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49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* WAF - KID's earlier PC games [ever17 (PC)] (for RLE-compressed WAFs see https://github.com/dsp2003/e17p) */
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VGMSTREAM* init_vgmstream_waf(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;
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/* checks */
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if (!is_id32be(0x00,sf, "WAF\0"))
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return NULL;
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if (!check_extensions(sf, "waf"))
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return NULL;
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if (read_u32le(0x34,sf) + 0x38 != get_streamfile_size(sf))
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goto fail;
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channels = read_u16le(0x06,sf);
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loop_flag = 0;
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start_offset = 0x38;
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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_WAF;
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vgmstream->sample_rate = read_s32le(0x08, sf);
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vgmstream->coding_type = coding_MSADPCM;
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vgmstream->layout_type = layout_none;
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vgmstream->frame_size = read_u16le(0x10, sf);
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/* 0x04: null?, 0x0c: avg br, 0x12: bps, 0x14: s_p_f, 0x16~34: coefs (a modified RIFF fmt) */
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if (!msadpcm_check_coefs(sf, 0x16))
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goto fail;
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vgmstream->num_samples = msadpcm_bytes_to_samples(read_u32le(0x34,sf), vgmstream->frame_size, channels);
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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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