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vgmstream/src/meta/zsnd.c

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C
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#include "meta.h"
#include "../coding/coding.h"
#include "zsnd_streamfile.h"
/* ZSND - Z-Axis/Vicarious Visions games [X-Men Legends II (multi), Marvel Ultimate Alliance (multi)] */
VGMSTREAM * init_vgmstream_zsnd(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
STREAMFILE *temp_streamFile = NULL;
off_t start_offset, name_offset;
size_t stream_size, name_size;
int loop_flag, channel_count, sample_rate, layers, layers2 = 0;
uint32_t codec;
int total_subsongs, target_subsong = streamFile->stream_index;
int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
/* checks */
/* .zss/zsm: standard
* .ens/enm: same for PS2
* .zsd: normal or compact [BMX XXX (Xbox), Aggresive Inline (Xbox)] */
if (!check_extensions(streamFile, "zss,zsm,ens,enm,zsd"))
goto fail;
if (read_32bitBE(0x00,streamFile) != 0x5A534E44) /* "ZSND" */
goto fail;
/* probably zss=stream, zsm=memory; no diffs other than size */
codec = read_32bitBE(0x04,streamFile);
/* 0x08: file size, but slightly bigger (+0x01~04) in some platforms */
/* 0x0c: header end/first stream start (unneeded as all offsets are absolute) */
if (codec == 0x47435542) { /* "GCUB" */
read_32bit = read_32bitBE;
read_16bit = read_16bitBE;
}
else {
read_32bit = read_32bitLE;
read_16bit = read_16bitLE;
}
/* parse header tables */
{
off_t header2_offset, header3_offset;
int table2_entries, table3_entries;
off_t table2_body, table3_body;
int is_v1, i;
/* multiple config tables:
* 0x00: entries
* 0x04: table head offset
* 0x08: table body offset
*
* table heads are 0x08 * entries:
* 0x00 = id? (crc-like, varies between tables but consistent between platforms)
* 0x04 = entry? (number, also in table2_body?)
*
* main tables:
* table1: stream cues? (entry=0x18)
* table2: stream heads (optional, rarely not all stream bodies may have heads)
* table3: stream body
* table4: unknown, very rare, some kind of seek table with numbers going up? (Aggresive Inline: speech01.zsd)
* table5: unknown, very rare, (X-Men Legends II: boss4_m.zsm)
* table6/7: not seen
*
* table1 may have more entries than table2/3, and sometimes isn't set
*/
/* V1 has no table heads, rare [Aggresive Inline (Xbox)]
* no apparent flag but we can test if table heads offsets appear */
is_v1 = read_32bit(0x14,streamFile) <= read_32bit(0x1c,streamFile) &&
read_32bit(0x1c,streamFile) <= read_32bit(0x24,streamFile) &&
read_32bit(0x24,streamFile) <= read_32bit(0x2c,streamFile) &&
read_32bit(0x2c,streamFile) <= read_32bit(0x34,streamFile) &&
read_32bit(0x34,streamFile) <= read_32bit(0x3c,streamFile) &&
read_32bit(0x3c,streamFile) <= read_32bit(0x44,streamFile);
if (!is_v1) {
table2_entries = read_32bit(0x1c,streamFile);
table2_body = read_32bit(0x24,streamFile);
table3_entries = read_32bit(0x28,streamFile);
table3_body = read_32bit(0x30,streamFile);
}
else {
table2_entries = read_32bit(0x18,streamFile);
table2_body = read_32bit(0x1C,streamFile);
table3_entries = read_32bit(0x20,streamFile);
table3_body = read_32bit(0x24,streamFile);
}
total_subsongs = table3_entries;
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
switch (codec) {
case 0x50432020: /* "PC " */
if (table2_entries == 0) goto fail;
header2_offset = table2_body + 0x18*(target_subsong-1);
layers = read_16bit(header2_offset + 0x02,streamFile);
sample_rate = read_32bit(header2_offset + 0x04,streamFile);
header3_offset = table3_body + 0x4c*(target_subsong-1);
start_offset = read_32bit(header3_offset + 0x00,streamFile);
stream_size = read_32bit(header3_offset + 0x04,streamFile);
name_offset = header3_offset + 0x0c;
name_size = 0x40;
break;
case 0x58424F58: { /* "XBOX" */
size_t entry2_size = is_v1 || check_extensions(streamFile, "zsd") ? 0x14 : 0x1c;
/* BMX has unordered stream headers, and not every stream has a header */
header2_offset = 0;
for (i = 0; i < table2_entries; i++) {
int16_t id = read_16bit(table2_body + entry2_size*i + 0x00,streamFile);
if (id >= 0 && id + 1 != target_subsong) /* can be -1 == deleted entry */
continue;
header2_offset = table2_body + entry2_size*i;
break;
}
if (header2_offset == 0) {
if (table2_entries > 0) {
/* seems usable for sfx, meh */
header2_offset = table2_body + entry2_size*0;
layers = read_16bit(header2_offset + 0x02,streamFile);
sample_rate = read_32bit(header2_offset + 0x04,streamFile);
}
else {
layers = 0;
sample_rate = 0;
}
}
else {
layers = read_16bit(header2_offset + 0x02,streamFile);
sample_rate = read_32bit(header2_offset + 0x04,streamFile);
if (entry2_size > 0x18) {
layers2 = read_32bit(header2_offset + 0x18,streamFile);
}
}
header3_offset = table3_body + 0x54*(target_subsong-1);
start_offset = read_32bit(header3_offset + 0x00,streamFile);
stream_size = read_32bit(header3_offset + 0x04,streamFile);
