mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 09:55:53 +01:00
346 lines
12 KiB
C
346 lines
12 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "sqex_streamfile.h"
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/* AKB - found in SQEX 'sdlib' iOS/Android games */
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VGMSTREAM* init_vgmstream_akb(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset, extradata_offset = 0;
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size_t stream_size, header_size, subheader_size = 0, extradata_size = 0;
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int loop_flag = 0, channels, codec, sample_rate, version, flags = 0;
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int num_samples, loop_start, loop_end;
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/* checks */
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if (!is_id32be(0x00,sf, "AKB "))
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goto fail;
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if (!check_extensions(sf, "akb"))
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goto fail;
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version = read_u8(0x04,sf); /* 00=TWEWY, 02=DQs, 03=FFAgito */
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/* 0x05(1); unused? */
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header_size = read_u16le(0x06,sf);
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if (read_u32le(0x08,sf) != get_streamfile_size(sf))
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goto fail;
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/* material info, though can only hold 1 */
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codec = read_u8(0x0c,sf);
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channels = read_u8(0x0d,sf);
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sample_rate = read_u16le(0x0e,sf);
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num_samples = read_s32le(0x10,sf);
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loop_start = read_s32le(0x14,sf);
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loop_end = read_s32le(0x18,sf);
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/* possibly more complex, see AKB2 */
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if (header_size >= 0x44) { /* v2+ */
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extradata_size = read_u16le(0x1c,sf);
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/* 0x20+: config? (pan, volume) */
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subheader_size = read_u16le(0x28,sf);
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/* 0x24: file_id? */
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/* 0x28: */
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/* 0x29: */
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/* 0x2a: */
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/* flags:
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* 1: (v2+) enable random volume
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* 2: (v2+) enable random pitch
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* 4: (v2+) enable random pan
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* 8: (v3+) encryption (for MS-ADPCM / Ogg) [Final Fantasy Agito (Android)-ogg bgm only, other sounds don't use AKB] */
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flags = read_u8(0x2B,sf);
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/* 0x2c: max random volume */
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/* 0x30: min random volume */
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/* 0x34: max random pitch */
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/* 0x38: min random pitch */
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/* 0x3c: max random pan */
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/* 0x40: min random pan */
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extradata_offset = header_size + subheader_size;
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start_offset = extradata_offset + extradata_size;
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}
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else { /* v0 */
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start_offset = header_size;
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}
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stream_size = get_streamfile_size(sf) - start_offset;
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loop_flag = (loop_end > loop_start);
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channels, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_AKB;
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vgmstream->sample_rate = sample_rate;
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switch (codec) {
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case 0x02: { /* MSADPCM [Dragon Quest II (iOS) sfx] */
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vgmstream->coding_type = coding_MSADPCM;
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vgmstream->layout_type = layout_none;
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vgmstream->frame_size = read_u16le(extradata_offset + 0x02,sf);
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/* encryption, untested but should be the same as Ogg */
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if (version >= 3 && (flags & 8))
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goto fail;
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/* adjusted samples; bigger or smaller than base samples, akb lib uses these fields instead
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* (base samples may have more than possible and read over file size otherwise, very strange)
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* loop_end seems to exist even with loop disabled */
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vgmstream->num_samples = read_s32le(extradata_offset + 0x04, sf);
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vgmstream->loop_start_sample = read_s32le(extradata_offset + 0x08, sf);
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vgmstream->loop_end_sample = read_s32le(extradata_offset + 0x0c, sf);
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break;
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}
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#ifdef VGM_USE_VORBIS
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case 0x05: { /* Ogg Vorbis [Final Fantasy VI (iOS), Dragon Quest II-VI (iOS)] */
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STREAMFILE* temp_sf;
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VGMSTREAM *ogg_vgmstream = NULL;
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ogg_vorbis_meta_info_t ovmi = {0};
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ovmi.meta_type = vgmstream->meta_type;
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ovmi.stream_size = stream_size;
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/* extradata + 0x04: Ogg loop start offset */
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/* oggs have loop info in the comments */
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/* enable encryption */
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if (version >= 3 && (flags & 8)) {
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temp_sf = setup_sqex_streamfile(sf, start_offset, stream_size, 1, 0x00, 0x00, "ogg");
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if (!temp_sf) goto fail;
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ogg_vgmstream = init_vgmstream_ogg_vorbis_config(temp_sf, 0x00, &ovmi);
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close_streamfile(temp_sf);
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}
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else {
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ogg_vgmstream = init_vgmstream_ogg_vorbis_config(sf, start_offset, &ovmi);
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}
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if (ogg_vgmstream) {
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close_vgmstream(vgmstream);
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return ogg_vgmstream;
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}
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else {
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goto fail;
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}
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break;
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}
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#elif defined(VGM_USE_FFMPEG)
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/* Alt decoding without libvorbis (minor number of beginning samples difference).
