vgmstream/src/meta/psf.c
2021-11-13 14:43:52 +01:00

774 lines
26 KiB
C

#include "meta.h"
#include "../layout/layout.h"
#include "../coding/coding.h"
/* PSF single - Pivotal games single segment (external in some PC/Xbox or inside bigfiles) [The Great Escape, Conflict series] */
VGMSTREAM* init_vgmstream_psf_single(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
off_t start_offset;
int loop_flag, channel_count, sample_rate, rate_value, interleave;
uint32_t psf_config;
uint8_t flags;
size_t data_size;
coding_t codec;
/* checks */
if ((read_u32be(0x00,sf) & 0xFFFFFF00) != get_id32be("PSF\0"))
goto fail;
/* .psf: actual extension
* .swd: bigfile extension */
if (!check_extensions(sf, "psf,swd"))
goto fail;
flags = read_8bit(0x03,sf);
switch(flags) {
case 0xC0: /* [The Great Escape (PS2), Conflict: Desert Storm (PS2)] */
case 0x40: /* [The Great Escape (PS2)] */
case 0xA1: /* [Conflict: Desert Storm 2 (PS2)] */
case 0x21: /* [Conflict: Desert Storm 2 (PS2), Conflict: Global Storm (PS2)] */
//case 0x22: /* [Conflict: Vietman (PS2)] */ //todo weird size value, stereo, only one found
codec = coding_PSX;
interleave = 0x10;
channel_count = 2;
if (flags == 0x21 || flags == 0x40)
channel_count = 1;
start_offset = 0x08;
break;
case 0x80: /* [The Great Escape (PC/Xbox), Conflict: Desert Storm (Xbox/GC), Conflict: Desert Storm 2 (Xbox)] */
case 0x81: /* [Conflict: Desert Storm 2 (Xbox), Conflict: Vietnam (Xbox)] */
case 0x01: /* [Conflict: Global Storm (Xbox)] */
codec = coding_PSX_pivotal;
interleave = 0x10;
channel_count = 2;
if (flags == 0x01)
channel_count = 1;
start_offset = 0x08;
break;
case 0xD1: /* [Conflict: Desert Storm 2 (GC)] */
codec = coding_NGC_DSP;
interleave = 0x08;
channel_count = 2;
start_offset = 0x08 + 0x60 * channel_count;
break;
default:
goto fail;
}
loop_flag = 0;
psf_config = read_u32le(0x04, sf);
/* pitch/cents? */
rate_value = (psf_config >> 20) & 0xFFF;
switch(rate_value) {
case 3763: sample_rate = 44100; break;
case 1365: sample_rate = 16000; break;
case 940: sample_rate = 11050; break;
case 460: sample_rate = 5000; break;
default:
VGM_LOG("PSF: unknown rate value %x\n", rate_value);
sample_rate = rate_value * 11.72; /* not exact but works well enough */
break;
}
data_size = (psf_config & 0xFFFFF) * (interleave * channel_count); /* in blocks */
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count, loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_PSF;
vgmstream->sample_rate = sample_rate;
switch(codec) {
case coding_PSX:
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
vgmstream->num_samples = ps_bytes_to_samples(data_size, channel_count);
break;
case coding_PSX_pivotal:
vgmstream->coding_type = coding_PSX_pivotal;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
vgmstream->num_samples = ps_cfg_bytes_to_samples(data_size, 0x10, channel_count);
break;
case coding_NGC_DSP:
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
/* has standard DSP headers at 0x08 */
dsp_read_coefs_be(vgmstream,sf,0x08+0x1c,0x60);
dsp_read_hist_be (vgmstream,sf,0x08+0x40,0x60);
vgmstream->num_samples = read_32bitBE(0x08, sf);//dsp_bytes_to_samples(data_size, channel_count);
break;
default:
goto fail;
}
vgmstream->stream_size = data_size;
if (!vgmstream_open_stream(vgmstream,sf,start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
