mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 09:55:53 +01:00
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
#ifndef _AIX_STREAMFILE_H_
|
|
#define _AIX_STREAMFILE_H_
|
|
#include "deblock_streamfile.h"
|
|
|
|
//todo block size must check >= stream_size
|
|
|
|
static void block_callback(STREAMFILE *sf, deblock_io_data *data) {
|
|
uint32_t block_id = read_u32be(data->physical_offset + 0x00, sf);
|
|
data->block_size = read_u32be(data->physical_offset + 0x04, sf) + 0x08;
|
|
|
|
/* check "AIXP" id, (AIX segments end with "AIXE" too) */
|
|
if (block_id != 0x41495850) {
|
|
return;
|
|
}
|
|
|
|
/* read target layer, otherwise ignore block */
|
|
if (read_s8(data->physical_offset + 0x08, sf) == data->cfg.track_number) {
|
|
/* 0x09(1): layer count */
|
|
data->data_size = read_s16be(data->physical_offset + 0x0a, sf);
|
|
/* 0x0c: -1 */
|
|
data->skip_size = 0x10;
|
|
}
|
|
|
|
/* strange AIX in Tetris Collection (PS2) with padding before ADX start (no known flag) */
|
|
if (data->logical_offset == 0x00 &&
|
|
read_u32be(data->physical_offset + 0x10, sf) == 0 &&
|
|
read_u16be(data->physical_offset + data->block_size - 0x28, sf) == 0x8000) {
|
|
data->data_size = 0x28;
|
|
data->skip_size = data->block_size - 0x28;
|
|
}
|
|
}
|
|
|
|
/* Deinterleaves AIX layers */
|
|
static STREAMFILE* setup_aix_streamfile(STREAMFILE *sf, off_t stream_offset, size_t stream_size, int layer_number, const char* extension) {
|
|
STREAMFILE *new_sf = NULL;
|
|
deblock_config_t cfg = {0};
|
|
|
|
cfg.stream_start = stream_offset;
|
|
cfg.stream_size = stream_size;
|
|
cfg.track_number = layer_number;
|
|
cfg.block_callback = block_callback;
|
|
|
|
new_sf = open_wrap_streamfile(sf);
|
|
new_sf = open_io_deblock_streamfile_f(new_sf, &cfg);
|
|
//new_sf = open_buffer_streamfile_f(new_sf, 0);
|
|
if (extension)
|
|
new_sf = open_fakename_streamfile_f(new_sf, NULL, extension);
|
|
return new_sf;
|
|
}
|
|
|
|
#endif /* _AIX_STREAMFILE_H_ */
|