| /* |
| * Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 3-Clause Clear License |
| * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear |
| * License was not distributed with this source code in the LICENSE file, you |
| * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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 |
| * aomedia.org/license/patent-license/. |
| */ |
| |
| #ifndef AOM_AV1_COMMON_ENTROPYMODE_H_ |
| #define AOM_AV1_COMMON_ENTROPYMODE_H_ |
| |
| #include "av1/common/entropy.h" |
| #include "av1/common/entropymv.h" |
| #include "av1/common/filter.h" |
| #include "av1/common/seg_common.h" |
| #include "aom_dsp/aom_filter.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define BLOCK_SIZE_GROUPS 4 |
| |
| #define TX_SIZE_CONTEXTS 3 |
| |
| #define INTER_OFFSET(mode) ((mode)-NEARMV) |
| #define INTER_COMPOUND_OFFSET(mode) (uint8_t)((mode)-NEAR_NEARMV) |
| // Number of possible contexts for a color index. |
| #if CONFIG_NEW_COLOR_MAP_CODING |
| // As can be seen from av1_get_palette_color_index_context(), the possible |
| // contexts are (2,0,0), (2,2,1), (3,2,0), (4,1,0), (5,0,0) pluss one |
| // extra case for the first element of an identity row. These are mapped to |
| // a value from 0 to 5 using 'palette_color_index_context_lookup' table. |
| #define PALETTE_COLOR_INDEX_CONTEXTS 6 |
| #define PALETTE_ROW_FLAG_CONTEXTS 3 |
| #else |
| // As can be seen from av1_get_palette_color_index_context(), the possible |
| // contexts are (2,0,0), (2,2,1), (3,2,0), (4,1,0), (5,0,0). These are mapped to |
| // a value from 0 to 4 using 'palette_color_index_context_lookup' table. |
| #define PALETTE_COLOR_INDEX_CONTEXTS 5 |
| #endif // CONFIG_NEW_COLOR_MAP_CODING |
| |
| // Palette Y mode context for a block is determined by number of neighboring |
| // blocks (top and/or left) using a palette for Y plane. So, possible Y mode' |
| // context values are: |
| // 0 if neither left nor top block uses palette for Y plane, |
| // 1 if exactly one of left or top block uses palette for Y plane, and |
| // 2 if both left and top blocks use palette for Y plane. |
| #define PALETTE_Y_MODE_CONTEXTS 3 |
| |
| // Palette UV mode context for a block is determined by whether this block uses |
| // palette for the Y plane. So, possible values are: |
| // 0 if this block doesn't use palette for Y plane. |
| // 1 if this block uses palette for Y plane (i.e. Y palette size > 0). |
| #define PALETTE_UV_MODE_CONTEXTS 2 |
| |
