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vgmstream/src/meta/str_wav.c

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#include "meta.h"
#include "../coding/coding.h"
typedef enum { PSX, DSP, XBOX, WMA, IMA, XMA2 } strwav_codec;
typedef struct {
int32_t channels;
int32_t sample_rate;
int32_t num_samples;
int32_t loop_start;
int32_t loop_end;
int32_t loop_flag;
size_t interleave;
off_t coefs_offset;
off_t dsps_table;
off_t coefs_table;
uint32_t flags;
strwav_codec codec;
} strwav_header;
static int parse_header(STREAMFILE* streamHeader, strwav_header* strwav);
/* STR+WAV - Blitz Games streams+header */
VGMSTREAM * init_vgmstream_str_wav(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
STREAMFILE * streamHeader = NULL;
strwav_header strwav = {0};
off_t start_offset;
/* checks */
if (!check_extensions(streamFile, "str,data"))
goto fail;
/* get external header (extracted with filenames from bigfiles) */
{
/* try body+header combos:
* - file.wav.str=body + file.wav=header [common]
* - file.wma.str + file.wma [Fuzion Frenzy (Xbox)]
* - file.data + file (extensionless) [SpongeBob's Surf & Skate Roadtrip (X360)] */
char basename[PATH_LIMIT];
get_streamfile_basename(streamFile,basename,PATH_LIMIT);
streamHeader = open_streamfile_by_filename(streamFile, basename);
if (!streamHeader) {
/* try again with file.str=body + file.wav=header [Bad Boys II (PS2), Zapper (PS2)] */
streamHeader = open_streamfile_by_ext(streamFile, "wav");
if (!streamHeader) {
/* try again with file.str=body + file.sth=header (renamed/fake extension) */
streamHeader = open_streamfile_by_ext(streamFile, "sth");
if (!streamHeader) goto fail;
}
}
else {
/* header must have known extensions */
if (!check_extensions(streamHeader, "wav,wma,"))
goto fail;
}
}
/* detect version */
if (!parse_header(streamHeader, &strwav))
goto fail;
if (strwav.flags == 0)
goto fail;
if (strwav.channels > 8)
goto fail;
/* &0x01: loop?, &0x02: non-mono?, &0x04: stream???, &0x08: unused? */
if (strwav.flags > 0x07) {
VGM_LOG("STR+WAV: unknown flags\n");
goto fail;
}
start_offset = 0x00;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(strwav.channels,strwav.loop_flag);
if (!vgmstream) goto fail;
vgmstream->sample_rate = strwav.sample_rate;
vgmstream->num_samples = strwav.num_samples;
if (strwav.loop_flag) {
vgmstream->loop_start_sample = strwav.loop_start;
vgmstream->loop_end_sample = strwav.loop_end;
}
vgmstream->meta_type = meta_STR_WAV;
switch(strwav.codec) {
case PSX:
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = strwav.interleave;
break;
case DSP:
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = strwav.interleave;
/* get coefs */
{
int i, ch;
for (ch = 0; ch < vgmstream->channels; ch++) {
for (i = 0; i < 16; i++) {
off_t coef_offset;
if (strwav.dsps_table) /* mini table with offsets to DSP headers */
coef_offset = read_32bitBE(strwav.dsps_table+0x04*ch,streamHeader) + 0x1c;
else if (strwav.coefs_table) /* mini table with offsets to coefs then header */
coef_offset = read_32bitBE(strwav.coefs_table+0x04*ch,streamHeader);
