author | unc0rr |
Wed, 19 Jun 2013 00:52:39 +0400 | |
branch | webgl |
changeset 9267 | dbd18257be8f |
parent 7849 | a12155461b34 |
permissions | -rw-r--r-- |
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1 |
/******************************************************************** |
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* * |
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* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * |
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4 |
* * |
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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* * |
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* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * |
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* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * |
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* * |
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12 |
******************************************************************** |
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|
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function: floor backend 1 implementation |
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********************************************************************/ |
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|
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#include <stdlib.h> |
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#include <string.h> |
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#include <math.h> |
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#include "ogg.h" |
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#include "ivorbiscodec.h" |
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#include "codec_internal.h" |
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#include "registry.h" |
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#include "codebook.h" |
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#include "misc.h" |
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#include "block.h" |
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#define floor1_rangedB 140 /* floor 1 fixed at -140dB to 0dB range */ |
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typedef struct { |
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int forward_index[VIF_POSIT+2]; |
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int hineighbor[VIF_POSIT]; |
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int loneighbor[VIF_POSIT]; |
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int posts; |
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int n; |
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int quant_q; |
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vorbis_info_floor1 *vi; |
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} vorbis_look_floor1; |
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/***********************************************/ |
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static void floor1_free_info(vorbis_info_floor *i){ |
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vorbis_info_floor1 *info=(vorbis_info_floor1 *)i; |
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if(info){ |
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memset(info,0,sizeof(*info)); |
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_ogg_free(info); |
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} |
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} |
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static void floor1_free_look(vorbis_look_floor *i){ |
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vorbis_look_floor1 *look=(vorbis_look_floor1 *)i; |
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if(look){ |
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memset(look,0,sizeof(*look)); |
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_ogg_free(look); |
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} |
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} |
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static int ilog(unsigned int v){ |
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int ret=0; |
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64 |
while(v){ |
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65 |
ret++; |
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66 |
v>>=1; |
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67 |
} |
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68 |
return(ret); |
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69 |
} |
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static vorbis_info_floor *floor1_unpack (vorbis_info *vi,oggpack_buffer *opb){ |
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72 |
codec_setup_info *ci=(codec_setup_info *)vi->codec_setup; |
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73 |
int j,k,count=0,maxclass=-1,rangebits; |
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74 |
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75 |
vorbis_info_floor1 *info=(vorbis_info_floor1 *)_ogg_calloc(1,sizeof(*info)); |
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76 |
/* read partitions */ |
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77 |
info->partitions=oggpack_read(opb,5); /* only 0 to 31 legal */ |
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78 |
for(j=0;j<info->partitions;j++){ |
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79 |
info->partitionclass[j]=oggpack_read(opb,4); /* only 0 to 15 legal */ |
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80 |
if(maxclass<info->partitionclass[j])maxclass=info->partitionclass[j]; |
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81 |
} |
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82 |
