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Updated VGMStream to r2023-66-g6eb1f65c Signed-off-by: Christopher Snowhill <kode54@gmail.com>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* SMH+SMC - from Wangan Midnight 1/R (System246) */
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VGMSTREAM* init_vgmstream_smh_smc(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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STREAMFILE* sb = NULL;
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off_t start_offset, header_offset = 0;
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size_t stream_size;
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int loop_flag = 0, channels, sample_rate;
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int total_subsongs, target_subsong = sf->stream_index;
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/* checks */
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if (!check_extensions(sf, "smh"))
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return NULL;
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total_subsongs = read_s32le(0x00,sf);
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if (target_subsong == 0) target_subsong = 1;
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if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
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if (total_subsongs * 0x10 + 0x10 != get_streamfile_size(sf))
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return NULL;
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sb = open_streamfile_by_ext(sf, "smc");
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if (!sb) goto fail;
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header_offset = 0x10 + (target_subsong - 1) * 0x10;
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start_offset = read_u32le(header_offset+0x00, sf);
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stream_size = read_u32le(header_offset+0x04, sf);
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sample_rate = read_u32le(header_offset+0x08, sf);
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// 0x0c(2): always 0x10, frame size?
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channels = read_u16le(header_offset+0x0e, sf);
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loop_flag = 0;
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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 = ps_bytes_to_samples(stream_size, channels);
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vgmstream->num_streams = total_subsongs;
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vgmstream->stream_size = stream_size;
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vgmstream->meta_type = meta_SMC_SMH;
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = read_32bitLE(0x04, sf);
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if (!vgmstream_open_stream(vgmstream, sb, start_offset))
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goto fail;
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close_streamfile(sb);
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return vgmstream;
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fail:
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close_streamfile(sb);
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close_vgmstream(vgmstream);
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return NULL;
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}
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