/* PSF segmented - Pivotal games multiple segments (external in some PC/Xbox or inside bigfiles) [The Great Escape, Conflict series] */
VGMSTREAM* init_vgmstream_psf_segmented(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
STREAMFILE* temp_sf = NULL;
segmented_layout_data *data = NULL;
int i,j, sequence_count = 0, loop_flag = 0, loop_start = 0, loop_end = 0;
int sequence[512] = {0};
off_t offsets[512] = {0};
int total_subsongs = 0, target_subsong = sf->stream_index;
char stream_name[STREAM_NAME_SIZE] = {0};
size_t stream_size = 0;
/* checks */
if (!is_id32be(0x00,sf, "PSF\x60") && /* [The Great Escape (PC/Xbox/PS2), Conflict: Desert Storm (Xbox/GC)] */
!is_id32be(0x00,sf, "PSF\x31")) /* [Conflict: Desert Storm 2 (Xbox/GC/PS2), Conflict: Global Terror (Xbox)] */
goto fail;
/* .psf: actual extension
* .swd: bigfile extension */
if (!check_extensions(sf, "psf,swd"))
goto fail;
/* transition table info:
* 0x00: offset
* 0x04: 0x02*4 next segment points (one per track)
* (xN segments)
*
* There are 4 possible tracks, like: normal, tension, action, high action. Segment 0 has tracks'
* entry segments (where 1=first, right after segment 0), and each segment has a link point to next
* (or starting) segment of any of other tracks. Thus, follow point 1/2/3/4 to playtrack 1/2/3/4
* (points also loop back). It's designed to go smoothly between any tracks (1>3, 4>1, etc),
* so sometimes "step" segments (that aren't normally played) are used.
* If a track doesn't exist it may keep repeating silent segments, but still defines points.
*
* ex. sequence could go like this:
* (read segment 0 track1 entry): 1
* - track0: 1>2>3>4>5>6>7>8>1>2>3, then to track2 goes 3>15>9
* - track1: 9>10>11>12>13>14>9>10, then to track4 goes 10>33
* - track2: 33>34>35>36>30>31>32>33, then to track1 goes 33>3
* - track3: 3>4>5>6... (etc)
*
* Well make a sequence based on target subsong:
* - 1: tracks mixed with transitions, looping back to track1 (only first is used in .sch so we want all)
* - 2~5: track1~4 looping back to themselves
* - 6+: single segment (where 6=first segment) to allow free mixes
*/
{
int track[4][255] = {0};
int count[4] = {0};
int current_track, current_point, next_point, repeat_point;
int transition_count = read_s32le(0x04, sf);
total_subsongs = 1 + 4 + (transition_count - 1);
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
if (target_subsong == 1) {
current_track = 0; /* start from first track, will move to others automatically */
snprintf(stream_name,sizeof(stream_name), "full");
}
else if (target_subsong <= 1+4) {
current_track = (target_subsong-1) - 1; /* where 0 = first track */
snprintf(stream_name,sizeof(stream_name), "track%i", (current_track+1));
}
else {
int segment = target_subsong - 1 - 4; /* where 1 = first segment */
sequence[0] = segment;
sequence_count = 1;
current_track = -1;
/* show transitions to help with ordering */
track[0][0] = read_16bitLE(0x08 + 0x0c*segment + 0x04, sf);
track[1][0] = read_16bitLE(0x08 + 0x0c*segment + 0x06, sf);
track[2][0] = read_16bitLE(0x08 + 0x0c*segment + 0x08, sf);
track[3][0] = read_16bitLE(0x08 + 0x0c*segment + 0x0a, sf);
snprintf(stream_name,sizeof(stream_name), "segment%03i to %03i/%03i/%03i/%03i", segment,track[0][0],track[1][0],track[2][0],track[3][0]);
}
/* find target sequence */
current_point = 0; /* segment 0 has track entry points */
