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Add .vag variation [Gift (PS2)]

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bnnm 2021-04-18 13:10:14 +02:00
parent 05a7e140ff
commit 53bb89fd36
1 changed files with 366 additions and 351 deletions
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717
src/meta/vag.c
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@ -1,351 +1,366 @@
#include "meta.h"
#include "../coding/coding.h"
/* VAGp - Sony SDK format, created by various tools */
VGMSTREAM * init_vgmstream_vag(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
off_t start_offset;
size_t file_size, channel_size, interleave, interleave_first = 0, interleave_first_skip = 0;
meta_t meta_type;
int channel_count = 0, loop_flag, sample_rate;
uint32_t vag_id, version;
int32_t loop_start_sample = 0, loop_end_sample = 0;
int allow_dual_stereo = 0;
/* checks */
/* .vag: standard
* .swag: Frantix (PSP)
* .str: Ben10 Galactic Racing
* .vig: MX vs. ATV Untamed (PS2)
* .l/r: Crash Nitro Kart (PS2), Gradius V (PS2)
* .vas: Kingdom Hearts II (PS2) */
if ( !check_extensions(streamFile,"vag,swag,str,vig,l,r,vas") )
goto fail;
/* check VAG Header */
if (((read_32bitBE(0x00,streamFile) & 0xFFFFFF00) != 0x56414700) && /* "VAG" */
((read_32bitLE(0x00,streamFile) & 0xFFFFFF00) != 0x56414700))
goto fail;
file_size = get_streamfile_size(streamFile);
/* version used to create the file:
* - 00000000 = v1.8 PC,
* - 00000002 = v1.3 Mac (used?)
* - 00000003 = v1.6+ Mac
* - 00000020 = v2.0 PC (most common)
* - 00000004 = ? (later games)
* - 00000006 = ? (vagconv)
* - 00020001 = v2.1 (vagconv2)
* - 00030000 = v3.0 (vagconv2) */
version = (uint32_t)read_32bitBE(0x04,streamFile);
/* 0x08-0c: reserved */
channel_size = read_32bitBE(0x0c,streamFile);
sample_rate = read_32bitBE(0x10,streamFile);
/* 0x14-20 reserved */
/* 0x20-30: name (optional) */
/* 0x30: data start (first 0x10 usually 0s to init SPU) */
/* check variation */
vag_id = read_32bitBE(0x00,streamFile);
switch(vag_id) {
case 0x56414731: /* "VAG1" (1 channel) [Metal Gear Solid 3 (PS2)] */
meta_type = meta_PS2_VAG1;
start_offset = 0x40; /* 0x30 is extra data in VAG1 */
channel_count = 1;
interleave = 0;
loop_flag = 0;
break;
case 0x56414732: /* "VAG2" (2 channels) [Metal Gear Solid 3 (PS2)] */
meta_type = meta_PS2_VAG2;
start_offset = 0x40; /* 0x30 is extra data in VAG2 */
channel_count = 2;
interleave = 0x800;
loop_flag = 0;
break;
case 0x56414769: /* "VAGi" (interleaved) */
meta_type = meta_PS2_VAGi;
start_offset = 0x800;
channel_count = 2;
interleave = read_32bitLE(0x08,streamFile);
loop_flag = 0;
break;
case 0x70474156: /* pGAV (little endian / stereo) [Jak 3 (PS2), Jak X (PS2)] */
meta_type = meta_PS2_pGAV;
start_offset = 0x30;
if (read_32bitBE(0x20,streamFile) == 0x53746572) { /* "Ster" */
channel_count = 2;
if (read_32bitLE(0x2000,streamFile) == 0x56414770) /* "pGAV" */
interleave = 0x2000; /* Jak 3 interleave, includes header */
else if (read_32bitLE(0x1000,streamFile) == 0x56414770) /* "pGAV" */
interleave = 0x1000; /* Jak X interleave, includes header */
else
interleave = 0x2000; /* Jak 3 interleave in rare files, no header */
interleave_first = interleave - start_offset; /* interleave includes header */
interleave_first_skip = start_offset;
}
else {
channel_count = 1;
interleave = 0;
}
channel_size = read_32bitLE(0x0C,streamFile) / channel_count;
sample_rate = read_32bitLE(0x10,streamFile);
//todo adjust channel_size, includes part of header?
