vgmstream/src/meta/lsf.c
2011-01-13 08:11:58 +00:00

60 lines
1.6 KiB
C

#include "meta.h"
#include "../util.h"
/* .lsf - Fastlane Street Racing (iPhone) */
/* "!n1nj4n" */
VGMSTREAM * init_vgmstream_lsf_n1nj4n(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[260];
size_t file_size;
off_t start_offset;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("lsf",filename_extension(filename))) goto fail;
/* check header */
if (read_32bitBE(0x0, streamFile) != 0x216E316E || // "!n1n"
read_32bitBE(0x4, streamFile) != 0x6A346E00) // "j4n\0"
goto fail;
/* check size */
file_size = get_streamfile_size(streamFile);
if (read_32bitLE(0xC, streamFile) + 0x10 != file_size)
goto fail;
start_offset = 0x10;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(1,0);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = (file_size-0x10)/0x1c*0x1b*2;
vgmstream->sample_rate = read_32bitLE(0x8, streamFile);
vgmstream->coding_type = coding_LSF;
vgmstream->layout_type = layout_none;
vgmstream->meta_type = meta_LSF_N1NJ4N;
/* open the file for reading */
{
vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!vgmstream->ch[0].streamfile) goto fail;
vgmstream->ch[0].channel_start_offset=
vgmstream->ch[0].offset=start_offset;
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}