[xiph-cvs] cvs commit: vorbis/lib/modes residue_44.h

Monty xiphmont at xiph.org
Sun Dec 23 02:12:05 PST 2001



xiphmont    01/12/23 02:12:04

  Modified:    examples encoder_example.c
               lib      bitrate.c bitrate.h vorbisenc.c
               lib/modes residue_44.h
  Log:
  bitrate management bugfixes and tuning

Revision  Changes    Path
1.33      +15 -3     vorbis/examples/encoder_example.c

Index: encoder_example.c
===================================================================
RCS file: /usr/local/cvsroot/vorbis/examples/encoder_example.c,v
retrieving revision 1.32
retrieving revision 1.33
diff -u -r1.32 -r1.33
--- encoder_example.c	2001/12/20 01:00:24	1.32
+++ encoder_example.c	2001/12/23 10:12:02	1.33
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: simple example encoder
- last mod: $Id: encoder_example.c,v 1.32 2001/12/20 01:00:24 segher Exp $
+ last mod: $Id: encoder_example.c,v 1.33 2001/12/23 10:12:02 xiphmont Exp $
 
  ********************************************************************/
 
@@ -73,6 +73,18 @@
   _setmode( _fileno( stdout ), _O_BINARY );
 #endif
 
+
+#  include <fpu_control.h>
+    unsigned int mask;
+    _FPU_GETCW(mask);
+    /* Set the Linux mask to abort on most FPE's */
+    /* if bit is set, we _mask_ SIGFPE on that error! */
+    /*  mask &= ~( _FPU_MASK_IM | _FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM
++);*/
+    mask &= ~( _FPU_MASK_IM | _FPU_MASK_ZM | _FPU_MASK_OM );
+    _FPU_SETCW(mask);
+
+
   /* we cheat on the WAV header; we just bypass the header and never
      verify that it matches 16bit/stereo/44.1kHz.  This is just an
      example, after all. */
@@ -96,8 +108,8 @@
   /* (quality mode .4: 44kHz stereo coupled, roughly 128kbps VBR) */
   vorbis_info_init(&vi);
 
-  vorbis_encode_init_vbr(&vi,2,44100,.1);
-  /*vorbis_encode_init(&vi,2,44100,70000,64000,-1);*/
+  vorbis_encode_init_vbr(&vi,1,44100,.4);
+  /*vorbis_encode_init(&vi,2,44100,64000,-1,-1);*/
 
   /* add a comment */
   vorbis_comment_init(&vc);

1.7       +145 -107  vorbis/lib/bitrate.c

Index: bitrate.c
===================================================================
RCS file: /usr/local/cvsroot/vorbis/lib/bitrate.c,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- bitrate.c	2001/12/19 08:10:03	1.6
+++ bitrate.c	2001/12/23 10:12:03	1.7
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: bitrate tracking and management
- last mod: $Id: bitrate.c,v 1.6 2001/12/19 08:10:03 xiphmont Exp $
+ last mod: $Id: bitrate.c,v 1.7 2001/12/23 10:12:03 xiphmont Exp $
 
  ********************************************************************/
 
@@ -25,7 +25,26 @@
 #include "os.h"
 #include "bitrate.h"
 
-#define BINBITS(pos,bin) ((bin)>0?bm->queue_binned[(pos)*bins+(bin)-1]:0)
+
+static long BINBITS(bitrate_manager_state *bm,long pos,long inbin){
+  int bins=bm->queue_bins;
+  int bin=((inbin&0x7fffffffUL)>>BITTRACK_BPT);
+  ogg_uint32_t lobits=0;
+  ogg_uint32_t hibits=0;
+  ogg_uint32_t bitdel;
+  
+  if(bin>0)lobits=bm->queue_binned[pos*bins+bin-1];
+  if(bin<bins)
+    hibits=bm->queue_binned[pos*bins+bin];
+  else
+    hibits=lobits;
+
+  bitdel=hibits-lobits;
+
+  return(lobits+bitdel*(inbin&((1<<BITTRACK_BPT)-1))/(1<<BITTRACK_BPT));
+
+}
+
 #define LIMITBITS(pos,bin) ((bin)>-bins?\
                  bm->minmax_binstack[(pos)*bins*2+((bin)+bins)-1]:0)
 
