diff --git a/libs/libopus/CMakeLists.txt b/libs/libopus/CMakeLists.txt
index 4cad2651..0da204f4 100644
--- a/libs/libopus/CMakeLists.txt
+++ b/libs/libopus/CMakeLists.txt
@@ -179,7 +179,6 @@ add_library(opus STATIC
     src/mlp.c
     src/mlp_data.c
     src/opus.c
-    src/opus_compare.c
     src/opus_decoder.c
     src/opus_encoder.c
     src/opus_multistream.c
diff --git a/libs/libopus/src/opus_compare.c b/libs/libopus/src/opus_compare.c
deleted file mode 100644
index 1956e08f..00000000
--- a/libs/libopus/src/opus_compare.c
+++ /dev/null
@@ -1,382 +0,0 @@
-/* Copyright (c) 2011-2012 Xiph.Org Foundation, Mozilla Corporation
-   Written by Jean-Marc Valin and Timothy B. Terriberry */
-/*
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions
-   are met:
-
-   - Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-
-   - Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
-   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-
-#define OPUS_PI (3.14159265F)
-
-#define OPUS_COSF(_x)        ((float)cos(_x))
-#define OPUS_SINF(_x)        ((float)sin(_x))
-
-static void *check_alloc(void *_ptr){
-  if(_ptr==NULL){
-    fprintf(stderr,"Out of memory.\n");
-    exit(EXIT_FAILURE);
-  }
-  return _ptr;
-}
-
-static void *opus_malloc(size_t _size){
-  return check_alloc(malloc(_size));
-}
-
-static void *opus_realloc(void *_ptr,size_t _size){
-  return check_alloc(realloc(_ptr,_size));
-}
-
-static size_t read_pcm16(float **_samples,FILE *_fin,int _nchannels){
-  unsigned char  buf[1024];
-  float         *samples;
-  size_t         nsamples;
-  size_t         csamples;
-  size_t         xi;
-  size_t         nread;
-  samples=NULL;
-  nsamples=csamples=0;
-  for(;;){
-    nread=fread(buf,2*_nchannels,1024/(2*_nchannels),_fin);
-    if(nread<=0)break;
-    if(nsamples+nread>csamples){
-      do csamples=csamples<<1|1;
-      while(nsamples+nread>csamples);
-      samples=(float *)opus_realloc(samples,
-       _nchannels*csamples*sizeof(*samples));
-    }
-    for(xi=0;xi<nread;xi++){
-      int ci;
-      for(ci=0;ci<_nchannels;ci++){
-        int s;
-        s=buf[2*(xi*_nchannels+ci)+1]<<8|buf[2*(xi*_nchannels+ci)];
-        s=((s&0xFFFF)^0x8000)-0x8000;
-        samples[(nsamples+xi)*_nchannels+ci]=s;
-      }
-    }
-    nsamples+=nread;
-  }
-  *_samples=(float *)opus_realloc(samples,
-   _nchannels*nsamples*sizeof(*samples));
-  return nsamples;
-}
-
-static void band_energy(float *_out,float *_ps,const int *_bands,int _nbands,
- const float *_in,int _nchannels,size_t _nframes,int _window_sz,
- int _step,int _downsample){
-  float *window;
-  float *x;
-  float *c;
-  float *s;
-  size_t xi;
-  int    xj;
-  int    ps_sz;
-  window=(float *)opus_malloc((3+_nchannels)*_window_sz*sizeof(*window));
-  c=window+_window_sz;
