/*
* 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 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"
#ifdef __cplusplus
extern "C" {
#endif
#define BLOCK_SIZE_GROUPS 4
#define TX_SIZE_CONTEXTS 3
#define INTER_OFFSET(mode) ((mode) - NEARESTMV)
#define INTER_COMPOUND_OFFSET(mode) (uint8_t)((mode) - NEAREST_NEARESTMV)
// Number of possible contexts for a color index.
// 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 'av1_palette_color_index_context_lookup' table.
#define PALETTE_COLOR_INDEX_CONTEXTS 5
// 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 MAX_COLOR_CONTEXT_HASH 8
#define NUM_PALETTE_NEIGHBORS 3 // left, top-left and top.
#define KF_MODE_CONTEXTS 5
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 )];
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 )];
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 )];
aom_cdf_prob coeff_br_cdf[TX_SIZES][PLANE_TYPES][LEVEL_CONTEXTS]
[CDF_SIZE(BR_CDF_SIZE)];
aom_cdf_prob newmv_cdf[NEWMV_MODE_CONTEXTS][CDF_SIZE(2 )];
aom_cdf_prob zeromv_cdf[GLOBALMV_MODE_CONTEXTS][CDF_SIZE(2 )];
aom_cdf_prob refmv_cdf[REFMV_MODE_CONTEXTS][CDF_SIZE(2 )];
aom_cdf_prob drl_cdf[DRL_MODE_CONTEXTS][CDF_SIZE(2 )];
aom_cdf_prob inter_compound_mode_cdf[INTER_MODE_CONTEXTS]
[CDF_SIZE(INTER_COMPOUND_MODES)];
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 )];
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)];
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 )];
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 )];
aom_cdf_prob txfm_partition_cdf[TXFM_PARTITION_CONTEXTS][CDF_SIZE(2 )];
aom_cdf_prob compound_index_cdf[COMP_INDEX_CONTEXTS][CDF_SIZE(2 )];
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 )];
aom_cdf_prob intra_inter_cdf[INTRA_INTER_CONTEXTS][CDF_SIZE(2 )];
nmv_context nmvc;
nmv_context ndvc;
aom_cdf_prob intrabc_cdf[CDF_SIZE(2 )];
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 )];
aom_cdf_prob sgrproj_restore_cdf[CDF_SIZE(2 )];
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)];
aom_cdf_prob partition_cdf[PARTITION_CONTEXTS][CDF_SIZE(EXT_PARTITION_TYPES)];
aom_cdf_prob switchable_interp_cdf[SWITCHABLE_FILTER_CONTEXTS]
[CDF_SIZE(SWITCHABLE_FILTERS)];
/* 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[DIRECTIONAL_MODES]
[CDF_SIZE(2 * MAX_ANGLE_DELTA + 1 )];
aom_cdf_prob tx_size_cdf[MAX_TX_CATS][TX_SIZE_CONTEXTS]
[CDF_SIZE(MAX_TX_DEPTH + 1 )];
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)];
int initialized;
} FRAME_CONTEXT;
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 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);
extern const int
av1_palette_color_index_context_lookup[MAX_COLOR_CONTEXT_HASH + 1 ];
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_COMMON_ENTROPYMODE_H_
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