loop_flag = 0;
break;
case 0x56414770: /* "VAGp" (standard and variations) */
meta_type = meta_PS2_VAGp;
if (check_extensions(streamFile,"vig")) {
/* MX vs. ATV Untamed (PS2) */
start_offset = 0x800 - 0x20;
channel_count = 2;
interleave = 0x10;
loop_flag = 0;
}
else if (check_extensions(streamFile,"swag")) { /* also "VAGp" at (file_size / channels) */
/* Frantix (PSP) */
start_offset = 0x40; /* channel_size ignores empty frame */
channel_count = 2;
interleave = file_size / channel_count;
channel_size = read_32bitLE(0x0c,streamFile);
sample_rate = read_32bitLE(0x10,streamFile);
loop_flag = ps_find_loop_offsets(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
}
else if (read_32bitBE(0x6000,streamFile) == 0x56414770) { /* "VAGp" */
/* The Simpsons Wrestling (PS1) */
start_offset = 0x30;
channel_count = 2;
interleave = 0x6000;
interleave_first = interleave - start_offset; /* includes header */
interleave_first_skip = start_offset;
loop_flag = 0;
}
else if (read_32bitBE(0x1000,streamFile) == 0x56414770) { /* "VAGp" */
/* Shikigami no Shiro (PS2) */
start_offset = 0x30;
channel_count = 2;
interleave = 0x1000;
interleave_first = interleave - start_offset; /* includes header */
interleave_first_skip = start_offset;
loop_flag = ps_find_loop_offsets(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
}
else if (version == 0x40000000) {
/* Killzone (PS2) */
start_offset = 0x30;
channel_count = 1;
interleave = 0;
channel_size = read_32bitLE(0x0C,streamFile) / channel_count;
sample_rate = read_32bitLE(0x10,streamFile);
loop_flag = 0;
}
else if (version == 0x00020001 || version == 0x00030000) {
/* standard Vita/PS4 .vag [Chronovolt (Vita), Grand Kingdom (PS4)] */
start_offset = 0x30;
interleave = 0x10;
/* channels are at 0x1e, except Ukiyo no Roushi (Vita), which has
* loop start/end frame (but also uses PS-ADPCM flags) */
if (read_32bitBE(0x18,streamFile) == 0
&& (read_32bitBE(0x1c,streamFile) & 0xFFFF00FF) == 0
&& read_8bit(0x1e,streamFile) < 16) {
channel_count = read_8bit(0x1e,streamFile);
if (channel_count == 0)
channel_count = 1; /* ex. early games [Lumines (Vita)] */
}
else {
channel_count = 1;
}
channel_size = channel_size / channel_count;
loop_flag = ps_find_loop_offsets(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
}
else if (version == 0x00000004 && channel_size == file_size - 0x60 && read_32bitBE(0x1c, streamFile) != 0) { /* also .vas */
/* Kingdom Hearts II (PS2) */
start_offset = 0x60;
interleave = 0x10;
loop_start_sample = read_32bitBE(0x14,streamFile);
loop_end_sample = read_32bitBE(0x18,streamFile);
loop_flag = (loop_end_sample > 0); /* maybe at 0x1d */
channel_count = read_8bit(0x1e,streamFile);
/* 0x1f: possibly volume */
channel_size = channel_size / channel_count;
/* mono files also have channel/volume, but start at 0x30 and are probably named .vag */
}
else if (read_32bitBE(0x30,streamFile) == 0x53544552 /* "STEREOVAG2K " */
&& read_32bitBE(0x34,streamFile) == 0x454F5641
&& read_32bitBE(0x38,streamFile) == 0x47324B00) {
/* The Simpsons Skateboarding (PS2) */
start_offset = 0x800;
channel_count = 2;
interleave = 0x800;
loop_flag = 0;
}
else if (version == 0x00000002 && read_32bitBE(0x24, streamFile) == 0x56414778) { /* "VAGx" */
/* Need for Speed: Hot Pursuit 2 (PS2) */
start_offset = 0x30;
