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

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

version 1.10, 2010/11/05 15:23:18

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#define ENCMAX 10

#if BYTE_ORDER == LITTLE_ENDIAN

#define NATIVE_LE 1

#elif BYTE_ORDER == BIG_ENDIAN

#define NATIVE_LE 0

#else

/* not defined */

#endif

* Default bytes per sample for the given bits per sample.

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* Samples are numbers in the interval [-1, 1[, note that 1, the upper

* boundary is excluded. We represent them in 16-bit signed fixed point

* boundary is excluded. We represent them as signed fixed point numbers

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

* of ADATA_BITS. We also assume that 2^(ADATA_BITS - 1) fits in a int.

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

#define ADATA_BITS 16

#define ADATA_LE (BYTE_ORDER == LITTLE_ENDIAN)

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

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_UNIT (1 << (ADATA_BITS - 1))

#define ADATA_MAX (ADATA_UNIT - 1)

#define MIDI_MAXCTL 127

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