vgmstream/src/meta/ps2_ass.c
manakoAT 06e43e9c00 added new dsp type in .emff.c
added block format for gsp+gsb
cleaned some metas from useless stuff

git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@519 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
2008-12-16 15:48:21 +00:00

93 lines
2.7 KiB
C

#include "meta.h"
#include "../util.h"
/* SVS (from Dai Senryaku VII - Exceed) */
VGMSTREAM * init_vgmstream_ps2_ass(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[260];
off_t start_offset;
uint8_t testBuffer[0x10];
off_t loopStart = 0;
off_t loopEnd = 0;
off_t readOffset = 0;
size_t fileLength;
int loop_flag;
int channel_count;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("ass",filename_extension(filename))) goto fail;
/* check header */
if (read_32bitBE(0x00,streamFile) != 0x02000000) /* "0x02000000" */
goto fail;
loop_flag = 1;
channel_count = 2;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
start_offset = 0x800;
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bitLE(0x04,streamFile);
vgmstream->coding_type = coding_PSX;
vgmstream->num_samples = (read_32bitLE(0x08,streamFile)*2)*28/16/channel_count;
fileLength = get_streamfile_size(streamFile);
do {
readOffset+=(off_t)read_streamfile(testBuffer,readOffset,0x10,streamFile);
/* Loop Start */
if(testBuffer[0x01]==0x06) {
if(loopStart == 0) loopStart = readOffset-0x10;
/* break; */
}
/* Loop End */
if(testBuffer[0x01]==0x03) {
if(loopEnd == 0) loopEnd = readOffset-0x10;
/* break; */
}
} while (streamFile->get_offset(streamFile)<(int32_t)fileLength);
if(loopStart == 0) {
loop_flag = 0;
vgmstream->num_samples = read_32bitLE(0x4,streamFile)*28/16/channel_count;
} else {
loop_flag = 1;
vgmstream->loop_start_sample = (loopStart-start_offset)*28/16/channel_count;
vgmstream->loop_end_sample = (loopEnd-start_offset)*28/16/channel_count;
}
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = read_32bitLE(0x0C,streamFile);
vgmstream->meta_type = meta_PS2_ASS;
/* 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;
}