@@ -59,7 +78,7 @@
     return bin/(double)BITTRACK_DIVISOR;
   }else{
     double delta=(desired_rate-lobitrate)/(hibitrate-lobitrate);
-    return (bin+delta)/(double)BITTRACK_DIVISOR;
+    return (bin+delta)/BITTRACK_DIVISOR;
   }
 }
 
@@ -124,11 +143,11 @@
       if((bi->queue_hardmin>0 || bi->queue_hardmax>0) &&
          bi->queue_minmax_time>0){
         
-	bm->minmax_binstack=_ogg_malloc((bins+1)*bins*2*
+	bm->minmax_binstack=_ogg_calloc((bins+1)*bins*2,
                                         sizeof(bm->minmax_binstack));
-	bm->minmax_posstack=_ogg_malloc((bins+1)*
+	bm->minmax_posstack=_ogg_calloc((bins+1),
                                       sizeof(bm->minmax_posstack));
-	bm->minmax_limitstack=_ogg_malloc((bins+1)*
+	bm->minmax_limitstack=_ogg_calloc((bins+1),
                                           sizeof(bm->minmax_limitstack));
       }else{
         bm->minmax_tail= -1;
@@ -273,102 +292,106 @@
     bm->avg_sampleacc+=ci->blocksizes[vb->W]>>1;
     bm->avg_centeracc+=ci->blocksizes[vb->W]>>1;
 
-    /* update the avg tail if needed */
-    while(bm->avg_sampleacc>bm->avg_sampledesired){
-      int samples=
-	ci->blocksizes[bm->queue_actual[bm->avg_tail]&0x80000000UL?1:0]>>1;
-      for(i=0;i<bm->queue_bins;i++)
-	bm->avg_binacc[i]-=LACING_ADJUST(bm->queue_binned[bins*bm->avg_tail+i]);
-      bm->avg_sampleacc-=samples;
-      bm->avg_tail++;
-      if(bm->avg_tail>=bm->queue_size)bm->avg_tail=0;
-    }
-    
-    /* update the avg center */
-    if(bm->avg_centeracc>desired_center){
-      /* choose the new average floater */
-      double upper=floater_interpolate(bm,vi,bi->queue_avgmax);
-      double lower=floater_interpolate(bm,vi,bi->queue_avgmin);
-      double new=bi->avgfloat_initial,slew;
-      int bin;
-
-      if(upper>0. && upper<new)new=upper;
-      if(lower<bi->avgfloat_minimum)
-        lower=bi->avgfloat_minimum;
-      if(lower>new)new=lower;
-
-      slew=new-bm->avgfloat;
-
-      if(slew<bi->avgfloat_downhyst || slew>bi->avgfloat_uphyst){
-        if(slew<bi->avgfloat_downslew_max)
-          new=bm->avgfloat+bi->avgfloat_downslew_max;
-        if(slew>bi->avgfloat_upslew_max)
-          new=bm->avgfloat+bi->avgfloat_upslew_max;
-        
-        bm->avgfloat=new;
+    if(bm->avg_sampleacc>bm->avg_sampledesired || eofflag){
+
+      /* update the avg tail if needed */
+      while(bm->avg_sampleacc>bm->avg_sampledesired){
+	int samples=
+	  ci->blocksizes[bm->queue_actual[bm->avg_tail]&0x80000000UL?1:0]>>1;
+	for(i=0;i<bm->queue_bins;i++)
+	  bm->avg_binacc[i]-=LACING_ADJUST(bm->queue_binned[bins*bm->avg_tail+i]);
+	bm->avg_sampleacc-=samples;
+	bm->avg_tail++;
+	if(bm->avg_tail>=bm->queue_size)bm->avg_tail=0;
       }
       
