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vgmstream/src/meta/sqex_scd.c

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19 KiB
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#include "meta.h"
#include "../coding/coding.h"
#include "sqex_scd_streamfile.h"
#ifdef VGM_USE_VORBIS
static void scd_ogg_decrypt_v2_callback(void *ptr, size_t size, size_t nmemb, void *datasource, int bytes_read);
static void scd_ogg_decrypt_v3_callback(void *ptr, size_t size, size_t nmemb, void *datasource, int bytes_read);
#endif
/* SCD - Square-Enix console games (FF XIII, XIV) */
VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
off_t start_offset, tables_offset, headers_offset, meta_offset, post_meta_offset;
int headers_entries;
int32_t stream_size, loop_start, loop_end;
int target_stream = streamFile->stream_index;
int loop_flag = 0, channel_count, codec_id, sample_rate;
int aux_chunk_count;
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
/* check extension, case insensitive */
if ( !check_extensions(streamFile, "scd") ) goto fail;
streamFile->get_name(streamFile,filename,sizeof(filename));
/* SEDB */
if (read_32bitBE(0x00,streamFile) != 0x53454442) goto fail;
/* SSCF */
if (read_32bitBE(0x04,streamFile) != 0x53534346) goto fail;
/** main header section **/
if (read_32bitBE(0x08,streamFile) == 2 || /* version 2 BE, as seen in FFXIII demo for PS3 */
read_32bitBE(0x08,streamFile) == 3) { /* version 3 BE, as seen in FFXIII for PS3 */
read_32bit = read_32bitBE;
read_16bit = read_16bitBE;
//size_offset = 0x14;
} else if (read_32bitLE(0x08,streamFile) == 3 || /* version 2/3 LE, as seen in FFXIV for PC (and others?) */
read_32bitLE(0x08,streamFile) == 2) {
read_32bit = read_32bitLE;
read_16bit = read_16bitLE;
//size_offset = 0x10;
} else goto fail;
/* 0x0c: probably 0=LE, 1=BE */
/* 0x0d: unk (always 0x04) */
tables_offset = read_16bit(0xe,streamFile);
#if 0
/* never mind, FFXIII music_68tak.ps3.scd is 0x80 shorter */
/* check file size with header value */
if (read_32bit(size_offset,streamFile) != get_streamfile_size(streamFile))
goto fail;
#endif
/** offset tables **/
/* 0x00: table1_unknown entries */
/* 0x02: table2_unknown entries */
/* 0x04: table_headers entries */
/* 0x06: unknown (varies) */
/* 0x08: table1_unknown start offset */
/* 0x0c: table_headers start offset */
/* 0x10: table2_unknown start offset */
/* 0x14: unknown (0x0) */
/* 0x18: unknown offset */
/* 0x1c: unknown (0x0) */
headers_entries = read_16bit(tables_offset+0x04,streamFile);
if (target_stream == 0) target_stream = 1; /* auto: default to 1 */
if (target_stream < 0 || target_stream > headers_entries || headers_entries < 1) goto fail;
headers_offset = read_32bit(tables_offset+0x0c,streamFile);
/** header table entries (each is an uint32_t offset to stream header) **/
meta_offset = read_32bit(headers_offset + (target_stream-1)*4,streamFile);
/** stream header **/
stream_size = read_32bit(meta_offset+0x00,streamFile);
channel_count = read_32bit(meta_offset+0x04,streamFile);
sample_rate = read_32bit(meta_offset+0x08,streamFile);
codec_id = read_32bit(meta_offset+0x0c,streamFile);
loop_start = read_32bit(meta_offset+0x10,streamFile);
loop_end = read_32bit(meta_offset+0x14,streamFile);
loop_flag = (loop_end > 0);
post_meta_offset = meta_offset + 0x20;
start_offset = post_meta_offset + read_32bit(meta_offset+0x18,streamFile);
aux_chunk_count = read_32bit(meta_offset+0x1c,streamFile);
/* 0x01e(e): unknown, seen in some FF XIV sfx (IMA) */
/* 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 has 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 && read_32bitBE(post_meta_offset, streamFile) == 0x4D41524B) { /* "MARK" */
post_meta_offset += read_32bit(post_meta_offset+0x04, streamFile);
}
#ifdef VGM_USE_VORBIS
/* special case using init_vgmstream_ogg_vorbis with callbacks */
if (codec_id == 0x06) {
VGMSTREAM * result = NULL;
uint32_t seek_table_size, vorb_header_size;
uint8_t xor_version, xor_byte;
vgm_vorbis_info_t inf = {0};
inf.loop_start = loop_start;
inf.loop_end = loop_end;
inf.loop_flag = loop_flag;
inf.loop_end_found = loop_flag;
inf.loop_length_found = 0;
inf.layout_type = layout_ogg_vorbis;
inf.meta_type = meta_SQEX_SCD;
/* the following could be simplified but it's not clear what field signals that seek table exists
* (seems that encrypted = always seek table, but maybe post_meta_offset+0x01 = 0x20) */
