mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 09:55:53 +01:00
69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
|
#include "meta.h"
|
||
|
|
#include "../coding/coding.h"
|
||
|
|
|
||
|
|
|
||
|
|
/* PCM - from Success (related) games [Metal Saga (PS2), Tetris Kiwamemichi (PS2), Duel Masters: Rebirth of Super Dragon (PS2)] */
|
||
|
|
VGMSTREAM* init_vgmstream_pcm_success(STREAMFILE* sf) {
|
||
|
|
VGMSTREAM* vgmstream = NULL;
|
||
|
|
off_t start_offset;
|
||
|
|
int loop_flag, channels, sample_rate, interleave;
|
||
|
|
size_t data_size, loop_start, loop_end, loop_adjust;
|
||
|
|
|
||
|
|
|
||
|
|
/* checks */
|
||
|
|
if (!check_extensions(sf, "pcm"))
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
if (read_u32be(0x00,sf) != 0x50434D20) /* "PCM " */
|
||
|
|
goto fail;
|
||
|
|
if (read_u32le(0x04,sf) != 0x00010000) /* version? */
|
||
|
|
goto fail;
|
||
|
|
if (read_u32le(0x08,sf) + 0x8000 < get_streamfile_size(sf)) /* data size without padding */
|
||
|
|
goto fail;
|
||
|
|
|
||
|
|
interleave = 0x800;
|
||
|
|
start_offset = 0x800;
|
||
|
|
|
||
|
|
sample_rate = read_s32le(0x0c,sf);
|
||
|
|
channels = read_s32le(0x10,sf);
|
||
|
|
loop_flag = read_s32le(0x14,sf);
|
||
|
|
|
||
|
|
data_size = read_s32le(0x18,sf) * interleave * channels;
|
||
|
|
/* loops seems slightly off, so 'adjust' meaning may need to be tweaked */
|
||
|
|
loop_adjust = read_s32le(0x1c,sf) * channels; /* from 0..<0x800 */
|
||
|
|
loop_start = read_s32le(0x20,sf) * interleave * channels + loop_adjust;
|
||
|
|
loop_adjust = read_s32le(0x24,sf) * channels; /* always 0x800 (0 if no loop flag) */
|
||
|
|
loop_end = read_s32le(0x28,sf) * interleave * channels + (interleave * channels - loop_adjust);
|
||
|
|
|
||
|
|
/* 0x2c: always 1? */
|
||
|
|
/* 0x30/40: padding garbage (also at file end) */
|
||
|
|
|
||
|
|
/* not always accurate and has padding */
|
||
|
|
if (data_size > get_streamfile_size(sf) - start_offset)
|
||
|
|
data_size = get_streamfile_size(sf) - start_offset;
|
||
|
|
|
||
|
|
|
||
|
|
/* build the VGMSTREAM */
|
||
|
|
vgmstream = allocate_vgmstream(channels, loop_flag);
|
||
|
|
if (!vgmstream) goto fail;
|
||
|
|
|
||
|
|
vgmstream->meta_type = meta_PCM_SUCCESS;
|
||
|
|
vgmstream->sample_rate = sample_rate;
|
||
|
|
|
||
|
|
vgmstream->num_samples = ps_bytes_to_samples(data_size, channels);
|
||
|
|
vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start, channels);
|
||
|
|
vgmstream->loop_end_sample = ps_bytes_to_samples(loop_end, channels);
|
||
|
|
|
||
|
|
vgmstream->coding_type = coding_PSX;
|
||
|
|
vgmstream->layout_type = layout_interleave;
|
||
|
|
vgmstream->interleave_block_size = interleave;
|
||
|
|
|
||
|
|
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
|
||
|
|
goto fail;
|
||
|
|
return vgmstream;
|
||
|
|
|
||
|
|
fail:
|
||
|
|
close_vgmstream(vgmstream);
|
||
|
|
return NULL;
|
||
|
|
}
|