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vgmstream/src/meta/sqex_scd.c

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#include "meta.h"
#include "../coding/coding.h"
#include "../layout/layout.h"
#ifdef VGM_USE_VORBIS
static void scd_ogg_v2_decryption_callback(void* ptr, size_t size, size_t nmemb, void* datasource);
static void scd_ogg_v3_decryption_callback(void* ptr, size_t size, size_t nmemb, void* datasource);
#endif
/* SCD - Square-Enix games (FF XIII, XIV) */
VGMSTREAM* init_vgmstream_sqex_scd(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
off_t start_offset, tables_offset, meta_offset, extradata_offset, name_offset = 0;
int32_t stream_size, extradata_size, loop_start, loop_end;
int loop_flag = 0, channels, codec, sample_rate;
int version, target_entry, aux_chunk_count;
int total_subsongs, target_subsong = sf->stream_index;
int big_endian;
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
/* checks */
if (!check_extensions(sf, "scd"))
goto fail;
/** main header **/
if (!is_id32be(0x00,sf, "SEDB") &&
!is_id32be(0x04,sf, "SSCF"))
goto fail;
big_endian = read_u8(0x0c,sf) == 0x01;
if (big_endian) { /* big endian flag */
//size_offset = 0x14;
read_32bit = read_32bitBE;
read_16bit = read_16bitBE;
} else {
//size_offset = 0x10;
read_32bit = read_32bitLE;
read_16bit = read_16bitLE;
}
/* v2: FFXIII demo (PS3), FFT0 test files (PC); v3: common; v4: Kingdom Hearts 2.8 (PS4) */
version = read_32bit(0x08,sf);
if (version != 2 && version != 3 && version != 4)
goto fail;
/* SSCF version? (older SSCFs from Crisis Core/FFXI X360 seem to be V3/2) */
if (read_u8(0x0d,sf) != 0x04)
goto fail;
tables_offset = read_16bit(0x0e,sf); /* usually 0x30 or 0x20 */
#if 0
/* FFXIII music_68tak.ps3.scd is 0x80 shorter? */
if (read_32bit(size_offset,sf) != get_streamfile_size(sf))
goto fail;
#endif
/** offset tables **/
/* 0x00(2): table1/4 (unknown) entries */
/* 0x02(2): table2 (unknown) entries */
/* 0x04(2): table3 (headers) entries */
/* 0x06(2): unknown, varies even for clone files */
/* (implicit: table1 starts at 0x20) */
/* 0x08: table2 (unknown) start offset */
/* 0x0c: table3 (headers) start offset */
/* 0x10: table4 (unknown) start offset */
/* 0x14: always null? */
/* 0x18: table5? (unknown) start offset? */
/* 0x1c: unknown, often null */
/* each table entry is an uint32_t offset; after entries there is padding */
/* if a table isn't present entries is 0 and offset points to next table */
/* find meta_offset in table3 (headers) and total subsongs */
{
int i;
int headers_entries = read_16bit(tables_offset+0x04,sf);
off_t headers_offset = read_32bit(tables_offset+0x0c,sf);
if (target_subsong == 0) target_subsong = 1;
total_subsongs = 0;
meta_offset = 0;
/* manually find subsongs as entries can be dummy (ex. sfx banks in FF XIV or FF Type-0) */
for (i = 0; i < headers_entries; i++) {
off_t entry_offset = read_32bit(headers_offset + i*0x04,sf);
if (read_32bit(entry_offset+0x0c,sf) == -1)
continue; /* codec -1 when dummy */
total_subsongs++;
if (!meta_offset && total_subsongs == target_subsong) {
meta_offset = entry_offset;
target_entry = i;
}
}
/* SCD can contain 0 entries too */
if (meta_offset == 0) {