while (sequence_count < 512 && current_track >= 0) {
next_point = read_16bitLE(0x08 + 0x0c*current_point + 0x04 + 0x02*current_track, sf);
/* find if next point repeats in our current track */
repeat_point = -1;
for (i = 0; i < count[current_track]; i++) {
if (track[current_track][i] == next_point) {
repeat_point = i;
break;
}
}
/* set loops and end sequence */
if (repeat_point >= 0) {
if (target_subsong == 1) {
/* move to next track and change transition to next track too */
current_track++;
/* to loop properly we set loop end in track3 and loop start in track0
* when track3 ends and move to track0 could have a transition segment
* before actually looping track0, so we do this in 2 steps */
if (loop_flag) { /* 2nd time repeat is found = loop start in track0 */
loop_start = repeat_point;
break; /* sequence fully done */
}
if (current_track > 3) { /* 1st time repeat is found = loop end in track3 */
current_track = 0;
loop_flag = 1;
}
next_point = read_16bitLE(0x08 + 0x0c*current_point + 0x04 + 0x02*current_track, sf);
if (loop_flag) {
loop_end = sequence_count; /* this points to the next_point that will be added below */
}
}
else {
/* end track N */
loop_flag = 1;
loop_start = repeat_point;
loop_end = sequence_count - 1;
break;
}
}
/* separate track info to find repeated points (since some transitions are common for all tracks) */
track[current_track][count[current_track]] = next_point;
count[current_track]++;
sequence[sequence_count] = next_point;
sequence_count++;
current_point = next_point;
}
if (sequence_count >= 512 || count[current_track] >= 512)
goto fail;
}
/* build segments */
data = init_layout_segmented(sequence_count);
if (!data) goto fail;
for (i = 0; i < sequence_count; i++) {
off_t psf_offset;
size_t psf_size;
int old_psf = -1;
psf_offset = read_u32le(0x08 + sequence[i]*0x0c + 0x00, sf);
psf_size = get_streamfile_size(sf) - psf_offset; /* not ok but meh */
/* find repeated sections (sequences often repeat PSFs) */
offsets[i] = psf_offset;
for (j = 0; j < i; j++) {
if (offsets[j] == psf_offset) {
old_psf = j;
break;
}
}
/* reuse repeated VGMSTREAMs to improve memory and bitrate calcs a bit */
if (old_psf >= 0) {
data->segments[i] = data->segments[old_psf];
}
else {
temp_sf = setup_subfile_streamfile(sf, psf_offset, psf_size, "psf");
if (!temp_sf) goto fail;
data->segments[i] = init_vgmstream_psf_single(temp_sf);
if (!data->segments[i]) goto fail;
stream_size += data->segments[i]->stream_size; /* only non-repeats */
}
}
/* setup VGMSTREAMs */
if (!setup_layout_segmented(data))
goto fail;
vgmstream = allocate_segmented_vgmstream(data,loop_flag, loop_start, loop_end);
if (!vgmstream) goto fail;
vgmstream->num_streams = total_subsongs;
vgmstream->stream_size = stream_size;
strcpy(vgmstream->stream_name, stream_name);
return vgmstream;
fail:
if (!vgmstream) free_layout_segmented(data);
close_streamfile(temp_sf);
close_vgmstream(vgmstream);
return NULL;
}
/* ***************************************************** */
static VGMSTREAM* init_vgmstream_psf_pfsm(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
off_t start_offset;
int loop_flag, channel_count, sample_rate = 0, rate_value = 0, interleave, big_endian;
size_t data_size;
coding_t codec;
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
/* standard:
* 0x00: -1/number (lang?)
* 0x04: config/size?
