#include "meta.h" #include "../layout/layout.h" #include "../coding/coding.h" /* SWVR - from EA games, demuxed from .av/trk/mis/etc [Future Cop L.A.P.D. (PS/PC), Freekstyle (PS2/GC), EA Sports Supercross (PS)] */ VGMSTREAM* init_vgmstream_ea_swvr(STREAMFILE* sf) { VGMSTREAM * vgmstream = NULL; off_t start_offset; int loop_flag = 0, channels, sample_rate, big_endian; coding_t coding; uint32_t block_id; int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL; int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL; int total_subsongs, target_subsong = sf->stream_index; /* checks */ /* .stream: common (found inside files) * .str: shortened, probably unnecessary */ if (!check_extensions(sf,"stream,str")) goto fail; /* Files have no actual audio headers, so we inspect the first block for known values. * Freekstyle uses multiblocks/subsongs (though some subsongs may be clones?) */ /* blocks ids are in machine endianness */ if (read_u32be(0x00,sf) == get_id32be("RVWS")) { /* PS1/PS2/PC */ big_endian = 0; read_32bit = read_32bitLE; read_16bit = read_16bitLE; start_offset = read_32bit(0x04, sf); } else if (read_u32be(0x00,sf) == get_id32be("SWVR")) { /* GC */ big_endian = 1; read_32bit = read_32bitBE; read_16bit = read_16bitBE; start_offset = read_32bit(0x04, sf); } else if (read_u32be(0x00,sf) == get_id32be("MGAV")) { /* Freekstyle (PS2) raw movies */ big_endian = 0; read_32bit = read_32bitLE; read_16bit = read_16bitLE; start_offset = 0x00; } else if (read_u32be(0x00,sf) == get_id32be("DSPM")) { /* Freekstyle (GC) raw movies */ big_endian = 1; read_32bit = read_32bitBE; read_16bit = read_16bitBE; start_offset = 0x00; } else { goto fail; } if (read_32bit(start_offset+0x00, sf) == get_id32be("PADD")) /* Freekstyle */ start_offset += read_32bit(start_offset+0x04, sf); if (read_32bit(start_offset+0x00, sf) == get_id32be("FILL")) /* Freekstyle */ start_offset += read_32bit(start_offset+0x04, sf); total_subsongs = 1; block_id = read_32bit(start_offset, sf); /* value after block id (usually at 0x38) is number of blocks of 0x6000 (results in file size, including FILLs) */ /* intended sample rate for PSX music (verified in emus) should be 14260, but is found in ELF as pitch value * (ex. Nascar Rumble 0x052C in SLUS_010.68 at 0x000143BC): 0x052C * 44100 / 4096 ~= 14254.98046875hz * Future Cop PSX pitch looks similar (comparing vs recordings). */ switch(block_id) { case 0x5641474D: /* "VAGM" (stereo music) */ coding = coding_PSX; if (read_16bit(start_offset+0x1a, sf) == 0x0024) { total_subsongs = read_32bit(start_offset+0x0c, sf)+1; sample_rate = 22050; /* Freekstyle (PS2) */ } else { sample_rate = 1324 * 44100 / 4096; /* ~14254 [Future Cop (PS1), Nascar Rumble (PS1), EA Sports Motocross (PS1)] */ } channels = 2; break; case 0x56414742: /* "VAGB" (mono sfx/voices)*/ coding = coding_PSX; if (read_16bit(start_offset+0x1a, sf) == 0x6400) { sample_rate = 22050; /* Freekstyle (PS2) */ } else { /* approximate as pitches vary per file (ex. Nascar Rumble: engine=3779, heli=22050, commentary=11050) */ sample_rate = 1080 * 44100 / 4096; /* ~11627 [EA Sports Motocross (PS1)] */ } channels = 1; break; case 0x4453504D: /* "DSPM" (stereo music) */ coding = coding_NGC_DSP; total_subsongs = read_32bit(start_offset+0x0c, sf)+1; sample_rate = 22050; /* Freekstyle (GC) */ channels = 2; break; case 0x44535042: /* "DSPB" (mono voices/sfx) */ coding = coding_NGC_DSP; channels = 1; sample_rate = 22050; /* Freekstyle (GC) */ break; case 0x4D534943: /* "MSIC" (stereo music) */ coding = coding_PCM8_U_int; channels = 2; sample_rate = 14291; /* assumed, by comparing vs PSX output [Future Cop (PC)] */ break; case 0x53484F43: /* "SHOC" (a generic block but hopefully has PC sounds) */ if (read_32bit(start_offset+0x10, sf) == get_id32be("SHDR")) { /* Future Cop (PC) */ /* there is a mini header? after SHDR * 0x00: 5 * 0x04: "snds" * 0x08: channels? * 0x0c: data size without blocks/padding * 0x10: null * 0x14: null * 0x18: null * 0x1c: 1 * 0x20: 1 * 0x24: 0x4F430000 */ if (read_32bit(start_offset+0x18, sf) != get_id32be("snds")) goto fail; coding = coding_PCM8_U_int; channels = 1; sample_rate = 16000; /* assumed */ } else { //todo /* The Lord of the Rings - The Return of the King (PC) uses IMA for sfx (in non-RVWS chunks) * and some unknown codec for streams (mixed with strings and cutscene(?) commands) */ goto fail; } break; default: VGM_LOG("EA SWVR: unknown block id\n"); goto fail; } if (target_subsong == 0) target_subsong = 1; if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail; loop_flag = 0;//(channels > 1); /* some Future Cop LAPD tracks repeat but other games have fadeouts */ /* build the VGMSTREAM */ vgmstream = allocate_vgmstream(channels, loop_flag); if (!vgmstream) goto fail; vgmstream->meta_type = meta_EA_SWVR; vgmstream->sample_rate = sample_rate; vgmstream->codec_endian = big_endian; vgmstream->num_streams = total_subsongs; vgmstream->stream_size = get_streamfile_size(sf) / total_subsongs; /* approx... */ vgmstream->coding_type = coding; vgmstream->layout_type = layout_blocked_ea_swvr; /* DSP coefs are loaded per block */ /* some files (voices etc) decode with pops but seems a mastering problem */ if (!vgmstream_open_stream(vgmstream,sf,start_offset)) goto fail; /* calc num_samples manually */ { int num_samples; vgmstream->stream_index = target_subsong; /* needed to skip other subsong-blocks */ vgmstream->next_block_offset = start_offset; do { block_update(vgmstream->next_block_offset,vgmstream); switch(vgmstream->coding_type) { case coding_PSX: num_samples = ps_bytes_to_samples(vgmstream->current_block_size,1); break; case coding_NGC_DSP: num_samples = dsp_bytes_to_samples(vgmstream->current_block_size,1); break; case coding_PCM8_U_int: num_samples = pcm_bytes_to_samples(vgmstream->current_block_size,1,8); break; default: num_samples = 0; break; } vgmstream->num_samples += num_samples; } while (vgmstream->next_block_offset < get_streamfile_size(sf)); block_update(start_offset, vgmstream); } if (loop_flag) { vgmstream->loop_start_sample = 0; vgmstream->loop_end_sample = vgmstream->num_samples; } return vgmstream; fail: close_vgmstream(vgmstream); return NULL; }