tags)
* 0x02: Chaos Rings 3 sfx (stream + no tags)
* 0x03: common (stream + tags)
* 0x05: Gravity Rush 2 sfx (RAM + tags) */
//has_tags = flags & 1;
is_external = flags & 2;
//unknown = flags & 4; /* no apparent differences with/without it? */
/* flag 1 signals TLV-like extra data. Format appears to be 0x00(1)=tag?, 0x01(1)=extra size*32b?, 0x02(2)=config?
* but not always (ex. size=0x07 but actually=0), perhaps only some bits are used or varies with tag, or are subflags.
* A tag may appear with or without extra data (even 0x0a), 0x01/03/04/06 are common at the beginnig (imply number of tags?),
* 0x64/7F are common at the end (but not always), 0x0A=ATRAC9 config, 0x0B/0C appear with RAM preloading data
* (most variable in Soul Sacrifice; total TLVs size isn't plainly found in the SXD header AFAIK). */
/* manually try to find ATRAC9 tag */
if (codec == 0x42) {
off_t extra_offset = header_offset + 0x28;
off_t max_offset = chunk_offset + chunk_size;
if (!(flags & 1))
goto fail;
while (extra_offset < max_offset) {
uint32_t tag = read_u32be(extra_offset, sf_sxd1);
if (tag == 0x0A010000 || tag == 0x0A010600) {
at9_config_data = read_u32le(extra_offset+0x04, sf_sxd1); /* yes, LE */
break;
}
extra_offset += 0x04;
}
if (!at9_config_data)
goto fail;
}
/* usually .sxd=header+data and .sxd1=header + .sxd2=data, but rarely sxd1 may contain data [The Last Guardian (PS4)] */
if (is_external) {
start_offset = stream_offset; /* absolute if external */
} else {
start_offset = header_offset + 0x24 + stream_offset; /* from current entry offset if internal */
}
}
/* get stream name (NAME is tied to REQD/cues, and SFX cues repeat WAVEs, but should work ok for streams) */
if (is_dual && find_chunk_le(sf_sxd1, get_id32be("NAME"),first_offset,0, &chunk_offset,NULL)) {
/* table: relative offset (32b) + hash? (32b) + cue index (32b) */
int i;
int num_entries = read_s16le(chunk_offset + 0x04, sf_sxd1); /* can be bigger than streams */
for (i = 0; i < num_entries; i++) {
uint32_t index = read_u32le(chunk_offset + 0x08 + 0x08 + i * 0x0c,sf_sxd1);
if (index+1 == target_subsong) {
name_offset = chunk_offset + 0x08 + 0x00 + i*0x0c + read_u32le(chunk_offset + 0x08 + 0x00 + i * 0x0c, sf_sxd1);
break;
}
}
}
if (is_external && !is_dual) {
VGM_LOG("SXD: found single sxd with external data\n");
goto fail;
}
/* even dual files may have some non-external streams */
if (is_external) {
sf_data = sf_sxd2;
} else {
sf_data = sf_sxd1;
}
if (start_offset > get_streamfile_size(sf_data)) {
VGM_LOG("SXD: wrong location?\n");
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channels, loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_SNDX;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = num_samples;
vgmstream->loop_start_sample = loop_start_sample;
vgmstream->loop_end_sample = loop_end_sample;
vgmstream->num_streams = total_subsongs;
vgmstream->stream_size = stream_size;
if (name_offset)
read_string(vgmstream->stream_name,STREAM_NAME_SIZE, name_offset,sf_sxd1);
switch (codec) {
case 0x20: /* PS-ADPCM [Hot Shots Golf: World Invitational (Vita) sfx] */
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x10;
break;
case 0x21: /* HEVAG [Gravity Rush (Vita) sfx] */
vgmstream->coding_type = coding_HEVAG;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x10;
break;
#ifdef VGM_USE_ATRAC9
case 0x42: { /* ATRAC9 [Soul Sacrifice (Vita), Freedom Wars (Vita), Gravity Rush 2 (PS4)] */
atrac9_config cfg = {0};
cfg.channels = vgmstream->channels;
cfg.config_data = at9_config_data;
vgmstream->codec_data = init_atrac9(&cfg);
if (!vgmstream->codec_data) goto fail;
vgmstream->coding_type = coding_ATRAC9;
vgmstream->layout_type = layout_none;
break;
}
#endif
//case 0x28: /* dummy codec? (found with 0 samples) [Hot Shots Golf: World Invitational (Vita) sfx] */
default:
VGM_LOG("SXD: unknown codec 0x%x\n", codec);
goto fail;
}
/* open the file for reading */
if (!vgmstream_open_stream(vgmstream, sf_data, start_offset))
goto fail;
if (sf_h) close_streamfile(sf_h);
if (sf_b) close_streamfile(sf_b);
return vgmstream;
fail:
if (sf_h) close_streamfile(sf_h);
if (sf_b) close_streamfile(sf_b);
close_vgmstream(vgmstream);
return NULL;
}
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