/*
* Copyright(c) 2019 Intel Corporation
*
* 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 https://www.aomedia.org/license/software-license. 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 https://www.aomedia.org/license/patent-license.
*/

#ifndef EbModeDecision_h
#define EbModeDecision_h

#include "definitions.h"
#include "utility.h"
#include "pcs.h"
#include "coding_unit.h"
#include "pic_buffer_desc.h"
#include "pic_operators.h"
#include "neighbor_arrays.h"
#include "object.h"

#ifdef __cplusplus
extern "C" {
#endif

/*! \brief Holds the motion samples for warp motion model estimation
 */
typedef struct WarpSampleInfo {
    //! Number of samples.
    uint8_t num;
    //! Sample locations in current frame.
    int pts[SAMPLES_ARRAY_SIZE];
    //! Sample location in the reference frame.
    int pts_inref[SAMPLES_ARRAY_SIZE];
} WarpSampleInfo;
// Create incomplete struct definition for the following function pointer typedefs
struct ModeDecisionContext;
struct PC_TREE;

/**************************************
    * Mode Decision Candidate
    **************************************/
typedef struct ModeDecisionCandidate {
    BlockModeInfo      block_mi;
    Mv                 pred_mv[2]; // unipred MV stored in idx 0
    PaletteInfo*       palette_info;
    WarpedMotionParams wm_params_l0;
    WarpedMotionParams wm_params_l1;
    TxType             transform_type[MAX_TXB_COUNT];
    TxType             transform_type_uv;
    uint8_t            palette_size[PLANE_TYPES];

    CandClass cand_class;
    bool      skip_mode_allowed;
    uint8_t   drl_index;
} ModeDecisionCandidate;

/**************************************
    * Mode Decision Candidate Buffer
    **************************************/
typedef struct ModeDecisionCandidateBuffer {
    EbDctor dctor;
    // Candidate Ptr
    ModeDecisionCandidate* cand;

    // Video Buffers
    EbPictureBufferDesc* pred;
    EbPictureBufferDesc* rec_coeff;
    EbPictureBufferDesc* residual;
    EbPictureBufferDesc* quant;

    // *Note - We should be able to combine the rec_coeff & recon_ptr pictures (they aren't needed at the same time)
    EbPictureBufferDesc* recon;

    // Costs
    uint64_t*   fast_cost;
    uint64_t*   full_cost;
    uint64_t*   full_cost_ssim;
    uint64_t    fast_luma_rate;
    uint64_t    fast_chroma_rate;
    uint64_t    total_rate;
    uint64_t    luma_fast_dist;
    uint64_t    full_dist;
    uint16_t    cnt_nz_coeff;
    QuantDcData quant_dc;
    EobData     eob;
    uint8_t     block_has_coeff;
    uint8_t     u_has_coeff;
    uint8_t     v_has_coeff;
    uint16_t    y_has_coeff;
    // The prediction of SIMPLE_TRANSLATION is not valid when OBMC face-off is used (where OBMC will re-use the pred buffer of SIMPLE_TRANSLATION)
    bool valid_luma_pred;
} ModeDecisionCandidateBuffer;

/**************************************
 * Function Ptrs Definitions
 **************************************/
typedef EbErrorType (*EbPredictionFunc)(uint8_t hbd_md, struct ModeDecisionContext* ctx, PictureControlSet* pcs,
                                        ModeDecisionCandidateBuffer* cand_bf);
typedef uint64_t (*EbFastCostFunc)(PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                   ModeDecisionCandidateBuffer* cand_bf, uint64_t lambda, uint64_t luma_distortion);
typedef EbErrorType (*EbAv1FullCostFunc)(PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                         ModeDecisionCandidateBuffer* cand_bf, BlkStruct* blk_ptr,
                                         uint64_t y_distortion[DIST_TOTAL][DIST_CALC_TOTAL],
                                         uint64_t cb_distortion[DIST_TOTAL][DIST_CALC_TOTAL],
                                         uint64_t cr_distortion[DIST_TOTAL][DIST_CALC_TOTAL], uint64_t lambda,
                                         uint64_t* y_coeff_bits, uint64_t* cb_coeff_bits, uint64_t* cr_coeff_bits,
                                         BlockSize bsize);