vgm_logi("SQEX SCD: bank has no subsongs (ignore)\n");
goto fail;
}
}
/** stream header **/
stream_size = read_32bit(meta_offset+0x00,sf);
channels = read_32bit(meta_offset+0x04,sf);
sample_rate = read_32bit(meta_offset+0x08,sf);
codec = read_32bit(meta_offset+0x0c,sf);
loop_start = read_32bit(meta_offset+0x10,sf);
loop_end = read_32bit(meta_offset+0x14,sf);
extradata_size = read_32bit(meta_offset+0x18,sf);
aux_chunk_count = read_32bit(meta_offset+0x1c,sf);
/* 0x01e(2): unknown, seen in some FF XIV sfx (MSADPCM) */
loop_flag = (loop_end > 0);
extradata_offset = meta_offset + 0x20;
start_offset = extradata_offset + extradata_size;
/* only "MARK" chunk is known (some FF XIV PS3 have "STBL" but it's not counted) */
if (aux_chunk_count > 1 && aux_chunk_count < 0xFFFF) { /* some FF XIV Heavensward IMA sfx have 0x01000000 */
VGM_LOG("SCD: unknown aux chunk count %i\n", aux_chunk_count);
goto fail;
}
/* skips aux chunks, sometimes needed (Lightning Returns X360, FF XIV PC) */
if (aux_chunk_count && is_id32be(extradata_offset, sf, "MARK")) {
extradata_offset += read_32bit(extradata_offset+0x04, sf);
}
/* find name if possible */
if (version == 4) {
int info_entries = read_16bit(tables_offset+0x00,sf);
int headers_entries = read_16bit(tables_offset+0x04,sf);
off_t info_offset = tables_offset+0x20;
/* not very exact as table1 and table3 entries may differ in V3, not sure about V4 */
if (info_entries == headers_entries) {
off_t entry_offset = read_16bit(info_offset + 0x04*target_entry,sf);
name_offset = entry_offset+0x30;
}
}
#ifdef VGM_USE_VORBIS
/* special case using init_vgmstream_ogg_vorbis */
if (codec == 0x06) {
VGMSTREAM *ogg_vgmstream;
uint8_t ogg_version, ogg_byte;
ogg_vorbis_meta_info_t ovmi = {0};
ovmi.meta_type = meta_SQEX_SCD;
ovmi.total_subsongs = total_subsongs;
ovmi.disable_reordering = 1; /* already ordered */
/* loop values are in bytes, let init_vgmstream_ogg_vorbis find loop comments instead */
ogg_version = read_u8(extradata_offset + 0x00, sf);
/* 0x01(1): 0x20 in v2/3, this ogg miniheader size? */
ogg_byte = read_u8(extradata_offset + 0x02, sf);
/* 0x03(1): ? in v3 */
if (ogg_version == 0) { /* 0x10? header, then custom Vorbis header before regular Ogg (FF XIV PC v1) */
ovmi.stream_size = stream_size;
}
else { /* 0x20 header, then seek table */
size_t seek_table_size = read_32bit(extradata_offset+0x10, sf);
size_t vorb_header_size = read_32bit(extradata_offset+0x14, sf);
/* 0x18(4): ? (can be 0) */
if ((extradata_offset-meta_offset) + seek_table_size + vorb_header_size != extradata_size)
goto fail;
ovmi.stream_size = vorb_header_size + stream_size;
start_offset = extradata_offset + 0x20 + seek_table_size; /* extradata_size skips vorb_header */
if (ogg_version == 2) { /* header is XOR'ed using byte (FF XIV PC) */
ovmi.decryption_callback = scd_ogg_v2_decryption_callback;
ovmi.scd_xor = ogg_byte;
ovmi.scd_xor_length = vorb_header_size;
}
else if (ogg_version == 3) { /* file is XOR'ed using table (FF XIV Heavensward PC) */
ovmi.decryption_callback = scd_ogg_v3_decryption_callback;
ovmi.scd_xor = stream_size & 0xFF; /* ogg_byte not used? */
ovmi.scd_xor_length = vorb_header_size + stream_size;
}
else {
VGM_LOG("SCD: unknown ogg_version 0x%x\n", ogg_version);
