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Commit e65f5987 authored by Daniel Kang's avatar Daniel Kang
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Simplify vp8_decode_mb_tokens_8x8. 

Change-Id: Icac5b18e5c832681cea866679796a1dd4278cfb8
parent 6a92df2f
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vp8/decoder/detokenize.c
View file @ e65f5987
......@@ -22,22 +22,14 @@
#define OCB_X PREV_COEF_CONTEXTS * ENTROPY_NODES
#if CONFIG_EXPANDED_COEF_CONTEXT
DECLARE_ALIGNED(16, static const unsigned short, coef_bands_x[16]) =
#else
DECLARE_ALIGNED(16, static const unsigned char, coef_bands_x[16]) =
#endif
DECLARE_ALIGNED(16, int, coef_bands_x[16]) =
{
0 * OCB_X, 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, 7 * OCB_X, 7 * OCB_X, 7 * OCB_X
};
#if CONFIG_EXPANDED_COEF_CONTEXT
DECLARE_ALIGNED(16, static const unsigned short, coef_bands_x_8x8[64]) =
#else
DECLARE_ALIGNED(64, static const unsigned char, coef_bands_x_8x8[64]) =
#endif
DECLARE_ALIGNED(16, int, coef_bands_x_8x8[64]) =
{
0 * OCB_X, 1 * OCB_X, 2 * OCB_X, 3 * OCB_X, 5 * OCB_X, 4 * OCB_X, 4 * OCB_X, 5 * OCB_X,
5 * OCB_X, 3 * OCB_X, 6 * OCB_X, 3 * OCB_X, 5 * OCB_X, 4 * OCB_X, 6 * OCB_X, 6 * OCB_X,
......@@ -87,7 +79,7 @@ DECLARE_ALIGNED(64, static const unsigned char, coef_bands_x_8x8[64]) =
#define CAT5_PROB4 180
static const unsigned char cat6_prob[14] =
{ 129, 130, 133, 140, 153, 177, 196, 230, 243, 249, 252, 254, 254, 0 };
{ 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0 };
void vp8_reset_mb_tokens_context(MACROBLOCKD *x)
{
......@@ -108,95 +100,6 @@ void vp8_reset_mb_tokens_context(MACROBLOCKD *x)
DECLARE_ALIGNED(16, extern const unsigned char, vp8_norm[256]);
#define FILL \
if(count < 0) \
VP8DX_BOOL_DECODER_FILL(count, value, bufptr, bufend);
#define NORMALIZE \
/*if(range < 0x80)*/ \
{ \
shift = vp8_norm[range]; \
range <<= shift; \
value <<= shift; \
count -= shift; \
}
#define DECODE_AND_APPLYSIGN(value_to_sign) \
split = (range + 1) >> 1; \
bigsplit = (VP8_BD_VALUE)split << (VP8_BD_VALUE_SIZE - 8); \
FILL \
if ( value < bigsplit ) \
{ \
range = split; \
v= value_to_sign; \
} \
else \
{ \
range = range-split; \
value = value-bigsplit; \
v = -value_to_sign; \
} \
range +=range; \
value +=value; \
count--;
#define DECODE_AND_BRANCH_IF_ZERO(probability,branch) \
{ \
split = 1 + ((( probability*(range-1) ) )>> 8); \
bigsplit = (VP8_BD_VALUE)split << (VP8_BD_VALUE_SIZE - 8); \
FILL \
if ( value < bigsplit ) \
{ \
range = split; \
NORMALIZE \
goto branch; \
} \
value -= bigsplit; \
range = range - split; \
NORMALIZE \
}
#define DECODE_AND_LOOP_IF_ZERO_8x8_2(probability,branch) \
{ \
split = 1 + ((( probability*(range-1) ) ) >> 8); \
bigsplit = (VP8_BD_VALUE)split << (VP8_BD_VALUE_SIZE - 8); \
FILL \
if ( value < bigsplit ) \
{ \
range = split; \
NORMALIZE \
Prob = coef_probs; \
if(c<3) {\
++c; \
Prob += coef_bands_x[c]; \
goto branch; \
} goto BLOCK_FINISHED_8x8; /*for malformed input */\