channel_count = read_32bitBE(0x2c, streamFile);
channel_size = channel_size / channel_count;
loop_flag = 0;
if (file_size % 0x10 != 0) goto fail;
/* detect interleave using end markers */
interleave = 0;
if (channel_count > 1) {
off_t offset = file_size;
off_t end_off = 0;
uint8_t flag;
while (offset > start_offset) {
offset -= 0x10;
flag = read_8bit(offset + 0x01, streamFile);
if (flag == 0x01) {
if (!end_off) {
end_off = offset;
} else {
interleave = end_off - offset;
break;
}
}
}
if (!interleave) goto fail;
}
}
else if (version == 0x00000020 && channel_size == file_size - 0x800 && read_32bitBE(0x08, streamFile) == 0x01) {
/* Garfield: Saving Arlene (PS2) */
start_offset = 0x800;
channel_count = 2;
interleave = 0x400;
loop_flag = 0;
channel_size -= ps_find_padding(streamFile, start_offset, channel_size, channel_count, interleave, 0);
channel_size = channel_size / channel_count;
}
else {
/* standard PS1/PS2/PS3 .vag [Ecco the Dolphin (PS2), Legasista (PS3)] */
start_offset = 0x30;
interleave = 0;
channel_count = 1;
if (version == 0x20 /* hack for repeating full loops that aren't too small */
&& ps_bytes_to_samples(channel_size, 1) > 20 * sample_rate) {
loop_flag = ps_find_loop_offsets_full(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
}
else {
loop_flag = ps_find_loop_offsets(streamFile, start_offset, channel_size*channel_count, channel_count, interleave, &loop_start_sample, &loop_end_sample);
}
allow_dual_stereo = 1; /* often found with external L/R files */
}
break;
default:
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_type;
vgmstream->allow_dual_stereo = allow_dual_stereo;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = ps_bytes_to_samples(channel_size,1);
vgmstream->loop_start_sample = loop_start_sample;
vgmstream->loop_end_sample = loop_end_sample;
vgmstream->coding_type = coding_PSX;
if (version == 0x00020001 || version == 0x00030000)
vgmstream->coding_type = coding_HEVAG;
vgmstream->layout_type = (channel_count == 1) ? layout_none : layout_interleave;
vgmstream->interleave_block_size = interleave;
vgmstream->interleave_first_block_size = interleave_first;
vgmstream->interleave_first_skip = interleave_first_skip;
read_string(vgmstream->stream_name,0x10+1, 0x20,streamFile); /* always, can be null */
if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
/* AAAp - Acclaim Austin Audio VAG header [The Red Star (PS2)] */
VGMSTREAM* init_vgmstream_vag_aaap(STREAMFILE* streamFile) {
VGMSTREAM* vgmstream = NULL;
off_t vag_offset, start_offset;
uint32_t channel_size, sample_rate;
uint16_t interleave, channels;
uint32_t i;
int loop_flag;
/* checks */
/* .vag - assumed, we don't know the original filenames */
if (!check_extensions(streamFile, "vag"))
goto fail;
if (read_u32be(0x00, streamFile) != 0x41414170) /* "AAAp" */
goto fail;
interleave = read_u16le(0x04, streamFile);
channels = read_u16le(0x06, streamFile);
vag_offset = 0x08;
/* file has VAGp header for each channel */
for (i = 0; i < channels; i++) {
if (read_u32be(vag_offset + i * 0x30, streamFile) != 0x56414770) /* "VAGp" */
goto fail;
}
/* check version */
if (read_u32be(vag_offset + 0x04, streamFile) != 0x00000020)
goto fail;
channel_size = read_u32be(vag_offset + 0x0c, streamFile);
sample_rate = read_u32be(vag_offset + 0x10, streamFile);
