233 lines
7.8 KiB
C
233 lines
7.8 KiB
C
#include "meta.h"
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#include "../layout/layout.h"
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#include "../coding/coding.h"
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typedef struct {
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int is_music;
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int total_subsongs;
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int channel_count;
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int sample_rate;
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int codec;
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int num_samples;
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size_t block_count;
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size_t block_size;
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off_t stream_offset;
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size_t stream_size;
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int big_endian;
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} ivaud_header;
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static int parse_ivaud_header(STREAMFILE* sf, ivaud_header* ivaud);
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/* .ivaud - from GTA IV (PC/PS3/X360) */
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VGMSTREAM* init_vgmstream_ivaud(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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ivaud_header ivaud = {0};
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int loop_flag;
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/* checks */
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/* (hashed filenames are likely extensionless and .ivaud is added by tools) */
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if (!check_extensions(sf, "ivaud,"))
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goto fail;
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/* check header */
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if (!parse_ivaud_header(sf, &ivaud))
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goto fail;
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loop_flag = 0;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(ivaud.channel_count,loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = ivaud.sample_rate;
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vgmstream->num_samples = ivaud.num_samples;
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vgmstream->num_streams = ivaud.total_subsongs;
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vgmstream->stream_size = ivaud.stream_size;
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vgmstream->meta_type = meta_IVAUD;
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switch(ivaud.codec) {
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case 0x0001: /* common in sfx, uncommon in music (ex. EP2_SFX/MENU_MUSIC) */
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = ivaud.is_music ? layout_blocked_ivaud : layout_none;
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vgmstream->full_block_size = ivaud.block_size;
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break;
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#ifdef VGM_USE_FFMPEG
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case 0x0000: { /* XMA2 (X360) */
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uint8_t buf[0x100];
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size_t bytes;
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if (ivaud.is_music) {
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goto fail;
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}
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else {
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/* regular XMA for sfx */
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bytes = ffmpeg_make_riff_xma1(buf, 0x100, ivaud.num_samples, ivaud.stream_size, ivaud.channel_count, ivaud.sample_rate, 0);
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vgmstream->codec_data = init_ffmpeg_header_offset(sf, buf,bytes, ivaud.stream_offset, ivaud.stream_size);
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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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xma_fix_raw_samples(vgmstream, sf, ivaud.stream_offset, ivaud.stream_size, 0, 0,0); /* samples are ok? */
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}
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break;
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}
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#endif
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#ifdef VGM_USE_MPEG
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case 0x0100: { /* MPEG (PS3) */
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mpeg_custom_config cfg = {0};
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if (ivaud.is_music) {
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goto fail;
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}
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else {
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cfg.chunk_size = ivaud.block_size;
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cfg.big_endian = ivaud.big_endian;
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vgmstream->codec_data = init_mpeg_custom(sf, ivaud.stream_offset, &vgmstream->coding_type, vgmstream->channels, MPEG_STANDARD, &cfg);
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if (!vgmstream->codec_data) goto fail;
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vgmstream->layout_type = layout_none;
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}
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break;
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}
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#endif
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case 0x0400: /* PC */
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vgmstream->coding_type = coding_IMA_int;
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vgmstream->layout_type = ivaud.is_music ? layout_blocked_ivaud : layout_none;
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vgmstream->full_block_size = ivaud.block_size;
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break;
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default:
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VGM_LOG("IVAUD: unknown codec 0x%x\n", ivaud.codec);
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goto fail;
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}
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if (!vgmstream_open_stream(vgmstream,sf,ivaud.stream_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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/* Parse Rockstar's .ivaud header (much info from SparkIV). */
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static int parse_ivaud_header(STREAMFILE* sf, ivaud_header* ivaud) {
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int target_subsong = sf->stream_index;
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uint64_t (*read_u64)(off_t,STREAMFILE*);
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uint32_t (*read_u32)(off_t,STREAMFILE*);
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uint16_t (*read_u16)(off_t,STREAMFILE*);
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ivaud->big_endian = read_u32be(0x00, sf) == 0; /* table offset at 0x04 > BE (64b) */