else
coef_offset = strwav.coefs_offset + 0x60*ch;
vgmstream->ch[ch].adpcm_coef[i] = read_16bitBE(coef_offset+i*0x02,streamHeader);
}
}
}
break;
case XBOX:
vgmstream->coding_type = coding_XBOX_IMA;
vgmstream->layout_type = layout_interleave; /* interleaved stereo for >2ch*/
vgmstream->interleave_block_size = strwav.interleave;
if (vgmstream->channels > 2 && vgmstream->channels % 2 != 0)
goto fail; /* only 2ch+..+2ch layout is known */
break;
case IMA:
vgmstream->coding_type = coding_BLITZ_IMA;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = strwav.interleave;
break;
#ifdef VGM_USE_FFMPEG
case WMA: {
ffmpeg_codec_data *ffmpeg_data = NULL;
ffmpeg_data = init_ffmpeg_offset(streamFile, start_offset,get_streamfile_size(streamFile));
if (!ffmpeg_data) goto fail;
vgmstream->codec_data = ffmpeg_data;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
vgmstream->num_samples = ffmpeg_data->totalSamples;
if (vgmstream->channels != ffmpeg_data->channels)
goto fail;
break;
}
#endif
#ifdef VGM_USE_FFMPEG
case XMA2: {
uint8_t buf[0x100];
size_t stream_size;
size_t bytes, block_size, block_count;
stream_size = get_streamfile_size(streamFile);
block_size = 0x10000;
block_count = stream_size / block_size; /* not accurate? */
bytes = ffmpeg_make_riff_xma2(buf,0x100, strwav.num_samples, stream_size, strwav.channels, strwav.sample_rate, block_count, block_size);
vgmstream->codec_data = init_ffmpeg_header_offset(streamFile, buf,bytes, 0x00,stream_size);
if (!vgmstream->codec_data) goto fail;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
xma_fix_raw_samples(vgmstream, streamFile, 0x00,stream_size, 0, 0,0);
break;
}
#endif
default:
goto fail;
}
if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
goto fail;
close_streamfile(streamHeader);
return vgmstream;
fail:
close_streamfile(streamHeader);
close_vgmstream(vgmstream);
return NULL;
}
/* Parse header versions. Almost every game uses its own variation (struct serialization?),
* so detection could be improved once enough versions are known. */
static int parse_header(STREAMFILE* streamHeader, strwav_header* strwav) {
size_t header_size;
if (read_32bitBE(0x00,streamHeader) != 0x00000000)
goto fail;
header_size = get_streamfile_size(streamHeader);
//todo loop start/end values may be off for some headers
/* Fuzion Frenzy (Xbox)[2001] wma */
if ( read_32bitBE(0x04,streamHeader) == 0x00000900 &&
read_32bitLE(0x20,streamHeader) == 0 && /* no num_samples */
read_32bitLE(0x24,streamHeader) == read_32bitLE(0x80,streamHeader) && /* sample rate repeat */
read_32bitLE(0x28,streamHeader) == 0x10 &&
header_size == 0x110 /* no value in header */
) {
strwav->num_samples = read_32bitLE(0x20,streamHeader); /* 0 but will be rectified later */
strwav->sample_rate = read_32bitLE(0x24,streamHeader);
strwav->flags = read_32bitLE(0x2c,streamHeader);
strwav->loop_start = 0;
strwav->loop_end = 0;
strwav->channels = read_32bitLE(0x60,streamHeader) * (strwav->flags & 0x02 ? 2 : 1); /* tracks of 2/1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = 0;
strwav->codec = WMA;