-      /* apply the average floater to new blocks */
-      bin=bm->avgfloat*BITTRACK_DIVISOR; /* truncate on purpose */
-      while(bm->avg_centeracc>desired_center){
-	int samples=
+      /* update the avg center */
+      if(bm->avg_centeracc>desired_center){
+	/* choose the new average floater */
+	int samples=ci->blocksizes[vb->W]>>1;
+	double upper=floater_interpolate(bm,vi,bi->queue_avgmax);
+	double lower=floater_interpolate(bm,vi,bi->queue_avgmin);
+	double new=bi->avgfloat_initial,slew;
+	int bin;
+	
+	if(upper>0. && upper<new)new=upper;
+	if(lower<bi->avgfloat_minimum)
+	  lower=bi->avgfloat_minimum;
+	if(lower>new)new=lower;
+	
+	slew=(new-bm->avgfloat)/samples*vi->rate;
+	
+	if(slew<bi->avgfloat_downhyst || slew>bi->avgfloat_uphyst){
+	  if(slew<bi->avgfloat_downslew_max)
+	    new=bm->avgfloat+bi->avgfloat_downslew_max/vi->rate*samples;
+	  if(slew>bi->avgfloat_upslew_max)
+	    new=bm->avgfloat+bi->avgfloat_upslew_max/vi->rate*samples;
+	  
+	  bm->avgfloat=new;
+	}
+	
+	/* apply the average floater to new blocks */
+	bin=bm->avgfloat*(BITTRACK_DIVISOR<<BITTRACK_BPT);
+	
+	while(bm->avg_centeracc>desired_center){
           samples=ci->blocksizes[bm->queue_actual[bm->avg_center]&
                                 0x80000000UL?1:0]>>1;
+	  
+	  bm->queue_actual[bm->avg_center]|=bin;
+	  
+	  bm->avg_centeracc-=samples;
+	  bm->avg_center++;
+	  if(bm->noisetrigger_postpone)bm->noisetrigger_postpone-=samples;
+	  if(bm->avg_center>=bm->queue_size)bm->avg_center=0;
+	}
+	new_minmax_head=bm->avg_center;
         
-	bm->queue_actual[bm->avg_center]|=bin;
+	/* track noise bias triggers and noise bias */
+	if(bm->avgfloat<bi->avgfloat_noise_lowtrigger)
+	  bm->noisetrigger_request+=1.f;
+	else
+	  if(bm->noisetrigger_request>0. && bm->avgnoise>0.)
+	    bm->noisetrigger_request-=.2f;
         
-	bm->avg_centeracc-=samples;
-	bm->avg_center++;
-	if(bm->noisetrigger_postpone)bm->noisetrigger_postpone-=samples;
-	if(bm->avg_center>=bm->queue_size)bm->avg_center=0;
-      }
-      new_minmax_head=bm->avg_center;
-      
-      /* track noise bias triggers and noise bias */
-      if(bm->avgfloat<bi->avgfloat_noise_lowtrigger)
-	bm->noisetrigger_request+=1.f;
-      else
-	if(bm->noisetrigger_request>0. && bm->avgnoise>0.)
-	  bm->noisetrigger_request-=.2f;
-
-      if(bm->avgfloat>bi->avgfloat_noise_hightrigger)
-	bm->noisetrigger_request-=1.f;
-      else
-	if(bm->noisetrigger_request<0 && bm->avgnoise<0.)
-	  bm->noisetrigger_request+=.2f;
-
-      if(bm->noisetrigger_postpone<=0){
-	if(bm->noisetrigger_request<0.){
-	  bm->avgnoise-=1.f;
-	  if(-bm->noisetrigger_request>(signed long)(bm->avg_sampleacc)/2)
-            bm->avgnoise-=1.f;
-	  bm->noisetrigger_postpone=bm->avg_sampleacc/2;
-	}
-	if(bm->noisetrigger_request>0.){
-	  bm->avgnoise+=1.f;
-	  if(bm->noisetrigger_request>(signed long)(bm->avg_sampleacc)/2)
+	if(bm->avgfloat>bi->avgfloat_noise_hightrigger)
+	  bm->noisetrigger_request-=1.f;
+	else
+	  if(bm->noisetrigger_request<0 && bm->avgnoise<0.)
+	    bm->noisetrigger_request+=.2f;
+	
+	if(bm->noisetrigger_postpone<=0){
+	  if(bm->noisetrigger_request<0.){
+	    bm->avgnoise-=1.f;
+	    if(-bm->noisetrigger_request>(signed long)(bm->avg_sampleacc)/2)
+	      bm->avgnoise-=1.f;
+	    bm->noisetrigger_postpone=bm->avg_sampleacc/2;
+	  }
+	  if(bm->noisetrigger_request>0.){
             bm->avgnoise+=1.f;
-	  bm->noisetrigger_postpone=bm->avg_sampleacc/2;
-	}
+	    if(bm->noisetrigger_request>(signed long)(bm->avg_sampleacc)/2)
+	      bm->avgnoise+=1.f;
+	    bm->noisetrigger_postpone=bm->avg_sampleacc/2;
+	  }
 
