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#include "meta.h"
#include "../util.h"
/* PSH (from Dawn of Mana - Seiken Densetsu 4) */
/* probably Square Vag Stream */
VGMSTREAM * init_vgmstream_ps2_psh(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[260];
off_t start_offset;
uint8_t testBuffer[0x10];
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("psh",filename_extension(filename))) goto fail;
/* check header */
if (read_16bitBE(0x02,streamFile) != 0x6400)
goto fail;
loop_flag = (read_16bitLE(0x06,streamFile)!=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 = 0;
vgmstream->channels = channel_count;
vgmstream->sample_rate = (uint16_t)read_16bitLE(0x08,streamFile);
vgmstream->coding_type = coding_PSX;
vgmstream->num_samples = (uint16_t)read_16bitLE(0x0C,streamFile)*0x800*28/16/channel_count;
// loop end is set by the loop marker which we need to find ...
// there's some extra data on unloop files, so we calculate
// the sample count with loop marker on this files
fileLength = get_streamfile_size(streamFile);
do {
readOffset+=(off_t)read_streamfile(testBuffer,readOffset,0x10,streamFile);
// Loop End ...
if(testBuffer[0x01]==0x03) {
if(loopEnd==0) loopEnd = readOffset-0x10;
break;
}
} while (streamFile->get_offset(streamFile)<(int32_t)fileLength);
if(loopEnd!=0)
vgmstream->num_samples = loopEnd*28/16/channel_count;
if(loop_flag) {
vgmstream->loop_start_sample =
((uint16_t)read_16bitLE(0x06,streamFile)-0x8000)*0x400*28/16;
vgmstream->loop_end_sample=vgmstream->num_samples;
}
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x800;
vgmstream->meta_type = meta_PS2_PSH;
/* 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;
}
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