audio/filter: remove delay audio filter

Similar filter is available in libavfilter.

2 files changed, 0 insertions, 196 deletions

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 <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
-
-#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;i<af->data->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;i<af->data->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;i<AF_NCH;i++){
-      MP_DBG(af, "Channel %i delayed by %0.3fms\n",
-             i,MPCLAMP(s->d[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;i<AF_NCH;i++)
-      free(((af_delay_t*)(af->priv))->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;ch<nch;ch++){
-    switch(c->bps){
-    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;i<len;i+=nch){
-        q[wi] = a[i];
-        a[i]  = q[ri];
-        UPDATEQI(wi);
-        UPDATEQI(ri);
-      }
-      s->wi[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;i<len;i+=nch){
-        q[wi] = a[i];
-        a[i]  = q[ri];
-        UPDATEQI(wi);
-        UPDATEQI(ri);
-      }
-      s->wi[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;i<len;i+=nch){
-        q[wi] = a[i];
-        a[i]  = q[ri];
-        UPDATEQI(wi);
-        UPDATEQI(ri);
-      }
-      s->wi[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}
-    },
-};