/**************************************
    * Extern Function Declarations
    **************************************/
EbErrorType svt_aom_mode_decision_cand_bf_ctor(ModeDecisionCandidateBuffer* buffer_ptr, EbPictureBufferDesc* pred,
                                               EbPictureBufferDesc* rec_coeff, EbPictureBufferDesc* quant,
                                               EbPictureBufferDesc* temp_residual, EbPictureBufferDesc* temp_recon_ptr,
                                               uint64_t* fast_cost, uint64_t* full_cost, uint64_t* full_cost_ssim_ptr);

EbErrorType svt_aom_mode_decision_scratch_cand_bf_ctor(ModeDecisionCandidateBuffer* buffer_ptr, uint8_t sb_size,
                                                       EbBitDepth max_bitdepth);

uint32_t product_full_mode_decision_pd0(struct ModeDecisionContext* ctx, BlkStruct* blk_ptr,
                                        ModeDecisionCandidateBuffer** buffer_ptr_array);

void        svt_aom_product_full_mode_decision_light_pd1(PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                                         ModeDecisionCandidateBuffer* cand_bf);
uint32_t    svt_aom_product_full_mode_decision(PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                               ModeDecisionCandidateBuffer** buffer_ptr_array,
                                               uint32_t candidate_total_count, uint32_t* best_candidate_index_array);
uint8_t     svt_aom_wm_motion_refinement(PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                         ModeDecisionCandidate* cand, const bool shut_approx);
uint8_t     svt_aom_obmc_motion_refinement(PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                           ModeDecisionCandidate* cand, int refine_level);
EbErrorType generate_md_stage_0_cand(PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                     const struct PC_TREE* const pc_tree, uint32_t* fast_candidate_total_count);
void        generate_md_stage_0_cand_light_pd1(struct ModeDecisionContext* ctx, uint32_t* fast_candidate_total_count,
                                               PictureControlSet* pcs);
EbErrorType generate_md_stage_0_cand_pd0(struct ModeDecisionContext* ctx, uint32_t* fast_candidate_total_count,
                                         PictureControlSet* pcs);

static INLINE int svt_aom_is_interintra_allowed_bsize(const BlockSize bsize) {
    return (bsize >= BLOCK_8X8) && (bsize <= BLOCK_32X32);
}

static INLINE int svt_aom_is_interintra_allowed_mode(const PredictionMode mode) {
    return (mode >= SINGLE_INTER_MODE_START) && (mode < SINGLE_INTER_MODE_END);
}

static INLINE int svt_aom_is_interintra_allowed_ref(const MvReferenceFrame rf[2]) {
    return (rf[0] > INTRA_FRAME) && (rf[1] <= INTRA_FRAME);
}