//;VGM_LOG("STR+WAV: header Fuzion Frenzy (Xbox)\n");
return 1;
}
/* Taz: Wanted (GC)[2002] */
/* Cubix Robots for Everyone: Showdown (GC)[2003] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000900 &&
read_32bitBE(0x24,streamHeader) == read_32bitBE(0x90,streamHeader) && /* sample rate repeat */
read_32bitBE(0x28,streamHeader) == 0x10 &&
read_32bitBE(0xa0,streamHeader) == header_size /* ~0x3C0 */
) {
strwav->num_samples = read_32bitBE(0x20,streamHeader);
strwav->sample_rate = read_32bitBE(0x24,streamHeader);
strwav->flags = read_32bitBE(0x2c,streamHeader);
strwav->loop_start = read_32bitBE(0xb8,streamHeader);
strwav->loop_end = read_32bitBE(0xbc,streamHeader);
strwav->channels = read_32bitBE(0x50,streamHeader) * (strwav->flags & 0x02 ? 2 : 1); /* tracks of 2/1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 2 ? 0x8000 : 0x10000;
strwav->coefs_offset = 0xdc;
strwav->codec = DSP;
//;VGM_LOG("STR+WAV: header Taz: Wanted (GC)\n");
return 1;
}
/* The Fairly OddParents - Breakin' da Rules (Xbox)[2003] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000900 &&
read_32bitLE(0x24,streamHeader) == read_32bitLE(0xb0,streamHeader) && /* sample rate repeat */
read_32bitLE(0x28,streamHeader) == 0x10 &&
read_32bitLE(0xc0,streamHeader)*0x04 + read_32bitLE(0xc4,streamHeader) == header_size /* ~0xe0 + variable */
) {
strwav->num_samples = read_32bitLE(0x20,streamHeader);
strwav->sample_rate = read_32bitLE(0x24,streamHeader);
strwav->flags = read_32bitLE(0x2c,streamHeader);
strwav->loop_start = read_32bitLE(0x38,streamHeader);
strwav->loop_end = strwav->num_samples;
strwav->channels = read_32bitLE(0x70,streamHeader) * (strwav->flags & 0x02 ? 2 : 1); /* tracks of 2/1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = 0xD800/2;
strwav->codec = XBOX;
//;VGM_LOG("STR+WAV: header The Fairly OddParents (Xbox)\n");
return 1;
}
/* Bad Boys II (GC)[2004] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000800 &&
read_32bitBE(0x24,streamHeader) == read_32bitBE(0xb0,streamHeader) && /* sample rate repeat */
read_32bitBE(0x24,streamHeader) == read_32bitBE(read_32bitBE(0xe0,streamHeader)+0x08,streamHeader) && /* sample rate vs 1st DSP header */
read_32bitBE(0x28,streamHeader) == 0x10 &&
read_32bitBE(0xc0,streamHeader)*0x04 + read_32bitBE(0xc4,streamHeader) == header_size /* variable + variable */
) {
strwav->num_samples = read_32bitBE(0x20,streamHeader);
strwav->sample_rate = read_32bitBE(0x24,streamHeader);
strwav->flags = read_32bitBE(0x2c,streamHeader);
strwav->loop_start = read_32bitBE(0xd8,streamHeader);
strwav->loop_end = read_32bitBE(0xdc,streamHeader);
strwav->channels = read_32bitBE(0x70,streamHeader) * read_32bitBE(0x88,streamHeader); /* tracks of Nch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 2 ? 0x8000 : 0x10000;
strwav->dsps_table = 0xe0;
strwav->codec = DSP;
//;VGM_LOG("STR+WAV: header Bad Boys II (GC)\n");
return 1;
}
/* Bad Boys II (PS2)[2004] */
/* Pac-Man World 3 (PS2)[2005] */
if ((read_32bitBE(0x04,streamHeader) == 0x00000800 ||