/* try regular Ogg with default values */
{
result = init_vgmstream_ogg_vorbis_callbacks(streamFile, filename, NULL, start_offset, &inf);
if (result != NULL)
return result;
}
/* skip seek table and try regular Ogg again */
{
seek_table_size = read_32bit(post_meta_offset+0x10, streamFile);
vorb_header_size = read_32bit(post_meta_offset+0x14, streamFile);
if ((post_meta_offset-meta_offset) + seek_table_size + vorb_header_size != read_32bit(meta_offset+0x18, streamFile)) {
return NULL;
}
start_offset = post_meta_offset + 0x20 + seek_table_size;
result = init_vgmstream_ogg_vorbis_callbacks(streamFile, filename, NULL, start_offset, &inf);
if (result != NULL)
return result;
}
/* try encrypted Ogg (with seek table already skipped) */
{
xor_version = read_8bit(post_meta_offset + 0x00, streamFile);
xor_byte = read_8bit(post_meta_offset + 0x02, streamFile);
if (xor_byte == 0)
return NULL; /* not actually encrypted, happens but should be handled above */
if (xor_version == 2) { /* header is XOR'ed using byte */
inf.decryption_enabled = 1;
inf.decryption_callback = scd_ogg_decrypt_v2_callback;
inf.scd_xor = xor_byte;
inf.scd_xor_length = vorb_header_size;
}
else if (xor_version == 3) { /* full file is XOR'ed using table */
inf.decryption_enabled = 1;
inf.decryption_callback = scd_ogg_decrypt_v3_callback;
inf.scd_xor = stream_size & 0xFF; /* xor_byte is not used? (also there is data at +0x03) */
inf.scd_xor_length = stream_size;
}
else {
VGM_LOG("SCD: unknown encryption 0x%x\n", xor_version);
return NULL;
}
/* hope this works */
return init_vgmstream_ogg_vorbis_callbacks(streamFile, filename, NULL, start_offset, &inf);
}
}
#endif
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->channels = channel_count;
vgmstream->sample_rate = sample_rate;
vgmstream->num_streams = headers_entries;
vgmstream->meta_type = meta_SQEX_SCD;
switch (codec_id) {
case 0x01: /* PCM */
vgmstream->coding_type = coding_PCM16_int;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = stream_size / 2 / channel_count;
if (loop_flag) {
vgmstream->loop_start_sample = loop_start / 2 / channel_count;
vgmstream->loop_end_sample = loop_end / 2 / channel_count;
}
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_codec_data *mpeg_data = NULL;
mpeg_custom_config cfg = {0};
cfg.interleave = 0x800; /* for multistream [Final Fantasy XIII-2 (PS3)], otherwise ignored */
cfg.data_size = stream_size;
mpeg_data = init_mpeg_custom_codec_data(streamFile, start_offset, &vgmstream->coding_type, vgmstream->channels, MPEG_SCD, &cfg);
if (!mpeg_data) goto fail;
vgmstream->codec_data = mpeg_data;
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, mpeg_data);
vgmstream->loop_start_sample = mpeg_bytes_to_samples(loop_start, mpeg_data);
vgmstream->loop_end_sample = mpeg_bytes_to_samples(loop_end, mpeg_data);
//todo find if this actually helps
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] */
vgmstream->coding_type = coding_MSADPCM;
vgmstream->layout_type = layout_none;
vgmstream->interleave_block_size = read_16bit(post_meta_offset+0x0c,streamFile);
vgmstream->num_samples = msadpcm_bytes_to_samples(stream_size, vgmstream->interleave_block_size, vgmstream->channels);
if (loop_flag) {
vgmstream->loop_start_sample = msadpcm_bytes_to_samples(loop_start, vgmstream->interleave_block_size, vgmstream->channels);
vgmstream->loop_end_sample = msadpcm_bytes_to_samples(loop_end, vgmstream->interleave_block_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) */
STREAMFILE * file;
int i;
const off_t interleave_size = 0x800;
const off_t stride_size = interleave_size * channel_count;
size_t total_size;
scd_int_codec_data * data = NULL;
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_scd_int;
/* a normal DSP header... */
total_size = (read_32bitBE(start_offset+0x04,streamFile)+1)/2;
vgmstream->num_samples = read_32bitBE(start_offset+0x00,streamFile);
if (loop_flag) {
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end+1;
}
/* verify other channel headers */
for (i = 1; i < channel_count; i++) {
if (read_32bitBE(start_offset+interleave_size*i+0,streamFile) != vgmstream->num_samples ||
(read_32bitBE(start_offset+4,streamFile)+1)/2 != total_size) {
goto fail;
}
}
/* the primary streamfile we'll be using */
file = streamFile->open(streamFile,filename,stride_size);
if (!file) goto fail;
