55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* RS03 - from Metroid Prime 2 (GC) */
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VGMSTREAM * init_vgmstream_rs03(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 channel_count, loop_flag;
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/* checks */
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if (!check_extensions(streamFile, "dsp"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x52530003) /* "RS03" */
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goto fail;
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channel_count = read_32bitBE(0x04,streamFile);
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if (channel_count != 1 && channel_count != 2) goto fail;
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loop_flag = read_16bitBE(0x14,streamFile);
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start_offset = 0x60;
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data_size = (get_streamfile_size(streamFile) - start_offset);
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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->sample_rate = read_32bitBE(0x0c,streamFile);
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vgmstream->num_samples = read_32bitBE(0x08,streamFile);
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if (loop_flag) {
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vgmstream->loop_start_sample = dsp_bytes_to_samples(read_32bitBE(0x18,streamFile), 1);
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vgmstream->loop_end_sample = dsp_bytes_to_samples(read_32bitBE(0x1c,streamFile), 1);
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}
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vgmstream->meta_type = meta_DSP_RS03;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x8f00;
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if (vgmstream->interleave_block_size)
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vgmstream->interleave_last_block_size = ((data_size % (vgmstream->interleave_block_size*vgmstream->channels))/2+7)/8*8;
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dsp_read_coefs_be(vgmstream,streamFile,0x20,0x20);
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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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