diff --git a/src/meta/sqex_scd.c b/src/meta/sqex_scd.c index a9560de4..f5553261 100644 --- a/src/meta/sqex_scd.c +++ b/src/meta/sqex_scd.c @@ -20,26 +20,6 @@ typedef struct _SCDINTSTREAMFILE static STREAMFILE *open_scdint_with_STREAMFILE(STREAMFILE *file, const char * filename, off_t start_offset, off_t interleave_block_size, off_t stride_size, size_t total_size); #ifdef VGM_USE_VORBIS -/* 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 -}; - 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 @@ -129,30 +109,30 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) { 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 == 0x6) { - vgm_vorbis_info_t inf; - uint32_t seek_table_size; - uint32_t vorb_header_size; VGMSTREAM * result = NULL; - - /* todo this skips the "MARK" chunk for FF XIV "03.scd", but without it actually the start_offset - * lands in a "OggS" though will fail in the "try skipping seek table" - * maybe this isn't needed and there is another bug, since other games with "MARK" don't need this */ - if (aux_chunk_count) { - post_meta_offset = meta_offset + 0x20; - - /* data at meta_offset is only 0x20 bytes, but there may be auxiliary chunks before anything else */ - for (; aux_chunk_count > 0; aux_chunk_count--) { - post_meta_offset += read_32bit(post_meta_offset+4,streamFile); /* skip aux chunks */ - } - start_offset = post_meta_offset + read_32bit(meta_offset+0x18,streamFile); - } + uint32_t seek_table_size, vorb_header_size; + uint8_t xor_version, xor_byte; + vgm_vorbis_info_t inf; - seek_table_size = read_32bit(post_meta_offset+0x10, streamFile); - vorb_header_size = read_32bit(post_meta_offset+0x14, streamFile); memset(&inf, 0, sizeof(inf)); inf.loop_start = loop_start; @@ -163,61 +143,68 @@ VGMSTREAM * init_vgmstream_sqex_scd(STREAMFILE *streamFile) { inf.layout_type = layout_ogg_vorbis; inf.meta_type = meta_SQEX_SCD; - result = init_vgmstream_ogg_vorbis_callbacks(streamFile, filename, NULL, start_offset, &inf); + /* 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) */ - if (result != NULL) { - return result; + /* try regular Ogg with default values */ + { + result = init_vgmstream_ogg_vorbis_callbacks(streamFile, filename, NULL, start_offset, &inf); + if (result != NULL) + return result; } - // try skipping seek table + /* 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) { + if (result != NULL) return result; - } } - // failed with Ogg, try deobfuscating header + /* try encrypted Ogg (with seek table already skipped) */ { - // skip chunks before xor_byte - uint8_t xor_version, xor_byte; + 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 */ - xor_version = read_8bit(post_meta_offset + 0, streamFile); - xor_byte = read_8bit(post_meta_offset + 2, streamFile); - if (xor_byte == 0) { - return NULL; - } - - if (xor_version <= 2) { + 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; /* header is XOR'ed */ - - } else if (xor_version == 3) { + 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? */ - inf.scd_xor_length = stream_size; /* full file is XOR'ed */ + inf.scd_xor = stream_size & 0xFF; /* xor_byte is not used? (also there is data at +0x03) */ + inf.scd_xor_length = stream_size; } - result = init_vgmstream_ogg_vorbis_callbacks(streamFile, filename, NULL, start_offset, &inf); - /* always? */ - return result; + 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 */ + + + /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channel_count,loop_flag); if (!vgmstream) goto fail; - /* fill in the vital statistics */ - vgmstream->channels = channel_count; + /* fill in the vital statistics */ + vgmstream->channels = channel_count; vgmstream->sample_rate = read_32bit(meta_offset+8,streamFile); vgmstream->num_streams = headers_entries; vgmstream->meta_type = meta_SQEX_SCD; @@ -568,6 +555,25 @@ static void scd_ogg_decrypt_v2_callback(void *ptr, size_t size, size_t nmemb, vo } 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) */