start_offset = vag_offset + channels * 0x30;
loop_flag = 0;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channels, loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_PS2_VAGp_AAAP;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = ps_bytes_to_samples(channel_size, 1);
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
if (!vgmstream_open_stream(vgmstream, streamFile, start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
#include "meta.h"
#include "../coding/coding.h"
/* VAGp - Sony SDK format, created by various official tools */
VGMSTREAM* init_vgmstream_vag(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
off_t start_offset;
size_t file_size, channel_size, interleave, interleave_first = 0, interleave_first_skip = 0;
meta_t meta_type;
int channels = 0, loop_flag, sample_rate;
uint32_t vag_id, version, reserved;
int32_t loop_start_sample = 0, loop_end_sample = 0;
int allow_dual_stereo = 0, has_interleave_last = 0;
/* checks */
/* .vag: standard
* .swag: Frantix (PSP)
* .str: Ben10 Galactic Racing
* .vig: MX vs. ATV Untamed (PS2)
* .l/r: Crash Nitro Kart (PS2), Gradius V (PS2)
* .vas: Kingdom Hearts II (PS2) */
if ( !check_extensions(sf,"vag,swag,str,vig,l,r,vas") )
goto fail;
if (((read_u32be(0x00,sf) & 0xFFFFFF00) != 0x56414700) && /* "VAG" */
((read_u32le(0x00,sf) & 0xFFFFFF00) != 0x56414700))
goto fail;
file_size = get_streamfile_size(sf);
/* versions used to create the file:
* - 00000000 = v1.8 PC
* - 00000002 = v1.3 Mac (used?)
* - 00000003 = v1.6+ Mac
* - 00000020 = v2.0 PC (most common)
* - 00000004 = ? (later games)
* - 00000006 = ? (vagconv)
* - 00020001 = v2.1 (vagconv2)
* - 00030000 = v3.0 (vagconv2) */
vag_id = read_u32be(0x00,sf);
version = read_u32be(0x04,sf);
reserved = read_u32be(0x08,sf);
channel_size = read_u32be(0x0c,sf);
sample_rate = read_u32be(0x10,sf);
/* 0x14-20 reserved */
/* 0x20-30: name (optional) */
/* 0x30: data start (first 0x10 usually 0s to init SPU) */
/* check variation */
switch(vag_id) {
case 0x56414731: /* "VAG1" (1 channel) [Metal Gear Solid 3 (PS2)] */
meta_type = meta_PS2_VAG1;
start_offset = 0x40; /* 0x30 is extra data in VAG1 */
channels = 1;
interleave = 0;
loop_flag = 0;
break;
case 0x56414732: /* "VAG2" (2 channels) [Metal Gear Solid 3 (PS2)] */
meta_type = meta_PS2_VAG2;
start_offset = 0x40; /* 0x30 is extra data in VAG2 */
channels = 2;
interleave = 0x800;
loop_flag = 0;
break;
case 0x56414769: /* "VAGi" (interleaved) */
meta_type = meta_PS2_VAGi;
start_offset = 0x800;
channels = 2;
interleave = read_u32le(0x08,sf);
loop_flag = 0;
break;
case 0x70474156: /* pGAV (little endian / stereo) [Jak 3 (PS2), Jak X (PS2)] */
meta_type = meta_PS2_pGAV;
start_offset = 0x30;
if (is_id32be(0x20,sf, "Ster")) {
channels = 2;
if (is_id32be(0x2000,sf, "pGAV"))
interleave = 0x2000; /* Jak 3 interleave, includes header */
else if (is_id32be(0x1000,sf, "pGAV"))
interleave = 0x1000; /* Jak X interleave, includes header */
else
interleave = 0x2000; /* Jak 3 interleave in rare files, no header */
interleave_first = interleave - start_offset; /* interleave includes header */
interleave_first_skip = start_offset;
}
else {
channels = 1;
interleave = 0;
}
channel_size = read_u32le(0x0C,sf) / channels;
sample_rate = read_s32le(0x10,sf);
//todo adjust channel_size, includes part of header?
