#include "meta.h" #include "../util.h" #include "../coding/coding.h" /* RXWS - from Sony SCEI games [Okage: Shadow King (PS2), Genji (PS2), Bokura no Kazoku (PS2))] */ VGMSTREAM* init_vgmstream_rxws(STREAMFILE* sf) { VGMSTREAM* vgmstream = NULL; STREAMFILE* sf_head = NULL; STREAMFILE* sf_body = NULL; off_t start_offset, chunk_offset, name_offset = 0; size_t stream_size, chunk_size; int loop_flag = 0, channels, is_xwh = 0, type, sample_rate; int32_t num_samples, loop_start; int total_subsongs, target_subsong = sf->stream_index; /* for plugins that start with .xwb */ if (check_extensions(sf,"xwb")) { /* extra check to reject Microsoft's XWB faster */ if (is_id32be(0x00,sf,"WBND") || is_id32be(0x00,sf,"DNBW")) /* LE/BE */ goto fail; sf_head = open_streamfile_by_ext(sf, "xwh"); if (!sf_head) goto fail; } else { sf_head = sf; } if (!is_id32be(0x00,sf_head,"RXWS")) goto fail; /* checks */ /* .xws: header and data * .xwh+xwb: header + data (.bin+dat are also found in Wild Arms 4/5) */ if (!check_extensions(sf,"xws,xwb")) goto fail; /* file size (just the .xwh/xws) */ if (read_u32le(0x04,sf_head) + 0x10 != get_streamfile_size(sf_head)) goto fail; /* 0x08: version (0x100/0x200) * 0x0C: null */ /* typical chunks: FORM, FTXT, MARK, BODY (for .xws) */ if (!is_id32be(0x10,sf_head,"FORM")) /* main header (always first) */ goto fail; chunk_size = read_u32le(0x10+0x04,sf_head); /* size - 0x10 */ /* 0x08 version (0x100), 0x0c: null */ chunk_offset = 0x20; /* check multi-streams */ total_subsongs = read_s32le(chunk_offset+0x00,sf_head); if (target_subsong == 0) target_subsong = 1; if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail; /* read stream header */ { off_t header_offset = chunk_offset + 0x4 + 0x1c * (target_subsong-1); /* position in FORM */ off_t stream_offset, next_stream_offset, body_offset; type = read_u8(header_offset+0x00, sf_head); /* 0x01: unknown (always 0x1c) */ /* 0x02: flags? (usually 8002/0002, & 0x01 if looped) */ /* 0x04: vol/pan stuff? (0x00007F7F) */ /* 0x08: null? */ channels = read_u8(header_offset+0x09, sf_head); sample_rate = read_u16le(header_offset+0x0a,sf_head); /* 0x0c: null? */ stream_offset = read_u32le(header_offset+0x10,sf_head); num_samples = read_s32le(header_offset+0x14,sf_head); loop_start = read_s32le(header_offset+0x18,sf_head); loop_flag = (loop_start >= 0); /* find body start and size (needed for stream_size) */ { uint32_t current_chunk = 0x10; body_offset = 0x00; while (current_chunk < get_streamfile_size(sf_head)) { if (is_id32be(current_chunk,sf_head, "BODY")) { body_offset = 0x10 + current_chunk; is_xwh = 1; break; } /* note the extra 0x10 in chunk_size/offsets */ current_chunk += 0x10 + read_u32le(current_chunk + 0x04,sf_head); } /* .xwh and .xws are only different in that the latter has BODY chunk (no flags/sizes) */ is_xwh = !body_offset; /* for plugins that start with .xwh (and don't check extensions) */ if (is_xwh && sf == sf_head) { sf_body = open_streamfile_by_ext(sf, "xwb"); if (!sf_body) goto fail; } else { sf_body = sf; } } if (target_subsong == total_subsongs) { uint32_t max_size = get_streamfile_size(sf_body); next_stream_offset = max_size - body_offset; } else { off_t next_header_offset = chunk_offset + 0x4 + 0x1c * (target_subsong); next_stream_offset = read_u32le(next_header_offset+0x10, sf_head); } stream_size = next_stream_offset - stream_offset; start_offset = body_offset + stream_offset; } /* get stream name (always follows FORM) */ if (is_id32be(0x10+0x10 + chunk_size,sf_head, "FTXT")) { chunk_offset = 0x10+0x10 + chunk_size + 0x10; if (read_s32le(chunk_offset+0x00,sf_head) == total_subsongs) { name_offset = chunk_offset + read_u32le(chunk_offset+0x04 + (target_subsong-1)*0x04,sf_head); } } /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channels, loop_flag); if (!vgmstream) goto fail; vgmstream->meta_type = meta_RXWS; vgmstream->sample_rate = sample_rate; vgmstream->num_streams = total_subsongs; vgmstream->stream_size = stream_size; if (name_offset) read_string(vgmstream->stream_name,STREAM_NAME_SIZE, name_offset, sf_head); switch (type) { case 0x00: /* PS-ADPCM */ vgmstream->coding_type = coding_PSX; vgmstream->layout_type = layout_interleave; vgmstream->interleave_block_size = 0x10; vgmstream->num_samples = ps_bytes_to_samples(num_samples, channels); vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start, channels); vgmstream->loop_end_sample = vgmstream->num_samples; break; case 0x01: /* PCM */ vgmstream->coding_type = coding_PCM16LE; vgmstream->layout_type = layout_interleave; vgmstream->interleave_block_size = 0x2; vgmstream->num_samples = pcm_bytes_to_samples(num_samples, channels, 16); vgmstream->loop_start_sample = pcm_bytes_to_samples(loop_start, channels, 16); vgmstream->loop_end_sample = vgmstream->num_samples; break; #ifdef VGM_USE_FFMPEG case 0x02: { /* ATRAC3 */ int block_align, encoder_delay; block_align = 0xc0 * channels; encoder_delay = 1024 + 69*2; /* observed default */ vgmstream->num_samples = num_samples - encoder_delay; vgmstream->codec_data = init_ffmpeg_atrac3_raw(sf_body, start_offset,stream_size, vgmstream->num_samples,vgmstream->channels,vgmstream->sample_rate, block_align, encoder_delay); if (!vgmstream->codec_data) goto fail; vgmstream->coding_type = coding_FFmpeg; vgmstream->layout_type = layout_none; vgmstream->loop_start_sample = loop_start; vgmstream->loop_end_sample = vgmstream->num_samples; break; } #endif default: goto fail; } /* open the file for reading */ if (!vgmstream_open_stream(vgmstream, sf_body, start_offset)) goto fail; if (sf != sf_head) close_streamfile(sf_head); if (sf != sf_body) close_streamfile(sf_body); return vgmstream; fail: if (sf != sf_head) close_streamfile(sf_head); if (sf != sf_body) close_streamfile(sf_body); close_vgmstream(vgmstream); return NULL; }