av1/encoder/block.h - avm - Git at Google


            
            /*

            
             * Copyright (c) 2016, Alliance for Open Media. All rights reserved

            
             *

            
             * This source code is subject to the terms of the BSD 2 Clause License and

            
             * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License

            
             * was not distributed with this source code in the LICENSE file, you can

            
             * obtain it at www.aomedia.org/license/software. If the Alliance for Open

            
             * Media Patent License 1.0 was not distributed with this source code in the

            
             * PATENTS file, you can obtain it at www.aomedia.org/license/patent.

            
             */


            #ifndef AV1_ENCODER_BLOCK_H_

            
            #define AV1_ENCODER_BLOCK_H_


            #include "av1/common/entropymv.h"

            
            #include "av1/common/entropy.h"

            
            #include "av1/common/mvref_common.h"

            
            #include "av1/encoder/hash.h"

            
            #if CONFIG_DIST_8X8

            
            #include "aom/aomcx.h"

            
            #endif


            #ifdef __cplusplus

            
            extern "C" {

            
            #endif


            typedef struct {

            
              unsigned int sse;

            
              int sum;

            
              unsigned int var;

            
            } DIFF;


            typedef struct macroblock_plane {

            
              DECLARE_ALIGNED(16, int16_t, src_diff[MAX_SB_SQUARE]);

            
              tran_low_t *qcoeff;

            
              tran_low_t *coeff;

            
              uint16_t *eobs;

            
              uint8_t *txb_entropy_ctx;

            
              struct buf_2d src;


              // Quantizer setings

            
              // These are used/accessed only in the quantization process

            
              // RDO does not / must not depend on any of these values

            
              // All values below share the coefficient scale/shift used in TX

            
              const int16_t *quant_fp_QTX;

            
              const int16_t *round_fp_QTX;

            
              const int16_t *quant_QTX;

            
              const int16_t *quant_shift_QTX;

            
              const int16_t *zbin_QTX;

            
              const int16_t *round_QTX;

            
              const int16_t *dequant_QTX;

            
            } MACROBLOCK_PLANE;


            typedef struct {

            
              int txb_skip_cost[TXB_SKIP_CONTEXTS][2];

            
              int base_eob_cost[SIG_COEF_CONTEXTS_EOB][3];

            
              int base_cost[SIG_COEF_CONTEXTS][4];

            
              int eob_extra_cost[EOB_COEF_CONTEXTS][2];

            
              int dc_sign_cost[DC_SIGN_CONTEXTS][2];

            
              int lps_cost[LEVEL_CONTEXTS][COEFF_BASE_RANGE + 1];

            
            } LV_MAP_COEFF_COST;


            typedef struct {

            
              int eob_cost[2][11];

            
            } LV_MAP_EOB_COST;


            typedef struct {

            
              tran_low_t tcoeff[MAX_MB_PLANE][MAX_SB_SQUARE];

            
              uint16_t eobs[MAX_MB_PLANE][MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];

            
              uint8_t txb_skip_ctx[MAX_MB_PLANE]

            
                                  [MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];

            
              int dc_sign_ctx[MAX_MB_PLANE]

            
                             [MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];

            
            } CB_COEFF_BUFFER;


            typedef struct {

            
              int_mv ref_mvs[MODE_CTX_REF_FRAMES][MAX_MV_REF_CANDIDATES];

            
              int16_t mode_context[MODE_CTX_REF_FRAMES];

            
              // TODO(angiebird): Reduce the buffer size according to sb_type

            
              tran_low_t *tcoeff[MAX_MB_PLANE];

            
              uint16_t *eobs[MAX_MB_PLANE];

            
              uint8_t *txb_skip_ctx[MAX_MB_PLANE];

            
              int *dc_sign_ctx[MAX_MB_PLANE];

            
              uint8_t ref_mv_count[MODE_CTX_REF_FRAMES];

            
              CANDIDATE_MV ref_mv_stack[MODE_CTX_REF_FRAMES][MAX_REF_MV_STACK_SIZE];

            
              int_mv global_mvs[REF_FRAMES];

            
              int16_t compound_mode_context[MODE_CTX_REF_FRAMES];

            
            } MB_MODE_INFO_EXT;


            typedef struct {

            
              int col_min;

            
              int col_max;

            
              int row_min;

            
              int row_max;

            
            } MvLimits;


            typedef struct {

            
              uint8_t best_palette_color_map[MAX_PALETTE_SQUARE];

            
              int kmeans_data_buf[2 * MAX_PALETTE_SQUARE];

            
            } PALETTE_BUFFER;


            typedef struct {

            
              TX_SIZE tx_size;

            
              TX_SIZE inter_tx_size[INTER_TX_SIZE_BUF_LEN];

            
              uint8_t blk_skip[MAX_MIB_SIZE * MAX_MIB_SIZE];

            
              TX_TYPE txk_type[TXK_TYPE_BUF_LEN];

            
              RD_STATS rd_stats;

            
              uint32_t hash_value;

            
            } MB_RD_INFO;


            #define RD_RECORD_BUFFER_LEN 8

            
            typedef struct {

            
              MB_RD_INFO tx_rd_info[RD_RECORD_BUFFER_LEN];  // Circular buffer.

