af_earwax.c File Reference

#include "libavutil/channel_layout.h"
#include "avfilter.h"
#include "audio.h"
#include "formats.h"

Go to the source code of this file.

Data Structures
struct	EarwaxContext

Macros
#define	NUMTAPS   32

Functions
static int	query_formats (AVFilterContext *ctx)
static int16_t *	scalarproduct (const int16_t *in, const int16_t *endin, const int16_t *filt, int16_t *out)
static int	config_input (AVFilterLink *inlink)
static void	convolve (AVFilterContext *ctx, AVFrame *in, int input_ch, int output_ch, int filter_ch, int tap_ch)
static void	mix (AVFilterContext *ctx, AVFrame *out, int output_ch, int f0, int f1, int i0, int i1)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const int8_t	filt [NUMTAPS *2]
static const AVFilterPad	earwax_inputs []
const AVFilter	ff_af_earwax

Detailed Description

Stereo Widening Effect. Adds audio cues to move stereo image in front of the listener. Adapted from the libsox earwax effect.

Definition in file af_earwax.c.

Macro Definition Documentation

NUMTAPS

#define NUMTAPS   32

Definition at line 37 of file af_earwax.c.

Function Documentation

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 81 of file af_earwax.c.

scalarproduct()

static int16_t* scalarproduct ( const int16_t *  in, const int16_t *  endin, const int16_t *  filt, int16_t *  out  )

inlinestatic

Definition at line 100 of file af_earwax.c.

Referenced by convolve().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 118 of file af_earwax.c.

convolve()

static void convolve ( AVFilterContext *  ctx, AVFrame *  in, int  input_ch, int  output_ch, int  filter_ch, int  tap_ch  )

static

Definition at line 130 of file af_earwax.c.

Referenced by filter_frame().

mix()

static void mix ( AVFilterContext *  ctx, AVFrame *  out, int  output_ch, int  f0, int  f1, int  i0, int  i1  )

static

Definition at line 159 of file af_earwax.c.

Referenced by filter_frame().

filter_frame()

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 171 of file af_earwax.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 208 of file af_earwax.c.

Variable Documentation

filt

const int8_t filt[NUMTAPS *2]

static

Definition at line 39 of file af_earwax.c.

