From 36600ed5c72a45b99dbf1f878d233940301b53d3 Mon Sep 17 00:00:00 2001
From: Monty <xiphmont@xiph.org>
Date: Fri, 29 Mar 2002 08:18:23 +0000
Subject: [PATCH] Two segfault fixes to new envelope.c [correcting stupid logic
 mistakes] one fix to FABS() for VORBIS_IEEE_FLOAT32

svn path=/trunk/vorbis/; revision=3200
---
 lib/envelope.c | 25 +++++++++++++++----------
 lib/scales.h   |  4 ++--
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/lib/envelope.c b/lib/envelope.c
index 160cccc..424a82b 100644
--- a/lib/envelope.c
+++ b/lib/envelope.c
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: PCM data envelope analysis 
- last mod: $Id: envelope.c,v 1.45 2002/03/29 07:10:39 xiphmont Exp $
+ last mod: $Id: envelope.c,v 1.46 2002/03/29 08:18:23 xiphmont Exp $
 
  ********************************************************************/
 
@@ -245,7 +245,7 @@ long _ve_envelope_search(vorbis_dsp_state *v){
 
     if(ret&2){
       ve->mark[j]=1;
-      ve->mark[j-1]=1;
+      if(j>0)ve->mark[j-1]=1;
     }
   }
 
@@ -264,10 +264,13 @@ long _ve_envelope_search(vorbis_dsp_state *v){
     while(j<ve->current-(ve->searchstep)){/* account for postecho
                                              working back one window */
       if(j>=testW)return(1);
+ 
+      ve->cursor=j;
+
       if(ve->mark[j/ve->searchstep]){
 	if(j>centerW){
 
-	  #if 0
+#if 0
 	  if(j>ve->curmark){
 	    float *marker=alloca(v->pcm_current*sizeof(*marker));
 	    int l,m;
@@ -295,17 +298,16 @@ long _ve_envelope_search(vorbis_dsp_state *v){
 	      for(l=0;l<last;l++)marker[l*ve->searchstep]=ve->filter[m+VE_BANDS].markers[l]*.1;
 	      _analysis_output_always(buf,seq,marker,v->pcm_current,0,0,totalshift);
 	    }
-
+	    
 	    for(l=0;l<last;l++)marker[l*ve->searchstep]=ve->stretchm[l]*.1;
 	    _analysis_output_always("stretch",seq,marker,v->pcm_current,0,0,totalshift);
-
+	    
 	    seq++;
-
+	    
 	  }
-	  #endif
+#endif
 
 	  ve->curmark=j;
-	  ve->cursor=j;
 	  if(j>=testW)return(1);
 	  return(0);
 	}
@@ -313,8 +315,7 @@ long _ve_envelope_search(vorbis_dsp_state *v){
       j+=ve->searchstep;
     }
   }
-  ve->cursor=j;
- 
+  
   return(-1);
 }
 
@@ -369,3 +370,7 @@ void _ve_envelope_shift(envelope_lookup *e,long shift){
 }
 
 
+
+
+
+
diff --git a/lib/scales.h b/lib/scales.h
index 0817fc5..e7ec555 100644
--- a/lib/scales.h
+++ b/lib/scales.h
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: linear scale -> dB, Bark and Mel scales
- last mod: $Id: scales.h,v 1.23 2002/03/29 07:10:39 xiphmont Exp $
+ last mod: $Id: scales.h,v 1.24 2002/03/29 08:18:23 xiphmont Exp $
 
  ********************************************************************/
 
@@ -31,7 +31,7 @@ static float unitnorm(float x){
 }
 
 static float FABS(float *x){
-  ogg_uint32_t *ix=(ogg_uint32_t *)&x;
+  ogg_uint32_t *ix=(ogg_uint32_t *)x;
   *ix&=0x7fffffffUL;
   return(*x);
 }
-- 
2.7.4