            
              int index_start;

            
              int num;

            
              CRC32C crc_calculator;  // Hash function.

            
            } MB_RD_RECORD;


            typedef struct {

            
              int64_t dist;

            
              int64_t sse;

            
              int rate;

            
              uint16_t eob;

            
              TX_TYPE tx_type;

            
              uint16_t entropy_context;

            
              uint8_t txb_entropy_ctx;

            
              uint8_t valid;

            
              uint8_t fast;  // This is not being used now.

            
            } TXB_RD_INFO;


            #define TX_SIZE_RD_RECORD_BUFFER_LEN 256

            
            typedef struct {

            
              uint32_t hash_vals[TX_SIZE_RD_RECORD_BUFFER_LEN];

            
              TXB_RD_INFO tx_rd_info[TX_SIZE_RD_RECORD_BUFFER_LEN];

            
              int index_start;

            
              int num;

            
            } TXB_RD_RECORD;


            typedef struct tx_size_rd_info_node {

            
              TXB_RD_INFO *rd_info_array;  // Points to array of size TX_TYPES.

            
              struct tx_size_rd_info_node *children[4];

            
            } TXB_RD_INFO_NODE;


            // Region size for mode decision sampling in the first pass of partition

            
            // search(two_pass_partition_search speed feature), in units of mi size(4).

            
            // Used by the mode_pruning_based_on_two_pass_partition_search speed feature.

            
            #define FIRST_PARTITION_PASS_SAMPLE_REGION 8

            
            #define FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2 3

            
            #define FIRST_PARTITION_PASS_STATS_TABLES                     \

            
              (MAX_MIB_SIZE >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2) * \

            
                  (MAX_MIB_SIZE >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2)

            
            #define FIRST_PARTITION_PASS_STATS_STRIDE \

            
              (MAX_MIB_SIZE_LOG2 - FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2)


            static INLINE int av1_first_partition_pass_stats_index(int mi_row, int mi_col) {

            
              const int row =

            
                  (mi_row & MAX_MIB_MASK) >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2;

            
              const int col =

            
                  (mi_col & MAX_MIB_MASK) >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2;

            
              return (row << FIRST_PARTITION_PASS_STATS_STRIDE) + col;

            
            }


            typedef struct {

            
              uint8_t ref0_counts[REF_FRAMES];  // Counters for ref_frame[0].

            
              uint8_t ref1_counts[REF_FRAMES];  // Counters for ref_frame[1].

            
              int sample_counts;                // Number of samples collected.

            
            } FIRST_PARTITION_PASS_STATS;


            #define MAX_INTERP_FILTER_STATS 64

            
            typedef struct {

            
              InterpFilters filters;

            
              MV mv[2];

            
              int8_t ref_frames[2];

            
            } INTERPOLATION_FILTER_STATS;


            typedef struct macroblock MACROBLOCK;

            
            struct macroblock {

            
              struct macroblock_plane plane[MAX_MB_PLANE];


              // Determine if one would go with reduced complexity transform block

            
              // search model to select prediction modes, or full complexity model

            
              // to select transform kernel.

            
              int rd_model;


              // Indicate if the encoder is running in the first pass partition search.

            
              // In that case, apply certain speed features therein to reduce the overhead

            
              // cost in the first pass search.

            
              int cb_partition_scan;


              FIRST_PARTITION_PASS_STATS

            
              first_partition_pass_stats[FIRST_PARTITION_PASS_STATS_TABLES];


              // [comp_idx][saved stat_idx]

            
              INTERPOLATION_FILTER_STATS interp_filter_stats[2][MAX_INTERP_FILTER_STATS];

            
              int interp_filter_stats_idx[2];


              // Activate constrained coding block partition search range.

            
              int use_cb_search_range;


              // Inter macroblock RD search info.

            
              MB_RD_RECORD mb_rd_record;


              // Inter transform block RD search info. for square TX sizes.

            
              TXB_RD_RECORD txb_rd_record_8X8[(MAX_MIB_SIZE >> 1) * (MAX_MIB_SIZE >> 1)];

            
              TXB_RD_RECORD txb_rd_record_16X16[(MAX_MIB_SIZE >> 2) * (MAX_MIB_SIZE >> 2)];

            
              TXB_RD_RECORD txb_rd_record_32X32[(MAX_MIB_SIZE >> 3) * (MAX_MIB_SIZE >> 3)];

            
              TXB_RD_RECORD txb_rd_record_64X64[(MAX_MIB_SIZE >> 4) * (MAX_MIB_SIZE >> 4)];


              // Intra transform block RD search info. for square TX sizes.