|
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83 |
/* read partition classes */ |
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84 |
for(j=0;j<maxclass+1;j++){ |
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85 |
info->class_dim[j]=oggpack_read(opb,3)+1; /* 1 to 8 */ |
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86 |
info->class_subs[j]=oggpack_read(opb,2); /* 0,1,2,3 bits */ |
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87 |
if(info->class_subs[j]<0) |
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88 |
goto err_out; |
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89 |
if(info->class_subs[j])info->class_book[j]=oggpack_read(opb,8); |
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90 |
if(info->class_book[j]<0 || info->class_book[j]>=ci->books) |
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91 |
goto err_out; |
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92 |
for(k=0;k<(1<<info->class_subs[j]);k++){ |
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93 |
info->class_subbook[j][k]=oggpack_read(opb,8)-1; |
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94 |
if(info->class_subbook[j][k]<-1 || info->class_subbook[j][k]>=ci->books) |
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95 |
goto err_out; |
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96 |
} |
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97 |
} |
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98 |
|
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99 |
/* read the post list */ |
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100 |
info->mult=oggpack_read(opb,2)+1; /* only 1,2,3,4 legal now */ |
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101 |
rangebits=oggpack_read(opb,4); |
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102 |
|
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103 |
for(j=0,k=0;j<info->partitions;j++){ |
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104 |
count+=info->class_dim[info->partitionclass[j]]; |
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105 |
for(;k<count;k++){ |
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106 |
int t=info->postlist[k+2]=oggpack_read(opb,rangebits); |
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107 |
if(t<0 || t>=(1<<rangebits)) |
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108 |
goto err_out; |
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109 |
} |
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110 |
} |
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111 |
info->postlist[0]=0; |
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112 |
info->postlist[1]=1<<rangebits; |
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113 |
|
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114 |
return(info); |
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115 |
|
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116 |
err_out: |
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117 |
floor1_free_info(info); |
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118 |
return(NULL); |
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119 |
} |
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120 |
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|
121 |
static int icomp(const void *a,const void *b){ |
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|
122 |
return(**(int **)a-**(int **)b); |
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|
123 |
} |
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|
124 |
|
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|
125 |
static vorbis_look_floor *floor1_look(vorbis_dsp_state *vd,vorbis_info_mode *mi, |
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|
126 |
vorbis_info_floor *in){ |
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|
127 |
|
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|
128 |
int *sortpointer[VIF_POSIT+2]; |
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|
129 |
vorbis_info_floor1 *info=(vorbis_info_floor1 *)in; |
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|
130 |
vorbis_look_floor1 *look=(vorbis_look_floor1 *)_ogg_calloc(1,sizeof(*look)); |
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|
131 |
int i,j,n=0; |
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|
132 |
|
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|
133 |
look->vi=info; |
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|
134 |
look->n=info->postlist[1]; |
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|
135 |
|
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|
136 |
/* we drop each position value in-between already decoded values, |
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|
137 |
and use linear interpolation to predict each new value past the |
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|
138 |
edges. The positions are read in the order of the position |
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|
139 |
list... we precompute the bounding positions in the lookup. Of |
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|
140 |
course, the neighbors can change (if a position is declined), but |
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|
141 |
this is an initial mapping */ |
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|
142 |
|
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|
143 |
for(i=0;i<info->partitions;i++)n+=info->class_dim[info->partitionclass[i]]; |
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|
144 |
n+=2; |
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|
145 |
look->posts=n; |
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|
146 |
|
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|
147 |
/* also store a sorted position index */ |
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|
