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      1 /******************************************************************************
      2  *
      3  * Copyright (C) 2018 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at:
      8  *
      9  * http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  *
     17  *****************************************************************************
     18  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
     19 */
     20 /*!
     21 ******************************************************************************
     22 * \file ihevce_mv_pred_merge.h
     23 *
     24 * \brief
     25 *    This file contains function prototypes of MV Merge candidates list
     26 *    derivation functions and corresponding structure and macrso definations
     27 *
     28 * \date
     29 *    18/09/2012
     30 *
     31 * \author
     32 *    Ittiam
     33 *
     34 ******************************************************************************
     35 */
     36 
     37 #ifndef _IHEVCE_MV_PRED_MERGE_H_
     38 #define _IHEVCE_MV_PRED_MERGE_H_
     39 
     40 /*****************************************************************************/
     41 /* Constant Macros                                                           */
     42 /*****************************************************************************/
     43 #define MAX_NUM_MERGE_CAND MAX_MERGE_CANDIDATES
     44 #define MAX_NUM_MV_NBR 5
     45 
     46 /*****************************************************************************/
     47 /* Function Macros                                                           */
     48 /*****************************************************************************/
     49 
     50 /*****************************************************************************/
     51 /* Typedefs                                                                  */
     52 /*****************************************************************************/
     53 
     54 /*****************************************************************************/
     55 /* Enums                                                                     */
     56 /*****************************************************************************/
     57 typedef enum
     58 {
     59     NBR_A0 = 0,
     60     NBR_A1 = 1,
     61     NBR_B0 = 2,
     62     NBR_B1 = 3,
     63     NBR_B2 = 4,
     64 
     65     /* should be last */
     66     MAX_NUM_NBRS
     67 } MV_MERGE_NBRS_T;
     68 
     69 /*****************************************************************************/
     70 /* Structure                                                                 */
     71 /*****************************************************************************/
     72 
     73 typedef struct
     74 {
     75     /* Merge candidate motion vectors and refernce idx */
     76     pu_mv_t mv;
     77 
     78     /* Pred_l0 mode for the candidate */
     79     UWORD8 u1_pred_flag_l0;
     80 
     81     /* Pred_l1 mode for the candidate */
     82     UWORD8 u1_pred_flag_l1;
     83 
     84 } merge_cand_list_t;
     85 
     86 /*****************************************************************************/
     87 /* Extern Variable Declarations                                              */
     88 /*****************************************************************************/
     89 
     90 /*****************************************************************************/
     91 /* Extern Function Declarations                                              */
     92 /*****************************************************************************/
     93 
     94 void ihevce_collocated_mvp(
     95     mv_pred_ctxt_t *ps_mv_ctxt,
     96     pu_t *ps_pu,
     97     mv_t *ps_mv_col,
     98     WORD32 *pu4_avail_col_flag,
     99     WORD32 use_pu_ref_idx,
    100     WORD32 x_col,
    101     WORD32 y_col);
    102 
    103 WORD32 ihevce_mv_pred_merge(
    104     mv_pred_ctxt_t *ps_ctxt,
    105     nbr_4x4_t *ps_top_nbr_4x4,
    106     nbr_4x4_t *ps_left_nbr_4x4,
    107     nbr_4x4_t *ps_top_left_nbr_4x4,
    108     WORD32 left_nbr_4x4_strd,
    109     nbr_avail_flags_t *ps_avail_flags,
    110     pu_mv_t *ps_col_mv,
    111     pu_t *ps_pu,
    112     PART_SIZE_E part_mode,
    113     WORD32 part_idx,
    114     WORD32 single_mcl_flag,
    115     merge_cand_list_t *ps_merge_cand_list,
    116     UWORD8 *pu1_is_top_used);
    117 
    118 #endif /* _IHEVCE_MV_PRED_MERGE_H_ */
    119