141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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typedef enum { IDSP, OPUS, RIFF, } nus3audio_codec;
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/* .nus3audio - Namco's newest newest audio container [Super Smash Bros. Ultimate (Switch), Mobile Suit Gundam: Extreme Vs. Maxi Boost ON (PS4)] */
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VGMSTREAM* init_vgmstream_nus3audio(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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STREAMFILE* temp_sf = NULL;
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off_t subfile_offset = 0, name_offset = 0;
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size_t subfile_size = 0;
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nus3audio_codec codec;
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const char* fake_ext = NULL;
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int total_subsongs, target_subsong = sf->stream_index, found = 0;
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/* checks */
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if (!check_extensions(sf, "nus3audio"))
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goto fail;
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if (read_u32be(0x00,sf) != 0x4E555333) /* "NUS3" */
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goto fail;
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if (read_u32le(0x04,sf) + 0x08 != get_streamfile_size(sf))
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goto fail;
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if (read_u32be(0x08,sf) != 0x41554449) /* "AUDI" */
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goto fail;
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/* parse existing chunks */
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{
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off_t offset = 0x0c;
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size_t file_size = get_streamfile_size(sf);
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uint32_t codec_id = 0;
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total_subsongs = 0;
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while (offset < file_size) {
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uint32_t chunk_id = read_u32be(offset+0x00, sf);
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size_t chunk_size = read_u32le(offset+0x04, sf);
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switch(chunk_id) {
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case 0x494E4458: /* "INDX": audio index */
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total_subsongs = read_u32le(offset+0x08 + 0x00,sf);
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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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break;
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case 0x4E4D4F46: /* "NMOF": name offsets (absolute, inside TNNM) */
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name_offset = read_u32le(offset+0x08 + 0x04*(target_subsong-1),sf);
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break;
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case 0x41444F46: /* "ADOF": audio offsets (absolute, inside PACK) */
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subfile_offset = read_u32le(offset+0x08 + 0x08*(target_subsong-1) + 0x00,sf);
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subfile_size = read_u32le(offset+0x08 + 0x08*(target_subsong-1) + 0x04,sf);
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found = 1;
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break;
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case 0x544E4944: /* "TNID": tone ids? */
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case 0x544E4E4D: /* "TNNM": tone names */
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case 0x4A554E4B: /* "JUNK": padding */
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case 0x5041434B: /* "PACK": main data */
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default:
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break;
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}
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offset += 0x08 + chunk_size;
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}
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if (total_subsongs == 0 || !found) {
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VGM_LOG("NUS3AUDIO: subfile not found\n");
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goto fail;
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}
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/* handle dummy entries, ex. Gundam EvM (PS4) */
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if (subfile_offset == 0 && subfile_size == 0) {
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vgmstream = init_vgmstream_silence(0, 0, 0);
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if (!vgmstream) goto fail;
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vgmstream->num_streams = total_subsongs;
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snprintf(vgmstream->stream_name, STREAM_NAME_SIZE, "%s", "dummy");
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return vgmstream;
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}
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codec_id = read_u32be(subfile_offset, sf);
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switch(codec_id) {
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case 0x49445350: /* "IDSP" */
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codec = IDSP;
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fake_ext = "idsp";
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break;
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case 0x4F505553: /* "OPUS" */
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codec = OPUS;
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fake_ext = "opus";
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break;
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case 0x52494646: /* "RIFF" [Gundam Versus (PS4)] */
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codec = RIFF;
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fake_ext = "wav";
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break;
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default:
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VGM_LOG("NUS3AUDIO: unknown codec %x\n", codec_id);
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goto fail;
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}
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}
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temp_sf = setup_subfile_streamfile(sf, subfile_offset, subfile_size, fake_ext);
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if (!temp_sf) goto fail;
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/* init the VGMSTREAM */
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switch(codec) {
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case IDSP:
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vgmstream = init_vgmstream_idsp_namco(temp_sf);
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if (!vgmstream) goto fail;
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break;
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case OPUS:
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vgmstream = init_vgmstream_opus_nus3(temp_sf);
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if (!vgmstream) goto fail;
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break;
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case RIFF:
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vgmstream = init_vgmstream_riff(temp_sf);
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if (!vgmstream) goto fail;
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break;
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default:
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goto fail;
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}
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vgmstream->num_streams = total_subsongs;
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if (name_offset) /* null-terminated */
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read_string(vgmstream->stream_name,STREAM_NAME_SIZE, name_offset,sf);
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close_streamfile(temp_sf);
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return vgmstream;
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fail:
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close_streamfile(temp_sf);
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close_vgmstream(vgmstream);
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return NULL;
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}
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