148 |
for(i=0;i<n;i++)sortpointer[i]=info->postlist+i; |
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|
149 |
qsort(sortpointer,n,sizeof(*sortpointer),icomp); |
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|
150 |
|
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|
151 |
/* points from sort order back to range number */ |
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|
152 |
for(i=0;i<n;i++)look->forward_index[i]=sortpointer[i]-info->postlist; |
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|
153 |
|
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|
154 |
/* quantize values to multiplier spec */ |
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|
155 |
switch(info->mult){ |
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|
156 |
case 1: /* 1024 -> 256 */ |
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|
157 |
look->quant_q=256; |
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|
158 |
break; |
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|
159 |
case 2: /* 1024 -> 128 */ |
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|
160 |
look->quant_q=128; |
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|
161 |
break; |
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|
162 |
case 3: /* 1024 -> 86 */ |
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|
163 |
look->quant_q=86; |
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|
164 |
break; |
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|
165 |
case 4: /* 1024 -> 64 */ |
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|
166 |
look->quant_q=64; |
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|
167 |
break; |
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|
168 |
} |
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|
169 |
|
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|
170 |
/* discover our neighbors for decode where we don't use fit flags |
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|
171 |
(that would push the neighbors outward) */ |
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|
172 |
for(i=0;i<n-2;i++){ |
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|
173 |
int lo=0; |
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|
174 |
int hi=1; |
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|
175 |
int lx=0; |
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|
176 |
int hx=look->n; |
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|
177 |
int currentx=info->postlist[i+2]; |
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|
178 |
for(j=0;j<i+2;j++){ |
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|
179 |
int x=info->postlist[j]; |
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|
180 |
if(x>lx && x<currentx){ |
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|
181 |
lo=j; |
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|
182 |
lx=x; |
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|
183 |
} |
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|
184 |
if(x<hx && x>currentx){ |
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|
185 |
hi=j; |
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|
186 |
hx=x; |
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|
187 |
} |
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|
188 |
} |
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|
189 |
look->loneighbor[i]=lo; |
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|
190 |
look->hineighbor[i]=hi; |
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|
191 |
} |
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|
192 |
|
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|
193 |
return(look); |
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|
194 |
} |
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|
195 |
|
5170
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|
196 |
static int render_point(int x0,int x1,int y0,int y1,int x){ |
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|
197 |
y0&=0x7fff; /* mask off flag */ |
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|
198 |
y1&=0x7fff; |
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|
199 |
|
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|
200 |
{ |
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|
201 |
int dy=y1-y0; |
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|
202 |
int adx=x1-x0; |
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|
203 |
int ady=abs(dy); |
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|
204 |
int err=ady*(x-x0); |
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|
205 |
|
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|
206 |
int off=err/adx; |
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|
207 |
if(dy<0)return(y0-off); |
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|
208 |
return(y0+off); |
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changeset
|
209 |
} |
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|
210 |
} |
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|
211 |
|
7849
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|
212 |
#ifdef _LOW_ACCURACY_ |
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|
213 |
# define XdB(n) ((((n)>>8)+1)>>1) |
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|
214 |
#else |
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|
215 |
# define XdB(n) (n) |
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|
216 |
#endif |
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|
217 |
|
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|
218 |
static const ogg_int32_t FLOOR_fromdB_LOOKUP[256]={ |
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|
219 |
XdB(0x000000e5), XdB(0x000000f4), XdB(0x00000103), XdB(0x00000114), |
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|
220 |