            
              TXB_RD_RECORD txb_rd_record_intra;


              MACROBLOCKD e_mbd;

            
              MB_MODE_INFO_EXT *mbmi_ext;

            
              int skip_block;

            
              int qindex;


              // The equivalent error at the current rdmult of one whole bit (not one

            
              // bitcost unit).

            
              int errorperbit;

            
              // The equivalend SAD error of one (whole) bit at the current quantizer

            
              // for large blocks.

            
              int sadperbit16;

            
              // The equivalend SAD error of one (whole) bit at the current quantizer

            
              // for sub-8x8 blocks.

            
              int sadperbit4;

            
              int rdmult;

            
              int mb_energy;

            
              int *m_search_count_ptr;

            
              int *ex_search_count_ptr;


              unsigned int txb_split_count;


              // These are set to their default values at the beginning, and then adjusted

            
              // further in the encoding process.

            
              BLOCK_SIZE min_partition_size;

            
              BLOCK_SIZE max_partition_size;


              int mv_best_ref_index[REF_FRAMES];

            
              unsigned int max_mv_context[REF_FRAMES];

            
              unsigned int source_variance;

            
              unsigned int pred_sse[REF_FRAMES];

            
              int pred_mv_sad[REF_FRAMES];


              int *nmvjointcost;

            
              int nmv_vec_cost[MV_JOINTS];

            
              int *nmvcost[2];

            
              int *nmvcost_hp[2];

            
              int **mv_cost_stack;

            
              int **mvcost;


              int32_t *wsrc_buf;

            
              int32_t *mask_buf;

            
              uint8_t *above_pred_buf;

            
              uint8_t *left_pred_buf;


              PALETTE_BUFFER *palette_buffer;


              // These define limits to motion vector components to prevent them

            
              // from extending outside the UMV borders

            
              MvLimits mv_limits;


              uint8_t blk_skip[MAX_MIB_SIZE * MAX_MIB_SIZE];

            
              uint8_t blk_skip_drl[MAX_MIB_SIZE * MAX_MIB_SIZE];


              int skip;

            
              int skip_chroma_rd;

            
              int skip_cost[SKIP_CONTEXTS][2];


              int skip_mode;  // 0: off; 1: on

            
              int skip_mode_cost[SKIP_CONTEXTS][2];


              int compound_idx;


              LV_MAP_COEFF_COST coeff_costs[TX_SIZES][PLANE_TYPES];

            
              LV_MAP_EOB_COST eob_costs[7][2];

            
              uint16_t cb_offset;


              // mode costs

            
              int intra_inter_cost[INTRA_INTER_CONTEXTS][2];


              int mbmode_cost[BLOCK_SIZE_GROUPS][INTRA_MODES];

            
              int newmv_mode_cost[NEWMV_MODE_CONTEXTS][2];

            
              int zeromv_mode_cost[GLOBALMV_MODE_CONTEXTS][2];

            
              int refmv_mode_cost[REFMV_MODE_CONTEXTS][2];

            
              int drl_mode_cost0[DRL_MODE_CONTEXTS][2];


              int comp_inter_cost[COMP_INTER_CONTEXTS][2];

            
              int single_ref_cost[REF_CONTEXTS][SINGLE_REFS - 1][2];

            
              int comp_ref_type_cost[COMP_REF_TYPE_CONTEXTS]

            
                                    [CDF_SIZE(COMP_REFERENCE_TYPES)];

            
              int uni_comp_ref_cost[UNI_COMP_REF_CONTEXTS][UNIDIR_COMP_REFS - 1]

            
                                   [CDF_SIZE(2)];

            
              // Cost for signaling ref_frame[0] (LAST_FRAME, LAST2_FRAME, LAST3_FRAME or

            
              // GOLDEN_FRAME) in bidir-comp mode.

            
              int comp_ref_cost[REF_CONTEXTS][FWD_REFS - 1][2];

            
              // Cost for signaling ref_frame[1] (ALTREF_FRAME, ALTREF2_FRAME, or

            
              // BWDREF_FRAME) in bidir-comp mode.

            
              int comp_bwdref_cost[REF_CONTEXTS][BWD_REFS - 1][2];

            
              int inter_compound_mode_cost[INTER_MODE_CONTEXTS][INTER_COMPOUND_MODES];

            
              int compound_type_cost[BLOCK_SIZES_ALL][COMPOUND_TYPES - 1];

            
              int wedge_idx_cost[BLOCK_SIZES_ALL][16];

            
              int interintra_cost[BLOCK_SIZE_GROUPS][2];

            
              int wedge_interintra_cost[BLOCK_SIZES_ALL][2];

            
              int interintra_mode_cost[BLOCK_SIZE_GROUPS][INTERINTRA_MODES];

            
              int motion_mode_cost[BLOCK_SIZES_ALL][MOTION_MODES];

            
              int motion_mode_cost1[BLOCK_SIZES_ALL][2];