}
}
/* actual Ogg init */
ogg_vgmstream = init_vgmstream_ogg_vorbis_config(sf, start_offset, &ovmi);
if (ogg_vgmstream && name_offset)
read_string(ogg_vgmstream->stream_name, PATH_LIMIT, name_offset, sf);
return ogg_vgmstream;
}
#endif
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channels, loop_flag);
if (!vgmstream) goto fail;
vgmstream->sample_rate = sample_rate;
vgmstream->num_streams = total_subsongs;
vgmstream->stream_size = stream_size;
vgmstream->meta_type = meta_SQEX_SCD;
if (name_offset)
read_string(vgmstream->stream_name, STREAM_NAME_SIZE, name_offset, sf);
switch (codec) {
case 0x01: /* PCM */
vgmstream->coding_type = coding_PCM16LE;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x02;
vgmstream->num_samples = pcm_bytes_to_samples(stream_size, channels, 16);
if (loop_flag) {
vgmstream->loop_start_sample = pcm_bytes_to_samples(loop_start, channels, 16);
vgmstream->loop_end_sample = pcm_bytes_to_samples(loop_end, channels, 16);
}
break;
case 0x03: /* PS-ADPCM [Final Fantasy Type-0] */
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x10;
vgmstream->num_samples = ps_bytes_to_samples(stream_size, channels);
if (loop_flag) {
vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start, channels);
vgmstream->loop_end_sample = ps_bytes_to_samples(loop_end, channels);
}
break;
case 0x06: /* OGG [Final Fantasy XIII-2 (PC), Final Fantasy XIV (PC)] */
goto fail; /* handled above */
#ifdef VGM_USE_MPEG
case 0x07: { /* MPEG [Final Fantasy XIII (PS3)] */
mpeg_custom_config cfg = {0};
cfg.interleave = 0x800; /* for multistream [Final Fantasy XIII-2 (PS3)], otherwise ignored */
cfg.data_size = stream_size;
vgmstream->codec_data = init_mpeg_custom(sf, start_offset, &vgmstream->coding_type, vgmstream->channels, MPEG_SCD, &cfg);
if (!vgmstream->codec_data) goto fail;
vgmstream->layout_type = layout_none;
/* some Drakengard 3, Kingdom Hearts HD have adjusted sample rate (47999, 44099), for looping? */
vgmstream->num_samples = mpeg_bytes_to_samples(stream_size, vgmstream->codec_data);
vgmstream->loop_start_sample = mpeg_bytes_to_samples(loop_start, vgmstream->codec_data);
vgmstream->loop_end_sample = mpeg_bytes_to_samples(loop_end, vgmstream->codec_data);
/* somehow loops offsets aren't always frame-aligned, and the code below supposedly helped,
* but there isn't much difference since MPEG loops are rough (1152-aligned). Seems it
* would help more loop_start - ~1000, loop_end + ~1000 (ex. FFXIII-2 music_SunMizu.ps3.scd) */
//vgmstream->num_samples -= vgmstream->num_samples % 576;
//vgmstream->loop_start_sample -= vgmstream->loop_start_sample % 576;
//vgmstream->loop_end_sample -= vgmstream->loop_end_sample % 576;
break;
}
#endif
case 0x0C: /* MS ADPCM [Final Fantasy XIV (PC) sfx] */
case 0x17: /* MS ADPCM [Dragon Quest X (Switch)] (no diffs except frame size?) */
vgmstream->coding_type = coding_MSADPCM;
vgmstream->layout_type = layout_none;
vgmstream->frame_size = read_16bit(extradata_offset + 0x0c, sf);
/* WAVEFORMATEX in extradata_offset */
if (!msadpcm_check_coefs(sf, extradata_offset + 0x14))
goto fail;
vgmstream->num_samples = msadpcm_bytes_to_samples(stream_size, vgmstream->frame_size, vgmstream->channels);