-  s=c+_window_sz;
-  x=s+_window_sz;
-  ps_sz=_window_sz/2;
-  for(xj=0;xj<_window_sz;xj++){
-    window[xj]=0.5F-0.5F*OPUS_COSF((2*OPUS_PI/(_window_sz-1))*xj);
-  }
-  for(xj=0;xj<_window_sz;xj++){
-    c[xj]=OPUS_COSF((2*OPUS_PI/_window_sz)*xj);
-  }
-  for(xj=0;xj<_window_sz;xj++){
-    s[xj]=OPUS_SINF((2*OPUS_PI/_window_sz)*xj);
-  }
-  for(xi=0;xi<_nframes;xi++){
-    int ci;
-    int xk;
-    int bi;
-    for(ci=0;ci<_nchannels;ci++){
-      for(xk=0;xk<_window_sz;xk++){
-        x[ci*_window_sz+xk]=window[xk]*_in[(xi*_step+xk)*_nchannels+ci];
-      }
-    }
-    for(bi=xj=0;bi<_nbands;bi++){
-      float p[2]={0};
-      for(;xj<_bands[bi+1];xj++){
-        for(ci=0;ci<_nchannels;ci++){
-          float re;
-          float im;
-          int   ti;
-          ti=0;
-          re=im=0;
-          for(xk=0;xk<_window_sz;xk++){
-            re+=c[ti]*x[ci*_window_sz+xk];
-            im-=s[ti]*x[ci*_window_sz+xk];
-            ti+=xj;
-            if(ti>=_window_sz)ti-=_window_sz;
-          }
-          re*=_downsample;
-          im*=_downsample;
-          _ps[(xi*ps_sz+xj)*_nchannels+ci]=re*re+im*im+100000;
-          p[ci]+=_ps[(xi*ps_sz+xj)*_nchannels+ci];
-        }
-      }
-      if(_out){
-        _out[(xi*_nbands+bi)*_nchannels]=p[0]/(_bands[bi+1]-_bands[bi]);
-        if(_nchannels==2){
-          _out[(xi*_nbands+bi)*_nchannels+1]=p[1]/(_bands[bi+1]-_bands[bi]);
-        }
-      }
-    }
-  }
-  free(window);
-}
-
-#define NBANDS (21)
-#define NFREQS (240)
-
-/*Bands on which we compute the pseudo-NMR (Bark-derived
-  CELT bands).*/
-static const int BANDS[NBANDS+1]={
-  0,2,4,6,8,10,12,14,16,20,24,28,32,40,48,56,68,80,96,120,156,200
-};
-
-#define TEST_WIN_SIZE (480)
-#define TEST_WIN_STEP (120)
-
-int main(int _argc,const char **_argv){
-  FILE    *fin1;
-  FILE    *fin2;
-  float   *x;
-  float   *y;
-  float   *xb;
-  float   *X;
-  float   *Y;
-  double    err;
-  float    Q;
-  size_t   xlength;
-  size_t   ylength;
-  size_t   nframes;
-  size_t   xi;
-  int      ci;
-  int      xj;
-  int      bi;
-  int      nchannels;
-  unsigned rate;
-  int      downsample;
-  int      ybands;
-  int      yfreqs;
-  int      max_compare;
-  if(_argc<3||_argc>6){
-    fprintf(stderr,"Usage: %s [-s] [-r rate2] <file1.sw> <file2.sw>\n",
-     _argv[0]);
-    return EXIT_FAILURE;
-  }
-  nchannels=1;
-  if(strcmp(_argv[1],"-s")==0){
-    nchannels=2;
-    _argv++;
-  }
-  rate=48000;
-  ybands=NBANDS;
-  yfreqs=NFREQS;
-  downsample=1;
-  if(strcmp(_argv[1],"-r")==0){
-    rate=atoi(_argv[2]);
-    if(rate!=8000&&rate!=12000&&rate!=16000&&rate!=24000&&rate!=48000){
-      fprintf(stderr,
-       "Sampling rate must be 8000, 12000, 16000, 24000, or 48000\n");
-      return EXIT_FAILURE;
-    }