loop_flag = 0;
break;
case 0x56414770: /* "VAGp" (standard and variations) */
meta_type = meta_PS2_VAGp;
if (check_extensions(sf,"vig")) {
/* MX vs. ATV Untamed (PS2) */
start_offset = 0x800 - 0x20;
channels = 2;
interleave = 0x10;
loop_flag = 0;
}
else if (check_extensions(sf,"swag")) { /* also "VAGp" at (file_size / channels) */
/* Frantix (PSP) */
start_offset = 0x40; /* channel_size ignores empty frame */
channels = 2;
interleave = file_size / channels;
channel_size = read_u32le(0x0c,sf);
sample_rate = read_s32le(0x10,sf);
loop_flag = ps_find_loop_offsets(sf, start_offset, channel_size*channels, channels, interleave, &loop_start_sample, &loop_end_sample);
}
else if (is_id32be(0x6000,sf, "VAGp")) {
/* The Simpsons Wrestling (PS1) */
start_offset = 0x30;
channels = 2;
interleave = 0x6000;
interleave_first = interleave - start_offset; /* includes header */
interleave_first_skip = start_offset;
loop_flag = 0;
}
else if (is_id32be(0x1000,sf, "VAGp")) {
/* Shikigami no Shiro (PS2) */
start_offset = 0x30;
channels = 2;
interleave = 0x1000;
interleave_first = interleave - start_offset; /* includes header */
interleave_first_skip = start_offset;
loop_flag = ps_find_loop_offsets(sf, start_offset, channel_size*channels, channels, interleave, &loop_start_sample, &loop_end_sample);
}
else if (version == 0x40000000) {
/* Killzone (PS2) */
start_offset = 0x30;
channels = 1;
interleave = 0;
channel_size = read_u32le(0x0C,sf) / channels;
sample_rate = read_s32le(0x10,sf);
loop_flag = 0;
}
else if (version == 0x00020001 || version == 0x00030000) {
/* standard Vita/PS4 .vag [Chronovolt (Vita), Grand Kingdom (PS4)] */
start_offset = 0x30;
interleave = 0x10;
/* channels are at 0x1e, except Ukiyo no Roushi (Vita), which has
* loop start/end frame (but also uses PS-ADPCM flags) */
if (read_u32be(0x18,sf) == 0
&& (read_u32be(0x1c,sf) & 0xFFFF00FF) == 0
&& read_u8(0x1e,sf) < 16) {
channels = read_u8(0x1e,sf);
if (channels == 0)
channels = 1; /* ex. early games [Lumines (Vita)] */
}
else {
channels = 1;
}
channel_size = channel_size / channels;
loop_flag = ps_find_loop_offsets(sf, start_offset, channel_size*channels, channels, interleave, &loop_start_sample, &loop_end_sample);
}
else if (version == 0x00000004 && channel_size == file_size - 0x60 && read_u32be(0x1c, sf) != 0) { /* also .vas */
/* Kingdom Hearts II (PS2) */
start_offset = 0x60;
interleave = 0x10;
loop_start_sample = read_s32be(0x14,sf);
loop_end_sample = read_s32be(0x18,sf);
loop_flag = (loop_end_sample > 0); /* maybe at 0x1d */
channels = read_u8(0x1e,sf);
/* 0x1f: possibly volume */
channel_size = channel_size / channels;
/* mono files also have channel/volume, but start at 0x30 and are probably named .vag */
}
else if (version == 0x00000020 && is_id32be(0x30,sf, "STER") && is_id32be(0x34,sf, "EOVA") && is_id32be(0x38,sf, "G2K\0")) {
/* The Simpsons Skateboarding (PS2) */
start_offset = 0x800;
channels = 2;
interleave = 0x800;
loop_flag = 0;
}
else if (version == 0x00000002 && is_id32be(0x24, sf, "VAGx")) {
/* Need for Speed: Hot Pursuit 2 (PS2) */
start_offset = 0x30;
channels = read_u32be(0x2c, sf);
channel_size = channel_size / channels;
loop_flag = 0;
if (file_size % 0x10 != 0)
goto fail;
/* detect interleave using end markers */
interleave = 0;
if (channels > 1) {
off_t offset = file_size;
off_t end_off = 0;
uint8_t flag;
while (offset > start_offset) {
offset -= 0x10;
flag = read_u8(offset + 0x01, sf);
if (flag == 0x01) {
if (!end_off) {
end_off = offset;
} else {
interleave = end_off - offset;
break;
}
}
}
if (!interleave) goto fail;
}
}
else if (version == 0x00000020 && channel_size == file_size - 0x800 && read_u32be(0x08, sf) == 0x01) {
