mirror of
https://github.com/vgmstream/vgmstream.git
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51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
#include "meta.h"
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#include "../util.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 *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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int loop_flag, channel_count;
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off_t start_offset;
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size_t data_size;
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/* .mus is the real extension, .musc is the header ID */
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if (!check_extensions(streamFile,"mus,musc"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x4D555343) /* "MUSC" */
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goto fail;
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start_offset = read_32bitLE(0x10,streamFile);
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data_size = read_32bitLE(0x14,streamFile);
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if (start_offset + data_size != get_streamfile_size(streamFile))
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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_32bitBE(get_streamfile_size(streamFile) - 0x10,streamFile) != 0x0C000000;
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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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vgmstream->sample_rate = (uint16_t)read_16bitLE(0x06,streamFile);
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vgmstream->num_samples = ps_bytes_to_samples(data_size, channel_count);
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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_32bitLE(0x18,streamFile) / 2;
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if (!vgmstream_open_stream(vgmstream,streamFile,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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