-    downsample=48000/rate;
-    switch(rate){
-      case  8000:ybands=13;break;
-      case 12000:ybands=15;break;
-      case 16000:ybands=17;break;
-      case 24000:ybands=19;break;
-    }
-    yfreqs=NFREQS/downsample;
-    _argv+=2;
-  }
-  fin1=fopen(_argv[1],"rb");
-  if(fin1==NULL){
-    fprintf(stderr,"Error opening '%s'.\n",_argv[1]);
-    return EXIT_FAILURE;
-  }
-  fin2=fopen(_argv[2],"rb");
-  if(fin2==NULL){
-    fprintf(stderr,"Error opening '%s'.\n",_argv[2]);
-    fclose(fin1);
-    return EXIT_FAILURE;
-  }
-  /*Read in the data and allocate scratch space.*/
-  xlength=read_pcm16(&x,fin1,2);
-  if(nchannels==1){
-    for(xi=0;xi<xlength;xi++)x[xi]=.5*(x[2*xi]+x[2*xi+1]);
-  }
-  fclose(fin1);
-  ylength=read_pcm16(&y,fin2,nchannels);
-  fclose(fin2);
-  if(xlength!=ylength*downsample){
-    fprintf(stderr,"Sample counts do not match (%lu!=%lu).\n",
-     (unsigned long)xlength,(unsigned long)ylength*downsample);
-    return EXIT_FAILURE;
-  }
-  if(xlength<TEST_WIN_SIZE){
-    fprintf(stderr,"Insufficient sample data (%lu<%i).\n",
-     (unsigned long)xlength,TEST_WIN_SIZE);
-    return EXIT_FAILURE;
-  }
-  nframes=(xlength-TEST_WIN_SIZE+TEST_WIN_STEP)/TEST_WIN_STEP;
-  xb=(float *)opus_malloc(nframes*NBANDS*nchannels*sizeof(*xb));
-  X=(float *)opus_malloc(nframes*NFREQS*nchannels*sizeof(*X));
-  Y=(float *)opus_malloc(nframes*yfreqs*nchannels*sizeof(*Y));
-  /*Compute the per-band spectral energy of the original signal
-     and the error.*/
-  band_energy(xb,X,BANDS,NBANDS,x,nchannels,nframes,
-   TEST_WIN_SIZE,TEST_WIN_STEP,1);
-  free(x);
-  band_energy(NULL,Y,BANDS,ybands,y,nchannels,nframes,
-   TEST_WIN_SIZE/downsample,TEST_WIN_STEP/downsample,downsample);
-  free(y);
-  for(xi=0;xi<nframes;xi++){
-    /*Frequency masking (low to high): 10 dB/Bark slope.*/
-    for(bi=1;bi<NBANDS;bi++){
-      for(ci=0;ci<nchannels;ci++){
-        xb[(xi*NBANDS+bi)*nchannels+ci]+=
-         0.1F*xb[(xi*NBANDS+bi-1)*nchannels+ci];
-      }
-    }
-    /*Frequency masking (high to low): 15 dB/Bark slope.*/
-    for(bi=NBANDS-1;bi-->0;){
-      for(ci=0;ci<nchannels;ci++){
-        xb[(xi*NBANDS+bi)*nchannels+ci]+=
-         0.03F*xb[(xi*NBANDS+bi+1)*nchannels+ci];
-      }
-    }
-    if(xi>0){
-      /*Temporal masking: -3 dB/2.5ms slope.*/
-      for(bi=0;bi<NBANDS;bi++){
-        for(ci=0;ci<nchannels;ci++){
-          xb[(xi*NBANDS+bi)*nchannels+ci]+=
-           0.5F*xb[((xi-1)*NBANDS+bi)*nchannels+ci];
-        }
-      }
-    }
-    /* Allowing some cross-talk */
-    if(nchannels==2){
-      for(bi=0;bi<NBANDS;bi++){
-        float l,r;
-        l=xb[(xi*NBANDS+bi)*nchannels+0];
-        r=xb[(xi*NBANDS+bi)*nchannels+1];
-        xb[(xi*NBANDS+bi)*nchannels+0]+=0.01F*r;
-        xb[(xi*NBANDS+bi)*nchannels+1]+=0.01F*l;
