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vpx/vp8/decoder/arm/detokenizearm_sjl.c
John Koleszar 94c52e4da8 cosmetics: trim trailing whitespace 
When the license headers were updated, they accidentally contained
trailing whitespace, so unfortunately we have to touch all the files
again.

Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
2010-06-18 13:06:11 -04:00

732 lines
21 KiB
C
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/*
* Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "type_aliases.h"
#include "blockd.h"
#include "onyxd_int.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem.h"
#define BR_COUNT 8
#define BOOL_DATA UINT8
#define OCB_X PREV_COEF_CONTEXTS * ENTROPY_NODES
//ALIGN16 UINT16 onyx_coef_bands_x[16] = { 0, 1*OCB_X, 2*OCB_X, 3*OCB_X, 6*OCB_X, 4*OCB_X, 5*OCB_X, 6*OCB_X, 6*OCB_X, 6*OCB_X, 6*OCB_X, 6*OCB_X, 6*OCB_X, 6*OCB_X, 6*OCB_X, 7*OCB_X};
DECLARE_ALIGNED(16, UINT8, vp8_coef_bands_x[16]) = { 0, 1 * OCB_X, 2 * OCB_X, 3 * OCB_X, 6 * OCB_X, 4 * OCB_X, 5 * OCB_X, 6 * OCB_X, 6 * OCB_X, 6 * OCB_X, 6 * OCB_X, 6 * OCB_X, 6 * OCB_X, 6 * OCB_X, 6 * OCB_X, 7 * OCB_X};
#define EOB_CONTEXT_NODE 0
#define ZERO_CONTEXT_NODE 1
#define ONE_CONTEXT_NODE 2
#define LOW_VAL_CONTEXT_NODE 3
#define TWO_CONTEXT_NODE 4
#define THREE_CONTEXT_NODE 5
#define HIGH_LOW_CONTEXT_NODE 6
#define CAT_ONE_CONTEXT_NODE 7
#define CAT_THREEFOUR_CONTEXT_NODE 8
#define CAT_THREE_CONTEXT_NODE 9
#define CAT_FIVE_CONTEXT_NODE 10
DECLARE_ALIGNED(16, static const TOKENEXTRABITS, vp8d_token_extra_bits2[MAX_ENTROPY_TOKENS]) =
{
{ 0, -1, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //ZERO_TOKEN
{ 1, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //ONE_TOKEN
{ 2, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //TWO_TOKEN
{ 3, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //THREE_TOKEN
{ 4, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //FOUR_TOKEN
{ 5, 0, { 159, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY1
{ 7, 1, { 145, 165, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY2
{ 11, 2, { 140, 148, 173, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY3
{ 19, 3, { 135, 140, 155, 176, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY4
{ 35, 4, { 130, 134, 141, 157, 180, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY5
{ 67, 10, { 129, 130, 133, 140, 153, 177, 196, 230, 243, 254, 254, 0 } }, //DCT_VAL_CATEGORY6
{ 0, -1, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, // EOB TOKEN
};
/*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
DECLARE_ALIGNED(16, const UINT8, vp8_block2context_leftabove[25*3]) =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, //end of vp8_block2context
0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 0, 0, 1, 1, 0, 0, 1, 1, 0, //end of vp8_block2left
0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 0, 1, 0, 1, 0, 1, 0 //end of vp8_block2above
};
/*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
void vp8_reset_mb_tokens_context(MACROBLOCKD *x)
{
ENTROPY_CONTEXT **const A = x->above_context;
ENTROPY_CONTEXT(* const L)[4] = x->left_context;
ENTROPY_CONTEXT *a;
ENTROPY_CONTEXT *l;
int i;
for (i = 0; i < 24; i++)
{
a = A[ vp8_block2context[i] ] + vp8_block2above[i];
l = L[ vp8_block2context[i] ] + vp8_block2left[i];
*a = *l = 0;
}
if (x->mbmi.mode != B_PRED && x->mbmi.mode != SPLITMV)
{
a = A[Y2CONTEXT] + vp8_block2above[24];
l = L[Y2CONTEXT] + vp8_block2left[24];
*a = *l = 0;
}
}
#define ONYXBLOCK2CONTEXT_OFFSET 0
#define ONYXBLOCK2LEFT_OFFSET 25
#define ONYXBLOCK2ABOVE_OFFSET 50
DECLARE_ALIGNED(16, const static unsigned char, norm[128]) =
{
0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};
