mirror of
https://github.com/vgmstream/vgmstream.git
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88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
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#include "meta.h"
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#include "../util.h"
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/* STS
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STS (found in Shikigami No Shiro 3)
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Don't confuse with ps2 .STS (EXST) format, this one is for WII
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*/
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VGMSTREAM * init_vgmstream_wii_sts(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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int loop_flag=0;
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int channel_count;
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int i,j;
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off_t start_offset;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("sts",filename_extension(filename))) goto fail;
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/* First bytes contain the size of the file (-4) */
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if(read_32bitBE(0x0,streamFile)!=get_streamfile_size(streamFile)-4)
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goto fail;
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loop_flag = (read_32bitLE(0x4C,streamFile)!=0xFFFFFFFF);
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channel_count=read_8bit(0x8,streamFile)+1;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count,loop_flag);
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if (!vgmstream) goto fail;
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/* fill in the vital statistics */
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitBE(0x0A,streamFile);
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vgmstream->coding_type = coding_NGC_DSP;
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if(vgmstream->channels==1)
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vgmstream->num_samples = (read_32bitBE(0x0,streamFile)+4-0x70)/8*14;
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else
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vgmstream->num_samples = (read_32bitBE(0x0,streamFile)+4-0x50-0x26)/8*14/2;
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vgmstream->layout_type = layout_none;
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vgmstream->meta_type = meta_STS_WII;
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if(loop_flag) {
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vgmstream->loop_start_sample=read_32bitLE(0x24,streamFile);
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vgmstream->loop_end_sample=vgmstream->num_samples;
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}
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/* setting coef tables */
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if(vgmstream->channels==1)
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start_offset = 0x70;
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else
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start_offset = 0x50;
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// First channel
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for(j=0;j<16;j++) {
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vgmstream->ch[0].adpcm_coef[j]=read_16bitBE(0x1E+(j*2),streamFile);
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}
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// Second channel ?
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if(vgmstream->channels==2) {
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start_offset+=read_32bitBE(0x1a,streamFile);
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for(j=0;j<16;j++) {
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vgmstream->ch[1].adpcm_coef[j]=read_16bitBE(start_offset+(j*2),streamFile);
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}
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}
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/* open the file for reading by each channel */
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{
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,36);
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vgmstream->ch[i].offset = 0x50+(i*(start_offset+0x26-0x50));
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if (!vgmstream->ch[i].streamfile) goto fail;
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}
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}
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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