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Added .swag [Frantix PSP]

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This commit is contained in:
bnnm 2017-01-08 12:03:31 +01:00
parent 86ba7a6a23
commit 4e6ce8747d
3 changed files with 69 additions and 52 deletions
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1
src/formats.c
View File

@ -247,6 +247,7 @@ static const char* extension_list[] = {
"stx",
"svag",
"svs",
"swag",
"swav",
"swd",

21
src/header.c
View File

@ -42,24 +42,39 @@ int header_open_stream(VGMSTREAM * vgmstream, STREAMFILE *streamFile, off_t star
STREAMFILE * file;
char filename[PATH_LIMIT];
int ch;
int buffer_size = STREAMFILE_DEFAULT_BUFFER_SIZE;
#ifdef VGM_USE_FFMPEG
if (vgmstream->coding_type == coding_FFmpeg) /* not needed */
return 1;
#endif
streamFile->get_name(streamFile,filename,sizeof(filename));
/* minor optimizations */
if (vgmstream->layout_type == layout_interleave
&&vgmstream->interleave_block_size > 0
&& vgmstream->interleave_block_size > buffer_size) {
buffer_size = vgmstream->interleave_block_size;
}
if (buffer_size > 0x8000) {
buffer_size = 0x8000;
/* todo if interleave is big enough open one streamfile per channel so each uses it's own buffer */
}
streamFile->get_name(streamFile,filename,sizeof(filename));
/* open the file for reading by each channel */
{
file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
file = streamFile->open(streamFile,filename,buffer_size);
if (!file) return 0;
for (ch=0; ch < vgmstream->channels; ch++) {
vgmstream->ch[ch].streamfile = file;
if (vgmstream->layout_type == layout_none
#ifdef VGM_USE_MPEG
|| vgmstream->layout_type == layout_mpeg
|| vgmstream->layout_type == layout_mpeg //todo simplify using flag "start offset"
#endif
) { /* no appreciable difference for mpeg */
/* for some codecs like IMA where channels work with the same bytes */