XdB(0x00000126), XdB(0x00000139), XdB(0x0000014e), XdB(0x00000163), |
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|
221 |
XdB(0x0000017a), XdB(0x00000193), XdB(0x000001ad), XdB(0x000001c9), |
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|
222 |
XdB(0x000001e7), XdB(0x00000206), XdB(0x00000228), XdB(0x0000024c), |
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|
223 |
XdB(0x00000272), XdB(0x0000029b), XdB(0x000002c6), XdB(0x000002f4), |
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changeset
|
224 |
XdB(0x00000326), XdB(0x0000035a), XdB(0x00000392), XdB(0x000003cd), |
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|
225 |
XdB(0x0000040c), XdB(0x00000450), XdB(0x00000497), XdB(0x000004e4), |
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|
226 |
XdB(0x00000535), XdB(0x0000058c), XdB(0x000005e8), XdB(0x0000064a), |
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|
227 |
XdB(0x000006b3), XdB(0x00000722), XdB(0x00000799), XdB(0x00000818), |
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|
228 |
XdB(0x0000089e), XdB(0x0000092e), XdB(0x000009c6), XdB(0x00000a69), |
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changeset
|
229 |
XdB(0x00000b16), XdB(0x00000bcf), XdB(0x00000c93), XdB(0x00000d64), |
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changeset
|
230 |
XdB(0x00000e43), XdB(0x00000f30), XdB(0x0000102d), XdB(0x0000113a), |
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changeset
|
231 |
XdB(0x00001258), XdB(0x0000138a), XdB(0x000014cf), XdB(0x00001629), |
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changeset
|
232 |
XdB(0x0000179a), XdB(0x00001922), XdB(0x00001ac4), XdB(0x00001c82), |
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changeset
|
233 |
XdB(0x00001e5c), XdB(0x00002055), XdB(0x0000226f), XdB(0x000024ac), |
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changeset
|
234 |
XdB(0x0000270e), XdB(0x00002997), XdB(0x00002c4b), XdB(0x00002f2c), |
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changeset
|
235 |
XdB(0x0000323d), XdB(0x00003581), XdB(0x000038fb), XdB(0x00003caf), |
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changeset
|
236 |
XdB(0x000040a0), XdB(0x000044d3), XdB(0x0000494c), XdB(0x00004e10), |
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changeset
|
237 |
XdB(0x00005323), XdB(0x0000588a), XdB(0x00005e4b), XdB(0x0000646b), |
a12155461b34
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changeset
|
238 |
XdB(0x00006af2), XdB(0x000071e5), XdB(0x0000794c), XdB(0x0000812e), |
a12155461b34
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changeset
|
239 |
XdB(0x00008993), XdB(0x00009283), XdB(0x00009c09), XdB(0x0000a62d), |
a12155461b34
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changeset
|
240 |
XdB(0x0000b0f9), XdB(0x0000bc79), XdB(0x0000c8b9), XdB(0x0000d5c4), |
a12155461b34
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changeset
|
241 |
XdB(0x0000e3a9), XdB(0x0000f274), XdB(0x00010235), XdB(0x000112fd), |
a12155461b34
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changeset
|
242 |
XdB(0x000124dc), XdB(0x000137e4), XdB(0x00014c29), XdB(0x000161bf), |
a12155461b34
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changeset
|
243 |
XdB(0x000178bc), XdB(0x00019137), XdB(0x0001ab4a), XdB(0x0001c70e), |
a12155461b34
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changeset
|
244 |
XdB(0x0001e4a1), XdB(0x0002041f), XdB(0x000225aa), XdB(0x00024962), |
a12155461b34
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changeset
|
245 |
XdB(0x00026f6d), XdB(0x000297f0), XdB(0x0002c316), XdB(0x0002f109), |
a12155461b34
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changeset
|
246 |
XdB(0x000321f9), XdB(0x00035616), XdB(0x00038d97), XdB(0x0003c8b4), |
a12155461b34
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changeset
|
247 |
XdB(0x000407a7), XdB(0x00044ab2), XdB(0x00049218), XdB(0x0004de23), |
a12155461b34
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changeset
|
248 |
XdB(0x00052f1e), XdB(0x0005855c), XdB(0x0005e135), XdB(0x00064306), |
a12155461b34
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changeset
|
249 |
XdB(0x0006ab33), XdB(0x00071a24), XdB(0x0007904b), XdB(0x00080e20), |
a12155461b34
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changeset
|
250 |
XdB(0x00089422), XdB(0x000922da), XdB(0x0009bad8), XdB(0x000a5cb6), |
a12155461b34
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changeset
|
251 |
XdB(0x000b091a), XdB(0x000bc0b1), XdB(0x000c8436), XdB(0x000d5471), |
a12155461b34
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changeset
|
252 |
XdB(0x000e3233), XdB(0x000f1e5f), XdB(0x001019e4), XdB(0x001125c1), |
a12155461b34
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changeset
|
253 |
XdB(0x00124306), XdB(0x001372d5), XdB(0x0014b663), XdB(0x00160ef7), |
a12155461b34
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changeset
|
254 |
XdB(0x00177df0), XdB(0x001904c1), XdB(0x001aa4f9), XdB(0x001c603d), |
a12155461b34
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changeset
|
255 |
XdB(0x001e384f), XdB(0x00202f0f), XdB(0x0022467a), XdB(0x002480b1), |
a12155461b34
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changeset
|
256 |
XdB(0x0026dff7), XdB(0x002966b3), XdB(0x002c1776), XdB(0x002ef4fc), |
a12155461b34
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changeset
|
257 |
XdB(0x0032022d), XdB(0x00354222), XdB(0x0038b828), XdB(0x003c67c2), |
a12155461b34
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changeset
|
258 |
XdB(0x004054ae), XdB(0x004482e8), XdB(0x0048f6af), XdB(0x004db488), |
a12155461b34
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changeset
|
259 |
XdB(0x0052c142), XdB(0x005821ff), XdB(0x005ddc33), XdB(0x0063f5b0), |
a12155461b34
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changeset
|
260 |
XdB(0x006a74a7), XdB(0x00715faf), XdB(0x0078bdce), XdB(0x0080967f), |