/*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
void init_detokenizer(VP8D_COMP *dx)
{
const VP8_COMMON *const oc = & dx->common;
MACROBLOCKD *x = & dx->mb;
dx->detoken.norm_ptr = (unsigned char *)norm;
dx->detoken.vp8_coef_tree_ptr = (vp8_tree_index *)vp8_coef_tree;
dx->detoken.ptr_onyxblock2context_leftabove = (UINT8 *)vp8_block2context_leftabove;
dx->detoken.ptr_onyx_coef_bands_x = vp8_coef_bands_x;
dx->detoken.scan = (int *)vp8_default_zig_zag1d;
dx->detoken.teb_base_ptr = (TOKENEXTRABITS *)vp8d_token_extra_bits2;
dx->detoken.qcoeff_start_ptr = &x->qcoeff[0];
dx->detoken.coef_probs[0] = (unsigned char *)(oc->fc.coef_probs [0] [ 0 ] [0]);
dx->detoken.coef_probs[1] = (unsigned char *)(oc->fc.coef_probs [1] [ 0 ] [0]);
dx->detoken.coef_probs[2] = (unsigned char *)(oc->fc.coef_probs [2] [ 0 ] [0]);
dx->detoken.coef_probs[3] = (unsigned char *)(oc->fc.coef_probs [3] [ 0 ] [0]);
}
/*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
//shift = norm[range]; \
// shift = norm_ptr[range]; \
#define NORMALIZE \
/*if(range < 0x80)*/ \
{ \
shift = detoken->norm_ptr[range]; \
range <<= shift; \
value <<= shift; \
count -= shift; \
if(count <= 0) \
{ \
count += BR_COUNT ; \
value |= (*bufptr) << (BR_COUNT-count); \
bufptr++; \
} \
}
#if 1
#define DECODE_AND_APPLYSIGN(value_to_sign) \
split = (range + 1) >> 1; \
if ( (value >> 24) < split ) \
{ \
range = split; \
v= value_to_sign; \
} \
else \
{ \
range = range-split; \
value = value-(split<<24); \
v = -value_to_sign; \
} \
range +=range; \
value +=value; \
if (!--count) \
{ \
count = BR_COUNT; \
value |= *bufptr; \
bufptr++; \
}
#define DECODE_AND_BRANCH_IF_ZERO(probability,branch) \
{ \
split = 1 + ((( probability*(range-1) ) )>> 8); \
if ( (value >> 24) < split ) \
{ \
range = split; \
NORMALIZE \
goto branch; \
} \
value -= (split<<24); \
range = range - split; \
NORMALIZE \
}
#define DECODE_AND_LOOP_IF_ZERO(probability,branch) \
{ \
split = 1 + ((( probability*(range-1) ) ) >> 8); \
if ( (value >> 24) < split ) \
{ \
range = split; \
NORMALIZE \
Prob = coef_probs; \
++c; \
Prob += vp8_coef_bands_x[c]; \
goto branch; \
} \
value -= (split<<24); \
range = range - split; \
NORMALIZE \
}
#define DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val) \
DECODE_AND_APPLYSIGN(val) \
Prob = coef_probs + (ENTROPY_NODES*2); \
if(c < 15){\
qcoeff_ptr [ scan[c] ] = (INT16) v; \
++c; \
goto DO_WHILE; }\
qcoeff_ptr [ scan[15] ] = (INT16) v; \
goto BLOCK_FINISHED;
#define DECODE_EXTRABIT_AND_ADJUST_VAL(t,bits_count)\
split = 1 + (((range-1) * vp8d_token_extra_bits2[t].Probs[bits_count]) >> 8); \
if(value >= (split<<24))\
{\
range = range-split;\
value = value-(split<<24);\
val += ((UINT16)1<<bits_count);\
}\
else\
{\
range = split;\
}\
NORMALIZE
#endif
#if 0
int vp8_decode_mb_tokens(VP8D_COMP *dx, MACROBLOCKD *x)
{
ENTROPY_CONTEXT **const A = x->above_context;
ENTROPY_CONTEXT(* const L)[4] = x->left_context;
const VP8_COMMON *const oc = & dx->common;
BOOL_DECODER *bc = x->current_bc;
ENTROPY_CONTEXT *a;
ENTROPY_CONTEXT *l;
int i;
int eobtotal = 0;
register int count;
BOOL_DATA *bufptr;
register unsigned int range;
register unsigned int value;
const int *scan;
register unsigned int shift;
UINT32 split;
INT16 *qcoeff_ptr;
UINT8 *coef_probs;
int type;
int stop;
INT16 val, bits_count;
INT16 c;
INT16 t;
INT16 v;
vp8_prob *Prob;
//int *scan;
type = 3;
i = 0;
stop = 16;
if (x->mbmi.mode != B_PRED && x->mbmi.mode != SPLITMV)
{
i = 24;
stop = 24;
type = 1;
qcoeff_ptr = &x->qcoeff[24*16];
scan = vp8_default_zig_zag1d;
eobtotal -= 16;
}
else
{
scan = vp8_default_zig_zag1d;
qcoeff_ptr = &x->qcoeff[0];
}
count = bc->count;