            
              int intra_uv_mode_cost[CFL_ALLOWED_TYPES][INTRA_MODES][UV_INTRA_MODES];

            
              int y_mode_costs[INTRA_MODES][INTRA_MODES][INTRA_MODES];

            
              int filter_intra_cost[BLOCK_SIZES_ALL][2];

            
              int filter_intra_mode_cost[FILTER_INTRA_MODES];

            
              int switchable_interp_costs[SWITCHABLE_FILTER_CONTEXTS][SWITCHABLE_FILTERS];

            
              int partition_cost[PARTITION_CONTEXTS][EXT_PARTITION_TYPES];

            
              int palette_y_size_cost[PALATTE_BSIZE_CTXS][PALETTE_SIZES];

            
              int palette_uv_size_cost[PALATTE_BSIZE_CTXS][PALETTE_SIZES];

            
              int palette_y_color_cost[PALETTE_SIZES][PALETTE_COLOR_INDEX_CONTEXTS]

            
                                      [PALETTE_COLORS];

            
              int palette_uv_color_cost[PALETTE_SIZES][PALETTE_COLOR_INDEX_CONTEXTS]

            
                                       [PALETTE_COLORS];

            
              int palette_y_mode_cost[PALATTE_BSIZE_CTXS][PALETTE_Y_MODE_CONTEXTS][2];

            
              int palette_uv_mode_cost[PALETTE_UV_MODE_CONTEXTS][2];

            
              // The rate associated with each alpha codeword

            
              int cfl_cost[CFL_JOINT_SIGNS][CFL_PRED_PLANES][CFL_ALPHABET_SIZE];

            
              int tx_size_cost[TX_SIZES - 1][TX_SIZE_CONTEXTS][TX_SIZES];

            
              int txfm_partition_cost[TXFM_PARTITION_CONTEXTS][2];

            
              int inter_tx_type_costs[EXT_TX_SETS_INTER][EXT_TX_SIZES][TX_TYPES];

            
              int intra_tx_type_costs[EXT_TX_SETS_INTRA][EXT_TX_SIZES][INTRA_MODES]

            
                                     [TX_TYPES];

            
              int angle_delta_cost[DIRECTIONAL_MODES][2 * MAX_ANGLE_DELTA + 1];

            
              int switchable_restore_cost[RESTORE_SWITCHABLE_TYPES];

            
              int wiener_restore_cost[2];

            
              int sgrproj_restore_cost[2];

            
              int intrabc_cost[2];


              // Used to store sub partition's choices.

            
              MV pred_mv[REF_FRAMES];


              // Store the best motion vector during motion search

            
              int_mv best_mv;

            
              // Store the second best motion vector during full-pixel motion search

            
              int_mv second_best_mv;


              // use default transform and skip transform type search for intra modes

            
              int use_default_intra_tx_type;

            
              // use default transform and skip transform type search for inter modes

            
              int use_default_inter_tx_type;

            
            #if CONFIG_DIST_8X8

            
              int using_dist_8x8;

            
              aom_tune_metric tune_metric;

            
              DECLARE_ALIGNED(16, int16_t, pred_luma[MAX_SB_SQUARE]);

            
            #endif  // CONFIG_DIST_8X8

            
              int comp_idx_cost[COMP_INDEX_CONTEXTS][2];

            
              int comp_group_idx_cost[COMP_GROUP_IDX_CONTEXTS][2];

            
              // Bit flags for pruning tx type search, tx split, etc.

            
              int tx_search_prune[EXT_TX_SET_TYPES];

            
              int must_find_valid_partition;

            
              int tx_split_prune_flag;  // Flag to skip tx split RD search.

            
            };


            static INLINE int is_rect_tx_allowed_bsize(BLOCK_SIZE bsize) {

            
              static const char LUT[BLOCK_SIZES_ALL] = {

            
                0,  // BLOCK_4X4

            
                1,  // BLOCK_4X8

            
                1,  // BLOCK_8X4

            
                0,  // BLOCK_8X8

            
                1,  // BLOCK_8X16

            
                1,  // BLOCK_16X8

            
                0,  // BLOCK_16X16

            
                1,  // BLOCK_16X32

            
                1,  // BLOCK_32X16

            
                0,  // BLOCK_32X32

            
                1,  // BLOCK_32X64

            
                1,  // BLOCK_64X32

            
                0,  // BLOCK_64X64

            
                0,  // BLOCK_64X128

            
                0,  // BLOCK_128X64

            
                0,  // BLOCK_128X128

            
                1,  // BLOCK_4X16

            
                1,  // BLOCK_16X4

            
                1,  // BLOCK_8X32

            
                1,  // BLOCK_32X8

            
                1,  // BLOCK_16X64

            
                1,  // BLOCK_64X16

            
              };


              return LUT[bsize];