| // Map the number of pixels in a block size to a context |
| // 64(BLOCK_8X8, BLOCK_4x16, BLOCK_16X4) -> 0 |
| // 128(BLOCK_8X16, BLOCK_16x8) -> 1 |
| // ... |
| // 4096(BLOCK_64X64) -> 6 |
| #define PALATTE_BSIZE_CTXS 7 |
| |
| #define KF_MODE_CONTEXTS 5 |
| |
| #if CONFIG_FORWARDSKIP |
| #define FSC_MODE_CONTEXTS 4 |
| #define FSC_BSIZE_CONTEXTS 5 |
| #endif // CONFIG_FORWARDSKIP |
| |
| #if CONFIG_NEW_REF_SIGNALING |
| #define COMPREF_BIT_TYPES 2 |
| #define RANKED_REF0_TO_PRUNE 3 |
| #define MAX_REFS_ARF 4 |
| #endif // CONFIG_NEW_REF_SIGNALING |
| |
| struct AV1Common; |
| |
| typedef struct { |
| const int16_t *scan; |
| const int16_t *iscan; |
| } SCAN_ORDER; |
| |
| typedef struct frame_contexts { |
| aom_cdf_prob txb_skip_cdf[TX_SIZES][TXB_SKIP_CONTEXTS][CDF_SIZE(2)]; |
| #if CONFIG_CONTEXT_DERIVATION |
| aom_cdf_prob v_txb_skip_cdf[V_TXB_SKIP_CONTEXTS][CDF_SIZE(2)]; |
| #endif // CONFIG_CONTEXT_DERIVATION |
| aom_cdf_prob eob_extra_cdf[TX_SIZES][PLANE_TYPES][EOB_COEF_CONTEXTS] |
| [CDF_SIZE(2)]; |
| aom_cdf_prob dc_sign_cdf[PLANE_TYPES][DC_SIGN_CONTEXTS][CDF_SIZE(2)]; |
| #if CONFIG_CONTEXT_DERIVATION |
| aom_cdf_prob v_dc_sign_cdf[CROSS_COMPONENT_CONTEXTS][DC_SIGN_CONTEXTS] |
| [CDF_SIZE(2)]; |
| aom_cdf_prob v_ac_sign_cdf[CROSS_COMPONENT_CONTEXTS][CDF_SIZE(2)]; |
| #endif // CONFIG_CONTEXT_DERIVATION |
| aom_cdf_prob eob_flag_cdf16[PLANE_TYPES][2][CDF_SIZE(5)]; |
| aom_cdf_prob eob_flag_cdf32[PLANE_TYPES][2][CDF_SIZE(6)]; |
| aom_cdf_prob eob_flag_cdf64[PLANE_TYPES][2][CDF_SIZE(7)]; |
| aom_cdf_prob eob_flag_cdf128[PLANE_TYPES][2][CDF_SIZE(8)]; |
| aom_cdf_prob eob_flag_cdf256[PLANE_TYPES][2][CDF_SIZE(9)]; |
| aom_cdf_prob eob_flag_cdf512[PLANE_TYPES][2][CDF_SIZE(10)]; |
| aom_cdf_prob eob_flag_cdf1024[PLANE_TYPES][2][CDF_SIZE(11)]; |
| aom_cdf_prob coeff_base_eob_cdf[TX_SIZES][PLANE_TYPES][SIG_COEF_CONTEXTS_EOB] |
| [CDF_SIZE(3)]; |
| aom_cdf_prob coeff_base_cdf[TX_SIZES][PLANE_TYPES][SIG_COEF_CONTEXTS] |
| [CDF_SIZE(4)]; |
| #if CONFIG_FORWARDSKIP |
| aom_cdf_prob idtx_sign_cdf[IDTX_SIGN_CONTEXTS][CDF_SIZE(2)]; |
| aom_cdf_prob coeff_base_cdf_idtx[IDTX_SIG_COEF_CONTEXTS][CDF_SIZE(4)]; |
| aom_cdf_prob coeff_br_cdf_idtx[IDTX_LEVEL_CONTEXTS][CDF_SIZE(BR_CDF_SIZE)]; |
| #endif // CONFIG_FORWARDSKIP |
| aom_cdf_prob coeff_br_cdf[TX_SIZES][PLANE_TYPES][LEVEL_CONTEXTS] |
| [CDF_SIZE(BR_CDF_SIZE)]; |
| |
| aom_cdf_prob inter_single_mode_cdf[INTER_SINGLE_MODE_CONTEXTS] |
| [CDF_SIZE(INTER_SINGLE_MODES)]; |
| aom_cdf_prob drl_cdf[3][DRL_MODE_CONTEXTS][CDF_SIZE(2)]; |
| |