range = bc->range;
value = bc->value;
bufptr = &bc->buffer[bc->pos];
coef_probs = (unsigned char *)(oc->fc.coef_probs [type] [ 0 ] [0]);
BLOCK_LOOP:
a = A[ vp8_block2context[i] ] + vp8_block2above[i];
l = L[ vp8_block2context[i] ] + vp8_block2left[i];
c = (INT16)(!type);
VP8_COMBINEENTROPYCONTEXTS(t, *a, *l);
Prob = coef_probs;
Prob += t * ENTROPY_NODES;
DO_WHILE:
Prob += vp8_coef_bands_x[c];
DECODE_AND_BRANCH_IF_ZERO(Prob[EOB_CONTEXT_NODE], BLOCK_FINISHED);
CHECK_0_:
DECODE_AND_LOOP_IF_ZERO(Prob[ZERO_CONTEXT_NODE], CHECK_0_);
DECODE_AND_BRANCH_IF_ZERO(Prob[ONE_CONTEXT_NODE], ONE_CONTEXT_NODE_0_);
DECODE_AND_BRANCH_IF_ZERO(Prob[LOW_VAL_CONTEXT_NODE], LOW_VAL_CONTEXT_NODE_0_);
DECODE_AND_BRANCH_IF_ZERO(Prob[HIGH_LOW_CONTEXT_NODE], HIGH_LOW_CONTEXT_NODE_0_);
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_THREEFOUR_CONTEXT_NODE], CAT_THREEFOUR_CONTEXT_NODE_0_);
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_FIVE_CONTEXT_NODE], CAT_FIVE_CONTEXT_NODE_0_);
val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY6].min_val;
bits_count = vp8d_token_extra_bits2[DCT_VAL_CATEGORY6].Length;
do
{
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY6, bits_count);
bits_count -- ;
}
while (bits_count >= 0);
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
CAT_FIVE_CONTEXT_NODE_0_:
val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY5].min_val;
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 4);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 3);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 2);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 0);
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
CAT_THREEFOUR_CONTEXT_NODE_0_:
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_THREE_CONTEXT_NODE], CAT_THREE_CONTEXT_NODE_0_);
val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY4].min_val;
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 3);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 2);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 0);
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
CAT_THREE_CONTEXT_NODE_0_:
val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY3].min_val;
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY3, 2);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY3, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY3, 0);
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
HIGH_LOW_CONTEXT_NODE_0_:
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_ONE_CONTEXT_NODE], CAT_ONE_CONTEXT_NODE_0_);
val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY2].min_val;
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY2, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY2, 0);
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
CAT_ONE_CONTEXT_NODE_0_:
val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY1].min_val;
DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY1, 0);
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
LOW_VAL_CONTEXT_NODE_0_:
DECODE_AND_BRANCH_IF_ZERO(Prob[TWO_CONTEXT_NODE], TWO_CONTEXT_NODE_0_);
DECODE_AND_BRANCH_IF_ZERO(Prob[THREE_CONTEXT_NODE], THREE_CONTEXT_NODE_0_);
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(4);
THREE_CONTEXT_NODE_0_:
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(3);
TWO_CONTEXT_NODE_0_:
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(2);
ONE_CONTEXT_NODE_0_:
DECODE_AND_APPLYSIGN(1);
Prob = coef_probs + ENTROPY_NODES;
if (c < 15)
{
qcoeff_ptr [ scan[c] ] = (INT16) v;
++c;
goto DO_WHILE;
}
qcoeff_ptr [ scan[15] ] = (INT16) v;
BLOCK_FINISHED:
t = ((x->Block[i].eob = c) != !type); // any nonzero data?
