diff --git a/DOCS/man/af.rst b/DOCS/man/af.rst
index 8fe60250fb..c52c422299 100644
--- a/DOCS/man/af.rst
+++ b/DOCS/man/af.rst
@@ -312,34 +312,6 @@ Available filters are:
``mpv '--af=format=channels=5.1' '--audio-channels=5.1'`` would always force
remixing audio to 5.1 and output it like this.
-``delay[=[ch1,ch2,...]]``
- Delays the sound to the loudspeakers such that the sound from the
- different channels arrives at the listening position simultaneously. It is
- only useful if you have more than 2 loudspeakers.
-
- ``[ch1,ch2,...]``
- The delay in ms that should be imposed on each channel (floating point
- number between 0 and 1000).
-
- To calculate the required delay for the different channels, do as follows:
-
- 1. Measure the distance to the loudspeakers in meters in relation to your
- listening position, giving you the distances s1 to s5 (for a 5.1
- system). There is no point in compensating for the subwoofer (you will
- not hear the difference anyway).
-
- 2. Subtract the distances s1 to s5 from the maximum distance, i.e.
- ``s[i] = max(s) - s[i]; i = 1...5``.
-
- 3. Calculate the required delays in ms as ``d[i] = 1000*s[i]/342; i =
- 1...5``.
-
- .. admonition:: Example
-
- ``mpv --af=delay=[10.5,10.5,0,0,7,0] media.avi``
- Would delay front left and right by 10.5 ms, the two rear channels
- and the subwoofer by 0 ms and the center channel by 7 ms.
-
``drc[=method:target]``
Applies dynamic range compression. This maximizes the volume by compressing
the audio signal's dynamic range. (Formerly called ``volnorm``.)
diff --git a/audio/filter/af.c b/audio/filter/af.c
index d74e912500..a132965295 100644
--- a/audio/filter/af.c
+++ b/audio/filter/af.c
@@ -31,7 +31,6 @@
#include "af.h"
// Static list of filters
-extern const struct af_info af_info_delay;
extern const struct af_info af_info_channels;
extern const struct af_info af_info_format;
extern const struct af_info af_info_volume;
@@ -46,7 +45,6 @@ extern const struct af_info af_info_lavfi;
extern const struct af_info af_info_rubberband;
static const struct af_info *const filter_list[] = {
- &af_info_delay,
&af_info_channels,
&af_info_format,
&af_info_volume,
diff --git a/audio/filter/af_delay.c b/audio/filter/af_delay.c
deleted file mode 100644
index 8d1cca8a72..0000000000
--- a/audio/filter/af_delay.c
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * This audio filter delays the output signal for the different
- * channels and can be used for simple position panning.
- * An extension for this filter would be a reverb.
- *
- * Original author: Anders
- *
- * This file is part of mpv.
- *
- * mpv is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * mpv is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with mpv. If not, see .
- */
-
-#include
-#include
-#include
-#include
-
-#include "common/common.h"
-#include "af.h"
-
-#define L 65536
-
-#define UPDATEQI(qi) qi=(qi+1)&(L-1)
-
-// Data for specific instances of this filter
-typedef struct af_delay_s
-{
- void* q[AF_NCH]; // Circular queues used for delaying audio signal
- int wi[AF_NCH]; // Write index
- int ri; // Read index
- float d[AF_NCH]; // Delay [ms]
- char *delaystr;
-}af_delay_t;
-
-// Initialization and runtime control
-static int control(struct af_instance* af, int cmd, void* arg)
-{
- af_delay_t* s = af->priv;
- switch(cmd){
- case AF_CONTROL_REINIT:{
- int i;
- struct mp_audio *in = arg;
-
- if (in->bps != 1 && in->bps != 2 && in->bps != 4) {
- MP_FATAL(af, "Sample format not supported\n");
- return AF_ERROR;
- }
-
- // Free prevous delay queues
- for(i=0;idata->nch;i++)
- free(s->q[i]);
-
- mp_audio_force_interleaved_format(in);
- mp_audio_copy_config(af->data, in);
-
- // Allocate new delay queues
- for(i=0;idata->nch;i++){
- s->q[i] = calloc(L,af->data->bps);
- if(NULL == s->q[i])
- MP_FATAL(af, "Out of memory\n");
- }
-
- if(AF_OK != af_from_ms(AF_NCH, s->d, s->wi, af->data->rate, 0.0, 1000.0))
- return AF_ERROR;
- s->ri = 0;
- for(i=0;id[i],0.0,1000.0));
- MP_TRACE(af, "Channel %i delayed by %i samples\n",
- i,s->wi[i]);
- }
- return AF_OK;
- }
- }
- return AF_UNKNOWN;
-}
-
-// Deallocate memory
-static void uninit(struct af_instance* af)
-{
- int i;
-
- for(i=0;ipriv))->q[i]);
-}
-
-static int filter_frame(struct af_instance *af, struct mp_audio *c)
-{
- if (!c)
- return 0;
- af_delay_t* s = af->priv; // Setup for this instance
- int nch = c->nch; // Number of channels
- int len = mp_audio_psize(c)/c->bps; // Number of sample in data chunk
- int ri = 0;
- int ch,i;
- if (af_make_writeable(af, c) < 0) {
- talloc_free(c);
- return -1;
- }
- for(ch=0;chbps){
- case 1:{
- int8_t* a = c->planes[0];
- int8_t* q = s->q[ch];
- int wi = s->wi[ch];
- ri = s->ri;
- for(i=ch;iwi[ch] = wi;
- break;
- }
- case 2:{
- int16_t* a = c->planes[0];
- int16_t* q = s->q[ch];
- int wi = s->wi[ch];
- ri = s->ri;
- for(i=ch;iwi[ch] = wi;
- break;
- }
- case 4:{
- int32_t* a = c->planes[0];
- int32_t* q = s->q[ch];
- int wi = s->wi[ch];
- ri = s->ri;
- for(i=ch;iwi[ch] = wi;
- break;
- }
- }
- }
- s->ri = ri;
- af_add_output_frame(af, c);
- return 0;
-}
-
-// Allocate memory and set function pointers
-static int af_open(struct af_instance* af){
- af->control=control;
- af->uninit=uninit;
- af->filter_frame = filter_frame;
- af_delay_t *s = af->priv;
- int n = 1;
- int i = 0;
- char* cl = s->delaystr;
- while(cl && n && i < AF_NCH ){
- sscanf(cl,"%f%n",&s->d[i],&n);
- if(n==0 || cl[n-1] == '\0')
- break;
- cl=&cl[n];
- if (*cl != ',')
- break;
- cl++;
- i++;
- }
- return AF_OK;
-}
-
-#define OPT_BASE_STRUCT af_delay_t
-const struct af_info af_info_delay = {
- .info = "Delay audio filter",
- .name = "delay",
- .open = af_open,
- .priv_size = sizeof(af_delay_t),
- .options = (const struct m_option[]) {
- OPT_STRING("delays", delaystr, 0),
- {0}
- },
-};
diff --git a/wscript_build.py b/wscript_build.py
index a637f79eea..9f30e741a5 100644
--- a/wscript_build.py
+++ b/wscript_build.py
@@ -110,7 +110,6 @@ def build(ctx):
( "audio/decode/dec_audio.c" ),
( "audio/filter/af.c" ),
( "audio/filter/af_channels.c" ),
- ( "audio/filter/af_delay.c" ),
( "audio/filter/af_drc.c" ),
( "audio/filter/af_equalizer.c" ),
( "audio/filter/af_format.c" ),