read_32bitBE(0x04,streamHeader) == 0x01000800) && /* rare (PW3 mu_spectral1_explore_2) */
read_32bitLE(0x24,streamHeader) == read_32bitLE(0x70,streamHeader) && /* sample rate repeat */
read_32bitLE(0x28,streamHeader) == 0x10 &&
read_32bitLE(0x78,streamHeader)*0x04 + read_32bitLE(0x7c,streamHeader) == header_size /* ~0xe0 + variable */
) {
strwav->num_samples = read_32bitLE(0x20,streamHeader);
strwav->sample_rate = read_32bitLE(0x24,streamHeader);
strwav->flags = read_32bitLE(0x2c,streamHeader);
strwav->loop_start = read_32bitLE(0x38,streamHeader);
strwav->interleave = read_32bitLE(0x40,streamHeader) == 1 ? 0x8000 : 0x4000;
strwav->loop_end = read_32bitLE(0x54,streamHeader);
strwav->channels = read_32bitLE(0x40,streamHeader) * (strwav->flags & 0x02 ? 2 : 1); /* tracks of 2/1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 2 ? 0x4000 : 0x8000;
strwav->codec = PSX;
//;VGM_LOG("STR+WAV: header Bad Boys II (PS2)\n");
return 1;
}
/* Zapper: One Wicked Cricket! (PS2)[2005] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000900 &&
read_32bitLE(0x24,streamHeader) == read_32bitLE(0x70,streamHeader) && /* sample rate repeat */
read_32bitLE(0x28,streamHeader) == 0x10 &&
read_32bitLE(0x7c,streamHeader) == header_size /* ~0xD0 */
) {
strwav->num_samples = read_32bitLE(0x20,streamHeader);
strwav->sample_rate = read_32bitLE(0x24,streamHeader);
strwav->flags = read_32bitLE(0x2c,streamHeader);
strwav->loop_start = read_32bitLE(0x38,streamHeader);
strwav->loop_end = read_32bitLE(0x54,streamHeader);
strwav->channels = read_32bitLE(0x40,streamHeader) * (strwav->flags & 0x02 ? 2 : 1); /* tracks of 2/1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 2 ? 0x4000 : 0x8000;
strwav->codec = PSX;
//;VGM_LOG("STR+WAV: header Zapper (PS2)\n");
return 1;
}
/* Zapper: One Wicked Cricket! (GC)[2005] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000900 &&
read_32bitBE(0x24,streamHeader) == read_32bitBE(0xB0,streamHeader) && /* sample rate repeat */
read_32bitBE(0x28,streamHeader) == 0x10 &&
read_32bitLE(0xc0,streamHeader) == header_size /* variable LE size */
) {
strwav->num_samples = read_32bitBE(0x20,streamHeader);
strwav->sample_rate = read_32bitBE(0x24,streamHeader);
strwav->flags = read_32bitBE(0x2c,streamHeader);
strwav->loop_start = read_32bitBE(0xd8,streamHeader);
strwav->loop_end = read_32bitBE(0xdc,streamHeader);
strwav->channels = read_32bitBE(0x70,streamHeader) * read_32bitBE(0x88,streamHeader); /* tracks of Nch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 2 ? 0x8000 : 0x10000;
strwav->dsps_table = 0xe0;
strwav->codec = DSP;
//;VGM_LOG("STR+WAV: header Zapper (GC)\n");
return 1;
}
/* Zapper: One Wicked Cricket! (PC)[2005] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000900 &&
read_32bitLE(0x24,streamHeader) == read_32bitLE(0x114,streamHeader) && /* sample rate repeat */
read_32bitLE(0x28,streamHeader) == 0x10 &&
read_32bitLE(0x12c,streamHeader) == header_size /* ~0x130 */
) {
strwav->num_samples = read_32bitLE(0x20,streamHeader);
strwav->sample_rate = read_32bitLE(0x24,streamHeader);
strwav->flags = read_32bitLE(0x2c,streamHeader);