eobtotal += x->Block[i].eob;
*a = *l = t;
qcoeff_ptr += 16;
i++;
if (i < stop)
goto BLOCK_LOOP;
if (i == 25)
{
scan = vp8_default_zig_zag1d;//x->scan_order1d;
type = 0;
i = 0;
stop = 16;
coef_probs = (unsigned char *)(oc->fc.coef_probs [type] [ 0 ] [0]);
qcoeff_ptr = &x->qcoeff[0];
goto BLOCK_LOOP;
}
if (i == 16)
{
type = 2;
coef_probs = (unsigned char *)(oc->fc.coef_probs [type] [ 0 ] [0]);
stop = 24;
goto BLOCK_LOOP;
}
bc->count = count;
bc->value = value;
bc->range = range;
bc->pos = bufptr - bc->buffer;
return eobtotal;
}
//#endif
#else
/*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#if 0
//uses relative offsets
const vp8_tree_index vp8_coef_tree_x[ 22] = /* corresponding _CONTEXT_NODEs */
{
-DCT_EOB_TOKEN, 1, /* 0 = EOB */
-ZERO_TOKEN, 1, /* 1 = ZERO */
-ONE_TOKEN, 1, /* 2 = ONE */
2, 5, /* 3 = LOW_VAL */
-TWO_TOKEN, 1, /* 4 = TWO */
-THREE_TOKEN, -FOUR_TOKEN, /* 5 = THREE */
2, 3, /* 6 = HIGH_LOW */
-DCT_VAL_CATEGORY1, -DCT_VAL_CATEGORY2, /* 7 = CAT_ONE */
2, 3, /* 8 = CAT_THREEFOUR */
-DCT_VAL_CATEGORY3, -DCT_VAL_CATEGORY4, /* 9 = CAT_THREE */
-DCT_VAL_CATEGORY5, -DCT_VAL_CATEGORY6 /* 10 = CAT_FIVE */
};
#endif
#define _SCALEDOWN 8 //16 //8
int vp8_decode_mb_tokens_v5(DETOK *detoken, int type);
int vp8_decode_mb_tokens_v5_c(DETOK *detoken, int type)
{
BOOL_DECODER *bc = detoken->current_bc;
ENTROPY_CONTEXT *a;
ENTROPY_CONTEXT *l;
int i;
register int count;
BOOL_DATA *bufptr;
register unsigned int range;
register unsigned int value;
register unsigned int shift;
UINT32 split;
INT16 *qcoeff_ptr;
UINT8 *coef_probs;
// int type;
int stop;
INT16 c;
INT16 t;
INT16 v;
vp8_prob *Prob;
// type = 3;
i = 0;
stop = 16;
qcoeff_ptr = detoken->qcoeff_start_ptr;
// if( detoken->mode != B_PRED && detoken->mode != SPLITMV)
if (type == 1)
{
i += 24;
stop += 8; //24;
// type = 1;
qcoeff_ptr += 24 * 16;
// eobtotal-=16;
}
count = bc->count;
range = bc->range;
value = bc->value;
bufptr = &bc->buffer[bc->pos];
coef_probs = detoken->coef_probs[type]; //(unsigned char *)( oc->fc.coef_probs [type] [ 0 ] [0]);
BLOCK_LOOP:
a = detoken->A[ detoken->ptr_onyxblock2context_leftabove[i] ];
l = detoken->L[ detoken->ptr_onyxblock2context_leftabove[i] ];
c = !type;
a += detoken->ptr_onyxblock2context_leftabove[i + ONYXBLOCK2ABOVE_OFFSET];
l += detoken->ptr_onyxblock2context_leftabove[i + ONYXBLOCK2LEFT_OFFSET];
//#define ONYX_COMBINEENTROPYCONTEXTS( Dest, A, B) \
//Dest = ((A)!=0) + ((B)!=0);
VP8_COMBINEENTROPYCONTEXTS(t, *a, *l);
Prob = coef_probs;
Prob += t * ENTROPY_NODES;
t = 0;
do
{
{
// onyx_tree_index * onyx_coef_tree_ptr = onyx_coef_tree_x;
Prob += detoken->ptr_onyx_coef_bands_x[c];
GET_TOKEN_START:
do
{
split = 1 + (((range - 1) * (Prob[t>>1])) >> 8);
if (value >> 24 >= split)
{
range = range - split;
value = value - (split << 24);
t += 1;
//used to eliminate else branch
split = range;
}
range = split;
t = detoken->vp8_coef_tree_ptr[ t ];
NORMALIZE
}
while (t > 0) ;
}
GET_TOKEN_STOP:
if (t == -DCT_EOB_TOKEN)
{
break;
}
v = -t;
if (v > FOUR_TOKEN)
{
INT16 bits_count;
TOKENEXTRABITS *teb_ptr;
