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41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* .AO - from AlphaOgg lib [Cloudphobia (PC), GEO ~The Sword Millennia~ Kasumi no Tani no Kaibutsu (PC)] */
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VGMSTREAM* init_vgmstream_ao(STREAMFILE *sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset;
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/* checks */
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if (!check_extensions(sf,"ao"))
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goto fail;
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if (!is_id64be(0x00,sf, "ALPHAOGG"))
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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 sample_rate = read_u32le(0xF0, sf); /* Ogg header */
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ovmi.meta_type = meta_AO;
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ovmi.loop_start = read_f32le(0x08, sf) * sample_rate;
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ovmi.loop_end = read_f32le(0x0c, sf) * sample_rate; /* also num_samples in some versions */
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ovmi.loop_end_found = 1;
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ovmi.loop_flag = read_u8(0x10, sf) != 0; /* count or -1=infinite, u32 in some versions */
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/* AlphaOgg defines up to 16 loop points for some reason */
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start_offset = 0xc8;
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vgmstream = init_vgmstream_ogg_vorbis_callbacks(sf, 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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