if (loop_flag) {
vgmstream->loop_start_sample = msadpcm_bytes_to_samples(loop_start, vgmstream->frame_size, vgmstream->channels);
vgmstream->loop_end_sample = msadpcm_bytes_to_samples(loop_end, vgmstream->frame_size, vgmstream->channels);
}
break;
case 0x0A: /* DSP ADPCM [Dragon Quest X (Wii)] */
case 0x15: { /* DSP ADPCM [Dragon Quest X (Wii U)] (no apparent differences except higher sample rate) */
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x800;
vgmstream->interleave_first_skip = 0x60;
vgmstream->interleave_first_block_size = vgmstream->interleave_block_size - vgmstream->interleave_first_skip;
/* standard dsp header at start_offset */
dsp_read_coefs_be(vgmstream, sf, start_offset+0x1c, vgmstream->interleave_block_size);
dsp_read_hist_be(vgmstream, sf, start_offset+0x40, vgmstream->interleave_block_size);
vgmstream->num_samples = read_32bit(start_offset+0x00,sf);
if (loop_flag) {
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end + 1;
}
start_offset += vgmstream->interleave_first_skip;
break;
}
#ifdef VGM_USE_FFMPEG
case 0x0B: { /* XMA2 [Final Fantasy (X360), Lightning Returns (X360) sfx, Kingdom Hearts 2.8 (X1)] */
uint8_t buf[0x100];
int32_t bytes;
/* extradata:
* 0x00: fmt0x166 header (BE X360, LE XBone)
* 0x34: seek table */
bytes = ffmpeg_make_riff_xma_from_fmt_chunk(buf,0x100, extradata_offset,0x34, stream_size, sf, big_endian);
vgmstream->codec_data = init_ffmpeg_header_offset(sf, buf, bytes, start_offset, stream_size);
if (!vgmstream->codec_data) goto fail;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
xma2_parse_fmt_chunk_extra(sf, extradata_offset, NULL, &vgmstream->num_samples, NULL, NULL, big_endian);
vgmstream->loop_start_sample = loop_start; /* same loops in chunk */
vgmstream->loop_end_sample = loop_end;
xma_fix_raw_samples(vgmstream, sf, start_offset, stream_size, extradata_offset, 1,1);
break;
}
case 0x0E: { /* ATRAC3/ATRAC3plus [Lord of Arcana (PSP), Final Fantasy Type-0] */
int fact_samples = 0;
vgmstream->codec_data = init_ffmpeg_atrac3_riff(sf, start_offset, &fact_samples);
if (!vgmstream->codec_data) goto fail;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = fact_samples;
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end + 1;
/* loop/sample values are relative (without skip) vs RIFF (with skip), matching "smpl" otherwise */
break;
}
#endif
#ifdef VGM_USE_ATRAC9
case 0x16: { /* ATRAC9 [Kingdom Hearts 2.8 (PS4)] */
atrac9_config cfg = {0};
/* post header has various typical ATRAC9 values */
cfg.channels = vgmstream->channels;
cfg.config_data = read_32bit(extradata_offset+0x0c,sf);
cfg.encoder_delay = read_32bit(extradata_offset+0x18,sf);
vgmstream->codec_data = init_atrac9(&cfg);
if (!vgmstream->codec_data) goto fail;
vgmstream->coding_type = coding_ATRAC9;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = read_32bit(extradata_offset+0x10,sf); /* loop values above are also weird and ignored */
vgmstream->loop_start_sample = read_32bit(extradata_offset+0x20, sf);
vgmstream->loop_end_sample = read_32bit(extradata_offset+0x24, sf) + 1;
if (loop_flag) {
vgmstream->loop_start_sample -= cfg.encoder_delay;
vgmstream->loop_end_sample -= cfg.encoder_delay;
}
break;
}
#endif