// teb_ptr = &onyxd_token_extra_bits2[t];
// teb_ptr = &onyxd_token_extra_bits2[v];
teb_ptr = &detoken->teb_base_ptr[v];
v = teb_ptr->min_val;
bits_count = teb_ptr->Length;
do
{
split = 1 + (((range - 1) * teb_ptr->Probs[bits_count]) >> _SCALEDOWN);
if ((value >> 24) >= split)
{
range = range - split;
value = value - (split << 24);
v += ((UINT16)1 << bits_count);
//used to eliminate else branch
split = range;
}
range = split;
NORMALIZE
bits_count -- ;
}
while (bits_count >= 0);
}
Prob = coef_probs;
if (t)
{
split = 1 + (((range - 1) * vp8_prob_half) >> 8);
if ((value >> 24) >= split)
{
range = range - split;
value = value - (split << 24);
v = (v ^ -1) + 1; /* negate w/out conditionals */
//used to eliminate else branch
split = range;
}
range = split;
NORMALIZE
Prob += ENTROPY_NODES;
if (t < -ONE_TOKEN)
Prob += ENTROPY_NODES;
t = -2;
}
//if t is zero, we will skip the eob table check
t += 2;
qcoeff_ptr [detoken->scan [c] ] = (INT16) v;
}
while (++c < 16);
if (t != -DCT_EOB_TOKEN)
{
--c;
}
t = ((detoken->eob[i] = c) != !type); // any nonzero data?
// eobtotal += detoken->eob[i];
*a = *l = t;
qcoeff_ptr += 16;
i++;
if (i < stop)
goto BLOCK_LOOP;
if (i == 25)
{
type = 0;
i = 0;
stop = 16;
// coef_probs = (unsigned char *)(oc->fc.coef_probs [type] [ 0 ] [0]);
coef_probs = detoken->coef_probs[type]; //(unsigned char *)( oc->fc.coef_probs [type] [ 0 ] [0]);
qcoeff_ptr = detoken->qcoeff_start_ptr;
goto BLOCK_LOOP;
}
if (i == 16)
{
type = 2;
// coef_probs =(unsigned char *)( oc->fc.coef_probs [type] [ 0 ] [0]);
coef_probs = detoken->coef_probs[type]; //(unsigned char *)( oc->fc.coef_probs [type] [ 0 ] [0]);
stop = 24;
goto BLOCK_LOOP;
}
bc->count = count;
bc->value = value;
bc->range = range;
bc->pos = bufptr - bc->buffer;
return 0;
}
//#if 0
int vp8_decode_mb_tokens(VP8D_COMP *dx, MACROBLOCKD *x)
{
// const ONYX_COMMON * const oc = & dx->common;
int eobtotal = 0;
int i, type;
/*
dx->detoken.norm_ptr = norm;
dx->detoken.onyx_coef_tree_ptr = onyx_coef_tree;
dx->detoken.ptr_onyxblock2context_leftabove = ONYXBLOCK2CONTEXT_LEFTABOVE;
dx->detoken.ptr_onyx_coef_bands_x = onyx_coef_bands_x;
dx->detoken.scan = default_zig_zag1d;
dx->detoken.teb_base_ptr = onyxd_token_extra_bits2;
dx->detoken.qcoeff_start_ptr = &x->qcoeff[0];
dx->detoken.A = x->above_context;
dx->detoken.L = x->left_context;
dx->detoken.coef_probs[0] = (unsigned char *)( oc->fc.coef_probs [0] [ 0 ] [0]);
dx->detoken.coef_probs[1] = (unsigned char *)( oc->fc.coef_probs [1] [ 0 ] [0]);
dx->detoken.coef_probs[2] = (unsigned char *)( oc->fc.coef_probs [2] [ 0 ] [0]);
dx->detoken.coef_probs[3] = (unsigned char *)( oc->fc.coef_probs [3] [ 0 ] [0]);
*/
dx->detoken.current_bc = x->current_bc;
dx->detoken.A = x->above_context;
dx->detoken.L = x->left_context;
type = 3;
if (x->mbmi.mode != B_PRED && x->mbmi.mode != SPLITMV)
{
type = 1;
eobtotal -= 16;
}
vp8_decode_mb_tokens_v5(&dx->detoken, type);
for (i = 0; i < 25; i++)
{
x->Block[i].eob = dx->detoken.eob[i];
eobtotal += dx->detoken.eob[i];
}
return eobtotal;
}
#endif
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