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Improve .sts+int/.x [Shadow of the Colossus (PS2), Ape Escape 3 (PS2)]

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This commit is contained in:
bnnm 2018-08-16 20:06:57 +02:00
parent 7734e4d87f
commit b71d568acb
2 changed files with 45 additions and 55 deletions
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5
src/formats.c
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@ -429,6 +429,7 @@ static const char* extension_list[] = {
"wve",
"wvs",
"x",
"xa",
"xa2",
"xa30",
@ -689,10 +690,10 @@ static const meta_info meta_info_list[] = {
{meta_FWAV, "Nintendo FWAV header"},
{meta_PSX_XA, "RIFF/CDXA header"},
{meta_PS2_RXWS, "Sony RXWS header"},
{meta_PS2_RAW, "assumed RAW Interleaved PCM by .int extension"},
{meta_PS2_RAW, ".int PCM raw header"},
{meta_PS2_OMU, "Alter Echo OMU Header"},
{meta_DSP_STM, "Nintendo STM header"},
{meta_PS2_EXST, "EXST header"},
{meta_PS2_EXST, "Sony EXST header"},
{meta_PS2_SVAG, "Konami SVAG header"},
{meta_PS2_MIB, "Headerless/MIB PS-ADPCM raw header"},
{meta_PS2_MIB_MIH, "Sony MultiStream MIH+MIB header"},

95
src/meta/ps2_exst.c
View File

@ -1,79 +1,68 @@
#include "meta.h"
#include "../util.h"
#include "../coding/coding.h"
/* EXST
PS2 INT format is an interleaved format found in Shadow of the Colossus
The header start with a EXST id.
The headers and bgm datas was separated in the game, and joined in order
to add support for vgmstream
The interleave value is allways 0x400
known extensions : .STS
2008-05-13 - Fastelbja : First version ...
*/
/* EXST - from Sony games [Shadow of the Colossus (PS2), Gacha Mecha Stadium Saru Battle (PS2)] */
VGMSTREAM * init_vgmstream_ps2_exst(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
STREAMFILE * streamBody = NULL;
off_t start_offset;
int loop_flag, channel_count;
size_t block_size, num_blocks, loop_start_block;
int loop_flag=0;
int channel_count;
int i;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("sts",filename_extension(filename))) goto fail;
/* check EXST Header */
if (read_32bitBE(0x00,streamFile) != 0x45585354)
/* checks */
/* .sts+int: main [Shadow of the Colossus (PS2)] (some .sts have manually joined header+body)
* .x: header+body [Ape Escape 3 (PS2)] */
if (!check_extensions(streamFile, "sts,x"))
goto fail;
if (read_32bitBE(0x00,streamFile) != 0x45585354) /* "EXST" */
goto fail;
/* check loop */
loop_flag = (read_32bitLE(0x0C,streamFile)==1);
streamBody = open_streamfile_by_ext(streamFile,"int");
if (!streamBody) {
/* data+body joined */
start_offset = 0x78;
if (get_streamfile_size(streamFile) < start_offset)
goto fail;
}
else {
/* body is separate */
start_offset = 0x00;
}
channel_count = read_16bitLE(0x06,streamFile);
loop_flag = read_32bitLE(0x0C,streamFile) == 1;
loop_start_block = read_32bitLE(0x10,streamFile);
num_blocks = read_32bitLE(0x14,streamFile);
channel_count=read_16bitLE(0x06,streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->channels = read_16bitLE(0x06,streamFile);
vgmstream->sample_rate = read_32bitLE(0x08,streamFile);
/* Compression Scheme */
vgmstream->coding_type = coding_PSX;
vgmstream->num_samples = (read_32bitLE(0x14,streamFile)*0x400)/16*28;
/* Get loop point values */
if(vgmstream->loop_flag) {
vgmstream->loop_start_sample = (read_32bitLE(0x10,streamFile)*0x400)/16*28;
vgmstream->loop_end_sample = (read_32bitLE(0x14,streamFile)*0x400)/16*28;
}
vgmstream->interleave_block_size = 0x400;
vgmstream->layout_type = layout_interleave;
vgmstream->meta_type = meta_PS2_EXST;
/* open the file for reading by each channel */
{
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,0x8000);
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x400;
if (!vgmstream->ch[i].streamfile) goto fail;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=
(off_t)(0x78+vgmstream->interleave_block_size*i);
}
block_size = vgmstream->interleave_block_size * vgmstream->channels;
vgmstream->num_samples = ps_bytes_to_samples(num_blocks*block_size, channel_count);
if (vgmstream->loop_flag) {
vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start_block*block_size, channel_count);;
vgmstream->loop_end_sample = vgmstream->num_samples;
}
if (!vgmstream_open_stream(vgmstream,streamBody ? streamBody : streamFile,start_offset))
goto fail;
close_streamfile(streamBody);
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
close_streamfile(streamBody);
close_vgmstream(vgmstream);
return NULL;
}