mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-12 14:51:05 +01:00
94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
#include "meta.h"
|
|
#include "../util.h"
|
|
|
|
/* ZWDSP (hcs' custom DSP files from Zack & Wiki) */
|
|
VGMSTREAM * init_vgmstream_zwdsp(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
char filename[PATH_LIMIT];
|
|
int second_channel_start;
|
|
int loop_flag;
|
|
int channel_count = 2;
|
|
off_t start_offset;
|
|
|
|
/* check extension, case insensitive */
|
|
streamFile->get_name(streamFile,filename,sizeof(filename));
|
|
if (strcasecmp("zwdsp",filename_extension(filename))) goto fail;
|
|
|
|
/* check header */
|
|
if (read_32bitBE(0x00,streamFile) != 0x00000000) /* 0x0 */
|
|
goto fail;
|
|
|
|
/* Retrieve the loop flag, some files have 0x0 and some 0x02 as "no loop" */
|
|
|
|
switch (read_32bitBE(0x10, streamFile)) {
|
|
case 0:
|
|
case 2:
|
|
loop_flag = 0;
|
|
break;
|
|
default:
|
|
loop_flag = 1;
|
|
}
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
/* fill in the vital statistics */
|
|
start_offset = 0x90;
|
|
vgmstream->channels = channel_count;
|
|
vgmstream->sample_rate = read_32bitBE(0x08,streamFile);
|
|
vgmstream->coding_type = coding_NGC_DSP;
|
|
vgmstream->num_samples = read_32bitBE(0x18,streamFile)*14/8/channel_count;
|
|
if (loop_flag) {
|
|
vgmstream->loop_start_sample = read_32bitBE(0x10,streamFile)*14/8/channel_count;
|
|
vgmstream->loop_end_sample = read_32bitBE(0x14,streamFile)*14/8/channel_count;
|
|
// frequently end sample is one more than total samples in file
|
|
if (vgmstream->loop_end_sample > vgmstream->num_samples)
|
|
{
|
|
vgmstream->loop_end_sample = vgmstream->num_samples;
|
|
}
|
|
}
|
|
|
|
|
|
vgmstream->layout_type = layout_none;
|
|
vgmstream->meta_type = meta_ZWDSP;
|
|
|
|
|
|
if (vgmstream->coding_type == coding_NGC_DSP) {
|
|
int i;
|
|
for (i=0;i<16;i++) {
|
|
vgmstream->ch[0].adpcm_coef[i] = read_16bitBE(0x20+i*2,streamFile);
|
|
}
|
|
if (vgmstream->channels == 2) {
|
|
for (i=0;i<16;i++) {
|
|
vgmstream->ch[1].adpcm_coef[i] = read_16bitBE(0x60+i*2,streamFile);
|
|
}
|
|
}
|
|
}
|
|
|
|
second_channel_start = (get_streamfile_size(streamFile)+start_offset)/2;
|
|
{
|
|
int i;
|
|
STREAMFILE * file;
|
|
file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
|
|
if (!file) goto fail;
|
|
for (i=0;i<channel_count;i++) {
|
|
vgmstream->ch[i].streamfile = file;
|
|
|
|
vgmstream->ch[0].channel_start_offset=start_offset;
|
|
if (channel_count == 2) {
|
|
if (second_channel_start == -1) goto fail;
|
|
vgmstream->ch[1].channel_start_offset=second_channel_start;
|
|
}
|
|
vgmstream->ch[i].offset = vgmstream->ch[i].channel_start_offset;
|
|
}
|
|
}
|
|
|
|
return vgmstream;
|
|
|
|
/* clean up anything we may have opened */
|
|
fail:
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|