/* Garfield: Saving Arlene (PS2) */
start_offset = 0x800;
channels = 2;
interleave = 0x400;
loop_flag = 0;
channel_size -= ps_find_padding(sf, start_offset, channel_size, channels, interleave, 0);
channel_size = channel_size / channels;
}
else if (version == 0x00000020 && reserved == 0x01010101) {
/* Gift (PS2) */
start_offset = 0x800;
channels = 2; /* mono VAGs in this game are standard, without reserved value */
interleave = 0x2000;
if (read_u32be(0x4800,sf) == 0x00000000) /* one file has bigger interleave, detectable with ch2's null frame */
interleave = 0x4000;
channel_size = channel_size / channels;
has_interleave_last = 1;
/* all files do full loops */
loop_flag = 1;
loop_start_sample = 0;
loop_end_sample = ps_bytes_to_samples(channel_size,1);
}
else {
/* standard PS1/PS2/PS3 .vag [Ecco the Dolphin (PS2), Legasista (PS3)] */
start_offset = 0x30;
interleave = 0;
channels = 1;
if (version == 0x20 /* hack for repeating full loops that aren't too small */
&& ps_bytes_to_samples(channel_size, 1) > 20 * sample_rate) {
loop_flag = ps_find_loop_offsets_full(sf, start_offset, channel_size*channels, channels, interleave, &loop_start_sample, &loop_end_sample);
}
else {
loop_flag = ps_find_loop_offsets(sf, start_offset, channel_size*channels, channels, interleave, &loop_start_sample, &loop_end_sample);
}
allow_dual_stereo = 1; /* often found with external L/R files */
}
break;
default:
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channels, loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_type;
vgmstream->allow_dual_stereo = allow_dual_stereo;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = ps_bytes_to_samples(channel_size,1);
vgmstream->loop_start_sample = loop_start_sample;
vgmstream->loop_end_sample = loop_end_sample;
vgmstream->coding_type = coding_PSX;
if (version == 0x00020001 || version == 0x00030000)
vgmstream->coding_type = coding_HEVAG;
vgmstream->layout_type = (channels == 1) ? layout_none : layout_interleave;
vgmstream->interleave_block_size = interleave;
vgmstream->interleave_first_block_size = interleave_first;
vgmstream->interleave_first_skip = interleave_first_skip;
if (has_interleave_last && channels > 1 && interleave)
vgmstream->interleave_last_block_size = channel_size % interleave;
read_string(vgmstream->stream_name,0x10+1, 0x20,sf); /* always, can be null */
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
/* AAAp - Acclaim Austin Audio VAG header [The Red Star (PS2)] */
VGMSTREAM* init_vgmstream_vag_aaap(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
off_t vag_offset, start_offset;
uint32_t channel_size, sample_rate;
uint16_t interleave, channels;
uint32_t i;
int loop_flag;
/* checks */
/* .vag - assumed, we don't know the original filenames */
if (!check_extensions(sf, "vag"))
goto fail;
if (read_u32be(0x00, sf) != 0x41414170) /* "AAAp" */
goto fail;
interleave = read_u16le(0x04, sf);
channels = read_u16le(0x06, sf);
vag_offset = 0x08;
/* file has VAGp header for each channel */
for (i = 0; i < channels; i++) {
if (read_u32be(vag_offset + i * 0x30, sf) != 0x56414770) /* "VAGp" */
goto fail;
}
/* check version */
if (read_u32be(vag_offset + 0x04, sf) != 0x00000020)
goto fail;
channel_size = read_u32be(vag_offset + 0x0c, sf);
sample_rate = read_u32be(vag_offset + 0x10, sf);
start_offset = vag_offset + channels * 0x30;
loop_flag = 0;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channels, loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_PS2_VAGp_AAAP;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = ps_bytes_to_samples(channel_size, 1);
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = interleave;
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}