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https://github.com/vgmstream/vgmstream.git
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62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* LPCM - French-Bread's DSP [Melty Blood: Type Lumina (Switch)] */
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VGMSTREAM* init_vgmstream_lpcm_fb(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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uint32_t start_offset;
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int loop_flag, channels, sample_rate;
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int32_t num_samples;
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/* checks */
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if (!is_id32be(0x00, sf, "LPCM"))
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goto fail;
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/* .ladpcm: real extension (honest) */
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if (!check_extensions(sf, "ladpcm"))
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goto fail;
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/* 0x04: dsp offset (0x20) */
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if (read_u32le(0x04, sf) != 0x20)
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goto fail;
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num_samples = read_s32le(0x20, sf);
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/* 0x24: nibbles? */
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sample_rate = read_s32le(0x28, sf);
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/* 0x2c: 0? */
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/* 0x30: 2? */
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/* 0x34: nibbles? */
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/* 0x38: 2? */
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if (read_u32le(0x38, sf) != 2)
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goto fail;
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channels = 1;
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loop_flag = 0;
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start_offset = 0x78; /* could be 0x80 but this is closer to num_samples */
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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_LPCM_FB;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = num_samples;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_none;
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dsp_read_coefs_le(vgmstream, sf, 0x3c, 0);
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/* 0x5c: hist? */
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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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