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* Otherwise same output with (inaudible) +-1 lower byte differences due to rounding. */
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case 0x05: { /* Ogg Vorbis [Final Fantasy VI (iOS), Dragon Quest II-VI (iOS)] */
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vgmstream->codec_data = init_ffmpeg_offset(sf, start_offset,stream_size);
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if (!vgmstream->codec_data) goto fail;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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/* These oggs have loop info in the comments, too */
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vgmstream->num_samples = num_samples;
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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break;
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}
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#endif
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#ifdef VGM_USE_FFMPEG
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case 0x06: { /* M4A with AAC [The World Ends with You (iPad)] */
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vgmstream->codec_data = init_ffmpeg_offset(sf, start_offset,stream_size-start_offset);
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if (!vgmstream->codec_data) goto fail;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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vgmstream->num_samples = num_samples;
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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/* bad total samples (some kind of duration? probably should be loop_end though) */
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if (loop_flag)
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vgmstream->num_samples = loop_end+1;
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/* loops are pre-adjusted with 2112 encoder delay (ex. TWEWY B04's loop_start=45) */
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break;
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}
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#endif
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case 0x01: /* PCM16LE (from debugging, not seen) */
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default:
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goto fail;
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}
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/* open the file for reading */
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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/* AKB2 - found in later SQEX 'sdlib' iOS/Android games */
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VGMSTREAM* init_vgmstream_akb2(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset, material_offset, extradata_offset;
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size_t material_size, extradata_size, stream_size;
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int loop_flag = 0, channel_count, flags, codec, sample_rate, num_samples, loop_start, loop_end;
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int total_subsongs, target_subsong = sf->stream_index;
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/* checks */
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if (!is_id32be(0x00,sf, "AKB2"))
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goto fail;
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if (!check_extensions(sf, "akb"))
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goto fail;
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/* 0x04: version */
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if (read_u32le(0x08,sf) != get_streamfile_size(sf))
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goto fail;
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/* parse tables */
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{
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off_t table_offset;
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size_t table_size, entry_size;
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off_t akb_header_size = read_u16le(0x06, sf);
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int table_count = read_u8(0x0c, sf);
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/* probably each table has its type somewhere, but only seen last table = sound table */
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if (table_count > 2) /* 2 only seen in some Mobius FF sound banks */
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goto fail;
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entry_size = 0x10; /* technically every entry/table has its own size but to simplify... */
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table_offset = read_u32le(akb_header_size + (table_count-1)*entry_size + 0x04, sf);
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table_size = read_u16le(table_offset + 0x02, sf);
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total_subsongs = read_u8(table_offset + 0x0f, sf); /* can contain 0 entries too */
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if (target_subsong == 0) target_subsong = 1;
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if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
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material_offset = table_offset + read_u32le(table_offset + table_size + (target_subsong-1)*entry_size + 0x04, sf);
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}
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/** stream header (material) **/
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/* 0x00: 0? */
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codec = read_u8(material_offset+0x01,sf);
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channel_count = read_u8(material_offset+0x02,sf);
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flags = read_u8(material_offset+0x03,sf);
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material_size = read_u16le(material_offset+0x04,sf);
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sample_rate = read_u16le(material_offset+0x06,sf);
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stream_size = read_u32le(material_offset+0x08,sf);
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num_samples = read_s32le(material_offset+0x0c,sf);
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loop_start = read_s32le(material_offset+0x10,sf);
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loop_end = read_s32le(material_offset+0x14,sf);