* 0x08: channel size? only ok for PSX-pivotal
* 0x0c: sample rate or rate_value
* 0x0e: 0x4=PSX-pivotal or 0xFF=PSX
* 0x0f: name size (0xCC/FF=null)
* 0x10: data
*
* GC is similar with 0x20-align between some fields
*/
/* checks */
if (!is_id32be(0x00,sf, "PFSM") &&
!is_id32le(0x00,sf, "PFSM"))
goto fail;
//if (!check_extensions(sf, "psf"))
// goto fail;
big_endian = is_id32le(0x00,sf, "PFSM");
if (big_endian) {
read_32bit = read_32bitBE;
read_16bit = read_16bitBE;
}
else {
read_32bit = read_32bitLE;
read_16bit = read_16bitLE;
}
loop_flag = 0;
if (big_endian && read_32bit(0x50, sf) != 0) { /* GC */
codec = coding_NGC_DSP;
interleave = 0x08;
channel_count = 1;
rate_value = (uint16_t)read_16bit(0x48, sf);
start_offset = 0x60 + 0x60 * channel_count;
}
else if (big_endian) { /* GC */
codec = coding_PCM16BE;
interleave = 0x02;
channel_count = 1;
rate_value = (uint16_t)read_16bit(0x48, sf);
start_offset = 0x60;
}
else if ((uint8_t)read_8bit(0x16, sf) == 0xFF) { /* PS2 */
codec = coding_PSX;
interleave = 0x10;
rate_value = (uint16_t)read_16bit(0x14, sf);
channel_count = 1;
start_offset = 0x18;
}
else { /* PC/Xbox, some PS2/GC */
codec = coding_PSX_pivotal;
interleave = 0x10;
sample_rate = (uint16_t)read_16bit(0x14, sf);
channel_count = 1;
start_offset = 0x18;
}
data_size = get_streamfile_size(sf) - start_offset;
/* pitch/cents? */
if (sample_rate == 0) {
/* pitch/cents? */
switch(rate_value) {
case 3763: sample_rate = 44100; break;
case 1365: sample_rate = 16000; break;
case 940: sample_rate = 11050; break;
case 460: sample_rate = 5000; break;
default:
VGM_LOG("PSF: unknown rate value %x\n", rate_value);
sample_rate = rate_value * 11.72; /* not exact but works well enough */
break;
}
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count, loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_PSF;
vgmstream->sample_rate = sample_rate;
switch(codec) {
case coding_PCM16BE:
vgmstream->coding_type = coding_PCM16BE;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
vgmstream->num_samples = pcm_bytes_to_samples(data_size, channel_count, 16);
break;
case coding_PSX:
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
vgmstream->num_samples = ps_bytes_to_samples(data_size, channel_count);
break;
case coding_PSX_pivotal:
vgmstream->coding_type = coding_PSX_pivotal;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
vgmstream->num_samples = ps_cfg_bytes_to_samples(data_size, 0x10, channel_count);
break;
case coding_NGC_DSP:
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
/* has standard DSP headers at 0x08 */
dsp_read_coefs_be(vgmstream,sf,0x60+0x1c,0x60);
dsp_read_hist_be (vgmstream,sf,0x60+0x40,0x60);
vgmstream->num_samples = read_32bitBE(0x60, sf);//dsp_bytes_to_samples(data_size, channel_count);
break;
default:
goto fail;
}
if (!vgmstream_open_stream(vgmstream,sf,start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
typedef enum { UNKNOWN, IMUS, PFST, PFSM } sch_type;
#define SCH_STREAM "Stream.swd"
/* SCH - Pivotal games multi-audio container [The Great Escape, Conflict series] */
VGMSTREAM* init_vgmstream_sch(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
STREAMFILE* external_sf = NULL;
STREAMFILE* temp_sf = NULL;
off_t skip = 0, chunk_offset, target_offset = 0, header_offset, subfile_offset = 0;
size_t file_size, chunk_padding, target_size = 0, subfile_size = 0;
int big_endian;
int total_subsongs = 0, target_subsong = sf->stream_index;
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
sch_type target_type = UNKNOWN;
char stream_name[STREAM_NAME_SIZE] ={0};
/* checks */