strwav->loop_start = read_32bitLE(0x54,streamHeader);
strwav->loop_end = read_32bitLE(0x30,streamHeader);
strwav->channels = read_32bitLE(0xF8,streamHeader) * (strwav->flags & 0x02 ? 2 : 1); /* tracks of 2/1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 2 ? 0x8000 : 0x10000;
strwav->codec = IMA;
//;VGM_LOG("STR+WAV: header Zapper (PC)\n");
return 1;
}
/* Pac-Man World 3 (GC)[2005] */
/* SpongeBob SquarePants: Creature from the Krusty Krab (GC)[2006] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000800 &&
read_32bitBE(0x24,streamHeader) == read_32bitBE(0xb0,streamHeader) && /* sample rate repeat */
read_32bitBE(0x24,streamHeader) == read_32bitBE(read_32bitBE(0xf0,streamHeader)+0x08,streamHeader) && /* sample rate vs 1st DSP header */
read_32bitBE(0x28,streamHeader) == 0x10 &&
read_32bitBE(0xc0,streamHeader)*0x04 + read_32bitBE(0xc4,streamHeader) == read_32bitBE(0xe0,streamHeader) && /* main size */
(read_32bitBE(0xe0,streamHeader) + read_32bitBE(0xe4,streamHeader)*0x40 == header_size || /* main size + extradata 1 (config? PMW3 cs2.wav) */
read_32bitBE(0xe0,streamHeader) + read_32bitBE(0xe4,streamHeader)*0x08 == header_size) /* main size + extradata 2 (ids? SBSP 0_0_mu_hr.wav) */
) {
strwav->num_samples = read_32bitBE(0x20,streamHeader);
strwav->sample_rate = read_32bitBE(0x24,streamHeader);
strwav->flags = read_32bitBE(0x2c,streamHeader);
strwav->loop_start = read_32bitBE(0xd8,streamHeader);
strwav->loop_end = read_32bitBE(0xdc,streamHeader);
strwav->channels = read_32bitBE(0x70,streamHeader) * read_32bitBE(0x88,streamHeader); /* tracks of Nch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 2 ? 0x8000 : 0x10000;
strwav->dsps_table = 0xf0;
strwav->codec = DSP;
//;VGM_LOG("STR+WAV: header SpongeBob SquarePants (GC)\n");
return 1;
}
/* SpongeBob SquarePants: Creature from the Krusty Krab (PS2)[2006] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000800 &&
read_32bitLE(0x08,streamHeader) == 0x00000000 &&
read_32bitLE(0x0c,streamHeader) != header_size && /* some ID */
(header_size == 0x74 + read_32bitLE(0x64,streamHeader)*0x04 ||
header_size == 0x78 + read_32bitLE(0x64,streamHeader)*0x04)
) {
strwav->loop_start = read_32bitLE(0x24,streamHeader); //not ok?
strwav->num_samples = read_32bitLE(0x30,streamHeader);
strwav->loop_end = read_32bitLE(0x34,streamHeader);
strwav->sample_rate = read_32bitLE(0x38,streamHeader);
strwav->flags = read_32bitLE(0x3c,streamHeader);
strwav->channels = read_32bitLE(0x64,streamHeader); /* tracks of 1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 4 ? 0x4000 : 0x8000;
strwav->codec = PSX;
//;VGM_LOG("STR+WAV: header SpongeBob SquarePants (PS2)\n");
return 1;
}
/* Tak and the Guardians of Gross (PS2)[2008] */
if ( read_32bitBE(0x04,streamHeader) == 0x00000800 &&
read_32bitLE(0x08,streamHeader) != 0x00000000 &&
read_32bitLE(0x0c,streamHeader) == header_size && /* ~0x80+0x04*ch */
read_32bitLE(0x0c,streamHeader) == 0x80 + read_32bitLE(0x70,streamHeader)*0x04
) {
strwav->loop_start = read_32bitLE(0x24,streamHeader); //not ok?
