vgmstream/src/meta/wavebatch.c
2021-07-29 23:41:27 +02:00

136 lines
4.5 KiB
C

#include "meta.h"
#include "../coding/coding.h"
/* WBAT - Firebrand Games header [Need for Speed: The Run (3DS), Fast & Furious: Showdown (3DS)] */
VGMSTREAM * init_vgmstream_wavebatch(STREAMFILE *sf) {
VGMSTREAM * vgmstream = NULL;
off_t start_offset, name_offset, offset, stream_offset;
size_t names_size, stream_size;
int loop_flag, channel_count, sample_rate, num_samples;
int big_endian, version, codec;
int total_subsongs, target_subsong = sf->stream_index;
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
/* checks */
if (!check_extensions(sf, "wavebatch"))
goto fail;
if (!is_id32be(0x00,sf, "TABW"))
goto fail;
/* section0: base header */
big_endian = (read_u16be(0x04,sf) == 0xFEFF); /* BOM (always LE on 3DS/Android) */
if (big_endian) {
read_32bit = read_32bitBE;
read_16bit = read_16bitBE;
} else {
read_32bit = read_32bitLE;
read_16bit = read_16bitLE;
}
version = read_16bit(0x06, sf); /* assumed */
if (version != 0x06 && version != 0x07) /* v6 = NFS: The Run , v7 = F&F Showndown */
goto fail;
total_subsongs = read_32bit(0x08,sf);
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
names_size = read_32bit(0x0c,sf);
/* 0x10/14: see below */
/* 0x18: data size (all subsongs) */
offset = 0x1c + names_size; /* skip names table */
/* the following 2 sections (rarely) won't match total_subsongs */
/* section1: unknown */
{
size_t unknown_size = read_32bit(0x10,sf);
/* 0x00: usually 0, rarely 0x20? */
offset += unknown_size*0x04;
}
/* section2: samples */
{
size_t samples_size = read_32bit(0x14,sf);
/* 0x00: num_samples */
offset += samples_size*0x04;
}
/* section3: headers */
{
off_t header_offset = offset+(target_subsong-1)*0x24;
name_offset = read_32bit(header_offset+0x00, sf) + 0x1c; /* within name table */
codec = read_32bit(header_offset+0x04, sf);
sample_rate = read_32bit(header_offset+0x08, sf);
channel_count = read_32bit(header_offset+0x0c, sf);
/* 0x10: index within section1/2? */
/* 0x14: flags? 0x01 or (rarely) 0x02 */
stream_offset = read_32bit(header_offset+0x18, sf);
stream_size = read_32bit(header_offset+0x1c, sf); /* including DSP config */
num_samples = read_32bit(header_offset+0x20, sf) / channel_count; /* nibble/PCMs */
offset += total_subsongs*0x24;
}
loop_flag = 0;
start_offset = offset + stream_offset;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count, loop_flag);
if (!vgmstream) goto fail;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = num_samples;
vgmstream->num_streams = total_subsongs;
vgmstream->stream_size = stream_size;
vgmstream->meta_type = meta_WAVEBATCH;
switch(codec) {
case 0x00: /* PCM16 [NASCAR Unleashed (3DS), Solar Flux Pocket (Android)] */
vgmstream->coding_type = big_endian ? coding_PCM16BE : coding_PCM16LE;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x02;
break;
case 0x01: /* PCM8 [Cars 2 (3DS)] */
vgmstream->coding_type = coding_PCM8;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x01;
break;
case 0x02: { /* DSP [WRC FIA World Rally Championship (3DS)] */
size_t config_size = (0x20+0x14)*channel_count + (0x0c)*channel_count; /* coefs+hist + padding */
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = (stream_size - config_size) / channel_count; /* full interleave*/;
dsp_read_coefs(vgmstream,sf,start_offset+0x00,0x20+0x14,big_endian);
dsp_read_hist (vgmstream,sf,start_offset+0x20,0x14+0x20,big_endian);
start_offset += config_size;
break;
}
default:
VGM_LOG("WAVEBATCH: unknown codec %x\n", codec);
goto fail;
}
read_string(vgmstream->stream_name,STREAM_NAME_SIZE, name_offset,sf); /* always null-terminated */
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}