mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-22 11:25:53 +01:00
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
#include "meta.h"
|
|
#include "../coding/coding.h"
|
|
|
|
|
|
/* .NAAC - from Namco 3DS games (Ace Combat - Assault Horizon Legacy, Taiko no Tatsujin Don to Katsu no Jikuu Daibouken) */
|
|
VGMSTREAM* init_vgmstream_naac(STREAMFILE* sf) {
|
|
VGMSTREAM* vgmstream = NULL;
|
|
off_t start_offset;
|
|
int loop_flag, channels, skip_samples;
|
|
size_t data_size;
|
|
|
|
|
|
/* checks */
|
|
if (!check_extensions(sf,"naac"))
|
|
goto fail;
|
|
|
|
if (read_u32be(0x00,sf) != 0x41414320) /* "AAC " */
|
|
goto fail;
|
|
if (read_u32le(0x04,sf) != 0x01) /* version? */
|
|
goto fail;
|
|
|
|
start_offset = 0x1000;
|
|
loop_flag = (read_s32le(0x18,sf) != 0);
|
|
channels = read_s32le(0x08,sf);
|
|
skip_samples = 1024; /* raw AAC doesn't set this */
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channels, loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
vgmstream->sample_rate = read_s32le(0x0c,sf);
|
|
vgmstream->num_samples = read_s32le(0x10,sf); /* without skip_samples */
|
|
vgmstream->loop_start_sample = read_s32le(0x14,sf); /* with skip_samples */
|
|
vgmstream->loop_end_sample = read_s32le(0x18,sf) + 1; /* without skip_samples */
|
|
/* 0x1c: loop start offset */
|
|
/* 0x20: loop end offset (within data) */
|
|
data_size = read_u32le(0x24,sf);
|
|
/* 0x28: unknown */
|
|
/* 0x2c: table start offset? */
|
|
/* 0x30: seek table (always 0xFD0, padded) */
|
|
|
|
vgmstream->meta_type = meta_NAAC;
|
|
|
|
#ifdef VGM_USE_FFMPEG
|
|
{
|
|
vgmstream->codec_data = init_ffmpeg_aac(sf, start_offset, data_size, skip_samples);
|
|
if (!vgmstream->codec_data) goto fail;
|
|
vgmstream->coding_type = coding_FFmpeg;
|
|
vgmstream->layout_type = layout_none;
|
|
|
|
/* observed default, some files start without silence though seems correct when loop_start=0 */
|
|
vgmstream->num_samples -= skip_samples;
|
|
vgmstream->loop_end_sample -= skip_samples;
|
|
/* for some reason last frame is ignored/bugged in various decoders (gives EOF errors) */
|
|
}
|
|
#else
|
|
goto fail;
|
|
#endif
|
|
|
|
if (!vgmstream_open_stream(vgmstream, sf, start_offset))
|
|
goto fail;
|
|
return vgmstream;
|
|
|
|
fail:
|
|
close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|