vgmstream/src/meta/ps2_strlr.c

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#include "meta.h"
#include "../layout/layout.h"
#include "../util.h"
/* STR: The Bouncer (PS2) */
VGMSTREAM * init_vgmstream_ps2_strlr(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
int loop_flag = 0;
int channel_count;
int i;
off_t start_offset;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("str",filename_extension(filename))) goto fail;
#if 0
/* check header */
if (read_32bitBE(0x00,streamFile) != 0x5354524C) /* "STRL" */
goto fail;
if (read_32bitBE(0x00,streamFile) != 0x53545252) /* "STRR" */
goto fail;
#endif
/* don't hijack Sonic & Sega All Stars Racing X360 (xma) */
if (read_32bitBE(0x00,streamFile) == 0x52494646)
goto fail; /* "RIFF"*/
/* don't hijack Mad Dash Racing (Xbox) */
if (read_32bitLE(0x0c,streamFile) == 1
&& read_32bitLE(0x010,streamFile) == 0
&& read_32bitLE(0x400,streamFile) == 0
&& read_32bitLE(0x7f0,streamFile) == 0)
goto fail;
loop_flag = 0;
channel_count = 2;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
start_offset = 0x0;
vgmstream->channels = channel_count;
vgmstream->sample_rate = 48000;
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_ps2_strlr_blocked;
//vgmstream->interleave_block_size = read_32bitLE(0xC, streamFile);
vgmstream->meta_type = meta_PS2_STRLR;
/* open the file for reading by each channel */
{
for (i=0;i<channel_count;i++)
{
vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename, 0x8000);
if (!vgmstream->ch[i].streamfile) goto fail;
}
}
/* Calc num_samples */
ps2_strlr_block_update(start_offset, vgmstream);
vgmstream->num_samples=0;
do
{
vgmstream->num_samples += vgmstream->current_block_size * 14 / 16;
ps2_strlr_block_update(vgmstream->next_block_offset, vgmstream);
} while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
ps2_strlr_block_update(start_offset, vgmstream);
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}