a12155461b34
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changeset
|
261 |
XdB(0x0088f1ba), XdB(0x0091d7f9), XdB(0x009b5247), XdB(0x00a56a41), |
a12155461b34
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changeset
|
262 |
XdB(0x00b02a27), XdB(0x00bb9ce2), XdB(0x00c7ce12), XdB(0x00d4ca17), |
a12155461b34
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changeset
|
263 |
XdB(0x00e29e20), XdB(0x00f15835), XdB(0x0101074b), XdB(0x0111bb4e), |
a12155461b34
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changeset
|
264 |
XdB(0x01238531), XdB(0x01367704), XdB(0x014aa402), XdB(0x016020a7), |
a12155461b34
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changeset
|
265 |
XdB(0x017702c3), XdB(0x018f6190), XdB(0x01a955cb), XdB(0x01c4f9cf), |
a12155461b34
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changeset
|
266 |
XdB(0x01e269a8), XdB(0x0201c33b), XdB(0x0223265a), XdB(0x0246b4ea), |
a12155461b34
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changeset
|
267 |
XdB(0x026c9302), XdB(0x0294e716), XdB(0x02bfda13), XdB(0x02ed9793), |
a12155461b34
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changeset
|
268 |
XdB(0x031e4e09), XdB(0x03522ee4), XdB(0x03896ed0), XdB(0x03c445e2), |
a12155461b34
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changeset
|
269 |
XdB(0x0402efd6), XdB(0x0445ac4b), XdB(0x048cbefc), XdB(0x04d87013), |
a12155461b34
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changeset
|
270 |
XdB(0x05290c67), XdB(0x057ee5ca), XdB(0x05da5364), XdB(0x063bb204), |
a12155461b34
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changeset
|
271 |
XdB(0x06a36485), XdB(0x0711d42b), XdB(0x0787710e), XdB(0x0804b299), |
a12155461b34
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changeset
|
272 |
XdB(0x088a17ef), XdB(0x0918287e), XdB(0x09af747c), XdB(0x0a50957e), |
a12155461b34
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changeset
|
273 |
XdB(0x0afc2f19), XdB(0x0bb2ef7f), XdB(0x0c759034), XdB(0x0d44d6ca), |
a12155461b34
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changeset
|
274 |
XdB(0x0e2195bc), XdB(0x0f0cad0d), XdB(0x10070b62), XdB(0x1111aeea), |
a12155461b34
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changeset
|
275 |
XdB(0x122da66c), XdB(0x135c120f), XdB(0x149e24d9), XdB(0x15f525b1), |
a12155461b34
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changeset
|
276 |
XdB(0x176270e3), XdB(0x18e7794b), XdB(0x1a85c9ae), XdB(0x1c3f06d1), |
a12155461b34
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changeset
|
277 |
XdB(0x1e14f07d), XdB(0x200963d7), XdB(0x221e5ccd), XdB(0x2455f870), |
a12155461b34
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changeset
|
278 |
XdB(0x26b2770b), XdB(0x29363e2b), XdB(0x2be3db5c), XdB(0x2ebe06b6), |
a12155461b34
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changeset
|
279 |
XdB(0x31c7a55b), XdB(0x3503ccd4), XdB(0x3875c5aa), XdB(0x3c210f44), |
a12155461b34
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changeset
|
280 |
XdB(0x4009632b), XdB(0x4432b8cf), XdB(0x48a149bc), XdB(0x4d59959e), |
a12155461b34
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changeset
|
281 |
XdB(0x52606733), XdB(0x57bad899), XdB(0x5d6e593a), XdB(0x6380b298), |
a12155461b34
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changeset
|
282 |
XdB(0x69f80e9a), XdB(0x70dafda8), XdB(0x78307d76), XdB(0x7fffffff), |
a12155461b34
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changeset
|
283 |
}; |
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changeset
|
284 |
|
5170
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|
285 |
static void render_line(int n, int x0,int x1,int y0,int y1,ogg_int32_t *d){ |
f7e49eff3708
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diff
changeset
|
286 |
int dy=y1-y0; |
f7e49eff3708
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|
287 |
int adx=x1-x0; |
f7e49eff3708
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|
288 |
int ady=abs(dy); |
f7e49eff3708
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|
289 |
int base=dy/adx; |
f7e49eff3708
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|
290 |
int sy=(dy<0?base-1:base+1); |
f7e49eff3708
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diff
changeset
|
291 |
int x=x0; |
f7e49eff3708
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diff
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|
292 |
int y=y0; |
f7e49eff3708
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diff
changeset
|
293 |
int err=0; |
f7e49eff3708
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diff
changeset
|
294 |
|
f7e49eff3708
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changeset
|
295 |
if(n>x1)n=x1; |
f7e49eff3708
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|
296 |
ady-=abs(base*adx); |
f7e49eff3708
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changeset
|
297 |
|
f7e49eff3708
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|
298 |
if(x<n) |
f7e49eff3708
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diff
changeset
|
299 |
d[x]= MULT31_SHIFT15(d[x],FLOOR_fromdB_LOOKUP[y]); |
f7e49eff3708
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changeset
|
300 |
|
f7e49eff3708
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changeset
|
301 |
while(++x<n){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
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diff
changeset
|
302 |
err=err+ady; |
f7e49eff3708
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diff
changeset
|
303 |
if(err>=adx){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
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diff
changeset
|
304 |
err-=adx; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
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diff
changeset
|
305 |
y+=sy; |
f7e49eff3708
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diff