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read_u64 = ivaud->big_endian ? read_u64be : read_u64le;
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read_u32 = ivaud->big_endian ? read_u32be : read_u32le;
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read_u16 = ivaud->big_endian ? read_u16be : read_u16le;
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/* use bank's stream count to detect */
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ivaud->is_music = (read_u32(0x10,sf) == 0);
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if (ivaud->is_music) {
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off_t block_table_offset, channel_table_offset, channel_info_offset;
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/* music header */
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block_table_offset = read_u64(0x00,sf);
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ivaud->block_count = read_u32(0x08,sf);
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ivaud->block_size = read_u32(0x0c,sf); /* uses padded blocks */
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/* 0x10(4): stream count */
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channel_table_offset = read_u64(0x14,sf);
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/* 0x1c(8): block_table_offset again? */
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ivaud->channel_count = read_u32(0x24,sf);
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/* 0x28(4): unknown entries? */
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ivaud->stream_offset = read_u32(0x2c,sf);
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channel_info_offset = channel_table_offset + ivaud->channel_count * 0x10;
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if ((ivaud->block_count * ivaud->block_size) + ivaud->stream_offset != get_streamfile_size(sf)) {
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VGM_LOG("IVAUD: bad file size\n");
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goto fail;
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}
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/* channel table (one entry per channel, points to channel info) */
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/* 0x00(8): offset within channel_info_offset */
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/* 0x08(4): hash */
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/* 0x0c(4): size */
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/* channel info (one entry per channel) */
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/* 0x00(8): offset within data (should be 0) */
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/* 0x08(4): hash */
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/* 0x0c(4): half num_samples? */
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ivaud->num_samples = read_u32(channel_info_offset+0x10,sf);
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/* 0x14(4): unknown (-1) */
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/* 0x18(2): sample rate */
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/* 0x1a(2): unknown */
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ivaud->codec = read_u32(channel_info_offset+0x1c,sf);
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/* (when codec is IMA) */
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/* 0x20(8): adpcm states offset, 0x38: num states? (reference for seeks?) */
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/* rest: unknown data */
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/* block table (one entry per block) */
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/* 0x00: data size processed up to this block (doesn't count block padding) */
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ivaud->sample_rate = read_u32(block_table_offset + 0x04,sf);
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/* sample_rate should agree with each channel in the channel table */
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ivaud->total_subsongs = 1;
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ivaud->stream_size = get_streamfile_size(sf);
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}
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else {
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off_t stream_table_offset, stream_info_offset, stream_entry_offset, offset;
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/* bank header */
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stream_table_offset = read_u64(0x00,sf);
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/* 0x08(8): header size? start offset? */
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ivaud->total_subsongs = read_u32(0x10,sf);
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/* 0x14(4): unknown */
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ivaud->stream_offset = read_u32(0x18,sf); /* base start_offset */
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if (target_subsong == 0) target_subsong = 1;
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if (target_subsong < 0 || target_subsong > ivaud->total_subsongs || ivaud->total_subsongs < 1) goto fail;
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if (stream_table_offset != 0x1c)
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goto fail;
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stream_info_offset = stream_table_offset + 0x10*ivaud->total_subsongs;
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/* stream table (one entry per stream, points to stream info) */
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stream_entry_offset = read_u64(stream_table_offset + 0x10*(target_subsong-1) + 0x00,sf); /* within stream info */
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/* 0x00(8): offset within stream_info_offset */
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/* 0x08(4): hash */
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/* 0x0c(4): some offset/size */
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/* stream info (one entry per stream) */
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offset = stream_info_offset + stream_entry_offset;
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ivaud->stream_offset += read_u64(offset+0x00,sf); /* within data */
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/* 0x08(4): hash */
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ivaud->stream_size = read_u32(offset+0x0c,sf);
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ivaud->num_samples = read_u32(offset+0x10,sf);
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/* 0x14(4): unknown (-1) */
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ivaud->sample_rate = read_u16(offset+0x18,sf);
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/* 0x1a(2): unknown */
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ivaud->codec = read_u32(offset+0x1c,sf);
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/* (when codec is IMA) */
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/* 0x20(8): adpcm states offset, 0x38: num states? (reference for seeks?) */
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/* rest: unknown data */
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ivaud->channel_count = 1;
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}
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return 1;
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fail:
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return 0;
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}
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