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49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* APC - from Cryo games [MegaRace 3 (PC)] */
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VGMSTREAM* init_vgmstream_apc(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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uint32_t start_offset, data_size;
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int loop_flag, channels, sample_rate;
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/* checks */
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if (!is_id32be(0x00,sf, "CRYO"))
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goto fail;
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if (!is_id32be(0x04,sf, "_APC"))
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goto fail;
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//if (!is_id32be(0x04,sf, "1.20"))
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// goto fail;
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if (!check_extensions(sf,"apc"))
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goto fail;
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sample_rate = read_s32le(0x10,sf);
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/* 0x14/18: L/R hist sample? */
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channels = read_s32le(0x1c,sf) == 0 ? 1 : 2;
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loop_flag = 0;
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start_offset = 0x20;
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data_size = get_streamfile_size(sf) - start_offset;
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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_APC;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = ima_bytes_to_samples(data_size, channels);
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vgmstream->coding_type = coding_IMA;
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vgmstream->layout_type = layout_none;
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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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