changeset
|
306 |
}else{ |
f7e49eff3708
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diff
changeset
|
307 |
y+=base; |
f7e49eff3708
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diff
changeset
|
308 |
} |
f7e49eff3708
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diff
changeset
|
309 |
d[x]= MULT31_SHIFT15(d[x],FLOOR_fromdB_LOOKUP[y]); |
f7e49eff3708
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diff
changeset
|
310 |
} |
f7e49eff3708
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changeset
|
311 |
} |
f7e49eff3708
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changeset
|
312 |
|
7849
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|
313 |
static void *floor1_inverse1(vorbis_block *vb,vorbis_look_floor *in){ |
a12155461b34
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|
314 |
vorbis_look_floor1 *look=(vorbis_look_floor1 *)in; |
a12155461b34
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changeset
|
315 |
vorbis_info_floor1 *info=look->vi; |
a12155461b34
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|
316 |
codec_setup_info *ci=(codec_setup_info *)vb->vd->vi->codec_setup; |
5170
f7e49eff3708
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changeset
|
317 |
|
f7e49eff3708
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|
318 |
int i,j,k; |
7849
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|
319 |
codebook *books=ci->fullbooks; |
a12155461b34
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changeset
|
320 |
|
5170
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|
321 |
/* unpack wrapped/predicted values from stream */ |
7849
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|
322 |
if(oggpack_read(&vb->opb,1)==1){ |
a12155461b34
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|
323 |
int *fit_value=(int *)_vorbis_block_alloc(vb,(look->posts)*sizeof(*fit_value)); |
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changeset
|
324 |
|
a12155461b34
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|
325 |
fit_value[0]=oggpack_read(&vb->opb,ilog(look->quant_q-1)); |
a12155461b34
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|
326 |
fit_value[1]=oggpack_read(&vb->opb,ilog(look->quant_q-1)); |
5170
f7e49eff3708
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|
327 |
|
f7e49eff3708
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diff
changeset
|
328 |
/* partition by partition */ |
f7e49eff3708
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diff
changeset
|
329 |
/* partition by partition */ |
f7e49eff3708
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diff
changeset
|
330 |
for(i=0,j=2;i<info->partitions;i++){ |
f7e49eff3708
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diff
changeset
|
331 |
int classv=info->partitionclass[i]; |
7849
a12155461b34
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changeset
|
332 |
int cdim=info->class_dim[classv]; |
a12155461b34
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changeset
|
333 |
int csubbits=info->class_subs[classv]; |
5170
f7e49eff3708
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koda
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diff
changeset
|
334 |
int csub=1<<csubbits; |
f7e49eff3708
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diff
changeset
|
335 |
int cval=0; |
f7e49eff3708
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changeset
|
336 |
|
f7e49eff3708
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changeset
|
337 |
/* decode the partition's first stage cascade value */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
338 |
if(csubbits){ |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
339 |
cval=vorbis_book_decode(books+info->class_book[classv],&vb->opb); |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
340 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
341 |
if(cval==-1)goto eop; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
342 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
343 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
344 |
for(k=0;k<cdim;k++){ |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
345 |
int book=info->class_subbook[classv][cval&(csub-1)]; |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
346 |
cval>>=csubbits; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
347 |
if(book>=0){ |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
348 |
if((fit_value[j+k]=vorbis_book_decode(books+book,&vb->opb))==-1) |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
349 |
goto eop; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
350 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
351 |
fit_value[j+k]=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
352 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
353 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
354 |
j+=cdim; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
355 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
356 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
357 |
/* unwrap positive values and reconsitute via linear interpolation */ |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
358 |
for(i=2;i<look->posts;i++){ |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
359 |
int predicted=render_point(info->postlist[look->loneighbor[i-2]], |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
360 |
info->postlist[look->hineighbor[i-2]], |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
361 |
fit_value[look->loneighbor[i-2]], |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
362 |
fit_value[look->hineighbor[i-2]], |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
363 |
info->postlist[i]); |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
364 |
int hiroom=look->quant_q-predicted; |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
365 |