            
            }


            static INLINE int is_rect_tx_allowed(const MACROBLOCKD *xd,

            
                                                 const MB_MODE_INFO *mbmi) {

            
              return is_rect_tx_allowed_bsize(mbmi->sb_type) &&

            
                     !xd->lossless[mbmi->segment_id];

            
            }


            static INLINE int tx_size_to_depth(TX_SIZE tx_size, BLOCK_SIZE bsize) {

            
              TX_SIZE ctx_size = max_txsize_rect_lookup[bsize];

            
              int depth = 0;

            
              while (tx_size != ctx_size) {

            
                depth++;

            
                ctx_size = sub_tx_size_map[ctx_size];

            
                assert(depth <= MAX_TX_DEPTH);

            
              }

            
              return depth;

            
            }


            #ifdef __cplusplus

            
            }  // extern "C"

            
            #endif


            #endif  // AV1_ENCODER_BLOCK_H_
	/*
	* Copyright (c) 2016, Alliance for Open Media. All rights reserved
	*
	* This source code is subject to the terms of the BSD 2 Clause License and
	* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
	* was not distributed with this source code in the LICENSE file, you can
	* obtain it at www.aomedia.org/license/software. If the Alliance for Open
	* Media Patent License 1.0 was not distributed with this source code in the
	* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
	*/

	#ifndef AV1_ENCODER_BLOCK_H_
	#define AV1_ENCODER_BLOCK_H_

	#include "av1/common/entropymv.h"
	#include "av1/common/entropy.h"
	#include "av1/common/mvref_common.h"
	#include "av1/encoder/hash.h"
	#if CONFIG_DIST_8X8
	#include "aom/aomcx.h"
	#endif

	#ifdef __cplusplus
	extern "C" {
	#endif

	typedef struct {
	unsigned int sse;
	int sum;
	unsigned int var;
	} DIFF;

	typedef struct macroblock_plane {
	DECLARE_ALIGNED(16, int16_t, src_diff[MAX_SB_SQUARE]);
	tran_low_t *qcoeff;
	tran_low_t *coeff;
	uint16_t *eobs;
	uint8_t *txb_entropy_ctx;
	struct buf_2d src;

	// Quantizer setings
	// These are used/accessed only in the quantization process
	// RDO does not / must not depend on any of these values
	// All values below share the coefficient scale/shift used in TX
	const int16_t *quant_fp_QTX;
	const int16_t *round_fp_QTX;
	const int16_t *quant_QTX;
	const int16_t *quant_shift_QTX;
	const int16_t *zbin_QTX;
	const int16_t *round_QTX;
	const int16_t *dequant_QTX;
	} MACROBLOCK_PLANE;

	typedef struct {
	int txb_skip_cost[TXB_SKIP_CONTEXTS][2];
	int base_eob_cost[SIG_COEF_CONTEXTS_EOB][3];
	int base_cost[SIG_COEF_CONTEXTS][4];
	int eob_extra_cost[EOB_COEF_CONTEXTS][2];
	int dc_sign_cost[DC_SIGN_CONTEXTS][2];
	int lps_cost[LEVEL_CONTEXTS][COEFF_BASE_RANGE + 1];
	} LV_MAP_COEFF_COST;

	typedef struct {
	int eob_cost[2][11];
	} LV_MAP_EOB_COST;

	typedef struct {
	tran_low_t tcoeff[MAX_MB_PLANE][MAX_SB_SQUARE];
	uint16_t eobs[MAX_MB_PLANE][MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];
	uint8_t txb_skip_ctx[MAX_MB_PLANE]
	[MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];
	int dc_sign_ctx[MAX_MB_PLANE]
	[MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];
	} CB_COEFF_BUFFER;

	typedef struct {
	int_mv ref_mvs[MODE_CTX_REF_FRAMES][MAX_MV_REF_CANDIDATES];
	int16_t mode_context[MODE_CTX_REF_FRAMES];
	// TODO(angiebird): Reduce the buffer size according to sb_type
	tran_low_t *tcoeff[MAX_MB_PLANE];
	uint16_t *eobs[MAX_MB_PLANE];
	uint8_t *txb_skip_ctx[MAX_MB_PLANE];
	int *dc_sign_ctx[MAX_MB_PLANE];
	uint8_t ref_mv_count[MODE_CTX_REF_FRAMES];
	CANDIDATE_MV ref_mv_stack[MODE_CTX_REF_FRAMES][MAX_REF_MV_STACK_SIZE];
	int_mv global_mvs[REF_FRAMES];
	int16_t compound_mode_context[MODE_CTX_REF_FRAMES];
	} MB_MODE_INFO_EXT;

	typedef struct {
	int col_min;
	int col_max;
	int row_min;
	int row_max;
	} MvLimits;

	typedef struct {
	uint8_t best_palette_color_map[MAX_PALETTE_SQUARE];
	int kmeans_data_buf[2 * MAX_PALETTE_SQUARE];
	} PALETTE_BUFFER;

	typedef struct {
	TX_SIZE tx_size;
	TX_SIZE inter_tx_size[INTER_TX_SIZE_BUF_LEN];
	uint8_t blk_skip[MAX_MIB_SIZE * MAX_MIB_SIZE];
	TX_TYPE txk_type[TXK_TYPE_BUF_LEN];
	RD_STATS rd_stats;
	uint32_t hash_value;
	} MB_RD_INFO;

