#include <float_dsp.h>

Data Fields
void(*	vector_fmul )(float dst, const float src0, const float *src1, int len)
	Calculate the product of two vectors of floats and store the result in a vector of floats.

void(*	vector_fmac_scalar )(float dst, const float src, float mul, int len)
	Multiply a vector of floats by a scalar float and add to destination vector.

void(*	vector_fmul_scalar )(float dst, const float src, float mul, int len)
	Multiply a vector of floats by a scalar float.

void(*	vector_dmul_scalar )(double dst, const double src, double mul, int len)
	Multiply a vector of double by a scalar double.

void(*	vector_fmul_window )(float dst, const float src0, const float src1, const float win, int len)
	Overlap/add with window function.

void(*	vector_fmul_add )(float dst, const float src0, const float src1, const float src2, int len)
	Calculate the product of two vectors of floats, add a third vector of floats and store the result in a vector of floats.

void(*	vector_fmul_reverse )(float dst, const float src0, const float *src1, int len)
	Calculate the product of two vectors of floats, and store the result in a vector of floats.

void(*	butterflies_float )(float av_restrict v1, float av_restrict v2, int len)
	Calculate the sum and difference of two vectors of floats.

float(*	scalarproduct_float )(const float v1, const float v2, int len)
	Calculate the scalar product of two vectors of floats.

Detailed Description

Definition at line 24 of file float_dsp.h.

Field Documentation

void(* AVFloatDSPContext::vector_fmul)(float *dst, const float *src0, const float *src1, int len)

Calculate the product of two vectors of floats and store the result in a vector of floats.

Parameters

dst	output vector constraints: 32-byte aligned
src0	first input vector constraints: 32-byte aligned
src1	second input vector constraints: 32-byte aligned
len	number of elements in the input constraints: multiple of 16

Definition at line 38 of file float_dsp.h.

Referenced by apply_mdct(), apply_window(), apply_window_and_mdct(), avpriv_float_dsp_init(), backward_filter(), do_hybrid_window(), ff_float_dsp_init_mips(), ff_float_dsp_init_neon(), ff_float_dsp_init_ppc(), ff_float_dsp_init_vfp(), ff_float_dsp_init_x86(), imlt(), read_and_decode_spectrum(), sbr_qmf_synthesis(), vorbis_parse_audio_packet(), and windowing_and_mdct_ltp().

void(* AVFloatDSPContext::vector_fmac_scalar)(float *dst, const float *src, float mul, int len)

Multiply a vector of floats by a scalar float and add to destination vector.

Source and destination vectors must overlap exactly or not at all.

Parameters

dst	result vector constraints: 32-byte aligned
src	input vector constraints: 32-byte aligned
mul	scalar value
len	length of vector constraints: multiple of 16

Definition at line 54 of file float_dsp.h.

Referenced by avpriv_float_dsp_init(), dca_decode_frame(), ff_float_dsp_init_neon(), ff_float_dsp_init_x86(), and output_frame().

void(* AVFloatDSPContext::vector_fmul_scalar)(float *dst, const float *src, float mul, int len)

Multiply a vector of floats by a scalar float.

Source and destination vectors must overlap exactly or not at all.

Parameters

dst	result vector constraints: 16-byte aligned
src	input vector constraints: 16-byte aligned
mul	scalar value
len	length of vector constraints: multiple of 4

Definition at line 69 of file float_dsp.h.

Referenced by apply_intensity_stereo(), apply_window_and_mdct(), avpriv_float_dsp_init(), decode_spectrum_and_dequant(), decode_subframe(), ff_float_dsp_init_mips(), ff_float_dsp_init_neon(), ff_float_dsp_init_x86(), filter_frame(), inverse_channel_transform(), and mp3lame_encode_frame().

void(* AVFloatDSPContext::vector_dmul_scalar)(double *dst, const double *src, double mul, int len)

Multiply a vector of double by a scalar double.

Source and destination vectors must overlap exactly or not at all.