} \
value -= bigsplit; \
range = range - split; \
NORMALIZE \
}
#define DECODE_AND_LOOP_IF_ZERO_8X8(probability,branch) \
{ \
split = 1 + ((( probability*(range-1) ) ) >> 8); \
bigsplit = (VP8_BD_VALUE)split << (VP8_BD_VALUE_SIZE - 8); \
FILL \
if ( value < bigsplit ) \
{ \
range = split; \
NORMALIZE \
Prob = coef_probs; \
if(c<63) {\
++c; \
Prob += coef_bands_x_8x8[c]; \
goto branch; \
} goto BLOCK_FINISHED_8x8; /*for malformed input */\
} \
value -= bigsplit; \
range = range - split; \
NORMALIZE \
}
//#define PREV_CONTEXT_INC(val) (2+((val)>2))
//#define PREV_CONTEXT_INC(val) (vp8_prev_token_class[(val)])
#if CONFIG_EXPANDED_COEF_CONTEXT
......@@ -205,44 +108,6 @@ DECLARE_ALIGNED(16, extern const unsigned char, vp8_norm[256]);
#define PREV_CONTEXT_INC(val) (2)
#endif
#define DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(val) \
DECODE_AND_APPLYSIGN(val) \
Prob = coef_probs + (ENTROPY_NODES*PREV_CONTEXT_INC(val)); \
if(c < 3){\
qcoeff_ptr [ scan[c] ] = (INT16) v; \
++c; \
goto DO_WHILE_8x8; }\
qcoeff_ptr [ scan[3] ] = (INT16) v; \
c++; \
goto BLOCK_FINISHED_8x8;
#define DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(val) \
DECODE_AND_APPLYSIGN(val) \
Prob = coef_probs + (ENTROPY_NODES*PREV_CONTEXT_INC(val)); \
if(c < 63){\
qcoeff_ptr [ scan[c] ] = (INT16) v; \
++c; \
goto DO_WHILE_8x8; }\
qcoeff_ptr [ scan[63] ] = (INT16) v; \
c++; \
goto BLOCK_FINISHED_8x8;
#define DECODE_EXTRABIT_AND_ADJUST_VAL(prob, bits_count)\
split = 1 + (((range-1) * prob) >> 8); \
bigsplit = (VP8_BD_VALUE)split << (VP8_BD_VALUE_SIZE - 8); \
FILL \
if(value >= bigsplit)\
{\
range = range-split;\
value = value-bigsplit;\
val += ((UINT16)1<<bits_count);\
}\
else\
{\
range = split;\
}\
NORMALIZE
#if CONFIG_ADAPTIVE_ENTROPY
int get_token(int v)
......@@ -306,336 +171,6 @@ void static count_tokens_8x8(INT16 *qcoeff_ptr, int block, int type,
}
#endif
int vp8_decode_mb_tokens_8x8(VP8D_COMP *dx, MACROBLOCKD *x)
{
ENTROPY_CONTEXT *A = (ENTROPY_CONTEXT *)x->above_context;
ENTROPY_CONTEXT *L = (ENTROPY_CONTEXT *)x->left_context;
const VP8_COMMON *const oc = & dx->common;
BOOL_DECODER *bc = x->current_bc;
char *eobs = x->eobs;
ENTROPY_CONTEXT *a;
ENTROPY_CONTEXT *l;
int i;
int eobtotal = 0;
register int count;
const BOOL_DATA *bufptr;
const BOOL_DATA *bufend;
register unsigned int range;
VP8_BD_VALUE value;
const int *scan;//
register unsigned int shift;
UINT32 split;
VP8_BD_VALUE bigsplit;
INT16 *qcoeff_ptr;
const vp8_prob *coef_probs;//
int type;
int stop;
INT16 val, bits_count;
INT16 c;
INT16 v;
const vp8_prob *Prob;
int seg_eob;
int segment_id = x->mode_info_context->mbmi.segment_id;
type = 3;
i = 0;
stop = 16;
scan = vp8_default_zig_zag1d_8x8;
qcoeff_ptr = &x->qcoeff[0];
if (x->mode_info_context->mbmi.mode != B_PRED && x->mode_info_context->mbmi.mode != SPLITMV)
{
i = 24;
stop = 24;
type = 1;
qcoeff_ptr += 24*16;
eobtotal -= 4;
scan = vp8_default_zig_zag1d;
}
bufend = bc->user_buffer_end;