| #if CONFIG_OPTFLOW_REFINEMENT |
| aom_cdf_prob use_optflow_cdf[INTER_COMPOUND_MODE_CONTEXTS][CDF_SIZE(2)]; |
| aom_cdf_prob inter_compound_mode_cdf[INTER_COMPOUND_MODE_CONTEXTS] |
| [CDF_SIZE(INTER_COMPOUND_REF_TYPES)]; |
| #else |
| aom_cdf_prob inter_compound_mode_cdf[INTER_COMPOUND_MODE_CONTEXTS] |
| [CDF_SIZE(INTER_COMPOUND_MODES)]; |
| #endif // CONFIG_OPTFLOW_REFINEMENT |
| #if IMPROVED_AMVD |
| aom_cdf_prob adaptive_mvd_cdf[CDF_SIZE(2)]; |
| #endif // IMPROVED_AMVD |
| aom_cdf_prob compound_type_cdf[BLOCK_SIZES_ALL] |
| [CDF_SIZE(MASKED_COMPOUND_TYPES)]; |
| aom_cdf_prob wedge_idx_cdf[BLOCK_SIZES_ALL][CDF_SIZE(16)]; |
| aom_cdf_prob interintra_cdf[BLOCK_SIZE_GROUPS][CDF_SIZE(2)]; |
| aom_cdf_prob wedge_interintra_cdf[BLOCK_SIZES_ALL][CDF_SIZE(2)]; |
| aom_cdf_prob interintra_mode_cdf[BLOCK_SIZE_GROUPS] |
| [CDF_SIZE(INTERINTRA_MODES)]; |
| aom_cdf_prob motion_mode_cdf[BLOCK_SIZES_ALL][CDF_SIZE(MOTION_MODES)]; |
| aom_cdf_prob obmc_cdf[BLOCK_SIZES_ALL][CDF_SIZE(2)]; |
| #if CONFIG_TIP |
| aom_cdf_prob tip_cdf[TIP_CONTEXTS][CDF_SIZE(2)]; |
| #endif // CONFIG_TIP |
| aom_cdf_prob palette_y_size_cdf[PALATTE_BSIZE_CTXS][CDF_SIZE(PALETTE_SIZES)]; |
| aom_cdf_prob palette_uv_size_cdf[PALATTE_BSIZE_CTXS][CDF_SIZE(PALETTE_SIZES)]; |
| #if CONFIG_NEW_COLOR_MAP_CODING |
| aom_cdf_prob identity_row_cdf_y[PALETTE_ROW_FLAG_CONTEXTS][CDF_SIZE(2)]; |
| aom_cdf_prob identity_row_cdf_uv[PALETTE_ROW_FLAG_CONTEXTS][CDF_SIZE(2)]; |
| #endif // CONFIG_NEW_COLOR_MAP_CODING |
| aom_cdf_prob palette_y_color_index_cdf[PALETTE_SIZES] |
| [PALETTE_COLOR_INDEX_CONTEXTS] |
| [CDF_SIZE(PALETTE_COLORS)]; |
| aom_cdf_prob palette_uv_color_index_cdf[PALETTE_SIZES] |
| [PALETTE_COLOR_INDEX_CONTEXTS] |
| [CDF_SIZE(PALETTE_COLORS)]; |
| aom_cdf_prob palette_y_mode_cdf[PALATTE_BSIZE_CTXS][PALETTE_Y_MODE_CONTEXTS] |
| [CDF_SIZE(2)]; |
| aom_cdf_prob palette_uv_mode_cdf[PALETTE_UV_MODE_CONTEXTS][CDF_SIZE(2)]; |
| aom_cdf_prob comp_inter_cdf[COMP_INTER_CONTEXTS][CDF_SIZE(2)]; |
| #if CONFIG_NEW_REF_SIGNALING |
| aom_cdf_prob single_ref_cdf[REF_CONTEXTS][INTER_REFS_PER_FRAME - 1] |
| [CDF_SIZE(2)]; |
| aom_cdf_prob comp_ref0_cdf[REF_CONTEXTS][INTER_REFS_PER_FRAME - 2] |
| [CDF_SIZE(2)]; |
| aom_cdf_prob comp_ref1_cdf[REF_CONTEXTS][COMPREF_BIT_TYPES] |
| [INTER_REFS_PER_FRAME - 2][CDF_SIZE(2)]; |
| #else |
| aom_cdf_prob single_ref_cdf[REF_CONTEXTS][SINGLE_REFS - 1][CDF_SIZE(2)]; |
| aom_cdf_prob comp_ref_type_cdf[COMP_REF_TYPE_CONTEXTS][CDF_SIZE(2)]; |
| aom_cdf_prob uni_comp_ref_cdf[UNI_COMP_REF_CONTEXTS][UNIDIR_COMP_REFS - 1] |
