src/usr.bin/aucat/aparams.h - diff

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version 1.8, 2009/09/27 11:51:20

version 1.9, 2010/11/04 17:55:28

Line 63

* numbers, so that we can do all multiplications and divisions in

* 32-bit precision without having to deal with overflows.

typedef short adata_t;

#define ADATA_BITS 16

#define ADATA_MSB 1

#define ADATA_MUL(x,y) (((int)(x) * (int)(y)) >> (ADATA_BITS - 1))

#define ADATA_MULDIV(x,y,z) ((int)(x) * (int)(y) / (int)(z))

#define ADATA_SHIFT (8 * sizeof(short) - 1)

#define ADATA_UNIT (1 << (ADATA_BITS - 1))

#define ADATA_UNIT (1 << ADATA_SHIFT)

#define ADATA_MAX (ADATA_UNIT - 1)

#define ADATA_MUL(x,y) (((x) * (y)) >> ADATA_SHIFT)

#define MIDI_MAXCTL 127

#define MIDI_TO_ADATA(m) (aparams_ctltovol[m])

#define MIDI_TO_ADATA(m) (aparams_ctltovol[m] << (ADATA_BITS - 16))

extern int aparams_ctltovol[128];

extern struct aparams aparams_none;