49 lines
1.4 KiB
C
49 lines
1.4 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 *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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size_t data_size;
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int loop_flag, channel_count;
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/* checks */
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if ( !check_extensions(streamFile,"apc") )
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x4352594F) /* "CRYO" */
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goto fail;
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if (read_32bitBE(0x04,streamFile) != 0x5F415043) /* "_APC" */
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goto fail;
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//if (read_32bitBE(0x08,streamFile) != 0x312E3230) /* "1.20" */
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// goto fail;
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/* 0x14/18: L/R hist sample? */
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start_offset = 0x20;
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data_size = get_streamfile_size(streamFile) - start_offset;
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channel_count = read_32bitLE(0x1c,streamFile) == 0 ? 1 : 2;
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loop_flag = 0;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count,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 = read_32bitLE(0x10,streamFile);
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vgmstream->num_samples = ima_bytes_to_samples(data_size,channel_count);
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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, streamFile, 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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