mirror of
https://github.com/vgmstream/vgmstream.git
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63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
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#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;
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int big_endian;
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size_t interleave = 0;
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int32_t coef_start_offset, coef_spacing;
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int32_t (*read_32bit)(off_t,STREAMFILE*) = NULL;
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int16_t (*read_16bit)(off_t,STREAMFILE*) = NULL;
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/* checks */
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if (!check_extensions(streamFile, "bwav"))
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goto fail;
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/* BWAV header */
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if (read_32bitBE(0x00, streamFile) != 0x42574156) /* "BWAV" */
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goto fail;
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if ((uint16_t)read_16bitBE(0x04, streamFile) == 0xFEFF) { /* BE BOM check */
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read_32bit = read_32bitBE;
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read_16bit = read_16bitBE;
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big_endian = 1;
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} else if ((uint16_t)read_16bitBE(0x04, streamFile) == 0xFFFE) { /* LE BOM check */
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read_32bit = read_32bitLE;
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read_16bit = read_16bitLE;
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big_endian = 0;
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} else {
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goto fail;
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}
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channel_count = 1; //read_8bit(0x0E, streamFile); Needs to be checked
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start_offset = read_32bit(0x40, streamFile);
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loop_flag = 0;
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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_32bit(0x14, streamFile);
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vgmstream->num_samples = read_32bit(0x18, streamFile);
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vgmstream->meta_type = meta_BWAV;
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vgmstream->layout_type = (channel_count == 1) ? layout_none : layout_interleave;
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vgmstream->interleave_block_size = 0x08; //Maybe half-file? Needs to be checked
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vgmstream->coding_type = coding_NGC_DSP;
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coef_start_offset = 0x20;
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coef_spacing = 0x4C;
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dsp_read_coefs_le(vgmstream, streamFile, coef_start_offset, coef_spacing);
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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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