mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-24 04:14:50 +01:00
130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
#include "meta.h"
|
|
#include "../coding/coding.h"
|
|
#include "../layout/layout.h"
|
|
|
|
|
|
/* .str - 3DO format with CTRL/SNDS/SHDR blocks [Icebreaker (3DO), Battle Pinball (3DO)] */
|
|
VGMSTREAM* init_vgmstream_str_snds(STREAMFILE* sf) {
|
|
VGMSTREAM* vgmstream = NULL;
|
|
off_t start_offset, shdr_offset = -1;
|
|
int loop_flag, channels, found_shdr = 0;
|
|
size_t file_size, ctrl_size = -1;
|
|
|
|
|
|
/* checks */
|
|
/* .str: standard
|
|
* .stream: Battle Tryst (Arcade) movies
|
|
* .3do: Aqua World - Umimi Monogatari (3DO) movies */
|
|
if (!check_extensions(sf, "str,stream,3do"))
|
|
goto fail;
|
|
if (read_u32be(0x00,sf) != 0x4354524c && /* "CTRL" */
|
|
read_u32be(0x00,sf) != 0x534e4453 && /* "SNDS" */
|
|
read_u32be(0x00,sf) != 0x53484452) /* "SHDR" */
|
|
goto fail;
|
|
|
|
file_size = get_streamfile_size(sf);
|
|
start_offset = 0x00;
|
|
|
|
/* scan chunks until we find a SNDS containing a SHDR */
|
|
{
|
|
off_t offset = 0;
|
|
uint32_t size;
|
|
|
|
while (!found_shdr && offset < file_size) {
|
|
if (offset < 0) goto fail;
|
|
|
|
size = read_u32be(offset + 0x04,sf);
|
|
if (offset + size >= file_size)
|
|
goto fail;
|
|
|
|
switch (read_u32be(offset + 0x00,sf)) {
|
|
case 0x4354524C: /* "CTRL" */
|
|
ctrl_size = read_u32be(offset + 0x04,sf);
|
|
break;
|
|
|
|
case 0x534e4453: /* "SNDS" */
|
|
switch (read_u32be(offset + 0x10,sf)) {
|
|
case 0x53484452: /* SHDR */
|
|
found_shdr = 1;
|
|
shdr_offset = offset + 0x10;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 0x53484452: /* "SHDR" */
|
|
switch (read_u32be(offset + 0x7C, sf)) {
|
|
case 0x4354524C: /* "CTRL" */
|
|
/* to distinguish between styles */
|
|
ctrl_size = read_u32be(offset + 0x80, sf);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default: /* ignore others */
|
|
break;
|
|
}
|
|
|
|
offset += size;
|
|
}
|
|
}
|
|
|
|
if (!found_shdr)
|
|
goto fail;
|
|
|
|
channels = read_u32be(shdr_offset+0x20,sf);
|
|
loop_flag = 0;
|
|
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channels, loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
vgmstream->meta_type = meta_STR_SNDS;
|
|
vgmstream->sample_rate = read_u32be(shdr_offset+0x1c,sf);
|
|
|
|
if (ctrl_size == 0x1C || ctrl_size == 0x0B || ctrl_size == -1) {
|
|
vgmstream->num_samples = read_u32be(shdr_offset+0x2c,sf) - 1; /* sample count? */
|
|
}
|
|
else {
|
|
vgmstream->num_samples = read_u32be(shdr_offset+0x2c,sf) * 0x10; /* frame count? */
|
|
}
|
|
vgmstream->num_samples /= vgmstream->channels;
|
|
|
|
switch (read_u32be(shdr_offset + 0x24,sf)) {
|
|
case 0x53445832: /* "SDX2" (common) */
|
|
if (channels > 1) {
|
|
vgmstream->coding_type = coding_SDX2_int;
|
|
vgmstream->interleave_block_size = 0x01;
|
|
} else {
|
|
vgmstream->coding_type = coding_SDX2;
|
|
}
|
|
break;
|
|
|
|
case 0x43424432: /* "CBD2" (rare, Battle Tryst) */
|
|
if (channels > 1) {
|
|
vgmstream->coding_type = coding_CBD2_int;
|
|
vgmstream->interleave_block_size = 0x01;
|
|
} else {
|
|
vgmstream->coding_type = coding_CBD2; /* assumed */
|
|
}
|
|
break;
|
|
|
|
default:
|
|
goto fail;
|
|
}
|
|
vgmstream->layout_type = layout_blocked_str_snds;
|
|
|
|
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
|
|
goto fail;
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|