mirror of
https://github.com/vgmstream/vgmstream.git
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52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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/* .DSF - from Ocean game(s?) [Last Rites (PC)] */
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VGMSTREAM * init_vgmstream_dsf(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count, sample_rate;
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size_t data_size;
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/* checks */
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if (!check_extensions(streamFile, "dsf"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x4F434541 && /* "OCEA" */
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read_32bitBE(0x00,streamFile) != 0x4E204453 && /* "N DS" */
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read_32bitBE(0x00,streamFile) != 0x41000000) /* "A\0\0\0" */
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goto fail;
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/* 0x10(2): always 1? */
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/* 0x12(4): total nibbles / 0x10? */
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/* 0x16(4): always 0? */
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start_offset = read_32bitLE(0x1a,streamFile);
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sample_rate = read_32bitLE(0x1e,streamFile);
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channel_count = read_32bitLE(0x22,streamFile) + 1;
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data_size = get_streamfile_size(streamFile) - start_offset;
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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_DSF;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = ((data_size / 0x08 / channel_count) * 14); /* bytes-to-samples */
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vgmstream->coding_type = coding_DSA;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x08;
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read_string(vgmstream->stream_name,0x20+1, 0x26,streamFile);
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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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