mirror of
https://github.com/vgmstream/vgmstream.git
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72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
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#include "meta.h"
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#include "../util.h"
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/* XVAS
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XVAS (found in TMNT 2 & TMNT 3))
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*/
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VGMSTREAM * init_vgmstream_xbox_xvas(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("xvas",filename_extension(filename))) goto fail;
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if((read_32bitLE(0x00,streamFile)!=0x69) &&
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(read_32bitLE(0x08,streamFile)!=0x48))
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goto fail;
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/* No Loop found atm */
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loop_flag = (read_32bitLE(0x14,streamFile)==read_32bitLE(0x24,streamFile));
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/* Always stereo files */
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channel_count=read_32bitLE(0x04,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_XBOX;
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vgmstream->num_samples = read_32bitLE(0x24,streamFile);
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vgmstream->num_samples -= ((vgmstream->num_samples/0x20000)*0x20);
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vgmstream->num_samples = vgmstream->num_samples / 36 * 64 / vgmstream->channels;
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vgmstream->layout_type = layout_xvas_blocked;
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vgmstream->meta_type = meta_XBOX_XVAS;
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if(loop_flag) {
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vgmstream->loop_start_sample = read_32bitLE(0x10,streamFile);
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vgmstream->loop_start_sample -= ((vgmstream->loop_start_sample/0x20000)*0x20);
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vgmstream->loop_start_sample = vgmstream->loop_start_sample / 36 * 64 / vgmstream->channels;
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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;
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if (!vgmstream->ch[i].streamfile) goto fail;
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}
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}
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xvas_block_update(0x800,vgmstream);
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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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