mirror of
https://github.com/vgmstream/vgmstream.git
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81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
#include "meta.h"
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#include "../util.h"
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#include "../coding/coding.h"
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/* MPDS - found in Paradigm Entertainment GC games */
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VGMSTREAM * init_vgmstream_ngc_dsp_mpds(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag = 0, channel_count, short_mpds;
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/* checks */
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/* .dsp: Big Air Freestyle */
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/* .mds: Terminator 3 The Redemption, Mission Impossible: Operation Surma */
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if (!check_extensions(streamFile, "dsp,mds"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x4D504453) /* "MPDS" */
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goto fail;
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short_mpds = read_32bitBE(0x04,streamFile) != 0x00010000 && /* version byte? */
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check_extensions(streamFile, "mds");
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channel_count = short_mpds ?
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read_16bitBE(0x0a, streamFile) :
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read_32bitBE(0x14, streamFile);
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if (channel_count > 2) goto fail;
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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_NGC_DSP_MPDS;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_interleave;
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if (!short_mpds) { /* Big Air Freestyle */
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start_offset = 0x80;
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vgmstream->num_samples = read_32bitBE(0x08,streamFile);
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vgmstream->sample_rate = read_32bitBE(0x10,streamFile);
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vgmstream->interleave_block_size = channel_count==1 ? 0 : read_32bitBE(0x18,streamFile);
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/* compare sample count with body size */
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if ((vgmstream->num_samples / 7 * 8) != (read_32bitBE(0x0C,streamFile))) goto fail;
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dsp_read_coefs_be(vgmstream,streamFile,0x24, 0x28);
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}
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else { /* Terminator 3 The Redemption, Mission Impossible: Operation Surma */
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start_offset = 0x20;
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vgmstream->num_samples = read_32bitBE(0x04,streamFile);
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vgmstream->sample_rate = (uint16_t)read_16bitBE(0x08,streamFile);
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vgmstream->interleave_block_size = channel_count==1 ? 0 : 0x200;
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/* some kind of hist after 0x0c? */
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/* set coefs, debugged from the MI:OS ELF (helpfully marked as "sMdsCoefs") */
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{
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static const int16_t coefs[16] = {
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0x0000,0x0000,0x0780,0x0000,0x0e60,0xf980,0x0c40,0xf920,
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0x0f40,0xf880,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000
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};
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int i, ch;
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for (ch = 0; ch < channel_count; ch++) {
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for (i = 0; i < 16; i++) {
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vgmstream->ch[ch].adpcm_coef[i] = coefs[i];
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}
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}
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}
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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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