/* 0x08: flags? related to looping? (not channels) */
//loop_end = read_32bit(header3_offset + 0x10,streamFile);
name_offset = header3_offset + 0x14;
name_size = 0x40;
/* early games sometimes don't seem to have info or headers, not sure how to detect better
* ex. Aggresive Inline speech (1ch) vs music (2ch), or BMX cutscenes (2ch) */
if (sample_rate == 0) {
int is_music = 0;
if (is_v1) {
char filename[PATH_LIMIT];
/* stream length isn't enough */
get_streamfile_filename(streamFile, filename, sizeof(filename));
is_music = strcmp(filename, "music.zsd") == 0;
}
else {
is_music = stream_size > 0x20000;
}
if (is_music) {
layers = 0x02;
sample_rate = 44100;
}
else {
layers = 0x00;
sample_rate = is_v1 ? 16000 : 22050; /* some BMX need 16000 but can't detect? */
}
}
break;
}
case 0x50533220: /* "PS2 " (also for PSP) */
if (table2_entries == 0) goto fail;
header2_offset = table2_body + 0x10*(target_subsong-1);
sample_rate = read_16bit(header2_offset + 0x02,streamFile);
layers = read_16bit(header2_offset + 0x04,streamFile);
header3_offset = table3_body + 0x08*(target_subsong-1);
start_offset = read_32bit(header3_offset + 0x00,streamFile);
stream_size = read_32bit(header3_offset + 0x04,streamFile);
name_offset = 0;
name_size = 0;
//TODO: possibly pitch: sample_rate = round10(pitch * 44100 / 4096);
switch(sample_rate) {
case 0x0800: sample_rate = 22050; break;
case 0x0687: sample_rate = 18000; break;
case 0x05ce: sample_rate = 16000; break;
case 0x0400: sample_rate = 11025; break;
default:
VGM_LOG("ZSND: unknown sample_rate %x at %x\n", sample_rate, (uint32_t)header2_offset);
goto fail;
}
break;
case 0x47435542: /* "GCUB" (also for Wii) */
header2_offset = table2_body + 0x18*(target_subsong-1);
layers = read_16bit(header2_offset + 0x02,streamFile);
sample_rate = read_32bit(header2_offset + 0x04,streamFile);
header3_offset = table3_body + 0x0c*(target_subsong-1);
start_offset = read_32bit(header3_offset + 0x00,streamFile);
stream_size = read_32bit(header3_offset + 0x04,streamFile);
/* 0x08: "DSP " for some reason */
name_offset = 0;
name_size = 0;
break;
default:
goto fail;
}
/* maybe flags? */
switch (layers) {
case 0x00: channel_count = 1; break;
case 0x01: channel_count = 1; break; /* set when looping? */
case 0x02: channel_count = 2; break;
case 0x22: channel_count = 4; break;
default:
VGM_LOG("ZSND: unknown layers\n");
goto fail;
}
if (layers2) {
channel_count = channel_count * layers2;
}
loop_flag = 0;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count, loop_flag);
if (!vgmstream) goto fail;
vgmstream->meta_type = meta_ZSND;
vgmstream->sample_rate = sample_rate;
switch (codec) {
case 0x50432020: /* "PC " */
vgmstream->coding_type = coding_IMA;
vgmstream->layout_type = layout_none;
//todo interleaved stereo (needs to adapt decoder)
//vgmstream->layout_type = layout_interleave; /* interleaved stereo for >2ch*/
//vgmstream->interleave_block_size = 0x2000 * 2 / channel_count;
vgmstream->num_samples = ima_bytes_to_samples(stream_size, channel_count);
break;
case 0x58424F58: /* "XBOX" */
vgmstream->coding_type = coding_XBOX_IMA;
vgmstream->layout_type = layout_interleave; /* interleaved stereo for >2ch*/
vgmstream->interleave_block_size = 0x9000 * 2 / channel_count;
vgmstream->num_samples = xbox_ima_bytes_to_samples(stream_size, channel_count);
/* very rarely entries refer to external .wma, but redoing the logic to handle only real
* streams handle is a pain, so signal this case with an empty file [Aggresive Inline (Xbox)] */
if (vgmstream->num_samples == 0) {
vgmstream->num_samples = 48;
}
break;
case 0x50533220: /* "PS2 " (also for PSP) */
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x800;
vgmstream->num_samples = ps_bytes_to_samples(stream_size, channel_count);
break;
case 0x47435542: /* "GCUB" (also for Wii) */
vgmstream->coding_type = coding_NGC_DSP;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x8000;
/* has a full DSP header, but num_samples may vary slighly between channels, so calc manually */
dsp_read_coefs_be(vgmstream, streamFile, start_offset+0x1c,0x60);
dsp_read_hist_be(vgmstream, streamFile, start_offset+0x40, 0x60);
start_offset += 0x60*channel_count;
stream_size -= 0x60*channel_count;
vgmstream->num_samples = dsp_bytes_to_samples(stream_size, channel_count);
break;
default:
goto fail;
}
vgmstream->num_streams = total_subsongs;
vgmstream->stream_size = stream_size;
if (name_offset) {
read_string(vgmstream->stream_name,name_size, name_offset,streamFile);
}
temp_streamFile = setup_zsnd_streamfile(streamFile, start_offset, stream_size); /* fixes last interleave reads */
if (!temp_streamFile) goto fail;
if (!vgmstream_open_stream(vgmstream,temp_streamFile,start_offset))
goto fail;
close_streamfile(temp_streamFile);
return vgmstream;
fail:
close_streamfile(temp_streamFile);
close_vgmstream(vgmstream);
return NULL;
}
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