vgmstream->ch[0].streamfile = file;
data = malloc(sizeof(scd_int_codec_data));
data->substream_count = channel_count;
data->substreams = calloc(channel_count, sizeof(VGMSTREAM *));
data->intfiles = calloc(channel_count, sizeof(STREAMFILE *));
vgmstream->codec_data = data;
for (i=0;i<channel_count;i++) {
STREAMFILE * intfile =
open_scdint_with_STREAMFILE(file, "ARBITRARY.DSP", start_offset+interleave_size*i, interleave_size, stride_size, total_size);
if (!intfile) goto fail;
data->substreams[i] = init_vgmstream_ngc_dsp_std(intfile);
data->intfiles[i] = intfile;
if (!data->substreams[i]) goto fail;
/* TODO: only handles mono substreams, though that's all we have with DSP */
/* save start things so we can restart for seeking/looping */
memcpy(data->substreams[i]->start_ch,data->substreams[i]->ch,sizeof(VGMSTREAMCHANNEL)*1);
memcpy(data->substreams[i]->start_vgmstream,data->substreams[i],sizeof(VGMSTREAM));
}
break;
}
#ifdef VGM_USE_FFMPEG
case 0x0B: { /* XMA2 [Final Fantasy (X360), Lightning Returns (X360) sfx] */
ffmpeg_codec_data *ffmpeg_data = NULL;
uint8_t buf[200];
int32_t bytes;
/* post_meta_offset+0x00: fmt0x166 header (BE), post_meta_offset+0x34: seek table */
bytes = ffmpeg_make_riff_xma_from_fmt_chunk(buf,200, post_meta_offset,0x34, stream_size, streamFile, 1);
if (bytes <= 0) goto fail;
ffmpeg_data = init_ffmpeg_header_offset(streamFile, buf,bytes, start_offset,stream_size);
if (!ffmpeg_data) goto fail;
vgmstream->codec_data = ffmpeg_data;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = ffmpeg_data->totalSamples;
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end;
break;
}
case 0x0E: { /* ATRAC3plus [Lord of Arcana (PSP)] */
ffmpeg_codec_data *ffmpeg_data = NULL;
/* full RIFF header at start_offset/post_meta_offset (same) */
ffmpeg_data = init_ffmpeg_offset(streamFile, start_offset,stream_size);
if (!ffmpeg_data) goto fail;
vgmstream->codec_data = ffmpeg_data;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = ffmpeg_data->totalSamples; /* fact samples */
vgmstream->loop_start_sample = loop_start;
vgmstream->loop_end_sample = loop_end;
/* manually read skip_samples if FFmpeg didn't do it */
if (ffmpeg_data->skipSamples <= 0) {
off_t chunk_offset;
size_t chunk_size, fact_skip_samples = 0;
if (!find_chunk_le(streamFile, 0x66616374,start_offset+0xc,0, &chunk_offset,&chunk_size)) /* find "fact" */
goto fail;
if (chunk_size == 0x8) {
fact_skip_samples = read_32bitLE(chunk_offset+0x4, streamFile);
} else if (chunk_size == 0xc) {
fact_skip_samples = read_32bitLE(chunk_offset+0x8, streamFile);
}
ffmpeg_set_skip_samples(ffmpeg_data, fact_skip_samples);
}
/* SCD loop/sample values are relative (without skip samples) vs RIFF (with skip samples), no need to adjust */
break;
}
#endif
default:
VGM_LOG("SCD: unknown codec_id 0x%x\n", codec_id);
goto fail;
}
if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
#ifdef VGM_USE_VORBIS
static void scd_ogg_decrypt_v2_callback(void *ptr, size_t size, size_t nmemb, void *datasource, int bytes_read) {
ogg_vorbis_streamfile * ov_streamfile = (ogg_vorbis_streamfile*)datasource;
/* header is XOR'd with a constant byte */
if (ov_streamfile->offset < ov_streamfile->scd_xor_length) {
int i, num_crypt;
num_crypt = ov_streamfile->scd_xor_length - ov_streamfile->offset;
if (num_crypt > bytes_read)
num_crypt = bytes_read;
for (i = 0; i < num_crypt; i++) {
((uint8_t*)ptr)[i] ^= (uint8_t)ov_streamfile->scd_xor;
}
}
}
static void scd_ogg_decrypt_v3_callback(void *ptr, size_t size, size_t nmemb, void *datasource, int bytes_read) {
/* V3 decryption table found in the .exe */
static const uint8_t scd_ogg_v3_lookuptable[256] = { /* FF XIV Heavensward */
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
};
ogg_vorbis_streamfile *ov_streamfile = (ogg_vorbis_streamfile*)datasource;
/* file is XOR'd with a table (algorithm and table by Ioncannon) */
if (ov_streamfile->offset < ov_streamfile->scd_xor_length) {
int i, num_crypt;
uint8_t byte1, byte2, xorByte;
num_crypt = bytes_read;
byte1 = ov_streamfile->scd_xor & 0x7F;
byte2 = ov_streamfile->scd_xor & 0x3F;
for (i = 0; i < num_crypt; i++) {
xorByte = scd_ogg_v3_lookuptable[(byte2 + ov_streamfile->offset + i) & 0xFF];
xorByte &= 0xFF;
xorByte ^= ((uint8_t*)ptr)[i];
xorByte ^= byte1;
((uint8_t*)ptr)[i] = (uint8_t)xorByte;
}
}
}
#endif
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