if (is_id32be(0x00,sf, "HDRS")) /* "HDRSND" (found on later games) */
skip = 0x0E;
if (!is_id32be(skip + 0x00,sf, "SCH\0") &&
!is_id32le(skip + 0x00,sf, "SCH\0")) /* (BE consoles) */
goto fail;
if (!check_extensions(sf, "sch"))
goto fail;
/* chunked format (id+size, GC pads to 0x20 and uses BE/inverted ids):
* no other info so total subsongs would be count of usable chunks
* (offsets are probably in level .dat files) */
big_endian = (is_id32le(skip + 0x00,sf, "SCH\0"));
if (big_endian) {
read_32bit = read_32bitBE;
chunk_padding = 0x18;
}
else {
read_32bit = read_32bitLE;
chunk_padding = 0;
}
file_size = get_streamfile_size(sf);
if (read_32bit(skip + 0x04,sf) + skip + 0x08 + chunk_padding < file_size) /* sometimes padded */
goto fail;
if (target_subsong == 0) target_subsong = 1;
chunk_offset = skip + 0x08 + chunk_padding;
/* get all files*/
while (chunk_offset < file_size) {
uint32_t chunk_id = read_32bitBE(chunk_offset + 0x00,sf);
uint32_t chunk_size = read_32bit(chunk_offset + 0x04,sf);
sch_type current_type = UNKNOWN;
switch(chunk_id) {
case 0x494D5553: /* "IMUS" (TGE PC/Xbox only) */
current_type = IMUS;
break;
case 0x54534650:
case 0x50465354: /* "PFST" */
current_type = PFST;
break;
case 0x4D534650:
case 0x5046534D: /* "PFSM" */
current_type = PFSM;
break;
case 0x4B4E4142:
case 0x42414E4B: /* "BANK" */
/* unknown format (variable size), maybe config for entry numbers */
break;
case 0x424C4F4B: /* "BLOK" [Conflict: Desert Storm (Xbox)] */
/* some ids or something? */
break;
default:
VGM_LOG("SCH: unknown chunk at %lx\n", chunk_offset);
goto fail;
}
if (current_type != UNKNOWN)
total_subsongs++;
if (total_subsongs == target_subsong && target_type == UNKNOWN) {
target_type = current_type;
target_offset = chunk_offset;
target_size = 0x08 + chunk_padding + chunk_size;
}
chunk_offset += 0x08 + chunk_padding + chunk_size;
}
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
if (target_size == 0) goto fail;
header_offset = target_offset + 0x08 + chunk_padding;
//;VGM_LOG("SCH: offset=%lx, size=%x\n",target_offset, target_size);
switch(target_type) {
case IMUS: { /* external segmented track */
STREAMFILE *psf_sf;
uint8_t name_size;
char name[255];
/* 0x00: config/size?
* 0x04: name size
* 0x05: segments
* 0x06: ?
* 0x08: relative path to .psf
* 0xNN: segment table (same as .psf)
*/
name_size = read_u8(header_offset + 0x04, sf);
read_string(name,name_size, header_offset + 0x08, sf);
/* later games have name but actually use bigfile [Conflict: Global Storm (Xbox)] */
if (read_u8(header_offset + 0x07, sf) == 0xCC) {
external_sf = open_streamfile_by_filename(sf, SCH_STREAM);
if (!external_sf) {
vgm_logi("SCH: external file '%s' not found (put together)\n", SCH_STREAM);
goto fail;
}
subfile_offset = read_32bit(header_offset + 0x08 + name_size, sf);
subfile_size = get_streamfile_size(external_sf) - subfile_offset; /* not ok but meh */
temp_sf = setup_subfile_streamfile(external_sf, subfile_offset,subfile_size, "psf");
if (!temp_sf) goto fail;
psf_sf = temp_sf;
}
else {
external_sf = open_streamfile_by_filename(sf, name);
if (!external_sf) {
vgm_logi("SCH: external file '%s' not found (put together)\n", name);
goto fail;
}
psf_sf = external_sf;
}
vgmstream = init_vgmstream_psf_segmented(psf_sf);
if (!vgmstream) {
vgmstream = init_vgmstream_psf_single(psf_sf);
if (!vgmstream) goto fail;
}
snprintf(stream_name,sizeof(stream_name), "%s-%s" , "IMUS", name);
break;
}
case PFST: { /* external track */
STREAMFILE *psf_sf;
uint8_t name_size;
char name[255];
if (chunk_padding == 0 && target_size > 0x08 + 0x0c) { /* TGE PC/Xbox version */
/* 0x00: -1/0
* 0x04: config/size?