| [CDF_SIZE(2)]; |
| aom_cdf_prob comp_ref_cdf[REF_CONTEXTS][FWD_REFS - 1][CDF_SIZE(2)]; |
| aom_cdf_prob comp_bwdref_cdf[REF_CONTEXTS][BWD_REFS - 1][CDF_SIZE(2)]; |
| #endif // CONFIG_NEW_REF_SIGNALING |
| #if CONFIG_NEW_TX_PARTITION |
| aom_cdf_prob inter_4way_txfm_partition_cdf[2][TXFM_PARTITION_INTER_CONTEXTS] |
| [CDF_SIZE(4)]; |
| aom_cdf_prob inter_2way_txfm_partition_cdf[CDF_SIZE(2)]; |
| aom_cdf_prob inter_2way_rect_txfm_partition_cdf[CDF_SIZE(2)]; |
| #else // CONFIG_NEW_TX_PARTITION |
| aom_cdf_prob txfm_partition_cdf[TXFM_PARTITION_CONTEXTS][CDF_SIZE(2)]; |
| #endif // CONFIG_NEW_TX_PARTITION |
| aom_cdf_prob comp_group_idx_cdf[COMP_GROUP_IDX_CONTEXTS][CDF_SIZE(2)]; |
| aom_cdf_prob skip_mode_cdfs[SKIP_MODE_CONTEXTS][CDF_SIZE(2)]; |
| aom_cdf_prob skip_txfm_cdfs[SKIP_CONTEXTS][CDF_SIZE(2)]; |
| #if CONFIG_CONTEXT_DERIVATION |
| aom_cdf_prob intra_inter_cdf[INTRA_INTER_SKIP_TXFM_CONTEXTS] |
| [INTRA_INTER_CONTEXTS][CDF_SIZE(2)]; |
| #else |
| aom_cdf_prob intra_inter_cdf[INTRA_INTER_CONTEXTS][CDF_SIZE(2)]; |
| #endif // CONFIG_CONTEXT_DERIVATION |
| nmv_context nmvc; |
| nmv_context ndvc; |
| aom_cdf_prob intrabc_cdf[CDF_SIZE(2)]; |
| #if CONFIG_BVP_IMPROVEMENT |
| aom_cdf_prob intrabc_mode_cdf[CDF_SIZE(2)]; |
| aom_cdf_prob intrabc_drl_idx_cdf[MAX_REF_BV_STACK_SIZE - 1][CDF_SIZE(2)]; |
| #endif // CONFIG_BVP_IMPROVEMENT |
| struct segmentation_probs seg; |
| aom_cdf_prob filter_intra_cdfs[BLOCK_SIZES_ALL][CDF_SIZE(2)]; |
| aom_cdf_prob filter_intra_mode_cdf[CDF_SIZE(FILTER_INTRA_MODES)]; |
| aom_cdf_prob switchable_restore_cdf[CDF_SIZE(RESTORE_SWITCHABLE_TYPES)]; |
| aom_cdf_prob wiener_restore_cdf[CDF_SIZE(2)]; |
| #if CONFIG_CCSO_EXT |
| aom_cdf_prob ccso_cdf[3][CDF_SIZE(2)]; |
| #endif |
| aom_cdf_prob sgrproj_restore_cdf[CDF_SIZE(2)]; |
| #if !CONFIG_AIMC |
| aom_cdf_prob y_mode_cdf[BLOCK_SIZE_GROUPS][CDF_SIZE(INTRA_MODES)]; |
| aom_cdf_prob uv_mode_cdf[CFL_ALLOWED_TYPES][INTRA_MODES] |
| [CDF_SIZE(UV_INTRA_MODES)]; |
| #endif // !CONFIG_AIMC |
| aom_cdf_prob mrl_index_cdf[CDF_SIZE(MRL_LINE_NUMBER)]; |
| #if CONFIG_FORWARDSKIP |
| aom_cdf_prob fsc_mode_cdf[FSC_MODE_CONTEXTS][FSC_BSIZE_CONTEXTS] |
| [CDF_SIZE(FSC_MODES)]; |
| #endif // CONFIG_FORWARDSKIP |
| #if CONFIG_AIMC |
| // y mode cdf |
| aom_cdf_prob y_mode_set_cdf[CDF_SIZE(INTRA_MODE_SETS)]; |
| aom_cdf_prob y_mode_idx_cdf_0[Y_MODE_CONTEXTS][CDF_SIZE(FIRST_MODE_COUNT)]; |
| aom_cdf_prob y_mode_idx_cdf_1[Y_MODE_CONTEXTS][CDF_SIZE(SECOND_MODE_COUNT)]; |