-	/* we generally want the noise bias to drift back to zero */
-	bm->noisetrigger_request=0.f;
-	if(bm->avgnoise>0)
-	  bm->noisetrigger_request= -1.;
-	if(bm->avgnoise<0)
-	  bm->noisetrigger_request= +1.;
-
-	if(bm->avgnoise<bi->avgfloat_noise_minval)
-	  bm->avgnoise=bi->avgfloat_noise_minval;
-	if(bm->avgnoise>bi->avgfloat_noise_maxval)
-	  bm->avgnoise=bi->avgfloat_noise_maxval;
+	  /* we generally want the noise bias to drift back to zero */
+	  bm->noisetrigger_request=0.f;
+	  if(bm->avgnoise>0)
+	    bm->noisetrigger_request= -1.;
+	  if(bm->avgnoise<0)
+	    bm->noisetrigger_request= +1.;
+	  
+	  if(bm->avgnoise<bi->avgfloat_noise_minval)
+	    bm->avgnoise=bi->avgfloat_noise_minval;
+	  if(bm->avgnoise>bi->avgfloat_noise_maxval)
+	    bm->avgnoise=bi->avgfloat_noise_maxval;
+	}
       }
     }
   }else{
     /* if we're not using an average tracker, the 'float' is nailed to
        the avgfloat_initial value.  It needs to be set for the min/max
        to deal properly */
-    long bin=bi->avgfloat_initial*BITTRACK_DIVISOR; /* truncate on purpose */
+    long bin=bi->avgfloat_initial*(BITTRACK_DIVISOR<<BITTRACK_BPT);
     bm->queue_actual[head]|=bin;
     new_minmax_head=next_head;
   }	
@@ -406,15 +429,19 @@
       for(i=0;i<(unsigned int)bins;i++){
         bm->minmax_binstack[bm->minmax_stackptr*bins*2+bins+i]+=
           LACING_ADJUST(
-	  BINBITS(minmax_head,
-		  (bm->queue_actual[minmax_head]&0x7fffffffUL)>i+1?
-		  (bm->queue_actual[minmax_head]&0x7fffffffUL):i+1));
+	  BINBITS(bm,minmax_head,
+		  (bm->queue_actual[minmax_head]&0x7fffffffUL)>
+		  ((i+1)<<BITTRACK_BPT)?
+		  bm->queue_actual[minmax_head]:
+		  ((i+1)<<BITTRACK_BPT)));
         
         bm->minmax_binstack[bm->minmax_stackptr*bins*2+i]+=
           LACING_ADJUST(
-	  BINBITS(minmax_head,
-		  (bm->queue_actual[minmax_head]&0x7fffffffUL)<i+1?
-		  (bm->queue_actual[minmax_head]&0x7fffffffUL):i+1));
+	  BINBITS(bm,minmax_head,
+		  (bm->queue_actual[minmax_head]&0x7fffffffUL)<
+		  ((i+1)<<BITTRACK_BPT)?
+		  bm->queue_actual[minmax_head]:
+		  ((i+1)<<BITTRACK_BPT)));
       }
       
       bm->minmax_posstack[bm->minmax_stackptr]=minmax_head; /* not one
@@ -425,7 +452,7 @@
       bm->minmax_sampleacc+=samples;
       bm->minmax_acctotal+=
         LACING_ADJUST(
-	BINBITS(minmax_head,(bm->queue_actual[minmax_head]&0x7fffffffUL)));
+	BINBITS(bm,minmax_head,bm->queue_actual[minmax_head]));
       
       minmax_head++;
       if(minmax_head>=bm->queue_size)minmax_head=0;
@@ -441,8 +468,9 @@
         int newstack;
         int stackctr;
         long bitsum=limit_sum(bm,0);
+
         bitrate=(double)bitsum/bm->minmax_sampleacc*vi->rate;
-	
+
         /* we're off rate.  Iteratively try out new hard floater
            limits until we find one that brings us inside.  Here's
            where we see the whole point of the limit stacks.  */
@@ -461,6 +489,11 @@
           if(bitrate>bi->queue_hardmax)limit--;
         }
 
