mirror of
https://github.com/vgmstream/vgmstream.git
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57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* STER - from Silicon Studios/Vicarious Visions's ALCHEMY middleware [Baroque (PS2), Star Soldier (PS2)] */
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VGMSTREAM* init_vgmstream_ster(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channels, sample_rate;
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size_t channel_size, loop_start;
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/* checks */
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if (!is_id32be(0x00,sf, "STER"))
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goto fail;
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/* .ster: header id (no apparent names/extensions)
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* .sfs: generic bigfile extension (to be removed?)*/
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if (!check_extensions(sf, "ster,sfs"))
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goto fail;
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channel_size = read_u32le(0x04, sf);
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loop_start = read_u32le(0x08, sf); /* absolute (ex. offset 0x50 for full loops) */
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/* 0x0c: data size BE */
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sample_rate = read_s32be(0x10,sf);
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/* 0x14~20: null */
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loop_flag = loop_start != 0xFFFFFFFF;
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channels = 2; /* mono files are simply .VAG */
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start_offset = 0x30;
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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_STER;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = ps_bytes_to_samples(channel_size, 1);
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vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start - start_offset, channels);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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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 = 0x10;
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read_string(vgmstream->stream_name,0x10+1, 0x20,sf);
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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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