Cool_Tools/vgmstream
1
0
Fork 0
mirror of https://github.com/vgmstream/vgmstream.git synced 2025-01-29 19:37:30 +01:00
Code Issues Packages Projects Releases Wiki Activity

Fix bank .ivaud [GTA IV (PC)]

Browse Source
This commit is contained in:
bnnm 2018-07-06 23:41:29 +02:00
parent 44dc7ce7ea
commit 272f25cebb
1 changed files with 55 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
src/meta/ivaud.c
View File

@ -84,15 +84,17 @@ fail:
return NULL;
}
/* Parse Rockstar's .ivaud header (much info from SparksIV). */
/* Parse Rockstar's .ivaud header (much info from SparkIV). */
static int parse_ivaud_header(STREAMFILE* streamFile, ivaud_header* ivaud) {
off_t block_table_offset, channel_table_offset, channel_info_offset;
int target_subsong = streamFile->stream_index;
/* use bank's block_count to detect */
/* use bank's stream count to detect */
ivaud->is_music = (read_32bitLE(0x10,streamFile) == 0);
if (ivaud->is_music) {
off_t block_table_offset, channel_table_offset, channel_info_offset;
/* music header */
block_table_offset = read_32bitLE(0x00,streamFile); /* 64b */
ivaud->block_count = read_32bitLE(0x08,streamFile);
@ -115,11 +117,10 @@ static int parse_ivaud_header(STREAMFILE* streamFile, ivaud_header* ivaud) {
/* 0x0c(4): size */
/* channel info (one entry per channel) */
/* 0x00(8): offset to unknown data? */
/* 0x00(8): offset within data (should be 0) */
/* 0x08(4): hash */
/* 0x0c(4): samples in bytes? */
ivaud->num_samples = read_32bitLE(channel_info_offset+0x10,streamFile); /* data size? (double of 0x0c) */ //todo
//num_samples = read_32bitLE(channel_info_offset+0x10,streamFile); /* data size? (double of 0x0c) */ //todo
/* 0x0c(4): half num_samples? */
ivaud->num_samples = read_32bitLE(channel_info_offset+0x10,streamFile);
/* 0x14(4): unknown (-1) */
/* 0x18(2): sample rate */
/* 0x1a(2): unknown */
@ -138,8 +139,54 @@ static int parse_ivaud_header(STREAMFILE* streamFile, ivaud_header* ivaud) {
ivaud->stream_size = get_streamfile_size(streamFile);
}
else {
off_t stream_table_offset, stream_info_offset, stream_entry_offset;
/* bank header */
goto fail;
stream_table_offset = read_32bitLE(0x00,streamFile); /* 64b */
/* 0x08(8): header size? start offset? */
ivaud->total_subsongs = read_32bitLE(0x10,streamFile);
/* 0x14(4): unknown */
ivaud->stream_offset = read_32bitLE(0x18,streamFile); /* base start_offset */
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > ivaud->total_subsongs || ivaud->total_subsongs < 1) goto fail;
if (stream_table_offset != 0x1c)
goto fail;
stream_info_offset = stream_table_offset + 0x10*ivaud->total_subsongs;
/* stream table (one entry per stream, points to stream info) */
stream_entry_offset = read_32bitLE(stream_table_offset + 0x10*(target_subsong-1) + 0x00,streamFile); /* within stream info */
/* 0x00(8): offset within stream_info_offset */
/* 0x08(4): hash */
/* 0x0c(4): size */
/* stream info (one entry per stream) */
ivaud->stream_offset += read_32bitLE(stream_info_offset+stream_entry_offset+0x00,streamFile); /* 64b, within data */
/* 0x08(4): hash */
/* 0x0c(4): half num_samples? */
ivaud->num_samples = read_32bitLE(stream_info_offset+stream_entry_offset+0x10,streamFile);
/* 0x14(4): unknown (-1) */
ivaud->sample_rate = (uint16_t)read_16bitLE(stream_info_offset+stream_entry_offset+0x18,streamFile);
/* 0x1a(2): unknown */
ivaud->codec = read_32bitLE(stream_info_offset+stream_entry_offset+0x1c,streamFile);
/* (when codec is IMA) */
/* 0x20(8): adpcm states offset, 0x38: num states? (reference for seeks?) */
/* rest: unknown data */
ivaud->channel_count = 1;
/* ghetto size calculator (could substract offsets but streams are not ordered) */
switch(ivaud->codec) {
case 0x0001:
ivaud->stream_size = ivaud->num_samples * 2; /* double 16b PCM */
break;
case 0x0400:
ivaud->stream_size = ivaud->num_samples / 2; /* half nibbles */
break;
default:
break;
}
}