vgmstream/src/meta/psnd.c
2024-01-20 18:15:24 +01:00

75 lines
2.1 KiB
C

#include "meta.h"
#include "../coding/coding.h"
/* PSND - from Polarbit games [Crash Bandicoot Nitro Kart 3D/2 (iOS), Reckless Racing 2 (Android/iOS)] */
VGMSTREAM* init_vgmstream_psnd(STREAMFILE* sf) {
VGMSTREAM* vgmstream = NULL;
uint32_t start_offset, data_size, type;
int loop_flag, channels, sample_rate;
/* checks */
if (!is_id32be(0x00,sf, "PSND"))
return NULL;
/* .psn: actual extension in exes */
if (!check_extensions(sf, "psn"))
return NULL;
data_size = read_u32le(0x04, sf); /* after this field */
type = read_u32le(0x08,sf);
sample_rate = read_u16le(0x0c,sf);
switch (type) {
case 0x0030006: /* CBNK */
channels = read_u8(0xE,sf);
if (read_u8(0x0f, sf) != 16) goto fail; /* bps */
start_offset = 0x10;
break;
case 0x0000004: /* RR */
channels = 1;
start_offset = 0x0e;
break;
default:
goto fail;
}
data_size = data_size + 0x08 - start_offset;
loop_flag = 0; /* generally 22050hz music loops */
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channels, loop_flag);
if (!vgmstream) goto fail;
vgmstream->sample_rate = sample_rate;
switch (type) {
case 0x0030006:
vgmstream->coding_type = coding_PCM16LE;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x02;
vgmstream->num_samples = pcm16_bytes_to_samples(data_size, channels);
break;
case 0x0000004:
vgmstream->coding_type = coding_DVI_IMA;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = ima_bytes_to_samples(data_size, channels);
break;
default:
goto fail;
}
vgmstream->loop_start_sample = 0;
vgmstream->loop_end_sample = vgmstream->num_samples;
vgmstream->meta_type = meta_PSND;
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}