131 lines
4.2 KiB
C
131 lines
4.2 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../layout/layout.h"
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static layered_layout_data* build_layered_data(STREAMFILE* sf, int channels);
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/* BWAV - NintendoWare wavs [Super Mario Maker 2 (Switch)] */
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VGMSTREAM* init_vgmstream_bwav(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset;
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int channels, loop_flag, codec, sample_rate;
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int32_t num_samples, loop_start, loop_end;
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size_t interleave = 0;
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/* checks */
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if (!is_id32be(0x00, sf, "BWAV"))
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goto fail;
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if (!check_extensions(sf, "bwav"))
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goto fail;
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/* 0x04: BOM (always 0xFEFF = LE) */
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/* 0x06: version? (0x0001) */
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/* 0x08: crc32? (supposedly from all channel data without padding) */
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/* 0x0c: prefetch flag */
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channels = read_u16le(0x0e, sf);
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/* - per channel (size 0x4c) */
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codec = read_u16le(0x10 + 0x00, sf);
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/* 0x02: channel layout (0=L, 1=R, 2=C) */
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sample_rate = read_s32le(0x10 + 0x04, sf);
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/* 0x08: num_samples for full (non-prefetch) file, same as below if not prefetch */
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num_samples = read_s32le(0x10 + 0x0c, sf);
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/* 0x10: coefs (empty for non-DSP codecs) */
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/* 0x30: offset for full (non-prefetch) file? */
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start_offset = read_u32le(0x10 + 0x34, sf);
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/* 0x38: flag? (always 1) */
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loop_end = read_s32le(0x10 + 0x3C, sf);
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loop_start = read_s32le(0x10 + 0x40, sf);
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/* 0x44: start predictor + hist1 + hist2 (empty for non-DSP codecs) */
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/* 0x4a: null? */
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loop_flag = (loop_end != -1);
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//TODO should make sure channels match and offsets make a proper interleave (see bfwav)
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if (channels > 1)
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interleave = read_u32le(0x8C, sf) - start_offset;
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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_BWAV;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = num_samples;
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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switch(codec) {
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case 0x0000: /* Ring Fit Adventure (Switch) */
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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: /* Super Mario Maker 2 (Switch) */
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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, sf, 0x10 + 0x10, 0x4C);
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dsp_read_hist_le(vgmstream, sf, 0x10 + 0x46, 0x4C);
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vgmstream->allow_dual_stereo = 1; /* Animal Crossing: Happy Home Paradise */
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break;
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case 0x0002: /* Zelda TOTK (Switch) */
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vgmstream->layout_data = build_layered_data(sf, channels);
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if (!vgmstream->layout_data) goto fail;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_layered;
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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, 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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static layered_layout_data* build_layered_data(STREAMFILE* sf, int channels) {
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layered_layout_data* data = NULL;
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STREAMFILE* temp_sf = NULL;
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data = init_layout_layered(channels);
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if (!data) goto fail;
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for (int ch = 0; ch < channels; ch++) {
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uint32_t subfile_offset = read_u32le(0x10 + 0x4c * ch + 0x34, sf);
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uint32_t subfile_size = 0x28 + read_u32le(subfile_offset + 0x24, sf); /* NXOpus size, abridged (fails if non-common chunks are found, let's see) */
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temp_sf = setup_subfile_streamfile(sf, subfile_offset, subfile_size, "opus");
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if (!temp_sf) goto fail;
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data->layers[ch] = init_vgmstream_opus_std(temp_sf);
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if (!data->layers[ch]) goto fail;
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data->layers[ch]->stream_size = get_streamfile_size(temp_sf);
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close_streamfile(temp_sf);
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temp_sf = NULL;
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}
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if (!setup_layout_layered(data))
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goto fail;
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return data;
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fail:
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free_layout_layered(data);
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close_streamfile(temp_sf);
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return NULL;
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}
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