bufptr = bc->user_buffer;
value = bc->value;
count = bc->count;
range = bc->range;
coef_probs = oc->fc.coef_probs_8x8 [type] [ 0 ] [0];
BLOCK_LOOP_8x8:
a = A + vp8_block2above_8x8[i];
l = L + vp8_block2left_8x8[i];
c = (INT16)(!type);
// Dest = ((A)!=0) + ((B)!=0);
if(i==24)
{
VP8_COMBINEENTROPYCONTEXTS(v, *a, *l);
if ( segfeature_active( x, segment_id, SEG_LVL_EOB ) )
{
seg_eob = get_segdata( x, segment_id, SEG_LVL_EOB );
}
else
seg_eob = 4;
}
else
{
VP8_COMBINEENTROPYCONTEXTS(v, *a, *l);
if ( segfeature_active( x, segment_id, SEG_LVL_EOB ) )
{
seg_eob = get_segdata( x, segment_id, SEG_LVL_EOB );
}
else
seg_eob = 64;
}
Prob = coef_probs;
Prob += v * ENTROPY_NODES;
DO_WHILE_8x8:
if ( c == seg_eob )
goto BLOCK_FINISHED_8x8;
if(i==24)
Prob += coef_bands_x[c];
else
Prob += coef_bands_x_8x8[c];
DECODE_AND_BRANCH_IF_ZERO(Prob[EOB_CONTEXT_NODE], BLOCK_FINISHED_8x8);
CHECK_0_8x8_:
if (i==24)
{
DECODE_AND_LOOP_IF_ZERO_8x8_2(Prob[ZERO_CONTEXT_NODE], CHECK_0_8x8_);
}
else
{
DECODE_AND_LOOP_IF_ZERO_8X8(Prob[ZERO_CONTEXT_NODE], CHECK_0_8x8_);
}
DECODE_AND_BRANCH_IF_ZERO(Prob[ONE_CONTEXT_NODE], ONE_CONTEXT_NODE_0_8x8_);
DECODE_AND_BRANCH_IF_ZERO(Prob[LOW_VAL_CONTEXT_NODE],
LOW_VAL_CONTEXT_NODE_0_8x8_);
DECODE_AND_BRANCH_IF_ZERO(Prob[HIGH_LOW_CONTEXT_NODE],
HIGH_LOW_CONTEXT_NODE_0_8x8_);
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_THREEFOUR_CONTEXT_NODE],
CAT_THREEFOUR_CONTEXT_NODE_0_8x8_);
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_FIVE_CONTEXT_NODE],
CAT_FIVE_CONTEXT_NODE_0_8x8_);
val = CAT6_MIN_VAL;
bits_count = 12;
do
{
DECODE_EXTRABIT_AND_ADJUST_VAL(cat6_prob[bits_count], bits_count);
bits_count -- ;
}
while (bits_count >= 0);
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(val);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(val);
}
CAT_FIVE_CONTEXT_NODE_0_8x8_:
val = CAT5_MIN_VAL;
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT5_PROB4, 4);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT5_PROB3, 3);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT5_PROB2, 2);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT5_PROB1, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT5_PROB0, 0);
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(val);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(val);
}
CAT_THREEFOUR_CONTEXT_NODE_0_8x8_:
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_THREE_CONTEXT_NODE],
CAT_THREE_CONTEXT_NODE_0_8x8_);
val = CAT4_MIN_VAL;
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT4_PROB3, 3);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT4_PROB2, 2);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT4_PROB1, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT4_PROB0, 0);
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(val);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(val);
}
CAT_THREE_CONTEXT_NODE_0_8x8_:
val = CAT3_MIN_VAL;
