375 lines
11 KiB
C
375 lines
11 KiB
C
/*
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* Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license and patent
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* grant that can be found in the LICENSE file in the root of the source
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* tree. All contributing project authors may be found in the AUTHORS
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* file in the root of the source tree.
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*/
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#include "type_aliases.h"
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#include "blockd.h"
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#include "onyxd_int.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx_ports/mem.h"
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#define BR_COUNT 8
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#define BOOL_DATA UINT8
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#define OCB_X PREV_COEF_CONTEXTS * ENTROPY_NODES
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DECLARE_ALIGNED(16, UINT16, 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};
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#define EOB_CONTEXT_NODE 0
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#define ZERO_CONTEXT_NODE 1
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#define ONE_CONTEXT_NODE 2
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#define LOW_VAL_CONTEXT_NODE 3
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#define TWO_CONTEXT_NODE 4
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#define THREE_CONTEXT_NODE 5
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#define HIGH_LOW_CONTEXT_NODE 6
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#define CAT_ONE_CONTEXT_NODE 7
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#define CAT_THREEFOUR_CONTEXT_NODE 8
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#define CAT_THREE_CONTEXT_NODE 9
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#define CAT_FIVE_CONTEXT_NODE 10
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/*
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//the definition is put in "onyxd_int.h"
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typedef struct
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{
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INT16 min_val;
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INT16 Length;
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UINT8 Probs[12];
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} TOKENEXTRABITS;
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*/
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DECLARE_ALIGNED(16, static const TOKENEXTRABITS, vp8d_token_extra_bits2[MAX_ENTROPY_TOKENS]) =
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{
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{ 0, -1, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //ZERO_TOKEN
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{ 1, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //ONE_TOKEN
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{ 2, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //TWO_TOKEN
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{ 3, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //THREE_TOKEN
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{ 4, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //FOUR_TOKEN
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{ 5, 0, { 159, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY1
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{ 7, 1, { 145, 165, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY2
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{ 11, 2, { 140, 148, 173, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY3
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{ 19, 3, { 135, 140, 155, 176, 0, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY4
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{ 35, 4, { 130, 134, 141, 157, 180, 0, 0, 0, 0, 0, 0, 0 } }, //DCT_VAL_CATEGORY5
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{ 67, 10, { 129, 130, 133, 140, 153, 177, 196, 230, 243, 254, 254, 0 } }, //DCT_VAL_CATEGORY6
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{ 0, -1, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, // EOB TOKEN
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};
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void vp8_reset_mb_tokens_context(MACROBLOCKD *x)
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{
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ENTROPY_CONTEXT **const A = x->above_context;
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ENTROPY_CONTEXT(* const L)[4] = x->left_context;
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ENTROPY_CONTEXT *a;
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ENTROPY_CONTEXT *l;
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int i;
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for (i = 0; i < 24; i++)
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{
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a = A[ vp8_block2context[i] ] + vp8_block2above[i];
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l = L[ vp8_block2context[i] ] + vp8_block2left[i];
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*a = *l = 0;
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}
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if (x->mbmi.mode != B_PRED && x->mbmi.mode != SPLITMV)
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{
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a = A[Y2CONTEXT] + vp8_block2above[24];
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l = L[Y2CONTEXT] + vp8_block2left[24];
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*a = *l = 0;
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}
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}
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DECLARE_ALIGNED(16, extern const unsigned int, vp8dx_bitreader_norm[256]);
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#define NORMALIZE \
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/*if(range < 0x80)*/ \
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{ \
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shift = vp8dx_bitreader_norm[range]; \
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range <<= shift; \
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value <<= shift; \
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count -= shift; \
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if(count <= 0) \
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{ \
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count += BR_COUNT ; \
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value |= (*bufptr) << (BR_COUNT-count); \
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bufptr = br_ptr_advance(bufptr, 1); \
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} \
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}
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#define DECODE_AND_APPLYSIGN(value_to_sign) \
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split = (range + 1) >> 1; \
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if ( (value >> 8) < split ) \
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{ \
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range = split; \
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v= value_to_sign; \
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} \
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else \
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{ \
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range = range-split; \
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value = value-(split<<8); \
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v = -value_to_sign; \
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} \
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range +=range; \
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value +=value; \