| // uv mode cdf |
| aom_cdf_prob uv_mode_cdf[CFL_ALLOWED_TYPES][UV_MODE_CONTEXTS] |
| [CDF_SIZE(UV_INTRA_MODES)]; |
| #endif // CONFIG_AIMC |
| aom_cdf_prob partition_cdf[PARTITION_STRUCTURE_NUM][PARTITION_CONTEXTS] |
| [CDF_SIZE(EXT_PARTITION_TYPES)]; |
| aom_cdf_prob switchable_interp_cdf[SWITCHABLE_FILTER_CONTEXTS] |
| [CDF_SIZE(SWITCHABLE_FILTERS)]; |
| #if !CONFIG_AIMC |
| /* kf_y_cdf is discarded after use, so does not require persistent storage. |
| However, we keep it with the other CDFs in this struct since it needs to |
| be copied to each tile to support parallelism just like the others. |
| */ |
| aom_cdf_prob kf_y_cdf[KF_MODE_CONTEXTS][KF_MODE_CONTEXTS] |
| [CDF_SIZE(INTRA_MODES)]; |
| |
| aom_cdf_prob angle_delta_cdf[PARTITION_STRUCTURE_NUM][DIRECTIONAL_MODES] |
| [CDF_SIZE(2 * MAX_ANGLE_DELTA + 1)]; |
| #endif // !CONFIG_AIMC |
| |
| #if CONFIG_NEW_TX_PARTITION |
| aom_cdf_prob intra_4way_txfm_partition_cdf[2][TX_SIZE_CONTEXTS][CDF_SIZE(4)]; |
| aom_cdf_prob intra_2way_txfm_partition_cdf[CDF_SIZE(2)]; |
| aom_cdf_prob intra_2way_rect_txfm_partition_cdf[CDF_SIZE(2)]; |
| #else |
| aom_cdf_prob tx_size_cdf[MAX_TX_CATS][TX_SIZE_CONTEXTS] |
| [CDF_SIZE(MAX_TX_DEPTH + 1)]; |
| #endif // CONFIG_NEW_TX_PARTITION |
| aom_cdf_prob delta_q_cdf[CDF_SIZE(DELTA_Q_PROBS + 1)]; |
| aom_cdf_prob delta_lf_multi_cdf[FRAME_LF_COUNT][CDF_SIZE(DELTA_LF_PROBS + 1)]; |
| aom_cdf_prob delta_lf_cdf[CDF_SIZE(DELTA_LF_PROBS + 1)]; |
| aom_cdf_prob intra_ext_tx_cdf[EXT_TX_SETS_INTRA][EXT_TX_SIZES][INTRA_MODES] |
| [CDF_SIZE(TX_TYPES)]; |
| aom_cdf_prob inter_ext_tx_cdf[EXT_TX_SETS_INTER][EXT_TX_SIZES] |
| [CDF_SIZE(TX_TYPES)]; |
| aom_cdf_prob cfl_sign_cdf[CDF_SIZE(CFL_JOINT_SIGNS)]; |
| aom_cdf_prob cfl_alpha_cdf[CFL_ALPHA_CONTEXTS][CDF_SIZE(CFL_ALPHABET_SIZE)]; |
| #if CONFIG_IST |
| aom_cdf_prob stx_cdf[TX_SIZES][CDF_SIZE(STX_TYPES)]; |
| #endif |
| int initialized; |
| } FRAME_CONTEXT; |
| |
| #if CONFIG_FORWARDSKIP |
| static const int av1_ext_tx_ind_intra[EXT_TX_SET_TYPES][TX_TYPES] = { |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 0, 2, 3, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 0, 4, 5, 3, 0, 0, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0 }, |
| { 2, 3, 4, 7, 5, 6, 8, 9, 10, 0, 0, 1, 0, 0, 0, 0 }, |
| { 6, 7, 8, 11, 9, 10, 12, 13, 14, 0, 1, 2, 3, 4, 5, 0 }, |
| }; |
| |
| static const int av1_ext_tx_inv_intra[EXT_TX_SET_TYPES][TX_TYPES] = { |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 0, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 0, 10, 11, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 10, 11, 0, 1, 2, 4, 5, 3, 6, 7, 8, 0, 0, 0, 0, 0 }, |
