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51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../layout/layout.h"
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/* MUSC - from Krome's PS2 games (The Legend of Spyro, Ty the Tasmanian Tiger) */
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VGMSTREAM* init_vgmstream_musc(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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int loop_flag, channels;
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off_t start_offset;
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size_t data_size;
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/* checks */
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/* .mus: actual extension
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* .musc: header ID */
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if (!check_extensions(sf,"mus,musc"))
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goto fail;
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if (!is_id32be(0x00,sf, "MUSC"))
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goto fail;
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start_offset = read_u32le(0x10,sf);
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data_size = read_u32le(0x14,sf);
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if (start_offset + data_size != get_streamfile_size(sf))
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goto fail;
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/* always does full loops unless it ends in silence */
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loop_flag = read_u32be(get_streamfile_size(sf) - 0x10,sf) != 0x0C000000;
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channels = 2;
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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->sample_rate = read_u16le(0x06,sf);
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vgmstream->num_samples = ps_bytes_to_samples(data_size, channels);
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vgmstream->loop_start_sample = 0;
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vgmstream->loop_end_sample = vgmstream->num_samples;
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vgmstream->meta_type = meta_MUSC;
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = read_u32le(0x18,sf) / 2;
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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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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