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT3_PROB2, 2);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT3_PROB1, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT3_PROB0, 0);
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(val);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(val);
}
HIGH_LOW_CONTEXT_NODE_0_8x8_:
DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_ONE_CONTEXT_NODE],
CAT_ONE_CONTEXT_NODE_0_8x8_);
val = CAT2_MIN_VAL;
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT2_PROB1, 1);
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT2_PROB0, 0);
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(val);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(val);
}
CAT_ONE_CONTEXT_NODE_0_8x8_:
val = CAT1_MIN_VAL;
DECODE_EXTRABIT_AND_ADJUST_VAL(CAT1_PROB0, 0);
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(val);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(val);
}
LOW_VAL_CONTEXT_NODE_0_8x8_:
DECODE_AND_BRANCH_IF_ZERO(Prob[TWO_CONTEXT_NODE],
TWO_CONTEXT_NODE_0_8x8_);
DECODE_AND_BRANCH_IF_ZERO(Prob[THREE_CONTEXT_NODE],
THREE_CONTEXT_NODE_0_8x8_);
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(4);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(4);
}
THREE_CONTEXT_NODE_0_8x8_:
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(3);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(3);
}
TWO_CONTEXT_NODE_0_8x8_:
if(i==24)
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8_2(2);
}
else
{
DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT_8x8(2);
}
ONE_CONTEXT_NODE_0_8x8_:
DECODE_AND_APPLYSIGN(1);
Prob = coef_probs + ENTROPY_NODES;
if (i==24)
{
if (c < 3)//15
{
qcoeff_ptr [ scan[c] ] = (INT16) v;
++c;
goto DO_WHILE_8x8;
}
}
else
{
if (c < 63)
{
qcoeff_ptr [ scan[c] ] = (INT16) v;
++c;
goto DO_WHILE_8x8;
}
}
if(i==24)
qcoeff_ptr [ scan[3] ] = (INT16) v;//15
else
qcoeff_ptr [ scan[63] ] = (INT16) v;
c++;
BLOCK_FINISHED_8x8:
#if CONFIG_ADAPTIVE_ENTROPY
count_tokens_8x8(qcoeff_ptr, i, type, a, l, c, seg_eob, &dx->common.fc);
#endif
*a = *l = ((eobs[i] = c) != !type); // any nonzero data?
if (i!=24)
{
*(a + 1) = *a;
*(l + 1) = *l;
}
eobtotal += c;
qcoeff_ptr += (i==24 ? 16 : 64);
i+=4;
if (i < stop)
goto BLOCK_LOOP_8x8;
if (i > 24)
{
type = 0;
i = 0;
stop = 16;
coef_probs = oc->fc.coef_probs_8x8 [type] [ 0 ] [0];
qcoeff_ptr -= (24*16 + 16);
scan = vp8_default_zig_zag1d_8x8;
goto BLOCK_LOOP_8x8;
}
if (i == 16)
{
type = 2;
coef_probs = oc->fc.coef_probs_8x8 [type] [ 0 ] [0];
stop = 24;
goto BLOCK_LOOP_8x8;
}
FILL
bc->user_buffer = bufptr;
bc->value = value;
bc->count = count;
bc->range = range;
return eobtotal;
}
static int vp8_get_signed(BOOL_DECODER *br, int value_to_sign)
{
......@@ -678,29 +213,33 @@ static int vp8_get_signed(BOOL_DECODER *br, int value_to_sign)
static int vp8_decode_coefs(VP8D_COMP *dx, const MACROBLOCKD *xd,
ENTROPY_CONTEXT *a, ENTROPY_CONTEXT *l, int type,
int seg_eob, INT16 *qcoeff_ptr, int i)
int seg_eob, INT16 *qcoeff_ptr, int i,