| { 10, 11, 12, 13, 14, 15, 0, 1, 2, 4, 5, 3, 6, 7, 8, 0 }, |
| }; |
| #endif // CONFIG_FORWARDSKIP |
| |
| static const int av1_ext_tx_ind[EXT_TX_SET_TYPES][TX_TYPES] = { |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 1, 3, 4, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 1, 5, 6, 4, 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0 }, |
| { 3, 4, 5, 8, 6, 7, 9, 10, 11, 0, 1, 2, 0, 0, 0, 0 }, |
| { 7, 8, 9, 12, 10, 11, 13, 14, 15, 0, 1, 2, 3, 4, 5, 6 }, |
| }; |
| |
| static const int av1_ext_tx_inv[EXT_TX_SET_TYPES][TX_TYPES] = { |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 9, 0, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 9, 0, 10, 11, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, |
| { 9, 10, 11, 0, 1, 2, 4, 5, 3, 6, 7, 8, 0, 0, 0, 0 }, |
| { 9, 10, 11, 12, 13, 14, 15, 0, 1, 2, 4, 5, 3, 6, 7, 8 }, |
| }; |
| |
| void av1_set_default_ref_deltas(int8_t *ref_deltas); |
| void av1_set_default_mode_deltas(int8_t *mode_deltas); |
| void av1_setup_frame_contexts(struct AV1Common *cm); |
| void av1_setup_past_independence(struct AV1Common *cm); |
| |
| // Returns (int)ceil(log2(n)). |
| // NOTE: This implementation only works for n <= 2^30. |
| static INLINE int av1_ceil_log2(int n) { |
| if (n < 2) return 0; |
| int i = 1, p = 2; |
| while (p < n) { |
| i++; |
| p = p << 1; |
| } |
| return i; |
| } |
| |
| static INLINE int16_t inter_single_mode_ctx(int16_t mode_ctx) { |
| // refmv_ctx values 2 and 4 are mapped to binary 1 while the rest map to 0. |
| // This is intended to capture the case of ref_match_count >= 2 in |
| // setup_ref_mv_list() function in mvref_common.c as a limited binary |
| // context in addition to newmv_ctx and zeromv_ctx. |
| // TODO(debargha, elliottk): Measure how much the limited refmv_ctx |
| // actually helps |
| static const int refmv_ctx_to_isrefmv_ctx[REFMV_MODE_CONTEXTS] = { 0, 0, 1, |
| 0, 1, 0 }; |
| const int16_t newmv_ctx = mode_ctx & NEWMV_CTX_MASK; |
| assert(newmv_ctx < NEWMV_MODE_CONTEXTS); |
| const int16_t zeromv_ctx = (mode_ctx >> GLOBALMV_OFFSET) & GLOBALMV_CTX_MASK; |
| const int16_t refmv_ctx = (mode_ctx >> REFMV_OFFSET) & REFMV_CTX_MASK; |
| const int16_t isrefmv_ctx = refmv_ctx_to_isrefmv_ctx[refmv_ctx]; |
| const int16_t ctx = |
| GLOBALMV_MODE_CONTEXTS * ISREFMV_MODE_CONTEXTS * newmv_ctx + |
| ISREFMV_MODE_CONTEXTS * zeromv_ctx + isrefmv_ctx; |