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extradata_size = read_u32le(material_offset+0x18,sf);
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/* rest: ? (empty, floats or 0x3f80) */
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loop_flag = (loop_end > loop_start);
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extradata_offset = material_offset + material_size;
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start_offset = material_offset + material_size + extradata_size;
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/* encrypted, not seen (see AKB flags) */
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if (flags & 0x08)
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goto fail;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count,loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_streams = total_subsongs;
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vgmstream->stream_size = stream_size;
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vgmstream->meta_type = meta_AKB;
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switch (codec) {
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case 0x01: /* PCM16LE [Mobius: Final Fantasy (Android)] */
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x02;
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vgmstream->num_samples = num_samples;
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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break;
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case 0x02: { /* MSADPCM [The Irregular at Magic High School Lost Zero (Android)] */
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vgmstream->coding_type = coding_MSADPCM;
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vgmstream->layout_type = layout_none;
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vgmstream->frame_size = read_u16le(extradata_offset + 0x02, sf);
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/* adjusted samples; bigger or smaller than base samples, akb lib uses these fields instead
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* (base samples may have more than possible and read over file size otherwise, very strange)
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* loop_end seems to exist even with loop disabled */
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vgmstream->num_samples = read_s32le(extradata_offset + 0x04, sf);
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vgmstream->loop_start_sample = read_s32le(extradata_offset + 0x08, sf);
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vgmstream->loop_end_sample = read_s32le(extradata_offset + 0x0c, sf);
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break;
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}
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#ifdef VGM_USE_VORBIS
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case 0x05: { /* Ogg Vorbis [The World Ends with You (iOS / latest update)] */
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VGMSTREAM *ogg_vgmstream = NULL;
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ogg_vorbis_meta_info_t ovmi = {0};
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ovmi.meta_type = vgmstream->meta_type;
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ovmi.total_subsongs = total_subsongs;
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ovmi.stream_size = stream_size;
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ogg_vgmstream = init_vgmstream_ogg_vorbis_config(sf, start_offset, &ovmi);
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if (ogg_vgmstream) {
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ogg_vgmstream->num_streams = vgmstream->num_streams;
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ogg_vgmstream->stream_size = vgmstream->stream_size;
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close_vgmstream(vgmstream);
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return ogg_vgmstream;
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}
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else {
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goto fail;
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}
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break;
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}
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#elif defined(VGM_USE_FFMPEG)
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/* Alt decoding without libvorbis (minor number of beginning samples difference).
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* Otherwise same output with (inaudible) +-1 lower byte differences due to rounding. */
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case 0x05: { /* Ogg Vorbis [The World Ends with You (iOS / latest update)] */
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ffmpeg_codec_data *ffmpeg_data;
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ffmpeg_data = init_ffmpeg_offset(sf, start_offset,stream_size);
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if ( !ffmpeg_data ) goto fail;
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vgmstream->codec_data = ffmpeg_data;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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/* When loop_flag num_samples may be much larger than real num_samples (it's fine when looping is off)
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* Actual num_samples would be loop_end_sample+1, but more testing is needed */
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vgmstream->num_samples = read_s32le(material_offset+0x0c,sf);//num_samples;
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vgmstream->loop_start_sample = read_s32le(material_offset+0x10,sf);//loop_start;
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vgmstream->loop_end_sample = loop_end;
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break;
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}
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#endif
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default:
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goto fail;
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}
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/* open the file for reading */
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if ( !vgmstream_open_stream(vgmstream, sf, start_offset) )
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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