strwav->num_samples = read_32bitLE(0x30,streamHeader);
strwav->loop_end = read_32bitLE(0x34,streamHeader);
strwav->sample_rate = read_32bitLE(0x38,streamHeader);
strwav->flags = read_32bitLE(0x3c,streamHeader);
strwav->channels = read_32bitLE(0x70,streamHeader); /* tracks of 1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 4 ? 0x4000 : 0x8000;
strwav->codec = PSX;
//;VGM_LOG("STR+WAV: header Tak (PS2)\n");
return 1;
}
/* Tak and the Guardians of Gross (Wii)[2008] */
/* The House of the Dead: Overkill (Wii)[2009] (not Blitz but still the same format) */
if ((read_32bitBE(0x04,streamHeader) == 0x00000800 ||
read_32bitBE(0x04,streamHeader) == 0x00000700) && /* rare? */
read_32bitLE(0x08,streamHeader) != 0x00000000 &&
read_32bitBE(0x0c,streamHeader) == header_size && /* variable per header */
read_32bitBE(0x7c,streamHeader) != 0 && /* has DSP header */
read_32bitBE(0x38,streamHeader) == read_32bitBE(read_32bitBE(0x7c,streamHeader)+0x38,streamHeader) /* sample rate vs 1st DSP header */
) {
strwav->loop_start = 0; //read_32bitLE(0x24,streamHeader); //not ok?
strwav->num_samples = read_32bitBE(0x30,streamHeader);
strwav->loop_end = read_32bitBE(0x34,streamHeader);
strwav->sample_rate = read_32bitBE(0x38,streamHeader);
strwav->flags = read_32bitBE(0x3c,streamHeader);
strwav->channels = read_32bitBE(0x70,streamHeader); /* tracks of 1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 4 ? 0x4000 : 0x8000;
strwav->coefs_table = 0x7c;
strwav->codec = DSP;
//;VGM_LOG("STR+WAV: header Tak/HOTD:O (Wii)\n");
return 1;
}
/* The House of the Dead: Overkill (PS3)[2009] (not Blitz but still the same format) */
if ((read_32bitBE(0x04,streamHeader) == 0x00000800 ||
read_32bitBE(0x04,streamHeader) == 0x00000700) && /* rare? */
read_32bitLE(0x08,streamHeader) != 0x00000000 &&
read_32bitBE(0x0c,streamHeader) == header_size && /* variable per header */
read_32bitBE(0x7c,streamHeader) == 0 /* not DSP header */
) {
strwav->loop_start = 0; //read_32bitLE(0x24,streamHeader); //not ok?
strwav->num_samples = read_32bitBE(0x30,streamHeader);
strwav->loop_end = read_32bitBE(0x34,streamHeader);
strwav->sample_rate = read_32bitBE(0x38,streamHeader);
strwav->flags = read_32bitBE(0x3c,streamHeader);
strwav->channels = read_32bitBE(0x70,streamHeader); /* tracks of 1ch */
strwav->loop_flag = strwav->flags & 0x01;
strwav->interleave = strwav->channels > 4 ? 0x4000 : 0x8000;
strwav->codec = PSX;
//;VGM_LOG("STR+WAV: header HOTD:O (PS3)\n");
return 1;
}
/* SpongeBob's Surf & Skate Roadtrip (X360)[2011] */
if ((read_32bitBE(0x04,streamHeader) == 0x00000800 || /* used? */
read_32bitBE(0x04,streamHeader) == 0x00000700) &&
read_32bitLE(0x08,streamHeader) != 0x00000000 &&
read_32bitBE(0x0c,streamHeader) == 0x124 && /* variable, not sure about final calc */
read_32bitBE(0x8c,streamHeader) == 0x180 /* encoder delay actually */
//0x4c is data_size + 0x210
) {
strwav->loop_start = 0; //read_32bitLE(0x24,streamHeader); //not ok?
strwav->num_samples = read_32bitBE(0x30,streamHeader);//todo sometimes wrong?
strwav->loop_end = read_32bitBE(0x34,streamHeader);
strwav->sample_rate = read_32bitBE(0x38,streamHeader);
strwav->flags = read_32bitBE(0x3c,streamHeader);
strwav->channels = read_32bitBE(0x70,streamHeader); /* multichannel XMA */
strwav->loop_flag = strwav->flags & 0x01;
strwav->codec = XMA2;
//;VGM_LOG("STR+WAV: header SBSSR (X360)\n");
return 1;
}
/* unknown */
goto fail;
fail:
return 0;
}
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