mirror of
https://github.com/vgmstream/vgmstream.git
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58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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/* NWAV - from Chunsoft games [Fuurai no Shiren Gaiden: Onnakenshi Asuka Kenzan! (PC)] */
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VGMSTREAM * init_vgmstream_nwav(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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/* checks */
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/* .nwav: header id (no filenames in bigfiles) */
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if ( !check_extensions(streamFile,"nwav") )
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x4E574156) /* "NWAV" */
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goto fail;
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#ifdef VGM_USE_VORBIS
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{
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ogg_vorbis_meta_info_t ovmi = {0};
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int channels;
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/* 0x04: version? */
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/* 0x08: crc? */
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ovmi.stream_size = read_32bitLE(0x0c, streamFile);
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ovmi.loop_end = read_32bitLE(0x10, streamFile); /* num_samples, actually */
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/* 0x14: sample rate */
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/* 0x18: bps? (16) */
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channels = read_8bit(0x19, streamFile);
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start_offset = read_16bitLE(0x1a, streamFile);
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ovmi.loop_flag = read_16bitLE(0x1c, streamFile) != 0; /* loop count? -1 = loops */
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/* 0x1e: always 2? */
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/* 0x20: always 1? */
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ovmi.loop_start = read_32bitLE(0x24, streamFile);
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/* 0x28: always 1? */
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/* 0x2a: always 1? */
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/* 0x2c: always null? */
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ovmi.meta_type = meta_NWAV;
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/* values are in resulting bytes */
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ovmi.loop_start = ovmi.loop_start / sizeof(int16_t) / channels;
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ovmi.loop_end = ovmi.loop_end / sizeof(int16_t) / channels;
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vgmstream = init_vgmstream_ogg_vorbis_callbacks(streamFile, NULL, start_offset, &ovmi);
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}
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#else
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goto fail;
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#endif
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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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