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79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
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#ifndef LIBXMP_MIXER_H
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#define LIBXMP_MIXER_H
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#define C4_PERIOD 428.0
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#define SMIX_NUMVOC 128 /* default number of softmixer voices */
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#define SMIX_SHIFT 16
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#define SMIX_MASK 0xffff
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#define FILTER_SHIFT 16
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#define ANTICLICK_SHIFT 3
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#ifdef LIBXMP_PAULA_SIMULATOR
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#include "paula.h"
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#endif
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#define MIXER(f) void libxmp_mix_##f(struct mixer_voice *vi, int *buffer, \
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int count, int vl, int vr, int step, int ramp, int delta_l, int delta_r)
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struct mixer_voice {
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int chn; /* channel number */
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int root; /* */
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int note; /* */
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#define PAN_SURROUND 0x8000
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int pan; /* */
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int vol; /* */
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double period; /* current period */
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double pos; /* position in sample */
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int pos0; /* position in sample before mixing */
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int fidx; /* mixer function index */
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int ins; /* instrument number */
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int smp; /* sample number */
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int end; /* loop end */
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int act; /* nna info & status of voice */
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int old_vl; /* previous volume, left channel */
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int old_vr; /* previous volume, right channel */
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int sleft; /* last left sample output, in 32bit */
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int sright; /* last right sample output, in 32bit */
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#define VOICE_RELEASE (1 << 0)
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#define ANTICLICK (1 << 1)
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#define SAMPLE_LOOP (1 << 2)
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int flags; /* flags */
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void *sptr; /* sample pointer */
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#ifdef LIBXMP_PAULA_SIMULATOR
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struct paula_state *paula; /* paula simulation state */
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#endif
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#ifndef LIBXMP_CORE_DISABLE_IT
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struct {
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int r1; /* filter variables */
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int r2;
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int l1;
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int l2;
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int a0;
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int b0;
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int b1;
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int cutoff;
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int resonance;
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} filter;
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#endif
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};
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int libxmp_mixer_on (struct context_data *, int, int, int);
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void libxmp_mixer_off (struct context_data *);
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void libxmp_mixer_setvol (struct context_data *, int, int);
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void libxmp_mixer_seteffect (struct context_data *, int, int, int);
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void libxmp_mixer_setpan (struct context_data *, int, int);
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int libxmp_mixer_numvoices (struct context_data *, int);
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void libxmp_mixer_softmixer (struct context_data *);
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void libxmp_mixer_reset (struct context_data *);
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void libxmp_mixer_setpatch (struct context_data *, int, int, int);
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void libxmp_mixer_voicepos (struct context_data *, int, double, int);
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double libxmp_mixer_getvoicepos(struct context_data *, int);
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void libxmp_mixer_setnote (struct context_data *, int, int);
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void libxmp_mixer_setperiod (struct context_data *, int, double);
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void libxmp_mixer_release (struct context_data *, int, int);
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#endif /* LIBXMP_MIXER_H */
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