	#define RD_RECORD_BUFFER_LEN 8
	typedef struct {
	MB_RD_INFO tx_rd_info[RD_RECORD_BUFFER_LEN]; // Circular buffer.
	int index_start;
	int num;
	CRC32C crc_calculator; // Hash function.
	} MB_RD_RECORD;

	typedef struct {
	int64_t dist;
	int64_t sse;
	int rate;
	uint16_t eob;
	TX_TYPE tx_type;
	uint16_t entropy_context;
	uint8_t txb_entropy_ctx;
	uint8_t valid;
	uint8_t fast; // This is not being used now.
	} TXB_RD_INFO;

	#define TX_SIZE_RD_RECORD_BUFFER_LEN 256
	typedef struct {
	uint32_t hash_vals[TX_SIZE_RD_RECORD_BUFFER_LEN];
	TXB_RD_INFO tx_rd_info[TX_SIZE_RD_RECORD_BUFFER_LEN];
	int index_start;
	int num;
	} TXB_RD_RECORD;

	typedef struct tx_size_rd_info_node {
	TXB_RD_INFO *rd_info_array; // Points to array of size TX_TYPES.
	struct tx_size_rd_info_node *children[4];
	} TXB_RD_INFO_NODE;

	// Region size for mode decision sampling in the first pass of partition
	// search(two_pass_partition_search speed feature), in units of mi size(4).
	// Used by the mode_pruning_based_on_two_pass_partition_search speed feature.
	#define FIRST_PARTITION_PASS_SAMPLE_REGION 8
	#define FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2 3
	#define FIRST_PARTITION_PASS_STATS_TABLES \
	(MAX_MIB_SIZE >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2) * \
	(MAX_MIB_SIZE >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2)
	#define FIRST_PARTITION_PASS_STATS_STRIDE \
	(MAX_MIB_SIZE_LOG2 - FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2)

	static INLINE int av1_first_partition_pass_stats_index(int mi_row, int mi_col) {
	const int row =
	(mi_row & MAX_MIB_MASK) >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2;
	const int col =
	(mi_col & MAX_MIB_MASK) >> FIRST_PARTITION_PASS_SAMPLE_REGION_LOG2;
	return (row << FIRST_PARTITION_PASS_STATS_STRIDE) + col;
	}

	typedef struct {
	uint8_t ref0_counts[REF_FRAMES]; // Counters for ref_frame[0].
	uint8_t ref1_counts[REF_FRAMES]; // Counters for ref_frame[1].
	int sample_counts; // Number of samples collected.
	} FIRST_PARTITION_PASS_STATS;

	#define MAX_INTERP_FILTER_STATS 64
	typedef struct {
	InterpFilters filters;
	MV mv[2];
	int8_t ref_frames[2];
	} INTERPOLATION_FILTER_STATS;

	typedef struct macroblock MACROBLOCK;
	struct macroblock {
	struct macroblock_plane plane[MAX_MB_PLANE];

	// Determine if one would go with reduced complexity transform block
	// search model to select prediction modes, or full complexity model
	// to select transform kernel.
	int rd_model;

	// Indicate if the encoder is running in the first pass partition search.
	// In that case, apply certain speed features therein to reduce the overhead
	// cost in the first pass search.
	int cb_partition_scan;

	FIRST_PARTITION_PASS_STATS
	first_partition_pass_stats[FIRST_PARTITION_PASS_STATS_TABLES];

	// [comp_idx][saved stat_idx]
	INTERPOLATION_FILTER_STATS interp_filter_stats[2][MAX_INTERP_FILTER_STATS];
	int interp_filter_stats_idx[2];

	// Activate constrained coding block partition search range.
	int use_cb_search_range;

	// Inter macroblock RD search info.
	MB_RD_RECORD mb_rd_record;

	// Inter transform block RD search info. for square TX sizes.
	TXB_RD_RECORD txb_rd_record_8X8[(MAX_MIB_SIZE >> 1) * (MAX_MIB_SIZE >> 1)];
	TXB_RD_RECORD txb_rd_record_16X16[(MAX_MIB_SIZE >> 2) * (MAX_MIB_SIZE >> 2)];
	TXB_RD_RECORD txb_rd_record_32X32[(MAX_MIB_SIZE >> 3) * (MAX_MIB_SIZE >> 3)];
	TXB_RD_RECORD txb_rd_record_64X64[(MAX_MIB_SIZE >> 4) * (MAX_MIB_SIZE >> 4)];