* 0x08: channel size
* 0x0c: sample rate? (differs vs PSF)
* 0x0e: 4?
* 0x0f: name size
* 0x10: name
*/
/* later games have name but actually use bigfile [Conflict: Global Storm (Xbox)] */
if ((read_32bitBE(header_offset + 0x14, sf) & 0x0000FFFF) == 0xCCCC) {
name_size = read_8bit(header_offset + 0x13, sf);
read_string(name,name_size, header_offset + 0x18, sf);
external_sf = open_streamfile_by_filename(sf, SCH_STREAM);
if (!external_sf) {
vgm_logi("SCH: external file '%s' not found (put together)\n", SCH_STREAM);
goto fail;
}
subfile_offset = read_32bit(header_offset + 0x0c, sf);
subfile_size = get_streamfile_size(external_sf) - subfile_offset; /* not ok but meh */
temp_sf = setup_subfile_streamfile(external_sf, subfile_offset,subfile_size, "psf");
if (!temp_sf) goto fail;
psf_sf = temp_sf;
}
else {
name_size = read_8bit(header_offset + 0x0f, sf);
read_string(name,name_size, header_offset + 0x10, sf);
external_sf = open_streamfile_by_filename(sf, name);
if (!external_sf) {
vgm_logi("SCH: external file '%s' not found (put together)\n", name);
goto fail;
}
psf_sf = external_sf;
}
}
else if (chunk_padding) {
strcpy(name, "STREAM.SWD"); /* fixed */
/* 0x00: -1
* 0x04: config/size?
* 0x08: .swd offset
*/
external_sf = open_streamfile_by_filename(sf, name);
if (!external_sf) goto fail;
subfile_offset = read_32bit(header_offset + 0x24, sf);
subfile_size = get_streamfile_size(external_sf) - subfile_offset; /* not ok but meh */
temp_sf = setup_subfile_streamfile(external_sf, subfile_offset,subfile_size, "psf");
if (!temp_sf) goto fail;
psf_sf = temp_sf;
}
else { /* others */
strcpy(name, "STREAM.SWD"); /* fixed */
/* 0x00: -1
* 0x04: config/size?
* 0x08: .swd offset
*/
external_sf = open_streamfile_by_filename(sf, name);
if (!external_sf) goto fail;
subfile_offset = read_32bit(header_offset + 0x08, sf);
subfile_size = get_streamfile_size(external_sf) - subfile_offset; /* not ok but meh */
temp_sf = setup_subfile_streamfile(external_sf, subfile_offset,subfile_size, "psf");
if (!temp_sf) goto fail;
psf_sf = temp_sf;
}
vgmstream = init_vgmstream_psf_segmented(psf_sf);
if (!vgmstream) {
vgmstream = init_vgmstream_psf_single(psf_sf);
if (!vgmstream) goto fail;
}
snprintf(stream_name,sizeof(stream_name), "%s-%s" , "PFST", name);
break;
}
case PFSM:
/* internal sound */
temp_sf = setup_subfile_streamfile(sf, target_offset,target_size, NULL);
if (!temp_sf) goto fail;
vgmstream = init_vgmstream_psf_pfsm(temp_sf);
if (!vgmstream) goto fail;
snprintf(stream_name,sizeof(stream_name), "%s" , "PFSM");
break;
default: /* target not found */
goto fail;
}
vgmstream->num_streams = total_subsongs;
strcpy(vgmstream->stream_name, stream_name);
close_streamfile(temp_sf);
close_streamfile(external_sf);
return vgmstream;
fail:
close_streamfile(temp_sf);
close_streamfile(external_sf);
close_vgmstream(vgmstream);
return NULL;
}