#include "meta.h" #include "../coding/coding.h" #include "../util/endianness.h" /* FWAV and CWAV are basically identical except always LE */ typedef enum { FWAV, CWAV } bxwav_type_t; static VGMSTREAM* init_vgmstream_bxwav(STREAMFILE* sf, bxwav_type_t type); /* FWAV - NintendoWare binary caFe wave (WiiU and Switch games) */ VGMSTREAM* init_vgmstream_bfwav(STREAMFILE* sf) { /* checks */ if (!is_id32be(0x00, sf, "FWAV")) goto fail; /* .bfwav: used? * .fwav: header id */ if (!check_extensions(sf, "bfwav,fwav")) goto fail; return init_vgmstream_bxwav(sf, FWAV); fail: return NULL; } /* CWAV - NintendoWare binary CTR wave (3DS games) */ VGMSTREAM* init_vgmstream_bcwav(STREAMFILE* sf) { /* checks */ if (!is_id32be(0x00, sf, "CWAV")) goto fail; /* .bcwav: standard 3DS (though rare as usually found in .bcsar) [Adventure Bar Story (3DS), LBX (3DS)] * .adpcm: 80's Overdrive (3DS) * .bms: 3D Classics Kirby's Adventure (3DS) * .sfx: Wizdom (3DS) * .str: Pac-Man and the Ghostly Adventures 2 (3DS) * .zic: Wizdom (3DS) */ if (!check_extensions(sf, "bcwav,adpcm,bms,sfx,str,zic")) goto fail; return init_vgmstream_bxwav(sf, CWAV); fail: return NULL; } static VGMSTREAM* init_vgmstream_bxwav(STREAMFILE* sf, bxwav_type_t type) { VGMSTREAM* vgmstream = NULL; uint32_t info_offset, data_offset, chtb_offset; int channels, loop_flag, codec, sample_rate; int big_endian; int32_t num_samples, loop_start; read_u32_t read_u32; read_s32_t read_s32; read_u16_t read_u16; read_s16_t read_s16; /* BOM check */ if (read_u16be(0x04, sf) == 0xFEFF) { /* WiiU */ big_endian = 1; read_u32 = read_u32be; read_s32 = read_s32be; read_u16 = read_u16be; read_s16 = read_s16be; } else if (read_u16le(0x04, sf) == 0xFEFF) { /* 3DS, Switch */ big_endian = 0; read_u32 = read_u32le; read_s32 = read_s32le; read_u16 = read_u16le; read_s16 = read_s16le; } else { goto fail; } /* header */ /* 0x06(2): header size (0x40) */ /* 0x08: version */ /* - FWAV: 0x00010200 */ /* - CWAV: 0x00000002 (Kirby's Adventure), 0x00000102 (common), 0x00010102 (FE Fates, Hyrule Warriors Legends) */ /* 0x0c: file size */ /* 0x10(2): sections (2) */ /* 0x14(2): info mark (0x7000) */ info_offset = read_u32(0x18, sf); /* 0x1c: info size */ /* 0x20(2): data mark (0x7001) */ data_offset = read_u32(0x24, sf); /* 0x28: data size */ /* rest: padding */ /* INFO section */ if (!is_id32be(info_offset + 0x00, sf, "INFO")) goto fail; /* 0x04: size */ codec = read_u8(info_offset + 0x08, sf); loop_flag = read_u8(info_offset + 0x09, sf); /* 0x0a: padding */ sample_rate = read_u32(info_offset + 0x0C, sf); loop_start = read_s32(info_offset + 0x10, sf); num_samples = read_s32(info_offset + 0x14, sf); /* 0x18: original loop start? (slightly lower) */ chtb_offset = info_offset + 0x1C; channels = read_u32(chtb_offset + 0x00, sf); /* channel table is parsed at the end */ /* DATA section */ if (!is_id32be(data_offset + 0x00, sf, "DATA")) goto fail; /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channels, loop_flag); if (!vgmstream) goto fail; switch(type) { case FWAV: vgmstream->meta_type = meta_FWAV; break; case CWAV: vgmstream->meta_type = meta_CWAV; break; default: goto fail; } vgmstream->sample_rate = sample_rate; vgmstream->num_samples = num_samples; vgmstream->loop_start_sample = loop_start; vgmstream->loop_end_sample = num_samples; if (type == CWAV) vgmstream->allow_dual_stereo = 1; /* LEGO 3DS games */ vgmstream->layout_type = layout_none; /* only 0x02 is known, other codecs are probably from bxstm that do use them */ switch (codec) { case 0x00: vgmstream->coding_type = coding_PCM8; break; case 0x01: vgmstream->coding_type = big_endian ? coding_PCM16BE : coding_PCM16LE; break; case 0x02: /* common */ vgmstream->coding_type = coding_NGC_DSP; /* coefs are read below */ break; case 0x03: vgmstream->coding_type = coding_3DS_IMA; /* hist is read below */ break; default: goto fail; } if (!vgmstream_open_stream_bf(vgmstream, sf, data_offset, 1)) goto fail; /* parse channel table and offsets * (usually the interleave/distance is fixed, but in theory could be non-standard, so assign manually) */ { int ch, i; for (ch = 0; ch < channels; ch++) { uint32_t chnf_offset, chdt_offset; /* channel entry: */ /* - 0x00: mark (0x7100) */ /* - 0x02: padding */ /* - 0x04: channel info offset (from channel table offset) */ chnf_offset = read_u32(chtb_offset + 0x04 + ch * 0x08 + 0x04, sf) + chtb_offset; /* channel info: */ /* 0x00: mark (0x1F00) */ /* 0x02: padding */ /* 0x04: offset to channel data (from DATA offset after size ) */ /* 0x08: ADPCM mark (0x0300=DSP, 0x0301=IMA, 0x0000=none) */ /* 0x0a: padding */ /* 0x0c: ADPCM offset (from channel info offset), 0xFFFFFFFF otherwise */ /* 0x10: null? */ if (read_u16(chnf_offset + 0x00, sf) != 0x1F00) goto fail; chdt_offset = read_u32(chnf_offset + 0x04, sf) + data_offset + 0x08; vgmstream->ch[ch].channel_start_offset = chdt_offset; vgmstream->ch[ch].offset = chdt_offset; switch(codec) { case 0x02: { /* standard DSP coef + predictor + hists + loop predictor + loop hists */ uint32_t coef_offset = read_u32(chnf_offset + 0x0c, sf) + chnf_offset; for (i = 0; i < 16; i++) { vgmstream->ch[ch].adpcm_coef[i] = read_s16(coef_offset + 0x00 + i*0x02, sf); } vgmstream->ch[ch].adpcm_history1_16 = read_s16(coef_offset + 0x22, sf); vgmstream->ch[ch].adpcm_history2_16 = read_s16(coef_offset + 0x24, sf); break; } case 0x03: { /* hist + step */ uint32_t coef_offset = read_u32(chnf_offset + 0x0c, sf) + chnf_offset; vgmstream->ch[ch].adpcm_history1_16 = read_s16(coef_offset + 0x00, sf); vgmstream->ch[ch].adpcm_step_index = read_s16(coef_offset + 0x02, sf); break; } default: break; } } } return vgmstream; fail: close_vgmstream(vgmstream); return NULL; }