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vgmstream/src/meta/zsnd.c

225 lines
8.8 KiB
C
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#include "meta.h"
#include "../coding/coding.h"
#include "zsnd_streamfile.h"
/* ZSND - 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;
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 */
if (!check_extensions(streamFile, "zss,zsm,ens,enm"))
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 (7*0x0c) */
{
off_t header2_offset, header3_offset;
/* table2: stream head */
int table2_entries = read_32bit(0x1c,streamFile);
//off_t table2_head = read_32bit(0x20,streamFile);
off_t table2_body = read_32bit(0x24,streamFile);
/* table3: stream body */
int table3_entries = read_32bit(0x28,streamFile);
//off_t table3_head = read_32bit(0x2c,streamFile);
off_t table3_body = read_32bit(0x30,streamFile);
/* table1: stream cues? (entry=0x18)
* tables 4-7 seem reserved with 0 entries and offsets to header end,
* though table5 can be seen in boss4_m.zsm (1 entry) */
/* table heads are always 0x08 * entries */
/* 0x00 = ? (varies between tables but consistent between platforms) */
/* 0x04 = id? (also in table2_body at 0x00?) */
/* table1 may have more entries than table2/3 */
if (table2_entries != table3_entries) {
VGM_LOG("ZSND: table2/3 entries don't match\n");
goto fail;
}
total_subsongs = table2_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 " */
header2_offset = table2_body + 0x18*(target_subsong-1);
header3_offset = table3_body + 0x4c*(target_subsong-1);
layers = read_16bit(header2_offset + 0x02,streamFile);
sample_rate = read_32bit(header2_offset + 0x04,streamFile);
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" */
header2_offset = table2_body + 0x1c*(target_subsong-1);
header3_offset = table3_body + 0x54*(target_subsong-1);
layers = read_16bit(header2_offset + 0x02,streamFile);
sample_rate = read_32bit(header2_offset + 0x04,streamFile);
start_offset = read_32bit(header3_offset + 0x00,streamFile);
stream_size = read_32bit(header3_offset + 0x04,streamFile);
name_offset = header3_offset + 0x14;
name_size = 0x40;
break;
case 0x50533220: /* "PS2 " (also for PSP) */
header2_offset = table2_body + 0x10*(target_subsong-1);
header3_offset = table3_body + 0x08*(target_subsong-1);
sample_rate = read_16bit(header2_offset + 0x02,streamFile);
layers = read_16bit(header2_offset + 0x04,streamFile);
start_offset = read_32bit(header3_offset + 0x00,streamFile);
stream_size = read_32bit(header3_offset + 0x04,streamFile);
name_offset = 0;
name_size = 0;
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);
header3_offset = table3_body + 0x0c*(target_subsong-1);
layers = read_16bit(header2_offset + 0x02,streamFile);
sample_rate = read_32bit(header2_offset + 0x04,streamFile);
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; /* related to looping? */
case 0x02: channel_count = 2; break;
case 0x22: channel_count = 4; break;
default:
VGM_LOG("ZSND: unknown layers\n");
goto fail;
}
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);
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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