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65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* 04SW - Reflections games [Driver: Parallel Lines (Wii), Emergency Heroes (Wii)] */
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VGMSTREAM* init_vgmstream_xa_04sw(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_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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uint32_t data_size;
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/* checks */
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if (!is_id32be(0x00,sf, "04SW"))
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goto fail;
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if (!check_extensions(sf,"xa"))
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goto fail;
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/* after the ID goes a modified DSP header x2 */
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if (read_u32be(0x04 + 0x0c,sf) != 0) /* should be non looping */
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goto fail;
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loop_flag = 0;
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/* not in header it seems, so just dual header check */
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num_samples = read_s32be(0x04 + 0x00,sf);
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data_size = read_u32be(0x04 + 0x04,sf);
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sample_rate = read_u32be(0x0c,sf);
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channels = (read_u32be(0x04 + 0x00,sf) == read_u32be(0x04 + 0x60,sf)) ? 2 : 1; /* some voice .xa */
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/* After DSP header goes a base header with mostly unknown values (several repeats) and the filename.
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* Emergency Heroes has extra 0x10 at 0x10. */
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start_offset = read_u32be(0x04 + 0x60 * 2 + 0x00, sf);
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/* 0x04: data size (includes padding after DSP data in Driver, doesn't in Emergency Heroes */
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/* 0x1c/2c: channels LE? */
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/* 0x74/84: utf-16 path+filename */
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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->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 = channels == 1 ? layout_none : layout_interleave;
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vgmstream->interleave_block_size = 0x8000;
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vgmstream->interleave_last_block_size = (data_size / 2 % vgmstream->interleave_block_size + 7) / 8 * 8;
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dsp_read_coefs_be(vgmstream, sf, 0x04 + 0x1c, 0x60);
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/* initial history offset seems different than standard DSP and possibly fixed/invalid */
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vgmstream->meta_type = meta_XA_04SW;
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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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