32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
#include "layout.h"
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/* Traveller's Tales blocks (.AUDIO_DATA) */
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void block_update_tt_ad(off_t block_offset, VGMSTREAM* vgmstream) {
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STREAMFILE* sf = vgmstream->ch[0].streamfile;
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uint32_t header_id, block_size, header_size;
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int i;
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header_size = 0x00;
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block_size = vgmstream->frame_size;
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//TODO could be optimized?
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/* first chunk and last frame has an extra header:
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* 0x00: id
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* 0x04: 0 in FRST, left samples in LAST, others not seen (found in exe) */
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header_id = read_u32be(block_offset, sf);
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if (header_id == get_id32be("FRST") || header_id == get_id32be("LAST") ||
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header_id == get_id32be("LSRT") || header_id == get_id32be("LEND")) {
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header_size = 0x08;
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}
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VGM_ASSERT(header_id == get_id32be("LSRT") || header_id == get_id32be("LEND"), "TT-AD: loop found\n");
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vgmstream->current_block_offset = block_offset;
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vgmstream->current_block_size = block_size /* * vgmstream->channels*/;
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vgmstream->next_block_offset = block_offset + block_size * vgmstream->channels + header_size;
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/* MS-IMA = same offset per channel */
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for (i = 0; i < vgmstream->channels; i++) {
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vgmstream->ch[i].offset = vgmstream->current_block_offset + header_size + block_size * i;
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}
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}
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