mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 23:52:53 +01:00
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
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#include "meta.h"
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#include "../util.h"
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VGMSTREAM * init_vgmstream_ps2_mtaf(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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off_t start_offset = 0x40 - 8;
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int i;
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int Header =0;
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int HeaderSize = 0;
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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("mtaf",filename_extension(filename))) goto fail;
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/* check NPSF Header */
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if (read_32bitBE(0x00,streamFile) != 0x4D544146 ||
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read_32bitBE(0x40,streamFile) != 0x48454144)
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goto fail;
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do {
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start_offset +=HeaderSize + 8;
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Header = read_32bitBE(start_offset, streamFile);
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HeaderSize = read_32bitLE(start_offset + 4, streamFile);
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} while(Header!=0x44415441);
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start_offset +=4;
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/* check loop */
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loop_flag = 0;
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channel_count=2;
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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 = 44100;
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/* Check for Compression Scheme */
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vgmstream->coding_type = coding_EACS_IMA;
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vgmstream->num_samples = read_32bitLE(start_offset,streamFile);
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vgmstream->layout_type = layout_mtaf_blocked;
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vgmstream->meta_type = meta_PS2_MTAF;
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vgmstream->block_count=1;
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start_offset += 4;
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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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if (!vgmstream->ch[0].streamfile) {
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vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,0x8000);
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}
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vgmstream->ch[i].streamfile = vgmstream->ch[0].streamfile;
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if (!vgmstream->ch[i].streamfile) goto fail;
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}
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}
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mtaf_block_update(start_offset, 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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