mlib_SignalLimit_F32S_F32S man page on SunOS
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mlib_SignalLimit(3MLIB) mediaLib Library Functions mlib_SignalLimit(3MLIB)
NAME
mlib_SignalLimit, mlib_SignalLimit_S16_S16, mlib_SignalLimit_S16S_S16S,
mlib_SignalLimit_S16, mlib_SignalLimit_S16S, mlib_SignalLimit_F32_F32,
mlib_SignalLimit_F32S_F32S, mlib_SignalLimit_F32, mlib_SignalLimit_F32S
- signal hard limiting
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_SignalLimit_S16_S16(mlib_s16 *dst,
const mlib_s16 *src, const mlib_s16 *low,
const mlib_s16 *high, mlib_s32 n);
mlib_status mlib_SignalLimit_S16S_S16S(mlib_s16 *dst,
const mlib_s16 *src, const mlib_s16 *low,
const mlib_s16 *high, mlib_s32 n);
mlib_status mlib_SignalLimit_S16(mlib_s16 *srcdst,
const mlib_s16 *low, const mlib_s16 *high, mlib_s32 n);
mlib_status mlib_SignalLimit_S16S(mlib_s16 *srcdst,
const mlib_s16 *low, const mlib_s16 *high, mlib_s32 n);
mlib_status mlib_SignalLimit_F32_F32(mlib_f32 *dst,
const mlib_f32 *src, const mlib_f32 *low,
const mlib_f32 *high, mlib_s32 n);
mlib_status mlib_SignalLimit_F32S_F32S(mlib_f32 *dst,
const mlib_f32 *src, const mlib_f32 *low,
const mlib_f32 *high, mlib_s32 n);
mlib_status mlib_SignalLimit_F32(mlib_f32 *srcdst,
const mlib_f32 *low, const mlib_f32 *high, mlib_s32 n);
mlib_status mlib_SignalLimit_F32S(mlib_f32 *srcdst,
const mlib_f32 *low, const mlib_f32 *high, mlib_s32 n);
DESCRIPTION
Each of these functions performs hard limiting.
For monaural signals, the following equation is used:
dst[i] = low[0] if src[i] < low[0]
dst[i] = src[i] if low[0] ≤ src[i] < high[0]
dst[i] = high[0] if src[i] ≥ high[0]
where i = 0, 1, ..., (n - 1).
For stereo signals, the following equation is used:
dst[2*i] = low[0] if src[2*i] < low[0]
dst[2*i] = src[2*i] if low[0] ≤ src[2*i] < high[0]
dst[2*i] = high[0] if src[2*i] ≥ high[0]
dst[2*i+1] = low[1] if src[2*i+1] < low[1]
dst[2*i+1] = src[2*i+1] if low[1] ≤ src[2*i+1] < high[1]
dst[2*i+1] = high[1] if src[2*i+1] ≥ high[1]
where i = 0, 1, ..., (n - 1).
PARAMETERS
Each of the functions takes some of the following arguments:
dst Destination signal array.
src Source signal array.
srcdst Source and destination signal array.
low Lower input limit. In the stereo version, low[0] contains the
lower limit for channel 0, and low[1] contains the lower
limit for channel 1.
high Upper input limit. In the stereo version. high[0] contains
the upper limit for channel 0, and high[1] contains the upper
limit for channel 1.
n Number of samples in the source signal array.
RETURN VALUES
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it
returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSO
attributes(5)
SunOS 5.10 2 Mar 2007 mlib_SignalLimit(3MLIB)
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