+	for(i=limit-1;i>-bins;i--){
+	  long bitsum=limit_sum(bm,i);
+	  bitrate=(double)bitsum/bm->minmax_sampleacc*vi->rate;
+	}
+
         bitsum=limit_sum(bm,limit);
         bitrate=(double)bitsum/bm->minmax_sampleacc*vi->rate;
 
@@ -510,22 +543,27 @@
 
       for(i=0;i<bins;i++){
         bm->minmax_binstack[bins+i]-= /* always comes off the stack bottom */
-	  LACING_ADJUST(BINBITS(bm->minmax_tail,actual>i+1?actual:i+1));
+	  LACING_ADJUST(BINBITS(bm,bm->minmax_tail,
+				actual>((i+1)<<BITTRACK_BPT)?
+				actual:((i+1)<<BITTRACK_BPT)));
         bm->minmax_binstack[i]-= 
-	  LACING_ADJUST(BINBITS(bm->minmax_tail,actual<i+1?actual:i+1));
+	  LACING_ADJUST(BINBITS(bm,bm->minmax_tail,
+				actual<((i+1)<<BITTRACK_BPT)?
+				actual:((i+1)<<BITTRACK_BPT)));
       }
 
       /* always perform in this order; max overrules min */
-      if(bm->minmax_limitstack[0]>actual)
-	actual=bm->minmax_limitstack[0];
-      if(bins+bm->minmax_limitstack[0]<actual)
-	actual=bins+bm->minmax_limitstack[0];
+      if((bm->minmax_limitstack[0]<<BITTRACK_BPT)>actual)
+	actual=(bm->minmax_limitstack[0]<<BITTRACK_BPT);
+      if(((bins+bm->minmax_limitstack[0])<<BITTRACK_BPT)<actual)
+	actual=(bins+bm->minmax_limitstack[0])<<BITTRACK_BPT;
 
-      bm->minmax_acctotal-=LACING_ADJUST(BINBITS(bm->minmax_tail,actual));
+      bm->minmax_acctotal-=LACING_ADJUST(BINBITS(bm,bm->minmax_tail,actual));
       bm->minmax_sampleacc-=samples;
      
       /* revise queue_actual to reflect the limit */
-      bm->queue_actual[bm->minmax_tail]=actual;
+      bm->queue_actual[bm->minmax_tail]&=0x80000000UL;
+      bm->queue_actual[bm->minmax_tail]|=actual;
       
       if(bm->minmax_tail==bm->minmax_posstack[0]){
         /* the stack becomes a FIFO; the first data has fallen off */
@@ -563,14 +601,13 @@
     bm->queue_head=0;
 
   }else{
-    long bins=bm->queue_bins;
     long bin;
     long bytes;
 
     if(bm->next_to_flush==bm->last_to_flush)return(0);
 
-    bin=bm->queue_actual[bm->next_to_flush]&0x7fffffffUL;
-    bytes=(BINBITS(bm->next_to_flush,bin)+7)/8;
+    bin=bm->queue_actual[bm->next_to_flush];
+    bytes=(BINBITS(bm,bm->next_to_flush,bin)+7)/8;
     
     memcpy(op,bm->queue_packets+bm->next_to_flush,sizeof(*op));
     if(bytes<op->bytes)op->bytes=bytes;
@@ -578,6 +615,7 @@
     bm->next_to_flush++;
     if(bm->next_to_flush>=bm->queue_size)bm->next_to_flush=0;
 
+    if(bytes==0)exit(1);
   }
 
   return(1);

