mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 23:52:53 +01:00
c433b3046f
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@257 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
#include "meta.h"
|
|
#include "../util.h"
|
|
|
|
VGMSTREAM * init_vgmstream_ps2_bmdx(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
char filename[260];
|
|
|
|
int loop_flag=0;
|
|
int channel_count;
|
|
off_t start_offset;
|
|
int i;
|
|
|
|
/* check extension, case insensitive */
|
|
streamFile->get_name(streamFile,filename,sizeof(filename));
|
|
if (strcasecmp("bmdx",filename_extension(filename))) goto fail;
|
|
|
|
/* check NPSF Header */
|
|
if (read_32bitBE(0x00,streamFile) != 0x01006408 ||
|
|
read_32bitBE(0x04,streamFile) != 0)
|
|
goto fail;
|
|
|
|
/* check loop */
|
|
loop_flag = (read_32bitLE(0x10,streamFile)!=0);
|
|
channel_count=read_32bitLE(0x1C,streamFile);
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
|
|
/* fill in the vital statistics */
|
|
vgmstream->channels = channel_count;
|
|
vgmstream->sample_rate = read_32bitLE(0x18,streamFile);
|
|
|
|
/* Check for Compression Scheme */
|
|
if (read_32bitLE(0x20,streamFile) == 1)
|
|
vgmstream->coding_type = coding_invert_PSX;
|
|
else
|
|
vgmstream->coding_type = coding_PSX;
|
|
vgmstream->num_samples = read_32bitLE(0x0c,streamFile)*28/16/channel_count;
|
|
|
|
/* Get loop point values */
|
|
if(vgmstream->loop_flag) {
|
|
vgmstream->loop_start_sample = read_32bitLE(0x10,streamFile)*28/16/channel_count;
|
|
vgmstream->loop_end_sample = vgmstream->num_samples;
|
|
}
|
|
|
|
vgmstream->interleave_block_size = read_32bitLE(0x24,streamFile);
|
|
vgmstream->layout_type = layout_interleave;
|
|
vgmstream->meta_type = meta_PS2_BMDX;
|
|
|
|
start_offset = read_32bitLE(0x08,streamFile);
|
|
|
|
/* open the file for reading by each channel */
|
|
{
|
|
for (i=0;i<channel_count;i++) {
|
|
if (!vgmstream->ch[0].streamfile) {
|
|
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,0x8000);
|
|
}
|
|
vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
|
|
|
|
if (!vgmstream->ch[i].streamfile) goto fail;
|
|
|
|
vgmstream->ch[i].channel_start_offset=
|
|
vgmstream->ch[i].offset=
|
|
(off_t)(start_offset+vgmstream->interleave_block_size*i);
|
|
}
|
|
}
|
|
|
|
|
|
return vgmstream;
|
|
|
|
/* clean up anything we may have opened */
|
|
fail:
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|