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67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
#include "meta.h"
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#include "../layout/layout.h"
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#include "../coding/coding.h"
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/* VS - VagStream from Square Sounds Co. games [Final Fantasy X (PS2) voices, Unlimited Saga (PS2) voices, All Star Pro-Wrestling 2/3 (PS2) music] */
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VGMSTREAM* init_vgmstream_vs_square(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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int channels, loop_flag, pitch, flags;
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off_t start_offset;
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/* checks */
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/* .vs: extension from debug strings (probably like The Bouncer's .vs, very similar) */
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if (!check_extensions(sf, "vs"))
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goto fail;
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if (!is_id32be(0x00,sf,"VS\0\0"))
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goto fail;
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flags = read_u32le(0x04,sf);
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/* 0x08: block number */
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/* 0x0c: blocks left in the subfile */
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pitch = read_u32le(0x10,sf); /* usually 0x1000 = 48000 */
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/* 0x14: volume, usually 0x64 = 100, up to 128 [Lethal Skies / Sidewinder F (PS2)] */
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/* 0x18: null */
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/* 0x1c: null */
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/* some Front Mission 4 voices have flag 0x100, no idea */
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if (flags != 0x00 && flags != 0x01) {
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VGM_LOG("VS: unknown flags %x\n", flags);
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}
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loop_flag = 0;
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channels = (flags & 1) ? 2 : 1;
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start_offset = 0x00;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channels,loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->meta_type = meta_VS_SQUARE;
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vgmstream->sample_rate = round10((48000 * pitch) / 4096); /* needed for rare files */
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_blocked_vs_square;
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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/* calc num_samples */
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{
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vgmstream->next_block_offset = start_offset;
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do {
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block_update(vgmstream->next_block_offset,vgmstream);
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vgmstream->num_samples += ps_bytes_to_samples(vgmstream->current_block_size, 1);
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}
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while (vgmstream->next_block_offset < get_streamfile_size(sf));
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block_update(start_offset, vgmstream);
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}
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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