1.4       +2 -1      vorbis/lib/bitrate.h

Index: bitrate.h
===================================================================
RCS file: /usr/local/cvsroot/vorbis/lib/bitrate.h,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- bitrate.h	2001/12/19 07:33:51	1.3
+++ bitrate.h	2001/12/23 10:12:03	1.4
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: bitrate tracking and management
- last mod: $Id: bitrate.h,v 1.3 2001/12/19 07:33:51 xiphmont Exp $
+ last mod: $Id: bitrate.h,v 1.4 2001/12/23 10:12:03 xiphmont Exp $
 
  ********************************************************************/
 
@@ -24,6 +24,7 @@
 
 /* encode side bitrate tracking */
 #define BITTRACK_DIVISOR 16
+#define BITTRACK_BPT     6
 typedef struct bitrate_manager_state {
   ogg_uint32_t  *queue_binned;
   ogg_uint32_t  *queue_actual;

1.32      +5 -15     vorbis/lib/vorbisenc.c

Index: vorbisenc.c
===================================================================
RCS file: /usr/local/cvsroot/vorbis/lib/vorbisenc.c,v
retrieving revision 1.31
retrieving revision 1.32
diff -u -r1.31 -r1.32
--- vorbisenc.c	2001/12/22 09:40:39	1.31
+++ vorbisenc.c	2001/12/23 10:12:03	1.32
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: simple programmatic interface for encoder mode setup
- last mod: $Id: vorbisenc.c,v 1.31 2001/12/22 09:40:39 xiphmont Exp $
+ last mod: $Id: vorbisenc.c,v 1.32 2001/12/23 10:12:03 xiphmont Exp $
 
  ********************************************************************/
 
@@ -914,6 +914,7 @@
                                 long nominal_bitrate,
                                 long min_bitrate){
 
+  double tnominal=nominal_bitrate;
   double approx_vbr=approx_bitrate_to_vbr(channels,(channels==2), 
                                           (float)nominal_bitrate,rate);
   int ret=0;
@@ -973,18 +974,15 @@
     ci->bi.queue_hardmin=min_bitrate;
     ci->bi.queue_hardmax=max_bitrate;
     
-    ci->bi.queue_avgmin=nominal_bitrate;
-    ci->bi.queue_avgmax=nominal_bitrate;
+    ci->bi.queue_avgmin=tnominal;
+    ci->bi.queue_avgmax=tnominal;
 
     /* adjust management */
     if(max_bitrate<=0. && min_bitrate<=0.){
       /* just an average tracker; no reason for the window to be as small as 2s. */
-      ci->bi.queue_avg_time=4.;
+      //ci->bi.queue_avg_time=4.;
     }
     ci->bi.avgfloat_noise_maxval=_bm_max_noise_offset[(int)approx_vbr];
-    /*if(max_bitrate>0.){
-      ci->bi.avgfloat_minimum=0.;
-      }*/
 
   }
   return(ret);
@@ -1016,11 +1014,3 @@
 int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg){
   return(OV_EIMPL);
 }
-		       
-
-
-
-
-
-
-

1.10      +5 -5      vorbis/lib/modes/residue_44.h

Index: residue_44.h
===================================================================
RCS file: /usr/local/cvsroot/vorbis/lib/modes/residue_44.h,v
retrieving revision 1.9
retrieving revision 1.10
diff -u -r1.9 -r1.10
--- residue_44.h	2001/12/20 01:00:38	1.9
+++ residue_44.h	2001/12/23 10:12:04	1.10
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: toplevel residue templates for 32/44.1/48kHz
- last mod: $Id: residue_44.h,v 1.9 2001/12/20 01:00:38 segher Exp $
+ last mod: $Id: residue_44.h,v 1.10 2001/12/23 10:12:04 xiphmont Exp $
 
  ********************************************************************/
 
@@ -20,14 +20,14 @@
 
 static bitrate_manager_info _bm_44_default={
   /* progressive coding and bitrate controls */
-  2.,.5,
+  4.,.0,
   2.,       0,           0,  
             0,           0,
            
-  4.0,2.3, -1.,              .05, 
-            -.05,             .05,
+  4.0,2.3, -350,              .02, 
+            -.00,             .00,
   3.2,5.0,
-  -6.f,+2.f
+  0.,0.
 };
 
 /***** residue backends *********************************************/

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