Parameters

dst	result vector constraints: 32-byte aligned
src	input vector constraints: 32-byte aligned
mul	scalar value
len	length of vector constraints: multiple of 8

Definition at line 84 of file float_dsp.h.

Referenced by avpriv_float_dsp_init(), ff_float_dsp_init_x86(), and filter_frame().

void(* AVFloatDSPContext::vector_fmul_window)(float *dst, const float *src0, const float *src1, const float *win, int len)

Overlap/add with window function.

Used primarily by MDCT-based audio codecs. Source and destination vectors must overlap exactly or not at all.

Parameters

dst	result vector constraints: 16-byte aligned
src0	first source vector constraints: 16-byte aligned
src1	second source vector constraints: 16-byte aligned
win	half-window vector constraints: 16-byte aligned
len	length of vector constraints: multiple of 4

Definition at line 103 of file float_dsp.h.

Referenced by at1_imdct_block(), avpriv_float_dsp_init(), do_imdct(), ff_float_dsp_init_mips(), ff_float_dsp_init_neon(), ff_float_dsp_init_ppc(), ff_float_dsp_init_x86(), imdct_and_window(), imdct_and_windowing(), nelly_decode_block(), vorbis_parse_audio_packet(), and wmapro_window().

void(* AVFloatDSPContext::vector_fmul_add)(float *dst, const float *src0, const float *src1, const float *src2, int len)

Calculate the product of two vectors of floats, add a third vector of floats and store the result in a vector of floats.

Parameters

dst	output vector constraints: 32-byte aligned
src0	first input vector constraints: 32-byte aligned
src1	second input vector constraints: 32-byte aligned
src1	third input vector constraints: 32-byte aligned
len	number of elements in the input constraints: multiple of 16

Definition at line 121 of file float_dsp.h.

Referenced by avpriv_float_dsp_init(), ff_float_dsp_init_neon(), ff_float_dsp_init_ppc(), ff_float_dsp_init_x86(), sbr_qmf_synthesis(), and wma_window().

void(* AVFloatDSPContext::vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len)

Calculate the product of two vectors of floats, and store the result in a vector of floats.

The second vector of floats is iterated over in reverse order.

Parameters

dst	output vector constraints: 32-byte aligned
src0	first input vector constraints: 32-byte aligned
src1	second input vector constraints: 32-byte aligned
src1	third input vector constraints: 32-byte aligned
len	number of elements in the input constraints: multiple of 16

Definition at line 140 of file float_dsp.h.

Referenced by apply_mdct(), apply_window_and_mdct(), avpriv_float_dsp_init(), ff_float_dsp_init_mips(), ff_float_dsp_init_neon(), ff_float_dsp_init_ppc(), ff_float_dsp_init_vfp(), ff_float_dsp_init_x86(), sbr_qmf_analysis(), update_ltp(), windowing_and_mdct_ltp(), and wma_window().

void(* AVFloatDSPContext::butterflies_float)(float *av_restrict v1, float *av_restrict v2, int len)

Calculate the sum and difference of two vectors of floats.

Parameters

v1	first input vector, sum output, 16-byte aligned
v2	second input vector, difference output, 16-byte aligned
len	length of vectors, multiple of 4

Definition at line 150 of file float_dsp.h.

Referenced by apply_mid_side_stereo(), avpriv_float_dsp_init(), compute_stereo(), ff_float_dsp_init_mips(), ff_float_dsp_init_neon(), imc_decode_frame(), imdct_output(), and wma_decode_block().

float(* AVFloatDSPContext::scalarproduct_float)(const float *v1, const float *v2, int len)

Calculate the scalar product of two vectors of floats.

Parameters

v1	first vector, 16-byte aligned
v2	second vector, 16-byte aligned
len	length of vectors, multiple of 4

Returns: sum of elementwise products

Definition at line 161 of file float_dsp.h.

Referenced by avpriv_float_dsp_init(), decode_spectrum_and_dequant(), ff_float_dsp_init_neon(), and ff_float_dsp_init_x86().

The documentation for this struct was generated from the following file:

libavutil/float_dsp.h

Data Fields

Detailed Description

Field Documentation