Referenced by apply_tns(), avfilter_graph_create_filter(), avfilter_insert_filter(), common_hv_2ht_2vt_4x4_msa(), common_hv_2ht_2vt_4x8_msa(), common_hv_2ht_2vt_8x4_msa(), common_hv_2ht_2vt_8x8mult_msa(), common_hv_2ht_2vt_and_aver_dst_4x4_msa(), common_hv_2ht_2vt_and_aver_dst_4x8_msa(), common_hv_2ht_2vt_and_aver_dst_8x4_msa(), common_hv_2ht_2vt_and_aver_dst_8x8mult_msa(), common_hv_8ht_8vt_4w_msa(), common_hv_8ht_8vt_8w_msa(), common_hv_8ht_8vt_and_aver_dst_4w_msa(), common_hv_8ht_8vt_and_aver_dst_8w_msa(), common_hz_2t_4x4_msa(), common_hz_2t_4x8_msa(), common_hz_2t_8x4_msa(), common_hz_2t_8x8mult_msa(), common_hz_2t_and_aver_dst_4x4_msa(), common_hz_2t_and_aver_dst_4x8_msa(), common_hz_2t_and_aver_dst_8x4_msa(), common_hz_2t_and_aver_dst_8x8mult_msa(), common_hz_4t_12w_msa(), common_hz_4t_16w_msa(), common_hz_4t_24w_msa(), common_hz_4t_32w_msa(), common_hz_4t_4x16_msa(), common_hz_4t_4x2_msa(), common_hz_4t_4x4_msa(), common_hz_4t_4x8_msa(), common_hz_4t_6w_msa(), common_hz_4t_8x2mult_msa(), common_hz_4t_8x4mult_msa(), common_hz_6t_4x4_msa(), common_hz_6t_4x8_msa(), common_hz_8t_12w_msa(), common_hz_8t_16w_msa(), common_hz_8t_24w_msa(), common_hz_8t_32w_msa(), common_hz_8t_48w_msa(), common_hz_8t_4x16_msa(), common_hz_8t_4x4_msa(), common_hz_8t_4x8_msa(), common_hz_8t_64w_msa(), common_hz_8t_8w_msa(), common_hz_8t_8x4_msa(), common_hz_8t_8x8mult_msa(), common_hz_8t_and_aver_dst_16w_msa(), common_hz_8t_and_aver_dst_32w_msa(), common_hz_8t_and_aver_dst_4x4_msa(), common_hz_8t_and_aver_dst_4x8_msa(), common_hz_8t_and_aver_dst_64w_msa(), common_hz_8t_and_aver_dst_8w_msa(), common_vt_2t_4x4_msa(), common_vt_2t_4x8_msa(), common_vt_2t_8x4_msa(), common_vt_2t_8x8mult_msa(), common_vt_2t_and_aver_dst_4x4_msa(), common_vt_2t_and_aver_dst_4x8_msa(), common_vt_2t_and_aver_dst_8x4_msa(), common_vt_2t_and_aver_dst_8x8mult_msa(), common_vt_4t_16w_msa(), common_vt_4t_24w_msa(), common_vt_4t_32w_msa(), common_vt_4t_4x2_msa(), common_vt_4t_4x4multiple_msa(), common_vt_4t_8x2_msa(), common_vt_4t_8x4mult_msa(), common_vt_4t_8x6_msa(), common_vt_8t_12w_msa(), common_vt_8t_16w_msa(), common_vt_8t_16w_mult_msa(), common_vt_8t_4w_msa(), common_vt_8t_8w_msa(), common_vt_8t_and_aver_dst_16w_mult_msa(), common_vt_8t_and_aver_dst_4w_msa(), common_vt_8t_and_aver_dst_8w_msa(), config_input(), decode_filter(), decode_tns(), ff_aac_apply_tns(), ff_aac_encode_tns_info(), ff_avg_bilin_16h_msa(), ff_avg_bilin_16hv_msa(), ff_avg_bilin_16v_msa(), ff_avg_bilin_32h_msa(), ff_avg_bilin_32v_msa(), ff_avg_bilin_64h_msa(), ff_avg_bilin_64v_msa(), ff_put_bilin_16h_msa(), ff_put_bilin_16hv_msa(), ff_put_bilin_16v_msa(), ff_put_bilin_32h_msa(), ff_put_bilin_32v_msa(), ff_put_bilin_64h_msa(), ff_put_bilin_64v_msa(), ff_put_vp8_bilinear16_h_msa(), ff_put_vp8_bilinear16_hv_msa(), ff_put_vp8_bilinear16_v_msa(), ff_put_vp8_epel16_h4_msa(), ff_put_vp8_epel16_h6_msa(), ff_put_vp8_epel16_v4_msa(), ff_put_vp8_epel16_v6_msa(), ff_put_vp8_epel4_h4v4_msa(), ff_put_vp8_epel4_h4v6_msa(), ff_put_vp8_epel4_h6v4_msa(), ff_put_vp8_epel4_h6v6_msa(), ff_put_vp8_epel4_v4_msa(), ff_put_vp8_epel4_v6_msa(), ff_put_vp8_epel8_h4_msa(), ff_put_vp8_epel8_h4v4_msa(), ff_put_vp8_epel8_h4v6_msa(), ff_put_vp8_epel8_h6_msa(), ff_put_vp8_epel8_h6v4_msa(), ff_put_vp8_epel8_h6v6_msa(), ff_put_vp8_epel8_v4_msa(), ff_put_vp8_epel8_v6_msa(), ff_vk_init_sampler(), filter16_brng(), filter16_tout(), filter16_vrep(), filter8_brng(), filter8_tout(), filter8_vrep(), graph_check_validity(), graph_config_links(), and scalarproduct().

earwax_inputs

const AVFilterPad earwax_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .filter_frame = filter_frame,
        .config_props = config_input,
    },
}

Definition at line 216 of file af_earwax.c.

ff_af_earwax

const AVFilter ff_af_earwax

Initial value:

= {
    .name           = "earwax",
    .description    = NULL_IF_CONFIG_SMALL("Widen the stereo image."),
    .priv_size      = sizeof(EarwaxContext),
    .uninit         = uninit,
    FILTER_INPUTS(earwax_inputs),
    FILTER_OUTPUTS(ff_audio_default_filterpad),
    FILTER_QUERY_FUNC(query_formats),
}

Definition at line 225 of file af_earwax.c.