mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-22 11:25:53 +01:00
97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
#include "meta.h"
|
|
#include "../util.h"
|
|
|
|
/* SSM (Golden Gashbell Full Power GC) */
|
|
VGMSTREAM * init_vgmstream_ngc_ssm(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
char filename[PATH_LIMIT];
|
|
off_t start_offset;
|
|
int loop_flag;
|
|
int channel_count;
|
|
int coef1_start;
|
|
int coef2_start;
|
|
int second_channel_start;
|
|
|
|
streamFile->get_name(streamFile,filename,sizeof(filename));
|
|
if (strcasecmp("ssm",filename_extension(filename)))
|
|
goto fail;
|
|
|
|
/* check header */
|
|
#if 0
|
|
if (read_32bitBE(0x00,streamFile) != 0x0)
|
|
goto fail;
|
|
#endif
|
|
|
|
loop_flag = (uint32_t)read_16bitBE(0x18,streamFile);
|
|
channel_count = read_32bitBE(0x10,streamFile);
|
|
|
|
/* build the VGMSTREAM */
|
|
vgmstream = allocate_vgmstream(channel_count,loop_flag);
|
|
if (!vgmstream) goto fail;
|
|
|
|
/* fill in the vital statistics */
|
|
start_offset = read_32bitBE(0x0,streamFile);
|
|
vgmstream->channels = channel_count;
|
|
vgmstream->sample_rate = read_32bitBE(0x14,streamFile);
|
|
vgmstream->coding_type = coding_NGC_DSP;
|
|
vgmstream->num_samples = read_32bitBE(0x04,streamFile)*14/8/channel_count;
|
|
if (loop_flag) {
|
|
vgmstream->loop_start_sample = read_32bitBE(0x24,streamFile)*14/8/channel_count;
|
|
vgmstream->loop_end_sample = read_32bitBE(0x20,streamFile)*14/8/channel_count;
|
|
}
|
|
vgmstream->layout_type = layout_none;
|
|
vgmstream->meta_type = meta_NGC_SSM;
|
|
|
|
/* Retrieveing the coef tables and the start of the second channel*/
|
|
coef1_start = 0x28;
|
|
coef2_start = 0x68;
|
|
second_channel_start = (read_32bitBE(0x04,streamFile)/2)+start_offset;
|
|
|
|
{
|
|
int i;
|
|
for (i=0;i<16;i++)
|
|
vgmstream->ch[0].adpcm_coef[i] = read_16bitBE(coef1_start+i*2,streamFile);
|
|
if (channel_count == 2) {
|
|
for (i=0;i<16;i++)
|
|
vgmstream->ch[1].adpcm_coef[i] = read_16bitBE(coef2_start+i*2,streamFile);
|
|
}
|
|
}
|
|
|
|
|
|
/* open the file for reading */
|
|
{
|
|
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;
|
|
|
|
/* The first channel */
|
|
vgmstream->ch[0].channel_start_offset=
|
|
vgmstream->ch[0].offset=start_offset;
|
|
|
|
/* The second channel */
|
|
if (channel_count == 2) {
|
|
vgmstream->ch[1].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
|
|
|
|
if (!vgmstream->ch[1].streamfile) goto fail;
|
|
|
|
vgmstream->ch[1].channel_start_offset=
|
|
vgmstream->ch[1].offset=second_channel_start;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
return vgmstream;
|
|
|
|
/* clean up anything we may have opened */
|
|
fail:
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|