block.h 6.72 KB
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/*
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 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
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 *
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 * 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.
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 */

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#ifndef AV1_ENCODER_BLOCK_H_
#define AV1_ENCODER_BLOCK_H_
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#include "av1/common/entropymv.h"
#include "av1/common/entropy.h"
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#if CONFIG_PVQ
#include "av1/encoder/encint.h"
#endif
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#include "av1/common/mvref_common.h"
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#ifdef __cplusplus
extern "C" {
#endif

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#if CONFIG_PVQ
// Maximum possible # of tx blocks in luma plane, which is currently 256,
// since there can be 16x16 of 4x4 tx.
#define MAX_PVQ_BLOCKS_IN_SB (MAX_SB_SQUARE >> 2 * OD_LOG_BSIZE0)
#endif

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typedef struct {
  unsigned int sse;
  int sum;
  unsigned int var;
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} DIFF;
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typedef struct macroblock_plane {
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  DECLARE_ALIGNED(16, int16_t, src_diff[MAX_SB_SQUARE]);
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#if CONFIG_PVQ
  DECLARE_ALIGNED(16, int16_t, src_int16[MAX_SB_SQUARE]);
#endif
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  tran_low_t *qcoeff;
  tran_low_t *coeff;
  uint16_t *eobs;
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#if CONFIG_LV_MAP
  uint8_t *txb_entropy_ctx;
#endif
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  struct buf_2d src;

  // Quantizer setings
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  const int16_t *quant_fp;
  const int16_t *round_fp;
  const int16_t *quant;
  const int16_t *quant_shift;
  const int16_t *zbin;
  const int16_t *round;
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#if CONFIG_NEW_QUANT
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  const cuml_bins_type_nuq *cuml_bins_nuq[QUANT_PROFILES];
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#endif  // CONFIG_NEW_QUANT
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} MACROBLOCK_PLANE;
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/* The [2] dimension is for whether we skip the EOB node (i.e. if previous
 * coefficient in this block was zero) or not. */
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typedef unsigned int av1_coeff_cost[PLANE_TYPES][REF_TYPES][COEF_BANDS][2]
                                   [COEFF_CONTEXTS][ENTROPY_TOKENS];
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typedef struct {
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  int_mv ref_mvs[MODE_CTX_REF_FRAMES][MAX_MV_REF_CANDIDATES];
  int16_t mode_context[MODE_CTX_REF_FRAMES];
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#if CONFIG_LV_MAP
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  // TODO(angiebird): Reduce the buffer size according to sb_type
  tran_low_t tcoeff[MAX_MB_PLANE][MAX_SB_SQUARE];
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  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)];
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#endif
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  uint8_t ref_mv_count[MODE_CTX_REF_FRAMES];
  CANDIDATE_MV ref_mv_stack[MODE_CTX_REF_FRAMES][MAX_REF_MV_STACK_SIZE];
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#if CONFIG_EXT_INTER
  int16_t compound_mode_context[MODE_CTX_REF_FRAMES];
#endif  // CONFIG_EXT_INTER
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} MB_MODE_INFO_EXT;

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

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#if CONFIG_PALETTE
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typedef struct {
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  uint8_t best_palette_color_map[MAX_SB_SQUARE];
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  float kmeans_data_buf[2 * MAX_SB_SQUARE];
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} PALETTE_BUFFER;
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#endif  // CONFIG_PALETTE
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typedef struct macroblock MACROBLOCK;
struct macroblock {
  struct macroblock_plane plane[MAX_MB_PLANE];

  MACROBLOCKD e_mbd;
  MB_MODE_INFO_EXT *mbmi_ext;
  int skip_block;
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  int qindex;
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  // The equivalent error at the current rdmult of one whole bit (not one
  // bitcost unit).
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  int errorperbit;
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  // The equivalend SAD error of one (whole) bit at the current quantizer
  // for large blocks.
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  int sadperbit16;
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  // The equivalend SAD error of one (whole) bit at the current quantizer
  // for sub-8x8 blocks.
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  int sadperbit4;
  int rddiv;
  int rdmult;
  int mb_energy;
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  int *m_search_count_ptr;
  int *ex_search_count_ptr;
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#if CONFIG_VAR_TX
  unsigned int txb_split_count;
#endif