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if (!--count) \
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{ \
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count = BR_COUNT; \
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value |= *bufptr; \
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bufptr = br_ptr_advance(bufptr, 1); \
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}
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#define DECODE_AND_BRANCH_IF_ZERO(probability,branch) \
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{ \
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split = 1 + ((( probability*(range-1) ) )>> 8); \
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if ( (value >> 8) < split ) \
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{ \
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range = split; \
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NORMALIZE \
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goto branch; \
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} \
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value -= (split<<8); \
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range = range - split; \
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NORMALIZE \
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}
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#define DECODE_AND_LOOP_IF_ZERO(probability,branch) \
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{ \
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split = 1 + ((( probability*(range-1) ) ) >> 8); \
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if ( (value >> 8) < split ) \
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{ \
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range = split; \
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NORMALIZE \
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Prob = coef_probs; \
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if(c<15) {\
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++c; \
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Prob += vp8_coef_bands_x[c]; \
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goto branch; \
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} goto BLOCK_FINISHED; /*for malformed input */\
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} \
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value -= (split<<8); \
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range = range - split; \
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NORMALIZE \
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}
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#define DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val) \
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DECODE_AND_APPLYSIGN(val) \
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Prob = coef_probs + (ENTROPY_NODES*2); \
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if(c < 15){\
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qcoeff_ptr [ scan[c] ] = (INT16) v; \
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++c; \
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goto DO_WHILE; }\
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qcoeff_ptr [ scan[15] ] = (INT16) v; \
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goto BLOCK_FINISHED;
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#define DECODE_EXTRABIT_AND_ADJUST_VAL(t,bits_count)\
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split = 1 + (((range-1) * vp8d_token_extra_bits2[t].Probs[bits_count]) >> 8); \
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if(value >= (split<<8))\
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{\
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range = range-split;\
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value = value-(split<<8);\
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val += ((UINT16)1<<bits_count);\
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}\
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else\
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{\
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range = split;\
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}\
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NORMALIZE
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int vp8_decode_mb_tokens(VP8D_COMP *dx, MACROBLOCKD *x)
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{
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ENTROPY_CONTEXT **const A = x->above_context;
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ENTROPY_CONTEXT(* const L)[4] = x->left_context;
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const VP8_COMMON *const oc = & dx->common;
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BOOL_DECODER *bc = x->current_bc;
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ENTROPY_CONTEXT *a;
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ENTROPY_CONTEXT *l;
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int i;
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int eobtotal = 0;
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register int count;
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const BOOL_DATA *bufptr;
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register unsigned int range;
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register unsigned int value;
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const int *scan;
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register unsigned int shift;
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UINT32 split;
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INT16 *qcoeff_ptr;
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const vp8_prob *coef_probs;
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int type;
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int stop;
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INT16 val, bits_count;
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INT16 c;
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INT16 t;
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INT16 v;
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const vp8_prob *Prob;
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//int *scan;
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type = 3;
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i = 0;
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stop = 16;
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if (x->mbmi.mode != B_PRED && x->mbmi.mode != SPLITMV)
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{
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i = 24;
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stop = 24;
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type = 1;
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qcoeff_ptr = &x->qcoeff[24*16];
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scan = vp8_default_zig_zag1d;
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eobtotal -= 16;
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}
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else
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{
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scan = vp8_default_zig_zag1d;
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qcoeff_ptr = &x->qcoeff[0];
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}
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count = bc->count;
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range = bc->range;
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value = bc->value;
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bufptr = bc->read_ptr;
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coef_probs = oc->fc.coef_probs [type] [ 0 ] [0];
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BLOCK_LOOP:
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a = A[ vp8_block2context[i] ] + vp8_block2above[i];
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l = L[ vp8_block2context[i] ] + vp8_block2left[i];
