MrBesen/ffmpeg
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Use 1 array with double the size instead of 2 arrays with normal size

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Eliminates need for concatenation and adds proper fix for FIXME

Originally committed as revision 8958 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ramiro Polla 2007-05-09 22:24:23 +00:00
parent a5cb1f13ba
commit de8e2c1d22
1 changed files with 8 additions and 20 deletions
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28
libavcodec/cook.c
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@ -387,11 +387,9 @@ static void categorize(COOKContext *q, int* quant_index_table,
int exp_index2[102];
int exp_index1[102];
int tmp_categorize_array1[128];
int tmp_categorize_array1_idx=0;
int tmp_categorize_array2[128];
int tmp_categorize_array2_idx=0;
int category_index_size=0;
int tmp_categorize_array[128*2];
int tmp_categorize_array1_idx=q->numvector_size;
int tmp_categorize_array2_idx=q->numvector_size;
bits_left = q->bits_per_subpacket - get_bits_count(&q->gb);
@ -403,8 +401,7 @@ static void categorize(COOKContext *q, int* quant_index_table,
memset(&exp_index1,0,102*sizeof(int));
memset(&exp_index2,0,102*sizeof(int));
memset(&tmp_categorize_array1,0,128*sizeof(int));
memset(&tmp_categorize_array2,0,128*sizeof(int));
memset(&tmp_categorize_array,0,128*2*sizeof(int));
bias=-32;
@ -446,7 +443,7 @@ static void categorize(COOKContext *q, int* quant_index_table,
}
}
if(index==-1)break;
tmp_categorize_array1[tmp_categorize_array1_idx++] = index;
tmp_categorize_array[tmp_categorize_array1_idx++] = index;
tmpbias1 -= expbits_tab[exp_index1[index]] -
expbits_tab[exp_index1[index]+1];
++exp_index1[index];
@ -463,7 +460,7 @@ static void categorize(COOKContext *q, int* quant_index_table,
}
}
if(index == -1)break;
tmp_categorize_array2[tmp_categorize_array2_idx++] = index;
tmp_categorize_array[--tmp_categorize_array2_idx] = index;
tmpbias2 -= expbits_tab[exp_index2[index]] -
expbits_tab[exp_index2[index]-1];
--exp_index2[index];
@ -473,17 +470,8 @@ static void categorize(COOKContext *q, int* quant_index_table,
for(i=0 ; i<q->total_subbands ; i++)
category[i] = exp_index2[i];
/* Concatenate the two arrays. */
for(i=tmp_categorize_array2_idx-1 ; i >= 0; i--)
category_index[category_index_size++] = tmp_categorize_array2[i];
for(i=0;i<tmp_categorize_array1_idx;i++)
category_index[category_index_size++ ] = tmp_categorize_array1[i];
/* FIXME: mc_sich_ra8_20.rm triggers this, not sure with what we
should fill the remaining bytes. */
for(i=category_index_size;i<q->numvector_size;i++)
category_index[i]=0;
for(i=0 ; i<q->numvector_size-1 ; i++)
category_index[i] = tmp_categorize_array[tmp_categorize_array2_idx++];
}