vgmstream/src/meta/sps_n1.c

80 lines
2.6 KiB
C
Raw Normal View History

#include "meta.h"
#include "../coding/coding.h"
static STREAMFILE* setup_sps_streamfile(STREAMFILE *streamfile, off_t subfile_offset, size_t subfile_size, char* extension);
/* .SPS - Nippon Ichi's RIFF AT3 wrapper [ClaDun (PSP)] */
VGMSTREAM * init_vgmstream_sps_n1(STREAMFILE *streamFile) {
VGMSTREAM *vgmstream = NULL;
STREAMFILE *temp_streamFile = NULL;
int type, sample_rate;
off_t subfile_offset;
size_t subfile_size;
/* check extensions */
if ( !check_extensions(streamFile,"sps"))
goto fail;
/* mini header */
type = read_32bitLE(0x00,streamFile); //todo channels? all known VAG are mono and AT3 stereo
subfile_size = read_32bitLE(0x04,streamFile);
sample_rate = (uint16_t)read_16bitLE(0x08,streamFile);
/* 0x0a/0b: stereo+loop flags? */
//num_samples = read_32bitLE(0x0c,streamFile);
subfile_offset = 0x10;
/* init the VGMSTREAM */
switch(type) {
case 1: /* .vag */
temp_streamFile = setup_sps_streamfile(streamFile, subfile_offset, subfile_size, "vag");
if (!temp_streamFile) goto fail;
vgmstream = init_vgmstream_ps2_vag(temp_streamFile);
if (!vgmstream) goto fail;
break;
case 2: /* .at3 */
temp_streamFile = setup_sps_streamfile(streamFile, subfile_offset, subfile_size, "at3");
if (!temp_streamFile) goto fail;
2018-01-27 12:24:35 +01:00
vgmstream = init_vgmstream_riff(temp_streamFile);
if (!vgmstream) goto fail;
break;
default:
goto fail;
}
vgmstream->sample_rate = sample_rate; /* .vag header doesn't match */
close_streamfile(temp_streamFile);
return vgmstream;
fail:
close_streamfile(temp_streamFile);
close_vgmstream(vgmstream);
return NULL;
}
static STREAMFILE* setup_sps_streamfile(STREAMFILE *streamFile, off_t subfile_offset, size_t subfile_size, char* extension) {
STREAMFILE *temp_streamFile = NULL, *new_streamFile = NULL;
/* setup subfile */
new_streamFile = open_wrap_streamfile(streamFile);
if (!new_streamFile) goto fail;
temp_streamFile = new_streamFile;
new_streamFile = open_clamp_streamfile(temp_streamFile, subfile_offset,subfile_size);
if (!new_streamFile) goto fail;
temp_streamFile = new_streamFile;
new_streamFile = open_fakename_streamfile(temp_streamFile, NULL,extension);
if (!new_streamFile) goto fail;
temp_streamFile = new_streamFile;
return temp_streamFile;
fail:
close_streamfile(temp_streamFile);
return NULL;
}