	// Intra transform block RD search info. for square TX sizes.
	TXB_RD_RECORD txb_rd_record_intra;

	MACROBLOCKD e_mbd;
	MB_MODE_INFO_EXT *mbmi_ext;
	int skip_block;
	int qindex;

	// The equivalent error at the current rdmult of one whole bit (not one
	// bitcost unit).
	int errorperbit;
	// The equivalend SAD error of one (whole) bit at the current quantizer
	// for large blocks.
	int sadperbit16;
	// The equivalend SAD error of one (whole) bit at the current quantizer
	// for sub-8x8 blocks.
	int sadperbit4;
	int rdmult;
	int mb_energy;
	int *m_search_count_ptr;
	int *ex_search_count_ptr;

	unsigned int txb_split_count;

	// These are set to their default values at the beginning, and then adjusted
	// further in the encoding process.
	BLOCK_SIZE min_partition_size;
	BLOCK_SIZE max_partition_size;

	int mv_best_ref_index[REF_FRAMES];
	unsigned int max_mv_context[REF_FRAMES];
	unsigned int source_variance;
	unsigned int pred_sse[REF_FRAMES];
	int pred_mv_sad[REF_FRAMES];

	int *nmvjointcost;
	int nmv_vec_cost[MV_JOINTS];
	int *nmvcost[2];
	int *nmvcost_hp[2];
	int **mv_cost_stack;
	int **mvcost;

	int32_t *wsrc_buf;
	int32_t *mask_buf;
	uint8_t *above_pred_buf;
	uint8_t *left_pred_buf;

	PALETTE_BUFFER *palette_buffer;

	// These define limits to motion vector components to prevent them
	// from extending outside the UMV borders
	MvLimits mv_limits;

	uint8_t blk_skip[MAX_MIB_SIZE * MAX_MIB_SIZE];
	uint8_t blk_skip_drl[MAX_MIB_SIZE * MAX_MIB_SIZE];

	int skip;
	int skip_chroma_rd;
	int skip_cost[SKIP_CONTEXTS][2];

	int skip_mode; // 0: off; 1: on
	int skip_mode_cost[SKIP_CONTEXTS][2];

	int compound_idx;

	LV_MAP_COEFF_COST coeff_costs[TX_SIZES][PLANE_TYPES];
	LV_MAP_EOB_COST eob_costs[7][2];
	uint16_t cb_offset;

	// mode costs
	int intra_inter_cost[INTRA_INTER_CONTEXTS][2];

	int mbmode_cost[BLOCK_SIZE_GROUPS][INTRA_MODES];
	int newmv_mode_cost[NEWMV_MODE_CONTEXTS][2];
	int zeromv_mode_cost[GLOBALMV_MODE_CONTEXTS][2];
	int refmv_mode_cost[REFMV_MODE_CONTEXTS][2];
	int drl_mode_cost0[DRL_MODE_CONTEXTS][2];

	int comp_inter_cost[COMP_INTER_CONTEXTS][2];
	int single_ref_cost[REF_CONTEXTS][SINGLE_REFS - 1][2];
	int comp_ref_type_cost[COMP_REF_TYPE_CONTEXTS]
	[CDF_SIZE(COMP_REFERENCE_TYPES)];
	int uni_comp_ref_cost[UNI_COMP_REF_CONTEXTS][UNIDIR_COMP_REFS - 1]
	[CDF_SIZE(2)];
	// Cost for signaling ref_frame[0] (LAST_FRAME, LAST2_FRAME, LAST3_FRAME or
	// GOLDEN_FRAME) in bidir-comp mode.
	int comp_ref_cost[REF_CONTEXTS][FWD_REFS - 1][2];
	// Cost for signaling ref_frame[1] (ALTREF_FRAME, ALTREF2_FRAME, or
	// BWDREF_FRAME) in bidir-comp mode.
	int comp_bwdref_cost[REF_CONTEXTS][BWD_REFS - 1][2];
	int inter_compound_mode_cost[INTER_MODE_CONTEXTS][INTER_COMPOUND_MODES];
	int compound_type_cost[BLOCK_SIZES_ALL][COMPOUND_TYPES - 1];
	int wedge_idx_cost[BLOCK_SIZES_ALL][16];
	int interintra_cost[BLOCK_SIZE_GROUPS][2];
	int wedge_interintra_cost[BLOCK_SIZES_ALL][2];
	int interintra_mode_cost[BLOCK_SIZE_GROUPS][INTERINTRA_MODES];
	int motion_mode_cost[BLOCK_SIZES_ALL][MOTION_MODES];
	int motion_mode_cost1[BLOCK_SIZES_ALL][2];
	int intra_uv_mode_cost[CFL_ALLOWED_TYPES][INTRA_MODES][UV_INTRA_MODES];
	int y_mode_costs[INTRA_MODES][INTRA_MODES][INTRA_MODES];
	int filter_intra_cost[BLOCK_SIZES_ALL][2];
	int filter_intra_mode_cost[FILTER_INTRA_MODES];
	int switchable_interp_costs[SWITCHABLE_FILTER_CONTEXTS][SWITCHABLE_FILTERS];
	int partition_cost[PARTITION_CONTEXTS][EXT_PARTITION_TYPES];
	int palette_y_size_cost[PALATTE_BSIZE_CTXS][PALETTE_SIZES];
	int palette_uv_size_cost[PALATTE_BSIZE_CTXS][PALETTE_SIZES];
	int palette_y_color_cost[PALETTE_SIZES][PALETTE_COLOR_INDEX_CONTEXTS]
	[PALETTE_COLORS];
	int palette_uv_color_cost[PALETTE_SIZES][PALETTE_COLOR_INDEX_CONTEXTS]
	[PALETTE_COLORS];
	int palette_y_mode_cost[PALATTE_BSIZE_CTXS][PALETTE_Y_MODE_CONTEXTS][2];
	int palette_uv_mode_cost[PALETTE_UV_MODE_CONTEXTS][2];
	// The rate associated with each alpha codeword
	int cfl_cost[CFL_JOINT_SIGNS][CFL_PRED_PLANES][CFL_ALPHABET_SIZE];
	int tx_size_cost[TX_SIZES - 1][TX_SIZE_CONTEXTS][TX_SIZES];
	int txfm_partition_cost[TXFM_PARTITION_CONTEXTS][2];
	int inter_tx_type_costs[EXT_TX_SETS_INTER][EXT_TX_SIZES][TX_TYPES];
	int intra_tx_type_costs[EXT_TX_SETS_INTRA][EXT_TX_SIZES][INTRA_MODES]
	[TX_TYPES];
	int angle_delta_cost[DIRECTIONAL_MODES][2 * MAX_ANGLE_DELTA + 1];
	int switchable_restore_cost[RESTORE_SWITCHABLE_TYPES];
	int wiener_restore_cost[2];
	int sgrproj_restore_cost[2];
	int intrabc_cost[2];

