mirror of
https://github.com/vgmstream/vgmstream.git
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53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* RRDS - from (some) NST games [Ridge Racer (DS), Metroid Prime Hunters - First Hunt (DS)] */
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VGMSTREAM * init_vgmstream_nds_rrds(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;
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/* checks */
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/* .rrds: made-up extension (files come from a bigfile and don't have filenames/extension) */
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if (!check_extensions(streamFile, ",rrds"))
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goto fail;
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if ((read_32bitLE(0x00,streamFile)+0x18) != get_streamfile_size(streamFile))
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goto fail;
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loop_flag = (read_32bitLE(0x14,streamFile) != 0); //todo not correct for MPH: First Hunt?
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channel_count = 1;
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start_offset = 0x1c;
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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_32bitLE(0x08,streamFile);
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vgmstream->num_samples = ima_bytes_to_samples(read_32bitLE(0x00,streamFile)-start_offset,channel_count);
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if (loop_flag) {
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vgmstream->loop_start_sample = ima_bytes_to_samples(read_32bitLE(0x14,streamFile)-start_offset,channel_count);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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vgmstream->meta_type = meta_NDS_RRDS;
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vgmstream->coding_type = coding_IMA_int;
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vgmstream->layout_type = layout_none;
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{
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vgmstream->ch[0].adpcm_history1_16 = read_16bitLE(0x18,streamFile);
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vgmstream->ch[0].adpcm_step_index = read_16bitLE(0x1a,streamFile);
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if (vgmstream->ch[0].adpcm_step_index < 0 || vgmstream->ch[0].adpcm_step_index > 88)
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goto fail;
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}
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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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