mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 09:55:53 +01:00
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
#include "meta.h"
|
|
#include "../coding/coding.h"
|
|
|
|
/* SVAG - from Konami Tokyo games [OZ (PS2), Neo Contra (PS2), Silent Hill 2 (PS2)] */
|
|
VGMSTREAM * init_vgmstream_ps2_svag(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
off_t start_offset;
|
|
size_t data_size;
|
|
int loop_flag, channel_count;
|
|
|
|
|
|
/* checks */
|
|
if (!check_extensions(streamFile, "svag"))
|
|
goto fail;
|
|
if (read_32bitBE(0x00,streamFile) != 0x53766167) /* "Svag" */
|
|
goto fail;
|
|
|
|
channel_count = read_16bitLE(0x0C,streamFile); /* always 2? ("S"tereo vag?) */
|
|
loop_flag = (read_32bitLE(0x14,streamFile)==1);
|
|
|
|
/* header repeated at 0x400 presumably for stereo */
|
|
if (channel_count > 1 && read_32bitBE(0x400,streamFile) != 0x53766167) /* "Svag" */
|
|
goto fail;
|
|
|
|
start_offset = 0x800;
|
|
data_size = read_32bitLE(0x04,streamFile);
|
|
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
vgmstream->sample_rate = read_32bitLE(0x08,streamFile);
|
|
|
|
vgmstream->num_samples = ps_bytes_to_samples(read_32bitLE(0x04,streamFile), vgmstream->channels);
|
|
if(vgmstream->loop_flag) {
|
|
vgmstream->loop_start_sample = ps_bytes_to_samples(read_32bitLE(0x18,streamFile)*vgmstream->channels, vgmstream->channels);
|
|
vgmstream->loop_end_sample = vgmstream->num_samples;
|
|
}
|
|
|
|
vgmstream->meta_type = meta_PS2_SVAG;
|
|
vgmstream->coding_type = coding_PSX;
|
|
vgmstream->layout_type = layout_interleave;
|
|
vgmstream->interleave_block_size = read_32bitLE(0x10,streamFile);
|
|
if (vgmstream->interleave_block_size)
|
|
vgmstream->interleave_last_block_size = (data_size % (vgmstream->interleave_block_size*vgmstream->channels)) / vgmstream->channels;
|
|
|
|
|
|
if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
|
|
goto fail;
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|