int  svt_is_interintra_allowed(uint8_t enable_inter_intra, BlockSize bsize, PredictionMode mode,
                               const MvReferenceFrame ref_frame[2]);
int  svt_aom_filter_intra_allowed_bsize(BlockSize bs);
int  svt_aom_filter_intra_allowed(uint8_t enable_filter_intra, BlockSize bsize, uint8_t palette_size, uint32_t mode);
void svt_aom_choose_best_av1_mv_pred(struct ModeDecisionContext* ctx, MvReferenceFrame ref_frame,
                                     PredictionMode mode, // NEW or NEW_NEW
                                     Mv mv0, Mv mv1,
                                     uint8_t* bestDrlIndex, // output
                                     Mv       best_pred_mv[2] // output
);
static const uint32_t me_idx_85[] = {
    0,  1,  5,  21, 22, 29, 30, 6,  23, 24, 31, 32, 9,  37, 38, 45, 46, 10, 39, 40, 47, 48, 2,  7,  25, 26, 33, 34, 8,
    27, 28, 35, 36, 11, 41, 42, 49, 50, 12, 43, 44, 51, 52, 3,  13, 53, 54, 61, 62, 14, 55, 56, 63, 64, 17, 69, 70, 77,
    78, 18, 71, 72, 79, 80, 4,  15, 57, 58, 65, 66, 16, 59, 60, 67, 68, 19, 73, 74, 81, 82, 20, 75, 76, 83, 84};
uint32_t svt_aom_get_me_block_offset(const uint32_t org_x, const uint32_t org_y, const BlockSize bsize,
                                     const uint8_t enable_me_8x8, const uint8_t enable_me_16x16);
uint8_t  svt_aom_is_me_data_present(uint32_t me_block_offset, uint32_t me_cand_offset, const MeSbResults* me_results,
                                    uint8_t list_idx, uint8_t ref_idx);

int32_t    svt_aom_have_newmv_in_inter_mode(PredictionMode mode);
uint8_t    svt_aom_get_max_drl_index(uint8_t refmvCnt, PredictionMode mode);
MotionMode svt_aom_obmc_motion_mode_allowed(const PictureControlSet* pcs, struct ModeDecisionContext* ctx,
                                            const BlockSize bsize, uint8_t situation, MvReferenceFrame rf0,
                                            MvReferenceFrame rf1, PredictionMode mode);
/* For intra prediction, the chroma transform type may not follow the luma type.
This function will return the intra chroma TX type to be used, which is based on TX size and chroma mode. */
TxType svt_aom_get_intra_uv_tx_type(UvPredictionMode pred_mode_uv, TxSize tx_size, int32_t reduced_tx_set);
void   svt_aom_set_tuned_blk_lambda(struct ModeDecisionContext* ctx, PictureControlSet* pcs);

typedef EbErrorType (*EB_INTRA_4x4_FAST_LUMA_COST_FUNC)(struct ModeDecisionContext* ctx, uint32_t pu_index,
                                                        ModeDecisionCandidateBuffer* cand_bf, uint64_t luma_distortion,
                                                        uint64_t lambda);

typedef EbErrorType (*EB_INTRA_4x4_FULL_LUMA_COST_FUNC)(ModeDecisionCandidateBuffer* cand_bf, uint64_t* y_distortion,
                                                        uint64_t lambda, uint64_t* y_coeff_bits,
                                                        uint32_t transform_size);

typedef EbErrorType (*EB_FULL_NXN_COST_FUNC)(PictureControlSet* pcs, ModeDecisionCandidateBuffer* cand_bf, uint32_t qp,
                                             uint64_t* y_distortion, uint64_t* cb_distortion, uint64_t* cr_distortion,
                                             uint64_t lambda, uint64_t lambda_chroma, uint64_t* y_coeff_bits,
                                             uint64_t* cb_coeff_bits, uint64_t* cr_coeff_bits, uint32_t transform_size);
struct CodingLoopContext_s;
/*
      |-------------------------------------------------------------|
      | ref_idx          0            1           2            3    |
      | List0            LAST        LAST2        LAST3        GOLD |
      | List1            BWD         ALT2         ALT               |
      |-------------------------------------------------------------|
    */
#define INVALID_REF 0xF
MvReferenceFrame svt_get_ref_frame_type(uint8_t list, uint8_t ref_idx);
int              svt_aom_get_sad_per_bit(int qidx, EbBitDepth is_hbd);

int  svt_av1_allow_palette(int allow_palette, BlockSize bsize);
bool svt_av1_is_lossless_segment(PictureControlSet* pcs, int8_t segment_id);
#ifdef __cplusplus
}
#endif
#endif // EbModeDecision_h
