Make region normalization possible again.

Timeline/Peaks.C

@@ -331,27 +331,19 @@ Peaks::make_peaks ( int chunksize )
 /** return normalization factor for range of samples from /start/ to
     /end/ (uses known peak data if possible */
 
-/* float */
-/* Peaks::normalization_factor( float fpp, nframes_t start, nframes_t end ) const */
-/* { */
-/*     float s; */
-
-/* //    fill_buffer( fpp, start, end ); */
-
-/* /\*     if ( end - start < _peaks->chunksize * 4 ) *\/ */
-/* /\*         fill_buffer( _clip->length() / 4, start, end ); *\/ */
-/* /\*     else *\/ */
-/* /\*         fill_buffer( _clip->length(), start, end ); *\/ */
-
-/*     Peak p = peak( start, end ); */
+float
+//Peaks::normalization_factor( float fpp, nframes_t start, nframes_t end ) const
+Peak::normalization_factor( void ) const
+{
+    float s;
 
-/*     s = 1.0f / fabs( p.max ); */
+    s = 1.0f / fabs( this->max );
 
-/*     if ( s * p.min < -1.0 ) */
-/*         s = 1.0f / fabs( p.min ); */
+    if ( s * this->min < -1.0 )
+        s = 1.0f / fabs( this->min );
 
-/*     return s; */
-/* } */
+    return s;
+}
 
 
 

Timeline/Peaks.H

@@ -26,6 +26,9 @@
 struct Peak {
     float min;
     float max;
+
+    float normalization_factor ( void ) const;
+
 };
 
 class Audio_File;
@@ -94,7 +97,7 @@ public:
     void downsample ( Peak *peaks, int s, int e, float *mhi, float *mlo ) const;
     void read ( int X, float *hi, float *lo ) const;
     bool open ( void );
-    float normalization_factor( float fpp, nframes_t start, nframes_t end ) const;
+//    float normalization_factor( float fpp, nframes_t start, nframes_t end ) ;
 
     bool current ( void ) const;
     bool make_peaks ( int chunksize );

Timeline/Region.C

@@ -742,8 +742,13 @@ Region::normalize ( void )
     printf( "normalize: start=%lu end=%lu\n", _r->start, _r->end );
 
     /* FIXME: figure out a way to do this via the peak server */
-/*     _scale = _clip->peaks( 0 )->normalization_factor( timeline->fpp(), _r->start, _r->end );  */
 
+    int peaks, channels;
+    Peak *pbuf;
+
+    if ( _clip->read_peaks( length(), _r->start, _r->end, &peaks, &pbuf, &channels ) &&
+         peaks )
+        _scale = pbuf->normalization_factor();
 }