From 7039a05147b8bbfc829babea1c65bd436450b505 Mon Sep 17 00:00:00 2001
From: Björn Stenberg <bjorn@haxx.se>
Date: Mon, 8 Jan 2007 23:53:00 +0000
Subject: Splitting out songdbj

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11953 a1c6a512-1295-4272-9138-f99709370657
---
 songdbj/com/jcraft/jorbis/Floor0.java | 352 ----------------------------------
 1 file changed, 352 deletions(-)
 delete mode 100644 songdbj/com/jcraft/jorbis/Floor0.java

(limited to 'songdbj/com/jcraft/jorbis/Floor0.java')

diff --git a/songdbj/com/jcraft/jorbis/Floor0.java b/songdbj/com/jcraft/jorbis/Floor0.java
deleted file mode 100644
index 3f1d1c32d5..0000000000
--- a/songdbj/com/jcraft/jorbis/Floor0.java
+++ /dev/null
@@ -1,352 +0,0 @@
-/* JOrbis
- * Copyright (C) 2000 ymnk, JCraft,Inc.
- *  
- * Written by: 2000 ymnk<ymnk@jcraft.com>
- *   
- * Many thanks to 
- *   Monty <monty@xiph.org> and 
- *   The XIPHOPHORUS Company http://www.xiph.org/ .
- * JOrbis has been based on their awesome works, Vorbis codec.
- *   
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public License
- * as published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
-   
- * This program 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 Library General Public License for more details.
- * 
- * You should have received a copy of the GNU Library General Public
- * License along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-package com.jcraft.jorbis;
-
-import com.jcraft.jogg.*;
-
-class Floor0 extends FuncFloor{
-
-  void pack(Object i, Buffer opb){
-    InfoFloor0 info=(InfoFloor0)i;
-    opb.write(info.order,8);
-    opb.write(info.rate,16);
-    opb.write(info.barkmap,16);
-    opb.write(info.ampbits,6);
-    opb.write(info.ampdB,8);
-    opb.write(info.numbooks-1,4);
-    for(int j=0;j<info.numbooks;j++)
-      opb.write(info.books[j],8);
-  }
-
-  Object unpack(Info vi , Buffer opb){
-    InfoFloor0 info=new InfoFloor0();
-    info.order=opb.read(8);
-    info.rate=opb.read(16);
-    info.barkmap=opb.read(16);
-    info.ampbits=opb.read(6);
-    info.ampdB=opb.read(8);
-    info.numbooks=opb.read(4)+1;
-  
-    if((info.order<1)||
-       (info.rate<1)||
-       (info.barkmap<1)||
-       (info.numbooks<1)){
-      //free_info(info);
-      return(null);
-    }
-
-    for(int j=0;j<info.numbooks;j++){
-      info.books[j]=opb.read(8);
-      if(info.books[j]<0 || info.books[j]>=vi.books){
-	//free_info(info);
-	return(null);
-      }
-    }
-    return(info);  
-//  err_out:
-//    free_info(info);
-//    return(NULL);
-  }
-  Object look(DspState vd, InfoMode mi, Object i){
-    float scale;
-    Info vi=vd.vi;
-    InfoFloor0 info=(InfoFloor0)i;
-    LookFloor0 look=new LookFloor0();
-    look.m=info.order;
-    look.n=vi.blocksizes[mi.blockflag]/2;
-    look.ln=info.barkmap;
-    look.vi=info;
-    look.lpclook.init(look.ln,look.m);
-
-    // we choose a scaling constant so that:
-    //  floor(bark(rate/2-1)*C)=mapped-1
-    // floor(bark(rate/2)*C)=mapped
-    scale=look.ln/toBARK((float)(info.rate/2.));
-
-    // the mapping from a linear scale to a smaller bark scale is
-    // straightforward.  We do *not* make sure that the linear mapping
-    // does not skip bark-scale bins; the decoder simply skips them and
