mirror of
https://github.com/vgmstream/vgmstream.git
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71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* BWAV - NintendoWare(?) [Super Mario Maker 2 (Switch)] */
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VGMSTREAM * init_vgmstream_bwav(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int channel_count, loop_flag, codec;
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size_t interleave = 0;
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/* checks */
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if (!check_extensions(streamFile, "bwav"))
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goto fail;
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if (read_32bitBE(0x00, streamFile) != 0x42574156) /* "BWAV" */
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goto fail;
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/* 0x04: BOM */
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/* 0x06: version? */
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/* 0x08: ??? */
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/* 0x0c: null? */
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channel_count = read_16bitLE(0x0E, streamFile);
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/* - per channel (size 0x4c) */
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codec = read_16bitLE(0x10, streamFile);
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/* see below */
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start_offset = read_32bitLE(0x40, streamFile);
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loop_flag = read_32bitLE(0x4C, streamFile) != -1;
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if (channel_count > 1)
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interleave = read_32bitLE(0x8C, streamFile) - start_offset;
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//TODO should make sure channels match and offsets make a proper interleave (see bfwav)
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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(0x14, streamFile);
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vgmstream->num_samples = read_32bitLE(0x18, streamFile);
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vgmstream->loop_start_sample = read_32bitLE(0x50, streamFile);
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vgmstream->loop_end_sample = read_32bitLE(0x4C, streamFile);
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vgmstream->meta_type = meta_BWAV;
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switch(codec) {
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case 0x0000:
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = interleave;
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break;
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case 0x0001:
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = interleave;
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dsp_read_coefs_le(vgmstream, streamFile, 0x20, 0x4C);
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break;
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default:
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goto fail;
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}
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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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