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c = (INT16)(!type);
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VP8_COMBINEENTROPYCONTEXTS(t, *a, *l);
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Prob = coef_probs;
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Prob += t * ENTROPY_NODES;
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DO_WHILE:
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Prob += vp8_coef_bands_x[c];
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DECODE_AND_BRANCH_IF_ZERO(Prob[EOB_CONTEXT_NODE], BLOCK_FINISHED);
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CHECK_0_:
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DECODE_AND_LOOP_IF_ZERO(Prob[ZERO_CONTEXT_NODE], CHECK_0_);
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DECODE_AND_BRANCH_IF_ZERO(Prob[ONE_CONTEXT_NODE], ONE_CONTEXT_NODE_0_);
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DECODE_AND_BRANCH_IF_ZERO(Prob[LOW_VAL_CONTEXT_NODE], LOW_VAL_CONTEXT_NODE_0_);
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DECODE_AND_BRANCH_IF_ZERO(Prob[HIGH_LOW_CONTEXT_NODE], HIGH_LOW_CONTEXT_NODE_0_);
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DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_THREEFOUR_CONTEXT_NODE], CAT_THREEFOUR_CONTEXT_NODE_0_);
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DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_FIVE_CONTEXT_NODE], CAT_FIVE_CONTEXT_NODE_0_);
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val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY6].min_val;
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bits_count = vp8d_token_extra_bits2[DCT_VAL_CATEGORY6].Length;
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do
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{
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY6, bits_count);
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bits_count -- ;
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}
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while (bits_count >= 0);
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
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CAT_FIVE_CONTEXT_NODE_0_:
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val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY5].min_val;
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 4);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 3);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 2);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 1);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY5, 0);
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
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CAT_THREEFOUR_CONTEXT_NODE_0_:
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DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_THREE_CONTEXT_NODE], CAT_THREE_CONTEXT_NODE_0_);
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val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY4].min_val;
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 3);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 2);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 1);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY4, 0);
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
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CAT_THREE_CONTEXT_NODE_0_:
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val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY3].min_val;
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY3, 2);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY3, 1);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY3, 0);
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
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HIGH_LOW_CONTEXT_NODE_0_:
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DECODE_AND_BRANCH_IF_ZERO(Prob[CAT_ONE_CONTEXT_NODE], CAT_ONE_CONTEXT_NODE_0_);
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val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY2].min_val;
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY2, 1);
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY2, 0);
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
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CAT_ONE_CONTEXT_NODE_0_:
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val = vp8d_token_extra_bits2[DCT_VAL_CATEGORY1].min_val;
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DECODE_EXTRABIT_AND_ADJUST_VAL(DCT_VAL_CATEGORY1, 0);
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(val);
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LOW_VAL_CONTEXT_NODE_0_:
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DECODE_AND_BRANCH_IF_ZERO(Prob[TWO_CONTEXT_NODE], TWO_CONTEXT_NODE_0_);
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DECODE_AND_BRANCH_IF_ZERO(Prob[THREE_CONTEXT_NODE], THREE_CONTEXT_NODE_0_);
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(4);
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THREE_CONTEXT_NODE_0_:
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(3);
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TWO_CONTEXT_NODE_0_:
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DECODE_SIGN_WRITE_COEFF_AND_CHECK_EXIT(2);
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ONE_CONTEXT_NODE_0_:
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DECODE_AND_APPLYSIGN(1);
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Prob = coef_probs + ENTROPY_NODES;
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if (c < 15)
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{
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qcoeff_ptr [ scan[c] ] = (INT16) v;
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++c;
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goto DO_WHILE;
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}
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qcoeff_ptr [ scan[15] ] = (INT16) v;
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BLOCK_FINISHED:
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t = ((x->block[i].eob = c) != !type); // any nonzero data?
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eobtotal += x->block[i].eob;
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*a = *l = t;
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qcoeff_ptr += 16;
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i++;
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if (i < stop)
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goto BLOCK_LOOP;
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if (i == 25)
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{
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scan = vp8_default_zig_zag1d;//x->scan_order1d;
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type = 0;
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i = 0;
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stop = 16;
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coef_probs = oc->fc.coef_probs [type] [ 0 ] [0];
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qcoeff_ptr = &x->qcoeff[0];
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goto BLOCK_LOOP;
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}
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if (i == 16)
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{
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type = 2;
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coef_probs = oc->fc.coef_probs [type] [ 0 ] [0];
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stop = 24;
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goto BLOCK_LOOP;
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}
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bc->count = count;
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bc->value = value;
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bc->range = range;
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bc->read_ptr = bufptr;
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return eobtotal;
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}
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