-    // the encoder may do what it wishes in filling them.  They're
-    // necessary in some mapping combinations to keep the scale spacing
-    // accurate
-    look.linearmap=new int[look.n];
-    for(int j=0;j<look.n;j++){
-      int val=(int)Math.floor(toBARK((float)((info.rate/2.)/look.n*j)) 
-		              *scale); // bark numbers represent band edges
-      if(val>=look.ln)val=look.ln; // guard against the approximation
-      look.linearmap[j]=val;
-    }
-    return look;
-  }
-
-  static float toBARK(float f){
-    return (float)(13.1*Math.atan(.00074*(f))+2.24*Math.atan((f)*(f)*1.85e-8)+1e-4*(f));
-  }
-
-  Object state(Object i){
-    EchstateFloor0 state=new EchstateFloor0();
-    InfoFloor0 info=(InfoFloor0)i;
-
-    // a safe size if usually too big (dim==1)
-    state.codewords=new int[info.order];
-    state.curve=new float[info.barkmap];
-    state.frameno=-1;
-    return(state);
-  }
-  void free_info(Object i){}
-  void free_look(Object i){}
-  void free_state(Object vs){}
-  int forward(Block vb, Object i,  float[] in, float[] out, Object vs){return 0;}
-
-  float[] lsp=null;    
-  int inverse(Block vb, Object i, float[] out){
-    //System.err.println("Floor0.inverse "+i.getClass()+"]");
-    LookFloor0 look=(LookFloor0)i;
-    InfoFloor0 info=look.vi;
-    int ampraw=vb.opb.read(info.ampbits);
-    if(ampraw>0){ // also handles the -1 out of data case
-      int maxval=(1<<info.ampbits)-1;
-      float amp=(float)ampraw/maxval*info.ampdB;
-      int booknum=vb.opb.read(ilog(info.numbooks));
-
-      if(booknum!=-1 && booknum<info.numbooks){
-
-        synchronized(this){ 
-        if(lsp==null||lsp.length<look.m){
-          lsp=new float[look.m];
-        }	  
-        else{
-          for(int j=0; j<look.m; j++)lsp[j]=0.f;
-        }
-
-	CodeBook b=vb.vd.fullbooks[info.books[booknum]];
-	float last=0.f;
-
-	//memset(out,0,sizeof(float)*look->m);
-        for(int j=0; j<look.m; j++)out[j]=0.0f;
-
-        for(int j=0;j<look.m;j+=b.dim){
-	  if(b.decodevs(lsp, j, vb.opb, 1, -1)==-1){
-	    //goto eop;
-	    // memset(out,0,sizeof(float)*look->n);
-            for(int k=0; k<look.n; k++)out[k]=0.0f;
-	    return(0);
-	  }
-	}
-	for(int j=0;j<look.m;){
-	  for(int k=0;k<b.dim;k++,j++)lsp[j]+=last;
-	  last=lsp[j-1];
-	}
-	// take the coefficients back to a spectral envelope curve
-	/*
-	lsp_to_lpc(out,out,look.m); 
-	lpc_to_curve(out,out,amp,look,"",0);
-	for(int j=0;j<look.n;j++){
-	  out[j]=fromdB(out[j]-info.ampdB);
-	}
-	*/
-	Lsp.lsp_to_curve(out,look.linearmap,look.n,look.ln,                 
-			 lsp,look.m,amp,info.ampdB);    
-
-	return(1);
-	}
-      }
-    }
-//  eop:
-//    memset(out,0,sizeof(float)*look->n);
-    return(0);
-  }
-
-  Object inverse1(Block vb, Object i, Object memo){
-    //System.err.println("Floor0.inverse "+i.getClass()+"]");
-    LookFloor0 look=(LookFloor0)i;
-    InfoFloor0 info=look.vi;
-    float[] lsp=null;
-    if(memo instanceof float[]){
-      lsp=(float[])memo;
-    }
-
-    int ampraw=vb.opb.read(info.ampbits);
-    if(ampraw>0){ // also handles the -1 out of data case
-      int maxval=(1<<info.ampbits)-1;
-      float amp=(float)ampraw/maxval*info.ampdB;
-      int booknum=vb.opb.read(ilog(info.numbooks));
-
