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https://github.com/vgmstream/vgmstream.git
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992bef1dc4
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@400 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
#include "meta.h"
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#include "../util.h"
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/* STMA
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STMA (found in Midnight Club 2)
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*/
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VGMSTREAM * init_vgmstream_xbox_stma(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;
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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("stma",filename_extension(filename))) goto fail;
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if(read_32bitBE(0x0,streamFile)!=0x53544D41)
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goto fail;
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loop_flag = ((read_32bitLE(0x20,streamFile)==1) || (read_32bitLE(0x18,streamFile)>read_32bitLE(0x1C,streamFile)));
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/* Seems that the loop flag is not allways well defined */
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/* Some of the tracks should loop, but without flag set */
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channel_count=read_32bitLE(0x14,streamFile);
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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_32bitLE(0x0C,streamFile);
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vgmstream->coding_type = coding_INT_DVI_IMA;
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vgmstream->num_samples = read_32bitLE(0x18,streamFile)*2/vgmstream->channels;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size=0x40;
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vgmstream->meta_type = meta_XBOX_STMA;
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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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/* 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 = 0x800+(i*vgmstream->interleave_block_size);
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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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