mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 15:21:04 +01:00
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
#include "meta.h"
|
|
#include "../util.h"
|
|
|
|
/* TEC (from TECMO games) */
|
|
/* probably TECMO Vag Stream */
|
|
VGMSTREAM * init_vgmstream_ps2_tec(STREAMFILE *streamFile) {
|
|
VGMSTREAM * vgmstream = NULL;
|
|
char filename[PATH_LIMIT];
|
|
int loop_flag;
|
|
int channel_count;
|
|
int current_chunk;
|
|
off_t start_offset;
|
|
int dataBuffer = 0;
|
|
int Founddata = 0;
|
|
|
|
/* check extension, case insensitive */
|
|
streamFile->get_name(streamFile,filename,sizeof(filename));
|
|
if (strcasecmp("tec",filename_extension(filename))) 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 = 44100;
|
|
vgmstream->coding_type = coding_PSX_badflags;
|
|
vgmstream->num_samples = get_streamfile_size(streamFile)*28/16/channel_count;
|
|
if (loop_flag) {
|
|
vgmstream->loop_start_sample = 0;
|
|
vgmstream->loop_end_sample = get_streamfile_size(streamFile)*28/16/channel_count;
|
|
}
|
|
|
|
// Check the first frame header (should be always zero)
|
|
if ((uint8_t)(read_8bit(0x00,streamFile) != 0x0))
|
|
goto fail;
|
|
|
|
// Scan for Interleave
|
|
{
|
|
current_chunk = 16;
|
|
while (!Founddata && current_chunk < 65536) {
|
|
dataBuffer = (uint8_t)(read_8bit(current_chunk,streamFile));
|
|
if (dataBuffer == 0x0) { /* "0x0" */
|
|
Founddata = 1;
|
|
break;
|
|
}
|
|
current_chunk = current_chunk + 16;
|
|
}
|
|
}
|
|
|
|
// Cancel if we can't find an interleave
|
|
if (Founddata == 0) {
|
|
goto fail;
|
|
} else if (Founddata == 1) {
|
|
vgmstream->layout_type = layout_interleave;
|
|
vgmstream->interleave_block_size = current_chunk;
|
|
}
|
|
|
|
// Cancel if the first flag isn't invalid/bad
|
|
if ((uint8_t)(read_8bit(0x01,streamFile) == 0x0))
|
|
goto fail;
|
|
if ((uint8_t)(read_8bit(0x01+current_chunk,streamFile) == 0x0))
|
|
goto fail;
|
|
|
|
vgmstream->meta_type = meta_PS2_TEC;
|
|
|
|
/* 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;
|
|
|
|
vgmstream->ch[i].channel_start_offset=
|
|
vgmstream->ch[i].offset=start_offset+
|
|
vgmstream->interleave_block_size*i;
|
|
|
|
}
|
|
}
|
|
|
|
return vgmstream;
|
|
|
|
/* clean up anything we may have opened */
|
|
fail:
|
|
if (vgmstream) close_vgmstream(vgmstream);
|
|
return NULL;
|
|
}
|