| assert(ctx < INTER_SINGLE_MODE_CONTEXTS); |
| return ctx; |
| } |
| |
| // Note mode_ctx is the same context used to decode mode information |
| static INLINE int16_t av1_drl_ctx(int16_t mode_ctx) { |
| const int16_t newmv_ctx = mode_ctx & NEWMV_CTX_MASK; |
| assert(newmv_ctx < NEWMV_MODE_CONTEXTS); |
| const int16_t zeromv_ctx = (mode_ctx >> GLOBALMV_OFFSET) & GLOBALMV_CTX_MASK; |
| const int16_t ctx = GLOBALMV_MODE_CONTEXTS * newmv_ctx + zeromv_ctx; |
| assert(ctx < DRL_MODE_CONTEXTS); |
| return ctx; |
| } |
| |
| #if CONFIG_OPTFLOW_REFINEMENT |
| static const int comp_idx_to_opfl_mode[INTER_COMPOUND_REF_TYPES] = { |
| NEAR_NEARMV_OPTFLOW, NEAR_NEWMV_OPTFLOW, NEW_NEARMV_OPTFLOW, -1, |
| NEW_NEWMV_OPTFLOW, |
| #if CONFIG_JOINT_MVD |
| JOINT_NEWMV_OPTFLOW, |
| #endif // CONFIG_JOINT_MVD |
| }; |
| |
| static INLINE int opfl_get_comp_idx(int mode) { |
| switch (mode) { |
| case NEAR_NEARMV: |
| case NEAR_NEARMV_OPTFLOW: return INTER_COMPOUND_OFFSET(NEAR_NEARMV); |
| case NEAR_NEWMV: |
| case NEAR_NEWMV_OPTFLOW: return INTER_COMPOUND_OFFSET(NEAR_NEWMV); |
| case NEW_NEARMV: |
| case NEW_NEARMV_OPTFLOW: return INTER_COMPOUND_OFFSET(NEW_NEARMV); |
| case NEW_NEWMV: |
| case NEW_NEWMV_OPTFLOW: return INTER_COMPOUND_OFFSET(NEW_NEWMV); |
| case GLOBAL_GLOBALMV: return INTER_COMPOUND_OFFSET(GLOBAL_GLOBALMV); |
| #if CONFIG_JOINT_MVD |
| case JOINT_NEWMV: |
| case JOINT_NEWMV_OPTFLOW: return INTER_COMPOUND_OFFSET(JOINT_NEWMV); |
| #endif // CONFIG_JOINT_MVD |
| default: assert(0); return 0; |
| } |
| } |
| #endif // CONFIG_OPTFLOW_REFINEMENT |
| |
| // Returns the context for palette color index at row 'r' and column 'c', |
| // along with the 'color_order' of neighbors and the 'color_idx'. |
| // The 'color_map' is a 2D array with the given 'stride'. |
| int av1_get_palette_color_index_context(const uint8_t *color_map, int stride, |
| int r, int c, int palette_size, |
| uint8_t *color_order, int *color_idx |
| #if CONFIG_NEW_COLOR_MAP_CODING |
| , |
| int row_flag, int prev_row_flag |
| #endif |
| ); |
| // A faster version of av1_get_palette_color_index_context used by the encoder |
| // exploiting the fact that the encoder does not need to maintain a color order. |
| int av1_fast_palette_color_index_context(const uint8_t *color_map, int stride, |
| int r, int c, int *color_idx |
| #if CONFIG_NEW_COLOR_MAP_CODING |
| , |
| int row_flag, int prev_row_flag |
| #endif |
| ); |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AOM_AV1_COMMON_ENTROPYMODE_H_ |
