mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 15:42:52 +01:00
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
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#include "meta.h"
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#include "../util.h"
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/* RAS (from Donkey Kong Country Returns) */
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VGMSTREAM * init_vgmstream_wii_ras(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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off_t start_offset;
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int loop_flag;
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int channel_count;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("ras",filename_extension(filename))) goto fail;
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/* check header */
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if (read_32bitBE(0x00,streamFile) != 0x5241535F) /* "RAS_" */
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goto fail;
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loop_flag = 0;
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channel_count = 2;
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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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/* fill in the vital statistics */
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start_offset = read_32bitBE(0x18,streamFile);
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitBE(0x14,streamFile);
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->num_samples = read_32bitBE(0xc,streamFile);
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = read_32bitBE(0x20,streamFile);
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vgmstream->meta_type = meta_WII_RAS;
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if (vgmstream->coding_type == coding_NGC_DSP) {
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int i;
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for (i=0;i<16;i++) {
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vgmstream->ch[0].adpcm_coef[i] = read_16bitBE(0x40+i*2,streamFile);
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}
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if (channel_count == 2) {
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for (i=0;i<16;i++)
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vgmstream->ch[1].adpcm_coef[i] = read_16bitBE(0x70+i*2,streamFile);
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}
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}
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/* open the file for reading */
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{
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int i;
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for (i=0;i<channel_count;i++) {
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if (vgmstream->layout_type==layout_interleave_shortblock)
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vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,
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vgmstream->interleave_block_size);
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else
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vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,
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0x1000);
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if (!vgmstream->ch[i].streamfile) goto fail;
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vgmstream->ch[i].channel_start_offset=
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vgmstream->ch[i].offset=
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start_offset + i*vgmstream->interleave_block_size;
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}
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}
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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