mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 23:52:53 +01:00
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
|
#include "afc_header.h"
|
||
|
|
#include "../util.h"
|
||
|
|
|
||
|
|
VGMSTREAM * init_vgmstream_afc(const char * const filename) {
|
||
|
|
VGMSTREAM * vgmstream = NULL;
|
||
|
|
STREAMFILE * infile = NULL;
|
||
|
|
|
||
|
|
int loop_flag;
|
||
|
|
const int channel_count = 2; /* .afc seems to be stereo only */
|
||
|
|
|
||
|
|
/* check extension, case insensitive */
|
||
|
|
if (strcasecmp("afc",filename_extension(filename))) goto fail;
|
||
|
|
|
||
|
|
/* try to open the file for header reading */
|
||
|
|
infile = open_streamfile(filename);
|
||
|
|
if (!infile) goto fail;
|
||
|
|
|
||
|
|
/* we will get a sample rate, that's as close to checking as I think
|
||
|
|
* we can get */
|
||
|
|
|
||
|
|
/* build the VGMSTREAM */
|
||
|
|
|
||
|
|
loop_flag = read_32bitBE(0x10,infile);
|
||
|
|
|
||
|
|
vgmstream = allocate_vgmstream(channel_count,loop_flag);
|
||
|
|
if (!vgmstream) goto fail;
|
||
|
|
|
||
|
|
/* fill in the vital statistics */
|
||
|
|
vgmstream->num_samples = read_32bitBE(0x04,infile);
|
||
|
|
vgmstream->sample_rate = read_16bitBE(0x08,infile);
|
||
|
|
/* channels and loop flag are set by allocate_vgmstream */
|
||
|
|
vgmstream->loop_start_sample = read_32bitBE(0x14,infile);
|
||
|
|
vgmstream->loop_end_sample = vgmstream->num_samples;
|
||
|
|
|
||
|
|
vgmstream->coding_type = coding_NGC_AFC;
|
||
|
|
vgmstream->layout_type = layout_interleave;
|
||
|
|
vgmstream->meta_type = meta_AFC;
|
||
|
|
|
||
|
|
/* frame-level interleave (9 bytes) */
|
||
|
|
vgmstream->interleave_block_size = 9;
|
||
|
|
|
||
|
|
close_streamfile(infile); infile=NULL;
|
||
|
|
|
||
|
|
/* open the file for reading by each channel */
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
for (i=0;i<channel_count;i++) {
|
||
|
|
vgmstream->ch[i].streamfile = open_streamfile_buffer(filename,9*0x400);
|
||
|
|
|
||
|
|
if (!vgmstream->ch[i].streamfile) goto fail;
|
||
|
|
|
||
|
|
vgmstream->ch[i].channel_start_offset=
|
||
|
|
vgmstream->ch[i].offset=
|
||
|
|
0x20 + i*vgmstream->interleave_block_size;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return vgmstream;
|
||
|
|
|
||
|
|
/* clean up anything we may have opened */
|
||
|
|
fail:
|
||
|
|
if (infile) close_streamfile(infile);
|
||
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
||
|
|
return NULL;
|
||
|
|
}
|