mirror of
https://github.com/vgmstream/vgmstream.git
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789c231044
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@783 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
#include "meta.h"
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#include "../util.h"
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/* MPDS - found in Big Air Freestyle, Terminator 3 (no coeffs), etc */
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VGMSTREAM * init_vgmstream_ngc_dsp_mpds(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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int loop_flag = 0;
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int channel_count;
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int ch1_start, ch2_start;
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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("dsp",filename_extension(filename))) goto fail;
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/* check header */
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if (read_32bitBE(0x00,streamFile) != 0x4D504453) /* "MPDS" */
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goto fail;
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/* Version byte ??? */
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if (read_32bitBE(0x04,streamFile) != 0x00010000) /* "0x10000" */
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goto fail;
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/* compare sample count with body size */
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if (((read_32bitBE(0x08,streamFile)/7*8)) != (read_32bitBE(0x0C,streamFile)))
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goto fail;
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channel_count = read_32bitBE(0x14,streamFile);
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if (channel_count > 2)
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{
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goto fail;
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}
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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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vgmstream->channels = channel_count;
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if (channel_count == 1)
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{
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vgmstream->layout_type = layout_none;
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ch1_start = 0x80;
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}
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else if (channel_count == 2)
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{
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = read_32bitBE(0x18,streamFile);
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ch1_start = 0x80;
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ch2_start = 0x80 + vgmstream->interleave_block_size;
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}
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else
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{
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goto fail;
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}
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vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
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vgmstream->coding_type = coding_NGC_DSP;
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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 = 0;
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vgmstream->loop_end_sample = read_32bitBE(0x08,streamFile);
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}
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vgmstream->meta_type = meta_NGC_DSP_MPDS;
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{
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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(0x24+i*2,streamFile);
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if (channel_count == 2)
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{
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for (i=0;i<16;i++)
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vgmstream->ch[1].adpcm_coef[i] = read_16bitBE(0x4C+i*2,streamFile);
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}
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}
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/* open the file for reading */
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vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!vgmstream->ch[0].streamfile) goto fail;
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vgmstream->ch[0].channel_start_offset =
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vgmstream->ch[0].offset=ch1_start;
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if (channel_count == 2)
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{
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vgmstream->ch[1].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!vgmstream->ch[1].streamfile) goto fail;
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vgmstream->ch[1].channel_start_offset =
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vgmstream->ch[1].offset=ch2_start;
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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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