99
src/meta/ps2_vag.c
View File

@ -1,5 +1,6 @@
#include "meta.h"
#include "../util.h"
#include "../header.h"
static int vag_find_loop_offsets(STREAMFILE *streamFile, off_t start_offset, off_t * loop_start, off_t * loop_end);
@ -9,26 +10,23 @@ static int vag_find_loop_offsets(STREAMFILE *streamFile, off_t start_offset, off
*/
VGMSTREAM * init_vgmstream_ps2_vag(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
off_t loopStart = 0;
off_t loopEnd = 0;
off_t start_offset, loopStart = 0, loopEnd = 0;
uint8_t vagID;
uint32_t version = 0;
size_t filesize = 0, datasize = 0;
size_t interleave;
off_t start_offset;
int loop_flag=0;
int loop_samples_found = 0;
int channel_count=0;
int i;
size_t filesize = 0, datasize = 0, interleave;
int loop_flag = 0, loop_samples_found = 0;
int channel_count = 0;
int is_swag = 0;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("vag",filename_extension(filename))) goto fail;
if ( !header_check_extensions(streamFile,"vag,swag") )
goto fail;
/* Frantix VAGp .swag: some (not all) fields in LE + 2 VAGp in the same file (full interleave) */
is_swag = header_check_extensions(streamFile,"swag");
/* check VAG Header */
if (((read_32bitBE(0x00,streamFile) & 0xFFFFFF00) != 0x56414700) && /* "VAG\0" */
@ -41,7 +39,10 @@ VGMSTREAM * init_vgmstream_ps2_vag(STREAMFILE *streamFile) {
* ex: 00000000 = v1.8 PC, 00000002 = v1.3 Mac, 00000003 = v1.6+ Mac, 00000020 = v2.0+ PC */
version = read_32bitBE(0x04,streamFile);
/* 0x08-0c: reserved */
datasize = read_32bitBE(0x0c,streamFile);
if (is_swag)
datasize = read_32bitLE(0x0c,streamFile);
else
datasize = read_32bitBE(0x0c,streamFile);
/* 0x14-20 reserved */
/* 0x20-30: name (optional) */
/* 0x30: data start (first 0x10 usually 0s to init SPU) */
@ -66,8 +67,11 @@ VGMSTREAM * init_vgmstream_ps2_vag(STREAMFILE *streamFile) {
break;
case 'p': /* "VAGp" (extended) [most common, ex Ratchet & Clank] */
if ((version <= 0x00000004) && (datasize < filesize / 2)) {
loop_flag=(read_32bitBE(0x14,streamFile)!=0);
if ((version <= 0x00000004) && (datasize < filesize / 2)) { /* two VAGp in the same file */
if (is_swag)
loop_flag = vag_find_loop_offsets(streamFile, 0x30, &loopStart, &loopEnd);
else
loop_flag = read_32bitBE(0x14,streamFile) != 0;
channel_count=2;
}
else if (version == 0x00020001) { /* HEVAG */
@ -91,7 +95,10 @@ VGMSTREAM * init_vgmstream_ps2_vag(STREAMFILE *streamFile) {
/* fill in the vital statistics */
vgmstream->coding_type = coding_PSX;
vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
if (is_swag)
vgmstream->sample_rate = read_32bitLE(0x10,streamFile);
else
vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
switch(vagID) {
case '1': // VAG1
@ -121,23 +128,31 @@ VGMSTREAM * init_vgmstream_ps2_vag(STREAMFILE *streamFile) {
if ((version == 0x00000004) && (datasize < filesize / 2)) {
vgmstream->channels=2;
vgmstream->num_samples = datasize; /* todo test if datasize/16*28? */
if(loop_flag) {
vgmstream->loop_start_sample=read_32bitBE(0x14,streamFile);
vgmstream->loop_end_sample =read_32bitBE(0x18,streamFile);
loop_samples_found = 1;
}
start_offset=0x80;
vgmstream->layout_type=layout_interleave;
vgmstream->meta_type=meta_PS2_VAGs;
// Double VAG Header @ 0x0000 & 0x1000
if(read_32bitBE(0,streamFile)==read_32bitBE(0x1000,streamFile)) {
if (is_swag) {
start_offset = 0x30;
interleave = datasize;
vgmstream->num_samples = datasize / 16 * 28;
interleave=0x1000;
start_offset=0;
vgmstream->loop_start_sample = (loopStart-start_offset) / 16 * 28;
vgmstream->loop_end_sample = (loopEnd-start_offset) / 16 * 28;
loop_samples_found = 1;
} else {
start_offset=0x80;
vgmstream->num_samples = datasize; /* todo test if datasize/16*28? */
if(loop_flag) {
vgmstream->loop_start_sample=read_32bitBE(0x14,streamFile);
vgmstream->loop_end_sample =read_32bitBE(0x18,streamFile);
loop_samples_found = 1;
// Double VAG Header @ 0x0000 & 0x1000
if(read_32bitBE(0,streamFile)==read_32bitBE(0x1000,streamFile)) {
vgmstream->num_samples = datasize / 16 * 28;
interleave=0x1000;
start_offset=0;
}
}
}
}
else if (version == 0x40000000) { /* Guerilla VAG (little endian) */
@ -195,28 +210,14 @@ VGMSTREAM * init_vgmstream_ps2_vag(STREAMFILE *streamFile) {
}
/* open the file for reading by each channel */
{
for (i=0;i<channel_count;i++) {
if (vgmstream->interleave_block_size > 0) {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,vgmstream->interleave_block_size);
} else {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
}
if (!vgmstream->ch[i].streamfile) goto fail;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=
(off_t)(start_offset+vgmstream->interleave_block_size*i);
}
}
/* open the file for reading */
if ( !header_open_stream(vgmstream, streamFile, start_offset) )
goto fail;
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
close_vgmstream(vgmstream);
return NULL;
}