const int* const scan, int block_type,
const int* coef_bands)
{
FRAME_CONTEXT* const fc = &dx->common.fc;
BOOL_DECODER *br = xd->current_bc;
int tmp, c = (type == 0);
const vp8_prob *Prob;
const int* const scan = vp8_default_zig_zag1d;
const vp8_prob *coef_probs = fc->coef_probs[type][0][0];
const vp8_prob *coef_probs =
(block_type == TX_4X4) ? fc->coef_probs[type][0][0]
: fc->coef_probs_8x8[type][0][0];
VP8_COMBINEENTROPYCONTEXTS(tmp, *a, *l);
Prob = coef_probs + tmp * ENTROPY_NODES;
while (1) {
int val, bits_count;
int val;
const uint8_t* cat6 = cat6_prob;
if (c == seg_eob) break;
Prob += coef_bands_x[c];
Prob += coef_bands[c];
if (!vp8_read(br, Prob[EOB_CONTEXT_NODE]))
break;
SKIP_START:
if (c == seg_eob) break;
if (!vp8_read(br, Prob[ZERO_CONTEXT_NODE])) {
++c;
Prob = coef_probs + coef_bands_x[c];
Prob = coef_probs + coef_bands[c];
goto SKIP_START;
}
// ONE_CONTEXT_NODE_0_
......@@ -758,34 +297,94 @@ SKIP_START:
ADJUST_COEF(CAT5_PROB0, 0);
WRITE_COEF_CONTINUE(val);
}
val = CAT6_MIN_VAL;
bits_count = 12;
do {
ADJUST_COEF(cat6_prob[bits_count], bits_count);
--bits_count;
} while (bits_count >= 0);
val = 0;
while (*cat6) {
val = (val << 1) | vp8_read(br, *cat6++);
}
val += CAT6_MIN_VAL;
WRITE_COEF_CONTINUE(val);
}
#if CONFIG_ADAPTIVE_ENTROPY
count_tokens(qcoeff_ptr, i, type, a, l, c, seg_eob, fc);
if (block_type == TX_4X4)
count_tokens(qcoeff_ptr, i, type, a, l, c, seg_eob, fc);
else
count_tokens_8x8(qcoeff_ptr, i, type, a, l, c, seg_eob, fc);
#endif
return c;
}
int vp8_decode_mb_tokens_8x8(VP8D_COMP *pbi, MACROBLOCKD *xd)
{
ENTROPY_CONTEXT* const A = (ENTROPY_CONTEXT *)xd->above_context;
ENTROPY_CONTEXT* const L = (ENTROPY_CONTEXT *)xd->left_context;
char* const eobs = xd->eobs;
int c, i, type, eobtotal = 0, seg_eob;
const int segment_id = xd->mode_info_context->mbmi.segment_id;
const int seg_active = segfeature_active(xd, segment_id, SEG_LVL_EOB);
INT16 *qcoeff_ptr = &xd->qcoeff[0];
if (xd->mode_info_context->mbmi.mode != B_PRED &&
xd->mode_info_context->mbmi.mode != SPLITMV)
{
ENTROPY_CONTEXT* const a = A + vp8_block2above_8x8[24];
ENTROPY_CONTEXT* const l = L + vp8_block2left_8x8[24];
const int* const scan = vp8_default_zig_zag1d;
type = PLANE_TYPE_Y2;
if (seg_active)
seg_eob = get_segdata(xd, segment_id, SEG_LVL_EOB);
else
seg_eob = 4;
c = vp8_decode_coefs(pbi, xd, a, l, type, seg_eob, qcoeff_ptr + 24*16,
24, scan, TX_8X8, coef_bands_x);
a[0] = l[0] = ((eobs[24] = c) != !type);
eobtotal += c - 4;
type = PLANE_TYPE_Y_NO_DC;
}
else
type = PLANE_TYPE_Y_WITH_DC;
if (seg_active)
seg_eob = get_segdata(xd, segment_id, SEG_LVL_EOB);
else
seg_eob = 64;
for (i = 0; i < 24; i += 4)
{
ENTROPY_CONTEXT* const a = A + vp8_block2above_8x8[i];
ENTROPY_CONTEXT* const l = L + vp8_block2left_8x8[i];
const int* const scan = vp8_default_zig_zag1d_8x8;
if (i == 16)
type = PLANE_TYPE_UV;
c = vp8_decode_coefs(pbi, xd, a, l, type, seg_eob, qcoeff_ptr,
i, scan, TX_8X8, coef_bands_x_8x8);