FFmpeg: libavutil/fixed_dsp.h File Reference

FFmpeg

fixed_dsp.h File Reference

#include <stdint.h>
#include "attributes.h"
#include "common.h"
#include "libavcodec/mathops.h"

Data Structures

Allocate and initialize a fixed DSP context.

Calculate the square root.

AVFixedDSPContext* avpriv_alloc_fixed_dsp ( int strict )

Allocate and initialize a fixed DSP context.

note: should be freed with a av_free call when no longer needed.

Parameters: strict setting to non-zero avoids using functions which may not be IEEE-754 compliant

Definition at line 91 of file fixed_dsp.c.

static av_always_inline int fixed_sqrt ( int x,

int bits

)

static

Calculate the square root.

Parameters: x input fixed point number

bits format of fixed point number (32 - bits).bits

note: input is normalized to (0, 1) fixed point value

Definition at line 115 of file fixed_dsp.h.

Generated on Sun Mar 8 2015 02:35:32 for FFmpeg by doxygen 1.8.2