-      if(booknum!=-1 && booknum<info.numbooks){
-	CodeBook b=vb.vd.fullbooks[info.books[booknum]];
-	float last=0.f;
-
-        if(lsp==null||lsp.length<look.m+1){
-          lsp=new float[look.m+1];
-        }	  
-        else{
-          for(int j=0; j<lsp.length; j++)lsp[j]=0.f;
-        }
-
-        for(int j=0;j<look.m;j+=b.dim){
-	  if(b.decodev_set(lsp, j, vb.opb, b.dim)==-1){
-	    //goto eop;
-	    return(null);
-	  }
-	}
-
-	for(int j=0;j<look.m;){
-	  for(int k=0;k<b.dim;k++,j++)lsp[j]+=last;
-	  last=lsp[j-1];
-	}
-        lsp[look.m]=amp;
-	return(lsp);
-      }
-    }
-//  eop:
-    return(null);
-  }
-
-  int inverse2(Block vb, Object i, Object memo, float[] out){
-    //System.err.println("Floor0.inverse "+i.getClass()+"]");
-    LookFloor0 look=(LookFloor0)i;
-    InfoFloor0 info=look.vi;
-
-    if(memo!=null){
-      float[] lsp=(float[])memo;
-      float amp=lsp[look.m];
-
-      Lsp.lsp_to_curve(out,look.linearmap,look.n,look.ln,                 
-		       lsp,look.m,amp,info.ampdB);    
-      return(1);
-    }
-//  eop:
-//    memset(out,0,sizeof(float)*look->n);
-    for(int j=0; j<look.n; j++){
-      out[j]=0.f;
-    } 
-    return(0);
-  }
-
-  static float fromdB(float x){
-    return (float)(Math.exp((x)*.11512925));
-  }
-  private static int ilog(int v){
-    int ret=0;
-    while(v!=0){
-      ret++;
-      v>>>=1;
-    }
-    return(ret);
-  }
-
-  static void lsp_to_lpc(float[] lsp, float[] lpc, int m){ 
-    int i,j,m2=m/2;
-    float[] O=new float[m2];
-    float[] E=new float[m2];
-    float A;
-    float[] Ae=new float[m2+1];
-    float[] Ao=new float[m2+1];
-    float B;
-    float[] Be=new float[m2];
-    float[] Bo=new float[m2];
-    float temp;
-
-    // even/odd roots setup
-    for(i=0;i<m2;i++){
-      O[i]=(float)(-2.*Math.cos(lsp[i*2]));
-      E[i]=(float)(-2.*Math.cos(lsp[i*2+1]));
-    }
-
-    // set up impulse response
-    for(j=0;j<m2;j++){
-      Ae[j]=0.f;
-      Ao[j]=1.f;
-      Be[j]=0.f;
-      Bo[j]=1.f;
-    }
-    Ao[j]=1.f;
-    Ae[j]=1.f;
-
-    // run impulse response
-    for(i=1;i<m+1;i++){
-      A=B=0.f;
-      for(j=0;j<m2;j++){
-	temp=O[j]*Ao[j]+Ae[j];
-	Ae[j]=Ao[j];
-	Ao[j]=A;
-	A+=temp;
-
-	temp=E[j]*Bo[j]+Be[j];
-	Be[j]=Bo[j];
-	Bo[j]=B;
-	B+=temp;
-      }
-      lpc[i-1]=(A+Ao[j]+B-Ae[j])/2;
-      Ao[j]=A;
-      Ae[j]=B;
-    }
-  }
-
-  static void lpc_to_curve(float[] curve, float[] lpc,float amp,
-			   LookFloor0 l, String name, int frameno){
-    // l->m+1 must be less than l->ln, but guard in case we get a bad stream
-    float[] lcurve=new float[Math.max(l.ln*2,l.m*2+2)];
-
-    if(amp==0){
-      //memset(curve,0,sizeof(float)*l->n);
-      for(int j=0; j<l.n; j++)curve[j]=0.0f;
-      return;
-    }
-    l.lpclook.lpc_to_curve(lcurve,lpc,amp);
-
-    for(int i=0;i<l.n;i++)curve[i]=lcurve[l.linearmap[i]];
-  }
-}
-
-class InfoFloor0{
-  int order;
-  int rate;
-  int barkmap;
-
-  int   ampbits;
-  int   ampdB;
-
-  int   numbooks; // <= 16
-  int[]  books=new int[16];
-}
-
-class LookFloor0{
-  int n;
-  int ln;
-  int m;
-  int[] linearmap;
-
-  InfoFloor0 vi;
-  Lpc lpclook=new Lpc();
-}
-
-class EchstateFloor0{
-  int[] codewords;
-  float[] curve;
-  long frameno;
-  long codes;
-}
-- 
cgit v1.2.3