-      }
-    }
-
-    /* Apply masking */
-    for(bi=0;bi<ybands;bi++){
-      for(xj=BANDS[bi];xj<BANDS[bi+1];xj++){
-        for(ci=0;ci<nchannels;ci++){
-          X[(xi*NFREQS+xj)*nchannels+ci]+=
-           0.1F*xb[(xi*NBANDS+bi)*nchannels+ci];
-          Y[(xi*yfreqs+xj)*nchannels+ci]+=
-           0.1F*xb[(xi*NBANDS+bi)*nchannels+ci];
-        }
-      }
-    }
-  }
-
-  /* Average of consecutive frames to make comparison slightly less sensitive */
-  for(bi=0;bi<ybands;bi++){
-    for(xj=BANDS[bi];xj<BANDS[bi+1];xj++){
-      for(ci=0;ci<nchannels;ci++){
-         float xtmp;
-         float ytmp;
-         xtmp = X[xj*nchannels+ci];
-         ytmp = Y[xj*nchannels+ci];
-         for(xi=1;xi<nframes;xi++){
-           float xtmp2;
-           float ytmp2;
-           xtmp2 = X[(xi*NFREQS+xj)*nchannels+ci];
-           ytmp2 = Y[(xi*yfreqs+xj)*nchannels+ci];
-           X[(xi*NFREQS+xj)*nchannels+ci] += xtmp;
-           Y[(xi*yfreqs+xj)*nchannels+ci] += ytmp;
-           xtmp = xtmp2;
-           ytmp = ytmp2;
-         }
-      }
-    }
-  }
-
-  /*If working at a lower sampling rate, don't take into account the last
-     300 Hz to allow for different transition bands.
-    For 12 kHz, we don't skip anything, because the last band already skips
-     400 Hz.*/
-  if(rate==48000)max_compare=BANDS[NBANDS];
-  else if(rate==12000)max_compare=BANDS[ybands];
-  else max_compare=BANDS[ybands]-3;
-  err=0;
-  for(xi=0;xi<nframes;xi++){
-    double Ef;
-    Ef=0;
-    for(bi=0;bi<ybands;bi++){
-      double Eb;
-      Eb=0;
-      for(xj=BANDS[bi];xj<BANDS[bi+1]&&xj<max_compare;xj++){
-        for(ci=0;ci<nchannels;ci++){
-          float re;
-          float im;
-          re=Y[(xi*yfreqs+xj)*nchannels+ci]/X[(xi*NFREQS+xj)*nchannels+ci];
-          im=re-log(re)-1;
-          /*Make comparison less sensitive around the SILK/CELT cross-over to
-            allow for mode freedom in the filters.*/
-          if(xj>=79&&xj<=81)im*=0.1F;
-          if(xj==80)im*=0.1F;
-          Eb+=im;
-        }
-      }
-      Eb /= (BANDS[bi+1]-BANDS[bi])*nchannels;
-      Ef += Eb*Eb;
-    }
-    /*Using a fixed normalization value means we're willing to accept slightly
-       lower quality for lower sampling rates.*/
-    Ef/=NBANDS;
-    Ef*=Ef;
-    err+=Ef*Ef;
-  }
-  free(xb);
-  free(X);
-  free(Y);
-  err=pow(err/nframes,1.0/16);
-  Q=100*(1-0.5*log(1+err)/log(1.13));
-  if(Q<0){
-    fprintf(stderr,"Test vector FAILS\n");
-    fprintf(stderr,"Internal weighted error is %f\n",err);
-    return EXIT_FAILURE;
-  }
-  else{
-    fprintf(stderr,"Test vector PASSES\n");
-    fprintf(stderr,
-     "Opus quality metric: %.1f %% (internal weighted error is %f)\n",Q,err);
-    return EXIT_SUCCESS;
-  }
-}