48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* XMU - found in Alter Echo (Xbox) */
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VGMSTREAM* init_vgmstream_xmu(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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size_t start_offset;
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int loop_flag, channel_count;
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size_t data_size;
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/* checks */
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if (!is_id32be(0x00,sf, "XMU "))
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goto fail;
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if (!check_extensions(sf,"xmu"))
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goto fail;
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if (!is_id32be(0x08,sf, "FRMT"))
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goto fail;
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start_offset = 0x800;
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channel_count = read_u8(0x14,sf); /* always stereo files */
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loop_flag = read_u8(0x16,sf); /* no Loop found atm */
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data_size = read_u32le(0x7FC,sf); /* next to "DATA" */
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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->meta_type = meta_XMU;
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vgmstream->sample_rate = read_s32le(0x10,sf);
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vgmstream->num_samples = xbox_ima_bytes_to_samples(data_size, vgmstream->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->coding_type = coding_XBOX_IMA;
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vgmstream->layout_type = layout_none;
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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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