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58398619a6
Unlike mono HPS, the format never included support for more than 2 channels, as far as I know. By adding additional channel headers and data to each block, we can unofficially extend the container to support more than 2 channels.
22 lines
830 B
C
22 lines
830 B
C
#include "layout.h"
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#include "../vgmstream.h"
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/* set up for the block at the given offset */
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void halpst_block_update(off_t block_offset, VGMSTREAM * vgmstream) {
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int i, header_length;
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/* header length must be a multiple of 0x20 */
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header_length = (4+8*vgmstream->channels+0x1f)/0x20*0x20;
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vgmstream->current_block_offset = block_offset;
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vgmstream->current_block_size = read_32bitBE(
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vgmstream->current_block_offset,
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vgmstream->ch[0].streamfile)/vgmstream->channels;
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vgmstream->next_block_offset = read_32bitBE(
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vgmstream->current_block_offset+8,
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vgmstream->ch[0].streamfile);
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for (i=0;i<vgmstream->channels;i++) {
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vgmstream->ch[i].offset = vgmstream->current_block_offset +
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header_length + vgmstream->current_block_size*i;
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}
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}
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