mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 09:55:53 +01:00
227 lines
7.8 KiB
C
227 lines
7.8 KiB
C
#include "meta.h"
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#include "../util.h"
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#include "../coding/coding.h"
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/* RXWS - from Sony SCEI PS2 games (Okage: Shadow King, Genji, Bokura no Kazoku) */
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VGMSTREAM* init_vgmstream_rxws(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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STREAMFILE* sh = NULL;
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off_t start_offset, chunk_offset, name_offset = 0;
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size_t stream_size, chunk_size;
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int loop_flag = 0, channels, is_separate = 0, type, sample_rate;
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int32_t num_samples, loop_start;
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int total_subsongs, target_subsong = sf->stream_index;
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/* checks */
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/* .xws: header and data
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* .xwh+xwb: header + data (.bin+dat are also found in Wild Arms 4/5) */
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if (!check_extensions(sf,"xws,xwb"))
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goto fail;
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is_separate = check_extensions(sf,"xwb");
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/* xwh+xwb: use xwh as header; otherwise use the current file */
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if (is_separate) {
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/* extra check to reject Microsoft's XWB faster */
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if (is_id32be(0x00,sf,"WBND") || /* (LE) */
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is_id32be(0x00,sf,"DNBW")) /* (BE) */
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goto fail;
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sh = open_streamfile_by_ext(sf, "xwh");
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if (!sh) goto fail;
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} else {
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sh = sf;
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}
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if (!is_id32be(0x00,sh,"RXWS"))
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goto fail;
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/* file size (just the .xwh/xws) */
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if (read_u32le(0x04,sh) + 0x10 != get_streamfile_size(sh))
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goto fail;
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/* 0x08: version (0x100/0x200)
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* 0x0C: null */
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/* typical chunks: FORM, FTXT, MARK, BODY (for .xws) */
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if (!is_id32be(0x10,sh,"FORM")) /* main header (always first) */
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goto fail;
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chunk_size = read_u32le(0x10+0x04,sh); /* size - 0x10 */
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/* 0x08 version (0x100), 0x0c: null */
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chunk_offset = 0x20;
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/* check multi-streams */
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total_subsongs = read_s32le(chunk_offset+0x00,sh);
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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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/* read stream header */
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{
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off_t header_offset = chunk_offset + 0x4 + 0x1c * (target_subsong-1); /* position in FORM */
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off_t stream_offset, next_stream_offset, data_offset = 0;
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type = read_u8(header_offset+0x00, sh);
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/* 0x01: unknown (always 0x1c) */
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/* 0x02: flags? (usually 8002/0002, & 0x01 if looped) */
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/* 0x04: vol/pan stuff? (0x00007F7F) */
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/* 0x08: null? */
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channels = read_u8(header_offset+0x09, sh);
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/* 0x0c: null? */
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sample_rate = read_u16le(header_offset+0x0a,sh);
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stream_offset = read_u32le(header_offset+0x10,sh);
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num_samples = read_s32le(header_offset+0x14,sh);
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loop_start = read_s32le(header_offset+0x18,sh);
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loop_flag = (loop_start >= 0);
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/* find data start and size */
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if (is_separate) {
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data_offset = 0x00;
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}
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else {
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off_t current_chunk = 0x10;
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/* note the extra 0x10 in chunk_size/offsets */
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while (current_chunk < get_streamfile_size(sf)) {
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if (is_id32be(current_chunk,sf, "BODY")) {
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data_offset = 0x10 + current_chunk;
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break;
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}
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current_chunk += 0x10 + read_u32le(current_chunk+4,sf);
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}
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if (!data_offset) goto fail;
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}
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if (target_subsong == total_subsongs) {
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next_stream_offset = get_streamfile_size(is_separate ? sf : sh) - data_offset;
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} else {
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off_t next_header_offset = chunk_offset + 0x4 + 0x1c * (target_subsong);
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next_stream_offset = read_u32le(next_header_offset+0x10,sh);
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}
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stream_size = next_stream_offset - stream_offset;
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start_offset = data_offset + stream_offset;
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}
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/* get stream name (always follows FORM) */
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if (is_id32be(0x10+0x10 + chunk_size,sh, "FTXT")) {
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chunk_offset = 0x10+0x10 + chunk_size + 0x10;
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if (read_s32le(chunk_offset+0x00,sh) == total_subsongs) {
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name_offset = chunk_offset + read_u32le(chunk_offset+0x04 + (target_subsong-1)*0x04,sh);
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}
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}
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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_RXWS;
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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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if (name_offset)
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read_string(vgmstream->stream_name,STREAM_NAME_SIZE, name_offset,sh);
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switch (type) {
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case 0x00: /* PS-ADPCM */
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10;
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vgmstream->num_samples = ps_bytes_to_samples(num_samples, channels);
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vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start, channels);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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break;
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case 0x01: /* PCM */
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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 = 0x2;
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vgmstream->num_samples = pcm_bytes_to_samples(num_samples, channels, 16);
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vgmstream->loop_start_sample = pcm_bytes_to_samples(loop_start, channels, 16);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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break;
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#ifdef VGM_USE_FFMPEG
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case 0x02: { /* ATRAC3 */
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int block_align, encoder_delay;
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block_align = 0xc0 * channels;
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encoder_delay = 1024 + 69*2; /* observed default */
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vgmstream->num_samples = num_samples - encoder_delay;
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vgmstream->codec_data = init_ffmpeg_atrac3_raw(sf, start_offset,stream_size, vgmstream->num_samples,vgmstream->channels,vgmstream->sample_rate, block_align, encoder_delay);
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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->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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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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if (is_separate && sh) close_streamfile(sh);
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return vgmstream;
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fail:
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if (is_separate && sh) close_streamfile(sh);
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close_vgmstream(vgmstream);
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return NULL;
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}
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/* .RXW - legacy fake ext/header for poorly split XWH+XWB files generated by old tools (incorrect header/chunk sizes) */
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VGMSTREAM* init_vgmstream_rxws_badrip(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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int loop_flag=0, channels;
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off_t start_offset;
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/* check extension, case insensitive */
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if (!check_extensions(sf,"rxw"))
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goto fail;
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/* check RXWS/FORM Header */
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if (!((read_32bitBE(0x00,sf) == 0x52585753) &&
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(read_32bitBE(0x10,sf) == 0x464F524D)))
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goto fail;
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loop_flag = (read_u32le(0x3C,sf)!=0xFFFFFFFF);
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channels=2; /* Always stereo files */
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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->sample_rate = read_32bitLE(0x2E,sf);
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vgmstream->num_samples = (read_32bitLE(0x38,sf)*28/16)/2;
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/* Get loop point values */
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if(vgmstream->loop_flag) {
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vgmstream->loop_start_sample = read_32bitLE(0x3C,sf)/16*14;
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vgmstream->loop_end_sample = read_32bitLE(0x38,sf)/16*14;
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}
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vgmstream->interleave_block_size = read_32bitLE(0x1c,sf)+0x10;
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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vgmstream->meta_type = meta_RXWS;
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start_offset = 0x40;
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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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