int loroom=predicted; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
366 |
int room=(hiroom<loroom?hiroom:loroom)<<1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
367 |
int val=fit_value[i]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
368 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
369 |
if(val){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
370 |
if(val>=room){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
371 |
if(hiroom>loroom){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
372 |
val = val-loroom; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
373 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
374 |
val = -1-(val-hiroom); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
375 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
376 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
377 |
if(val&1){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
378 |
val= -((val+1)>>1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
379 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
380 |
val>>=1; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
381 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
382 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
383 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
384 |
fit_value[i]=val+predicted; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
385 |
fit_value[look->loneighbor[i-2]]&=0x7fff; |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
386 |
fit_value[look->hineighbor[i-2]]&=0x7fff; |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
387 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
388 |
}else{ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
389 |
fit_value[i]=predicted|0x8000; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
390 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
391 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
392 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
393 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
394 |
return(fit_value); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
395 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
396 |
eop: |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
397 |
return(NULL); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
398 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
399 |
|
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
400 |
static int floor1_inverse2(vorbis_block *vb,vorbis_look_floor *in,void *memo, |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
401 |
ogg_int32_t *out){ |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
402 |
vorbis_look_floor1 *look=(vorbis_look_floor1 *)in; |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
403 |
vorbis_info_floor1 *info=look->vi; |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
404 |
|
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
405 |
codec_setup_info *ci=(codec_setup_info *)vb->vd->vi->codec_setup; |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
406 |
int n=ci->blocksizes[vb->W]/2; |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
407 |
int j; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
408 |
|
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
409 |
if(memo){ |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
410 |
/* render the lines */ |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
411 |
int *fit_value=(int *)memo; |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
412 |
int hx=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
413 |
int lx=0; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
414 |
int ly=fit_value[0]*info->mult; |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
415 |
for(j=1;j<look->posts;j++){ |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
416 |
int current=look->forward_index[j]; |
5170
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
417 |
int hy=fit_value[current]&0x7fff; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
418 |
if(hy==fit_value[current]){ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
419 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
420 |
hy*=info->mult; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
421 |
hx=info->postlist[current]; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
422 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
423 |
render_line(n,lx,hx,ly,hy,out); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
424 |
|
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
425 |
lx=hx; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
426 |
ly=hy; |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
427 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
428 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
429 |
for(j=hx;j<n;j++)out[j]*=ly; /* be certain */ |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
430 |
return(1); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
431 |
} |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
432 |
memset(out,0,sizeof(*out)*n); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
433 |
return(0); |
f7e49eff3708
add libTremor sources (integer-only libvorbis implementation) to repo and ios project
koda
parents:
diff
changeset
|
434 |
} |
7849
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
435 |
|
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
436 |
/* export hooks */ |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
437 |
vorbis_func_floor floor1_exportbundle={ |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
438 |
&floor1_unpack,&floor1_look,&floor1_free_info, |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
439 |
&floor1_free_look,&floor1_inverse1,&floor1_inverse2 |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
440 |
}; |
a12155461b34
revert r767d3c4153a1 this tremor implementation is buggy
koda
parents:
7697
diff
changeset
|
441 |