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https://github.com/vgmstream/vgmstream.git
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eca9b83208
Remove layout_interleave_shortblock for clarity as the value is enough to signal its use. Also fix .snd last block calculation, and clean some metas since I was testing changes anyway.
59 lines
2.1 KiB
C
59 lines
2.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* 04SW - found in Driver: Parallel Lines (Wii) */
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VGMSTREAM * init_vgmstream_wii_04sw(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count;
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size_t file_size, data_size;
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/* checks */
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/* ".04sw" is just the ID, the real filename inside the file uses .XA */
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if (!check_extensions(streamFile,"xa,04sw"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x30345357) /* "04SW" */
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goto fail;
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/* after the ID goes a semi-standard DSP header */
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if (read_32bitBE(0x10,streamFile) != 0) goto fail; /* should be non looping */
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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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channel_count = (read_32bitBE(0x04,streamFile) == read_32bitBE(0x64,streamFile)) ? 2 : 1;
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start_offset = read_32bitBE(0x04 + 0x60*channel_count,streamFile);
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file_size = get_streamfile_size(streamFile);
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data_size = read_32bitBE(0x04 + 0x60*channel_count + 0x04,streamFile);
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if (data_size+start_offset != file_size) goto fail;
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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_32bitBE(0x0c,streamFile);
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vgmstream->num_samples = read_32bitBE(0x04,streamFile);
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = channel_count == 1 ? layout_none : layout_interleave;
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vgmstream->interleave_block_size = 0x8000;
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vgmstream->interleave_last_block_size = (read_32bitBE(0x08,streamFile) / 2 % vgmstream->interleave_block_size + 7) / 8 * 8;
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dsp_read_coefs_be(vgmstream,streamFile,0x20, 0x60);
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/* the initial history offset seems different thatn standard DSP and possibly always zero */
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vgmstream->meta_type = meta_WII_04SW;
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/* the rest of the header has unknown values (several repeats) and the filename */
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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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