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  // 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;

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  int mv_best_ref_index[TOTAL_REFS_PER_FRAME];
  unsigned int max_mv_context[TOTAL_REFS_PER_FRAME];
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  unsigned int source_variance;
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  unsigned int pred_sse[TOTAL_REFS_PER_FRAME];
  int pred_mv_sad[TOTAL_REFS_PER_FRAME];
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  int *nmvjointcost;
  int nmv_vec_cost[NMV_CONTEXTS][MV_JOINTS];
  int *nmvcost[NMV_CONTEXTS][2];
  int *nmvcost_hp[NMV_CONTEXTS][2];
  int **mv_cost_stack[NMV_CONTEXTS];
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  int **mvcost;
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#if CONFIG_MOTION_VAR
  int32_t *wsrc_buf;
  int32_t *mask_buf;
#endif  // CONFIG_MOTION_VAR
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#if CONFIG_PALETTE
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  PALETTE_BUFFER *palette_buffer;
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#endif  // CONFIG_PALETTE
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  // These define limits to motion vector components to prevent them
  // from extending outside the UMV borders
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  MvLimits mv_limits;
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#if CONFIG_VAR_TX
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  uint8_t blk_skip[MAX_MB_PLANE][MAX_MIB_SIZE * MAX_MIB_SIZE * 8];
  uint8_t blk_skip_drl[MAX_MB_PLANE][MAX_MIB_SIZE * MAX_MIB_SIZE * 8];
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#endif
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  int skip;

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#if CONFIG_CB4X4
  int skip_chroma_rd;
#endif

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  // note that token_costs is the cost when eob node is skipped
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  av1_coeff_cost token_costs[TX_SIZES];
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  int optimize;

  // Used to store sub partition's choices.
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  MV pred_mv[TOTAL_REFS_PER_FRAME];
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  // Store the best motion vector during motion search
  int_mv best_mv;
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  // Store the second best motion vector during full-pixel motion search
  int_mv second_best_mv;
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  // use default transform and skip transform type search for intra modes
  int use_default_intra_tx_type;
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  // use default transform and skip transform type search for inter modes
  int use_default_inter_tx_type;
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#if CONFIG_PVQ
  int rate;
  // 1 if neither AC nor DC is coded. Only used during RDO.
  int pvq_skip[MAX_MB_PLANE];
  PVQ_QUEUE *pvq_q;

  // Storage for PVQ tx block encodings in a superblock.
  // There can be max 16x16 of 4x4 blocks (and YUV) encode by PVQ
  // 256 is the max # of 4x4 blocks in a SB (64x64), which comes from:
  // 1) Since PVQ is applied to each trasnform-ed block
  // 2) 4x4 is the smallest tx size in AV1
  // 3) AV1 allows using smaller tx size than block (i.e. partition) size
  // TODO(yushin) : The memory usage could be improved a lot, since this has
  // storage for 10 bands and 128 coefficients for every 4x4 block,
  PVQ_INFO pvq[MAX_PVQ_BLOCKS_IN_SB][MAX_MB_PLANE];
  daala_enc_ctx daala_enc;
  int pvq_speed;
  int pvq_coded;  // Indicates whether pvq_info needs be stored to tokenize
#endif
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#if CONFIG_DAALA_DIST
  // Keep rate of each 4x4 block in the current macroblock during RDO
  // This is needed when using the 8x8 Daala distortion metric during RDO,
  // because it evaluates distortion in a different order than the underlying
  // 4x4 blocks are coded.
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  int rate_4x4[MAX_SB_SQUARE / (TX_SIZE_W_MIN * TX_SIZE_H_MIN)];
#if CONFIG_CB4X4
  DECLARE_ALIGNED(16, uint8_t, decoded_8x8[8 * 8]);
#endif  // CONFIG_CB4X4
#endif  // CONFIG_DAALA_DIST
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#if CONFIG_CFL
  // Whether luma needs to be stored during RDO.
  int cfl_store_y;
#endif
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};

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

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#endif  // AV1_ENCODER_BLOCK_H_