mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 15:21:04 +01:00
53 lines
1.8 KiB
C
53 lines
1.8 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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/* XVAS - found in TMNT 2 & TMNT 3 (Xbox) */
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VGMSTREAM * init_vgmstream_xbox_xvas(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count;
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size_t data_size;
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/* check extension */
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if (!check_extensions(streamFile,"xvas"))
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goto fail;
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if (read_32bitLE(0x00,streamFile) != 0x69 && /* codec */
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read_32bitLE(0x08,streamFile) != 0x48) /* block size (probably 0x24 for mono) */
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goto fail;
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start_offset = 0x800;
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channel_count = read_32bitLE(0x04,streamFile); /* always stereo files */
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loop_flag = (read_32bitLE(0x14,streamFile) == read_32bitLE(0x24,streamFile));
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data_size = read_32bitLE(0x24,streamFile);
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data_size -= (data_size / 0x20000) * 0x20; /* blocks of 0x20000 with padding */
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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 = read_32bitLE(0x0c,streamFile);
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vgmstream->num_samples = xbox_ima_bytes_to_samples(data_size, vgmstream->channels);
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if(loop_flag) {
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size_t loop_size = read_32bitLE(0x10,streamFile);
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loop_size -= (loop_size / 0x20000) * 0x20;
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vgmstream->loop_start_sample = xbox_ima_bytes_to_samples(loop_size, vgmstream->channels);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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vgmstream->coding_type = coding_XBOX_IMA;
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vgmstream->layout_type = layout_blocked_xvas;
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vgmstream->meta_type = meta_XBOX_XVAS;
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if (!vgmstream_open_stream(vgmstream, streamFile, start_offset))
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goto fail;
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block_update_xvas(start_offset,vgmstream);
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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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