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ivaud: improve detection

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This commit is contained in:
bnnm 2023-07-23 11:03:29 +02:00
parent 738c9a4199
commit dbeb538d1a
2 changed files with 14 additions and 9 deletions
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21
src/meta/ivaud.c
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@ -1,6 +1,7 @@
#include "meta.h"
#include "../layout/layout.h"
#include "../coding/coding.h"
#include "../util/endianness.h"
typedef struct {
int is_music;
@ -31,13 +32,13 @@ VGMSTREAM* init_vgmstream_ivaud(STREAMFILE* sf) {
int loop_flag;
/* checks */
/* (hashed filenames are likely extensionless and .ivaud is added by tools) */
/* (hashed filenames are likely extensionless, .ivaud is added by tools) */
if (!check_extensions(sf, "ivaud,"))
goto fail;
return NULL;
/* check header */
if (!parse_ivaud_header(sf, &ivaud))
goto fail;
return NULL;
loop_flag = 0;
@ -121,9 +122,9 @@ fail:
/* Parse Rockstar's .ivaud header (much info from SparkIV). */
static int parse_ivaud_header(STREAMFILE* sf, ivaud_header* ivaud) {
int target_subsong = sf->stream_index;
uint64_t (*read_u64)(off_t,STREAMFILE*);
uint32_t (*read_u32)(off_t,STREAMFILE*);
uint16_t (*read_u16)(off_t,STREAMFILE*);
read_u64_t read_u64;
read_u32_t read_u32;
read_u16_t read_u16;
ivaud->big_endian = read_u32be(0x00, sf) == 0; /* table offset at 0x04 > BE (64b) */
@ -131,6 +132,10 @@ static int parse_ivaud_header(STREAMFILE* sf, ivaud_header* ivaud) {
read_u32 = ivaud->big_endian ? read_u32be : read_u32le;
read_u16 = ivaud->big_endian ? read_u16be : read_u16le;
uint64_t table_offset = read_u64(0x00,sf);
if (table_offset > 0x10000) /* arbitrary max, typically 0x1c~0x1000 */
return 0;
/* use bank's stream count to detect */
ivaud->is_music = (read_u32(0x10,sf) == 0);
@ -138,7 +143,7 @@ static int parse_ivaud_header(STREAMFILE* sf, ivaud_header* ivaud) {
off_t block_table_offset, channel_table_offset, channel_info_offset;
/* music header */
block_table_offset = read_u64(0x00,sf);
block_table_offset = table_offset;
ivaud->block_count = read_u32(0x08,sf);
ivaud->block_size = read_u32(0x0c,sf); /* uses padded blocks */
/* 0x10(4): stream count */
@ -185,7 +190,7 @@ static int parse_ivaud_header(STREAMFILE* sf, ivaud_header* ivaud) {
off_t stream_table_offset, stream_info_offset, stream_entry_offset, offset;
/* bank header */
stream_table_offset = read_u64(0x00,sf);
stream_table_offset = table_offset;
/* 0x08(8): header size? start offset? */
ivaud->total_subsongs = read_u32(0x10,sf);
/* 0x14(4): unknown */

2
src/vgmstream.c
View File

@ -170,7 +170,6 @@ init_vgmstream_t init_vgmstream_functions[] = {
init_vgmstream_zsd,
init_vgmstream_vgs_ps,
init_vgmstream_redspark,
init_vgmstream_ivaud,
init_vgmstream_wii_wsd,
init_vgmstream_dsp_ndp,
init_vgmstream_ps2_sps,
@ -533,6 +532,7 @@ init_vgmstream_t init_vgmstream_functions[] = {
init_vgmstream_mic_koei,
init_vgmstream_seb,
init_vgmstream_tgc,
init_vgmstream_ivaud,
/* need companion files */
init_vgmstream_pos,
init_vgmstream_sli_loops,