	// Used to store sub partition's choices.
	MV pred_mv[REF_FRAMES];

	// Store the best motion vector during motion search
	int_mv best_mv;
	// Store the second best motion vector during full-pixel motion search
	int_mv second_best_mv;

	// use default transform and skip transform type search for intra modes
	int use_default_intra_tx_type;
	// use default transform and skip transform type search for inter modes
	int use_default_inter_tx_type;
	#if CONFIG_DIST_8X8
	int using_dist_8x8;
	aom_tune_metric tune_metric;
	DECLARE_ALIGNED(16, int16_t, pred_luma[MAX_SB_SQUARE]);
	#endif // CONFIG_DIST_8X8
	int comp_idx_cost[COMP_INDEX_CONTEXTS][2];
	int comp_group_idx_cost[COMP_GROUP_IDX_CONTEXTS][2];
	// Bit flags for pruning tx type search, tx split, etc.
	int tx_search_prune[EXT_TX_SET_TYPES];
	int must_find_valid_partition;
	int tx_split_prune_flag; // Flag to skip tx split RD search.
	};

	static INLINE int is_rect_tx_allowed_bsize(BLOCK_SIZE bsize) {
	static const char LUT[BLOCK_SIZES_ALL] = {
	0, // BLOCK_4X4
	1, // BLOCK_4X8
	1, // BLOCK_8X4
	0, // BLOCK_8X8
	1, // BLOCK_8X16
	1, // BLOCK_16X8
	0, // BLOCK_16X16
	1, // BLOCK_16X32
	1, // BLOCK_32X16
	0, // BLOCK_32X32
	1, // BLOCK_32X64
	1, // BLOCK_64X32
	0, // BLOCK_64X64
	0, // BLOCK_64X128
	0, // BLOCK_128X64
	0, // BLOCK_128X128
	1, // BLOCK_4X16
	1, // BLOCK_16X4
	1, // BLOCK_8X32
	1, // BLOCK_32X8
	1, // BLOCK_16X64
	1, // BLOCK_64X16
	};

	return LUT[bsize];
	}

	static INLINE int is_rect_tx_allowed(const MACROBLOCKD *xd,
	const MB_MODE_INFO *mbmi) {
	return is_rect_tx_allowed_bsize(mbmi->sb_type) &&
	!xd->lossless[mbmi->segment_id];
	}

	static INLINE int tx_size_to_depth(TX_SIZE tx_size, BLOCK_SIZE bsize) {
	TX_SIZE ctx_size = max_txsize_rect_lookup[bsize];
	int depth = 0;
	while (tx_size != ctx_size) {
	depth++;
	ctx_size = sub_tx_size_map[ctx_size];
	assert(depth <= MAX_TX_DEPTH);
	}
	return depth;
	}

	#ifdef __cplusplus
	} // extern "C"
	#endif

	#endif // AV1_ENCODER_BLOCK_H_