case -1: /* used for dummy entries */
default:
VGM_LOG("SCD: unknown codec 0x%x\n", codec);
goto fail;
}
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
#ifdef VGM_USE_VORBIS
static void scd_ogg_v2_decryption_callback(void* ptr, size_t size, size_t nmemb, void* datasource) {
uint8_t *ptr8 = ptr;
size_t bytes_read = size * nmemb;
ogg_vorbis_io *io = datasource;
/* no encryption, sometimes happens */
if (io->scd_xor == 0x00)
return;
/* header is XOR'd with a constant byte */
if (io->offset < io->scd_xor_length) {
int i, num_crypt;
num_crypt = io->scd_xor_length - io->offset;
if (num_crypt > bytes_read)
num_crypt = bytes_read;
for (i = 0; i < num_crypt; i++) {
ptr8[i] ^= (uint8_t)io->scd_xor;
}
}
}
static void scd_ogg_v3_decryption_callback(void* ptr, size_t size, size_t nmemb, void* datasource) {
/* V3 decryption table found in the .exe of FF XIV Heavensward */
static const uint8_t scd_ogg_v3_lookuptable[256] = {
0x3A, 0x32, 0x32, 0x32, 0x03, 0x7E, 0x12, 0xF7, 0xB2, 0xE2, 0xA2, 0x67, 0x32, 0x32, 0x22, 0x32, // 00-0F
0x32, 0x52, 0x16, 0x1B, 0x3C, 0xA1, 0x54, 0x7B, 0x1B, 0x97, 0xA6, 0x93, 0x1A, 0x4B, 0xAA, 0xA6, // 10-1F
0x7A, 0x7B, 0x1B, 0x97, 0xA6, 0xF7, 0x02, 0xBB, 0xAA, 0xA6, 0xBB, 0xF7, 0x2A, 0x51, 0xBE, 0x03, // 20-2F
0xF4, 0x2A, 0x51, 0xBE, 0x03, 0xF4, 0x2A, 0x51, 0xBE, 0x12, 0x06, 0x56, 0x27, 0x32, 0x32, 0x36, // 30-3F
0x32, 0xB2, 0x1A, 0x3B, 0xBC, 0x91, 0xD4, 0x7B, 0x58, 0xFC, 0x0B, 0x55, 0x2A, 0x15, 0xBC, 0x40, // 40-4F
0x92, 0x0B, 0x5B, 0x7C, 0x0A, 0x95, 0x12, 0x35, 0xB8, 0x63, 0xD2, 0x0B, 0x3B, 0xF0, 0xC7, 0x14, // 50-5F
0x51, 0x5C, 0x94, 0x86, 0x94, 0x59, 0x5C, 0xFC, 0x1B, 0x17, 0x3A, 0x3F, 0x6B, 0x37, 0x32, 0x32, // 60-6F
0x30, 0x32, 0x72, 0x7A, 0x13, 0xB7, 0x26, 0x60, 0x7A, 0x13, 0xB7, 0x26, 0x50, 0xBA, 0x13, 0xB4, // 70-7F
0x2A, 0x50, 0xBA, 0x13, 0xB5, 0x2E, 0x40, 0xFA, 0x13, 0x95, 0xAE, 0x40, 0x38, 0x18, 0x9A, 0x92, // 80-8F
0xB0, 0x38, 0x00, 0xFA, 0x12, 0xB1, 0x7E, 0x00, 0xDB, 0x96, 0xA1, 0x7C, 0x08, 0xDB, 0x9A, 0x91, // 90-9F
0xBC, 0x08, 0xD8, 0x1A, 0x86, 0xE2, 0x70, 0x39, 0x1F, 0x86, 0xE0, 0x78, 0x7E, 0x03, 0xE7, 0x64, // A0-AF
0x51, 0x9C, 0x8F, 0x34, 0x6F, 0x4E, 0x41, 0xFC, 0x0B, 0xD5, 0xAE, 0x41, 0xFC, 0x0B, 0xD5, 0xAE, // B0-BF
0x41, 0xFC, 0x3B, 0x70, 0x71, 0x64, 0x33, 0x32, 0x12, 0x32, 0x32, 0x36, 0x70, 0x34, 0x2B, 0x56, // C0-CF
0x22, 0x70, 0x3A, 0x13, 0xB7, 0x26, 0x60, 0xBA, 0x1B, 0x94, 0xAA, 0x40, 0x38, 0x00, 0xFA, 0xB2, // D0-DF
0xE2, 0xA2, 0x67, 0x32, 0x32, 0x12, 0x32, 0xB2, 0x32, 0x32, 0x32, 0x32, 0x75, 0xA3, 0x26, 0x7B, // E0-EF
0x83, 0x26, 0xF9, 0x83, 0x2E, 0xFF, 0xE3, 0x16, 0x7D, 0xC0, 0x1E, 0x63, 0x21, 0x07, 0xE3, 0x01, // F0-FF
};
uint8_t *ptr8 = ptr;
size_t bytes_read = size * nmemb;
ogg_vorbis_io *io = datasource;
/* file is XOR'd with a table (algorithm and table by Ioncannon) */
{ //if (io->offset < io->scd_xor_length)
int i, num_crypt;
uint8_t byte1, byte2, xor_byte;
num_crypt = bytes_read;
byte1 = io->scd_xor & 0x7F;
byte2 = io->scd_xor & 0x3F;
for (i = 0; i < num_crypt; i++) {
xor_byte = scd_ogg_v3_lookuptable[(byte2 + io->offset + i) & 0xFF];
xor_byte &= 0xFF;
xor_byte ^= ptr8[i];
xor_byte ^= byte1;
ptr8[i] = xor_byte;
}
}
}
#endif
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